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nest-open-source / manifest_repos / mali-driver / 268e43036ceb1097d004fa09786438f2319a2a0e / . / midgard / r13p0 / kernel / drivers / gpu / arm / midgard / mali_kbase_jd.c
blob: 3e0a5892cc7a46084aa4fa23e0d5e8d51cb907ae [file] [log] [blame]
/*
*
* (C) COPYRIGHT 2010-2016 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained
* from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#if defined(CONFIG_DMA_SHARED_BUFFER)
#include <linux/dma-buf.h>
#endif /* defined(CONFIG_DMA_SHARED_BUFFER) */
#ifdef CONFIG_COMPAT
#include <linux/compat.h>
#endif
#include <mali_kbase.h>
#include <mali_kbase_uku.h>
#include <linux/random.h>
#include <linux/version.h>
#include <linux/ratelimit.h>
#include <mali_kbase_jm.h>
#include <mali_kbase_hwaccess_jm.h>
#include <mali_kbase_tlstream.h>
#include "mali_kbase_dma_fence.h"
#define beenthere(kctx, f, a...) dev_dbg(kctx->kbdev->dev, "%s:" f, __func__, ##a)
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 8, 0)
/* random32 was renamed to prandom_u32 in 3.8 */
#define prandom_u32 random32
#endif
/* Return whether katom will run on the GPU or not. Currently only soft jobs and
* dependency-only atoms do not run on the GPU */
#define IS_GPU_ATOM(katom) (!((katom->core_req & BASE_JD_REQ_SOFT_JOB) || \
((katom->core_req & BASE_JD_REQ_ATOM_TYPE) == \
BASE_JD_REQ_DEP)))
/*
* This is the kernel side of the API. Only entry points are:
* - kbase_jd_submit(): Called from userspace to submit a single bag
* - kbase_jd_done(): Called from interrupt context to track the
* completion of a job.
* Callouts:
* - to the job manager (enqueue a job)
* - to the event subsystem (signals the completion/failure of bag/job-chains).
*/
static void __user *
get_compat_pointer(struct kbase_context *kctx, const union kbase_pointer *p)
{
#ifdef CONFIG_COMPAT
if (kctx->is_compat)
return compat_ptr(p->compat_value);
#endif
return p->value;
}
/* Runs an atom, either by handing to the JS or by immediately running it in the case of soft-jobs
*
* Returns whether the JS needs a reschedule.
*
* Note that the caller must also check the atom status and
* if it is KBASE_JD_ATOM_STATE_COMPLETED must call jd_done_nolock
*/
static int jd_run_atom(struct kbase_jd_atom *katom)
{
struct kbase_context *kctx = katom->kctx;
KBASE_DEBUG_ASSERT(katom->status != KBASE_JD_ATOM_STATE_UNUSED);
if ((katom->core_req & BASE_JD_REQ_ATOM_TYPE) == BASE_JD_REQ_DEP) {
/* Dependency only atom */
katom->status = KBASE_JD_ATOM_STATE_COMPLETED;
return 0;
} else if (katom->core_req & BASE_JD_REQ_SOFT_JOB) {
/* Soft-job */
if (katom->will_fail_event_code) {
katom->status = KBASE_JD_ATOM_STATE_COMPLETED;
return 0;
}
if ((katom->core_req & BASE_JD_REQ_SOFT_JOB_TYPE)
== BASE_JD_REQ_SOFT_REPLAY) {
if (!kbase_replay_process(katom))
katom->status = KBASE_JD_ATOM_STATE_COMPLETED;
} else if (kbase_process_soft_job(katom) == 0) {
kbase_finish_soft_job(katom);
katom->status = KBASE_JD_ATOM_STATE_COMPLETED;
}
return 0;
}
katom->status = KBASE_JD_ATOM_STATE_IN_JS;
/* Queue an action about whether we should try scheduling a context */
return kbasep_js_add_job(kctx, katom);
}
#if defined(CONFIG_KDS) || defined(CONFIG_MALI_DMA_FENCE)
void kbase_jd_dep_clear_locked(struct kbase_jd_atom *katom)
{
struct kbase_device *kbdev;
KBASE_DEBUG_ASSERT(katom);
kbdev = katom->kctx->kbdev;
KBASE_DEBUG_ASSERT(kbdev);
/* Check whether the atom's other dependencies were already met. If
* katom is a GPU atom then the job scheduler may be able to represent
* the dependencies, hence we may attempt to submit it before they are
* met. Other atoms must have had both dependencies resolved.
*/
if (IS_GPU_ATOM(katom) ||
(!kbase_jd_katom_dep_atom(&katom->dep[0]) &&
!kbase_jd_katom_dep_atom(&katom->dep[1]))) {
/* katom dep complete, attempt to run it */
bool resched = false;
resched = jd_run_atom(katom);
if (katom->status == KBASE_JD_ATOM_STATE_COMPLETED) {
/* The atom has already finished */
resched |= jd_done_nolock(katom, NULL);
}
if (resched)
kbase_js_sched_all(kbdev);
}
}
#endif
#ifdef CONFIG_KDS
/* Add the katom to the kds waiting list.
* Atoms must be added to the waiting list after a successful call to kds_async_waitall.
* The caller must hold the kbase_jd_context.lock */
static void kbase_jd_kds_waiters_add(struct kbase_jd_atom *katom)
{
struct kbase_context *kctx;
KBASE_DEBUG_ASSERT(katom);
kctx = katom->kctx;
list_add_tail(&katom->node, &kctx->waiting_kds_resource);
}
/* Remove the katom from the kds waiting list.
* Atoms must be removed from the waiting list before a call to kds_resource_set_release_sync.
* The supplied katom must first have been added to the list with a call to kbase_jd_kds_waiters_add.
* The caller must hold the kbase_jd_context.lock */
static void kbase_jd_kds_waiters_remove(struct kbase_jd_atom *katom)
{
KBASE_DEBUG_ASSERT(katom);
list_del(&katom->node);
}
static void kds_dep_clear(void *callback_parameter, void *callback_extra_parameter)
{
struct kbase_jd_atom *katom;
struct kbase_jd_context *ctx;
katom = (struct kbase_jd_atom *)callback_parameter;
KBASE_DEBUG_ASSERT(katom);
ctx = &katom->kctx->jctx;
/* If KDS resource has already been satisfied (e.g. due to zapping)
* do nothing.
*/
mutex_lock(&ctx->lock);
if (!katom->kds_dep_satisfied) {
katom->kds_dep_satisfied = true;
kbase_jd_dep_clear_locked(katom);
}
mutex_unlock(&ctx->lock);
}
static void kbase_cancel_kds_wait_job(struct kbase_jd_atom *katom)
{
KBASE_DEBUG_ASSERT(katom);
/* Prevent job_done_nolock from being called twice on an atom when
* there is a race between job completion and cancellation */
if (katom->status == KBASE_JD_ATOM_STATE_QUEUED) {
/* Wait was cancelled - zap the atom */
katom->event_code = BASE_JD_EVENT_JOB_CANCELLED;
if (jd_done_nolock(katom, NULL))
kbase_js_sched_all(katom->kctx->kbdev);
}
}
#endif /* CONFIG_KDS */
void kbase_jd_free_external_resources(struct kbase_jd_atom *katom)
{
#ifdef CONFIG_KDS
if (katom->kds_rset) {
struct kbase_jd_context *jctx = &katom->kctx->jctx;
/*
* As the atom is no longer waiting, remove it from
* the waiting list.
*/
mutex_lock(&jctx->lock);
kbase_jd_kds_waiters_remove(katom);
mutex_unlock(&jctx->lock);
/* Release the kds resource or cancel if zapping */
kds_resource_set_release_sync(&katom->kds_rset);
}
#endif /* CONFIG_KDS */
#ifdef CONFIG_MALI_DMA_FENCE
/* Flush dma-fence workqueue to ensure that any callbacks that may have
* been queued are done before continuing.
* Any successfully completed atom would have had all it's callbacks
* completed before the atom was run, so only flush for failed atoms.
