On 10/30/25 22:10, Mario Limonciello (AMD) (kernel.org) wrote:


On 10/30/2025 8:47 PM, Lizhi Hou wrote:
MSG_OP_CHAIN_EXEC_NPU is a unified mailbox message that replaces
MSG_OP_CHAIN_EXEC_BUFFER_CF and MSG_OP_CHAIN_EXEC_DPU.

Add driver logic to check firmware version, and if MSG_OP_CHAIN_EXEC_NPU
is supported, uses it to submit firmware commands.

Signed-off-by: Lizhi Hou <[email protected]>

Two small nits below to me.  Otherwise

Reviewed-by: Mario Limonciello (AMD) <[email protected]>

Thanks a lot. And I will fix the nits when I merge.


Lizhi


---
  drivers/accel/amdxdna/aie2_message.c  | 443 +++++++++++++++++---------
  drivers/accel/amdxdna/aie2_msg_priv.h |  42 ++-
  drivers/accel/amdxdna/aie2_pci.c      |  13 +
  drivers/accel/amdxdna/aie2_pci.h      |  29 ++
  drivers/accel/amdxdna/amdxdna_ctx.c   |   6 +-
  drivers/accel/amdxdna/amdxdna_ctx.h   |  11 +-
  drivers/accel/amdxdna/npu1_regs.c     |   6 +
  drivers/accel/amdxdna/npu2_regs.c     |   1 +
  drivers/accel/amdxdna/npu4_regs.c     |   6 +
  drivers/accel/amdxdna/npu5_regs.c     |   1 +
  drivers/accel/amdxdna/npu6_regs.c     |   1 +
  11 files changed, 392 insertions(+), 167 deletions(-)

diff --git a/drivers/accel/amdxdna/aie2_message.c b/drivers/accel/amdxdna/aie2_message.c
index 3a4c845d783a..4751a8aff0f7 100644
--- a/drivers/accel/amdxdna/aie2_message.c
+++ b/drivers/accel/amdxdna/aie2_message.c
@@ -27,6 +27,8 @@
  #define DECLARE_AIE2_MSG(name, op) \
      DECLARE_XDNA_MSG_COMMON(name, op, MAX_AIE2_STATUS_CODE)
  +#define EXEC_MSG_OPS(xdna) ((xdna)->dev_handle->exec_msg_ops)
+
  static int aie2_send_mgmt_msg_wait(struct amdxdna_dev_hdl *ndev,
                     struct xdna_mailbox_msg *msg)
  {
@@ -479,177 +481,291 @@ int aie2_config_cu(struct amdxdna_hwctx *hwctx,
      return xdna_mailbox_send_msg(chann, &msg, TX_TIMEOUT);
  }
  -int aie2_execbuf(struct amdxdna_hwctx *hwctx, struct amdxdna_sched_job *job,
-         int (*notify_cb)(void *, void __iomem *, size_t))
+static int aie2_init_exec_cu_req(struct amdxdna_gem_obj *cmd_bo, void *req,
+                 size_t *size, u32 *msg_op)
  {
-    struct mailbox_channel *chann = hwctx->priv->mbox_chann;
-    struct amdxdna_dev *xdna = hwctx->client->xdna;
-    struct amdxdna_gem_obj *cmd_abo = job->cmd_bo;
-    union {
-        struct execute_buffer_req ebuf;
-        struct exec_dpu_req dpu;
-    } req;
-    struct xdna_mailbox_msg msg;
-    u32 payload_len;
-    void *payload;
-    int cu_idx;
-    int ret;
-    u32 op;
+    struct execute_buffer_req *cu_req = req;
+    u32 cmd_len;
+    void *cmd;
  -    if (!chann)
-        return -ENODEV;
+    cmd = amdxdna_cmd_get_payload(cmd_bo, &cmd_len);
+    if (cmd_len > sizeof(cu_req->payload))
+        return -EINVAL;
  -    payload = amdxdna_cmd_get_payload(cmd_abo, &payload_len);
-    if (!payload) {
-        XDNA_ERR(xdna, "Invalid command, cannot get payload");
+    cu_req->cu_idx = amdxdna_cmd_get_cu_idx(cmd_bo);
+    if (cu_req->cu_idx == INVALID_CU_IDX)
          return -EINVAL;
-    }
  -    cu_idx = amdxdna_cmd_get_cu_idx(cmd_abo);
-    if (cu_idx < 0) {
-        XDNA_DBG(xdna, "Invalid cu idx");
+    memcpy(cu_req->payload, cmd, cmd_len);
+
+    *size = sizeof(*cu_req);
+    *msg_op = MSG_OP_EXECUTE_BUFFER_CF;
+    return 0;
+}
+
+static int aie2_init_exec_dpu_req(struct amdxdna_gem_obj *cmd_bo, void *req,
+                  size_t *size, u32 *msg_op)
+{
+    struct exec_dpu_req *dpu_req = req;
+    struct amdxdna_cmd_start_npu *sn;
+    u32 cmd_len;
+
+    sn = amdxdna_cmd_get_payload(cmd_bo, &cmd_len);
+    if (cmd_len - sizeof(*sn) > sizeof(dpu_req->payload))
          return -EINVAL;
-    }
  -    op = amdxdna_cmd_get_op(cmd_abo);
-    switch (op) {
-    case ERT_START_CU:
-        if (unlikely(payload_len > sizeof(req.ebuf.payload)))
-            XDNA_DBG(xdna, "Invalid ebuf payload len: %d", payload_len);
-        req.ebuf.cu_idx = cu_idx;
-        memcpy(req.ebuf.payload, payload, sizeof(req.ebuf.payload));
-        msg.send_size = sizeof(req.ebuf);
