On Wed, Oct 16, 2024 at 08:53:05PM -0700, Lizhi Hou wrote:
>
> On 10/14/24 19:13, Matthew Brost wrote:
> > On Fri, Oct 11, 2024 at 04:12:41PM -0700, Lizhi Hou wrote:
> > > Add interfaces for user application to submit command and wait for its
> > > completion.
> > >
> > > Co-developed-by: Min Ma <min.ma@xxxxxxx>
> > > Signed-off-by: Min Ma <min.ma@xxxxxxx>
> > > Signed-off-by: Lizhi Hou <lizhi.hou@xxxxxxx>
> > > ---
> > > drivers/accel/amdxdna/aie2_ctx.c | 624 +++++++++++++++++-
> > > drivers/accel/amdxdna/aie2_message.c | 343 ++++++++++
> > > drivers/accel/amdxdna/aie2_pci.c | 6 +
> > > drivers/accel/amdxdna/aie2_pci.h | 35 +
> > > drivers/accel/amdxdna/aie2_psp.c | 2 +
> > > drivers/accel/amdxdna/aie2_smu.c | 2 +
> > > drivers/accel/amdxdna/amdxdna_ctx.c | 375 ++++++++++-
> > > drivers/accel/amdxdna/amdxdna_ctx.h | 110 +++
> > > drivers/accel/amdxdna/amdxdna_gem.c | 1 +
> > > .../accel/amdxdna/amdxdna_mailbox_helper.c | 5 +
> > > drivers/accel/amdxdna/amdxdna_pci_drv.c | 6 +
> > > drivers/accel/amdxdna/amdxdna_pci_drv.h | 5 +
> > > drivers/accel/amdxdna/amdxdna_sysfs.c | 5 +
> > > drivers/accel/amdxdna/npu1_regs.c | 1 +
> > > drivers/accel/amdxdna/npu2_regs.c | 1 +
> > > drivers/accel/amdxdna/npu4_regs.c | 1 +
> > > drivers/accel/amdxdna/npu5_regs.c | 1 +
> > > include/trace/events/amdxdna.h | 41 ++
> > > include/uapi/drm/amdxdna_accel.h | 59 ++
> > > 19 files changed, 1614 insertions(+), 9 deletions(-)
> > >
> > > diff --git a/drivers/accel/amdxdna/aie2_ctx.c b/drivers/accel/amdxdna/aie2_ctx.c
> > > index 617fc05077d9..f9010a902c99 100644
> > > --- a/drivers/accel/amdxdna/aie2_ctx.c
> > > +++ b/drivers/accel/amdxdna/aie2_ctx.c
> > > @@ -8,8 +8,11 @@
> > > #include <drm/drm_gem.h>
> > > #include <drm/drm_gem_shmem_helper.h>
> > > #include <drm/drm_print.h>
> > > +#include <linux/hmm.h>
> > > #include <linux/types.h>
> > > +#include <trace/events/amdxdna.h>
> > > +#include "aie2_msg_priv.h"
> > > #include "aie2_pci.h"
> > > #include "aie2_solver.h"
> > > #include "amdxdna_ctx.h"
> > > @@ -17,6 +20,361 @@
> > > #include "amdxdna_mailbox.h"
> > > #include "amdxdna_pci_drv.h"
> > > +bool force_cmdlist;
> > > +module_param(force_cmdlist, bool, 0600);
> > > +MODULE_PARM_DESC(force_cmdlist, "Force use command list (Default false)");
> > > +
> > > +#define HWCTX_MAX_TIMEOUT 60000 /* miliseconds */
> > > +
> > > +static int
> > > +aie2_hwctx_add_job(struct amdxdna_hwctx *hwctx, struct amdxdna_sched_job *job)
> > > +{
> > > + struct amdxdna_sched_job *other;
> > > + int idx;
> > > +
> > > + idx = get_job_idx(hwctx->priv->seq);
> > > + /* When pending list full, hwctx->seq points to oldest fence */
> > > + other = hwctx->priv->pending[idx];
> > > + if (other && other->fence)
> > > + return -EAGAIN;
> > > +
> > > + if (other) {
> > > + dma_fence_put(other->out_fence);
> > > + amdxdna_job_put(other);
> > > + }
> > > +
> > > + hwctx->priv->pending[idx] = job;
> > > + job->seq = hwctx->priv->seq++;
> > > + kref_get(&job->refcnt);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static struct amdxdna_sched_job *
> > > +aie2_hwctx_get_job(struct amdxdna_hwctx *hwctx, u64 seq)
> > > +{
> > > + int idx;
> > > +
> > > + /* Special sequence number for oldest fence if exist */
> > > + if (seq == AMDXDNA_INVALID_CMD_HANDLE) {
> > > + idx = get_job_idx(hwctx->priv->seq);
> > > + goto out;
> > > + }
> > > +
> > > + if (seq >= hwctx->priv->seq)
> > > + return ERR_PTR(-EINVAL);
> > > +
> > > + if (seq + HWCTX_MAX_CMDS < hwctx->priv->seq)
> > > + return NULL;
> > > +
> > > + idx = get_job_idx(seq);
> > > +
> > > +out:
> > > + return hwctx->priv->pending[idx];
> > > +}
> > > +
> > > +/* The bad_job is used in aie2_sched_job_timedout, otherwise, set it to NULL */
> > > +static void aie2_hwctx_stop(struct amdxdna_dev *xdna, struct amdxdna_hwctx *hwctx,
> > > + struct drm_sched_job *bad_job)
> > > +{
> > > + drm_sched_stop(&hwctx->priv->sched, bad_job);
> > > + aie2_destroy_context(xdna->dev_handle, hwctx);
> > > +}
> > > +
> > > +static int aie2_hwctx_restart(struct amdxdna_dev *xdna, struct amdxdna_hwctx *hwctx)
> > > +{
> > > + struct amdxdna_gem_obj *heap = hwctx->priv->heap;
> > > + int ret;
> > > +
> > > + ret = aie2_create_context(xdna->dev_handle, hwctx);
> > > + if (ret) {
> > > + XDNA_ERR(xdna, "Create hwctx failed, ret %d", ret);
> > > + goto out;
> > > + }
> > > +
> > > + ret = aie2_map_host_buf(xdna->dev_handle, hwctx->fw_ctx_id,
> > > + heap->mem.userptr, heap->mem.size);
> > > + if (ret) {
> > > + XDNA_ERR(xdna, "Map host buf failed, ret %d", ret);
> > > + goto out;
> > > + }
> > > +
> > > + if (hwctx->status != HWCTX_STAT_READY) {
> > > + XDNA_DBG(xdna, "hwctx is not ready, status %d", hwctx->status);
> > > + goto out;
> > > + }
> > > +
> > > + ret = aie2_config_cu(hwctx);
> > > + if (ret) {
> > > + XDNA_ERR(xdna, "Config cu failed, ret %d", ret);
> > > + goto out;
> > > + }
> > > +
> > > +out:
> > > + drm_sched_start(&hwctx->priv->sched);
> > > + XDNA_DBG(xdna, "%s restarted, ret %d", hwctx->name, ret);
> > > + return ret;
> > > +}
> > > +
> > > +void aie2_stop_ctx_by_col_map(struct amdxdna_client *client, u32 col_map)
> > > +{
> > > + struct amdxdna_dev *xdna = client->xdna;
> > > + struct amdxdna_hwctx *hwctx;
> > > + int next = 0;
> > > +
> > > + drm_WARN_ON(&xdna->ddev, !mutex_is_locked(&xdna->dev_lock));
> > > + mutex_lock(&client->hwctx_lock);
> > > + idr_for_each_entry_continue(&client->hwctx_idr, hwctx, next) {
> > > + /* check if the HW context uses the error column */
> > > + if (!(col_map & amdxdna_hwctx_col_map(hwctx)))
> > > + continue;
> > > +
> > > + aie2_hwctx_stop(xdna, hwctx, NULL);
> > > + hwctx->old_status = hwctx->status;
> > > + hwctx->status = HWCTX_STAT_STOP;
> > > + XDNA_DBG(xdna, "Stop %s", hwctx->name);
> > > + }
> > > + mutex_unlock(&client->hwctx_lock);
> > > +}
> > > +
> > > +void aie2_restart_ctx(struct amdxdna_client *client)
> > > +{
> > > + struct amdxdna_dev *xdna = client->xdna;
> > > + struct amdxdna_hwctx *hwctx;
> > > + int next = 0;
> > > +
> > > + drm_WARN_ON(&xdna->ddev, !mutex_is_locked(&xdna->dev_lock));
> > > + mutex_lock(&client->hwctx_lock);
> > > + idr_for_each_entry_continue(&client->hwctx_idr, hwctx, next) {
> > > + if (hwctx->status != HWCTX_STAT_STOP)
> > > + continue;
> > > +
> > > + hwctx->status = hwctx->old_status;
> > > + XDNA_DBG(xdna, "Resetting %s", hwctx->name);
> > > + aie2_hwctx_restart(xdna, hwctx);
> > > + }
> > > + mutex_unlock(&client->hwctx_lock);
> > > +}
> > > +
> > > +static int aie2_hwctx_wait_for_idle(struct amdxdna_hwctx *hwctx)
> > > +{
> > > + struct amdxdna_sched_job *job;
> > > +
> > > + mutex_lock(&hwctx->priv->io_lock);
> > > + if (!hwctx->priv->seq) {
> > > + mutex_unlock(&hwctx->priv->io_lock);
> > > + return 0;
> > > + }
> > > +
> > > + job = aie2_hwctx_get_job(hwctx, hwctx->priv->seq - 1);
> > > + if (IS_ERR_OR_NULL(job)) {
> > > + mutex_unlock(&hwctx->priv->io_lock);
> > > + XDNA_WARN(hwctx->client->xdna, "Corrupted pending list");
> > > + return 0;
> > > + }
> > > + mutex_unlock(&hwctx->priv->io_lock);
> > > +
> > > + wait_event(hwctx->priv->job_free_wq, !job->fence);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static void
> > > +aie2_sched_notify(struct amdxdna_sched_job *job)
> > > +{
> > > + struct dma_fence *fence = job->fence;
> > > +
> > > + job->hwctx->priv->completed++;
> > > + dma_fence_signal(fence);
> > > + trace_xdna_job(&job->base, job->hwctx->name, "signaled fence", job->seq);
> > > + dma_fence_put(fence);
> > > + mmput(job->mm);
> > > + amdxdna_job_put(job);
> > > +}
> > > +
> > > +static int
> > > +aie2_sched_resp_handler(void *handle, const u32 *data, size_t size)
> > > +{
> > > + struct amdxdna_sched_job *job = handle;
> > > + struct amdxdna_gem_obj *cmd_abo;
> > > + u32 ret = 0;
> > > + u32 status;
> > > +
> > > + cmd_abo = job->cmd_bo;
> > > +
> > > + if (unlikely(!data))
> > > + goto out;
> > > +
> > > + if (unlikely(size != sizeof(u32))) {
> > > + amdxdna_cmd_set_state(cmd_abo, ERT_CMD_STATE_ABORT);
> > > + ret = -EINVAL;
> > > + goto out;
> > > + }
> > > +
> > > + status = *data;
> > > + XDNA_DBG(job->hwctx->client->xdna, "Resp status 0x%x", status);
> > > + if (status == AIE2_STATUS_SUCCESS)
> > > + amdxdna_cmd_set_state(cmd_abo, ERT_CMD_STATE_COMPLETED);
> > > + else
> > > + amdxdna_cmd_set_state(cmd_abo, ERT_CMD_STATE_ERROR);
> > > +