*/
if (katom->event_code != BASE_JD_EVENT_DONE)
flush_workqueue(katom->kctx->dma_fence.wq);
#endif /* CONFIG_MALI_DMA_FENCE */
}
static void kbase_jd_post_external_resources(struct kbase_jd_atom *katom)
{
KBASE_DEBUG_ASSERT(katom);
KBASE_DEBUG_ASSERT(katom->core_req & BASE_JD_REQ_EXTERNAL_RESOURCES);
#ifdef CONFIG_KDS
/* Prevent the KDS resource from triggering the atom in case of zapping */
if (katom->kds_rset)
katom->kds_dep_satisfied = true;
#endif /* CONFIG_KDS */
#ifdef CONFIG_MALI_DMA_FENCE
kbase_dma_fence_signal(katom);
#endif /* CONFIG_MALI_DMA_FENCE */
kbase_gpu_vm_lock(katom->kctx);
/* only roll back if extres is non-NULL */
if (katom->extres) {
u32 res_no;
res_no = katom->nr_extres;
while (res_no-- > 0) {
struct kbase_mem_phy_alloc *alloc = katom->extres[res_no].alloc;
struct kbase_va_region *reg;
reg = kbase_region_tracker_find_region_base_address(
katom->kctx,
katom->extres[res_no].gpu_address);
kbase_unmap_external_resource(katom->kctx, reg, alloc);
}
kfree(katom->extres);
katom->extres = NULL;
}
kbase_gpu_vm_unlock(katom->kctx);
}
/*
* Set up external resources needed by this job.
*
* jctx.lock must be held when this is called.
*/
static int kbase_jd_pre_external_resources(struct kbase_jd_atom *katom, const struct base_jd_atom_v2 *user_atom)
{
int err_ret_val = -EINVAL;
u32 res_no;
#ifdef CONFIG_KDS
u32 kds_res_count = 0;
struct kds_resource **kds_resources = NULL;
unsigned long *kds_access_bitmap = NULL;
#endif /* CONFIG_KDS */
#ifdef CONFIG_MALI_DMA_FENCE
struct kbase_dma_fence_resv_info info = {
.dma_fence_resv_count = 0,
};
#endif
struct base_external_resource *input_extres;
KBASE_DEBUG_ASSERT(katom);
KBASE_DEBUG_ASSERT(katom->core_req & BASE_JD_REQ_EXTERNAL_RESOURCES);
/* no resources encoded, early out */
if (!katom->nr_extres)
return -EINVAL;
katom->extres = kmalloc_array(katom->nr_extres, sizeof(*katom->extres), GFP_KERNEL);
if (NULL == katom->extres) {
err_ret_val = -ENOMEM;
goto early_err_out;
}
/* copy user buffer to the end of our real buffer.
* Make sure the struct sizes haven't changed in a way
* we don't support */
BUILD_BUG_ON(sizeof(*input_extres) > sizeof(*katom->extres));
input_extres = (struct base_external_resource *)
(((unsigned char *)katom->extres) +
(sizeof(*katom->extres) - sizeof(*input_extres)) *
katom->nr_extres);
if (copy_from_user(input_extres,
get_compat_pointer(katom->kctx, &user_atom->extres_list),
sizeof(*input_extres) * katom->nr_extres) != 0) {
err_ret_val = -EINVAL;
goto early_err_out;
}
#ifdef CONFIG_KDS
/* assume we have to wait for all */
KBASE_DEBUG_ASSERT(0 != katom->nr_extres);
kds_resources = kmalloc_array(katom->nr_extres, sizeof(struct kds_resource *), GFP_KERNEL);
if (!kds_resources) {
err_ret_val = -ENOMEM;
goto early_err_out;
}
KBASE_DEBUG_ASSERT(0 != katom->nr_extres);
kds_access_bitmap = kcalloc(BITS_TO_LONGS(katom->nr_extres),
sizeof(unsigned long),
GFP_KERNEL);
if (!kds_access_bitmap) {
err_ret_val = -ENOMEM;
goto early_err_out;
}
#endif /* CONFIG_KDS */
#ifdef CONFIG_MALI_DMA_FENCE
info.resv_objs = kmalloc_array(katom->nr_extres,
sizeof(struct reservation_object *),
GFP_KERNEL);
if (!info.resv_objs) {
err_ret_val = -ENOMEM;
goto early_err_out;
}
info.dma_fence_excl_bitmap = kcalloc(BITS_TO_LONGS(katom->nr_extres),
sizeof(unsigned long),
GFP_KERNEL);
if (!info.dma_fence_excl_bitmap) {
err_ret_val = -ENOMEM;
goto early_err_out;
}
#endif /* CONFIG_MALI_DMA_FENCE */
/* Take the processes mmap lock */
down_read(&current->mm->mmap_sem);
/* need to keep the GPU VM locked while we set up UMM buffers */
kbase_gpu_vm_lock(katom->kctx);
for (res_no = 0; res_no < katom->nr_extres; res_no++) {
struct base_external_resource *res;
struct kbase_va_region *reg;
struct kbase_mem_phy_alloc *alloc;
bool exclusive;
res = &input_extres[res_no];
exclusive = (res->ext_resource & BASE_EXT_RES_ACCESS_EXCLUSIVE)
? true : false;
reg = kbase_region_tracker_find_region_enclosing_address(
katom->kctx,
res->ext_resource & ~BASE_EXT_RES_ACCESS_EXCLUSIVE);
/* did we find a matching region object? */
if (NULL == reg || (reg->flags & KBASE_REG_FREE)) {
/* roll back */
goto failed_loop;
}
if (!(katom->core_req & BASE_JD_REQ_SOFT_JOB) &&
(reg->flags & KBASE_REG_SECURE)) {
katom->atom_flags |= KBASE_KATOM_FLAG_PROTECTED;
}
alloc = kbase_map_external_resource(katom->kctx, reg,
current->mm
#ifdef CONFIG_KDS
, &kds_res_count, kds_resources,
kds_access_bitmap, exclusive
#endif
);
if (!alloc) {
err_ret_val = -EINVAL;
goto failed_loop;
}
#ifdef CONFIG_MALI_DMA_FENCE
if (reg->gpu_alloc->type == KBASE_MEM_TYPE_IMPORTED_UMM) {
struct reservation_object *resv;
resv = reg->gpu_alloc->imported.umm.dma_buf->resv;
if (resv)
kbase_dma_fence_add_reservation(resv, &info,
exclusive);
}
#endif /* CONFIG_MALI_DMA_FENCE */
/* finish with updating out array with the data we found */
/* NOTE: It is important that this is the last thing we do (or
* at least not before the first write) as we overwrite elements
* as we loop and could be overwriting ourself, so no writes
* until the last read for an element.
* */
katom->extres[res_no].gpu_address = reg->start_pfn << PAGE_SHIFT; /* save the start_pfn (as an address, not pfn) to use fast lookup later */
katom->extres[res_no].alloc = alloc;
}
/* successfully parsed the extres array */
/* drop the vm lock before we call into kds */
kbase_gpu_vm_unlock(katom->kctx);
/* Release the processes mmap lock */
up_read(&current->mm->mmap_sem);
#ifdef CONFIG_KDS
if (kds_res_count) {
int wait_failed;
/* We have resources to wait for with kds */
katom->kds_dep_satisfied = false;
wait_failed = kds_async_waitall(&katom->kds_rset,
&katom->kctx->jctx.kds_cb, katom, NULL,
kds_res_count, kds_access_bitmap,
kds_resources);
if (wait_failed)
goto failed_kds_setup;
else
kbase_jd_kds_waiters_add(katom);
} else {
/* Nothing to wait for, so kds dep met */
katom->kds_dep_satisfied = true;
}
kfree(kds_resources);
kfree(kds_access_bitmap);
#endif /* CONFIG_KDS */
#ifdef CONFIG_MALI_DMA_FENCE
if (info.dma_fence_resv_count) {
int ret;
ret = kbase_dma_fence_wait(katom, &info);
if (ret < 0)
goto failed_dma_fence_setup;
}
kfree(info.resv_objs);
kfree(info.dma_fence_excl_bitmap);
#endif /* CONFIG_MALI_DMA_FENCE */
/* all done OK */
return 0;
/* error handling section */
#ifdef CONFIG_MALI_DMA_FENCE
failed_dma_fence_setup:
#ifdef CONFIG_KDS
/* If we are here, dma_fence setup failed but KDS didn't.
* Revert KDS setup if any.
