1 /*
2  * (C) Copyright 2008 Stefan Roese <sr@denx.de>, DENX Software Engineering
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <netdev.h>
9 #include <asm/io.h>
10 #include "vct.h"
11 
12 /*
13  * EBI initialization for SMC911x access
14  */
15 int ebi_init_smc911x(void)
16 {
17 	reg_write(EBI_DEV1_CONFIG1(EBI_BASE), 0x00003020);
18 	reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004F);
19 
20 	reg_write(EBI_DEV1_TIM1_RD1(EBI_BASE), 0x00501100);
21 	reg_write(EBI_DEV1_TIM1_RD2(EBI_BASE), 0x0FF02111);
22 
23 	reg_write(EBI_DEV1_TIM_EXT(EBI_BASE), 0xFFF00000);
24 	reg_write(EBI_DEV1_EXT_ACC(EBI_BASE), 0x0FFFFFFF);
25 
26 	reg_write(EBI_DEV1_TIM1_WR1(EBI_BASE), 0x05001100);
27 	reg_write(EBI_DEV1_TIM1_WR2(EBI_BASE), 0x3FC21110);
28 
29 	return 0;
30 }
31 
32 /*
33  * Accessor functions replacing the "weak" functions in
34  * drivers/net/smc911x.c
35  */
36 u32 smc911x_reg_read(struct eth_device *dev, u32 addr)
37 {
38 	volatile u32 data;
39 
40 	addr += dev->iobase;
41 	reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004F);
42 	ebi_wait();
43 	reg_write(EBI_CPU_IO_ACCS(EBI_BASE), (EXT_DEVICE_CHANNEL_1 | addr));
44 	ebi_wait();
45 	data = reg_read(EBI_IO_ACCS_DATA(EBI_BASE));
46 
47 	return (data);
48 }
49 
50 void smc911x_reg_write(struct eth_device *dev, u32 addr, u32 data)
51 {
52 	addr += dev->iobase;
53 	reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004F);
54 	ebi_wait();
55 	reg_write(EBI_IO_ACCS_DATA(EBI_BASE), data);
56 	reg_write(EBI_CPU_IO_ACCS(EBI_BASE),
57 		  EXT_DEVICE_CHANNEL_1 | EBI_CPU_WRITE | addr);
58 	ebi_wait();
59 }
60 
61 void pkt_data_push(struct eth_device *dev, u32 addr, u32 data)
62 {
63 	addr += dev->iobase;
64 	reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004A);
65 	ebi_wait();
66 	reg_write(EBI_IO_ACCS_DATA(EBI_BASE), data);
67 	reg_write(EBI_CPU_IO_ACCS(EBI_BASE),
68 		  EXT_DEVICE_CHANNEL_1 | EBI_CPU_WRITE | addr);
69 	ebi_wait();
70 
71 	return;
72 }
73 
74 u32 pkt_data_pull(struct eth_device *dev, u32 addr)
75 {
76 	volatile u32 data;
77 
78 	addr += dev->iobase;
79 	reg_write(EBI_DEV1_CONFIG2(EBI_BASE), 0x0000004A);
80 	ebi_wait();
81 	reg_write(EBI_CPU_IO_ACCS(EBI_BASE), (EXT_DEVICE_CHANNEL_1 | addr));
82 	ebi_wait();
83 	data = reg_read(EBI_IO_ACCS_DATA(EBI_BASE));
84 
85 	return data;
86 }
87 
88 int board_eth_init(bd_t *bis)
89 {
90 	int rc = 0;
91 #ifdef CONFIG_SMC911X
92 	rc = smc911x_initialize(0, CONFIG_DRIVER_SMC911X_BASE);
93 #endif
94 	return rc;
95 }
96