1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
7 */
8
9 #include <linux/init.h>
10 #include <linux/kernel.h>
11 #include <linux/platform_device.h>
12 #include <bcm63xx_dev_enet.h>
13 #include <bcm63xx_io.h>
14 #include <bcm63xx_regs.h>
15
16 static struct resource shared_res[] = {
17 {
18 .start = -1, /* filled at runtime */
19 .end = -1, /* filled at runtime */
20 .flags = IORESOURCE_MEM,
21 },
22 };
23
24 static struct platform_device bcm63xx_enet_shared_device = {
25 .name = "bcm63xx_enet_shared",
26 .id = 0,
27 .num_resources = ARRAY_SIZE(shared_res),
28 .resource = shared_res,
29 };
30
31 static int shared_device_registered;
32
33 static struct resource enet0_res[] = {
34 {
35 .start = -1, /* filled at runtime */
36 .end = -1, /* filled at runtime */
37 .flags = IORESOURCE_MEM,
38 },
39 {
40 .start = -1, /* filled at runtime */
41 .flags = IORESOURCE_IRQ,
42 },
43 {
44 .start = -1, /* filled at runtime */
45 .flags = IORESOURCE_IRQ,
46 },
47 {
48 .start = -1, /* filled at runtime */
49 .flags = IORESOURCE_IRQ,
50 },
51 };
52
53 static struct bcm63xx_enet_platform_data enet0_pd;
54
55 static struct platform_device bcm63xx_enet0_device = {
56 .name = "bcm63xx_enet",
57 .id = 0,
58 .num_resources = ARRAY_SIZE(enet0_res),
59 .resource = enet0_res,
60 .dev = {
61 .platform_data = &enet0_pd,
62 },
63 };
64
65 static struct resource enet1_res[] = {
66 {
67 .start = -1, /* filled at runtime */
68 .end = -1, /* filled at runtime */
69 .flags = IORESOURCE_MEM,
70 },
71 {
72 .start = -1, /* filled at runtime */
73 .flags = IORESOURCE_IRQ,
74 },
75 {
76 .start = -1, /* filled at runtime */
77 .flags = IORESOURCE_IRQ,
78 },
79 {
80 .start = -1, /* filled at runtime */
81 .flags = IORESOURCE_IRQ,
82 },
83 };
84
85 static struct bcm63xx_enet_platform_data enet1_pd;
86
87 static struct platform_device bcm63xx_enet1_device = {
88 .name = "bcm63xx_enet",
89 .id = 1,
90 .num_resources = ARRAY_SIZE(enet1_res),
91 .resource = enet1_res,
92 .dev = {
93 .platform_data = &enet1_pd,
94 },
95 };
96
bcm63xx_enet_register(int unit,const struct bcm63xx_enet_platform_data * pd)97 int __init bcm63xx_enet_register(int unit,
98 const struct bcm63xx_enet_platform_data *pd)
99 {
100 struct platform_device *pdev;
101 struct bcm63xx_enet_platform_data *dpd;
102 int ret;
103
104 if (unit > 1)
105 return -ENODEV;
106
107 if (unit == 1 && BCMCPU_IS_6338())
108 return -ENODEV;
109
110 if (!shared_device_registered) {
111 shared_res[0].start = bcm63xx_regset_address(RSET_ENETDMA);
112 shared_res[0].end = shared_res[0].start;
113 if (BCMCPU_IS_6338())
114 shared_res[0].end += (RSET_ENETDMA_SIZE / 2) - 1;
115 else
116 shared_res[0].end += (RSET_ENETDMA_SIZE) - 1;
117
118 ret = platform_device_register(&bcm63xx_enet_shared_device);
119 if (ret)
120 return ret;
121 shared_device_registered = 1;
122 }
123
124 if (unit == 0) {
125 enet0_res[0].start = bcm63xx_regset_address(RSET_ENET0);
126 enet0_res[0].end = enet0_res[0].start;
127 enet0_res[0].end += RSET_ENET_SIZE - 1;
128 enet0_res[1].start = bcm63xx_get_irq_number(IRQ_ENET0);
129 enet0_res[2].start = bcm63xx_get_irq_number(IRQ_ENET0_RXDMA);
130 enet0_res[3].start = bcm63xx_get_irq_number(IRQ_ENET0_TXDMA);
131 pdev = &bcm63xx_enet0_device;
132 } else {
133 enet1_res[0].start = bcm63xx_regset_address(RSET_ENET1);
134 enet1_res[0].end = enet1_res[0].start;
135 enet1_res[0].end += RSET_ENET_SIZE - 1;
136 enet1_res[1].start = bcm63xx_get_irq_number(IRQ_ENET1);
137 enet1_res[2].start = bcm63xx_get_irq_number(IRQ_ENET1_RXDMA);
138 enet1_res[3].start = bcm63xx_get_irq_number(IRQ_ENET1_TXDMA);
139 pdev = &bcm63xx_enet1_device;
140 }
141
142 /* copy given platform data */
143 dpd = pdev->dev.platform_data;
144 memcpy(dpd, pd, sizeof(*pd));
145
146 /* adjust them in case internal phy is used */
147 if (dpd->use_internal_phy) {
148
149 /* internal phy only exists for enet0 */
150 if (unit == 1)
151 return -ENODEV;
152
153 dpd->phy_id = 1;
154 dpd->has_phy_interrupt = 1;
155 dpd->phy_interrupt = bcm63xx_get_irq_number(IRQ_ENET_PHY);
156 }
157
158 ret = platform_device_register(pdev);
159 if (ret)
160 return ret;
161 return 0;
162 }
163