-        msg.opcode = MSG_OP_EXECUTE_BUFFER_CF;
-        break;
-    case ERT_START_NPU: {
-        struct amdxdna_cmd_start_npu *sn = payload;
-
-        if (unlikely(payload_len - sizeof(*sn) > sizeof(req.dpu.payload)))
-            XDNA_DBG(xdna, "Invalid dpu payload len: %d", payload_len);
-        req.dpu.inst_buf_addr = sn->buffer;
-        req.dpu.inst_size = sn->buffer_size;
-        req.dpu.inst_prop_cnt = sn->prop_count;
-        req.dpu.cu_idx = cu_idx;
-        memcpy(req.dpu.payload, sn->prop_args, sizeof(req.dpu.payload));
-        msg.send_size = sizeof(req.dpu);
-        msg.opcode = MSG_OP_EXEC_DPU;
-        break;
-    }
-    default:
-        XDNA_DBG(xdna, "Invalid ERT cmd op code: %d", op);
+    dpu_req->cu_idx = amdxdna_cmd_get_cu_idx(cmd_bo);
+    if (dpu_req->cu_idx == INVALID_CU_IDX)
          return -EINVAL;
-    }
-    msg.handle = job;
-    msg.notify_cb = notify_cb;
-    msg.send_data = (u8 *)&req;
-    print_hex_dump_debug("cmd: ", DUMP_PREFIX_OFFSET, 16, 4, &req,
-                 0x40, false);
  -    ret = xdna_mailbox_send_msg(chann, &msg, TX_TIMEOUT);
-    if (ret) {
-        XDNA_ERR(xdna, "Send message failed");
-        return ret;
-    }
+    dpu_req->inst_buf_addr = sn->buffer;
+    dpu_req->inst_size = sn->buffer_size;
+    dpu_req->inst_prop_cnt = sn->prop_count;
+    memcpy(dpu_req->payload, sn->prop_args, cmd_len - sizeof(*sn));
  +    *size = sizeof(*dpu_req);
+    *msg_op = MSG_OP_EXEC_DPU;
      return 0;
  }
  +static void aie2_init_exec_chain_req(void *req, u64 slot_addr, size_t size, u32 cmd_cnt)
+{
+    struct cmd_chain_req *chain_req = req;
+
+    chain_req->buf_addr = slot_addr;
+    chain_req->buf_size = size;
+    chain_req->count = cmd_cnt;
+}
+
+static void aie2_init_npu_chain_req(void *req, u64 slot_addr, size_t size, u32 cmd_cnt)
+{
+    struct cmd_chain_npu_req *npu_chain_req = req;
+
+    npu_chain_req->flags = 0;
+    npu_chain_req->reserved = 0;
+    npu_chain_req->buf_addr = slot_addr;
+    npu_chain_req->buf_size = size;
+    npu_chain_req->count = cmd_cnt;
+}
+
  static int
-aie2_cmdlist_fill_one_slot_cf(void *cmd_buf, u32 offset,
-                  struct amdxdna_gem_obj *abo, u32 *size)
+aie2_cmdlist_fill_cf(struct amdxdna_gem_obj *cmd_bo, void *slot, size_t *size)
  {
-    struct cmd_chain_slot_execbuf_cf *buf = cmd_buf + offset;
-    int cu_idx = amdxdna_cmd_get_cu_idx(abo);
-    u32 payload_len;
-    void *payload;
+    struct cmd_chain_slot_execbuf_cf *cf_slot = slot;
+    u32 cmd_len;
+    void *cmd;
  -    if (cu_idx < 0)
+    cmd = amdxdna_cmd_get_payload(cmd_bo, &cmd_len);
+    if (*size < sizeof(*cf_slot) + cmd_len)
          return -EINVAL;
  -    payload = amdxdna_cmd_get_payload(abo, &payload_len);
-    if (!payload)
+    cf_slot->cu_idx = amdxdna_cmd_get_cu_idx(cmd_bo);
+    if (cf_slot->cu_idx == INVALID_CU_IDX)
          return -EINVAL;
  -    if (!slot_has_space(*buf, offset, payload_len))
-        return -ENOSPC;
-
-    buf->cu_idx = cu_idx;
-    buf->arg_cnt = payload_len / sizeof(u32);
-    memcpy(buf->args, payload, payload_len);
-    /* Accurate buf size to hint firmware to do necessary copy */
-    *size = sizeof(*buf) + payload_len;
+    cf_slot->arg_cnt = cmd_len / sizeof(u32);
+    memcpy(cf_slot->args, cmd, cmd_len);
+    /* Accurate slot size to hint firmware to do necessary copy */
+    *size = sizeof(*cf_slot) + cmd_len;
      return 0;
  }
    static int
-aie2_cmdlist_fill_one_slot_dpu(void *cmd_buf, u32 offset,
-                   struct amdxdna_gem_obj *abo, u32 *size)
+aie2_cmdlist_fill_dpu(struct amdxdna_gem_obj *cmd_bo, void *slot, size_t *size)
  {
-    struct cmd_chain_slot_dpu *buf = cmd_buf + offset;
-    int cu_idx = amdxdna_cmd_get_cu_idx(abo);
+    struct cmd_chain_slot_dpu *dpu_slot = slot;
      struct amdxdna_cmd_start_npu *sn;
-    u32 payload_len;
-    void *payload;
+    u32 cmd_len;
      u32 arg_sz;
  -    if (cu_idx < 0)
+    sn = amdxdna_cmd_get_payload(cmd_bo, &cmd_len);
+    arg_sz = cmd_len - sizeof(*sn);