> > > +out:
> > > + aie2_sched_notify(job);
> > > + return ret;
> > > +}
> > > +
> > > +static int
> > > +aie2_sched_nocmd_resp_handler(void *handle, const u32 *data, size_t size)
> > > +{
> > > + struct amdxdna_sched_job *job = handle;
> > > + u32 ret = 0;
> > > + u32 status;
> > > +
> > > + if (unlikely(!data))
> > > + goto out;
> > > +
> > > + if (unlikely(size != sizeof(u32))) {
> > > + ret = -EINVAL;
> > > + goto out;
> > > + }
> > > +
> > > + status = *data;
> > > + XDNA_DBG(job->hwctx->client->xdna, "Resp status 0x%x", status);
> > > +
> > > +out:
> > > + aie2_sched_notify(job);
> > > + return ret;
> > > +}
> > > +
> > > +static int
> > > +aie2_sched_cmdlist_resp_handler(void *handle, const u32 *data, size_t size)
> > > +{
> > > + struct amdxdna_sched_job *job = handle;
> > > + struct amdxdna_gem_obj *cmd_abo;
> > > + struct cmd_chain_resp *resp;
> > > + struct amdxdna_dev *xdna;
> > > + u32 fail_cmd_status;
> > > + u32 fail_cmd_idx;
> > > + u32 ret = 0;
> > > +
> > > + cmd_abo = job->cmd_bo;
> > > + if (unlikely(!data) || unlikely(size != sizeof(u32) * 3)) {
> > > + amdxdna_cmd_set_state(cmd_abo, ERT_CMD_STATE_ABORT);
> > > + ret = -EINVAL;
> > > + goto out;
> > > + }
> > > +
> > > + resp = (struct cmd_chain_resp *)data;
> > > + xdna = job->hwctx->client->xdna;
> > > + XDNA_DBG(xdna, "Status 0x%x", resp->status);
> > > + if (resp->status == AIE2_STATUS_SUCCESS) {
> > > + amdxdna_cmd_set_state(cmd_abo, ERT_CMD_STATE_COMPLETED);
> > > + goto out;
> > > + }
> > > +
> > > + /* Slow path to handle error, read from ringbuf on BAR */
> > > + fail_cmd_idx = resp->fail_cmd_idx;
> > > + fail_cmd_status = resp->fail_cmd_status;
> > > + XDNA_DBG(xdna, "Failed cmd idx %d, status 0x%x",
> > > + fail_cmd_idx, fail_cmd_status);
> > > +
> > > + if (fail_cmd_status == AIE2_STATUS_SUCCESS) {
> > > + amdxdna_cmd_set_state(cmd_abo, ERT_CMD_STATE_ABORT);
> > > + ret = -EINVAL;
> > > + goto out;
> > > + }
> > > + amdxdna_cmd_set_state(cmd_abo, fail_cmd_status);
> > > +
> > > + if (amdxdna_cmd_get_op(cmd_abo) == ERT_CMD_CHAIN) {
> > > + struct amdxdna_cmd_chain *cc = amdxdna_cmd_get_payload(cmd_abo, NULL);
> > > +
> > > + cc->error_index = fail_cmd_idx;
> > > + if (cc->error_index >= cc->command_count)
> > > + cc->error_index = 0;
> > > + }
> > > +out:
> > > + aie2_sched_notify(job);
> > > + return ret;
> > > +}
> > > +
> > > +static struct dma_fence *
> > > +aie2_sched_job_run(struct drm_sched_job *sched_job)
> > > +{
> > > + struct amdxdna_sched_job *job = drm_job_to_xdna_job(sched_job);
> > > + struct amdxdna_gem_obj *cmd_abo = job->cmd_bo;
> > > + struct amdxdna_hwctx *hwctx = job->hwctx;
> > > + struct dma_fence *fence;
> > > + int ret;
> > > +
> > > + if (!mmget_not_zero(job->mm))
> > > + return ERR_PTR(-ESRCH);
> > > +
> > > + kref_get(&job->refcnt);
> > > + fence = dma_fence_get(job->fence);
> > > +
> > > + if (unlikely(!cmd_abo)) {
> > > + ret = aie2_sync_bo(hwctx, job, aie2_sched_nocmd_resp_handler);
> > > + goto out;
> > > + }
> > > +
> > > + amdxdna_cmd_set_state(cmd_abo, ERT_CMD_STATE_NEW);
> > > +
> > > + if (amdxdna_cmd_get_op(cmd_abo) == ERT_CMD_CHAIN)
> > > + ret = aie2_cmdlist_multi_execbuf(hwctx, job, aie2_sched_cmdlist_resp_handler);
> > > + else if (force_cmdlist)
> > > + ret = aie2_cmdlist_single_execbuf(hwctx, job, aie2_sched_cmdlist_resp_handler);
> > > + else
> > > + ret = aie2_execbuf(hwctx, job, aie2_sched_resp_handler);
> > > +
> > > +out:
> > > + if (ret) {
> > > + dma_fence_put(job->fence);
> > > + amdxdna_job_put(job);
> > > + mmput(job->mm);
> > > + fence = ERR_PTR(ret);
> > > + }
> > > + trace_xdna_job(sched_job, hwctx->name, "sent to device", job->seq);
> > > +
> > > + return fence;
> > > +}
> > > +
> > > +static void aie2_sched_job_free(struct drm_sched_job *sched_job)
> > > +{
> > > + struct amdxdna_sched_job *job = drm_job_to_xdna_job(sched_job);
> > > + struct amdxdna_hwctx *hwctx = job->hwctx;
> > > +
> > > + trace_xdna_job(sched_job, hwctx->name, "job free", job->seq);
> > > + drm_sched_job_cleanup(sched_job);
> > > + job->fence = NULL;
> > > + amdxdna_job_put(job);
> > > +
> > > + wake_up(&hwctx->priv->job_free_wq);
> > > +}
> > > +
> > > +static enum drm_gpu_sched_stat
> > > +aie2_sched_job_timedout(struct drm_sched_job *sched_job)
> > > +{
> > > + struct amdxdna_sched_job *job = drm_job_to_xdna_job(sched_job);
> > > + struct amdxdna_hwctx *hwctx = job->hwctx;
> > > + struct amdxdna_dev *xdna;
> > > +
> > > + xdna = hwctx->client->xdna;
> > > + trace_xdna_job(sched_job, hwctx->name, "job timedout", job->seq);
> > > + mutex_lock(&xdna->dev_lock);
> > > + aie2_hwctx_stop(xdna, hwctx, sched_job);
> > > +
> > > + aie2_hwctx_restart(xdna, hwctx);
> > > + mutex_unlock(&xdna->dev_lock);
> > > +
> > > + return DRM_GPU_SCHED_STAT_NOMINAL;
> > > +}
> > > +
> > > +const struct drm_sched_backend_ops sched_ops = {
> > > + .run_job = aie2_sched_job_run,
> > > + .free_job = aie2_sched_job_free,
> > > + .timedout_job = aie2_sched_job_timedout,
> > > +};
> > > +
> > > static int aie2_hwctx_col_list(struct amdxdna_hwctx *hwctx)
> > > {
> > > struct amdxdna_dev *xdna = hwctx->client->xdna;
> > > @@ -130,9 +488,10 @@ int aie2_hwctx_init(struct amdxdna_hwctx *hwctx)
> > > {
> > > struct amdxdna_client *client = hwctx->client;
> > > struct amdxdna_dev *xdna = client->xdna;
> > > + struct drm_gpu_scheduler *sched;
> > > struct amdxdna_hwctx_priv *priv;
> > > struct amdxdna_gem_obj *heap;
> > > - int ret;
> > > + int i, ret;
> > > priv = kzalloc(sizeof(*hwctx->priv), GFP_KERNEL);
> > > if (!priv)
> > > @@ -157,10 +516,48 @@ int aie2_hwctx_init(struct amdxdna_hwctx *hwctx)
> > > goto put_heap;
> > > }
> > > + for (i = 0; i < ARRAY_SIZE(priv->cmd_buf); i++) {
> > > + struct amdxdna_gem_obj *abo;
> > > + struct amdxdna_drm_create_bo args = {
> > > + .flags = 0,
> > > + .type = AMDXDNA_BO_DEV,
> > > + .vaddr = 0,
> > > + .size = MAX_CHAIN_CMDBUF_SIZE,
> > > + };
> > > +
> > > + abo = amdxdna_drm_alloc_dev_bo(&xdna->ddev, &args, client->filp, true);
> > > + if (IS_ERR(abo)) {
> > > + ret = PTR_ERR(abo);
> > > + goto free_cmd_bufs;
> > > + }
> > > +
> > > + XDNA_DBG(xdna, "Command buf %d addr 0x%llx size 0x%lx",
> > > + i, abo->mem.dev_addr, abo->mem.size);
> > > + priv->cmd_buf[i] = abo;
> > > + }
> > > +
> > > + sched = &priv->sched;
> > > + mutex_init(&priv->io_lock);
> > > + ret = drm_sched_init(sched, &sched_ops, NULL, DRM_SCHED_PRIORITY_COUNT,
> > > + HWCTX_MAX_CMDS, 0, msecs_to_jiffies(HWCTX_MAX_TIMEOUT),
> > > + NULL, NULL, hwctx->name, xdna->ddev.dev);
> > > + if (ret) {
> > > + XDNA_ERR(xdna, "Failed to init DRM scheduler. ret %d", ret);
> > > + goto free_cmd_bufs;
> > > + }
> > > +
> > > + ret = drm_sched_entity_init(&priv->entity, DRM_SCHED_PRIORITY_NORMAL,
> > > + &sched, 1, NULL);
> > > + if (ret) {
> > > + XDNA_ERR(xdna, "Failed to initial sched entiry. ret %d", ret);
> > > + goto free_sched;
> > > + }
> > > + init_waitqueue_head(&priv->job_free_wq);
> > > +
> > > ret = aie2_hwctx_col_list(hwctx);
> > > if (ret) {
> > > XDNA_ERR(xdna, "Create col list failed, ret %d", ret);
> > > - goto unpin;
> > > + goto free_entity;
> > > }
> > > ret = aie2_alloc_resource(hwctx);
> > > @@ -185,7 +582,16 @@ int aie2_hwctx_init(struct amdxdna_hwctx *hwctx)
> > > aie2_release_resource(hwctx);
> > > free_col_list:
> > > kfree(hwctx->col_list);
> > > -unpin:
> > > +free_entity:
> > > + drm_sched_entity_destroy(&priv->entity);
> > > +free_sched:
> > > + drm_sched_fini(&priv->sched);
> > > +free_cmd_bufs:
> > > + for (i = 0; i < ARRAY_SIZE(priv->cmd_buf); i++) {
> > > + if (!priv->cmd_buf[i])
> > > + continue;
> > > + drm_gem_object_put(to_gobj(priv->cmd_buf[i]));
> > > + }
> > > amdxdna_gem_unpin(heap);
> > > put_heap:
> > > drm_gem_object_put(to_gobj(heap));
> > > @@ -196,11 +602,43 @@ int aie2_hwctx_init(struct amdxdna_hwctx *hwctx)
> > > void aie2_hwctx_fini(struct amdxdna_hwctx *hwctx)
> > > {
> > > + struct amdxdna_sched_job *job;
> > > + struct amdxdna_dev *xdna;
> > > + int idx;
> > > +
> > > + xdna = hwctx->client->xdna;
> > > + drm_sched_wqueue_stop(&hwctx->priv->sched);
> > > +
> > > + /* Now, scheduler will not send command to device. */
> > > aie2_release_resource(hwctx);
> > > + /*
> > > + * All submitted commands are aborted.
> > > + * Restart scheduler queues to cleanup jobs. The amdxdna_sched_job_run()
> > > + * will return NODEV if it is called.
