From f347fde22f1297e4f022600d201780d5ead78114 Mon Sep 17 00:00:00 2001 From: Joshua Bakita Date: Wed, 25 Sep 2024 16:09:09 -0400 Subject: Delete no-longer-needed nvgpu headers The dependency on these was removed in commit 8340d234. --- include/os/linux/sync_sema_android.c | 418 ----------------------------------- 1 file changed, 418 deletions(-) delete mode 100644 include/os/linux/sync_sema_android.c (limited to 'include/os/linux/sync_sema_android.c') diff --git a/include/os/linux/sync_sema_android.c b/include/os/linux/sync_sema_android.c deleted file mode 100644 index 59e3b7a..0000000 --- a/include/os/linux/sync_sema_android.c +++ /dev/null @@ -1,418 +0,0 @@ -/* - * Semaphore Sync Framework Integration - * - * Copyright (c) 2017-2018, NVIDIA Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include "../linux/channel.h" - -#include "../drivers/staging/android/sync.h" - -#include "sync_sema_android.h" - -static const struct sync_timeline_ops gk20a_sync_timeline_ops; - -struct gk20a_sync_timeline { - struct sync_timeline obj; - u32 max; - u32 min; -}; - -/** - * The sync framework dups pts when merging fences. We share a single - * refcounted gk20a_sync_pt for each duped pt. - */ -struct gk20a_sync_pt { - struct gk20a *g; - struct nvgpu_ref refcount; - u32 thresh; - struct nvgpu_semaphore *sema; - struct gk20a_sync_timeline *obj; - - /* - * Use a spin lock here since it will have better performance - * than a mutex - there should be very little contention on this - * lock. - */ - struct nvgpu_spinlock lock; -}; - -struct gk20a_sync_pt_inst { - struct sync_pt pt; - struct gk20a_sync_pt *shared; -}; - -/** - * Compares sync pt values a and b, both of which will trigger either before - * or after ref (i.e. a and b trigger before ref, or a and b trigger after - * ref). Supplying ref allows us to handle wrapping correctly. - * - * Returns -1 if a < b (a triggers before b) - * 0 if a = b (a and b trigger at the same time) - * 1 if a > b (b triggers before a) - */ -static int __gk20a_sync_pt_compare_ref( - u32 ref, - u32 a, - u32 b) -{ - /* - * We normalize both a and b by subtracting ref from them. - * Denote the normalized values by a_n and b_n. Note that because - * of wrapping, a_n and/or b_n may be negative. - * - * The normalized values a_n and b_n satisfy: - * - a positive value triggers before a negative value - * - a smaller positive value triggers before a greater positive value - * - a smaller negative value (greater in absolute value) triggers - * before a greater negative value (smaller in absolute value). - * - * Thus we can just stick to unsigned arithmetic and compare - * (u32)a_n to (u32)b_n. - * - * Just to reiterate the possible cases: - * - * 1A) ...ref..a....b.... - * 1B) ...ref..b....a.... - * 2A) ...b....ref..a.... b_n < 0 - * 2B) ...a....ref..b.... a_n > 0 - * 3A) ...a....b....ref.. a_n < 0, b_n < 0 - * 3A) ...b....a....ref.. a_n < 0, b_n < 0 - */ - u32 a_n = a - ref; - u32 b_n = b - ref; - if (a_n < b_n) - return -1; - else if (a_n > b_n) - return 1; - else - return 0; -} - -static struct gk20a_sync_pt *to_gk20a_sync_pt(struct sync_pt *pt) -{ - struct gk20a_sync_pt_inst *pti = - container_of(pt, struct gk20a_sync_pt_inst, pt); - return pti->shared; -} -static struct gk20a_sync_timeline *to_gk20a_timeline(struct sync_timeline *obj) -{ - if (WARN_ON(obj->ops != &gk20a_sync_timeline_ops)) - return NULL; - return (struct gk20a_sync_timeline *)obj; -} - -static void gk20a_sync_pt_free_shared(struct