+    if (cmd_len < sizeof(*sn) || arg_sz > MAX_DPU_ARGS_SIZE)
          return -EINVAL;
  -    payload = amdxdna_cmd_get_payload(abo, &payload_len);
-    if (!payload)
+    if (*size < sizeof(*dpu_slot) + arg_sz)
          return -EINVAL;
-    sn = payload;
-    arg_sz = payload_len - sizeof(*sn);
-    if (payload_len < sizeof(*sn) || arg_sz > MAX_DPU_ARGS_SIZE)
+
+    dpu_slot->cu_idx = amdxdna_cmd_get_cu_idx(cmd_bo);
+    if (dpu_slot->cu_idx == INVALID_CU_IDX)
          return -EINVAL;
  -    if (!slot_has_space(*buf, offset, arg_sz))
-        return -ENOSPC;
+    dpu_slot->inst_buf_addr = sn->buffer;
+    dpu_slot->inst_size = sn->buffer_size;
+    dpu_slot->inst_prop_cnt = sn->prop_count;
+    dpu_slot->arg_cnt = arg_sz / sizeof(u32);
+    memcpy(dpu_slot->args, sn->prop_args, arg_sz);
+
+    /* Accurate slot size to hint firmware to do necessary copy */
+    *size = sizeof(*dpu_slot) + arg_sz;
+    return 0;
+}
+
+static u32 aie2_get_chain_msg_op(u32 cmd_op)
+{
+    switch (cmd_op) {
+    case ERT_START_CU:
+        return MSG_OP_CHAIN_EXEC_BUFFER_CF;
+    case ERT_START_NPU:
+        return MSG_OP_CHAIN_EXEC_DPU;
+    default:
+        break;
+    }
  -    buf->inst_buf_addr = sn->buffer;
-    buf->inst_size = sn->buffer_size;
-    buf->inst_prop_cnt = sn->prop_count;
-    buf->cu_idx = cu_idx;
-    buf->arg_cnt = arg_sz / sizeof(u32);
-    memcpy(buf->args, sn->prop_args, arg_sz);
+    return MSG_OP_MAX_OPCODE;
+}
  -    /* Accurate buf size to hint firmware to do necessary copy */
-    *size = sizeof(*buf) + arg_sz;
+static struct aie2_exec_msg_ops legacy_exec_message_ops = {
+    .init_cu_req = aie2_init_exec_cu_req,
+    .init_dpu_req = aie2_init_exec_dpu_req,
+    .init_chain_req = aie2_init_exec_chain_req,
+    .fill_cf_slot = aie2_cmdlist_fill_cf,
+    .fill_dpu_slot = aie2_cmdlist_fill_dpu,
+    .get_chain_msg_op = aie2_get_chain_msg_op,
+};
+
+static int
+aie2_cmdlist_fill_npu_cf(struct amdxdna_gem_obj *cmd_bo, void *slot, size_t *size)
+{
+    struct cmd_chain_slot_npu *npu_slot = slot;
+    u32 cmd_len;
+    void *cmd;
+
+    cmd = amdxdna_cmd_get_payload(cmd_bo, &cmd_len);
+    if (*size < sizeof(*npu_slot) + cmd_len)
+        return -EINVAL;
+
+    npu_slot->cu_idx = amdxdna_cmd_get_cu_idx(cmd_bo);
+    if (npu_slot->cu_idx == INVALID_CU_IDX)
+        return -EINVAL;
+
+    memset(npu_slot, 0, sizeof(*npu_slot));
+    npu_slot->type = EXEC_NPU_TYPE_NON_ELF;
+    npu_slot->arg_cnt = cmd_len / sizeof(u32);
+    memcpy(npu_slot->args, cmd, cmd_len);
+
+    *size = sizeof(*npu_slot) + cmd_len;
      return 0;
  }
    static int
-aie2_cmdlist_fill_one_slot(u32 op, struct amdxdna_gem_obj *cmdbuf_abo, u32 offset,
-               struct amdxdna_gem_obj *abo, u32 *size)
+aie2_cmdlist_fill_npu_dpu(struct amdxdna_gem_obj *cmd_bo, void *slot, size_t *size)
+{
+    struct cmd_chain_slot_npu *npu_slot = slot;
+    struct amdxdna_cmd_start_npu *sn;
+    u32 cmd_len;
+    u32 arg_sz;
+
+    sn = amdxdna_cmd_get_payload(cmd_bo, &cmd_len);
+    arg_sz = cmd_len - sizeof(*sn);
+    if (cmd_len < sizeof(*sn) || arg_sz > MAX_NPU_ARGS_SIZE)
+        return -EINVAL;
+
+    if (*size < sizeof(*npu_slot) + arg_sz)
+        return -EINVAL;
+
+    npu_slot->cu_idx = amdxdna_cmd_get_cu_idx(cmd_bo);
+    if (npu_slot->cu_idx == INVALID_CU_IDX)
+        return -EINVAL;
+
+    memset(npu_slot, 0, sizeof(*npu_slot));
+    npu_slot->type = EXEC_NPU_TYPE_PARTIAL_ELF;
+    npu_slot->inst_buf_addr = sn->buffer;
+    npu_slot->inst_size = sn->buffer_size;
+    npu_slot->inst_prop_cnt = sn->prop_count;
+    npu_slot->arg_cnt = arg_sz / sizeof(u32);
+    memcpy(npu_slot->args, sn->prop_args, arg_sz);
+
+    *size = sizeof(*npu_slot) + arg_sz;
+    return 0;
+}
+
+static u32 aie2_get_npu_chain_msg_op(u32 cmd_op)
+{
+    return MSG_OP_CHAIN_EXEC_NPU;
+}
+
+static struct aie2_exec_msg_ops npu_exec_message_ops = {
+    .init_cu_req = aie2_init_exec_cu_req,
+    .init_dpu_req = aie2_init_exec_dpu_req,
+    .init_chain_req = aie2_init_npu_chain_req,
