1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (C) 2018-2022 Marvell International Ltd.
4  *
5  * Functions for AGL (RGMII) commong initialization, configuration.
6  */
7 
8 #ifndef __CVMX_AGL_H__
9 #define __CVMX_AGL_H__
10 
11 /*
12  * @param port to enable
13  *
14  * @return Zero on success, negative on failure
15  */
16 int cvmx_agl_enable(int port);
17 
18 cvmx_helper_link_info_t cvmx_agl_link_get(int port);
19 
20 /*
21  * Set MII/RGMII link based on mode.
22  *
23  * @param port   interface port to set the link.
24  * @param link_info  Link status
25  *
26  * @return       0 on success and 1 on failure
27  */
28 int cvmx_agl_link_set(int port, cvmx_helper_link_info_t link_info);
29 
30 /**
31  * Disables the sending of flow control (pause) frames on the specified
32  * AGL (RGMII) port(s).
33  *
34  * @param interface Which interface (0 or 1)
35  * @param port_mask Mask (4bits) of which ports on the interface to disable
36  *                  backpressure on.
37  *                  1 => disable backpressure
38  *                  0 => enable backpressure
39  *
40  * @return 0 on success
41  *         -1 on error
42  */
43 int cvmx_agl_set_backpressure_override(u32 interface, uint32_t port_mask);
44 
45 #endif /* __CVMX_AGL_H__ */
46