xref: /openbmc/u-boot/drivers/net/fm/tgec.c (revision d275c40c)
1 /*
2  * Copyright 2009-2011 Freescale Semiconductor, Inc.
3  *	Dave Liu <daveliu@freescale.com>
4  *
5  * SPDX-License-Identifier:	GPL-2.0+
6  */
7 
8 /* MAXFRM - maximum frame length */
9 #define MAXFRM_MASK	0x0000ffff
10 
11 #include <common.h>
12 #include <phy.h>
13 #include <asm/types.h>
14 #include <asm/io.h>
15 #include <asm/fsl_tgec.h>
16 
17 #include "fm.h"
18 
19 #define TGEC_CMD_CFG_INIT	(TGEC_CMD_CFG_NO_LEN_CHK | \
20 				 TGEC_CMD_CFG_RX_ER_DISC | \
21 				 TGEC_CMD_CFG_STAT_CLR | \
22 				 TGEC_CMD_CFG_PAUSE_IGNORE | \
23 				 TGEC_CMD_CFG_CRC_FWD)
24 #define TGEC_CMD_CFG_FINAL	(TGEC_CMD_CFG_NO_LEN_CHK | \
25 				 TGEC_CMD_CFG_RX_ER_DISC | \
26 				 TGEC_CMD_CFG_PAUSE_IGNORE | \
27 				 TGEC_CMD_CFG_CRC_FWD)
28 
29 static void tgec_init_mac(struct fsl_enet_mac *mac)
30 {
31 	struct tgec *regs = mac->base;
32 
33 	/* mask all interrupt */
34 	out_be32(&regs->imask, IMASK_MASK_ALL);
35 
36 	/* clear all events */
37 	out_be32(&regs->ievent, IEVENT_CLEAR_ALL);
38 
39 	/* set the max receive length */
40 	out_be32(&regs->maxfrm, mac->max_rx_len & MAXFRM_MASK);
41 
42 	/*
43 	 * 1588 disable, insert second mac disable payload length check
44 	 * disable, normal operation, any rx error frame is discarded, clear
45 	 * counters, pause frame ignore, no promiscuous, LAN mode Rx CRC no
46 	 * strip, Tx CRC append, Rx disable and Tx disable
47 	 */
48 	out_be32(&regs->command_config, TGEC_CMD_CFG_INIT);
49 	udelay(1000);
50 	out_be32(&regs->command_config, TGEC_CMD_CFG_FINAL);
51 
52 	/* multicast frame reception for the hash entry disable */
53 	out_be32(&regs->hashtable_ctrl, 0);
54 }
55 
56 static void tgec_enable_mac(struct fsl_enet_mac *mac)
57 {
58 	struct tgec *regs = mac->base;
59 
60 	setbits_be32(&regs->command_config, TGEC_CMD_CFG_RXTX_EN);
61 }
62 
63 static void tgec_disable_mac(struct fsl_enet_mac *mac)
64 {
65 	struct tgec *regs = mac->base;
66 
67 	clrbits_be32(&regs->command_config, TGEC_CMD_CFG_RXTX_EN);
68 }
69 
70 static void tgec_set_mac_addr(struct fsl_enet_mac *mac, u8 *mac_addr)
71 {
72 	struct tgec *regs = mac->base;
73 	u32 mac_addr0, mac_addr1;
74 
75 	/*
76 	 * if a station address of 0x12345678ABCD, perform a write to
77 	 * MAC_ADDR0 of 0x78563412, MAC_ADDR1 of 0x0000CDAB
78 	 */
79 	mac_addr0 = (mac_addr[3] << 24) | (mac_addr[2] << 16) | \
80 			(mac_addr[1] << 8)  | (mac_addr[0]);
81 	out_be32(&regs->mac_addr_0, mac_addr0);
82 
83 	mac_addr1 = ((mac_addr[5] << 8) | mac_addr[4]) & 0x0000ffff;
84 	out_be32(&regs->mac_addr_1, mac_addr1);
85 }
86 
87 static void tgec_set_interface_mode(struct fsl_enet_mac *mac,
88 					phy_interface_t type, int speed)
89 {
90 	/* nothing right now */
91 	return;
92 }
93 
94 void init_tgec(struct fsl_enet_mac *mac, void *base,
95 		void *phyregs, int max_rx_len)
96 {
97 	mac->base = base;
98 	mac->phyregs = phyregs;
99 	mac->max_rx_len = max_rx_len;
100 	mac->init_mac = tgec_init_mac;
101 	mac->enable_mac = tgec_enable_mac;
102 	mac->disable_mac = tgec_disable_mac;
103 	mac->set_mac_addr = tgec_set_mac_addr;
104 	mac->set_if_mode = tgec_set_interface_mode;
105 }
106