> > > + */
> > > + drm_sched_wqueue_start(&hwctx->priv->sched);
> > > +
> > > + aie2_hwctx_wait_for_idle(hwctx);
> > > + drm_sched_entity_destroy(&hwctx->priv->entity);
> > > + drm_sched_fini(&hwctx->priv->sched);
> > > +
> > > + for (idx = 0; idx < HWCTX_MAX_CMDS; idx++) {
> > > + job = hwctx->priv->pending[idx];
> > > + if (!job)
> > > + continue;
> > > +
> > > + dma_fence_put(job->out_fence);
> > > + amdxdna_job_put(job);
> > > + }
> > > + XDNA_DBG(xdna, "%s sequence number %lld", hwctx->name, hwctx->priv->seq);
> > > +
> > > + for (idx = 0; idx < ARRAY_SIZE(hwctx->priv->cmd_buf); idx++)
> > > + drm_gem_object_put(to_gobj(hwctx->priv->cmd_buf[idx]));
> > > amdxdna_gem_unpin(hwctx->priv->heap);
> > > drm_gem_object_put(to_gobj(hwctx->priv->heap));
> > > + mutex_destroy(&hwctx->priv->io_lock);
> > > kfree(hwctx->col_list);
> > > kfree(hwctx->priv);
> > > kfree(hwctx->cus);
> > > @@ -267,3 +705,183 @@ int aie2_hwctx_config(struct amdxdna_hwctx *hwctx, u32 type, u64 value, void *bu
> > > return -EOPNOTSUPP;
> > > }
> > > }
> > > +
> > > +static int aie2_populate_range(struct amdxdna_gem_obj *abo)
> > > +{
> > > + struct amdxdna_dev *xdna = to_xdna_dev(to_gobj(abo)->dev);
> > > + struct mm_struct *mm = abo->mem.notifier.mm;
> > > + struct hmm_range range = { 0 };
> > > + unsigned long timeout;
> > > + int ret;
> > > +
> > > + XDNA_INFO_ONCE(xdna, "populate memory range %llx size %lx",
> > > + abo->mem.userptr, abo->mem.size);
> > > + range.notifier = &abo->mem.notifier;
> > > + range.start = abo->mem.userptr;
> > > + range.end = abo->mem.userptr + abo->mem.size;
> > > + range.hmm_pfns = abo->mem.pfns;
> > > + range.default_flags = HMM_PFN_REQ_FAULT;
> > > +
> > > + if (!mmget_not_zero(mm))
> > > + return -EFAULT;
> > > +
> > > + timeout = jiffies + msecs_to_jiffies(HMM_RANGE_DEFAULT_TIMEOUT);
> > > +again:
> > > + range.notifier_seq = mmu_interval_read_begin(&abo->mem.notifier);
> > > + mmap_read_lock(mm);
> > > + ret = hmm_range_fault(&range);
> > > + mmap_read_unlock(mm);
> > > + if (ret) {
> > > + if (time_after(jiffies, timeout)) {
> > > + ret = -ETIME;
> > > + goto put_mm;
> > > + }
> > > +
> > > + if (ret == -EBUSY)
> > > + goto again;
> > > +
> > > + goto put_mm;
> > > + }
> > > +
> > > + dma_resv_lock(to_gobj(abo)->resv, NULL);
> > > + if (mmu_interval_read_retry(&abo->mem.notifier, range.notifier_seq)) {
> > > + dma_resv_unlock(to_gobj(abo)->resv);
> > > + goto again;
> > > + }
> > > + abo->mem.map_invalid = false;
> > > + dma_resv_unlock(to_gobj(abo)->resv);
> > > +
> > > +put_mm:
> > > + mmput(mm);
> > > + return ret;
> > > +}
> > > +
> > > +int aie2_cmd_submit(struct amdxdna_hwctx *hwctx, struct amdxdna_sched_job *job, u64 *seq)
> > > +{
> > > + struct amdxdna_dev *xdna = hwctx->client->xdna;
> > > + struct ww_acquire_ctx acquire_ctx;
> > > + struct amdxdna_gem_obj *abo;
> > > + unsigned long timeout = 0;
> > > + int ret, i;
> > > +
> > > + ret = drm_sched_job_init(&job->base, &hwctx->priv->entity, 1, hwctx);
> > > + if (ret) {
> > > + XDNA_ERR(xdna, "DRM job init failed, ret %d", ret);
> > > + return ret;
> > > + }
> > > +
> > > + drm_sched_job_arm(&job->base);
> > > + job->out_fence = dma_fence_get(&job->base.s_fence->finished);
> > > +
> > > +retry:
> > > + ret = drm_gem_lock_reservations(job->bos, job->bo_cnt, &acquire_ctx);
> > > + if (ret) {
> > > + XDNA_WARN(xdna, "Failed to reverve fence, ret %d", ret);
> > > + goto put_fence;
> > > + }
> > > +
> > > + for (i = 0; i < job->bo_cnt; i++) {
> > > + abo = to_xdna_obj(job->bos[i]);
> > > + if (abo->mem.map_invalid) {
> > > + drm_gem_unlock_reservations(job->bos, job->bo_cnt, &acquire_ctx);
> > > + if (!timeout) {
> > > + timeout = jiffies +
> > > + msecs_to_jiffies(HMM_RANGE_DEFAULT_TIMEOUT);
> > > + } else if (time_after(jiffies, timeout)) {
> > > + ret = -ETIME;
> > > + goto put_fence;
> > > + }
> > > +
> > > + ret = aie2_populate_range(abo);
> > > + if (ret)
> > > + goto put_fence;
> > > + goto retry;
> > > + }
> > > +
> > > + ret = dma_resv_reserve_fences(job->bos[i]->resv, 1);
> > > + if (ret) {
> > > + XDNA_WARN(xdna, "Failed to reserve fences %d", ret);
> > > + drm_gem_unlock_reservations(job->bos, job->bo_cnt, &acquire_ctx);
> > > + goto put_fence;
> > > + }
> > > + }
> > > +
> > > + for (i = 0; i < job->bo_cnt; i++)
> > > + dma_resv_add_fence(job->bos[i]->resv, job->out_fence, DMA_RESV_USAGE_WRITE);
> > > + drm_gem_unlock_reservations(job->bos, job->bo_cnt, &acquire_ctx);
> > > +
> > > + mutex_lock(&hwctx->priv->io_lock);
> > > + ret = aie2_hwctx_add_job(hwctx, job);
> > > + if (ret) {
> > > + mutex_unlock(&hwctx->priv->io_lock);
> > > + goto signal_fence;
> > > + }
> > > +
> > > + *seq = job->seq;
> > > + drm_sched_entity_push_job(&job->base);
> > > + mutex_unlock(&hwctx->priv->io_lock);
> > > +
> > > + return 0;
> > > +
> > > +signal_fence:
> > > + dma_fence_signal(job->out_fence);
> > > +put_fence:
> > > + dma_fence_put(job->out_fence);
> > > + drm_sched_job_cleanup(&job->base);
> > > + return ret;
> > > +}
> > > +
> > > +int aie2_cmd_wait(struct amdxdna_hwctx *hwctx, u64 seq, u32 timeout)
> > > +{
> > > + signed long remaining = MAX_SCHEDULE_TIMEOUT;
> > > + struct amdxdna_sched_job *job;
> > > + struct dma_fence *out_fence;
> > > + long ret;
> > > +
> > > + mutex_lock(&hwctx->priv->io_lock);
> > > + job = aie2_hwctx_get_job(hwctx, seq);
> > > + if (IS_ERR(job)) {
> > > + mutex_unlock(&hwctx->priv->io_lock);
> > > + ret = PTR_ERR(job);
> > > + goto out;
> > > + }
> > > +
> > > + if (unlikely(!job)) {
> > > + mutex_unlock(&hwctx->priv->io_lock);
> > > + ret = 0;
> > > + goto out;
> > > + }
> > > + out_fence = dma_fence_get(job->out_fence);
> > > + mutex_unlock(&hwctx->priv->io_lock);
> > > +
> > > + if (timeout)
> > > + remaining = msecs_to_jiffies(timeout);
> > > +
> > > + ret = dma_fence_wait_timeout(out_fence, true, remaining);
> > > + if (!ret)
> > > + ret = -ETIME;
> > > + else if (ret > 0)
> > > + ret = 0;
> > > +
> > > + dma_fence_put(out_fence);
> > > +out:
> > > + return ret;
> > > +}
> > > +
> > > +void aie2_hmm_invalidate(struct amdxdna_gem_obj *abo,
> > > + unsigned long cur_seq)
> > > +{
> > > + struct amdxdna_dev *xdna = to_xdna_dev(to_gobj(abo)->dev);
> > > + struct drm_gem_object *gobj = to_gobj(abo);
> > > + long ret;
> > > +
> > > + dma_resv_lock(gobj->resv, NULL);
> > Was randomly looking as I was interested - drive by comment...
> >
> > I think you have a locking inversion here.
> >
> > MMU notifiers are in the path of reclaim (Can't allocate memory),
> > dma-resv lock can allocate memory while being held, thus you can
> > deadlock.
>
> Thanks for point this out, I will use a mutex lock instead.
>
No problem, this locking is pretty easy to get wrong. I also suggest
priming your mutex with reclaim too to catch bug early that only pop
after your notifier fires.
e.g.
fs_reclaim_acquire(GFP_KERNEL);
might_lock(your notifier mutex);
fs_reclaim_release(GFP_KERNEL);
Matt
>
> Lizhi
>
> >
> > Lockdep should blow up here. See [1] [2].
> >
> > [1] https://elixir.bootlin.com/linux/v6.11.3/source/mm/page_alloc.c#L3833
> > [2] https://elixir.bootlin.com/linux/v6.11.3/source/drivers/dma-buf/dma-resv.c#L773
> >
> > Matt
> >
> > > + abo->mem.map_invalid = true;
> > > + mmu_interval_set_seq(&abo->mem.notifier, cur_seq);
> > > + ret = dma_resv_wait_timeout(gobj->resv, DMA_RESV_USAGE_BOOKKEEP,
> > > + true, MAX_SCHEDULE_TIMEOUT);
> > > + dma_resv_unlock(gobj->resv);
> > > +
> > > + if (!ret || ret == -ERESTARTSYS)
> > > + XDNA_ERR(xdna, "Failed to wait for bo, ret %ld", ret);
> > > +}
> > > diff --git a/drivers/accel/amdxdna/aie2_message.c b/drivers/accel/amdxdna/aie2_message.c
> > > index 28bd0560db61..3dc4a9a8571e 100644
> > > --- a/drivers/accel/amdxdna/aie2_message.c
> > > +++ b/drivers/accel/amdxdna/aie2_message.c
> > > @@ -4,10 +4,12 @@
> > > */
> > > #include <drm/amdxdna_accel.h>
> > > +#include <drm/drm_cache.h>
> > > #include <drm/drm_device.h>
> > > #include <drm/drm_gem.h>
> > > #include <drm/drm_gem_shmem_helper.h>
> > > #include <drm/drm_print.h>
> > > +#include <drm/gpu_scheduler.h>
> > > #include <linux/errno.h>
> > > #include <linux/pci.h>
> > > #include <linux/types.h>
> > > @@ -361,3 +363,344 @@ int aie2_config_cu(struct amdxdna_hwctx *hwctx)
> > > msg.opcode, resp.status, ret);
> > > return ret;
> > > }
> > > +
> > > +int aie2_execbuf(struct amdxdna_hwctx *hwctx, struct amdxdna_sched_job *job,
> > > + int (*notify_cb)(void *, const u32 *, size_t))
> > > +{
> > > + struct mailbox_channel *chann = hwctx->priv->mbox_chann;
> > > + struct amdxdna_dev *xdna = hwctx->client->xdna;
> > > + struct amdxdna_gem_obj *cmd_abo = job->cmd_bo;
> > > + union {
> > > + struct execute_buffer_req ebuf;
> > > + struct exec_dpu_req dpu;
> > > + } req;
> > > + struct xdna_mailbox_msg msg;
> > > + u32 payload_len;
> > > + void *payload;
> > > + int cu_idx;
> > > + int ret;
> > > + u32 op;
> > > +
> > > + if (!chann)
> > > + return -ENODEV;
> > > +
> > > + payload = amdxdna_cmd_get_payload(cmd_abo, &payload_len);
> > > + if (!payload) {
> > > + XDNA_ERR(xdna, "Invalid command, cannot get payload");
> > > + return -EINVAL;
> > > + }
> > > +
> > > + cu_idx = amdxdna_cmd_get_cu_idx(cmd_abo);
> > > + if (cu_idx < 0) {
> > > + XDNA_DBG(xdna, "Invalid cu idx");
> > > + return -EINVAL;
> > > + }
> > > +
> > > + op = amdxdna_cmd_get_op(cmd_abo);
> > > + switch (op) {
> > > + case ERT_START_CU:
> > > + if (unlikely(payload_len > sizeof(req.ebuf.payload)))
> > > + XDNA_DBG(xdna, "Invalid ebuf payload len: %d", payload_len);
> > > + req.ebuf.cu_idx = cu_idx;
> > > + memcpy(req.ebuf.payload, payload, sizeof(req.ebuf.payload));
> > > + msg.send_size = sizeof(req.ebuf);
> > > + msg.opcode = MSG_OP_EXECUTE_BUFFER_CF;
> > > + break;
> > > + case ERT_START_NPU: {
> > > + struct amdxdna_cmd_start_npu *sn = payload;
> > > +
> > > + if (unlikely(payload_len - sizeof(*sn) > sizeof(req.dpu.payload)))
> > > + XDNA_DBG(xdna, "Invalid dpu payload len: %d", payload_len);
> > > + req.dpu.inst_buf_addr = sn->buffer;
> > > + req.dpu.inst_size = sn->buffer_size;
> > > + req.dpu.inst_prop_cnt = sn->prop_count;
> > > + req.dpu.cu_idx = cu_idx;
> > > + memcpy(req.dpu.payload, sn->prop_args, sizeof(req.dpu.payload));
> > > + msg.send_size = sizeof(req.dpu);
> > > + msg.opcode = MSG_OP_EXEC_DPU;
> > > + break;
> > > + }
> > > + default:
> > > + XDNA_DBG(xdna, "Invalid ERT cmd op code: %d", op);
> > > + return -EINVAL;
> > > + }
> > > + msg.handle = job;
> > > + msg.notify_cb = notify_cb;
> > > + msg.send_data = (u8 *)&req;
> > > + print_hex_dump_debug("cmd: ", DUMP_PREFIX_OFFSET, 16, 4, &req,
