[PATCH V0 21/21] accel/amdxdna: Add stub hwctx_config for AIE4

[David Zhang <yidong.zhang@amd.com>]

XRT issues DRM_AMDXDNA_CONFIG_HWCTX during hardware context
initialization. If hwctx_config is NULL, the ioctl returns -EOPNOTSUPP,
causing userspace validation tests like GEMM to fail.

Add a stub aie4_hwctx_config() returning 0 and wire it to aie4_vf_ops
and aie4_classic_ops.

Signed-off-by: David Zhang <yidong.zhang@amd.com>
---
 drivers/accel/amdxdna/aie4_pci.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/accel/amdxdna/aie4_pci.c b/drivers/accel/amdxdna/aie4_pci.c
index 28ac7940b200..5a94d41ae5f8 100644
--- a/drivers/accel/amdxdna/aie4_pci.c
+++ b/drivers/accel/amdxdna/aie4_pci.c
@@ -1368,12 +1368,19 @@ const struct amdxdna_dev_ops aie4_pf_ops = {
 	.runtime_suspend	= aie4_pf_runtime_suspend,
 };
 
+static int aie4_hwctx_config(struct amdxdna_hwctx *hwctx, u32 type, u64 value,
+			     void *buf, u32 size)
+{
+	return 0;
+}
+
 const struct amdxdna_dev_ops aie4_vf_ops = {
 	.init			= aie4_vf_init,
 	.fini			= aie4_vf_fini,
 	.debugfs_init		= aie4_debugfs_init,
 	.hwctx_init		= aie4_hwctx_init,
 	.hwctx_fini		= aie4_hwctx_fini,
+	.hwctx_config		= aie4_hwctx_config,
 	.cmd_submit		= aie4_cmd_submit,
 	.cmd_wait		= aie4_cmd_wait,
 	.get_aie_info		= aie4_get_info,
@@ -1390,6 +1397,7 @@ const struct amdxdna_dev_ops aie4_classic_ops = {
 	.debugfs_init		= aie4_debugfs_init,
 	.hwctx_init		= aie4_hwctx_init,
 	.hwctx_fini		= aie4_hwctx_fini,
+	.hwctx_config		= aie4_hwctx_config,
 	.cmd_submit		= aie4_cmd_submit,
 	.cmd_wait		= aie4_cmd_wait,
 	.get_aie_info		= aie4_get_info,
-- 
2.34.1