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/config.h>
  13 #include <linux/stddef.h>
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/errno.h>
  17 #include <linux/major.h>
  18 #include <linux/delay.h>
  19 #include <linux/irq.h>
  20 #include <linux/module.h>
  21 #include <linux/device.h>
  22 #include <linux/platform_device.h>
  23 #include <asm/tsi108.h>
  24
  25 #include <asm/system.h>
  26 #include <asm/atomic.h>
  27 #include <asm/io.h>
  28 #include <asm/irq.h>
  29 #include <asm/prom.h>
  30 #include <mm/mmu_decl.h>
  31
  32 #undef DEBUG
  33
  34 #ifdef DEBUG
  35 #define DBG(fmt...) do { printk(fmt); } while(0)
  36 #else
  37 #define DBG(fmt...) do { } while(0)
  38 #endif
  39
  40 static phys_addr_t tsi108_csr_base = -1;
  41
  42 phys_addr_t get_csrbase(void)
  43 {
  44         struct device_node *tsi;
  45
  46         if (tsi108_csr_base != -1)
  47                 return tsi108_csr_base;
  48
  49         tsi = of_find_node_by_type(NULL, "tsi-bridge");
  50         if (tsi) {
  51                 unsigned int size;
  52                 void *prop = get_property(tsi, "reg", &size);
  53                 tsi108_csr_base = of_translate_address(tsi, prop);
  54                 of_node_put(tsi);
  55         };
  56         return tsi108_csr_base;
  57 }
  58
  59 u32 get_vir_csrbase(void)
  60 {
  61         return (u32) (ioremap(get_csrbase(), 0x10000));
  62 }
  63
  64 EXPORT_SYMBOL(get_csrbase);
  65 EXPORT_SYMBOL(get_vir_csrbase);
  66
  67 static int __init tsi108_eth_of_init(void)
  68 {
  69         struct device_node *np;
  70         unsigned int i;
  71         struct platform_device *tsi_eth_dev;
  72         struct resource res;
  73         int ret;
  74
  75         for (np = NULL, i = 0;
  76              (np = of_find_compatible_node(np, "network", "tsi-ethernet")) != NULL;
  77              i++) {
  78                 struct resource r[2];
  79                 struct device_node *phy;
  80                 hw_info tsi_eth_data;
  81                 unsigned int *id;
  82                 unsigned int *phy_id;
  83                 void *mac_addr;
  84                 phandle *ph;
  85
  86                 memset(r, 0, sizeof(r));
  87                 memset(&tsi_eth_data, 0, sizeof(tsi_eth_data));
  88
  89                 ret = of_address_to_resource(np, 0, &r[0]);
  90                 DBG("%s: name:start->end = %s:0x%lx-> 0x%lx\n",
  91                         __FUNCTION__,r[0].name, r[0].start, r[0].end);
  92                 if (ret)
  93                         goto err;
  94
  95                 r[1].name = "tx";
  96                 r[1].start = irq_of_parse_and_map(np, 0);
  97                 r[1].end = irq_of_parse_and_map(np, 0);
  98                 r[1].flags = IORESOURCE_IRQ;
  99                 DBG("%s: name:start->end = %s:0x%lx-> 0x%lx\n",
 100                         __FUNCTION__,r[1].name, r[1].start, r[1].end);
 101
 102                 tsi_eth_dev =
 103                     platform_device_register_simple("tsi-ethernet", i, &r[0],
 104                                                     1);
 105
 106                 if (IS_ERR(tsi_eth_dev)) {
 107                         ret = PTR_ERR(tsi_eth_dev);
 108                         goto err;
 109                 }
 110
 111                 mac_addr = get_property(np, "address", NULL);
 112                 memcpy(tsi_eth_data.mac_addr, mac_addr, 6);
 113
 114                 ph = (phandle *) get_property(np, "phy-handle", NULL);
 115                 phy = of_find_node_by_phandle(*ph);
 116
 117                 if (phy == NULL) {
 118                         ret = -ENODEV;
 119                         goto unreg;
 120                 }
 121
 122                 id = (u32 *) get_property(phy, "reg", NULL);
 123                 phy_id = (u32 *) get_property(phy, "phy-id", NULL);
 124                 ret = of_address_to_resource(phy, 0, &res);
 125                 if (ret) {
 126                         of_node_put(phy);
 127                         goto unreg;
 128                 }
 129                 tsi_eth_data.regs = r[0].start;
 130                 tsi_eth_data.phyregs = res.start;
 131                 tsi_eth_data.phy = *phy_id;
 132                 tsi_eth_data.irq_num = irq_of_parse_and_map(np, 0);
 133                 of_node_put(phy);
 134                 ret =
 135                     platform_device_add_data(tsi_eth_dev, &tsi_eth_data,
 136                                              sizeof(hw_info));
 137                 if (ret)
 138                         goto unreg;
 139         }
 140         return 0;
 141 unreg:
 142         platform_device_unregister(tsi_eth_dev);
 143 err:
 144         return ret;
 145 }
 146
 147 arch_initcall(tsi108_eth_of_init);