*/
if (kds_res_count) {
mutex_unlock(&katom->kctx->jctx.lock);
kds_resource_set_release_sync(&katom->kds_rset);
mutex_lock(&katom->kctx->jctx.lock);
kbase_jd_kds_waiters_remove(katom);
katom->kds_dep_satisfied = true;
}
#endif /* CONFIG_KDS */
#endif /* CONFIG_MALI_DMA_FENCE */
#ifdef CONFIG_KDS
failed_kds_setup:
#endif
#if defined(CONFIG_KDS) || defined(CONFIG_MALI_DMA_FENCE)
/* Lock the processes mmap lock */
down_read(&current->mm->mmap_sem);
/* lock before we unmap */
kbase_gpu_vm_lock(katom->kctx);
#endif
failed_loop:
/* undo the loop work */
while (res_no-- > 0) {
struct kbase_mem_phy_alloc *alloc = katom->extres[res_no].alloc;
kbase_unmap_external_resource(katom->kctx, NULL, alloc);
}
kbase_gpu_vm_unlock(katom->kctx);
/* Release the processes mmap lock */
up_read(&current->mm->mmap_sem);
early_err_out:
kfree(katom->extres);
katom->extres = NULL;
#ifdef CONFIG_KDS
kfree(kds_resources);
kfree(kds_access_bitmap);
#endif /* CONFIG_KDS */
#ifdef CONFIG_MALI_DMA_FENCE
kfree(info.resv_objs);
kfree(info.dma_fence_excl_bitmap);
#endif
return err_ret_val;
}
static inline void jd_resolve_dep(struct list_head *out_list,
struct kbase_jd_atom *katom,
u8 d, bool ctx_is_dying)
{
u8 other_d = !d;
while (!list_empty(&katom->dep_head[d])) {
struct kbase_jd_atom *dep_atom;
struct kbase_jd_atom *other_dep_atom;
u8 dep_type;
dep_atom = list_entry(katom->dep_head[d].next,
struct kbase_jd_atom, dep_item[d]);
list_del(katom->dep_head[d].next);
dep_type = kbase_jd_katom_dep_type(&dep_atom->dep[d]);
kbase_jd_katom_dep_clear(&dep_atom->dep[d]);
if (katom->event_code != BASE_JD_EVENT_DONE &&
(dep_type != BASE_JD_DEP_TYPE_ORDER)) {
#ifdef CONFIG_KDS
if (!dep_atom->kds_dep_satisfied) {
/* Just set kds_dep_satisfied to true. If the callback happens after this then it will early out and
* do nothing. If the callback doesn't happen then kbase_jd_post_external_resources will clean up
*/
dep_atom->kds_dep_satisfied = true;
}
#endif
#ifdef CONFIG_MALI_DMA_FENCE
kbase_dma_fence_cancel_callbacks(dep_atom);
#endif
dep_atom->event_code = katom->event_code;
KBASE_DEBUG_ASSERT(dep_atom->status !=
KBASE_JD_ATOM_STATE_UNUSED);
if ((dep_atom->core_req & BASE_JD_REQ_SOFT_REPLAY)
!= BASE_JD_REQ_SOFT_REPLAY) {
dep_atom->will_fail_event_code =
dep_atom->event_code;
} else {
dep_atom->status =
KBASE_JD_ATOM_STATE_COMPLETED;
}
}
other_dep_atom = (struct kbase_jd_atom *)
kbase_jd_katom_dep_atom(&dep_atom->dep[other_d]);
if (!dep_atom->in_jd_list && (!other_dep_atom ||
(IS_GPU_ATOM(dep_atom) && !ctx_is_dying &&
!dep_atom->will_fail_event_code &&
!other_dep_atom->will_fail_event_code))) {
bool dep_satisfied = true;
#ifdef CONFIG_MALI_DMA_FENCE
int dep_count;
dep_count = atomic_read(&dep_atom->dma_fence.dep_count);
if (likely(dep_count == -1)) {
dep_satisfied = true;
} else if (dep_count == 0) {
/*
* All fences for this atom has signaled, but
* the worker that will queue the atom has not
* yet run.
*
* Mark the atom as handled by setting
* dep_count to -1 so that the worker doesn't
* queue the atom again.
*/
atomic_set(&dep_atom->dma_fence.dep_count, -1);
/*
* Remove the atom from the list of dma-fence
* waiting atoms.
*/
kbase_dma_fence_waiters_remove(dep_atom);
dep_satisfied = true;
} else {
dep_satisfied = false;
}
#endif /* CONFIG_MALI_DMA_FENCE */
#ifdef CONFIG_KDS
dep_satisfied = dep_satisfied && dep_atom->kds_dep_satisfied;
#endif
if (dep_satisfied) {
dep_atom->in_jd_list = true;
list_add_tail(&dep_atom->jd_item, out_list);
}
}
}
}
KBASE_EXPORT_TEST_API(jd_resolve_dep);
#if MALI_CUSTOMER_RELEASE == 0
static void jd_force_failure(struct kbase_device *kbdev, struct kbase_jd_atom *katom)
{
kbdev->force_replay_count++;
if (kbdev->force_replay_count >= kbdev->force_replay_limit) {
kbdev->force_replay_count = 0;
katom->event_code = BASE_JD_EVENT_FORCE_REPLAY;
if (kbdev->force_replay_random)
kbdev->force_replay_limit =
(prandom_u32() % KBASEP_FORCE_REPLAY_RANDOM_LIMIT) + 1;
dev_info(kbdev->dev, "force_replay : promoting to error\n");
}
}
/** Test to see if atom should be forced to fail.
*
* This function will check if an atom has a replay job as a dependent. If so
* then it will be considered for forced failure. */
static void jd_check_force_failure(struct kbase_jd_atom *katom)
{
struct kbase_context *kctx = katom->kctx;
struct kbase_device *kbdev = kctx->kbdev;
int i;
if ((kbdev->force_replay_limit == KBASEP_FORCE_REPLAY_DISABLED) ||
(katom->core_req & BASEP_JD_REQ_EVENT_NEVER))
return;
for (i = 1; i < BASE_JD_ATOM_COUNT; i++) {
if (kbase_jd_katom_dep_atom(&kctx->jctx.atoms[i].dep[0]) == katom ||
kbase_jd_katom_dep_atom(&kctx->jctx.atoms[i].dep[1]) == katom) {
struct kbase_jd_atom *dep_atom = &kctx->jctx.atoms[i];
if ((dep_atom->core_req & BASE_JD_REQ_SOFT_JOB_TYPE) ==
BASE_JD_REQ_SOFT_REPLAY &&
(dep_atom->core_req & kbdev->force_replay_core_req)
== kbdev->force_replay_core_req) {
jd_force_failure(kbdev, katom);
return;
}
}
}
}
#endif
static void jd_try_submitting_deps(struct list_head *out_list,
struct kbase_jd_atom *node)
{
int i;
for (i = 0; i < 2; i++) {
struct list_head *pos;
list_for_each(pos, &node->dep_head[i]) {
struct kbase_jd_atom *dep_atom = list_entry(pos,
struct kbase_jd_atom, dep_item[i]);
if (IS_GPU_ATOM(dep_atom) && !dep_atom->in_jd_list) {
/*Check if atom deps look sane*/
bool dep0_valid = !dep_atom->dep[0].atom ||
(dep_atom->dep[0].atom->status
>= KBASE_JD_ATOM_STATE_IN_JS);
bool dep1_valid = !dep_atom->dep[1].atom ||
(dep_atom->dep[1].atom->status
>= KBASE_JD_ATOM_STATE_IN_JS);
if (dep0_valid && dep1_valid) {
dep_atom->in_jd_list = true;
list_add(&dep_atom->jd_item, out_list);
}
}
}
}
}
/*
* Perform the necessary handling of an atom that has finished running
* on the GPU.
*
* Note that if this is a soft-job that has had kbase_prepare_soft_job called on it then the caller
* is responsible for calling kbase_finish_soft_job *before* calling this function.
*
* The caller must hold the kbase_jd_context.lock.
*/
bool jd_done_nolock(struct kbase_jd_atom *katom,
struct list_head *completed_jobs_ctx)
{
struct kbase_context *kctx = katom->kctx;
struct kbase_device *kbdev = kctx->kbdev;
struct list_head completed_jobs;
struct list_head runnable_jobs;
bool need_to_try_schedule_context = false;
int i;
INIT_LIST_HEAD(&completed_jobs);
INIT_LIST_HEAD(&runnable_jobs);
KBASE_DEBUG_ASSERT(katom->status != KBASE_JD_ATOM_STATE_UNUSED);
#if MALI_CUSTOMER_RELEASE == 0
jd_check_force_failure(katom);
#endif
/* This is needed in case an atom is failed due to being invalid, this
* can happen *before* the jobs that the atom depends on have completed */
for (i = 0; i < 2; i++) {
if (kbase_jd_katom_dep_atom(&katom->dep[i])) {
list_del(&katom->dep_item[i]);
kbase_jd_katom_dep_clear(&katom->dep[i]);
}
}
/* With PRLAM-10817 or PRLAM-10959 the last tile of a fragment job being soft-stopped can fail with
* BASE_JD_EVENT_TILE_RANGE_FAULT.