> > > + 0x40, false);
> > > +
> > > + ret = xdna_mailbox_send_msg(chann, &msg, TX_TIMEOUT);
> > > + if (ret) {
> > > + XDNA_ERR(xdna, "Send message failed");
> > > + return ret;
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static int
> > > +aie2_cmdlist_fill_one_slot_cf(void *cmd_buf, u32 offset,
> > > + struct amdxdna_gem_obj *abo, u32 *size)
> > > +{
> > > + struct cmd_chain_slot_execbuf_cf *buf = cmd_buf + offset;
> > > + int cu_idx = amdxdna_cmd_get_cu_idx(abo);
> > > + u32 payload_len;
> > > + void *payload;
> > > +
> > > + if (cu_idx < 0)
> > > + return -EINVAL;
> > > +
> > > + payload = amdxdna_cmd_get_payload(abo, &payload_len);
> > > + if (!payload)
> > > + return -EINVAL;
> > > +
> > > + if (!slot_cf_has_space(offset, payload_len))
> > > + return -ENOSPC;
> > > +
> > > + buf->cu_idx = cu_idx;
> > > + buf->arg_cnt = payload_len / sizeof(u32);
> > > + memcpy(buf->args, payload, payload_len);
> > > + /* Accurate buf size to hint firmware to do necessary copy */
> > > + *size = sizeof(*buf) + payload_len;
> > > + return 0;
> > > +}
> > > +
> > > +static int
> > > +aie2_cmdlist_fill_one_slot_dpu(void *cmd_buf, u32 offset,
> > > + struct amdxdna_gem_obj *abo, u32 *size)
> > > +{
> > > + struct cmd_chain_slot_dpu *buf = cmd_buf + offset;
> > > + int cu_idx = amdxdna_cmd_get_cu_idx(abo);
> > > + struct amdxdna_cmd_start_npu *sn;
> > > + u32 payload_len;
> > > + void *payload;
> > > + u32 arg_sz;
> > > +
> > > + if (cu_idx < 0)
> > > + return -EINVAL;
> > > +
> > > + payload = amdxdna_cmd_get_payload(abo, &payload_len);
> > > + if (!payload)
> > > + return -EINVAL;
> > > + sn = payload;
> > > + arg_sz = payload_len - sizeof(*sn);
> > > + if (payload_len < sizeof(*sn) || arg_sz > MAX_DPU_ARGS_SIZE)
> > > + return -EINVAL;
> > > +
> > > + if (!slot_dpu_has_space(offset, arg_sz))
> > > + return -ENOSPC;
> > > +
> > > + buf->inst_buf_addr = sn->buffer;
> > > + buf->inst_size = sn->buffer_size;
> > > + buf->inst_prop_cnt = sn->prop_count;
> > > + buf->cu_idx = cu_idx;
> > > + buf->arg_cnt = arg_sz / sizeof(u32);
> > > + memcpy(buf->args, sn->prop_args, arg_sz);
> > > +
> > > + /* Accurate buf size to hint firmware to do necessary copy */
> > > + *size += sizeof(*buf) + arg_sz;
> > > + return 0;
> > > +}
> > > +
> > > +static int
> > > +aie2_cmdlist_fill_one_slot(u32 op, struct amdxdna_gem_obj *cmdbuf_abo, u32 offset,
> > > + struct amdxdna_gem_obj *abo, u32 *size)
> > > +{
> > > + u32 this_op = amdxdna_cmd_get_op(abo);
> > > + void *cmd_buf = cmdbuf_abo->mem.kva;
> > > + int ret;
> > > +
> > > + if (this_op != op) {
> > > + ret = -EINVAL;
> > > + goto done;
> > > + }
> > > +
> > > + switch (op) {
> > > + case ERT_START_CU:
> > > + ret = aie2_cmdlist_fill_one_slot_cf(cmd_buf, offset, abo, size);
> > > + break;
> > > + case ERT_START_NPU:
> > > + ret = aie2_cmdlist_fill_one_slot_dpu(cmd_buf, offset, abo, size);
> > > + break;
> > > + default:
> > > + ret = -EOPNOTSUPP;
> > > + }
> > > +
> > > +done:
> > > + if (ret) {
> > > + XDNA_ERR(abo->client->xdna, "Can't fill slot for cmd op %d ret %d",
> > > + op, ret);
> > > + }
> > > + return ret;
> > > +}
> > > +
> > > +static inline struct amdxdna_gem_obj *
> > > +aie2_cmdlist_get_cmd_buf(struct amdxdna_sched_job *job)
> > > +{
> > > + int idx = get_job_idx(job->seq);
> > > +
> > > + return job->hwctx->priv->cmd_buf[idx];
> > > +}
> > > +
> > > +static void
> > > +aie2_cmdlist_prepare_request(struct cmd_chain_req *req,
> > > + struct amdxdna_gem_obj *cmdbuf_abo, u32 size, u32 cnt)
> > > +{
> > > + req->buf_addr = cmdbuf_abo->mem.dev_addr;
> > > + req->buf_size = size;
> > > + req->count = cnt;
> > > + drm_clflush_virt_range(cmdbuf_abo->mem.kva, size);
> > > + XDNA_DBG(cmdbuf_abo->client->xdna, "Command buf addr 0x%llx size 0x%x count %d",
> > > + req->buf_addr, size, cnt);
> > > +}
> > > +
> > > +static inline u32
> > > +aie2_cmd_op_to_msg_op(u32 op)
> > > +{
> > > + switch (op) {
> > > + case ERT_START_CU:
> > > + return MSG_OP_CHAIN_EXEC_BUFFER_CF;
> > > + case ERT_START_NPU:
> > > + return MSG_OP_CHAIN_EXEC_DPU;
> > > + default:
> > > + return MSG_OP_MAX_OPCODE;
> > > + }
> > > +}
> > > +
> > > +int aie2_cmdlist_multi_execbuf(struct amdxdna_hwctx *hwctx,
> > > + struct amdxdna_sched_job *job,
> > > + int (*notify_cb)(void *, const u32 *, size_t))
> > > +{
> > > + struct amdxdna_gem_obj *cmdbuf_abo = aie2_cmdlist_get_cmd_buf(job);
> > > + struct mailbox_channel *chann = hwctx->priv->mbox_chann;
> > > + struct amdxdna_client *client = hwctx->client;
> > > + struct amdxdna_gem_obj *cmd_abo = job->cmd_bo;
> > > + struct amdxdna_cmd_chain *payload;
> > > + struct xdna_mailbox_msg msg;
> > > + struct cmd_chain_req req;
> > > + u32 payload_len;
> > > + u32 offset = 0;
> > > + u32 size;
> > > + int ret;
> > > + u32 op;
> > > + u32 i;
> > > +
> > > + op = amdxdna_cmd_get_op(cmd_abo);
> > > + payload = amdxdna_cmd_get_payload(cmd_abo, &payload_len);
> > > + if (op != ERT_CMD_CHAIN || !payload ||
> > > + payload_len < struct_size(payload, data, payload->command_count))
> > > + return -EINVAL;
> > > +
> > > + for (i = 0; i < payload->command_count; i++) {
> > > + u32 boh = (u32)(payload->data[i]);
> > > + struct amdxdna_gem_obj *abo;
> > > +
> > > + abo = amdxdna_gem_get_obj(client, boh, AMDXDNA_BO_CMD);
> > > + if (!abo) {
> > > + XDNA_ERR(client->xdna, "Failed to find cmd BO %d", boh);
> > > + return -ENOENT;
> > > + }
> > > +
> > > + /* All sub-cmd should have same op, use the first one. */
> > > + if (i == 0)
> > > + op = amdxdna_cmd_get_op(abo);
> > > +
> > > + ret = aie2_cmdlist_fill_one_slot(op, cmdbuf_abo, offset, abo, &size);
> > > + amdxdna_gem_put_obj(abo);
> > > + if (ret)
> > > + return -EINVAL;
> > > +
> > > + offset += size;
> > > + }
> > > +
> > > + /* The offset is the accumulated total size of the cmd buffer */
> > > + aie2_cmdlist_prepare_request(&req, cmdbuf_abo, offset, payload->command_count);
> > > +
> > > + msg.opcode = aie2_cmd_op_to_msg_op(op);
> > > + if (msg.opcode == MSG_OP_MAX_OPCODE)
> > > + return -EOPNOTSUPP;
> > > + msg.handle = job;
> > > + msg.notify_cb = notify_cb;
> > > + msg.send_data = (u8 *)&req;
> > > + msg.send_size = sizeof(req);
> > > + ret = xdna_mailbox_send_msg(chann, &msg, TX_TIMEOUT);
> > > + if (ret) {
> > > + XDNA_ERR(hwctx->client->xdna, "Send message failed");
> > > + return ret;
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +int aie2_cmdlist_single_execbuf(struct amdxdna_hwctx *hwctx,
> > > + struct amdxdna_sched_job *job,
> > > + int (*notify_cb)(void *, const u32 *, size_t))
> > > +{
> > > + struct amdxdna_gem_obj *cmdbuf_abo = aie2_cmdlist_get_cmd_buf(job);
> > > + struct mailbox_channel *chann = hwctx->priv->mbox_chann;
> > > + struct amdxdna_gem_obj *cmd_abo = job->cmd_bo;
> > > + struct xdna_mailbox_msg msg;
> > > + struct cmd_chain_req req;
> > > + u32 size;
> > > + int ret;
> > > + u32 op;
> > > +
> > > + op = amdxdna_cmd_get_op(cmd_abo);
> > > + ret = aie2_cmdlist_fill_one_slot(op, cmdbuf_abo, 0, cmd_abo, &size);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + aie2_cmdlist_prepare_request(&req, cmdbuf_abo, size, 1);
> > > +
> > > + msg.opcode = aie2_cmd_op_to_msg_op(op);
> > > + if (msg.opcode == MSG_OP_MAX_OPCODE)
> > > + return -EOPNOTSUPP;
> > > + msg.handle = job;
> > > + msg.notify_cb = notify_cb;
> > > + msg.send_data = (u8 *)&req;
> > > + msg.send_size = sizeof(req);
> > > + ret = xdna_mailbox_send_msg(chann, &msg, TX_TIMEOUT);
> > > + if (ret) {
> > > + XDNA_ERR(hwctx->client->xdna, "Send message failed");
> > > + return ret;
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +int aie2_sync_bo(struct amdxdna_hwctx *hwctx, struct amdxdna_sched_job *job,
> > > + int (*notify_cb)(void *, const u32 *, size_t))
> > > +{
> > > + struct mailbox_channel *chann = hwctx->priv->mbox_chann;
> > > + struct amdxdna_gem_obj *abo = to_xdna_obj(job->bos[0]);
> > > + struct amdxdna_dev *xdna = hwctx->client->xdna;
> > > + struct xdna_mailbox_msg msg;
> > > + struct sync_bo_req req;
> > > + int ret = 0;
> > > +
> > > + req.src_addr = 0;
> > > + req.dst_addr = abo->mem.dev_addr - hwctx->client->dev_heap->mem.dev_addr;
> > > + req.size = abo->mem.size;
> > > +
> > > + /* Device to Host */
> > > + req.type = FIELD_PREP(AIE2_MSG_SYNC_BO_SRC_TYPE, SYNC_BO_DEV_MEM) |
> > > + FIELD_PREP(AIE2_MSG_SYNC_BO_DST_TYPE, SYNC_BO_HOST_MEM);
> > > +
> > > + XDNA_DBG(xdna, "sync %d bytes src(0x%llx) to dst(0x%llx) completed",
> > > + req.size, req.src_addr, req.dst_addr);
> > > +
> > > + msg.handle = job;
> > > + msg.notify_cb = notify_cb;
> > > + msg.send_data = (u8 *)&req;
> > > + msg.send_size = sizeof(req);
> > > + msg.opcode = MSG_OP_SYNC_BO;
> > > +
> > > + ret = xdna_mailbox_send_msg(chann, &msg, TX_TIMEOUT);
> > > + if (ret) {
> > > + XDNA_ERR(xdna, "Send message failed");
> > > + return ret;
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > diff --git a/drivers/accel/amdxdna/aie2_pci.c b/drivers/accel/amdxdna/aie2_pci.c
> > > index ee9f114bc229..6017826a7104 100644
> > > --- a/drivers/accel/amdxdna/aie2_pci.c
> > > +++ b/drivers/accel/amdxdna/aie2_pci.c
> > > @@ -5,8 +5,10 @@
> > > #include <drm/amdxdna_accel.h>
> > > #include <drm/drm_device.h>
> > > +#include <drm/drm_gem_shmem_helper.h>
> > > #include <drm/drm_managed.h>
> > > #include <drm/drm_print.h>
> > > +#include <drm/gpu_scheduler.h>
> > > #include <linux/errno.h>
> > > #include <linux/firmware.h>
> > > #include <linux/iommu.h>
> > > @@ -17,6 +19,7 @@
> > > #include "aie2_pci.h"
> > > #include "aie2_solver.h"
> > > #include "amdxdna_ctx.h"
> > > +#include "amdxdna_gem.h"
> > > #include "amdxdna_mailbox.h"
> > > #include "amdxdna_pci_drv.h"
> > > @@ -499,4 +502,7 @@ const struct amdxdna_dev_ops aie2_ops = {
> > > .hwctx_init = aie2_hwctx_init,
> > > .hwctx_fini = aie2_hwctx_fini,
> > > .hwctx_config = aie2_hwctx_config,
> > > + .cmd_submit = aie2_cmd_submit,
> > > + .cmd_wait = aie2_cmd_wait,
> > > + .hmm_invalidate = aie2_hmm_invalidate,
> > > };
> > > diff --git a/drivers/accel/amdxdna/aie2_pci.h b/drivers/accel/amdxdna/aie2_pci.h
> > > index 3ac936e2c9d1..81877d9c0542 100644
> > > --- a/drivers/accel/amdxdna/aie2_pci.h
> > > +++ b/drivers/accel/amdxdna/aie2_pci.h
> > > @@ -76,6 +76,7 @@ enum psp_reg_idx {
> > > PSP_MAX_REGS /* Keep this at the end */
> > > };
> > > +struct amdxdna_client;
> > > struct amdxdna_fw_ver;
> > > struct amdxdna_hwctx;
> > > @@ -118,9 +119,28 @@ struct rt_config {
> > > u32 value;
> > > };
> > > +/*
> > > + * Define the maximum number of pending commands in a hardware context.
