cavium-octeon/executive/cvmx-helper-rgmii.c

7  * Copyright (C) 2003-2018 Cavium, Inc.
14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
20  * along with this file; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
29  * Functions for RGMII/GMII/MII initialization, configuration,
34 #include <asm/octeon/cvmx-config.h>
36 #include <asm/octeon/cvmx-pko.h>
37 #include <asm/octeon/cvmx-helper.h>
38 #include <asm/octeon/cvmx-helper-board.h>
40 #include <asm/octeon/cvmx-npi-defs.h>
41 #include <asm/octeon/cvmx-gmxx-defs.h>
42 #include <asm/octeon/cvmx-asxx-defs.h>
43 #include <asm/octeon/cvmx-dbg-defs.h>
46  * Probe RGMII ports and determine the number present
48  * @interface: Interface to probe
50  * Returns Number of RGMII/GMII/MII ports (0-4).
61 			cvmx_dprintf("ERROR: RGMII initialize called in "  in __cvmx_helper_rgmii_probe()
68 			 * GMII/MII mode. This limits us to 2 ports  in __cvmx_helper_rgmii_probe()
92  * Put an RGMII interface in loopback mode. Internal packets sent
96  * @port:   IPD port number to loop.
126  * @interface: Interface to setup
127  * @port:      Port to setup (0..3)
136 	/* Set hi water mark as per errata GMX-4 */  in __cvmx_helper_errata_asx_pass1()
153  * to get RGMII to function on the supplied interface.
155  * @interface: PKO Interface to configure (0 or 1)
171 		return -1;  in __cvmx_helper_rgmii_enable()
175 		return -1;  in __cvmx_helper_rgmii_enable()
177 	/* Configure the ASX registers needed to use the RGMII ports */  in __cvmx_helper_rgmii_enable()
186 	/* Configure the GMX registers needed to use the RGMII ports */  in __cvmx_helper_rgmii_enable()
188 		/* Setting of CVMX_GMXX_TXX_THRESH has been moved to  in __cvmx_helper_rgmii_enable()
193 						       sys_info_ptr->  in __cvmx_helper_rgmii_enable()
197 			 * Configure more flexible RGMII preamble  in __cvmx_helper_rgmii_enable()
215 		 * pause frame (0 time) will be transmitted to restart  in __cvmx_helper_rgmii_enable()
258  * the last call to cvmx_helper_link_set().
260  * @ipd_port: IPD/PKO port to query
289  * @ipd_port:  IPD/PKO port to configure
309 	if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_SIM)  in __cvmx_helper_rgmii_link_set()
344 	 * Poll the GMX state machine waiting for it to become  in __cvmx_helper_rgmii_link_set()
372 	/* Set the link speed. Anything unknown is set to 1Gbps */  in __cvmx_helper_rgmii_link_set()
406 	 * ----	 ---  -----  ------  -----------------------------------------  in __cvmx_helper_rgmii_link_set()
408 	 *  0	   1	 X	0    Port 0 is RGMII  in __cvmx_helper_rgmii_link_set()
410 	 *  1	   1	 0	X    Ports 1 and 2 are configured as RGMII ports.  in __cvmx_helper_rgmii_link_set()
411 	 *  1	   1	 1	X    Port 1: GMII/MII; Port 2: disabled. GMII or  in __cvmx_helper_rgmii_link_set()
424 	/* Do a read to make sure all setup stuff is complete */  in __cvmx_helper_rgmii_link_set()
435 	/* Re-enable the TX path */  in __cvmx_helper_rgmii_link_set()