+    .fill_cf_slot = aie2_cmdlist_fill_npu_cf,
+    .fill_dpu_slot = aie2_cmdlist_fill_npu_dpu,
+    .get_chain_msg_op = aie2_get_npu_chain_msg_op,
+};
+
+static int aie2_init_exec_req(void *req, struct amdxdna_gem_obj *cmd_abo,
+                  size_t *size, u32 *msg_op)
  {
-    u32 this_op = amdxdna_cmd_get_op(abo);
-    void *cmd_buf = cmdbuf_abo->mem.kva;
+    struct amdxdna_dev *xdna = cmd_abo->client->xdna;
      int ret;
+    u32 op;
  -    if (this_op != op) {
-        ret = -EINVAL;
-        goto done;
-    }
  +    op = amdxdna_cmd_get_op(cmd_abo);
      switch (op) {
      case ERT_START_CU:
-        ret = aie2_cmdlist_fill_one_slot_cf(cmd_buf, offset, abo, size); +        ret = EXEC_MSG_OPS(xdna)->init_cu_req(cmd_abo, req, size, msg_op);
+        if (ret) {
+            XDNA_DBG(xdna, "Init CU req failed ret %d", ret);
+            return ret;
+        }
          break;
      case ERT_START_NPU:
-        ret = aie2_cmdlist_fill_one_slot_dpu(cmd_buf, offset, abo, size); +        ret = EXEC_MSG_OPS(xdna)->init_dpu_req(cmd_abo, req, size, msg_op);
+        if (ret) {
+            XDNA_DBG(xdna, "Init DPU req failed ret %d", ret);
+            return ret;
+        }
+
          break;
      default:
+        XDNA_INFO(xdna, "Unsupported op %d", op);

Shouldn't this be XDNA_ERR()?

          ret = -EOPNOTSUPP;
+        break;
      }
  -done:
-    if (ret) {
-        XDNA_ERR(abo->client->xdna, "Can't fill slot for cmd op %d ret %d",
-             op, ret);
+    return ret;
+}
+
+static int
+aie2_cmdlist_fill_slot(void *slot, struct amdxdna_gem_obj *cmd_abo,
+               size_t *size, u32 *cmd_op)
+{
+    struct amdxdna_dev *xdna = cmd_abo->client->xdna;
+    int ret;
+    u32 op;
+
+    op = amdxdna_cmd_get_op(cmd_abo);
+    if (*cmd_op == ERT_INVALID_CMD)
+        *cmd_op = op;
+    else if (op != *cmd_op)
+        return -EINVAL;
+
+    switch (op) {
+    case ERT_START_CU:
+        ret = EXEC_MSG_OPS(xdna)->fill_cf_slot(cmd_abo, slot, size);
+        break;
+    case ERT_START_NPU:
+        ret = EXEC_MSG_OPS(xdna)->fill_dpu_slot(cmd_abo, slot, size);
+        break;
+    default:
+        XDNA_INFO(xdna, "Unsupported op %d", op);
+        ret = -EOPNOTSUPP;
+        break;
      }
+
      return ret;
  }
  +void aie2_msg_init(struct amdxdna_dev_hdl *ndev)
+{
+    if (AIE2_FEATURE_ON(ndev, AIE2_NPU_COMMAND))
+        ndev->exec_msg_ops = &npu_exec_message_ops;
+    else
+        ndev->exec_msg_ops = &legacy_exec_message_ops;
+}
+
  static inline struct amdxdna_gem_obj *
  aie2_cmdlist_get_cmd_buf(struct amdxdna_sched_job *job)
  {
@@ -658,29 +774,36 @@ aie2_cmdlist_get_cmd_buf(struct amdxdna_sched_job *job)
      return job->hwctx->priv->cmd_buf[idx];
  }
  -static void
-aie2_cmdlist_prepare_request(struct cmd_chain_req *req,
-                 struct amdxdna_gem_obj *cmdbuf_abo, u32 size, u32 cnt)
+int aie2_execbuf(struct amdxdna_hwctx *hwctx, struct amdxdna_sched_job *job,
+         int (*notify_cb)(void *, void __iomem *, size_t))
  {
-    req->buf_addr = cmdbuf_abo->mem.dev_addr;
-    req->buf_size = size;
-    req->count = cnt;
-    drm_clflush_virt_range(cmdbuf_abo->mem.kva, size);
-    XDNA_DBG(cmdbuf_abo->client->xdna, "Command buf addr 0x%llx size 0x%x count %d",
-         req->buf_addr, size, cnt);
-}
+    struct mailbox_channel *chann = hwctx->priv->mbox_chann;
+    struct amdxdna_dev *xdna = hwctx->client->xdna;
+    struct amdxdna_gem_obj *cmd_abo = job->cmd_bo;
+    struct xdna_mailbox_msg msg;
+    union exec_req req;
+    int ret;
  -static inline u32
-aie2_cmd_op_to_msg_op(u32 op)
-{
-    switch (op) {
-    case ERT_START_CU:
-        return MSG_OP_CHAIN_EXEC_BUFFER_CF;
-    case ERT_START_NPU:
-        return MSG_OP_CHAIN_EXEC_DPU;
-    default:
-        return MSG_OP_MAX_OPCODE;
+    if (!chann)
+        return -ENODEV;
+
+    ret = aie2_init_exec_req(&req, cmd_abo, &msg.send_size, &msg.opcode);
+    if (ret)
+        return ret;
+
+    msg.handle = job;
+    msg.notify_cb = notify_cb;
