Le 11/11/2025 à 02:15, David Zhang a écrit :
This patch introduces a set of APIs for allowing the PCIe driver submit
commands, transfer binary payloads and retrieve firmware metadata.
Key features:
- RM queue command APIs:
- create and destroy RM queue commands
- Initialized command data payloads
- Send and poll for command completion
- Service-level operations:
- Retrieve firmware ID
- Program accelerator and APU firmware images
- Periodic health monitoring
Co-developed-by: Nishad Saraf <[email protected]>
Signed-off-by: Nishad Saraf <[email protected]>
Signed-off-by: David Zhang <[email protected]>
...
+static void rm_check_health(struct work_struct *w)
+{
+ struct rm_device *rdev = to_rdev_health_monitor(w);
+ u32 max_len = PAGE_SIZE;
+ struct rm_cmd *cmd;
+ int ret;
+
+ ret = rm_queue_create_cmd(rdev, RM_QUEUE_OP_GET_LOG_PAGE, &cmd);
+ if (ret)
+ return;
+
+ ret = rm_queue_payload_init(cmd, RM_CMD_LOG_PAGE_AXI_TRIP_STATUS);
+ if (ret)
+ goto destroy_cmd;
+
+ ret = rm_queue_send_cmd(cmd, RM_CMD_WAIT_CONFIG_TIMEOUT);
+ if (ret == -ETIME || ret == -EINVAL)
+ goto payload_fini;
+
+ if (ret) {
+ u32 log_len = cmd->cq_msg.data.page.len;
+
+ if (log_len > max_len) {
+ vdev_warn(rdev->vdev, "msg size %d is greater than requested
%d",
+ log_len, max_len);
+ log_len = max_len;
+ }
+
+ if (log_len) {
+ char *buffer = vzalloc(log_len);
+
+ if (!buffer)
+ goto payload_fini;
+
+ ret = rm_queue_copy_response(cmd, buffer, log_len);
+ if (ret) {
+ vfree(buffer);
+ goto payload_fini;
+ }
+
+ vdev_err(rdev->vdev, "%s", buffer);
This looks like the normal path. is vdev_err() expected here?
+ vfree(buffer);
+
+ } else {
+ vdev_err(rdev->vdev, "firewall check ret%d", ret);
+ }
+
+ rdev->firewall_tripped = 1;
+ }
+
+payload_fini:
+ rm_queue_payload_fini(cmd);
+destroy_cmd:
+ rm_queue_destroy_cmd(cmd);
+
+ vdev_dbg(rdev->vdev, "check result: %d", ret);
+}
...
+struct rm_device *versal_pci_rm_init(struct versal_pci_device *vdev)
+{
+ struct rm_header *header;
+ struct rm_device *rdev;
+ u32 status;
+ int ret;
+
+ rdev = devm_kzalloc(&vdev->pdev->dev, sizeof(*rdev), GFP_KERNEL);
+ if (!rdev)
+ return ERR_PTR(-ENOMEM);
+
+ rdev->vdev = vdev;
+ header = &rdev->rm_metadata;
+
+ rm_shmem_bulk_read(rdev, RM_HDR_OFF, (u32 *)header, sizeof(*header));
+ if (header->magic != RM_HDR_MAGIC_NUM) {
+ vdev_err(vdev, "Invalid RM header 0x%x", header->magic);
+ ret = -ENODEV;
+ goto err;
+ }
+
+ status = rm_shmem_read(rdev, header->status_off);
+ if (!status) {
+ vdev_err(vdev, "RM status %d is not ready", status);
This can be simplified, status is knwon to be 0.
+ ret = -ENODEV;
+ goto err;
+ }
...
CJ