> > > + * Must be power of 2!
> > > + */
> > > +#define HWCTX_MAX_CMDS 4
> > > +#define get_job_idx(seq) ((seq) & (HWCTX_MAX_CMDS - 1))
> > > struct amdxdna_hwctx_priv {
> > > struct amdxdna_gem_obj *heap;
> > > void *mbox_chann;
> > > +
> > > + struct drm_gpu_scheduler sched;
> > > + struct drm_sched_entity entity;
> > > +
> > > + struct mutex io_lock; /* protect seq and cmd order */
> > > + struct wait_queue_head job_free_wq;
> > > + struct amdxdna_sched_job *pending[HWCTX_MAX_CMDS];
> > > + u32 num_pending;
> > > + u64 seq;
> > > + /* Completed job counter */
> > > + u64 completed;
> > > +
> > > + struct amdxdna_gem_obj *cmd_buf[HWCTX_MAX_CMDS];
> > > };
> > > struct amdxdna_dev_hdl {
> > > @@ -199,10 +219,25 @@ int aie2_create_context(struct amdxdna_dev_hdl *ndev, struct amdxdna_hwctx *hwct
> > > int aie2_destroy_context(struct amdxdna_dev_hdl *ndev, struct amdxdna_hwctx *hwctx);
> > > int aie2_map_host_buf(struct amdxdna_dev_hdl *ndev, u32 context_id, u64 addr, u64 size);
> > > int aie2_config_cu(struct amdxdna_hwctx *hwctx);
> > > +int aie2_execbuf(struct amdxdna_hwctx *hwctx, struct amdxdna_sched_job *job,
> > > + int (*notify_cb)(void *, const u32 *, size_t));
> > > +int aie2_cmdlist_single_execbuf(struct amdxdna_hwctx *hwctx,
> > > + struct amdxdna_sched_job *job,
> > > + int (*notify_cb)(void *, const u32 *, size_t));
> > > +int aie2_cmdlist_multi_execbuf(struct amdxdna_hwctx *hwctx,
> > > + struct amdxdna_sched_job *job,
> > > + int (*notify_cb)(void *, const u32 *, size_t));
> > > +int aie2_sync_bo(struct amdxdna_hwctx *hwctx, struct amdxdna_sched_job *job,
> > > + int (*notify_cb)(void *, const u32 *, size_t));
> > > /* aie2_hwctx.c */
> > > int aie2_hwctx_init(struct amdxdna_hwctx *hwctx);
> > > void aie2_hwctx_fini(struct amdxdna_hwctx *hwctx);
> > > int aie2_hwctx_config(struct amdxdna_hwctx *hwctx, u32 type, u64 value, void *buf, u32 size);
> > > +int aie2_cmd_submit(struct amdxdna_hwctx *hwctx, struct amdxdna_sched_job *job, u64 *seq);
> > > +int aie2_cmd_wait(struct amdxdna_hwctx *hwctx, u64 seq, u32 timeout);
> > > +void aie2_hmm_invalidate(struct amdxdna_gem_obj *abo, unsigned long cur_seq);
> > > +void aie2_stop_ctx_by_col_map(struct amdxdna_client *client, u32 col_map);
> > > +void aie2_restart_ctx(struct amdxdna_client *client);
> > > #endif /* _AIE2_PCI_H_ */
> > > diff --git a/drivers/accel/amdxdna/aie2_psp.c b/drivers/accel/amdxdna/aie2_psp.c
> > > index 2efcfd1941bf..35ba55e2ab1e 100644
> > > --- a/drivers/accel/amdxdna/aie2_psp.c
> > > +++ b/drivers/accel/amdxdna/aie2_psp.c
> > > @@ -4,8 +4,10 @@
> > > */
> > > #include <drm/drm_device.h>
> > > +#include <drm/drm_gem_shmem_helper.h>
> > > #include <drm/drm_managed.h>
> > > #include <drm/drm_print.h>
> > > +#include <drm/gpu_scheduler.h>
> > > #include <linux/iopoll.h>
> > > #include "aie2_pci.h"
> > > diff --git a/drivers/accel/amdxdna/aie2_smu.c b/drivers/accel/amdxdna/aie2_smu.c
> > > index 3fa7064649aa..91893d438da7 100644
> > > --- a/drivers/accel/amdxdna/aie2_smu.c
> > > +++ b/drivers/accel/amdxdna/aie2_smu.c
> > > @@ -4,7 +4,9 @@
> > > */
> > > #include <drm/drm_device.h>
> > > +#include <drm/drm_gem_shmem_helper.h>
> > > #include <drm/drm_print.h>
> > > +#include <drm/gpu_scheduler.h>
> > > #include <linux/iopoll.h>
> > > #include "aie2_pci.h"
> > > diff --git a/drivers/accel/amdxdna/amdxdna_ctx.c b/drivers/accel/amdxdna/amdxdna_ctx.c
> > > index 8acf8bfe0db9..b76640e1fdd0 100644
> > > --- a/drivers/accel/amdxdna/amdxdna_ctx.c
> > > +++ b/drivers/accel/amdxdna/amdxdna_ctx.c
> > > @@ -7,17 +7,65 @@
> > > #include <drm/drm_device.h>
> > > #include <drm/drm_drv.h>
> > > #include <drm/drm_file.h>
> > > +#include <drm/drm_gem.h>
> > > +#include <drm/drm_gem_shmem_helper.h>
> > > #include <drm/drm_print.h>
> > > +#include <drm/gpu_scheduler.h>
> > > +#include <trace/events/amdxdna.h>
> > > #include "amdxdna_ctx.h"
> > > +#include "amdxdna_gem.h"
> > > #include "amdxdna_pci_drv.h"
> > > #define MAX_HWCTX_ID 255
> > > +#define MAX_ARG_COUNT 4095
> > > -static void amdxdna_hwctx_destroy(struct amdxdna_hwctx *hwctx)
> > > +struct amdxdna_fence {
> > > + struct dma_fence base;
> > > + spinlock_t lock; /* for base */
> > > + struct amdxdna_hwctx *hwctx;
> > > +};
> > > +
> > > +static const char *amdxdna_fence_get_driver_name(struct dma_fence *fence)
> > > +{
> > > + return KBUILD_MODNAME;
> > > +}
> > > +
> > > +static const char *amdxdna_fence_get_timeline_name(struct dma_fence *fence)
> > > +{
> > > + struct amdxdna_fence *xdna_fence;
> > > +
> > > + xdna_fence = container_of(fence, struct amdxdna_fence, base);
> > > +
> > > + return xdna_fence->hwctx->name;
> > > +}
> > > +
> > > +static const struct dma_fence_ops fence_ops = {
> > > + .get_driver_name = amdxdna_fence_get_driver_name,
> > > + .get_timeline_name = amdxdna_fence_get_timeline_name,
> > > +};
> > > +
> > > +static struct dma_fence *amdxdna_fence_create(struct amdxdna_hwctx *hwctx)
> > > +{
> > > + struct amdxdna_fence *fence;
> > > +
> > > + fence = kzalloc(sizeof(*fence), GFP_KERNEL);
> > > + if (!fence)
> > > + return NULL;
> > > +
> > > + fence->hwctx = hwctx;
> > > + spin_lock_init(&fence->lock);
> > > + dma_fence_init(&fence->base, &fence_ops, &fence->lock, hwctx->id, 0);
> > > + return &fence->base;
> > > +}
> > > +
> > > +static void amdxdna_hwctx_destroy_rcu(struct amdxdna_hwctx *hwctx,
> > > + struct srcu_struct *ss)
> > > {
> > > struct amdxdna_dev *xdna = hwctx->client->xdna;
> > > + synchronize_srcu(ss);
> > > +
> > > /* At this point, user is not able to submit new commands */
> > > mutex_lock(&xdna->dev_lock);
> > > xdna->dev_info->ops->hwctx_fini(hwctx);
> > > @@ -27,6 +75,46 @@ static void amdxdna_hwctx_destroy(struct amdxdna_hwctx *hwctx)
> > > kfree(hwctx);
> > > }
> > > +void *amdxdna_cmd_get_payload(struct amdxdna_gem_obj *abo, u32 *size)
> > > +{
> > > + struct amdxdna_cmd *cmd = abo->mem.kva;
> > > + u32 num_masks, count;
> > > +
> > > + if (amdxdna_cmd_get_op(abo) == ERT_CMD_CHAIN)
> > > + num_masks = 0;
> > > + else
> > > + num_masks = 1 + FIELD_GET(AMDXDNA_CMD_EXTRA_CU_MASK, cmd->header);
> > > +
> > > + if (size) {
> > > + count = FIELD_GET(AMDXDNA_CMD_COUNT, cmd->header);
> > > + if (unlikely(count <= num_masks)) {
> > > + *size = 0;
> > > + return NULL;
> > > + }
> > > + *size = (count - num_masks) * sizeof(u32);
> > > + }
> > > + return &cmd->data[num_masks];
> > > +}
> > > +
> > > +int amdxdna_cmd_get_cu_idx(struct amdxdna_gem_obj *abo)
> > > +{
> > > + struct amdxdna_cmd *cmd = abo->mem.kva;
> > > + u32 num_masks, i;
> > > + u32 *cu_mask;
> > > +
> > > + if (amdxdna_cmd_get_op(abo) == ERT_CMD_CHAIN)
> > > + return -1;
> > > +
> > > + num_masks = 1 + FIELD_GET(AMDXDNA_CMD_EXTRA_CU_MASK, cmd->header);
> > > + cu_mask = cmd->data;
> > > + for (i = 0; i < num_masks; i++) {
> > > + if (cu_mask[i])
> > > + return ffs(cu_mask[i]) - 1;
> > > + }
> > > +
> > > + return -1;
> > > +}
> > > +
> > > /*
> > > * This should be called in close() and remove(). DO NOT call in other syscalls.
