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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/etnaviv/etnaviv_sched.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/etnaviv/etnaviv_sched.c')
-rw-r--r--drivers/gpu/drm/etnaviv/etnaviv_sched.c149
1 files changed, 149 insertions, 0 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.c b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
new file mode 100644
index 000000000..72e2553fb
--- /dev/null
+++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2017 Etnaviv Project
+ */
+
+#include <linux/moduleparam.h>
+
+#include "etnaviv_drv.h"
+#include "etnaviv_dump.h"
+#include "etnaviv_gem.h"
+#include "etnaviv_gpu.h"
+#include "etnaviv_sched.h"
+#include "state.xml.h"
+
+static int etnaviv_job_hang_limit = 0;
+module_param_named(job_hang_limit, etnaviv_job_hang_limit, int , 0444);
+static int etnaviv_hw_jobs_limit = 4;
+module_param_named(hw_job_limit, etnaviv_hw_jobs_limit, int , 0444);
+
+static struct dma_fence *etnaviv_sched_run_job(struct drm_sched_job *sched_job)
+{
+ struct etnaviv_gem_submit *submit = to_etnaviv_submit(sched_job);
+ struct dma_fence *fence = NULL;
+
+ if (likely(!sched_job->s_fence->finished.error))
+ fence = etnaviv_gpu_submit(submit);
+ else
+ dev_dbg(submit->gpu->dev, "skipping bad job\n");
+
+ return fence;
+}
+
+static enum drm_gpu_sched_stat etnaviv_sched_timedout_job(struct drm_sched_job
+ *sched_job)
+{
+ struct etnaviv_gem_submit *submit = to_etnaviv_submit(sched_job);
+ struct etnaviv_gpu *gpu = submit->gpu;
+ u32 dma_addr;
+ int change;
+
+ /* block scheduler */
+ drm_sched_stop(&gpu->sched, sched_job);
+
+ /*
+ * If the GPU managed to complete this jobs fence, the timout is
+ * spurious. Bail out.
+ */
+ if (dma_fence_is_signaled(submit->out_fence))
+ goto out_no_timeout;
+
+ /*
+ * If the GPU is still making forward progress on the front-end (which
+ * should never loop) we shift out the timeout to give it a chance to
+ * finish the job.
+ */
+ dma_addr = gpu_read(gpu, VIVS_FE_DMA_ADDRESS);
+ change = dma_addr - gpu->hangcheck_dma_addr;
+ if (gpu->completed_fence != gpu->hangcheck_fence ||
+ change < 0 || change > 16) {
+ gpu->hangcheck_dma_addr = dma_addr;
+ gpu->hangcheck_fence = gpu->completed_fence;
+ goto out_no_timeout;
+ }
+
+ if(sched_job)
+ drm_sched_increase_karma(sched_job);
+
+ /* get the GPU back into the init state */
+ etnaviv_core_dump(submit);
+ etnaviv_gpu_recover_hang(gpu);
+
+ drm_sched_resubmit_jobs(&gpu->sched);
+
+ drm_sched_start(&gpu->sched, true);
+ return DRM_GPU_SCHED_STAT_NOMINAL;
+
+out_no_timeout:
+ /* restart scheduler after GPU is usable again */
+ drm_sched_start(&gpu->sched, true);
+ return DRM_GPU_SCHED_STAT_NOMINAL;
+}
+
+static void etnaviv_sched_free_job(struct drm_sched_job *sched_job)
+{
+ struct etnaviv_gem_submit *submit = to_etnaviv_submit(sched_job);
+
+ drm_sched_job_cleanup(sched_job);
+
+ etnaviv_submit_put(submit);
+}
+
+static const struct drm_sched_backend_ops etnaviv_sched_ops = {
+ .run_job = etnaviv_sched_run_job,
+ .timedout_job = etnaviv_sched_timedout_job,
+ .free_job = etnaviv_sched_free_job,
+};
+
+int etnaviv_sched_push_job(struct etnaviv_gem_submit *submit)
+{
+ int ret = 0;
+
+ /*
+ * Hold the fence lock across the whole operation to avoid jobs being
+ * pushed out of order with regard to their sched fence seqnos as
+ * allocated in drm_sched_job_arm.
+ */
+ mutex_lock(&submit->gpu->fence_lock);
+
+ drm_sched_job_arm(&submit->sched_job);
+
+ submit->out_fence = dma_fence_get(&submit->sched_job.s_fence->finished);
+ submit->out_fence_id = idr_alloc_cyclic(&submit->gpu->fence_idr,
+ submit->out_fence, 0,
+ INT_MAX, GFP_KERNEL);
+ if (submit->out_fence_id < 0) {
+ drm_sched_job_cleanup(&submit->sched_job);
+ ret = -ENOMEM;
+ goto out_unlock;
+ }
+
+ /* the scheduler holds on to the job now */
+ kref_get(&submit->refcount);
+
+ drm_sched_entity_push_job(&submit->sched_job);
+
+out_unlock:
+ mutex_unlock(&submit->gpu->fence_lock);
+
+ return ret;
+}
+
+int etnaviv_sched_init(struct etnaviv_gpu *gpu)
+{
+ int ret;
+
+ ret = drm_sched_init(&gpu->sched, &etnaviv_sched_ops,
+ etnaviv_hw_jobs_limit, etnaviv_job_hang_limit,
+ msecs_to_jiffies(500), NULL, NULL,
+ dev_name(gpu->dev), gpu->dev);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+void etnaviv_sched_fini(struct etnaviv_gpu *gpu)
+{
+ drm_sched_fini(&gpu->sched);
+}