accel/amdxdna: Remove hardware context status

One newly supported command does not require hardware context configuration
to be performed upfront. As a result, checking hardware context status
causes this command to fail incorrectly.

Remove hardware context status handling entirely. For other commands,
if userspace submits a request without configuring the hardware context
first, the firmware will report an error or time out as appropriate.

Fixes: aac243092b70 ("accel/amdxdna: Add command execution")
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260202212450.2681273-1-lizhi.hou@amd.com

3 files changed, 5 insertions, 28 deletions

diff --git a/drivers/accel/amdxdna/aie2_ctx.c b/drivers/accel/amdxdna/aie2_ctx.c
index c4a58c00e442..ad5b5cd0bc81 100644
--- a/drivers/accel/amdxdna/aie2_ctx.c
+++ b/drivers/accel/amdxdna/aie2_ctx.c
@@ -47,17 +47,6 @@ static void aie2_job_put(struct amdxdna_sched_job *job)
 	kref_put(&job->refcnt, aie2_job_release);
 }
 
-static void aie2_hwctx_status_shift_stop(struct amdxdna_hwctx *hwctx)
-{
-	 hwctx->old_status = hwctx->status;
-	 hwctx->status = HWCTX_STAT_STOP;
-}
-
-static void aie2_hwctx_status_restore(struct amdxdna_hwctx *hwctx)
-{
-	hwctx->status = hwctx->old_status;
-}
-
 /* 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)
@@ -84,11 +73,6 @@ static int aie2_hwctx_restart(struct amdxdna_dev *xdna, struct amdxdna_hwctx *hw
 		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, NULL);
 	if (ret) {
 		XDNA_ERR(xdna, "Config cu failed, ret %d", ret);
@@ -140,7 +124,6 @@ static int aie2_hwctx_suspend_cb(struct amdxdna_hwctx *hwctx, void *arg)
 
 	aie2_hwctx_wait_for_idle(hwctx);
 	aie2_hwctx_stop(xdna, hwctx, NULL);
-	aie2_hwctx_status_shift_stop(hwctx);
 
 	return 0;
 }
@@ -162,7 +145,6 @@ static int aie2_hwctx_resume_cb(struct amdxdna_hwctx *hwctx, void *arg)
 {
 	struct amdxdna_dev *xdna = hwctx->client->xdna;
 
-	aie2_hwctx_status_restore(hwctx);
 	return aie2_hwctx_restart(xdna, hwctx);
 }
 
@@ -315,7 +297,7 @@ aie2_sched_job_run(struct drm_sched_job *sched_job)
 	struct dma_fence *fence;
 	int ret;
 
-	if (hwctx->status != HWCTX_STAT_READY)
+	if (!hwctx->priv->mbox_chann)
 		return NULL;
 
 	if (!mmget_not_zero(job->mm))
@@ -666,7 +648,6 @@ int aie2_hwctx_init(struct amdxdna_hwctx *hwctx)
 	}
 	amdxdna_pm_suspend_put(xdna);
 
-	hwctx->status = HWCTX_STAT_INIT;
 	init_waitqueue_head(&priv->job_free_wq);
 
 	XDNA_DBG(xdna, "hwctx %s init completed", hwctx->name);
@@ -710,7 +691,6 @@ void aie2_hwctx_fini(struct amdxdna_hwctx *hwctx)
 	/* Request fw to destroy hwctx and cancel the rest pending requests */
 	drm_sched_stop(&hwctx->priv->sched, NULL);
 	aie2_release_resource(hwctx);
-	hwctx->status = HWCTX_STAT_STOP;
 	drm_sched_start(&hwctx->priv->sched, 0);
 
 	mutex_unlock(&xdna->dev_lock);
@@ -755,7 +735,7 @@ static int aie2_hwctx_cu_config(struct amdxdna_hwctx *hwctx, void *buf, u32 size
 	if (XDNA_MBZ_DBG(xdna, config->pad, sizeof(config->pad)))
 		return -EINVAL;
 
-	if (hwctx->status != HWCTX_STAT_INIT) {
+	if (hwctx->cus) {
 		XDNA_ERR(xdna, "Not support re-config CU");
 		return -EINVAL;
 	}
@@ -786,7 +766,6 @@ static int aie2_hwctx_cu_config(struct amdxdna_hwctx *hwctx, void *buf, u32 size
 	}
 
 	wmb(); /* To avoid locking in command submit when check status */
-	hwctx->status = HWCTX_STAT_READY;
 
 	return 0;
 
diff --git a/drivers/accel/amdxdna/aie2_message.c b/drivers/accel/amdxdna/aie2_message.c
index 99215328505e..7d7dcfeaf794 100644
--- a/drivers/accel/amdxdna/aie2_message.c
+++ b/drivers/accel/amdxdna/aie2_message.c
@@ -493,6 +493,9 @@ int aie2_config_cu(struct amdxdna_hwctx *hwctx,
 	if (!chann)
 		return -ENODEV;
 
+	if (!hwctx->cus)
+		return 0;
+
 	if (hwctx->cus->num_cus > MAX_NUM_CUS) {
 		XDNA_DBG(xdna, "Exceed maximum CU %d", MAX_NUM_CUS);
 		return -EINVAL;
diff --git a/drivers/accel/amdxdna/amdxdna_ctx.h b/drivers/accel/amdxdna/amdxdna_ctx.h
index b29449a92f60..16c85f08f03c 100644
--- a/drivers/accel/amdxdna/amdxdna_ctx.h
+++ b/drivers/accel/amdxdna/amdxdna_ctx.h
@@ -99,11 +99,6 @@ struct amdxdna_hwctx {
 	u32				start_col;
 	u32				num_col;
 	u32				num_unused_col;
-#define HWCTX_STAT_INIT  0
-#define HWCTX_STAT_READY 1
-#define HWCTX_STAT_STOP  2
-	u32				status;
-	u32				old_status;
 
 	struct amdxdna_qos_info		     qos;
 	struct amdxdna_hwctx_param_config_cu *cus;