> > > * This guarantee that when hwctx and resources will be released, if user
> > > @@ -43,7 +131,7 @@ void amdxdna_hwctx_remove_all(struct amdxdna_client *client)
> > > client->pid, hwctx->id);
> > > idr_remove(&client->hwctx_idr, hwctx->id);
> > > mutex_unlock(&client->hwctx_lock);
> > > - amdxdna_hwctx_destroy(hwctx);
> > > + amdxdna_hwctx_destroy_rcu(hwctx, &client->hwctx_srcu);
> > > mutex_lock(&client->hwctx_lock);
> > > }
> > > mutex_unlock(&client->hwctx_lock);
> > > @@ -134,6 +222,12 @@ int amdxdna_drm_destroy_hwctx_ioctl(struct drm_device *dev, void *data, struct d
> > > if (!drm_dev_enter(dev, &idx))
> > > return -ENODEV;
> > > + /*
> > > + * Use hwctx_lock to achieve exclusion with other hwctx writers,
> > > + * SRCU to synchronize with exec/wait command ioctls.
> > > + *
> > > + * The pushed jobs are handled by DRM scheduler during destroy.
> > > + */
> > > mutex_lock(&client->hwctx_lock);
> > > hwctx = idr_find(&client->hwctx_idr, args->handle);
> > > if (!hwctx) {
> > > @@ -146,7 +240,7 @@ int amdxdna_drm_destroy_hwctx_ioctl(struct drm_device *dev, void *data, struct d
> > > idr_remove(&client->hwctx_idr, hwctx->id);
> > > mutex_unlock(&client->hwctx_lock);
> > > - amdxdna_hwctx_destroy(hwctx);
> > > + amdxdna_hwctx_destroy_rcu(hwctx, &client->hwctx_srcu);
> > > XDNA_DBG(xdna, "PID %d destroyed HW context %d", client->pid, args->handle);
> > > out:
> > > @@ -160,10 +254,10 @@ int amdxdna_drm_config_hwctx_ioctl(struct drm_device *dev, void *data, struct dr
> > > struct amdxdna_drm_config_hwctx *args = data;
> > > struct amdxdna_dev *xdna = to_xdna_dev(dev);
> > > struct amdxdna_hwctx *hwctx;
> > > + int ret, idx;
> > > u32 buf_size;
> > > void *buf;
> > > u64 val;
> > > - int ret;
> > > if (!xdna->dev_info->ops->hwctx_config)
> > > return -EOPNOTSUPP;
> > > @@ -202,17 +296,286 @@ int amdxdna_drm_config_hwctx_ioctl(struct drm_device *dev, void *data, struct dr
> > > }
> > > mutex_lock(&xdna->dev_lock);
> > > + idx = srcu_read_lock(&client->hwctx_srcu);
> > > hwctx = idr_find(&client->hwctx_idr, args->handle);
> > > if (!hwctx) {
> > > XDNA_DBG(xdna, "PID %d failed to get hwctx %d", client->pid, args->handle);
> > > ret = -EINVAL;
> > > - goto unlock;
> > > + goto unlock_srcu;
> > > }
> > > ret = xdna->dev_info->ops->hwctx_config(hwctx, args->param_type, val, buf, buf_size);
> > > -unlock:
> > > +unlock_srcu:
> > > + srcu_read_unlock(&client->hwctx_srcu, idx);
> > > mutex_unlock(&xdna->dev_lock);
> > > kfree(buf);
> > > return ret;
> > > }
> > > +
> > > +static void
> > > +amdxdna_arg_bos_put(struct amdxdna_sched_job *job)
> > > +{
> > > + int i;
> > > +
> > > + for (i = 0; i < job->bo_cnt; i++) {
> > > + if (!job->bos[i])
> > > + break;
> > > + drm_gem_object_put(job->bos[i]);
> > > + }
> > > +}
> > > +
> > > +static int
> > > +amdxdna_arg_bos_lookup(struct amdxdna_client *client,
> > > + struct amdxdna_sched_job *job,
> > > + u32 *bo_hdls, u32 bo_cnt)
> > > +{
> > > + struct drm_gem_object *gobj;
> > > + int i, ret;
> > > +
> > > + job->bo_cnt = bo_cnt;
> > > + for (i = 0; i < job->bo_cnt; i++) {
> > > + struct amdxdna_gem_obj *abo;
> > > +
> > > + gobj = drm_gem_object_lookup(client->filp, bo_hdls[i]);
> > > + if (!gobj) {
> > > + ret = -ENOENT;
> > > + goto put_shmem_bo;
> > > + }
> > > + abo = to_xdna_obj(gobj);
> > > +
> > > + mutex_lock(&abo->lock);
> > > + if (abo->pinned) {
> > > + mutex_unlock(&abo->lock);
> > > + job->bos[i] = gobj;
> > > + continue;
> > > + }
> > > +
> > > + ret = amdxdna_gem_pin_nolock(abo);
> > > + if (ret) {
> > > + mutex_unlock(&abo->lock);
> > > + drm_gem_object_put(gobj);
> > > + goto put_shmem_bo;
> > > + }
> > > + abo->pinned = true;
> > > + mutex_unlock(&abo->lock);
> > > +
> > > + job->bos[i] = gobj;
> > > + }
> > > +
> > > + return 0;
> > > +
> > > +put_shmem_bo:
> > > + amdxdna_arg_bos_put(job);
> > > + return ret;
> > > +}
> > > +
> > > +static void amdxdna_sched_job_release(struct kref *ref)
> > > +{
> > > + struct amdxdna_sched_job *job;
> > > +
> > > + job = container_of(ref, struct amdxdna_sched_job, refcnt);
> > > +
> > > + trace_amdxdna_debug_point(job->hwctx->name, job->seq, "job release");
> > > + amdxdna_arg_bos_put(job);
> > > + amdxdna_gem_put_obj(job->cmd_bo);
> > > + kfree(job);
> > > +}
> > > +
> > > +void amdxdna_job_put(struct amdxdna_sched_job *job)
> > > +{
> > > + kref_put(&job->refcnt, amdxdna_sched_job_release);
> > > +}
> > > +
> > > +int amdxdna_cmd_submit(struct amdxdna_client *client,
> > > + u32 cmd_bo_hdl, u32 *arg_bo_hdls, u32 arg_bo_cnt,
> > > + u32 hwctx_hdl, u64 *seq)
> > > +{
> > > + struct amdxdna_dev *xdna = client->xdna;
> > > + struct amdxdna_sched_job *job;
> > > + struct amdxdna_hwctx *hwctx;
> > > + int ret, idx;
> > > +
> > > + XDNA_DBG(xdna, "Command BO hdl %d, Arg BO count %d", cmd_bo_hdl, arg_bo_cnt);
> > > + job = kzalloc(struct_size(job, bos, arg_bo_cnt), GFP_KERNEL);
> > > + if (!job)
> > > + return -ENOMEM;
> > > +
> > > + if (cmd_bo_hdl != AMDXDNA_INVALID_BO_HANDLE) {
> > > + job->cmd_bo = amdxdna_gem_get_obj(client, cmd_bo_hdl, AMDXDNA_BO_CMD);
> > > + if (!job->cmd_bo) {
> > > + XDNA_ERR(xdna, "Failed to get cmd bo from %d", cmd_bo_hdl);
> > > + ret = -EINVAL;
> > > + goto free_job;
> > > + }
> > > + } else {
> > > + job->cmd_bo = NULL;
> > > + }
> > > +
> > > + ret = amdxdna_arg_bos_lookup(client, job, arg_bo_hdls, arg_bo_cnt);
> > > + if (ret) {
> > > + XDNA_ERR(xdna, "Argument BOs lookup failed, ret %d", ret);
> > > + goto cmd_put;
> > > + }
> > > +
> > > + idx = srcu_read_lock(&client->hwctx_srcu);
> > > + hwctx = idr_find(&client->hwctx_idr, hwctx_hdl);
> > > + if (!hwctx) {
> > > + XDNA_DBG(xdna, "PID %d failed to get hwctx %d",
> > > + client->pid, hwctx_hdl);
> > > + ret = -EINVAL;
> > > + goto unlock_srcu;
> > > + }
> > > +
> > > + if (hwctx->status != HWCTX_STAT_READY) {
> > > + XDNA_ERR(xdna, "HW Context is not ready");
> > > + ret = -EINVAL;
> > > + goto unlock_srcu;
> > > + }
> > > +
> > > + job->hwctx = hwctx;
> > > + job->mm = current->mm;
> > > +
> > > + job->fence = amdxdna_fence_create(hwctx);
> > > + if (!job->fence) {
> > > + XDNA_ERR(xdna, "Failed to create fence");
> > > + ret = -ENOMEM;
> > > + goto unlock_srcu;
> > > + }
> > > + kref_init(&job->refcnt);
> > > +
> > > + ret = xdna->dev_info->ops->cmd_submit(hwctx, job, seq);
> > > + if (ret)
> > > + goto put_fence;
> > > +
> > > + /*
> > > + * The amdxdna_hwctx_destroy_rcu() will release hwctx and associated
> > > + * resource after synchronize_srcu(). The submitted jobs should be
> > > + * handled by the queue, for example DRM scheduler, in device layer.
> > > + * For here we can unlock SRCU.
> > > + */
> > > + srcu_read_unlock(&client->hwctx_srcu, idx);
> > > + trace_amdxdna_debug_point(hwctx->name, *seq, "job pushed");
> > > +
> > > + return 0;
> > > +
> > > +put_fence:
> > > + dma_fence_put(job->fence);
> > > +unlock_srcu:
> > > + srcu_read_unlock(&client->hwctx_srcu, idx);
> > > + amdxdna_arg_bos_put(job);
> > > +cmd_put:
> > > + amdxdna_gem_put_obj(job->cmd_bo);
> > > +free_job:
> > > + kfree(job);
> > > + return ret;
> > > +}
> > > +
> > > +/*
> > > + * The submit command ioctl submits a command to firmware. One firmware command
> > > + * may contain multiple command BOs for processing as a whole.
> > > + * The command sequence number is returned which can be used for wait command ioctl.
