Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * arch/ppc/syslib/ppc_sys.c |
| 3 | * |
| 4 | * PPC System library functions |
| 5 | * |
| 6 | * Maintainer: Kumar Gala <kumar.gala@freescale.com> |
| 7 | * |
| 8 | * Copyright 2005 Freescale Semiconductor Inc. |
Kumar Gala | 88adfe7 | 2005-09-03 15:55:46 -0700 | [diff] [blame] | 9 | * Copyright 2005 MontaVista, Inc. by Vitaly Bordug <vbordug@ru.mvista.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify it |
| 12 | * under the terms of the GNU General Public License as published by the |
| 13 | * Free Software Foundation; either version 2 of the License, or (at your |
| 14 | * option) any later version. |
| 15 | */ |
| 16 | |
| 17 | #include <asm/ppc_sys.h> |
| 18 | |
| 19 | int (*ppc_sys_device_fixup) (struct platform_device * pdev); |
| 20 | |
| 21 | static int ppc_sys_inited; |
| 22 | |
| 23 | void __init identify_ppc_sys_by_id(u32 id) |
| 24 | { |
| 25 | unsigned int i = 0; |
| 26 | while (1) { |
| 27 | if ((ppc_sys_specs[i].mask & id) == ppc_sys_specs[i].value) |
| 28 | break; |
| 29 | i++; |
| 30 | } |
| 31 | |
| 32 | cur_ppc_sys_spec = &ppc_sys_specs[i]; |
| 33 | |
| 34 | return; |
| 35 | } |
| 36 | |
| 37 | void __init identify_ppc_sys_by_name(char *name) |
| 38 | { |
Kumar Gala | 88adfe7 | 2005-09-03 15:55:46 -0700 | [diff] [blame] | 39 | unsigned int i = 0; |
| 40 | while (ppc_sys_specs[i].ppc_sys_name[0]) |
| 41 | { |
| 42 | if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name)) |
| 43 | break; |
| 44 | i++; |
| 45 | } |
| 46 | cur_ppc_sys_spec = &ppc_sys_specs[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | return; |
| 48 | } |
| 49 | |
Kumar Gala | 88adfe7 | 2005-09-03 15:55:46 -0700 | [diff] [blame] | 50 | static int __init count_sys_specs(void) |
| 51 | { |
| 52 | int i = 0; |
| 53 | while (ppc_sys_specs[i].ppc_sys_name[0]) |
| 54 | i++; |
| 55 | return i; |
| 56 | } |
| 57 | |
| 58 | static int __init find_chip_by_name_and_id(char *name, u32 id) |
| 59 | { |
| 60 | int ret = -1; |
| 61 | unsigned int i = 0; |
| 62 | unsigned int j = 0; |
| 63 | unsigned int dups = 0; |
| 64 | |
| 65 | unsigned char matched[count_sys_specs()]; |
| 66 | |
| 67 | while (ppc_sys_specs[i].ppc_sys_name[0]) { |
| 68 | if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name)) |
| 69 | matched[j++] = i; |
| 70 | i++; |
| 71 | } |
| 72 | if (j != 0) { |
| 73 | for (i = 0; i < j; i++) { |
| 74 | if ((ppc_sys_specs[matched[i]].mask & id) == |
| 75 | ppc_sys_specs[matched[i]].value) { |
| 76 | ret = matched[i]; |
| 77 | dups++; |
| 78 | } |
| 79 | } |
| 80 | ret = (dups == 1) ? ret : (-1 * dups); |
| 81 | } |
| 82 | return ret; |
| 83 | } |
| 84 | |
| 85 | void __init identify_ppc_sys_by_name_and_id(char *name, u32 id) |
| 86 | { |
| 87 | int i = find_chip_by_name_and_id(name, id); |
| 88 | BUG_ON(i < 0); |
| 89 | cur_ppc_sys_spec = &ppc_sys_specs[i]; |
| 90 | } |
| 91 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | /* Update all memory resources by paddr, call before platform_device_register */ |
| 93 | void __init |
| 94 | ppc_sys_fixup_mem_resource(struct platform_device *pdev, phys_addr_t paddr) |
| 95 | { |
| 96 | int i; |
| 97 | for (i = 0; i < pdev->num_resources; i++) { |
| 98 | struct resource *r = &pdev->resource[i]; |
| 99 | if ((r->flags & IORESOURCE_MEM) == IORESOURCE_MEM) { |
| 100 | r->start += paddr; |
| 101 | r->end += paddr; |
| 102 | } |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | /* Get platform_data pointer out of platform device, call before platform_device_register */ |
| 107 | void *__init ppc_sys_get_pdata(enum ppc_sys_devices dev) |
| 108 | { |
| 109 | return ppc_sys_platform_devices[dev].dev.platform_data; |
| 110 | } |
| 111 | |
| 112 | void ppc_sys_device_remove(enum ppc_sys_devices dev) |
| 113 | { |
| 114 | unsigned int i; |
| 115 | |
| 116 | if (ppc_sys_inited) { |
| 117 | platform_device_unregister(&ppc_sys_platform_devices[dev]); |
| 118 | } else { |
| 119 | if (cur_ppc_sys_spec == NULL) |
| 120 | return; |
| 121 | for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) |
| 122 | if (cur_ppc_sys_spec->device_list[i] == dev) |
| 123 | cur_ppc_sys_spec->device_list[i] = -1; |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | static int __init ppc_sys_init(void) |
| 128 | { |
| 129 | unsigned int i, dev_id, ret = 0; |
| 130 | |
| 131 | BUG_ON(cur_ppc_sys_spec == NULL); |
| 132 | |
| 133 | for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) { |
| 134 | dev_id = cur_ppc_sys_spec->device_list[i]; |
| 135 | if (dev_id != -1) { |
| 136 | if (ppc_sys_device_fixup != NULL) |
| 137 | ppc_sys_device_fixup(&ppc_sys_platform_devices |
| 138 | [dev_id]); |
| 139 | if (platform_device_register |
| 140 | (&ppc_sys_platform_devices[dev_id])) { |
| 141 | ret = 1; |
| 142 | printk(KERN_ERR |
| 143 | "unable to register device %d\n", |
| 144 | dev_id); |
| 145 | } |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | ppc_sys_inited = 1; |
| 150 | return ret; |
| 151 | } |
| 152 | |
| 153 | subsys_initcall(ppc_sys_init); |