[PATCH 6.19 300/781] accel/amdxdna: Remove hardware context status

Greg Kroah-Hartman
2026-02-25T01:32:34Z

From: Lizhi Hou <lizhi.hou@amd.com>

[ Upstream commit b853007fdcdd64b49601a993c2b30c28279ae15d ]

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
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/accel/amdxdna/aie2_ctx.c | 25 ++-----------------------
drivers/accel/amdxdna/aie2_message.c | 3 +++
drivers/accel/amdxdna/amdxdna_ctx.h | 5 -----
3 files changed, 5 insertions(+), 28 deletions(-)

diff --git a/drivers/accel/amdxdna/aie2_ctx.c b/drivers/accel/amdxdna/aie2_ctx.c
index c4a58c00e442a..ad5b5cd0bc81f 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 273d6af9f6f52..2c5b27d90563e 100644
--- a/drivers/accel/amdxdna/aie2_message.c
+++ b/drivers/accel/amdxdna/aie2_message.c
@@ -450,6 +450,9 @@ 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 b29449a92f607..16c85f08f03c6 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;
--
2.51.0