[PATCH] accel/ivpu: Reserve all non-command bo's using DMA_RESV_USAGE_BOOKKEEP

[Stanislaw Gruszka]

Use DMA_RESV_USAGE_BOOKKEEP reservation for buffer objects, except for
command buffers for which we use DMA_RESV_USAGE_WRITE (since VPU can
write to command buffer context save area).

Fixes: 0ec8671837a6 ("accel/ivpu: Fix S3 system suspend when not idle")
Signed-off-by: Stanislaw Gruszka <stanislaw.grus...@linux.intel.com>
---
 drivers/accel/ivpu/ivpu_job.c | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/drivers/accel/ivpu/ivpu_job.c b/drivers/accel/ivpu/ivpu_job.c
index 3c6f1e16cf2f..d45be0615b47 100644
--- a/drivers/accel/ivpu/ivpu_job.c
+++ b/drivers/accel/ivpu/ivpu_job.c
@@ -431,6 +431,7 @@ ivpu_job_prepare_bos_for_submit(struct drm_file *file, 
struct ivpu_job *job, u32
        struct ivpu_file_priv *file_priv = file->driver_priv;
        struct ivpu_device *vdev = file_priv->vdev;
        struct ww_acquire_ctx acquire_ctx;
+       enum dma_resv_usage usage;
        struct ivpu_bo *bo;
        int ret;
        u32 i;
@@ -461,22 +462,28 @@ ivpu_job_prepare_bos_for_submit(struct drm_file *file, 
struct ivpu_job *job, u32
 
        job->cmd_buf_vpu_addr = bo->vpu_addr + commands_offset;
 
-       ret = drm_gem_lock_reservations((struct drm_gem_object **)job->bos, 1, 
&acquire_ctx);
+       ret = drm_gem_lock_reservations((struct drm_gem_object **)job->bos, 
buf_count,
+                                       &acquire_ctx);
        if (ret) {
                ivpu_warn(vdev, "Failed to lock reservations: %d\n", ret);
                return ret;
        }
 
-       ret = dma_resv_reserve_fences(bo->base.resv, 1);
-       if (ret) {
-               ivpu_warn(vdev, "Failed to reserve fences: %d\n", ret);
-               goto unlock_reservations;
+       for (i = 0; i < buf_count; i++) {
+               ret = dma_resv_reserve_fences(job->bos[i]->base.resv, 1);
+               if (ret) {
+                       ivpu_warn(vdev, "Failed to reserve fences: %d\n", ret);
+                       goto unlock_reservations;
+               }
        }
 
-       dma_resv_add_fence(bo->base.resv, job->done_fence, 
DMA_RESV_USAGE_WRITE);
+       for (i = 0; i < buf_count; i++) {
+               usage = (i == CMD_BUF_IDX) ? DMA_RESV_USAGE_WRITE : 
DMA_RESV_USAGE_BOOKKEEP;
+               dma_resv_add_fence(job->bos[i]->base.resv, job->done_fence, 
usage);
+       }
 
 unlock_reservations:
-       drm_gem_unlock_reservations((struct drm_gem_object **)job->bos, 1, 
&acquire_ctx);
+       drm_gem_unlock_reservations((struct drm_gem_object **)job->bos, 
buf_count, &acquire_ctx);
 
        wmb(); /* Flush write combining buffers */
 
-- 
2.25.1