accel/amdxdna: Add AIE4 metadata query support

Add support for querying device metadata on AIE4 via a mailbox message.
Refactor aie2_get_aie_metadata() into a common helper by moving it to
aie.c and renaming it to amdxdna_get_metadata(), allowing both AIE2
and AIE4 to reuse the implementation.

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/20260506161642.141257-1-lizhi.hou@amd.com

drivers/accel/amdxdna/aie.c

@@ -117,3 +117,17 @@ void amdxdna_vbnv_init(struct amdxdna_dev *xdna)
 
 	amdxdna_update_vbnv(xdna, info->rev_vbnv_tbl, rev);
 }
+
+int amdxdna_get_metadata(struct aie_device *aie,
+			 struct amdxdna_client *client,
+			 struct amdxdna_drm_get_info *args)
+{
+	int ret = 0;
+	u32 buf_sz;
+
+	buf_sz = min(args->buffer_size, sizeof(aie->metadata));
+	if (copy_to_user(u64_to_user_ptr(args->buffer), &aie->metadata, buf_sz))
+		ret = -EFAULT;
+
+	return ret;
+}

drivers/accel/amdxdna/aie.h

@@ -5,6 +5,7 @@
 #ifndef _AIE_H_
 #define _AIE_H_
 
+#include <drm/amdxdna_accel.h>
 #include "amdxdna_pci_drv.h"
 #include "amdxdna_mailbox.h"
 
@@ -26,6 +27,8 @@ struct aie_device {
 
 	struct psp_device *psp_hdl;
 	struct smu_device *smu_hdl;
+
+	struct amdxdna_drm_query_aie_metadata metadata;
 };
 
 #define DECLARE_AIE_MSG(name, op) \
@@ -94,6 +97,8 @@ void aie_destroy_chann(struct aie_device *aie, struct mailbox_channel **chann);
 int aie_send_mgmt_msg_wait(struct aie_device *aie, struct xdna_mailbox_msg *msg);
 int aie_check_protocol(struct aie_device *aie, u32 fw_major, u32 fw_minor);
 void amdxdna_vbnv_init(struct amdxdna_dev *xdna);
+int amdxdna_get_metadata(struct aie_device *aie, struct amdxdna_client *client,
+			 struct amdxdna_drm_get_info *args);
 
 /* aie_psp.c */
 struct psp_device *aiem_psp_create(struct drm_device *ddev, struct psp_config *conf);

drivers/accel/amdxdna/aie2_ctx.c

@@ -489,12 +489,12 @@ static int aie2_hwctx_col_list(struct amdxdna_hwctx *hwctx)
 	}
 
 	ndev = xdna->dev_handle;
-	if (unlikely(!ndev->metadata.core.row_count)) {
+	if (unlikely(!ndev->aie.metadata.core.row_count)) {
 		XDNA_WARN(xdna, "Core tile row count is zero");
 		return -EINVAL;
 	}
 
-	hwctx->num_col = hwctx->num_tiles / ndev->metadata.core.row_count;
+	hwctx->num_col = hwctx->num_tiles / ndev->aie.metadata.core.row_count;
 	if (!hwctx->num_col || hwctx->num_col > ndev->total_col) {
 		XDNA_ERR(xdna, "Invalid num_col %d", hwctx->num_col);
 		return -EINVAL;

drivers/accel/amdxdna/aie2_message.c

@@ -127,7 +127,8 @@ int aie2_assign_mgmt_pasid(struct amdxdna_dev_hdl *ndev, u16 pasid)
 	return aie_send_mgmt_msg_wait(&ndev->aie, &msg);
 }
 
-int aie2_query_aie_version(struct amdxdna_dev_hdl *ndev, struct aie_version *version)
+int aie2_query_aie_version(struct amdxdna_dev_hdl *ndev,
+			   struct amdxdna_drm_query_aie_version *version)
 {
 	DECLARE_AIE_MSG(aie_version_info, MSG_OP_QUERY_AIE_VERSION);
 	struct amdxdna_dev *xdna = ndev->aie.xdna;
@@ -146,7 +147,8 @@ int aie2_query_aie_version(struct amdxdna_dev_hdl *ndev, struct aie_version *ver
 	return 0;
 }
 
-int aie2_query_aie_metadata(struct amdxdna_dev_hdl *ndev, struct aie_metadata *metadata)
+int aie2_query_aie_metadata(struct amdxdna_dev_hdl *ndev,
+			    struct amdxdna_drm_query_aie_metadata *metadata)
 {
 	DECLARE_AIE_MSG(aie_tile_info, MSG_OP_QUERY_AIE_TILE_INFO);
 	int ret;
@@ -155,7 +157,7 @@ int aie2_query_aie_metadata(struct amdxdna_dev_hdl *ndev, struct aie_metadata *m
 	if (ret)
 		return ret;
 