*
* So here if the fragment job failed with TILE_RANGE_FAULT and it has been soft-stopped, then we promote the
* error code to BASE_JD_EVENT_DONE
*/
if ((kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_10817) || kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_10959)) &&
katom->event_code == BASE_JD_EVENT_TILE_RANGE_FAULT) {
if ((katom->core_req & BASE_JD_REQ_FS) && (katom->atom_flags & KBASE_KATOM_FLAG_BEEN_SOFT_STOPPPED)) {
/* Promote the failure to job done */
katom->event_code = BASE_JD_EVENT_DONE;
katom->atom_flags = katom->atom_flags & (~KBASE_KATOM_FLAG_BEEN_SOFT_STOPPPED);
}
}
katom->status = KBASE_JD_ATOM_STATE_COMPLETED;
list_add_tail(&katom->jd_item, &completed_jobs);
while (!list_empty(&completed_jobs)) {
katom = list_entry(completed_jobs.prev, struct kbase_jd_atom, jd_item);
list_del(completed_jobs.prev);
KBASE_DEBUG_ASSERT(katom->status == KBASE_JD_ATOM_STATE_COMPLETED);
for (i = 0; i < 2; i++)
jd_resolve_dep(&runnable_jobs, katom, i,
kctx->jctx.sched_info.ctx.is_dying);
if (katom->core_req & BASE_JD_REQ_EXTERNAL_RESOURCES)
kbase_jd_post_external_resources(katom);
while (!list_empty(&runnable_jobs)) {
struct kbase_jd_atom *node;
node = list_entry(runnable_jobs.next,
struct kbase_jd_atom, jd_item);
list_del(runnable_jobs.next);
node->in_jd_list = false;
KBASE_DEBUG_ASSERT(node->status != KBASE_JD_ATOM_STATE_UNUSED);
if (node->status != KBASE_JD_ATOM_STATE_COMPLETED &&
!kctx->jctx.sched_info.ctx.is_dying) {
need_to_try_schedule_context |= jd_run_atom(node);
} else {
node->event_code = katom->event_code;
if ((node->core_req &
BASE_JD_REQ_SOFT_JOB_TYPE) ==
BASE_JD_REQ_SOFT_REPLAY) {
if (kbase_replay_process(node))
/* Don't complete this atom */
continue;
} else if (node->core_req &
BASE_JD_REQ_SOFT_JOB) {
/* If this is a fence wait soft job
* then remove it from the list of sync
* waiters.
*/
if (BASE_JD_REQ_SOFT_FENCE_WAIT == node->core_req)
kbasep_remove_waiting_soft_job(node);
kbase_finish_soft_job(node);
}
node->status = KBASE_JD_ATOM_STATE_COMPLETED;
}
if (node->status == KBASE_JD_ATOM_STATE_COMPLETED) {
list_add_tail(&node->jd_item, &completed_jobs);
} else if (node->status == KBASE_JD_ATOM_STATE_IN_JS &&
!node->will_fail_event_code) {
/* Node successfully submitted, try submitting
* dependencies as they may now be representable
* in JS */
jd_try_submitting_deps(&runnable_jobs, node);
}
}
/* Register a completed job as a disjoint event when the GPU
* is in a disjoint state (ie. being reset or replaying jobs).
*/
kbase_disjoint_event_potential(kctx->kbdev);
if (completed_jobs_ctx)
list_add_tail(&katom->jd_item, completed_jobs_ctx);
else
kbase_event_post(kctx, katom);
/* Decrement and check the TOTAL number of jobs. This includes
* those not tracked by the scheduler: 'not ready to run' and
* 'dependency-only' jobs. */
if (--kctx->jctx.job_nr == 0)
wake_up(&kctx->jctx.zero_jobs_wait); /* All events are safely queued now, and we can signal any waiter
* that we've got no more jobs (so we can be safely terminated) */
}
return need_to_try_schedule_context;
}
KBASE_EXPORT_TEST_API(jd_done_nolock);
#ifdef CONFIG_GPU_TRACEPOINTS
enum {
CORE_REQ_DEP_ONLY,
CORE_REQ_SOFT,
CORE_REQ_COMPUTE,
CORE_REQ_FRAGMENT,
CORE_REQ_VERTEX,
CORE_REQ_TILER,
CORE_REQ_FRAGMENT_VERTEX,
CORE_REQ_FRAGMENT_VERTEX_TILER,
CORE_REQ_FRAGMENT_TILER,
CORE_REQ_VERTEX_TILER,
CORE_REQ_UNKNOWN
};
static const char * const core_req_strings[] = {
"Dependency Only Job",
"Soft Job",
"Compute Shader Job",
"Fragment Shader Job",
"Vertex/Geometry Shader Job",
"Tiler Job",
"Fragment Shader + Vertex/Geometry Shader Job",
"Fragment Shader + Vertex/Geometry Shader Job + Tiler Job",
"Fragment Shader + Tiler Job",
"Vertex/Geometry Shader Job + Tiler Job",
"Unknown Job"
};
static const char *kbasep_map_core_reqs_to_string(base_jd_core_req core_req)
{
if (core_req & BASE_JD_REQ_SOFT_JOB)
return core_req_strings[CORE_REQ_SOFT];
if (core_req & BASE_JD_REQ_ONLY_COMPUTE)
return core_req_strings[CORE_REQ_COMPUTE];
switch (core_req & (BASE_JD_REQ_FS | BASE_JD_REQ_CS | BASE_JD_REQ_T)) {
case BASE_JD_REQ_DEP:
return core_req_strings[CORE_REQ_DEP_ONLY];
case BASE_JD_REQ_FS:
return core_req_strings[CORE_REQ_FRAGMENT];
case BASE_JD_REQ_CS:
return core_req_strings[CORE_REQ_VERTEX];
case BASE_JD_REQ_T:
return core_req_strings[CORE_REQ_TILER];
case (BASE_JD_REQ_FS | BASE_JD_REQ_CS):
return core_req_strings[CORE_REQ_FRAGMENT_VERTEX];
case (BASE_JD_REQ_FS | BASE_JD_REQ_T):
return core_req_strings[CORE_REQ_FRAGMENT_TILER];
case (BASE_JD_REQ_CS | BASE_JD_REQ_T):
return core_req_strings[CORE_REQ_VERTEX_TILER];
case (BASE_JD_REQ_FS | BASE_JD_REQ_CS | BASE_JD_REQ_T):
return core_req_strings[CORE_REQ_FRAGMENT_VERTEX_TILER];
}
return core_req_strings[CORE_REQ_UNKNOWN];
}
#endif
bool jd_submit_atom(struct kbase_context *kctx, const struct base_jd_atom_v2 *user_atom, struct kbase_jd_atom *katom)
{
struct kbase_jd_context *jctx = &kctx->jctx;
int queued = 0;
int i;
int sched_prio;
bool ret;
bool will_fail = false;
/* Update the TOTAL number of jobs. This includes those not tracked by
* the scheduler: 'not ready to run' and 'dependency-only' jobs. */
jctx->job_nr++;
katom->start_timestamp.tv64 = 0;
katom->time_spent_us = 0;
katom->udata = user_atom->udata;
katom->kctx = kctx;
katom->nr_extres = user_atom->nr_extres;
katom->extres = NULL;
katom->device_nr = user_atom->device_nr;
katom->affinity = 0;
katom->jc = user_atom->jc;
katom->coreref_state = KBASE_ATOM_COREREF_STATE_NO_CORES_REQUESTED;
katom->core_req = user_atom->core_req;
katom->atom_flags = 0;
katom->retry_count = 0;
katom->need_cache_flush_cores_retained = 0;
katom->pre_dep = NULL;
katom->post_dep = NULL;
katom->x_pre_dep = NULL;
katom->x_post_dep = NULL;
katom->will_fail_event_code = BASE_JD_EVENT_NOT_STARTED;
katom->exit_protected_state = KBASE_ATOM_EXIT_PROTECTED_CHECK;
katom->age = kctx->age_count++;
INIT_LIST_HEAD(&katom->jd_item);
#ifdef CONFIG_KDS
/* Start by assuming that the KDS dependencies are satisfied,
* kbase_jd_pre_external_resources will correct this if there are dependencies */
katom->kds_dep_satisfied = true;
katom->kds_rset = NULL;
#endif /* CONFIG_KDS */
#ifdef CONFIG_MALI_DMA_FENCE
atomic_set(&katom->dma_fence.dep_count, -1);
#endif
/* Don't do anything if there is a mess up with dependencies.
