Merge branches 'x86/apic', 'x86/asm', 'x86/cleanups', 'x86/debug', 'x86/kconfig'...
[linux-2.6] / arch / powerpc / sysdev / tsi108_dev.c
1 /*
2  * tsi108/109 device setup code
3  *
4  * Maintained by Roy Zang < tie-fei.zang@freescale.com >
5  *
6  * This program is free software; you can redistribute  it and/or modify it
7  * under  the terms of  the GNU General  Public License as published by the
8  * Free Software Foundation;  either version 2 of the  License, or (at your
9  * option) any later version.
10  */
11
12 #include <linux/stddef.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/errno.h>
16 #include <linux/major.h>
17 #include <linux/delay.h>
18 #include <linux/irq.h>
19 #include <linux/module.h>
20 #include <linux/device.h>
21 #include <linux/platform_device.h>
22 #include <asm/tsi108.h>
23
24 #include <asm/system.h>
25 #include <asm/atomic.h>
26 #include <asm/io.h>
27 #include <asm/irq.h>
28 #include <asm/prom.h>
29 #include <mm/mmu_decl.h>
30
31 #undef DEBUG
32
33 #ifdef DEBUG
34 #define DBG(fmt...) do { printk(fmt); } while(0)
35 #else
36 #define DBG(fmt...) do { } while(0)
37 #endif
38
39 static phys_addr_t tsi108_csr_base = -1;
40
41 phys_addr_t get_csrbase(void)
42 {
43         struct device_node *tsi;
44
45         if (tsi108_csr_base != -1)
46                 return tsi108_csr_base;
47
48         tsi = of_find_node_by_type(NULL, "tsi-bridge");
49         if (tsi) {
50                 unsigned int size;
51                 const void *prop = of_get_property(tsi, "reg", &size);
52                 tsi108_csr_base = of_translate_address(tsi, prop);
53                 of_node_put(tsi);
54         };
55         return tsi108_csr_base;
56 }
57
58 u32 get_vir_csrbase(void)
59 {
60         return (u32) (ioremap(get_csrbase(), 0x10000));
61 }
62
63 EXPORT_SYMBOL(get_csrbase);
64 EXPORT_SYMBOL(get_vir_csrbase);
65
66 static int __init tsi108_eth_of_init(void)
67 {
68         struct device_node *np;
69         unsigned int i = 0;
70         struct platform_device *tsi_eth_dev;
71         struct resource res;
72         int ret;
73
74         for_each_compatible_node(np, "network", "tsi108-ethernet") {
75                 struct resource r[2];
76                 struct device_node *phy, *mdio;
77                 hw_info tsi_eth_data;
78                 const unsigned int *phy_id;
79                 const void *mac_addr;
80                 const phandle *ph;
81
82                 memset(r, 0, sizeof(r));
83                 memset(&tsi_eth_data, 0, sizeof(tsi_eth_data));
84
85                 ret = of_address_to_resource(np, 0, &r[0]);
86                 DBG("%s: name:start->end = %s:0x%lx-> 0x%lx\n",
87                         __func__,r[0].name, r[0].start, r[0].end);
88                 if (ret)
89                         goto err;
90
91                 r[1].name = "tx";
92                 r[1].start = irq_of_parse_and_map(np, 0);
93                 r[1].end = irq_of_parse_and_map(np, 0);
94                 r[1].flags = IORESOURCE_IRQ;
95                 DBG("%s: name:start->end = %s:0x%lx-> 0x%lx\n",
96                         __func__,r[1].name, r[1].start, r[1].end);
97
98                 tsi_eth_dev =
99                     platform_device_register_simple("tsi-ethernet", i++, &r[0],
100                                                     1);
101
102                 if (IS_ERR(tsi_eth_dev)) {
103                         ret = PTR_ERR(tsi_eth_dev);
104                         goto err;
105                 }
106
107                 mac_addr = of_get_mac_address(np);
108                 if (mac_addr)
109                         memcpy(tsi_eth_data.mac_addr, mac_addr, 6);
110
111                 ph = of_get_property(np, "mdio-handle", NULL);
112                 mdio = of_find_node_by_phandle(*ph);
113                 ret = of_address_to_resource(mdio, 0, &res);
114                 of_node_put(mdio);
115                 if (ret)
116                         goto unreg;
117
118                 ph = of_get_property(np, "phy-handle", NULL);
119                 phy = of_find_node_by_phandle(*ph);
120
121                 if (phy == NULL) {
122                         ret = -ENODEV;
123                         goto unreg;
124                 }
125
126                 phy_id = of_get_property(phy, "reg", NULL);
127
128                 tsi_eth_data.regs = r[0].start;
129                 tsi_eth_data.phyregs = res.start;
130                 tsi_eth_data.phy = *phy_id;
131                 tsi_eth_data.irq_num = irq_of_parse_and_map(np, 0);
132
133                 /* Some boards with the TSI108 bridge (e.g. Holly)
134                  * have a miswiring of the ethernet PHYs which
135                  * requires a workaround.  The special
136                  * "txc-rxc-delay-disable" property enables this
137                  * workaround.  FIXME: Need to port the tsi108_eth
138                  * driver itself to phylib and use a non-misleading
139                  * name for the workaround flag - it's not actually to
140                  * do with the model of PHY in use */
141                 if (of_get_property(phy, "txc-rxc-delay-disable", NULL))
142                         tsi_eth_data.phy_type = TSI108_PHY_BCM54XX;
143                 of_node_put(phy);
144
145                 ret =
146                     platform_device_add_data(tsi_eth_dev, &tsi_eth_data,
147                                              sizeof(hw_info));
148                 if (ret)
149                         goto unreg;
150         }
151         return 0;
152 unreg:
153         platform_device_unregister(tsi_eth_dev);
154 err:
155         of_node_put(np);
156         return ret;
157 }
158
159 arch_initcall(tsi108_eth_of_init);