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Message-ID: <ZzLwh7JGXZeER+yx@lstrano-desk.jf.intel.com>
Date: Mon, 11 Nov 2024 22:07:03 -0800
From: Matthew Brost <matthew.brost@...el.com>
To: Lizhi Hou <lizhi.hou@....com>
CC: <ogabbay@...nel.org>, <quic_jhugo@...cinc.com>,
<dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
<min.ma@....com>, <max.zhen@....com>, <sonal.santan@....com>,
<king.tam@....com>
Subject: Re: [PATCH V9 07/10] accel/amdxdna: Add command execution
On Mon, Nov 11, 2024 at 10:17:08AM -0800, Lizhi Hou wrote:
> Add interfaces for user application to submit command and wait for its
> completion.
>
> Co-developed-by: Min Ma <min.ma@....com>
> Signed-off-by: Min Ma <min.ma@....com>
> Signed-off-by: Lizhi Hou <lizhi.hou@....com>
> ---
> drivers/accel/amdxdna/aie2_ctx.c | 607 +++++++++++++++++-
> drivers/accel/amdxdna/aie2_message.c | 343 ++++++++++
> drivers/accel/amdxdna/aie2_pci.c | 5 +
> drivers/accel/amdxdna/aie2_pci.h | 39 ++
> drivers/accel/amdxdna/aie2_psp.c | 2 +
> drivers/accel/amdxdna/aie2_smu.c | 2 +
> drivers/accel/amdxdna/amdxdna_ctx.c | 320 ++++++++-
> drivers/accel/amdxdna/amdxdna_ctx.h | 111 ++++
> drivers/accel/amdxdna/amdxdna_gem.c | 1 +
> .../accel/amdxdna/amdxdna_mailbox_helper.c | 5 +
> drivers/accel/amdxdna/amdxdna_pci_drv.c | 12 +
> 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 | 38 ++
> 19 files changed, 1531 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/accel/amdxdna/aie2_ctx.c b/drivers/accel/amdxdna/aie2_ctx.c
> index ae8a91dad042..ae061ec374a9 100644
> --- a/drivers/accel/amdxdna/aie2_ctx.c
> +++ b/drivers/accel/amdxdna/aie2_ctx.c
> @@ -8,8 +8,12 @@
> #include <drm/drm_gem.h>
> #include <drm/drm_gem_shmem_helper.h>
> #include <drm/drm_print.h>
> +#include <drm/drm_syncobj.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 +21,321 @@
> #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 /* milliseconds */
> +
> +static void aie2_job_release(struct kref *ref)
> +{
> + struct amdxdna_sched_job *job;
> +
> + job = container_of(ref, struct amdxdna_sched_job, refcnt);
> + amdxdna_sched_job_cleanup(job);
> + if (job->out_fence)
> + dma_fence_put(job->out_fence);
> + kfree(job);
> +}
> +
> +static void aie2_job_put(struct amdxdna_sched_job *job)
> +{
> + kref_put(&job->refcnt, aie2_job_release);
> +}
> +
> +/* 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_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 struct dma_fence *aie2_cmd_get_out_fence(struct amdxdna_hwctx *hwctx, u64 seq)
> +{
> + struct dma_fence *fence, *out_fence = NULL;
> + int ret;
> +
> + fence = drm_syncobj_fence_get(hwctx->priv->syncobj);
> + if (!fence)
> + return NULL;
> +
> + ret = dma_fence_chain_find_seqno(&fence, seq);
> + if (ret)
> + goto out;
> +
> + out_fence = dma_fence_get(dma_fence_chain_contained(fence));
> +
> +out:
> + dma_fence_put(fence);
> + return out_fence;
> +}
> +
> +static void aie2_hwctx_wait_for_idle(struct amdxdna_hwctx *hwctx)
> +{
> + struct dma_fence *fence;
> +
> + fence = aie2_cmd_get_out_fence(hwctx, hwctx->priv->seq - 1);
> + if (!fence)
> + return;
> +
> + dma_fence_wait(fence, false);
> + dma_fence_put(fence);
> +}
> +
> +static void
> +aie2_sched_notify(struct amdxdna_sched_job *job)
> +{
> + struct dma_fence *fence = job->fence;
> +
> + trace_xdna_job(&job->base, job->hwctx->name, "signaled fence", job->seq);
> + job->hwctx->priv->completed++;
> + dma_fence_signal(fence);
> +
> + up(&job->hwctx->priv->job_sem);
> + job->job_done = true;
> + dma_fence_put(fence);
> + mmput(job->mm);
> + aie2_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);
> + aie2_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);
> + if (!job->job_done)
> + up(&hwctx->priv->job_sem);
> +