This is done in a separate cycle to check both the dependencies at ones, otherwise
it will be extra complexity to deal with 1st dependency ( just added to the list )
if only the 2nd one has invalid config.
*/
for (i = 0; i < 2; i++) {
int dep_atom_number = user_atom->pre_dep[i].atom_id;
base_jd_dep_type dep_atom_type = user_atom->pre_dep[i].dependency_type;
if (dep_atom_number) {
if (dep_atom_type != BASE_JD_DEP_TYPE_ORDER &&
dep_atom_type != BASE_JD_DEP_TYPE_DATA) {
katom->event_code = BASE_JD_EVENT_JOB_CONFIG_FAULT;
katom->status = KBASE_JD_ATOM_STATE_COMPLETED;
/* Wrong dependency setup. Atom will be sent
* back to user space. Do not record any
* dependencies. */
kbase_tlstream_tl_new_atom(
katom,
kbase_jd_atom_id(kctx, katom));
kbase_tlstream_tl_ret_atom_ctx(
katom, kctx);
ret = jd_done_nolock(katom, NULL);
goto out;
}
}
}
/* Add dependencies */
for (i = 0; i < 2; i++) {
int dep_atom_number = user_atom->pre_dep[i].atom_id;
base_jd_dep_type dep_atom_type;
struct kbase_jd_atom *dep_atom = &jctx->atoms[dep_atom_number];
dep_atom_type = user_atom->pre_dep[i].dependency_type;
kbase_jd_katom_dep_clear(&katom->dep[i]);
if (!dep_atom_number)
continue;
if (dep_atom->status == KBASE_JD_ATOM_STATE_UNUSED ||
dep_atom->status == KBASE_JD_ATOM_STATE_COMPLETED) {
if (dep_atom->event_code == BASE_JD_EVENT_DONE)
continue;
/* don't stop this atom if it has an order dependency
* only to the failed one, try to submit it through
* the normal path
*/
if (dep_atom_type == BASE_JD_DEP_TYPE_ORDER &&
dep_atom->event_code > BASE_JD_EVENT_ACTIVE) {
continue;
}
/* Atom has completed, propagate the error code if any */
katom->event_code = dep_atom->event_code;
katom->status = KBASE_JD_ATOM_STATE_QUEUED;
/* This atom is going through soft replay or
* will be sent back to user space. Do not record any
* dependencies. */
kbase_tlstream_tl_new_atom(
katom,
kbase_jd_atom_id(kctx, katom));
kbase_tlstream_tl_ret_atom_ctx(katom, kctx);
if ((katom->core_req & BASE_JD_REQ_SOFT_JOB_TYPE)
== BASE_JD_REQ_SOFT_REPLAY) {
if (kbase_replay_process(katom)) {
ret = false;
goto out;
}
}
will_fail = true;
} else {
/* Atom is in progress, add this atom to the list */
list_add_tail(&katom->dep_item[i], &dep_atom->dep_head[i]);
kbase_jd_katom_dep_set(&katom->dep[i], dep_atom, dep_atom_type);
queued = 1;
}
}
if (will_fail) {
if (!queued) {
ret = jd_done_nolock(katom, NULL);
goto out;
} else {
katom->will_fail_event_code = katom->event_code;
ret = false;
goto out;
}
} else {
/* These must occur after the above loop to ensure that an atom
* that depends on a previous atom with the same number behaves
* as expected */
katom->event_code = BASE_JD_EVENT_DONE;
katom->status = KBASE_JD_ATOM_STATE_QUEUED;
}
/* Create a new atom recording all dependencies it was set up with. */
kbase_tlstream_tl_new_atom(
katom,
kbase_jd_atom_id(kctx, katom));
kbase_tlstream_tl_ret_atom_ctx(katom, kctx);
for (i = 0; i < 2; i++)
if (BASE_JD_DEP_TYPE_INVALID != kbase_jd_katom_dep_type(
&katom->dep[i])) {
kbase_tlstream_tl_dep_atom_atom(
(void *)kbase_jd_katom_dep_atom(
&katom->dep[i]),
(void *)katom);
} else if (BASE_JD_DEP_TYPE_INVALID !=
user_atom->pre_dep[i].dependency_type) {
/* Resolved dependency. */
int dep_atom_number =
user_atom->pre_dep[i].atom_id;
struct kbase_jd_atom *dep_atom =
&jctx->atoms[dep_atom_number];
kbase_tlstream_tl_rdep_atom_atom(
(void *)dep_atom,
(void *)katom);
}
/* Reject atoms with job chain = NULL, as these cause issues with soft-stop */
if (!katom->jc && (katom->core_req & BASE_JD_REQ_ATOM_TYPE) != BASE_JD_REQ_DEP) {
dev_warn(kctx->kbdev->dev, "Rejecting atom with jc = NULL");
katom->event_code = BASE_JD_EVENT_JOB_INVALID;
ret = jd_done_nolock(katom, NULL);
goto out;
}
/* Reject atoms with an invalid device_nr */
if ((katom->core_req & BASE_JD_REQ_SPECIFIC_COHERENT_GROUP) &&
(katom->device_nr >= kctx->kbdev->gpu_props.num_core_groups)) {
dev_warn(kctx->kbdev->dev,
"Rejecting atom with invalid device_nr %d",
katom->device_nr);
katom->event_code = BASE_JD_EVENT_JOB_INVALID;
ret = jd_done_nolock(katom, NULL);
goto out;
}
/* Reject atoms with invalid core requirements */
if ((katom->core_req & BASE_JD_REQ_EXTERNAL_RESOURCES) &&
(katom->core_req & BASE_JD_REQ_EVENT_COALESCE)) {
dev_warn(kctx->kbdev->dev,
"Rejecting atom with invalid core requirements");
katom->event_code = BASE_JD_EVENT_JOB_INVALID;
katom->core_req &= ~BASE_JD_REQ_EVENT_COALESCE;
ret = jd_done_nolock(katom, NULL);
goto out;
}
/* For invalid priority, be most lenient and choose the default */
sched_prio = kbasep_js_atom_prio_to_sched_prio(user_atom->prio);
if (sched_prio == KBASE_JS_ATOM_SCHED_PRIO_INVALID)
sched_prio = KBASE_JS_ATOM_SCHED_PRIO_DEFAULT;
katom->sched_priority = sched_prio;
if (katom->core_req & BASE_JD_REQ_EXTERNAL_RESOURCES) {
/* handle what we need to do to access the external resources */
if (kbase_jd_pre_external_resources(katom, user_atom) != 0) {
/* setup failed (no access, bad resource, unknown resource types, etc.) */
katom->event_code = BASE_JD_EVENT_JOB_INVALID;
ret = jd_done_nolock(katom, NULL);
goto out;
}
}
/* Validate the atom. Function will return error if the atom is
* malformed.
*
* Soft-jobs never enter the job scheduler but have their own initialize method.
*
* If either fail then we immediately complete the atom with an error.
