1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/*
* Copyright (C) 2016 Broadcom
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/bcma/bcma.h>
#include <linux/etherdevice.h>
#include <linux/of_address.h>
#include <linux/of_net.h>
#include "bgmac.h"
static u32 platform_bgmac_read(struct bgmac *bgmac, u16 offset)
{
return readl(bgmac->plat.base + offset);
}
static void platform_bgmac_write(struct bgmac *bgmac, u16 offset, u32 value)
{
writel(value, bgmac->plat.base + offset);
}
static u32 platform_bgmac_idm_read(struct bgmac *bgmac, u16 offset)
{
return readl(bgmac->plat.idm_base + offset);
}
static void platform_bgmac_idm_write(struct bgmac *bgmac, u16 offset, u32 value)
{
return writel(value, bgmac->plat.idm_base + offset);
}
static bool platform_bgmac_clk_enabled(struct bgmac *bgmac)
{
if ((bgmac_idm_read(bgmac, BCMA_IOCTL) &
(BCMA_IOCTL_CLK | BCMA_IOCTL_FGC)) != BCMA_IOCTL_CLK)
return false;
if (bgmac_idm_read(bgmac, BCMA_RESET_CTL) & BCMA_RESET_CTL_RESET)
return false;
return true;
}
static void platform_bgmac_clk_enable(struct bgmac *bgmac, u32 flags)
{
bgmac_idm_write(bgmac, BCMA_IOCTL,
(BCMA_IOCTL_CLK | BCMA_IOCTL_FGC | flags));
bgmac_idm_read(bgmac, BCMA_IOCTL);
bgmac_idm_write(bgmac, BCMA_RESET_CTL, 0);
bgmac_idm_read(bgmac, BCMA_RESET_CTL);
udelay(1);
bgmac_idm_write(bgmac, BCMA_IOCTL, (BCMA_IOCTL_CLK | flags));
bgmac_idm_read(bgmac, BCMA_IOCTL);
udelay(1);
}
static void platform_bgmac_cco_ctl_maskset(struct bgmac *bgmac, u32 offset,
u32 mask, u32 set)
{
/* This shouldn't be encountered */
WARN_ON(1);
}
static u32 platform_bgmac_get_bus_clock(struct bgmac *bgmac)
{
/* This shouldn't be encountered */
WARN_ON(1);
return 0;
}
static void platform_bgmac_cmn_maskset32(struct bgmac *bgmac, u16 offset,
u32 mask, u32 set)
{
/* This shouldn't be encountered */
WARN_ON(1);
}
static int bgmac_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct bgmac *bgmac;
struct resource *regs;
const u8 *mac_addr;
bgmac = devm_kzalloc(&pdev->dev, sizeof(*bgmac), GFP_KERNEL);
if (!bgmac)
return -ENOMEM;
platform_set_drvdata(pdev, bgmac);
/* Set the features of the 4707 family */
bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
bgmac->feature_flags |= BGMAC_FEAT_NO_RESET;
bgmac->feature_flags |= BGMAC_FEAT_FORCE_SPEED_2500;
bgmac->feature_flags |= BGMAC_FEAT_CMDCFG_SR_REV4;
bgmac->feature_flags |= BGMAC_FEAT_TX_MASK_SETUP;
bgmac->feature_flags |= BGMAC_FEAT_RX_MASK_SETUP;
bgmac->dev = &pdev->dev;
bgmac->dma_dev = &pdev->dev;
mac_addr = of_get_mac_address(np);
if (mac_addr)
ether_addr_copy(bgmac->mac_addr, mac_addr);
else
dev_warn(&pdev->dev, "MAC address not present in device tree\n");
bgmac->irq = platform_get_irq(pdev, 0);
if (bgmac->irq < 0) {
dev_err(&pdev->dev, "Unable to obtain IRQ\n");
return bgmac->irq;
}
regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "amac_base");
if (!regs) {
dev_err(&pdev->dev, "Unable to obtain base resource\n");
return -EINVAL;
}
bgmac->plat.base = devm_ioremap_resource(&pdev->dev, regs);
if (IS_ERR(bgmac->plat.base)) {
dev_err(&pdev->dev, "Unable to map base resource\n");
return PTR_ERR(bgmac->plat.base);
}
regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "idm_base");
if (!regs) {
dev_err(&pdev->dev, "Unable to obtain idm resource\n");
return -EINVAL;
}
bgmac->plat.idm_base = devm_ioremap_resource(&pdev->dev, regs);
if (IS_ERR(bgmac->plat.idm_base)) {
dev_err(&pdev->dev, "Unable to map idm resource\n");
return PTR_ERR(bgmac->plat.idm_base);
}
bgmac->read = platform_bgmac_read;
bgmac->write = platform_bgmac_write;
bgmac->idm_read = platform_bgmac_idm_read;
bgmac->idm_write = platform_bgmac_idm_write;
bgmac->clk_enabled = platform_bgmac_clk_enabled;
bgmac->clk_enable = platform_bgmac_clk_enable;
bgmac->cco_ctl_maskset = platform_bgmac_cco_ctl_maskset;
bgmac->get_bus_clock = platform_bgmac_get_bus_clock;
bgmac->cmn_maskset32 = platform_bgmac_cmn_maskset32;
return bgmac_enet_probe(bgmac);
}
static int bgmac_remove(struct platform_device *pdev)
{
struct bgmac *bgmac = platform_get_drvdata(pdev);
bgmac_enet_remove(bgmac);
return 0;
}
static const struct of_device_id bgmac_of_enet_match[] = {
{.compatible = "brcm,amac",},
{.compatible = "brcm,nsp-amac",},
{},
};
MODULE_DEVICE_TABLE(of, bgmac_of_enet_match);
static struct platform_driver bgmac_enet_driver = {
.driver = {
.name = "bgmac-enet",
.of_match_table = bgmac_of_enet_match,
},
.probe = bgmac_probe,
.remove = bgmac_remove,
};
module_platform_driver(bgmac_enet_driver);
MODULE_LICENSE("GPL");
|
