xref: /openbmc/u-boot/drivers/net/fm/p5020.c (revision d5cc3f52)
1 /*
2  * Copyright 2011 Freescale Semiconductor, Inc.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU General Public License as
6  * published by the Free Software Foundation; either version 2 of
7  * the License, or (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
17  * MA 02111-1307 USA
18  */
19 #include <common.h>
20 #include <phy.h>
21 #include <fm_eth.h>
22 #include <asm/io.h>
23 #include <asm/immap_85xx.h>
24 #include <asm/fsl_serdes.h>
25 
26 static u32 port_to_devdisr[] = {
27 	[FM1_DTSEC1] = FSL_CORENET_DEVDISR2_DTSEC1_1,
28 	[FM1_DTSEC2] = FSL_CORENET_DEVDISR2_DTSEC1_2,
29 	[FM1_DTSEC3] = FSL_CORENET_DEVDISR2_DTSEC1_3,
30 	[FM1_DTSEC4] = FSL_CORENET_DEVDISR2_DTSEC1_4,
31 	[FM1_DTSEC5] = FSL_CORENET_DEVDISR2_DTSEC1_5,
32 	[FM1_10GEC1] = FSL_CORENET_DEVDISR2_10GEC1,
33 };
34 
35 static int is_device_disabled(enum fm_port port)
36 {
37 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
38 	u32 devdisr2 = in_be32(&gur->devdisr2);
39 
40 	return port_to_devdisr[port] & devdisr2;
41 }
42 
43 void fman_disable_port(enum fm_port port)
44 {
45 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
46 
47 	/* don't allow disabling of DTSEC1 as its needed for MDIO */
48 	if (port == FM1_DTSEC1)
49 		return;
50 
51 	setbits_be32(&gur->devdisr2, port_to_devdisr[port]);
52 }
53 
54 phy_interface_t fman_port_enet_if(enum fm_port port)
55 {
56 	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
57 	u32 rcwsr11 = in_be32(&gur->rcwsr[11]);
58 
59 	if (is_device_disabled(port))
60 		return PHY_INTERFACE_MODE_NONE;
61 
62 	if ((port == FM1_10GEC1) && (is_serdes_configured(XAUI_FM1)))
63 		return PHY_INTERFACE_MODE_XGMII;
64 
65 	/* handle RGMII first */
66 	if ((port == FM1_DTSEC4) && ((rcwsr11 & FSL_CORENET_RCWSR11_EC1) ==
67 		FSL_CORENET_RCWSR11_EC1_FM1_DTSEC4_RGMII))
68 		return PHY_INTERFACE_MODE_RGMII;
69 
70 	if ((port == FM1_DTSEC4) && ((rcwsr11 & FSL_CORENET_RCWSR11_EC1) ==
71 		FSL_CORENET_RCWSR11_EC1_FM1_DTSEC4_MII))
72 		return PHY_INTERFACE_MODE_MII;
73 
74 	if ((port == FM1_DTSEC5) && ((rcwsr11 & FSL_CORENET_RCWSR11_EC2) ==
75 		FSL_CORENET_RCWSR11_EC2_FM1_DTSEC5_RGMII))
76 		return PHY_INTERFACE_MODE_RGMII;
77 
78 	if ((port == FM1_DTSEC5) && ((rcwsr11 & FSL_CORENET_RCWSR11_EC2) ==
79 		FSL_CORENET_RCWSR11_EC2_FM1_DTSEC5_MII))
80 		return PHY_INTERFACE_MODE_MII;
81 
82 	switch (port) {
83 	case FM1_DTSEC1:
84 	case FM1_DTSEC2:
85 	case FM1_DTSEC3:
86 	case FM1_DTSEC4:
87 	case FM1_DTSEC5:
88 		if (is_serdes_configured(SGMII_FM1_DTSEC1 + port - FM1_DTSEC1))
89 			return PHY_INTERFACE_MODE_SGMII;
90 		break;
91 	default:
92 		return PHY_INTERFACE_MODE_NONE;
93 	}
94 
95 	return PHY_INTERFACE_MODE_NONE;
96 }
97