> + drm_sched_job_cleanup(sched_job);
> + aie2_job_put(job);
> +}
> +
> +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;
> @@ -126,13 +445,50 @@ static void aie2_release_resource(struct amdxdna_hwctx *hwctx)
> XDNA_ERR(xdna, "Release AIE resource failed, ret %d", ret);
> }
>
> +static int aie2_ctx_syncobj_create(struct amdxdna_hwctx *hwctx)
> +{
> + struct amdxdna_dev *xdna = hwctx->client->xdna;
> + struct drm_file *filp = hwctx->client->filp;
> + struct drm_syncobj *syncobj;
> + u32 hdl;
> + int ret;
> +
> + hwctx->syncobj_hdl = AMDXDNA_INVALID_FENCE_HANDLE;
> +
> + ret = drm_syncobj_create(&syncobj, 0, NULL);
> + if (ret) {
> + XDNA_ERR(xdna, "Create ctx syncobj failed, ret %d", ret);
> + return ret;
> + }
> + ret = drm_syncobj_get_handle(filp, syncobj, &hdl);
> + if (ret) {
> + drm_syncobj_put(syncobj);
> + XDNA_ERR(xdna, "Create ctx syncobj handle failed, ret %d", ret);
> + return ret;
> + }
> + hwctx->priv->syncobj = syncobj;
> + hwctx->syncobj_hdl = hdl;
> +
> + return 0;
> +}
> +
> +static void aie2_ctx_syncobj_destroy(struct amdxdna_hwctx *hwctx)
> +{
> + /*
> + * The syncobj_hdl is owned by user space and will be cleaned up
> + * separately.
> + */
> + drm_syncobj_put(hwctx->priv->syncobj);
> +}
> +
> 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)
> @@ -150,6 +506,7 @@ int aie2_hwctx_init(struct amdxdna_hwctx *hwctx)
> drm_gem_object_get(to_gobj(heap));
> mutex_unlock(&client->mm_lock);
> priv->heap = heap;
> + sema_init(&priv->job_sem, HWCTX_MAX_CMDS);
>
> ret = amdxdna_gem_pin(heap);
> if (ret) {
> @@ -157,10 +514,52 @@ 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);
> +
> + fs_reclaim_acquire(GFP_KERNEL);
> + might_lock(&priv->io_lock);
> + fs_reclaim_release(GFP_KERNEL);
> +
> + 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;
> + }
> +
> 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);
> @@ -175,6 +574,13 @@ int aie2_hwctx_init(struct amdxdna_hwctx *hwctx)
> XDNA_ERR(xdna, "Map host buffer failed, ret %d", ret);
> goto release_resource;
> }
> +
> + ret = aie2_ctx_syncobj_create(hwctx);
> + if (ret) {
> + XDNA_ERR(xdna, "Create syncobj failed, ret %d", ret);
> + goto release_resource;
> + }
> +
> hwctx->status = HWCTX_STAT_INIT;
>
> XDNA_DBG(xdna, "hwctx %s init completed", hwctx->name);
> @@ -185,7 +591,16 @@ 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 +611,35 @@ int aie2_hwctx_init(struct amdxdna_hwctx *hwctx)
>
> void aie2_hwctx_fini(struct amdxdna_hwctx *hwctx)
> {
> + 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);
> + aie2_ctx_syncobj_destroy(hwctx);
> +
> + 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 +706,165 @@ 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;
> + }
> +
> + read_lock(&xdna->notifier_lock);
> + if (mmu_interval_read_retry(&abo->mem.notifier, range.notifier_seq)) {
> + read_unlock(&xdna->notifier_lock);
> + goto again;
> + }
> + abo->mem.map_invalid = false;
> + read_unlock(&xdna->notifier_lock);
> +
> +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 dma_fence_chain *chain;
> + struct amdxdna_gem_obj *abo;
> + unsigned long timeout = 0;
> + int ret, i;
> +
> + ret = down_interruptible(&hwctx->priv->job_sem);
> + if (ret) {
> + XDNA_ERR(xdna, "Grab job sem failed, ret %d", ret);
> + return ret;
> + }
> +
> + chain = dma_fence_chain_alloc();
> + if (!chain) {
> + XDNA_ERR(xdna, "Alloc fence chain failed");
> + ret = -ENOMEM;
> + goto up_sem;
> + }
> +
> + ret = drm_sched_job_init(&job->base, &hwctx->priv->entity, 1, hwctx);
> + if (ret) {
> + XDNA_ERR(xdna, "DRM job init failed, ret %d", ret);
> + goto free_chain;
> + }
> +
> +retry:
> + ret = drm_gem_lock_reservations(job->bos, job->bo_cnt, &acquire_ctx);
> + if (ret) {
> + XDNA_WARN(xdna, "Failed to lock BOs, ret %d", ret);