+    msg.send_data = (u8 *)&req;
+    print_hex_dump_debug("cmd: ", DUMP_PREFIX_OFFSET, 16, 4, &req,
+                 0x40, false);
+
+    ret = xdna_mailbox_send_msg(chann, &msg, TX_TIMEOUT);
+    if (ret) {
+        XDNA_ERR(xdna, "Send message failed");
+        return ret;
      }
+
+    return 0;
  }
    int aie2_cmdlist_multi_execbuf(struct amdxdna_hwctx *hwctx,
@@ -691,12 +814,13 @@ int aie2_cmdlist_multi_execbuf(struct amdxdna_hwctx *hwctx,
      struct mailbox_channel *chann = hwctx->priv->mbox_chann;
      struct amdxdna_client *client = hwctx->client;
      struct amdxdna_gem_obj *cmd_abo = job->cmd_bo;
+    struct amdxdna_dev *xdna = client->xdna;
      struct amdxdna_cmd_chain *payload;
      struct xdna_mailbox_msg msg;
-    struct cmd_chain_req req;
+    union exec_chain_req req;
      u32 payload_len;
      u32 offset = 0;
-    u32 size;
+    size_t size;
      int ret;
      u32 op;
      u32 i;
@@ -707,41 +831,42 @@ int aie2_cmdlist_multi_execbuf(struct amdxdna_hwctx *hwctx,           payload_len < struct_size(payload, data, payload->command_count))
          return -EINVAL;
  +    op = ERT_INVALID_CMD;
      for (i = 0; i < payload->command_count; i++) {
          u32 boh = (u32)(payload->data[i]);
          struct amdxdna_gem_obj *abo;
            abo = amdxdna_gem_get_obj(client, boh, AMDXDNA_BO_CMD);
          if (!abo) {
-            XDNA_ERR(client->xdna, "Failed to find cmd BO %d", boh);
+            XDNA_ERR(xdna, "Failed to find cmd BO %d", boh);
              return -ENOENT;
          }
  -        /* All sub-cmd should have same op, use the first one. */
-        if (i == 0)
-            op = amdxdna_cmd_get_op(abo);
-
-        ret = aie2_cmdlist_fill_one_slot(op, cmdbuf_abo, offset, abo, &size);
+        size = cmdbuf_abo->mem.size - offset;
+        ret = aie2_cmdlist_fill_slot(cmdbuf_abo->mem.kva + offset,
+                         abo, &size, &op);
          amdxdna_gem_put_obj(abo);
          if (ret)
-            return -EINVAL;
+            return ret;
            offset += size;
      }
+    msg.opcode = EXEC_MSG_OPS(xdna)->get_chain_msg_op(op);
+    if (msg.opcode == MSG_OP_MAX_OPCODE)
+        return -EOPNOTSUPP;
        /* The offset is the accumulated total size of the cmd buffer */
-    aie2_cmdlist_prepare_request(&req, cmdbuf_abo, offset, payload->command_count);
+    EXEC_MSG_OPS(xdna)->init_chain_req(&req, cmdbuf_abo->mem.dev_addr,
+                       offset, payload->command_count);
+    drm_clflush_virt_range(cmdbuf_abo->mem.kva, offset);
  -    msg.opcode = aie2_cmd_op_to_msg_op(op);
-    if (msg.opcode == MSG_OP_MAX_OPCODE)
-        return -EOPNOTSUPP;
      msg.handle = job;
      msg.notify_cb = notify_cb;
      msg.send_data = (u8 *)&req;
      msg.send_size = sizeof(req);
      ret = xdna_mailbox_send_msg(chann, &msg, TX_TIMEOUT);
      if (ret) {
-        XDNA_ERR(hwctx->client->xdna, "Send message failed");
+        XDNA_ERR(xdna, "Send message failed");
          return ret;
      }
  @@ -754,23 +879,27 @@ int aie2_cmdlist_single_execbuf(struct amdxdna_hwctx *hwctx,
  {
      struct amdxdna_gem_obj *cmdbuf_abo = aie2_cmdlist_get_cmd_buf(job);
      struct mailbox_channel *chann = hwctx->priv->mbox_chann;
+    struct amdxdna_dev *xdna = hwctx->client->xdna;
      struct amdxdna_gem_obj *cmd_abo = job->cmd_bo;
      struct xdna_mailbox_msg msg;
-    struct cmd_chain_req req;
-    u32 size;
+    union exec_chain_req req;
+    u32 op = ERT_INVALID_CMD;
+    size_t size;
      int ret;
-    u32 op;
  -    op = amdxdna_cmd_get_op(cmd_abo);
-    ret = aie2_cmdlist_fill_one_slot(op, cmdbuf_abo, 0, cmd_abo, &size);
+    size = cmdbuf_abo->mem.size;
+    ret = aie2_cmdlist_fill_slot(cmdbuf_abo->mem.kva, cmd_abo, &size, &op);
      if (ret)
          return ret;
  -    aie2_cmdlist_prepare_request(&req, cmdbuf_abo, size, 1);
-
-    msg.opcode = aie2_cmd_op_to_msg_op(op);
+    msg.opcode = EXEC_MSG_OPS(xdna)->get_chain_msg_op(op);
      if (msg.opcode == MSG_OP_MAX_OPCODE)
          return -EOPNOTSUPP;
