From: David Zhang <yidong.zhang@amd.com>
Date: Tue, 5 May 2026 16:09:32 +0000 (-0700)
Subject: accel/amdxdna: Init AIE4 device partition
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=ce9414d0c0be7377aab5a6d3a30da5b6c032a720;p=thirdparty%2Fkernel%2Flinux.git

accel/amdxdna: Init AIE4 device partition

Send partition creation command to firmware during VF initialization.

Co-developed-by: Hayden Laccabue <Hayden.Laccabue@amd.com>
Signed-off-by: Hayden Laccabue <Hayden.Laccabue@amd.com>
Signed-off-by: David Zhang <yidong.zhang@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260505160936.3917732-3-lizhi.hou@amd.com
---

diff --git a/drivers/accel/amdxdna/aie4_msg_priv.h b/drivers/accel/amdxdna/aie4_msg_priv.h
index 88463cc3a98a..cada53257921 100644
--- a/drivers/accel/amdxdna/aie4_msg_priv.h
+++ b/drivers/accel/amdxdna/aie4_msg_priv.h
@@ -13,6 +13,9 @@ enum aie4_msg_opcode {
 
 	AIE4_MSG_OP_CREATE_VFS                       = 0x20001,
 	AIE4_MSG_OP_DESTROY_VFS                      = 0x20002,
+
+	AIE4_MSG_OP_CREATE_PARTITION                 = 0x30001,
+	AIE4_MSG_OP_DESTROY_PARTITION                = 0x30002,
 };
 
 enum aie4_msg_status {
@@ -46,4 +49,22 @@ struct aie4_msg_destroy_vfs_resp {
 	enum aie4_msg_status status;
 } __packed;
 
+struct aie4_msg_create_partition_req {
+	__u32 partition_col_start;
+	__u32 partition_col_count;
+} __packed;
+
+struct aie4_msg_create_partition_resp {
+	enum aie4_msg_status status;
+	__u32 partition_id;
+} __packed;
+
+struct aie4_msg_destroy_partition_req {
+	__u32 partition_id;
+} __packed;
+
+struct aie4_msg_destroy_partition_resp {
+	enum aie4_msg_status status;
+} __packed;
+
 #endif /* _AIE4_MSG_PRIV_H_ */
diff --git a/drivers/accel/amdxdna/aie4_pci.c b/drivers/accel/amdxdna/aie4_pci.c
index a967e2db7ebd..13f5d45e388d 100644
--- a/drivers/accel/amdxdna/aie4_pci.c
+++ b/drivers/accel/amdxdna/aie4_pci.c
@@ -9,11 +9,16 @@
 #include <linux/firmware.h>
 #include <linux/sizes.h>
 
+#include "aie.h"
+#include "aie4_msg_priv.h"
 #include "aie4_pci.h"
+#include "amdxdna_mailbox.h"
+#include "amdxdna_mailbox_helper.h"
 #include "amdxdna_pci_drv.h"
 
 #define NO_IOHUB		0
 #define PSP_NOTIFY_INTR		0xD007BE11
+#define AIE4_TOTAL_COLUMN	3
 
 /*
  * The management mailbox channel is allocated by firmware.
@@ -234,6 +239,36 @@ static int aie4_fw_start(struct amdxdna_dev_hdl *ndev)
 	return ret;
 }
 
+static int aie4_partition_init(struct amdxdna_dev_hdl *ndev)
+{
+	DECLARE_AIE_MSG(aie4_msg_create_partition, AIE4_MSG_OP_CREATE_PARTITION);
+	struct amdxdna_dev *xdna = ndev->aie.xdna;
+	int ret;
+
+	req.partition_col_start = 0;
+	req.partition_col_count = AIE4_TOTAL_COLUMN;
+	ret = aie_send_mgmt_msg_wait(&ndev->aie, &msg);
+	if (ret) {
+		XDNA_ERR(xdna, "partition init failed: %d", ret);
+		return ret;
+	}
+
+	ndev->partition_id = resp.partition_id;
+	return 0;
+}
+
+static void aie4_partition_fini(struct amdxdna_dev_hdl *ndev)
+{
+	DECLARE_AIE_MSG(aie4_msg_destroy_partition, AIE4_MSG_OP_DESTROY_PARTITION);
+	struct amdxdna_dev *xdna = ndev->aie.xdna;
+	int ret;
+
+	req.partition_id = ndev->partition_id;
+	ret = aie_send_mgmt_msg_wait(&ndev->aie, &msg);
+	if (ret)
+		XDNA_ERR(xdna, "partition fini failed: %d", ret);
+}
+
 static int aie4_pf_hw_start(struct amdxdna_dev_hdl *ndev)
 {
 	int ret;
@@ -267,7 +302,21 @@ static void aie4_pf_hw_stop(struct amdxdna_dev_hdl *ndev)
 
 static int aie4_vf_hw_start(struct amdxdna_dev_hdl *ndev)
 {
-	return aie4_mailbox_init(ndev);
+	int ret;
+
+	ret = aie4_mailbox_init(ndev);
+	if (ret)
+		return ret;
+
+	ret = aie4_partition_init(ndev);
+	if (ret)
+		goto mailbox_fini;
+
+	return 0;
+
+mailbox_fini:
+	aie4_mailbox_fini(ndev);
+	return ret;
 }
 
 static void aie4_vf_hw_stop(struct amdxdna_dev_hdl *ndev)
@@ -276,6 +325,7 @@ static void aie4_vf_hw_stop(struct amdxdna_dev_hdl *ndev)
 
 	drm_WARN_ON(&xdna->ddev, !mutex_is_locked(&xdna->dev_lock));
 
+	aie4_partition_fini(ndev);
 	aie4_mailbox_fini(ndev);
 }
 
diff --git a/drivers/accel/amdxdna/aie4_pci.h b/drivers/accel/amdxdna/aie4_pci.h
index cbf3424a4341..620fb5bd23e4 100644
--- a/drivers/accel/amdxdna/aie4_pci.h
+++ b/drivers/accel/amdxdna/aie4_pci.h
@@ -31,6 +31,7 @@ struct amdxdna_dev_hdl {
 	void			__iomem *rbuf_base;
 
 	struct mailbox			*mbox;
+	u32				partition_id;
 };
 
 /* aie4_message.c */