> + goto cleanup_job;
> + }
> +
> + for (i = 0; i < job->bo_cnt; i++) {
> + 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 cleanup_job;
> + }
> + }
> +
> + read_lock(&xdna->notifier_lock);
> + for (i = 0; i < job->bo_cnt; i++) {
> + abo = to_xdna_obj(job->bos[i]);
> + if (abo->mem.map_invalid) {
> + read_unlock(&xdna->notifier_lock);
> + 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 cleanup_job;
> + }
> +
> + ret = aie2_populate_range(abo);
> + if (ret)
> + goto cleanup_job;
> + goto retry;
> + }
> + }
> +
> + mutex_lock(&hwctx->priv->io_lock);
> + drm_sched_job_arm(&job->base);
> + job->out_fence = dma_fence_get(&job->base.s_fence->finished);
> + for (i = 0; i < job->bo_cnt; i++)
> + dma_resv_add_fence(job->bos[i]->resv, job->out_fence, DMA_RESV_USAGE_WRITE);
> + job->seq = hwctx->priv->seq++;
> + kref_get(&job->refcnt);
> + drm_sched_entity_push_job(&job->base);
> +
Your scheduler usage / lock scheme looks correct.
Matt
> + *seq = job->seq;
> + drm_syncobj_add_point(hwctx->priv->syncobj, chain, job->out_fence, *seq);
> + mutex_unlock(&hwctx->priv->io_lock);
> +
> + read_unlock(&xdna->notifier_lock);
> + drm_gem_unlock_reservations(job->bos, job->bo_cnt, &acquire_ctx);
> +
> + aie2_job_put(job);
> +
> + return 0;
> +
> +cleanup_job:
> + drm_sched_job_cleanup(&job->base);
> +free_chain:
> + dma_fence_chain_free(chain);
> +up_sem:
> + up(&hwctx->priv->job_sem);
> + job->job_done = true;
> + 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;
> +
> + write_lock(&xdna->notifier_lock);
> + abo->mem.map_invalid = true;
> + mmu_interval_set_seq(&abo->mem.notifier, cur_seq);
> + write_unlock(&xdna->notifier_lock);
> + ret = dma_resv_wait_timeout(gobj->resv, DMA_RESV_USAGE_BOOKKEEP,
> + true, MAX_SCHEDULE_TIMEOUT);
> + 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 40d9e4261e8b..db62954eb378 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/bitfield.h>
> #include <linux/errno.h>
> #include <linux/pci.h>
> @@ -362,3 +364,344 @@ 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 6181854c799c..465764712040 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"
>
> @@ -496,4 +499,6 @@ 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,
> + .hmm_invalidate = aie2_hmm_invalidate,
> };
> diff --git a/drivers/accel/amdxdna/aie2_pci.h b/drivers/accel/amdxdna/aie2_pci.h
> index 3ac936e2c9d1..9836f721fc9a 100644
> --- a/drivers/accel/amdxdna/aie2_pci.h
> +++ b/drivers/accel/amdxdna/aie2_pci.h
> @@ -6,6 +6,8 @@
> #ifndef _AIE2_PCI_H_
> #define _AIE2_PCI_H_
>
> +#include <linux/semaphore.h>
> +
> #include "amdxdna_mailbox.h"
>
> #define AIE2_INTERVAL 20000 /* us */
> @@ -76,8 +78,10 @@ enum psp_reg_idx {
> PSP_MAX_REGS /* Keep this at the end */
> };
>
> +struct amdxdna_client;
> struct amdxdna_fw_ver;
> struct amdxdna_hwctx;
> +struct amdxdna_sched_job;
>
> struct psp_config {
> const void *fw_buf;
> @@ -118,9 +122,31 @@ 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;
> + u32 num_pending;
> + u64 seq;
> + struct semaphore job_sem;
> + bool job_done;
> +
> + /* Completed job counter */
> + u64 completed;
> +
> + struct amdxdna_gem_obj *cmd_buf[HWCTX_MAX_CMDS];
> + struct drm_syncobj *syncobj;
> };
>
> struct amdxdna_dev_hdl {
> @@ -199,10 +225,23 @@ 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);
> +void aie2_hmm_invalidate(struct amdxdna_gem_obj *abo, unsigned long cur_seq);
> +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 b03501e81065..dc3a072ce3b6 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/bitfield.h>
> #include <linux/iopoll.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 9489399adea1..13cfbab9caa0 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);
