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Message-ID: <6880a72f-c55a-b21d-3b20-0024cdaaff6d@amd.com>
Date: Fri, 8 Nov 2024 14:18:15 -0800
From: Lizhi Hou <lizhi.hou@....com>
To: Matthew Brost <matthew.brost@...el.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 V7 07/10] accel/amdxdna: Add command execution
On 11/8/24 09:21, Matthew Brost wrote:
> On Thu, Nov 07, 2024 at 08:34:45PM -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 | 634 +++++++++++++++++-
>> drivers/accel/amdxdna/aie2_message.c | 343 ++++++++++
>> drivers/accel/amdxdna/aie2_pci.c | 5 +
>> drivers/accel/amdxdna/aie2_pci.h | 40 ++
>> 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, 1559 insertions(+), 9 deletions(-)
>>
>> diff --git a/drivers/accel/amdxdna/aie2_ctx.c b/drivers/accel/amdxdna/aie2_ctx.c
>> index ae8a91dad042..4641e52b59e2 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 +21,342 @@
>> #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);
>> + 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_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 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);
>> +
>> + if (job->out_fence)
>> + dma_fence_put(job->out_fence);
>> + 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 +466,66 @@ 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);
>> +}
>> +
>> +static void aie2_ctx_syncobj_add_fence(struct amdxdna_hwctx *hwctx,
>> + struct dma_fence *ofence, u64 seq)
>> +{
>> + struct drm_syncobj *syncobj = hwctx->priv->syncobj;
>> + struct dma_fence_chain *chain;
>> +
>> + if (!syncobj)
>> + return;
>> +
>> + chain = dma_fence_chain_alloc();
>> + if (!chain)
>> + return;
> You have very subtlety broken dma-fencing rules. This is going to create
> a lock chain of:
>
> mutex_lock(&hwctx->priv->io_lock)
> recliam();
> mutex_unlock(&hwctx->priv->io_lock)
>
> But you published the dma-fence for the job which is in the path of
> reclaim. Lockdep should complain if you have all the correct annotations
> and in theory you can deadlock.
>
> So I think you prealloc the chain() before publishing the dma-fence and
> then I'd also prime 'hwctx->priv->io_lock' which a reclaim annotation.
>
> e.g.
>
> fs_reclaim_acquire();
> might_lock(&hwctx->priv->io_lock);
> fs_reclaim_release();
Ok, it makes sense to prealloc the chain.
>
>> +
>> + drm_syncobj_add_point(syncobj, chain, ofence, seq);
>> +}
>> +
>> 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 +543,7 @@ 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 +551,47 @@ 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;
>> + }
>> +
>> 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 +606,13 @@ 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 +623,16 @@ 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 +643,35 @@ 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 +738,160 @@ 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;
>> +}
>> +
>> +static void aie2_hwctx_push_job(struct amdxdna_sched_job *job, u64 *seq)
>> +{
>> + struct amdxdna_hwctx *hwctx = job->hwctx;
>> +
>> + mutex_lock(&hwctx->priv->io_lock);
>> + drm_sched_job_arm(&job->base);
>> + job->seq = hwctx->priv->seq++;
>> + *seq = job->seq;
>> +
>> + job->out_fence = dma_fence_get(&job->base.s_fence->finished);
>> + drm_sched_entity_push_job(&job->base);
>> + aie2_ctx_syncobj_add_fence(hwctx, job->out_fence, *seq);
>> + mutex_unlock(&hwctx->priv->io_lock);
>> +}
>> +
>> +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 = down_interruptible(&hwctx->priv->job_sem);
>> + if (ret) {
>> + XDNA_ERR(xdna, "Grab job sem failed, ret %d", ret);
>> + return ret;
>> + }
>> +
>> + 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 up_sem;
>> + }
>> +
>> +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;
>> + }
>> + }
>> +
> Any reason you can't arm the job here and install job's finished fence
> in dma-resv slot? IIRC at one point in time in Xe we used the
> 'job->fence', this is a hardware fence in Xe, assuming this the same
> here and it ended up causing some issues - exactly what I cannot recall.
> The scheduler again is really designed to install the job's finished
> fence in dma-resv / syncobjs rather than driver internal fences.
>
> That of course would mean taking hwctx->priv->io_lock underneath all
> other locks in this loop at the final step.
Ok, I will change this.
Thanks,
Lizhi
>
> Matt
>
>> + for (i = 0; i < job->bo_cnt; i++)
>> + dma_resv_add_fence(job->bos[i]->resv, job->fence, DMA_RESV_USAGE_WRITE);
>> +
>> + read_unlock(&xdna->notifier_lock);
>> + drm_gem_unlock_reservations(job->bos, job->bo_cnt, &acquire_ctx);
>> +
>> + aie2_hwctx_push_job(job, seq);
>> +
>> + return 0;
>> +
>> +cleanup_job:
>> + drm_sched_job_cleanup(&job->base);
>> +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 caeb07d1dc6b..fb369d615969 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"
>>
>> @@ -495,4 +498,6 @@ 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..bc6910875d9d 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 +225,24 @@ 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_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 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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