nvgpu_ref *ref) -{ - struct gk20a_sync_pt *pt = - container_of(ref, struct gk20a_sync_pt, refcount); - struct gk20a *g = pt->g; - - if (pt->sema) - nvgpu_semaphore_put(pt->sema); - nvgpu_kfree(g, pt); -} - -static struct gk20a_sync_pt *gk20a_sync_pt_create_shared( - struct gk20a *g, - struct gk20a_sync_timeline *obj, - struct nvgpu_semaphore *sema) -{ - struct gk20a_sync_pt *shared; - - shared = nvgpu_kzalloc(g, sizeof(*shared)); - if (!shared) - return NULL; - - nvgpu_ref_init(&shared->refcount); - shared->g = g; - shared->obj = obj; - shared->sema = sema; - shared->thresh = ++obj->max; /* sync framework has a lock */ - - nvgpu_spinlock_init(&shared->lock); - - nvgpu_semaphore_get(sema); - - return shared; -} - -static struct sync_pt *gk20a_sync_pt_create_inst( - struct gk20a *g, - struct gk20a_sync_timeline *obj, - struct nvgpu_semaphore *sema) -{ - struct gk20a_sync_pt_inst *pti; - - pti = (struct gk20a_sync_pt_inst *) - sync_pt_create(&obj->obj, sizeof(*pti)); - if (!pti) - return NULL; - - pti->shared = gk20a_sync_pt_create_shared(g, obj, sema); - if (!pti->shared) { - sync_pt_free(&pti->pt); - return NULL; - } - return &pti->pt; -} - -static void gk20a_sync_pt_free_inst(struct sync_pt *sync_pt) -{ - struct gk20a_sync_pt *pt = to_gk20a_sync_pt(sync_pt); - if (pt) - nvgpu_ref_put(&pt->refcount, gk20a_sync_pt_free_shared); -} - -static struct sync_pt *gk20a_sync_pt_dup_inst(struct sync_pt *sync_pt) -{ - struct gk20a_sync_pt_inst *pti; - struct gk20a_sync_pt *pt = to_gk20a_sync_pt(sync_pt); - - pti = (struct gk20a_sync_pt_inst *) - sync_pt_create(&pt->obj->obj, sizeof(*pti)); - if (!pti) - return NULL; - pti->shared = pt; - nvgpu_ref_get(&pt->refcount); - return &pti->pt; -} - -/* - * This function must be able to run on the same sync_pt concurrently. This - * requires a lock to protect access to the sync_pt's internal data structures - * which are modified as a side effect of calling this function. - */ -static int gk20a_sync_pt_has_signaled(struct sync_pt *sync_pt) -{ - struct gk20a_sync_pt *pt = to_gk20a_sync_pt(sync_pt); - struct gk20a_sync_timeline *obj = pt->obj; - bool signaled = true; - - nvgpu_spinlock_acquire(&pt->lock); - if (!pt->sema) - goto done; - - /* Acquired == not realeased yet == active == not signaled. */ - signaled = !nvgpu_semaphore_is_acquired(pt->sema); - - if (signaled) { - /* Update min if necessary. */ - if (__gk20a_sync_pt_compare_ref(obj->max, pt->thresh, - obj->min) == 1) - obj->min = pt->thresh; - - /* Release the semaphore to the pool. */ - nvgpu_semaphore_put(pt->sema); - pt->sema = NULL; - } -done: - nvgpu_spinlock_release(&pt->lock); - - return signaled; -} - -static int gk20a_sync_pt_compare(struct sync_pt *a, struct sync_pt *b) -{ - bool a_expired; - bool b_expired; - struct gk20a_sync_pt *pt_a = to_gk20a_sync_pt(a); - struct gk20a_sync_pt *pt_b = to_gk20a_sync_pt(b); - - if (WARN_ON(pt_a->obj != pt_b->obj)) - return 0; - - /* Early out */ - if (a == b) - return 0; - - a_expired = gk20a_sync_pt_has_signaled(a); - b_expired = gk20a_sync_pt_has_signaled(b); - if (a_expired && !b_expired) { - /* Easy, a was earlier */ - return -1; - } else if (!a_expired && b_expired) { - /* Easy, b was earlier */ - return 1; - } - - /* Both a and b are expired (trigger before min) or not - * expired (trigger after min), so we can use min - * as a reference value for __gk20a_sync_pt_compare_ref. - */ - return __gk20a_sync_pt_compare_ref(pt_a->obj->min, - pt_a->thresh, pt_b->thresh); -} - -static