+
+    EXEC_MSG_OPS(xdna)->init_chain_req(&req, cmdbuf_abo->mem.dev_addr,
+                       size, 1);
+    drm_clflush_virt_range(cmdbuf_abo->mem.kva, size);
+
      msg.handle = job;
      msg.notify_cb = notify_cb;
      msg.send_data = (u8 *)&req;
diff --git a/drivers/accel/amdxdna/aie2_msg_priv.h b/drivers/accel/amdxdna/aie2_msg_priv.h
index 2dbea1d09980..947daa63f064 100644
--- a/drivers/accel/amdxdna/aie2_msg_priv.h
+++ b/drivers/accel/amdxdna/aie2_msg_priv.h
@@ -20,6 +20,7 @@ enum aie2_msg_opcode {
      MSG_OP_CHAIN_EXEC_BUFFER_CF        = 0x12,
      MSG_OP_CHAIN_EXEC_DPU              = 0x13,
      MSG_OP_CONFIG_DEBUG_BO             = 0x14,
+    MSG_OP_CHAIN_EXEC_NPU              = 0x18,
      MSG_OP_MAX_XRT_OPCODE,
      MSG_OP_SUSPEND                     = 0x101,
      MSG_OP_RESUME                      = 0x102,
@@ -172,6 +173,16 @@ struct exec_dpu_req {
      __u32    payload[35];
  } __packed;
  +enum exec_npu_type {
+    EXEC_NPU_TYPE_NON_ELF        = 0x1,
+    EXEC_NPU_TYPE_PARTIAL_ELF    = 0x2,
+};
+
+union exec_req {
+    struct execute_buffer_req ebuf;
+    struct exec_dpu_req dpu_req;
+};
+
  struct execute_buffer_resp {
      enum aie2_msg_status    status;
  } __packed;
@@ -343,9 +354,6 @@ struct async_event_msg_resp {
  } __packed;
    #define MAX_CHAIN_CMDBUF_SIZE SZ_4K
-#define slot_has_space(slot, offset, payload_size)        \
-    (MAX_CHAIN_CMDBUF_SIZE >= (offset) + (payload_size) + \
-     sizeof(typeof(slot)))
    struct cmd_chain_slot_execbuf_cf {
      __u32 cu_idx;
@@ -363,12 +371,40 @@ struct cmd_chain_slot_dpu {
      __u32 args[] __counted_by(arg_cnt);
  };
  +#define MAX_NPU_ARGS_SIZE (26 * sizeof(__u32))
+struct cmd_chain_slot_npu {
+    enum exec_npu_type type;
+    u64 inst_buf_addr;
+    u64 save_buf_addr;
+    u64 restore_buf_addr;
+    u32 inst_size;
+    u32 save_size;
+    u32 restore_size;
+    u32 inst_prop_cnt;
+    u32 cu_idx;
+    u32 arg_cnt;
+    u32 args[] __counted_by(arg_cnt);
+} __packed;
+
  struct cmd_chain_req {
      __u64 buf_addr;
      __u32 buf_size;
      __u32 count;
  } __packed;
  +struct cmd_chain_npu_req {
+    u32 flags;
+    u32 reserved;
+    u64 buf_addr;
+    u32 buf_size;
+    u32 count;
+} __packed;
+
+union exec_chain_req {
+    struct cmd_chain_npu_req npu_req;
+    struct cmd_chain_req req;
+};
+
  struct cmd_chain_resp {
      enum aie2_msg_status    status;
      __u32            fail_cmd_idx;
diff --git a/drivers/accel/amdxdna/aie2_pci.c b/drivers/accel/amdxdna/aie2_pci.c
index 80313a2a98d4..d7ccbdaf47f5 100644
--- a/drivers/accel/amdxdna/aie2_pci.c
+++ b/drivers/accel/amdxdna/aie2_pci.c
@@ -55,6 +55,7 @@ struct mgmt_mbox_chann_info {
    static int aie2_check_protocol(struct amdxdna_dev_hdl *ndev, u32 fw_major, u32 fw_minor)
  {
+    const struct aie2_fw_feature_tbl *feature;
      struct amdxdna_dev *xdna = ndev->xdna;
        /*
@@ -78,6 +79,17 @@ static int aie2_check_protocol(struct amdxdna_dev_hdl *ndev, u32 fw_major, u32 f           XDNA_ERR(xdna, "Firmware minor version smaller than supported");
          return -EINVAL;
      }
+
+    for (feature = ndev->priv->fw_feature_tbl; feature && feature->min_minor;
+         feature++) {
+        if (fw_minor < feature->min_minor)
+            continue;
+        if (feature->max_minor > 0 && fw_minor > feature->max_minor)
+            continue;
+
+        set_bit(feature->feature, &ndev->feature_mask);
+    }
+
      return 0;
  }
  @@ -587,6 +599,7 @@ static int aie2_init(struct amdxdna_dev *xdna)
      }
        release_firmware(fw);
+    aie2_msg_init(ndev);
      amdxdna_pm_init(xdna);
      return 0;
  diff --git a/drivers/accel/amdxdna/aie2_pci.h b/drivers/accel/amdxdna/aie2_pci.h
index cfe42b0d4242..d0a3cb1fe8be 100644
--- a/drivers/accel/amdxdna/aie2_pci.h
+++ b/drivers/accel/amdxdna/aie2_pci.h
@@ -156,6 +156,17 @@ enum aie2_dev_status {
      AIE2_DEV_START,
  };
  +struct aie2_exec_msg_ops {
+    int (*init_cu_req)(struct amdxdna_gem_obj *cmd_bo, void *req,