> > > + */
> > > +static int amdxdna_drm_submit_execbuf(struct amdxdna_client *client,
> > > + struct amdxdna_drm_exec_cmd *args)
> > > +{
> > > + struct amdxdna_dev *xdna = client->xdna;
> > > + u32 *arg_bo_hdls;
> > > + u32 cmd_bo_hdl;
> > > + int ret;
> > > +
> > > + if (!args->arg_count || args->arg_count > MAX_ARG_COUNT) {
> > > + XDNA_ERR(xdna, "Invalid arg bo count %d", args->arg_count);
> > > + return -EINVAL;
> > > + }
> > > +
> > > + /* Only support single command for now. */
> > > + if (args->cmd_count != 1) {
> > > + XDNA_ERR(xdna, "Invalid cmd bo count %d", args->cmd_count);
> > > + return -EINVAL;
> > > + }
> > > +
> > > + cmd_bo_hdl = (u32)args->cmd_handles;
> > > + arg_bo_hdls = kcalloc(args->arg_count, sizeof(u32), GFP_KERNEL);
> > > + if (!arg_bo_hdls)
> > > + return -ENOMEM;
> > > + ret = copy_from_user(arg_bo_hdls, u64_to_user_ptr(args->args),
> > > + args->arg_count * sizeof(u32));
> > > + if (ret) {
> > > + ret = -EFAULT;
> > > + goto free_cmd_bo_hdls;
> > > + }
> > > +
> > > + ret = amdxdna_cmd_submit(client, cmd_bo_hdl, arg_bo_hdls,
> > > + args->arg_count, args->hwctx, &args->seq);
> > > + if (ret)
> > > + XDNA_DBG(xdna, "Submit cmds failed, ret %d", ret);
> > > +
> > > +free_cmd_bo_hdls:
> > > + kfree(arg_bo_hdls);
> > > + if (!ret)
> > > + XDNA_DBG(xdna, "Pushed cmd %lld to scheduler", args->seq);
> > > + return ret;
> > > +}
> > > +
> > > +int amdxdna_drm_submit_cmd_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
> > > +{
> > > + struct amdxdna_client *client = filp->driver_priv;
> > > + struct amdxdna_drm_exec_cmd *args = data;
> > > +
> > > + if (args->ext || args->ext_flags)
> > > + return -EINVAL;
> > > +
> > > + switch (args->type) {
> > > + case AMDXDNA_CMD_SUBMIT_EXEC_BUF:
> > > + return amdxdna_drm_submit_execbuf(client, args);
> > > + }
> > > +
> > > + XDNA_ERR(client->xdna, "Invalid command type %d", args->type);
> > > + return -EINVAL;
> > > +}
> > > +
> > > +int amdxdna_cmd_wait(struct amdxdna_client *client, u32 hwctx_hdl,
> > > + u64 seq, u32 timeout)
> > > +{
> > > + struct amdxdna_dev *xdna = client->xdna;
> > > + struct amdxdna_hwctx *hwctx;
> > > + int ret, idx;
> > > +
> > > + if (!xdna->dev_info->ops->cmd_wait)
> > > + return -EOPNOTSUPP;
> > > +
> > > + /* For locking concerns, see amdxdna_drm_exec_cmd_ioctl. */
> > > + idx = srcu_read_lock(&client->hwctx_srcu);
> > > + hwctx = idr_find(&client->hwctx_idr, hwctx_hdl);
> > > + if (!hwctx) {
> > > + XDNA_DBG(xdna, "PID %d failed to get hwctx %d",
> > > + client->pid, hwctx_hdl);
> > > + ret = -EINVAL;
> > > + goto unlock_hwctx_srcu;
> > > + }
> > > +
> > > + ret = xdna->dev_info->ops->cmd_wait(hwctx, seq, timeout);
> > > +
> > > +unlock_hwctx_srcu:
> > > + srcu_read_unlock(&client->hwctx_srcu, idx);
> > > + return ret;
> > > +}
> > > +
> > > +int amdxdna_drm_wait_cmd_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
> > > +{
> > > + struct amdxdna_client *client = filp->driver_priv;
> > > + struct amdxdna_dev *xdna = to_xdna_dev(dev);
> > > + struct amdxdna_drm_wait_cmd *args = data;
> > > + int ret;
> > > +
> > > + XDNA_DBG(xdna, "PID %d hwctx %d timeout set %d ms for cmd %lld",
> > > + client->pid, args->hwctx, args->timeout, args->seq);
> > > +
> > > + ret = amdxdna_cmd_wait(client, args->hwctx, args->seq, args->timeout);
> > > +
> > > + XDNA_DBG(xdna, "PID %d hwctx %d cmd %lld wait finished, ret %d",
> > > + client->pid, args->hwctx, args->seq, ret);
> > > +
> > > + return ret;
> > > +}
> > > diff --git a/drivers/accel/amdxdna/amdxdna_ctx.h b/drivers/accel/amdxdna/amdxdna_ctx.h
> > > index 665b3208897d..65f9c1dfe32c 100644
> > > --- a/drivers/accel/amdxdna/amdxdna_ctx.h
> > > +++ b/drivers/accel/amdxdna/amdxdna_ctx.h
> > > @@ -6,6 +6,52 @@
> > > #ifndef _AMDXDNA_CTX_H_
> > > #define _AMDXDNA_CTX_H_
> > > +#include "amdxdna_gem.h"
> > > +
> > > +struct amdxdna_hwctx_priv;
> > > +
> > > +enum ert_cmd_opcode {
> > > + ERT_START_CU = 0,
> > > + ERT_CMD_CHAIN = 19,
> > > + ERT_START_NPU = 20,
> > > +};
> > > +
> > > +enum ert_cmd_state {
> > > + ERT_CMD_STATE_INVALID,
> > > + ERT_CMD_STATE_NEW,
> > > + ERT_CMD_STATE_QUEUED,
> > > + ERT_CMD_STATE_RUNNING,
> > > + ERT_CMD_STATE_COMPLETED,
> > > + ERT_CMD_STATE_ERROR,
> > > + ERT_CMD_STATE_ABORT,
> > > + ERT_CMD_STATE_SUBMITTED,
> > > + ERT_CMD_STATE_TIMEOUT,
> > > + ERT_CMD_STATE_NORESPONSE,
> > > +};
> > > +
> > > +/*
> > > + * Interpretation of the beginning of data payload for ERT_START_NPU in
> > > + * amdxdna_cmd. The rest of the payload in amdxdna_cmd is regular kernel args.
> > > + */
> > > +struct amdxdna_cmd_start_npu {
> > > + u64 buffer; /* instruction buffer address */
> > > + u32 buffer_size; /* size of buffer in bytes */
> > > + u32 prop_count; /* properties count */
> > > + u32 prop_args[]; /* properties and regular kernel arguments */
> > > +};
> > > +
> > > +/*
> > > + * Interpretation of the beginning of data payload for ERT_CMD_CHAIN in
> > > + * amdxdna_cmd. The rest of the payload in amdxdna_cmd is cmd BO handles.
> > > + */
> > > +struct amdxdna_cmd_chain {
> > > + u32 command_count;
> > > + u32 submit_index;
> > > + u32 error_index;
> > > + u32 reserved[3];
> > > + u64 data[] __counted_by(command_count);
> > > +};
> > > +
> > > /* Exec buffer command header format */
> > > #define AMDXDNA_CMD_STATE GENMASK(3, 0)
> > > #define AMDXDNA_CMD_EXTRA_CU_MASK GENMASK(11, 10)
> > > @@ -40,9 +86,73 @@ struct amdxdna_hwctx {
> > > struct amdxdna_hwctx_param_config_cu *cus;
> > > };
> > > +#define drm_job_to_xdna_job(j) \
> > > + container_of(j, struct amdxdna_sched_job, base)
> > > +
> > > +struct amdxdna_sched_job {
> > > + struct drm_sched_job base;
> > > + struct kref refcnt;
> > > + struct amdxdna_hwctx *hwctx;
> > > + struct mm_struct *mm;
> > > + /* The fence to notice DRM scheduler that job is done by hardware */
> > > + struct dma_fence *fence;
> > > + /* user can wait on this fence */
> > > + struct dma_fence *out_fence;
> > > + u64 seq;
> > > + struct amdxdna_gem_obj *cmd_bo;
> > > + size_t bo_cnt;
> > > + struct drm_gem_object *bos[] __counted_by(bo_cnt);
> > > +};
> > > +
> > > +static inline u32
> > > +amdxdna_cmd_get_op(struct amdxdna_gem_obj *abo)
> > > +{
> > > + struct amdxdna_cmd *cmd = abo->mem.kva;
> > > +
> > > + return FIELD_GET(AMDXDNA_CMD_OPCODE, cmd->header);
> > > +}
> > > +
> > > +static inline void
> > > +amdxdna_cmd_set_state(struct amdxdna_gem_obj *abo, enum ert_cmd_state s)
> > > +{
> > > + struct amdxdna_cmd *cmd = abo->mem.kva;
> > > +
> > > + cmd->header &= ~AMDXDNA_CMD_STATE;
> > > + cmd->header |= FIELD_PREP(AMDXDNA_CMD_STATE, s);
> > > +}
> > > +
> > > +static inline enum ert_cmd_state
> > > +amdxdna_cmd_get_state(struct amdxdna_gem_obj *abo)
> > > +{
> > > + struct amdxdna_cmd *cmd = abo->mem.kva;
> > > +
> > > + return FIELD_GET(AMDXDNA_CMD_STATE, cmd->header);
> > > +}
> > > +
> > > +void *amdxdna_cmd_get_payload(struct amdxdna_gem_obj *abo, u32 *size);
> > > +int amdxdna_cmd_get_cu_idx(struct amdxdna_gem_obj *abo);
> > > +
> > > +static inline u32 amdxdna_hwctx_col_map(struct amdxdna_hwctx *hwctx)
> > > +{
> > > + return GENMASK(hwctx->start_col + hwctx->num_col - 1,
> > > + hwctx->start_col);
> > > +}
> > > +
> > > +void amdxdna_job_put(struct amdxdna_sched_job *job);
> > > +
> > > void amdxdna_hwctx_remove_all(struct amdxdna_client *client);
> > > +
> > > +int amdxdna_cmd_submit(struct amdxdna_client *client,
> > > + u32 cmd_bo_hdls, u32 *arg_bo_hdls, u32 arg_bo_cnt,
> > > + u32 hwctx_hdl, u64 *seq);
> > > +
> > > +int amdxdna_cmd_wait(struct amdxdna_client *client, u32 hwctx_hdl,
> > > + u64 seq, u32 timeout);
> > > +
> > > int amdxdna_drm_create_hwctx_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
> > > int amdxdna_drm_config_hwctx_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
> > > int amdxdna_drm_destroy_hwctx_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
> > > +int amdxdna_drm_submit_cmd_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
> > > +int amdxdna_drm_wait_cmd_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
> > > #endif /* _AMDXDNA_CTX_H_ */
> > > diff --git a/drivers/accel/amdxdna/amdxdna_gem.c b/drivers/accel/amdxdna/amdxdna_gem.c
> > > index 66373baa4600..091674a4bbfa 100644
> > > --- a/drivers/accel/amdxdna/amdxdna_gem.c
> > > +++ b/drivers/accel/amdxdna/amdxdna_gem.c
> > > @@ -8,6 +8,7 @@
> > > #include <drm/drm_device.h>
> > > #include <drm/drm_gem.h>
> > > #include <drm/drm_gem_shmem_helper.h>
> > > +#include <drm/gpu_scheduler.h>
> > > #include <linux/iosys-map.h>
> > > #include <linux/vmalloc.h>
> > > diff --git a/drivers/accel/amdxdna/amdxdna_mailbox_helper.c b/drivers/accel/amdxdna/amdxdna_mailbox_helper.c
> > > index 42b615394605..5139a9c96a91 100644
> > > --- a/drivers/accel/amdxdna/amdxdna_mailbox_helper.c
> > > +++ b/drivers/accel/amdxdna/amdxdna_mailbox_helper.c
> > > @@ -3,10 +3,15 @@
> > > * Copyright (C) 2024, Advanced Micro Devices, Inc.