u32 gk20a_sync_timeline_current(struct gk20a_sync_timeline *obj) -{ - return obj->min; -} - -static void gk20a_sync_timeline_value_str(struct sync_timeline *timeline, - char *str, int size) -{ - struct gk20a_sync_timeline *obj = - (struct gk20a_sync_timeline *)timeline; - snprintf(str, size, "%d", gk20a_sync_timeline_current(obj)); -} - -static void gk20a_sync_pt_value_str_for_sema(struct gk20a_sync_pt *pt, - char *str, int size) -{ - struct nvgpu_semaphore *s = pt->sema; - - snprintf(str, size, "S: pool=%llu [v=%u,r_v=%u]", - s->location.pool->page_idx, - nvgpu_semaphore_get_value(s), - nvgpu_semaphore_read(s)); -} - -static void gk20a_sync_pt_value_str(struct sync_pt *sync_pt, char *str, - int size) -{ - struct gk20a_sync_pt *pt = to_gk20a_sync_pt(sync_pt); - - if (pt->sema) { - gk20a_sync_pt_value_str_for_sema(pt, str, size); - return; - } - - snprintf(str, size, "%d", pt->thresh); -} - -static const struct sync_timeline_ops gk20a_sync_timeline_ops = { - .driver_name = "nvgpu_semaphore", - .dup = gk20a_sync_pt_dup_inst, - .has_signaled = gk20a_sync_pt_has_signaled, - .compare = gk20a_sync_pt_compare, - .free_pt = gk20a_sync_pt_free_inst, - .timeline_value_str = gk20a_sync_timeline_value_str, - .pt_value_str = gk20a_sync_pt_value_str, -}; - -/* Public API */ - -struct sync_fence *gk20a_sync_fence_fdget(int fd) -{ - struct sync_fence *fence = sync_fence_fdget(fd); - int i; - - if (!fence) - return NULL; - - for (i = 0; i < fence->num_fences; i++) { - struct sync_pt *spt = sync_pt_from_fence(fence->cbs[i].sync_pt); - struct sync_timeline *t; - - if (spt == NULL) { - sync_fence_put(fence); - return NULL; - } - - t = sync_pt_parent(spt); - if (t->ops != &gk20a_sync_timeline_ops) { - sync_fence_put(fence); - return NULL; - } - } - - return fence; -} - -struct nvgpu_semaphore *gk20a_sync_pt_sema(struct sync_pt *spt) -{ - struct gk20a_sync_pt *pt = to_gk20a_sync_pt(spt); - struct nvgpu_semaphore *sema; - - nvgpu_spinlock_acquire(&pt->lock); - sema = pt->sema; - if (sema) - nvgpu_semaphore_get(sema); - nvgpu_spinlock_release(&pt->lock); - - return sema; -} - -void gk20a_sync_timeline_signal(struct sync_timeline *timeline) -{ - sync_timeline_signal(timeline, 0); -} - -void gk20a_sync_timeline_destroy(struct sync_timeline *timeline) -{ - sync_timeline_destroy(timeline); -} - -struct sync_timeline *gk20a_sync_timeline_create( - const char *name) -{ - struct gk20a_sync_timeline *obj; - - obj = (struct gk20a_sync_timeline *) - sync_timeline_create(&gk20a_sync_timeline_ops, - sizeof(struct gk20a_sync_timeline), - name); - if (!obj) - return NULL; - obj->max = 0; - obj->min = 0; - return &obj->obj; -} - -struct sync_fence *gk20a_sync_fence_create( - struct channel_gk20a *c, - struct nvgpu_semaphore *sema, - const char *fmt, ...) -{ - char name[30]; - va_list args; - struct sync_pt *pt; - struct sync_fence *fence; - struct gk20a *g = c->g; - - struct nvgpu_channel_linux *os_channel_priv = c->os_priv; - struct nvgpu_os_fence_framework *fence_framework = NULL; - struct gk20a_sync_timeline *timeline = NULL; - - fence_framework = &os_channel_priv->fence_framework; - - timeline = to_gk20a_timeline(fence_framework->timeline); - - pt = gk20a_sync_pt_create_inst(g, timeline, sema); - if (pt == NULL) - return NULL; - - va_start(args, fmt); - vsnprintf(name, sizeof(name), fmt, args); - va_end(args); - - fence = sync_fence_create(name, pt); - if (fence == NULL) { - sync_pt_free(pt); - return NULL; - } - return fence; -} -- cgit v1.2.2