+               size_t *size, u32 *msg_op);
+    int (*init_dpu_req)(struct amdxdna_gem_obj *cmd_bo, void *req,
+                size_t *size, u32 *msg_op);
+    void (*init_chain_req)(void *req, u64 slot_addr, size_t size, u32 cmd_cnt); +    int (*fill_cf_slot)(struct amdxdna_gem_obj *cmd_bo, void *slot, size_t *size); +    int (*fill_dpu_slot)(struct amdxdna_gem_obj *cmd_bo, void *slot, size_t *size);
+    u32 (*get_chain_msg_op)(u32 cmd_op);
+};
+
  struct amdxdna_dev_hdl {
      struct amdxdna_dev        *xdna;
      const struct amdxdna_dev_priv    *priv;
@@ -173,6 +184,8 @@ struct amdxdna_dev_hdl {
      u32                total_col;
      struct aie_version        version;
      struct aie_metadata        metadata;
+    unsigned long            feature_mask;
+    struct aie2_exec_msg_ops    *exec_msg_ops;
        /* power management and clock*/
      enum amdxdna_power_mode_type    pw_mode;
@@ -208,12 +221,26 @@ struct aie2_hw_ops {
      int (*set_dpm)(struct amdxdna_dev_hdl *ndev, u32 dpm_level);
  };
  +enum aie2_fw_feature {
+    AIE2_NPU_COMMAND,
+    AIE2_FEATURE_MAX
+};
+
+struct aie2_fw_feature_tbl {
+    enum aie2_fw_feature feature;
+    u32 max_minor;
+    u32 min_minor;
+};
+
+#define AIE2_FEATURE_ON(ndev, feature)    test_bit(feature, &(ndev)->feature_mask)
+
  struct amdxdna_dev_priv {
      const char            *fw_path;
      u64                protocol_major;
      u64                protocol_minor;
      const struct rt_config        *rt_config;
      const struct dpm_clk_freq    *dpm_clk_tbl;
+    const struct aie2_fw_feature_tbl *fw_feature_tbl;
    #define COL_ALIGN_NONE   0
  #define COL_ALIGN_NATURE 1
@@ -239,6 +266,7 @@ extern const struct dpm_clk_freq npu1_dpm_clk_table[];
  extern const struct dpm_clk_freq npu4_dpm_clk_table[];
  extern const struct rt_config npu1_default_rt_cfg[];
  extern const struct rt_config npu4_default_rt_cfg[];
+extern const struct aie2_fw_feature_tbl npu4_fw_feature_table[];
    /* aie2_smu.c */
  int aie2_smu_init(struct amdxdna_dev_hdl *ndev);
@@ -263,6 +291,7 @@ int aie2_get_array_async_error(struct amdxdna_dev_hdl *ndev,
                     struct amdxdna_drm_get_array *args);
    /* aie2_message.c */
+void aie2_msg_init(struct amdxdna_dev_hdl *ndev);
  int aie2_suspend_fw(struct amdxdna_dev_hdl *ndev);
  int aie2_resume_fw(struct amdxdna_dev_hdl *ndev);
  int aie2_set_runtime_cfg(struct amdxdna_dev_hdl *ndev, u32 type, u64 value); diff --git a/drivers/accel/amdxdna/amdxdna_ctx.c b/drivers/accel/amdxdna/amdxdna_ctx.c
index d18182c59668..878cc955f56d 100644
--- a/drivers/accel/amdxdna/amdxdna_ctx.c
+++ b/drivers/accel/amdxdna/amdxdna_ctx.c
@@ -113,14 +113,14 @@ void *amdxdna_cmd_get_payload(struct amdxdna_gem_obj *abo, u32 *size)
      return &cmd->data[num_masks];
  }
  -int amdxdna_cmd_get_cu_idx(struct amdxdna_gem_obj *abo)
+u32 amdxdna_cmd_get_cu_idx(struct amdxdna_gem_obj *abo)
  {
      struct amdxdna_cmd *cmd = abo->mem.kva;
      u32 num_masks, i;
      u32 *cu_mask;
        if (amdxdna_cmd_get_op(abo) == ERT_CMD_CHAIN)
-        return -1;
+        return INVALID_CU_IDX;
        num_masks = 1 + FIELD_GET(AMDXDNA_CMD_EXTRA_CU_MASK, cmd->header);
      cu_mask = cmd->data;
@@ -129,7 +129,7 @@ int amdxdna_cmd_get_cu_idx(struct amdxdna_gem_obj *abo)
              return ffs(cu_mask[i]) - 1;
      }
  -    return -1;
+    return INVALID_CU_IDX;
  }
    /*
diff --git a/drivers/accel/amdxdna/amdxdna_ctx.h b/drivers/accel/amdxdna/amdxdna_ctx.h
index 919c654dfea6..1aa2b938e07b 100644
--- a/drivers/accel/amdxdna/amdxdna_ctx.h
+++ b/drivers/accel/amdxdna/amdxdna_ctx.h
@@ -13,9 +13,10 @@
  struct amdxdna_hwctx_priv;
    enum ert_cmd_opcode {
-    ERT_START_CU      = 0,
-    ERT_CMD_CHAIN     = 19,
-    ERT_START_NPU     = 20,
+    ERT_INVALID_CMD    = ~0U,
~0U > 20, shouldn't this be at the end of the enum?> + ERT_START_CU = 0,
+    ERT_CMD_CHAIN = 19,
+    ERT_START_NPU = 20,
  };
    enum ert_cmd_state {
@@ -64,6 +65,8 @@ struct amdxdna_cmd {
      u32 data[];
  };