*/
if ((katom->core_req & BASE_JD_REQ_SOFT_JOB) == 0) {
if (!kbase_js_is_atom_valid(kctx->kbdev, katom)) {
katom->event_code = BASE_JD_EVENT_JOB_INVALID;
ret = jd_done_nolock(katom, NULL);
goto out;
}
} else {
/* Soft-job */
if (kbase_prepare_soft_job(katom) != 0) {
katom->event_code = BASE_JD_EVENT_JOB_INVALID;
ret = jd_done_nolock(katom, NULL);
goto out;
}
}
#ifdef CONFIG_GPU_TRACEPOINTS
katom->work_id = atomic_inc_return(&jctx->work_id);
trace_gpu_job_enqueue((u32)kctx->id, katom->work_id,
kbasep_map_core_reqs_to_string(katom->core_req));
#endif
if (queued && !IS_GPU_ATOM(katom)) {
ret = false;
goto out;
}
#ifdef CONFIG_KDS
if (!katom->kds_dep_satisfied) {
/* Queue atom due to KDS dependency */
ret = false;
goto out;
}
#endif /* CONFIG_KDS */
#ifdef CONFIG_MALI_DMA_FENCE
if (atomic_read(&katom->dma_fence.dep_count) != -1) {
ret = false;
goto out;
}
#endif /* CONFIG_MALI_DMA_FENCE */
if ((katom->core_req & BASE_JD_REQ_SOFT_JOB_TYPE)
== BASE_JD_REQ_SOFT_REPLAY) {
if (kbase_replay_process(katom))
ret = false;
else
ret = jd_done_nolock(katom, NULL);
goto out;
} else if (katom->core_req & BASE_JD_REQ_SOFT_JOB) {
if (kbase_process_soft_job(katom) == 0) {
kbase_finish_soft_job(katom);
ret = jd_done_nolock(katom, NULL);
goto out;
}
ret = false;
} else if ((katom->core_req & BASE_JD_REQ_ATOM_TYPE) != BASE_JD_REQ_DEP) {
katom->status = KBASE_JD_ATOM_STATE_IN_JS;
ret = kbasep_js_add_job(kctx, katom);
/* If job was cancelled then resolve immediately */
if (katom->event_code == BASE_JD_EVENT_JOB_CANCELLED)
ret = jd_done_nolock(katom, NULL);
} else {
/* This is a pure dependency. Resolve it immediately */
ret = jd_done_nolock(katom, NULL);
}
out:
return ret;
}
#ifdef BASE_LEGACY_UK6_SUPPORT
int kbase_jd_submit(struct kbase_context *kctx,
const struct kbase_uk_job_submit *submit_data,
int uk6_atom)
#else
int kbase_jd_submit(struct kbase_context *kctx,
const struct kbase_uk_job_submit *submit_data)
#endif /* BASE_LEGACY_UK6_SUPPORT */
{
struct kbase_jd_context *jctx = &kctx->jctx;
int err = 0;
int i;
bool need_to_try_schedule_context = false;
struct kbase_device *kbdev;
void __user *user_addr;
u32 latest_flush;
/*
* kbase_jd_submit isn't expected to fail and so all errors with the jobs
* are reported by immediately falling them (through event system)
*/
kbdev = kctx->kbdev;
beenthere(kctx, "%s", "Enter");
if ((kctx->jctx.sched_info.ctx.flags & KBASE_CTX_FLAG_SUBMIT_DISABLED) != 0) {
dev_err(kbdev->dev, "Attempt to submit to a context that has SUBMIT_DISABLED set on it");
return -EINVAL;
}
#ifdef BASE_LEGACY_UK6_SUPPORT
if ((uk6_atom && submit_data->stride !=
sizeof(struct base_jd_atom_v2_uk6)) ||
submit_data->stride != sizeof(base_jd_atom_v2)) {
#else
if (submit_data->stride != sizeof(base_jd_atom_v2)) {
#endif /* BASE_LEGACY_UK6_SUPPORT */
dev_err(kbdev->dev, "Stride passed to job_submit doesn't match kernel");
return -EINVAL;
}
user_addr = get_compat_pointer(kctx, &submit_data->addr);
KBASE_TIMELINE_ATOMS_IN_FLIGHT(kctx, atomic_add_return(submit_data->nr_atoms, &kctx->timeline.jd_atoms_in_flight));
/* All atoms submitted in this call have the same flush ID */
latest_flush = kbase_backend_get_current_flush_id(kbdev);
for (i = 0; i < submit_data->nr_atoms; i++) {
struct base_jd_atom_v2 user_atom;
struct kbase_jd_atom *katom;
#ifdef BASE_LEGACY_UK6_SUPPORT
if (uk6_atom) {
struct base_jd_atom_v2_uk6 user_atom_v6;
base_jd_dep_type dep_types[2] = {BASE_JD_DEP_TYPE_DATA, BASE_JD_DEP_TYPE_DATA};
if (copy_from_user(&user_atom_v6, user_addr,
sizeof(user_atom_v6))) {
err = -EINVAL;
KBASE_TIMELINE_ATOMS_IN_FLIGHT(kctx,
atomic_sub_return(
submit_data->nr_atoms - i,
&kctx->timeline.jd_atoms_in_flight));
break;
}
/* Convert from UK6 atom format to UK7 format */
user_atom.jc = user_atom_v6.jc;
user_atom.udata = user_atom_v6.udata;
user_atom.extres_list = user_atom_v6.extres_list;
user_atom.nr_extres = user_atom_v6.nr_extres;
user_atom.core_req = (u32)(user_atom_v6.core_req & 0x7fff);
/* atom number 0 is used for no dependency atoms */
if (!user_atom_v6.pre_dep[0])
dep_types[0] = BASE_JD_DEP_TYPE_INVALID;
base_jd_atom_dep_set(&user_atom.pre_dep[0],
user_atom_v6.pre_dep[0],
dep_types[0]);
/* atom number 0 is used for no dependency atoms */
if (!user_atom_v6.pre_dep[1])
dep_types[1] = BASE_JD_DEP_TYPE_INVALID;
base_jd_atom_dep_set(&user_atom.pre_dep[1],
user_atom_v6.pre_dep[1],
dep_types[1]);
user_atom.atom_number = user_atom_v6.atom_number;
user_atom.prio = user_atom_v6.prio;
user_atom.device_nr = user_atom_v6.device_nr;
} else {
#endif /* BASE_LEGACY_UK6_SUPPORT */
if (copy_from_user(&user_atom, user_addr, sizeof(user_atom)) != 0) {
err = -EINVAL;
KBASE_TIMELINE_ATOMS_IN_FLIGHT(kctx, atomic_sub_return(submit_data->nr_atoms - i, &kctx->timeline.jd_atoms_in_flight));
break;
}
#ifdef BASE_LEGACY_UK6_SUPPORT
}
#endif /* BASE_LEGACY_UK6_SUPPORT */
#ifdef BASE_LEGACY_UK10_2_SUPPORT
if (KBASE_API_VERSION(10, 3) > kctx->api_version)
user_atom.core_req = (u32)(user_atom.compat_core_req
& 0x7fff);
#endif /* BASE_LEGACY_UK10_2_SUPPORT */
user_addr = (void __user *)((uintptr_t) user_addr + submit_data->stride);
mutex_lock(&jctx->lock);
#ifndef compiletime_assert
#define compiletime_assert_defined
#define compiletime_assert(x, msg) do { switch (0) { case 0: case (x):; } } \
while (false)
#endif
compiletime_assert((1 << (8*sizeof(user_atom.atom_number))) ==
BASE_JD_ATOM_COUNT,
"BASE_JD_ATOM_COUNT and base_atom_id type out of sync");
compiletime_assert(sizeof(user_atom.pre_dep[0].atom_id) ==
sizeof(user_atom.atom_number),
"BASE_JD_ATOM_COUNT and base_atom_id type out of sync");
#ifdef compiletime_assert_defined
#undef compiletime_assert
#undef compiletime_assert_defined
#endif
katom = &jctx->atoms[user_atom.atom_number];
/* Record the flush ID for the cache flush optimisation */
katom->flush_id = latest_flush;
while (katom->status != KBASE_JD_ATOM_STATE_UNUSED) {
/* Atom number is already in use, wait for the atom to
* complete
*/
mutex_unlock(&jctx->lock);
/* This thread will wait for the atom to complete. Due
* to thread scheduling we are not sure that the other
* thread that owns the atom will also schedule the
* context, so we force the scheduler to be active and
* hence eventually schedule this context at some point
* later.
*/
kbase_js_sched_all(kbdev);
if (wait_event_killable(katom->completed,
katom->status ==
KBASE_JD_ATOM_STATE_UNUSED) != 0) {
/* We're being killed so the result code
* doesn't really matter
*/
return 0;
}
mutex_lock(&jctx->lock);
}
need_to_try_schedule_context |=
jd_submit_atom(kctx, &user_atom, katom);
/* Register a completed job as a disjoint event when the GPU is in a disjoint state
* (ie. being reset or replaying jobs).