> @@ -135,6 +223,12 @@ 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) {
> @@ -147,7 +241,7 @@ 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:
> @@ -161,10 +255,10 @@ 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;
> @@ -203,17 +297,231 @@ 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;
> +}
> +
> +void amdxdna_sched_job_cleanup(struct amdxdna_sched_job *job)
> +{
> + trace_amdxdna_debug_point(job->hwctx->name, job->seq, "job release");
> + amdxdna_arg_bos_put(job);
> + amdxdna_gem_put_obj(job->cmd_bo);
> +}
> +
> +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;
> +}
> diff --git a/drivers/accel/amdxdna/amdxdna_ctx.h b/drivers/accel/amdxdna/amdxdna_ctx.h
> index b409d0731ab8..18ed9bdbd6d8 100644
> --- a/drivers/accel/amdxdna/amdxdna_ctx.h
> +++ b/drivers/accel/amdxdna/amdxdna_ctx.h
> @@ -6,6 +6,54 @@
> #ifndef _AMDXDNA_CTX_H_
> #define _AMDXDNA_CTX_H_
>
> +#include <linux/bitfield.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)
> @@ -41,9 +89,72 @@ struct amdxdna_hwctx {
> u32 syncobj_hdl;
> };
>
> +#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;
> + bool job_done;
> + 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_sched_job_cleanup(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);
>
> #endif /* _AMDXDNA_CTX_H_ */
> diff --git a/drivers/accel/amdxdna/amdxdna_gem.c b/drivers/accel/amdxdna/amdxdna_gem.c
> index f2ba86ae9e1a..4dfeca306d98 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 172109cc9617..32a58bb6e6b1 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 +136,8 @@ 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),
> + /* Execution */
> + DRM_IOCTL_DEF_DRV(AMDXDNA_EXEC_CMD, amdxdna_drm_submit_cmd_ioctl, 0),
> };
>
> static const struct file_operations amdxdna_fops = {
> @@ -190,9 +195,16 @@ static int amdxdna_probe(struct pci_dev *pdev, const struct pci_device_id *id)
> return -ENODEV;
>
> drmm_mutex_init(&xdna->ddev, &xdna->dev_lock);
> + rwlock_init(&xdna->notifier_lock);
> INIT_LIST_HEAD(&xdna->client_list);
> pci_set_drvdata(pdev, xdna);
>
> + if (IS_ENABLED(CONFIG_LOCKDEP)) {
> + fs_reclaim_acquire(GFP_KERNEL);
> + might_lock(&xdna->notifier_lock);
> + fs_reclaim_release(GFP_KERNEL);
> + }
> +
> mutex_lock(&xdna->dev_lock);
> ret = xdna->dev_info->ops->init(xdna);
> mutex_unlock(&xdna->dev_lock);
> diff --git a/drivers/accel/amdxdna/amdxdna_pci_drv.h b/drivers/accel/amdxdna/amdxdna_pci_drv.h
> index 3dddde4ac12a..ec22a074aac6 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 +32,7 @@ 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);
> };
>
> /*
> @@ -69,6 +71,7 @@ struct amdxdna_dev {
> struct mutex dev_lock; /* per device lock */
> struct list_head client_list;
> struct amdxdna_fw_ver fw_ver;
> + rwlock_t notifier_lock; /* for mmu notifier*/
> };
>
> /*
> @@ -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 e3e78b79a8e7..3e88ed386fac 100644
> --- a/include/uapi/drm/amdxdna_accel.h
> +++ b/include/uapi/drm/amdxdna_accel.h
> @@ -13,9 +13,11 @@
> 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
> +#define AMDXDNA_INVALID_FENCE_HANDLE 0
>
> enum amdxdna_device_type {
> AMDXDNA_DEV_TYPE_UNKNOWN = -1,
> @@ -29,6 +31,7 @@ enum amdxdna_drm_ioctl_id {
> DRM_AMDXDNA_CREATE_BO,
> DRM_AMDXDNA_GET_BO_INFO,
> DRM_AMDXDNA_SYNC_BO,
> + DRM_AMDXDNA_EXEC_CMD,
> };
>
> /**
> @@ -201,6 +204,37 @@ 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;
> +};
> +
> #define DRM_IOCTL_AMDXDNA_CREATE_HWCTX \
> DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_CREATE_HWCTX, \
> struct amdxdna_drm_create_hwctx)
> @@ -225,6 +259,10 @@ 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)
> +
> #if defined(__cplusplus)
> } /* extern c end */
> #endif
> --
> 2.34.1
>
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