xref: /openbmc/u-boot/drivers/net/fm/tgec.c (revision cbd2fba1)
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright 2009-2011 Freescale Semiconductor, Inc.
4  *	Dave Liu <daveliu@freescale.com>
5  */
6 
7 /* MAXFRM - maximum frame length */
8 #define MAXFRM_MASK	0x0000ffff
9 
10 #include <common.h>
11 #include <phy.h>
12 #include <asm/types.h>
13 #include <asm/io.h>
14 #include <fsl_tgec.h>
15 
16 #include "fm.h"
17 
18 #define TGEC_CMD_CFG_INIT	(TGEC_CMD_CFG_NO_LEN_CHK | \
19 				 TGEC_CMD_CFG_RX_ER_DISC | \
20 				 TGEC_CMD_CFG_STAT_CLR | \
21 				 TGEC_CMD_CFG_PAUSE_IGNORE | \
22 				 TGEC_CMD_CFG_CRC_FWD)
23 #define TGEC_CMD_CFG_FINAL	(TGEC_CMD_CFG_NO_LEN_CHK | \
24 				 TGEC_CMD_CFG_RX_ER_DISC | \
25 				 TGEC_CMD_CFG_PAUSE_IGNORE | \
26 				 TGEC_CMD_CFG_CRC_FWD)
27 
28 static void tgec_init_mac(struct fsl_enet_mac *mac)
29 {
30 	struct tgec *regs = mac->base;
31 
32 	/* mask all interrupt */
33 	out_be32(&regs->imask, IMASK_MASK_ALL);
34 
35 	/* clear all events */
36 	out_be32(&regs->ievent, IEVENT_CLEAR_ALL);
37 
38 	/* set the max receive length */
39 	out_be32(&regs->maxfrm, mac->max_rx_len & MAXFRM_MASK);
40 
41 	/*
42 	 * 1588 disable, insert second mac disable payload length check
43 	 * disable, normal operation, any rx error frame is discarded, clear
44 	 * counters, pause frame ignore, no promiscuous, LAN mode Rx CRC no
45 	 * strip, Tx CRC append, Rx disable and Tx disable
46 	 */
47 	out_be32(&regs->command_config, TGEC_CMD_CFG_INIT);
48 	udelay(1000);
49 	out_be32(&regs->command_config, TGEC_CMD_CFG_FINAL);
50 
51 	/* multicast frame reception for the hash entry disable */
52 	out_be32(&regs->hashtable_ctrl, 0);
53 }
54 
55 static void tgec_enable_mac(struct fsl_enet_mac *mac)
56 {
57 	struct tgec *regs = mac->base;
58 
59 	setbits_be32(&regs->command_config, TGEC_CMD_CFG_RXTX_EN);
60 }
61 
62 static void tgec_disable_mac(struct fsl_enet_mac *mac)
63 {
64 	struct tgec *regs = mac->base;
65 
66 	clrbits_be32(&regs->command_config, TGEC_CMD_CFG_RXTX_EN);
67 }
68 
69 static void tgec_set_mac_addr(struct fsl_enet_mac *mac, u8 *mac_addr)
70 {
71 	struct tgec *regs = mac->base;
72 	u32 mac_addr0, mac_addr1;
73 
74 	/*
75 	 * if a station address of 0x12345678ABCD, perform a write to
76 	 * MAC_ADDR0 of 0x78563412, MAC_ADDR1 of 0x0000CDAB
77 	 */
78 	mac_addr0 = (mac_addr[3] << 24) | (mac_addr[2] << 16) | \
79 			(mac_addr[1] << 8)  | (mac_addr[0]);
80 	out_be32(&regs->mac_addr_0, mac_addr0);
81 
82 	mac_addr1 = ((mac_addr[5] << 8) | mac_addr[4]) & 0x0000ffff;
83 	out_be32(&regs->mac_addr_1, mac_addr1);
84 }
85 
86 static void tgec_set_interface_mode(struct fsl_enet_mac *mac,
87 					phy_interface_t type, int speed)
88 {
89 	/* nothing right now */
90 	return;
91 }
92 
93 void init_tgec(struct fsl_enet_mac *mac, void *base,
94 		void *phyregs, int max_rx_len)
95 {
96 	mac->base = base;
97 	mac->phyregs = phyregs;
98 	mac->max_rx_len = max_rx_len;
99 	mac->init_mac = tgec_init_mac;
100 	mac->enable_mac = tgec_enable_mac;
101 	mac->disable_mac = tgec_disable_mac;
102 	mac->set_mac_addr = tgec_set_mac_addr;
103 	mac->set_if_mode = tgec_set_interface_mode;
104 }
105