-	metadata->size = resp.info.size;
+	metadata->col_size = resp.info.size;
 	metadata->cols = resp.info.cols;
 	metadata->rows = resp.info.rows;
 
@@ -375,7 +377,7 @@ int aie2_query_status(struct amdxdna_dev_hdl *ndev, char __user *buf,
 	u8 *buff_addr;
 	int ret;
 
-	buf_sz = ndev->metadata.cols * ndev->metadata.size;
+	buf_sz = ndev->aie.metadata.cols * ndev->aie.metadata.col_size;
 	buff_addr = aie2_alloc_msg_buffer(ndev, &buf_sz, &dma_addr);
 	if (IS_ERR(buff_addr))
 		return PTR_ERR(buff_addr);

drivers/accel/amdxdna/aie2_pci.c

@@ -219,13 +219,13 @@ static int aie2_mgmt_fw_query(struct amdxdna_dev_hdl *ndev)
 		return ret;
 	}
 
-	ret = aie2_query_aie_metadata(ndev, &ndev->metadata);
+	ret = aie2_query_aie_metadata(ndev, &ndev->aie.metadata);
 	if (ret) {
 		XDNA_ERR(ndev->aie.xdna, "Query AIE metadata failed");
 		return ret;
 	}
 
-	ndev->total_col = min(aie2_max_col, ndev->metadata.cols);
+	ndev->total_col = min(aie2_max_col, ndev->aie.metadata.cols);
 
 	return 0;
 }
@@ -658,53 +658,6 @@ static int aie2_get_aie_status(struct amdxdna_client *client,
 	return 0;
 }
 
-static int aie2_get_aie_metadata(struct amdxdna_client *client,
-				 struct amdxdna_drm_get_info *args)
-{
-	struct amdxdna_drm_query_aie_metadata *meta;
-	struct amdxdna_dev *xdna = client->xdna;
-	struct amdxdna_dev_hdl *ndev;
-	int ret = 0;
-	u32 buf_sz;
-
-	ndev = xdna->dev_handle;
-	meta = kzalloc_obj(*meta);
-	if (!meta)
-		return -ENOMEM;
-
-	meta->col_size = ndev->metadata.size;
-	meta->cols = ndev->metadata.cols;
-	meta->rows = ndev->metadata.rows;
-
-	meta->version.major = ndev->metadata.version.major;
-	meta->version.minor = ndev->metadata.version.minor;
-
-	meta->core.row_count = ndev->metadata.core.row_count;
-	meta->core.row_start = ndev->metadata.core.row_start;
-	meta->core.dma_channel_count = ndev->metadata.core.dma_channel_count;
-	meta->core.lock_count = ndev->metadata.core.lock_count;
-	meta->core.event_reg_count = ndev->metadata.core.event_reg_count;
-
-	meta->mem.row_count = ndev->metadata.mem.row_count;
-	meta->mem.row_start = ndev->metadata.mem.row_start;
-	meta->mem.dma_channel_count = ndev->metadata.mem.dma_channel_count;
-	meta->mem.lock_count = ndev->metadata.mem.lock_count;
-	meta->mem.event_reg_count = ndev->metadata.mem.event_reg_count;
-
-	meta->shim.row_count = ndev->metadata.shim.row_count;
-	meta->shim.row_start = ndev->metadata.shim.row_start;
-	meta->shim.dma_channel_count = ndev->metadata.shim.dma_channel_count;
-	meta->shim.lock_count = ndev->metadata.shim.lock_count;
-	meta->shim.event_reg_count = ndev->metadata.shim.event_reg_count;
-
-	buf_sz = min(args->buffer_size, sizeof(*meta));
-	if (copy_to_user(u64_to_user_ptr(args->buffer), meta, buf_sz))
-		ret = -EFAULT;
-
-	kfree(meta);
-	return ret;
-}
-
 static int aie2_get_aie_version(struct amdxdna_client *client,
 				struct amdxdna_drm_get_info *args)
 {
@@ -1039,6 +992,7 @@ static int aie2_get_preempt_state(struct amdxdna_client *client,
 static int aie2_get_info(struct amdxdna_client *client, struct amdxdna_drm_get_info *args)
 {
 	struct amdxdna_dev *xdna = client->xdna;
+	struct amdxdna_dev_hdl *ndev = xdna->dev_handle;
 	int ret, idx;
 
 	if (!drm_dev_enter(&xdna->ddev, &idx))
@@ -1053,7 +1007,7 @@ static int aie2_get_info(struct amdxdna_client *client, struct amdxdna_drm_get_i
 		ret = aie2_get_aie_status(client, args);
 		break;
 	case DRM_AMDXDNA_QUERY_AIE_METADATA:
-		ret = aie2_get_aie_metadata(client, args);
+		ret = amdxdna_get_metadata(&ndev->aie, client, args);
 		break;
 	case DRM_AMDXDNA_QUERY_AIE_VERSION:
 		ret = aie2_get_aie_version(client, args);

drivers/accel/amdxdna/aie2_pci.h

@@ -77,29 +77,6 @@ struct amdxdna_fw_ver;
 struct amdxdna_hwctx;
 struct amdxdna_sched_job;
 