*/
kbase_disjoint_event_potential(kbdev);
mutex_unlock(&jctx->lock);
}
if (need_to_try_schedule_context)
kbase_js_sched_all(kbdev);
return err;
}
KBASE_EXPORT_TEST_API(kbase_jd_submit);
void kbase_jd_done_worker(struct work_struct *data)
{
struct kbase_jd_atom *katom = container_of(data, struct kbase_jd_atom, work);
struct kbase_jd_context *jctx;
struct kbase_context *kctx;
struct kbasep_js_kctx_info *js_kctx_info;
struct kbase_device *kbdev;
struct kbasep_js_device_data *js_devdata;
u64 cache_jc = katom->jc;
struct kbasep_js_atom_retained_state katom_retained_state;
bool schedule = false;
bool context_idle;
base_jd_core_req core_req = katom->core_req;
u64 affinity = katom->affinity;
enum kbase_atom_coreref_state coreref_state = katom->coreref_state;
/* Soft jobs should never reach this function */
KBASE_DEBUG_ASSERT((katom->core_req & BASE_JD_REQ_SOFT_JOB) == 0);
kctx = katom->kctx;
jctx = &kctx->jctx;
kbdev = kctx->kbdev;
js_kctx_info = &kctx->jctx.sched_info;
js_devdata = &kbdev->js_data;
KBASE_TRACE_ADD(kbdev, JD_DONE_WORKER, kctx, katom, katom->jc, 0);
kbase_backend_complete_wq(kbdev, katom);
/*
* Begin transaction on JD context and JS context
*/
mutex_lock(&jctx->lock);
mutex_lock(&js_devdata->queue_mutex);
mutex_lock(&js_kctx_info->ctx.jsctx_mutex);
/* This worker only gets called on contexts that are scheduled *in*. This is
* because it only happens in response to an IRQ from a job that was
* running.
*/
KBASE_DEBUG_ASSERT(js_kctx_info->ctx.is_scheduled);
if (katom->event_code == BASE_JD_EVENT_STOPPED) {
/* Atom has been promoted to stopped */
unsigned long flags;
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
mutex_unlock(&js_devdata->queue_mutex);
spin_lock_irqsave(&js_devdata->runpool_irq.lock, flags);
katom->status = KBASE_JD_ATOM_STATE_IN_JS;
kbase_js_unpull(kctx, katom);
spin_unlock_irqrestore(&js_devdata->runpool_irq.lock, flags);
mutex_unlock(&jctx->lock);
return;
}
if (katom->event_code != BASE_JD_EVENT_DONE)
dev_err(kbdev->dev,
"t6xx: GPU fault 0x%02lx from job slot %d\n",
(unsigned long)katom->event_code,
katom->slot_nr);
if (kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_8316))
kbase_as_poking_timer_release_atom(kbdev, kctx, katom);
/* Retain state before the katom disappears */
kbasep_js_atom_retained_state_copy(&katom_retained_state, katom);
if (!kbasep_js_has_atom_finished(&katom_retained_state)) {
mutex_lock(&js_devdata->runpool_mutex);
kbasep_js_clear_job_retry_submit(katom);
/* An atom that has been hard-stopped might have previously
* been soft-stopped and has just finished before the hard-stop
* occurred. For this reason, clear the hard-stopped flag */
katom->atom_flags &= ~(KBASE_KATOM_FLAG_BEEN_HARD_STOPPED);
mutex_unlock(&js_devdata->runpool_mutex);
}
if (kbasep_js_has_atom_finished(&katom_retained_state))
schedule = true;
context_idle = kbase_js_complete_atom_wq(kctx, katom);
KBASE_DEBUG_ASSERT(kbasep_js_has_atom_finished(&katom_retained_state));
kbasep_js_remove_job(kbdev, kctx, katom);
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
mutex_unlock(&js_devdata->queue_mutex);
katom->atom_flags &= ~KBASE_KATOM_FLAG_HOLDING_CTX_REF;
/* jd_done_nolock() requires the jsctx_mutex lock to be dropped */
schedule |= jd_done_nolock(katom, &kctx->completed_jobs);
/* katom may have been freed now, do not use! */
if (context_idle) {
unsigned long flags;
mutex_lock(&js_devdata->queue_mutex);
spin_lock_irqsave(&js_devdata->runpool_irq.lock, flags);
/* If kbase_sched() has scheduled this context back in then
* ctx_active will have been set after we marked it as inactive,
* and another pm reference will have been taken, so drop our
* reference. But do not call kbase_jm_idle_ctx(), as the
* context is active and fast-starting is allowed.
*
* If an atom has been fast-started then kctx->atoms_pulled will
* be non-zero but ctx_active will still be false (as the
* previous pm reference has been inherited). Do NOT drop our
* reference, as it has been re-used, and leave the context as
* active.
*
* If no new atoms have been started then ctx_active will still
* be false and atoms_pulled will be zero, so drop the reference
* and call kbase_jm_idle_ctx().
*
* As the checks are done under both the queue_mutex and
* runpool_irq.lock is should be impossible for this to race
* with the scheduler code.
*/
if (kctx->ctx_active || !atomic_read(&kctx->atoms_pulled)) {
/* Calling kbase_jm_idle_ctx() here will ensure that
* atoms are not fast-started when we drop the
* runpool_irq.lock. This is not performed if ctx_active
* is set as in that case another pm reference has been
* taken and a fast-start would be valid.
*/
if (!kctx->ctx_active)
kbase_jm_idle_ctx(kbdev, kctx);
spin_unlock_irqrestore(&js_devdata->runpool_irq.lock,
flags);
kbase_pm_context_idle(kbdev);
} else {
kctx->ctx_active = true;
spin_unlock_irqrestore(&js_devdata->runpool_irq.lock,
flags);
}
mutex_unlock(&js_devdata->queue_mutex);
}
/*
* Transaction complete
*/
mutex_unlock(&jctx->lock);
/* Job is now no longer running, so can now safely release the context
* reference, and handle any actions that were logged against the atom's retained state */
kbasep_js_runpool_release_ctx_and_katom_retained_state(kbdev, kctx, &katom_retained_state);
if (schedule)
kbase_js_sched_all(kbdev);
if (!atomic_dec_return(&kctx->work_count)) {
/* If worker now idle then post all events that jd_done_nolock()
* has queued */
mutex_lock(&jctx->lock);
while (!list_empty(&kctx->completed_jobs)) {
struct kbase_jd_atom *atom = list_entry(
kctx->completed_jobs.next,
struct kbase_jd_atom, jd_item);
list_del(kctx->completed_jobs.next);
kbase_event_post(kctx, atom);
}
mutex_unlock(&jctx->lock);
}
kbase_backend_complete_wq_post_sched(kbdev, core_req, affinity,
coreref_state);
KBASE_TRACE_ADD(kbdev, JD_DONE_WORKER_END, kctx, NULL, cache_jc, 0);
}
/**
* jd_cancel_worker - Work queue job cancel function.
* @data: a &struct work_struct
*
* Only called as part of 'Zapping' a context (which occurs on termination).
* Operates serially with the kbase_jd_done_worker() on the work queue.
*
* This can only be called on contexts that aren't scheduled.
*
* We don't need to release most of the resources that would occur on
* kbase_jd_done() or kbase_jd_done_worker(), because the atoms here must not be
* running (by virtue of only being called on contexts that aren't
* scheduled).
*/
static void jd_cancel_worker(struct work_struct *data)
{
struct kbase_jd_atom *katom = container_of(data, struct kbase_jd_atom, work);
struct kbase_jd_context *jctx;
struct kbase_context *kctx;
struct kbasep_js_kctx_info *js_kctx_info;
bool need_to_try_schedule_context;
bool attr_state_changed;
struct kbase_device *kbdev;
/* Soft jobs should never reach this function */
KBASE_DEBUG_ASSERT((katom->core_req & BASE_JD_REQ_SOFT_JOB) == 0);
kctx = katom->kctx;
kbdev = kctx->kbdev;
jctx = &kctx->jctx;
js_kctx_info = &kctx->jctx.sched_info;
KBASE_TRACE_ADD(kbdev, JD_CANCEL_WORKER, kctx, katom, katom->jc, 0);
/* This only gets called on contexts that are scheduled out. Hence, we must
* make sure we don't de-ref the number of running jobs (there aren't
* any), nor must we try to schedule out the context (it's already
* scheduled out).
