static int s10_ops_write_init()

in stratix10-soc.c [174:229]

• 48 lines of code
• 7 McCabe index (conditional complexity)

static int s10_ops_write_init(struct fpga_manager *mgr,
			      struct fpga_image_info *info,
			      const char *buf, size_t count)
{
	struct s10_priv *priv = mgr->priv;
	struct device *dev = priv->client.dev;
	struct stratix10_svc_command_config_type ctype;
	char *kbuf;
	uint i;
	int ret;

	ctype.flags = 0;
	if (info->flags & FPGA_MGR_PARTIAL_RECONFIG) {
		dev_dbg(dev, "Requesting partial reconfiguration.\n");
		ctype.flags |= BIT(COMMAND_RECONFIG_FLAG_PARTIAL);
	} else {
		dev_dbg(dev, "Requesting full reconfiguration.\n");
	}

	reinit_completion(&priv->status_return_completion);
	ret = s10_svc_send_msg(priv, COMMAND_RECONFIG,
			       &ctype, sizeof(ctype));
	if (ret < 0)
		goto init_done;

	ret = wait_for_completion_timeout(
		&priv->status_return_completion, S10_RECONFIG_TIMEOUT);
	if (!ret) {
		dev_err(dev, "timeout waiting for RECONFIG_REQUEST\n");
		ret = -ETIMEDOUT;
		goto init_done;
	}

	ret = 0;
	if (!test_and_clear_bit(SVC_STATUS_OK, &priv->status)) {
		ret = -ETIMEDOUT;
		goto init_done;
	}

	/* Allocate buffers from the service layer's pool. */
	for (i = 0; i < NUM_SVC_BUFS; i++) {
		kbuf = stratix10_svc_allocate_memory(priv->chan, SVC_BUF_SIZE);
		if (!kbuf) {
			s10_free_buffers(mgr);
			ret = -ENOMEM;
			goto init_done;
		}

		priv->svc_bufs[i].buf = kbuf;
		priv->svc_bufs[i].lock = 0;
	}

init_done:
	stratix10_svc_done(priv->chan);
	return ret;
}