-struct aie_version {
-	u16 major;
-	u16 minor;
-};
-
-struct aie_tile_metadata {
-	u16 row_count;
-	u16 row_start;
-	u16 dma_channel_count;
-	u16 lock_count;
-	u16 event_reg_count;
-};
-
-struct aie_metadata {
-	u32 size;
-	u16 cols;
-	u16 rows;
-	struct aie_version version;
-	struct aie_tile_metadata core;
-	struct aie_tile_metadata mem;
-	struct aie_tile_metadata shim;
-};
-
 enum rt_config_category {
 	AIE2_RT_CFG_INIT,
 	AIE2_RT_CFG_CLK_GATING,
@@ -177,8 +154,7 @@ struct amdxdna_dev_hdl {
 	void			__iomem *mbox_base;
 
 	u32				total_col;
-	struct aie_version		version;
-	struct aie_metadata		metadata;
+	struct amdxdna_drm_query_aie_version version;
 	struct aie2_exec_msg_ops	*exec_msg_ops;
 
 	/* power management and clock*/
@@ -283,8 +259,10 @@ int aie2_resume_fw(struct amdxdna_dev_hdl *ndev);
 int aie2_set_runtime_cfg(struct amdxdna_dev_hdl *ndev, u32 type, u64 value);
 int aie2_get_runtime_cfg(struct amdxdna_dev_hdl *ndev, u32 type, u64 *value);
 int aie2_assign_mgmt_pasid(struct amdxdna_dev_hdl *ndev, u16 pasid);
-int aie2_query_aie_version(struct amdxdna_dev_hdl *ndev, struct aie_version *version);
-int aie2_query_aie_metadata(struct amdxdna_dev_hdl *ndev, struct aie_metadata *metadata);
+int aie2_query_aie_version(struct amdxdna_dev_hdl *ndev,
+			   struct amdxdna_drm_query_aie_version *version);
+int aie2_query_aie_metadata(struct amdxdna_dev_hdl *ndev,
+			    struct amdxdna_drm_query_aie_metadata *metadata);
 int aie2_query_firmware_version(struct amdxdna_dev_hdl *ndev,
 				struct amdxdna_fw_ver *fw_ver);
 int aie2_query_app_health(struct amdxdna_dev_hdl *ndev, u32 context_id,

drivers/accel/amdxdna/aie4_message.c

@@ -25,3 +25,41 @@ int aie4_suspend_fw(struct amdxdna_dev_hdl *ndev)
 
 	return ret;
 }
+
+int aie4_query_aie_metadata(struct amdxdna_dev_hdl *ndev,
+			    struct amdxdna_drm_query_aie_metadata *metadata)
+{
+	DECLARE_AIE_MSG(aie4_msg_aie4_tile_info, AIE4_MSG_OP_AIE_TILE_INFO);
+	int ret;
+
+	ret = aie_send_mgmt_msg_wait(&ndev->aie, &msg);
+	if (ret)
+		return ret;
+
+	metadata->col_size = resp.info.size;
+	metadata->cols = resp.info.cols;
+	metadata->rows = resp.info.rows;
+
+	metadata->version.major = resp.info.major;
+	metadata->version.minor = resp.info.minor;
+
+	metadata->core.row_count = resp.info.core_rows;
+	metadata->core.row_start = resp.info.core_row_start;
+	metadata->core.dma_channel_count = resp.info.core_dma_channels;
+	metadata->core.lock_count = resp.info.core_locks;
+	metadata->core.event_reg_count = resp.info.core_events;
+
+	metadata->mem.row_count = resp.info.mem_rows;
+	metadata->mem.row_start = resp.info.mem_row_start;
+	metadata->mem.dma_channel_count = resp.info.mem_dma_channels;
+	metadata->mem.lock_count = resp.info.mem_locks;
+	metadata->mem.event_reg_count = resp.info.mem_events;
+
+	metadata->shim.row_count = resp.info.shim_rows;
+	metadata->shim.row_start = resp.info.shim_row_start;
+	metadata->shim.dma_channel_count = resp.info.shim_dma_channels;
+	metadata->shim.lock_count = resp.info.shim_locks;
+	metadata->shim.event_reg_count = resp.info.shim_events;
+
+	return 0;
+}