*/
KBASE_DEBUG_ASSERT(!js_kctx_info->ctx.is_scheduled);
/* Scheduler: Remove the job from the system */
mutex_lock(&js_kctx_info->ctx.jsctx_mutex);
attr_state_changed = kbasep_js_remove_cancelled_job(kbdev, kctx, katom);
mutex_unlock(&js_kctx_info->ctx.jsctx_mutex);
mutex_lock(&jctx->lock);
need_to_try_schedule_context = jd_done_nolock(katom, NULL);
/* Because we're zapping, we're not adding any more jobs to this ctx, so no need to
* schedule the context. There's also no need for the jsctx_mutex to have been taken
* around this too. */
KBASE_DEBUG_ASSERT(!need_to_try_schedule_context);
/* katom may have been freed now, do not use! */
mutex_unlock(&jctx->lock);
if (attr_state_changed)
kbase_js_sched_all(kbdev);
}
/**
* kbase_jd_done - Complete a job that has been removed from the Hardware
* @katom: atom which has been completed
* @slot_nr: slot the atom was on
* @end_timestamp: completion time
* @done_code: completion code
*
* This must be used whenever a job has been removed from the Hardware, e.g.:
* An IRQ indicates that the job finished (for both error and 'done' codes), or
* the job was evicted from the JS_HEAD_NEXT registers during a Soft/Hard stop.
*
* Some work is carried out immediately, and the rest is deferred onto a
* workqueue
*
* Context:
* This can be called safely from atomic context.
* The caller must hold kbasep_js_device_data.runpool_irq.lock
*/
void kbase_jd_done(struct kbase_jd_atom *katom, int slot_nr,
ktime_t *end_timestamp, kbasep_js_atom_done_code done_code)
{
struct kbase_context *kctx;
struct kbase_device *kbdev;
KBASE_DEBUG_ASSERT(katom);
kctx = katom->kctx;
KBASE_DEBUG_ASSERT(kctx);
kbdev = kctx->kbdev;
KBASE_DEBUG_ASSERT(kbdev);
if (done_code & KBASE_JS_ATOM_DONE_EVICTED_FROM_NEXT)
katom->event_code = BASE_JD_EVENT_REMOVED_FROM_NEXT;
KBASE_TRACE_ADD(kbdev, JD_DONE, kctx, katom, katom->jc, 0);
kbase_job_check_leave_disjoint(kbdev, katom);
katom->slot_nr = slot_nr;
atomic_inc(&kctx->work_count);
#ifdef CONFIG_DEBUG_FS
/* a failed job happened and is waiting for dumping*/
if (!katom->will_fail_event_code &&
kbase_debug_job_fault_process(katom, katom->event_code))
return;
#endif
WARN_ON(work_pending(&katom->work));
KBASE_DEBUG_ASSERT(0 == object_is_on_stack(&katom->work));
INIT_WORK(&katom->work, kbase_jd_done_worker);
queue_work(kctx->jctx.job_done_wq, &katom->work);
}
KBASE_EXPORT_TEST_API(kbase_jd_done);
void kbase_jd_cancel(struct kbase_device *kbdev, struct kbase_jd_atom *katom)
{
struct kbase_context *kctx;
struct kbasep_js_kctx_info *js_kctx_info;
KBASE_DEBUG_ASSERT(NULL != kbdev);
KBASE_DEBUG_ASSERT(NULL != katom);
kctx = katom->kctx;
KBASE_DEBUG_ASSERT(NULL != kctx);
js_kctx_info = &kctx->jctx.sched_info;
KBASE_TRACE_ADD(kbdev, JD_CANCEL, kctx, katom, katom->jc, 0);
/* This should only be done from a context that is not scheduled */
KBASE_DEBUG_ASSERT(!js_kctx_info->ctx.is_scheduled);
WARN_ON(work_pending(&katom->work));
katom->event_code = BASE_JD_EVENT_JOB_CANCELLED;
KBASE_DEBUG_ASSERT(0 == object_is_on_stack(&katom->work));
INIT_WORK(&katom->work, jd_cancel_worker);
queue_work(kctx->jctx.job_done_wq, &katom->work);
}
void kbase_jd_zap_context(struct kbase_context *kctx)
{
struct kbase_jd_atom *katom;
struct list_head *entry, *tmp;
struct kbase_device *kbdev;
KBASE_DEBUG_ASSERT(kctx);
kbdev = kctx->kbdev;
KBASE_TRACE_ADD(kbdev, JD_ZAP_CONTEXT, kctx, NULL, 0u, 0u);
kbase_js_zap_context(kctx);
mutex_lock(&kctx->jctx.lock);
/*
* While holding the struct kbase_jd_context lock clean up jobs which are known to kbase but are
* queued outside the job scheduler.
*/
del_timer_sync(&kctx->soft_job_timeout);
list_for_each_safe(entry, tmp, &kctx->waiting_soft_jobs) {
katom = list_entry(entry, struct kbase_jd_atom, queue);
kbase_cancel_soft_job(katom);
}
#ifdef CONFIG_KDS
/* For each job waiting on a kds resource, cancel the wait and force the job to
* complete early, this is done so that we don't leave jobs outstanding waiting
* on kds resources which may never be released when contexts are zapped, resulting
* in a hang.
*
* Note that we can safely iterate over the list as the struct kbase_jd_context lock is held,
* this prevents items being removed when calling job_done_nolock in kbase_cancel_kds_wait_job.
*/
list_for_each(entry, &kctx->waiting_kds_resource) {
katom = list_entry(entry, struct kbase_jd_atom, node);
kbase_cancel_kds_wait_job(katom);
}
#endif
#ifdef CONFIG_MALI_DMA_FENCE
kbase_dma_fence_cancel_all_atoms(kctx);
#endif
mutex_unlock(&kctx->jctx.lock);
#ifdef CONFIG_MALI_DMA_FENCE
/* Flush dma-fence workqueue to ensure that any callbacks that may have
* been queued are done before continuing.
*/
flush_workqueue(kctx->dma_fence.wq);
#endif
kbase_jm_wait_for_zero_jobs(kctx);
}
KBASE_EXPORT_TEST_API(kbase_jd_zap_context);
int kbase_jd_init(struct kbase_context *kctx)
{
int i;
int mali_err = 0;
#ifdef CONFIG_KDS
int err;
#endif /* CONFIG_KDS */
KBASE_DEBUG_ASSERT(kctx);
kctx->jctx.job_done_wq = alloc_workqueue("mali_jd",
WQ_HIGHPRI | WQ_UNBOUND, 1);
if (NULL == kctx->jctx.job_done_wq) {
mali_err = -ENOMEM;
goto out1;
}
for (i = 0; i < BASE_JD_ATOM_COUNT; i++) {
init_waitqueue_head(&kctx->jctx.atoms[i].completed);
INIT_LIST_HEAD(&kctx->jctx.atoms[i].dep_head[0]);
INIT_LIST_HEAD(&kctx->jctx.atoms[i].dep_head[1]);
/* Catch userspace attempting to use an atom which doesn't exist as a pre-dependency */
kctx->jctx.atoms[i].event_code = BASE_JD_EVENT_JOB_INVALID;
kctx->jctx.atoms[i].status = KBASE_JD_ATOM_STATE_UNUSED;
#ifdef CONFIG_MALI_DMA_FENCE
kctx->jctx.atoms[i].dma_fence.context = fence_context_alloc(1);
atomic_set(&kctx->jctx.atoms[i].dma_fence.seqno, 0);
INIT_LIST_HEAD(&kctx->jctx.atoms[i].dma_fence.callbacks);
#endif
}
mutex_init(&kctx->jctx.lock);
init_waitqueue_head(&kctx->jctx.zero_jobs_wait);
spin_lock_init(&kctx->jctx.tb_lock);
#ifdef CONFIG_KDS
err = kds_callback_init(&kctx->jctx.kds_cb, 0, kds_dep_clear);
if (0 != err) {
mali_err = -EINVAL;
goto out2;
}
#endif /* CONFIG_KDS */
kctx->jctx.job_nr = 0;
INIT_LIST_HEAD(&kctx->completed_jobs);
atomic_set(&kctx->work_count, 0);
return 0;
#ifdef CONFIG_KDS
out2:
destroy_workqueue(kctx->jctx.job_done_wq);
#endif /* CONFIG_KDS */
out1:
return mali_err;
}
KBASE_EXPORT_TEST_API(kbase_jd_init);
void kbase_jd_exit(struct kbase_context *kctx)
{
KBASE_DEBUG_ASSERT(kctx);
#ifdef CONFIG_KDS
kds_callback_term(&kctx->jctx.kds_cb);
#endif /* CONFIG_KDS */
/* Work queue is emptied by this */
destroy_workqueue(kctx->jctx.job_done_wq);
}
KBASE_EXPORT_TEST_API(kbase_jd_exit);