  +#define INVALID_CU_IDX        (~0U)
+
  struct amdxdna_hwctx {
      struct amdxdna_client        *client;
      struct amdxdna_hwctx_priv    *priv;
@@ -150,7 +153,7 @@ amdxdna_cmd_get_state(struct amdxdna_gem_obj *abo)
  }
    void *amdxdna_cmd_get_payload(struct amdxdna_gem_obj *abo, u32 *size);
-int amdxdna_cmd_get_cu_idx(struct amdxdna_gem_obj *abo);
+u32 amdxdna_cmd_get_cu_idx(struct amdxdna_gem_obj *abo);
    void amdxdna_sched_job_cleanup(struct amdxdna_sched_job *job);
  void amdxdna_hwctx_remove_all(struct amdxdna_client *client);
diff --git a/drivers/accel/amdxdna/npu1_regs.c b/drivers/accel/amdxdna/npu1_regs.c
index 23feb5f6fad3..ffc2e7c7b523 100644
--- a/drivers/accel/amdxdna/npu1_regs.c
+++ b/drivers/accel/amdxdna/npu1_regs.c
@@ -63,12 +63,18 @@ const struct dpm_clk_freq npu1_dpm_clk_table[] = {
      { 0 }
  };
  +static const struct aie2_fw_feature_tbl npu1_fw_feature_table[] = {
+    { .feature = AIE2_NPU_COMMAND, .min_minor = 8 },
+    { 0 }
+};
+
  static const struct amdxdna_dev_priv npu1_dev_priv = {
      .fw_path        = "amdnpu/1502_00/npu.sbin",
      .protocol_major = 0x5,
      .protocol_minor = 0x7,
      .rt_config    = npu1_default_rt_cfg,
      .dpm_clk_tbl    = npu1_dpm_clk_table,
+    .fw_feature_tbl = npu1_fw_feature_table,
      .col_align    = COL_ALIGN_NONE,
      .mbox_dev_addr  = NPU1_MBOX_BAR_BASE,
      .mbox_size      = 0, /* Use BAR size */
diff --git a/drivers/accel/amdxdna/npu2_regs.c b/drivers/accel/amdxdna/npu2_regs.c
index 67c2ae931c62..5fbfdcc3762d 100644
--- a/drivers/accel/amdxdna/npu2_regs.c
+++ b/drivers/accel/amdxdna/npu2_regs.c
@@ -67,6 +67,7 @@ static const struct amdxdna_dev_priv npu2_dev_priv = {
      .protocol_minor = 0x6,
      .rt_config    = npu4_default_rt_cfg,
      .dpm_clk_tbl    = npu4_dpm_clk_table,
+    .fw_feature_tbl = npu4_fw_feature_table,
      .col_align    = COL_ALIGN_NATURE,
      .mbox_dev_addr  = NPU2_MBOX_BAR_BASE,
      .mbox_size      = 0, /* Use BAR size */
diff --git a/drivers/accel/amdxdna/npu4_regs.c b/drivers/accel/amdxdna/npu4_regs.c
index fac6c1b0b74b..79aba12acfde 100644
--- a/drivers/accel/amdxdna/npu4_regs.c
+++ b/drivers/accel/amdxdna/npu4_regs.c
@@ -83,12 +83,18 @@ const struct dpm_clk_freq npu4_dpm_clk_table[] = {
      { 0 }
  };
  +const struct aie2_fw_feature_tbl npu4_fw_feature_table[] = {
+    { .feature = AIE2_NPU_COMMAND, .min_minor = 15 },
+    { 0 }
+};
+
  static const struct amdxdna_dev_priv npu4_dev_priv = {
      .fw_path        = "amdnpu/17f0_10/npu.sbin",
      .protocol_major = 0x6,
      .protocol_minor = 12,
      .rt_config    = npu4_default_rt_cfg,
      .dpm_clk_tbl    = npu4_dpm_clk_table,
+    .fw_feature_tbl = npu4_fw_feature_table,
      .col_align    = COL_ALIGN_NATURE,
      .mbox_dev_addr  = NPU4_MBOX_BAR_BASE,
      .mbox_size      = 0, /* Use BAR size */
diff --git a/drivers/accel/amdxdna/npu5_regs.c b/drivers/accel/amdxdna/npu5_regs.c
index c91e1fa76ff5..c5e259ab9f49 100644
--- a/drivers/accel/amdxdna/npu5_regs.c
+++ b/drivers/accel/amdxdna/npu5_regs.c
@@ -67,6 +67,7 @@ static const struct amdxdna_dev_priv npu5_dev_priv = {
      .protocol_minor = 12,
      .rt_config    = npu4_default_rt_cfg,
      .dpm_clk_tbl    = npu4_dpm_clk_table,
+    .fw_feature_tbl = npu4_fw_feature_table,
      .col_align    = COL_ALIGN_NATURE,
      .mbox_dev_addr  = NPU5_MBOX_BAR_BASE,
      .mbox_size      = 0, /* Use BAR size */
diff --git a/drivers/accel/amdxdna/npu6_regs.c b/drivers/accel/amdxdna/npu6_regs.c
index 773f738915a7..2de63b44d6e7 100644
--- a/drivers/accel/amdxdna/npu6_regs.c
+++ b/drivers/accel/amdxdna/npu6_regs.c
@@ -67,6 +67,7 @@ static const struct amdxdna_dev_priv npu6_dev_priv = {
      .protocol_minor = 12,
      .rt_config    = npu4_default_rt_cfg,
      .dpm_clk_tbl    = npu4_dpm_clk_table,
+    .fw_feature_tbl = npu4_fw_feature_table,
      .col_align    = COL_ALIGN_NATURE,
      .mbox_dev_addr  = NPU6_MBOX_BAR_BASE,
      .mbox_size      = 0, /* Use BAR size */

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