drivers/accel/amdxdna/aie4_msg_priv.h

@@ -18,6 +18,7 @@ enum aie4_msg_opcode {
 	AIE4_MSG_OP_DESTROY_PARTITION                = 0x30002,
 	AIE4_MSG_OP_CREATE_HW_CONTEXT                = 0x30003,
 	AIE4_MSG_OP_DESTROY_HW_CONTEXT               = 0x30004,
+	AIE4_MSG_OP_AIE_TILE_INFO                    = 0x30006,
 };
 
 enum aie4_msg_status {
@@ -96,4 +97,37 @@ struct aie4_msg_destroy_hw_context_resp {
 	enum aie4_msg_status status;
 } __packed;
 
+struct aie4_tile_info {
+	__u32 size;
+	__u16 major;
+	__u16 minor;
+	__u16 cols;
+	__u16 rows;
+	__u16 core_rows;
+	__u16 mem_rows;
+	__u16 shim_rows;
+	__u16 core_row_start;
+	__u16 mem_row_start;
+	__u16 shim_row_start;
+	__u16 core_dma_channels;
+	__u16 mem_dma_channels;
+	__u16 shim_dma_channels;
+	__u16 core_locks;
+	__u16 mem_locks;
+	__u16 shim_locks;
+	__u16 core_events;
+	__u16 mem_events;
+	__u16 shim_events;
+	__u16 resvd;
+} __packed;
+
+struct aie4_msg_aie4_tile_info_req {
+	__u32 resvd;
+} __packed;
+
+struct aie4_msg_aie4_tile_info_resp {
+	enum aie4_msg_status status;
+	struct aie4_tile_info info;
+} __packed;
+
 #endif /* _AIE4_MSG_PRIV_H_ */

drivers/accel/amdxdna/aie4_pci.c

@@ -269,6 +269,11 @@ static void aie4_partition_fini(struct amdxdna_dev_hdl *ndev)
 		XDNA_ERR(xdna, "partition fini failed: %d", ret);
 }
 
+static int aie4_query(struct amdxdna_dev_hdl *ndev)
+{
+	return aie4_query_aie_metadata(ndev, &ndev->aie.metadata);
+}
+
 static int aie4_pf_hw_start(struct amdxdna_dev_hdl *ndev)
 {
 	int ret;
@@ -308,6 +313,10 @@ static int aie4_vf_hw_start(struct amdxdna_dev_hdl *ndev)
 	if (ret)
 		return ret;
 
+	ret = aie4_query(ndev);
+	if (ret)
+		goto mailbox_fini;
+
 	ret = aie4_partition_init(ndev);
 	if (ret)
 		goto mailbox_fini;
@@ -535,6 +544,26 @@ static int aie4_doorbell_mmap(struct amdxdna_client *client, struct vm_area_stru
 	return ret;
 }
 
+static int aie4_get_info(struct amdxdna_client *client, struct amdxdna_drm_get_info *args)
+{
+	struct amdxdna_dev *xdna = client->xdna;
+	struct amdxdna_dev_hdl *ndev = xdna->dev_handle;
+	int ret;
+
+	switch (args->param) {
+	case DRM_AMDXDNA_QUERY_AIE_METADATA:
+		ret = amdxdna_get_metadata(&ndev->aie, client, args);
+		break;
+	default:
+		XDNA_ERR(xdna, "Not supported request parameter %u", args->param);
+		ret = -EOPNOTSUPP;
+	}
+
+	XDNA_DBG(xdna, "Got param %d", args->param);
+
+	return ret;
+}
+
 static int aie4_pf_init(struct amdxdna_dev *xdna)
 {
 	int ret;
@@ -581,4 +610,5 @@ const struct amdxdna_dev_ops aie4_vf_ops = {
 	.hwctx_fini		= aie4_hwctx_fini,
 	.mmap			= aie4_doorbell_mmap,
 	.cmd_wait		= aie4_cmd_wait,
+	.get_aie_info		= aie4_get_info,
 };

drivers/accel/amdxdna/aie4_pci.h

@@ -56,6 +56,8 @@ struct amdxdna_dev_hdl {
 };
 
 /* aie4_message.c */
+int aie4_query_aie_metadata(struct amdxdna_dev_hdl *ndev,
+			    struct amdxdna_drm_query_aie_metadata *metadata);
 int aie4_suspend_fw(struct amdxdna_dev_hdl *ndev);
 
 /* aie4_ctx.c */