> > > */
> > > +#include <drm/amdxdna_accel.h>
> > > #include <drm/drm_device.h>
> > > #include <drm/drm_print.h>
> > > +#include <drm/drm_gem.h>
> > > +#include <drm/drm_gem_shmem_helper.h>
> > > +#include <drm/gpu_scheduler.h>
> > > #include <linux/completion.h>
> > > +#include "amdxdna_gem.h"
> > > #include "amdxdna_mailbox.h"
> > > #include "amdxdna_mailbox_helper.h"
> > > #include "amdxdna_pci_drv.h"
> > > diff --git a/drivers/accel/amdxdna/amdxdna_pci_drv.c b/drivers/accel/amdxdna/amdxdna_pci_drv.c
> > > index 47ea79d4a021..5c1e863825e0 100644
> > > --- a/drivers/accel/amdxdna/amdxdna_pci_drv.c
> > > +++ b/drivers/accel/amdxdna/amdxdna_pci_drv.c
> > > @@ -10,6 +10,7 @@
> > > #include <drm/drm_gem_shmem_helper.h>
> > > #include <drm/drm_ioctl.h>
> > > #include <drm/drm_managed.h>
> > > +#include <drm/gpu_scheduler.h>
> > > #include <linux/iommu.h>
> > > #include <linux/pci.h>
> > > @@ -64,6 +65,7 @@ static int amdxdna_drm_open(struct drm_device *ddev, struct drm_file *filp)
> > > goto unbind_sva;
> > > }
> > > mutex_init(&client->hwctx_lock);
> > > + init_srcu_struct(&client->hwctx_srcu);
> > > idr_init_base(&client->hwctx_idr, AMDXDNA_INVALID_CTX_HANDLE + 1);
> > > mutex_init(&client->mm_lock);
> > > @@ -93,6 +95,7 @@ static void amdxdna_drm_close(struct drm_device *ddev, struct drm_file *filp)
> > > XDNA_DBG(xdna, "closing pid %d", client->pid);
> > > idr_destroy(&client->hwctx_idr);
> > > + cleanup_srcu_struct(&client->hwctx_srcu);
> > > mutex_destroy(&client->hwctx_lock);
> > > mutex_destroy(&client->mm_lock);
> > > if (client->dev_heap)
> > > @@ -133,6 +136,9 @@ static const struct drm_ioctl_desc amdxdna_drm_ioctls[] = {
> > > DRM_IOCTL_DEF_DRV(AMDXDNA_CREATE_BO, amdxdna_drm_create_bo_ioctl, 0),
> > > DRM_IOCTL_DEF_DRV(AMDXDNA_GET_BO_INFO, amdxdna_drm_get_bo_info_ioctl, 0),
> > > DRM_IOCTL_DEF_DRV(AMDXDNA_SYNC_BO, amdxdna_drm_sync_bo_ioctl, 0),
> > > + /* Exectuion */
> > > + DRM_IOCTL_DEF_DRV(AMDXDNA_EXEC_CMD, amdxdna_drm_submit_cmd_ioctl, 0),
> > > + DRM_IOCTL_DEF_DRV(AMDXDNA_WAIT_CMD, amdxdna_drm_wait_cmd_ioctl, 0),
> > > };
> > > static const struct file_operations amdxdna_fops = {
> > > diff --git a/drivers/accel/amdxdna/amdxdna_pci_drv.h b/drivers/accel/amdxdna/amdxdna_pci_drv.h
> > > index 3dddde4ac12a..0324e73094b2 100644
> > > --- a/drivers/accel/amdxdna/amdxdna_pci_drv.h
> > > +++ b/drivers/accel/amdxdna/amdxdna_pci_drv.h
> > > @@ -20,6 +20,7 @@ extern const struct drm_driver amdxdna_drm_drv;
> > > struct amdxdna_dev;
> > > struct amdxdna_gem_obj;
> > > struct amdxdna_hwctx;
> > > +struct amdxdna_sched_job;
> > > /*
> > > * struct amdxdna_dev_ops - Device hardware operation callbacks
> > > @@ -31,6 +32,8 @@ struct amdxdna_dev_ops {
> > > void (*hwctx_fini)(struct amdxdna_hwctx *hwctx);
> > > int (*hwctx_config)(struct amdxdna_hwctx *hwctx, u32 type, u64 value, void *buf, u32 size);
> > > void (*hmm_invalidate)(struct amdxdna_gem_obj *abo, unsigned long cur_seq);
> > > + int (*cmd_submit)(struct amdxdna_hwctx *hwctx, struct amdxdna_sched_job *job, u64 *seq);
> > > + int (*cmd_wait)(struct amdxdna_hwctx *hwctx, u64 seq, u32 timeout);
> > > };
> > > /*
> > > @@ -88,6 +91,8 @@ struct amdxdna_client {
> > > struct list_head node;
> > > pid_t pid;
> > > struct mutex hwctx_lock; /* protect hwctx */
> > > + /* do NOT wait this srcu when hwctx_lock is hold */
> > > + struct srcu_struct hwctx_srcu;
> > > struct idr hwctx_idr;
> > > struct amdxdna_dev *xdna;
> > > struct drm_file *filp;
> > > diff --git a/drivers/accel/amdxdna/amdxdna_sysfs.c b/drivers/accel/amdxdna/amdxdna_sysfs.c
> > > index 668b94b92714..f27e4ee960a0 100644
> > > --- a/drivers/accel/amdxdna/amdxdna_sysfs.c
> > > +++ b/drivers/accel/amdxdna/amdxdna_sysfs.c
> > > @@ -3,9 +3,14 @@
> > > * Copyright (C) 2023-2024, Advanced Micro Devices, Inc.
> > > */
> > > +#include <drm/amdxdna_accel.h>
> > > #include <drm/drm_device.h>
> > > +#include <drm/drm_gem_shmem_helper.h>
> > > #include <drm/drm_print.h>
> > > +#include <drm/gpu_scheduler.h>
> > > +#include <linux/types.h>
> > > +#include "amdxdna_gem.h"
> > > #include "amdxdna_pci_drv.h"
> > > static ssize_t vbnv_show(struct device *dev, struct device_attribute *attr, char *buf)
> > > diff --git a/drivers/accel/amdxdna/npu1_regs.c b/drivers/accel/amdxdna/npu1_regs.c
> > > index 720aab0ed7c4..f00c50461b09 100644
> > > --- a/drivers/accel/amdxdna/npu1_regs.c
> > > +++ b/drivers/accel/amdxdna/npu1_regs.c
> > > @@ -5,6 +5,7 @@
> > > #include <drm/amdxdna_accel.h>
> > > #include <drm/drm_device.h>
> > > +#include <drm/gpu_scheduler.h>
> > > #include <linux/sizes.h>
> > > #include "aie2_pci.h"
> > > diff --git a/drivers/accel/amdxdna/npu2_regs.c b/drivers/accel/amdxdna/npu2_regs.c
> > > index f3ea18bcf294..00cb381031d2 100644
> > > --- a/drivers/accel/amdxdna/npu2_regs.c
> > > +++ b/drivers/accel/amdxdna/npu2_regs.c
> > > @@ -5,6 +5,7 @@
> > > #include <drm/amdxdna_accel.h>
> > > #include <drm/drm_device.h>
> > > +#include <drm/gpu_scheduler.h>
> > > #include <linux/sizes.h>
> > > #include "aie2_pci.h"
> > > diff --git a/drivers/accel/amdxdna/npu4_regs.c b/drivers/accel/amdxdna/npu4_regs.c
> > > index db61142f0d4e..b6dae9667cca 100644
> > > --- a/drivers/accel/amdxdna/npu4_regs.c
> > > +++ b/drivers/accel/amdxdna/npu4_regs.c
> > > @@ -5,6 +5,7 @@
> > > #include <drm/amdxdna_accel.h>
> > > #include <drm/drm_device.h>
> > > +#include <drm/gpu_scheduler.h>
> > > #include <linux/sizes.h>
> > > #include "aie2_pci.h"
> > > diff --git a/drivers/accel/amdxdna/npu5_regs.c b/drivers/accel/amdxdna/npu5_regs.c
> > > index debf4e95b9bb..bed1baf8e160 100644
> > > --- a/drivers/accel/amdxdna/npu5_regs.c
> > > +++ b/drivers/accel/amdxdna/npu5_regs.c
> > > @@ -5,6 +5,7 @@
> > > #include <drm/amdxdna_accel.h>
> > > #include <drm/drm_device.h>
> > > +#include <drm/gpu_scheduler.h>
> > > #include <linux/sizes.h>
> > > #include "aie2_pci.h"
> > > diff --git a/include/trace/events/amdxdna.h b/include/trace/events/amdxdna.h
> > > index 33343d8f0622..c6cb2da7b706 100644
> > > --- a/include/trace/events/amdxdna.h
> > > +++ b/include/trace/events/amdxdna.h
> > > @@ -9,8 +9,49 @@
> > > #if !defined(_TRACE_AMDXDNA_H) || defined(TRACE_HEADER_MULTI_READ)
> > > #define _TRACE_AMDXDNA_H
> > > +#include <drm/gpu_scheduler.h>
> > > #include <linux/tracepoint.h>
> > > +TRACE_EVENT(amdxdna_debug_point,
> > > + TP_PROTO(const char *name, u64 number, const char *str),
> > > +
> > > + TP_ARGS(name, number, str),
> > > +
> > > + TP_STRUCT__entry(__string(name, name)
> > > + __field(u64, number)
> > > + __string(str, str)),
> > > +
> > > + TP_fast_assign(__assign_str(name);
> > > + __entry->number = number;
> > > + __assign_str(str);),
> > > +
> > > + TP_printk("%s:%llu %s", __get_str(name), __entry->number,
> > > + __get_str(str))
> > > +);
> > > +
> > > +TRACE_EVENT(xdna_job,
> > > + TP_PROTO(struct drm_sched_job *sched_job, const char *name, const char *str, u64 seq),
> > > +
> > > + TP_ARGS(sched_job, name, str, seq),
> > > +
> > > + TP_STRUCT__entry(__string(name, name)
> > > + __string(str, str)
> > > + __field(u64, fence_context)
> > > + __field(u64, fence_seqno)
> > > + __field(u64, seq)),
> > > +
> > > + TP_fast_assign(__assign_str(name);
> > > + __assign_str(str);
> > > + __entry->fence_context = sched_job->s_fence->finished.context;
> > > + __entry->fence_seqno = sched_job->s_fence->finished.seqno;
> > > + __entry->seq = seq;),
> > > +
> > > + TP_printk("fence=(context:%llu, seqno:%lld), %s seq#:%lld %s",
> > > + __entry->fence_context, __entry->fence_seqno,
> > > + __get_str(name), __entry->seq,
> > > + __get_str(str))
> > > +);
> > > +
> > > DECLARE_EVENT_CLASS(xdna_mbox_msg,
> > > TP_PROTO(char *name, u8 chann_id, u32 opcode, u32 msg_id),
> > > diff --git a/include/uapi/drm/amdxdna_accel.h b/include/uapi/drm/amdxdna_accel.h
> > > index 3792750834b2..08f3ec7146ab 100644
> > > --- a/include/uapi/drm/amdxdna_accel.h
> > > +++ b/include/uapi/drm/amdxdna_accel.h
> > > @@ -13,6 +13,7 @@
> > > extern "C" {
> > > #endif
> > > +#define AMDXDNA_INVALID_CMD_HANDLE (~0UL)
> > > #define AMDXDNA_INVALID_ADDR (~0UL)
> > > #define AMDXDNA_INVALID_CTX_HANDLE 0
> > > #define AMDXDNA_INVALID_BO_HANDLE 0
> > > @@ -29,6 +30,8 @@ enum amdxdna_drm_ioctl_id {
> > > DRM_AMDXDNA_CREATE_BO,
> > > DRM_AMDXDNA_GET_BO_INFO,
> > > DRM_AMDXDNA_SYNC_BO,
> > > + DRM_AMDXDNA_EXEC_CMD,
> > > + DRM_AMDXDNA_WAIT_CMD,
> > > };
> > > /**
> > > @@ -201,6 +204,54 @@ struct amdxdna_drm_sync_bo {
> > > __u64 size;
> > > };
> > > +enum amdxdna_cmd_type {
> > > + AMDXDNA_CMD_SUBMIT_EXEC_BUF = 0,
> > > + AMDXDNA_CMD_SUBMIT_DEPENDENCY,
> > > + AMDXDNA_CMD_SUBMIT_SIGNAL,
> > > +};
> > > +
> > > +/**
> > > + * struct amdxdna_drm_exec_cmd - Execute command.
> > > + * @ext: MBZ.
> > > + * @ext_flags: MBZ.
> > > + * @hwctx: Hardware context handle.
> > > + * @type: One of command type in enum amdxdna_cmd_type.
> > > + * @cmd_handles: Array of command handles or the command handle itself
> > > + * in case of just one.
> > > + * @args: Array of arguments for all command handles.
> > > + * @cmd_count: Number of command handles in the cmd_handles array.
> > > + * @arg_count: Number of arguments in the args array.
> > > + * @seq: Returned sequence number for this command.
> > > + */
> > > +struct amdxdna_drm_exec_cmd {
> > > + __u64 ext;
> > > + __u64 ext_flags;
> > > + __u32 hwctx;
> > > + __u32 type;
> > > + __u64 cmd_handles;
> > > + __u64 args;
> > > + __u32 cmd_count;
> > > + __u32 arg_count;
> > > + __u64 seq;
> > > +};
> > > +
> > > +/**
> > > + * struct amdxdna_drm_wait_cmd - Wait exectuion command.
> > > + *
> > > + * @hwctx: hardware context handle.
> > > + * @timeout: timeout in ms, 0 implies infinite wait.
> > > + * @seq: sequence number of the command returned by execute command.
> > > + *
> > > + * Wait a command specified by seq to be completed.
> > > + * Using AMDXDNA_INVALID_CMD_HANDLE as seq means wait till there is a free slot
> > > + * to submit a new command.
> > > + */
> > > +struct amdxdna_drm_wait_cmd {
> > > + __u32 hwctx;
> > > + __u32 timeout;
> > > + __u64 seq;
> > > +};
> > > +
> > > #define DRM_IOCTL_AMDXDNA_CREATE_HWCTX \
> > > DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_CREATE_HWCTX, \
> > > struct amdxdna_drm_create_hwctx)
> > > @@ -225,6 +276,14 @@ struct amdxdna_drm_sync_bo {
> > > DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_SYNC_BO, \
> > > struct amdxdna_drm_sync_bo)
> > > +#define DRM_IOCTL_AMDXDNA_EXEC_CMD \
> > > + DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_EXEC_CMD, \
> > > + struct amdxdna_drm_exec_cmd)
> > > +
> > > +#define DRM_IOCTL_AMDXDNA_WAIT_CMD \
> > > + DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_WAIT_CMD, \
> > > + struct amdxdna_drm_wait_cmd)
> > > +
> > > #if defined(__cplusplus)
> > > } /* extern c end */
> > > #endif
> > > --
> > > 2.34.1
> > >
