diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/x86/kernel/kdebugfs.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/x86/kernel/kdebugfs.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/ANDROID_3.4.5/arch/x86/kernel/kdebugfs.c b/ANDROID_3.4.5/arch/x86/kernel/kdebugfs.c deleted file mode 100644 index 1d5d31ea..00000000 --- a/ANDROID_3.4.5/arch/x86/kernel/kdebugfs.c +++ /dev/null @@ -1,212 +0,0 @@ -/* - * Architecture specific debugfs files - * - * Copyright (C) 2007, Intel Corp. - * Huang Ying <ying.huang@intel.com> - * - * This file is released under the GPLv2. - */ -#include <linux/debugfs.h> -#include <linux/uaccess.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/stat.h> -#include <linux/io.h> -#include <linux/mm.h> - -#include <asm/setup.h> - -struct dentry *arch_debugfs_dir; -EXPORT_SYMBOL(arch_debugfs_dir); - -#ifdef CONFIG_DEBUG_BOOT_PARAMS -struct setup_data_node { - u64 paddr; - u32 type; - u32 len; -}; - -static ssize_t setup_data_read(struct file *file, char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct setup_data_node *node = file->private_data; - unsigned long remain; - loff_t pos = *ppos; - struct page *pg; - void *p; - u64 pa; - - if (pos < 0) - return -EINVAL; - - if (pos >= node->len) - return 0; - - if (count > node->len - pos) - count = node->len - pos; - - pa = node->paddr + sizeof(struct setup_data) + pos; - pg = pfn_to_page((pa + count - 1) >> PAGE_SHIFT); - if (PageHighMem(pg)) { - p = ioremap_cache(pa, count); - if (!p) - return -ENXIO; - } else - p = __va(pa); - - remain = copy_to_user(user_buf, p, count); - - if (PageHighMem(pg)) - iounmap(p); - - if (remain) - return -EFAULT; - - *ppos = pos + count; - - return count; -} - -static const struct file_operations fops_setup_data = { - .read = setup_data_read, - .open = simple_open, - .llseek = default_llseek, -}; - -static int __init -create_setup_data_node(struct dentry *parent, int no, - struct setup_data_node *node) -{ - struct dentry *d, *type, *data; - char buf[16]; - - sprintf(buf, "%d", no); - d = debugfs_create_dir(buf, parent); - if (!d) - return -ENOMEM; - - type = debugfs_create_x32("type", S_IRUGO, d, &node->type); - if (!type) - goto err_dir; - - data = debugfs_create_file("data", S_IRUGO, d, node, &fops_setup_data); - if (!data) - goto err_type; - - return 0; - -err_type: - debugfs_remove(type); -err_dir: - debugfs_remove(d); - return -ENOMEM; -} - -static int __init create_setup_data_nodes(struct dentry *parent) -{ - struct setup_data_node *node; - struct setup_data *data; - int error = -ENOMEM; - struct dentry *d; - struct page *pg; - u64 pa_data; - int no = 0; - - d = debugfs_create_dir("setup_data", parent); - if (!d) - return -ENOMEM; - - pa_data = boot_params.hdr.setup_data; - - while (pa_data) { - node = kmalloc(sizeof(*node), GFP_KERNEL); - if (!node) - goto err_dir; - - pg = pfn_to_page((pa_data+sizeof(*data)-1) >> PAGE_SHIFT); - if (PageHighMem(pg)) { - data = ioremap_cache(pa_data, sizeof(*data)); - if (!data) { - kfree(node); - error = -ENXIO; - goto err_dir; - } - } else - data = __va(pa_data); - - node->paddr = pa_data; - node->type = data->type; - node->len = data->len; - error = create_setup_data_node(d, no, node); - pa_data = data->next; - - if (PageHighMem(pg)) - iounmap(data); - if (error) - goto err_dir; - no++; - } - - return 0; - -err_dir: - debugfs_remove(d); - return error; -} - -static struct debugfs_blob_wrapper boot_params_blob = { - .data = &boot_params, - .size = sizeof(boot_params), -}; - -static int __init boot_params_kdebugfs_init(void) -{ - struct dentry *dbp, *version, *data; - int error = -ENOMEM; - - dbp = debugfs_create_dir("boot_params", NULL); - if (!dbp) - return -ENOMEM; - - version = debugfs_create_x16("version", S_IRUGO, dbp, - &boot_params.hdr.version); - if (!version) - goto err_dir; - - data = debugfs_create_blob("data", S_IRUGO, dbp, - &boot_params_blob); - if (!data) - goto err_version; - - error = create_setup_data_nodes(dbp); - if (error) - goto err_data; - - return 0; - -err_data: - debugfs_remove(data); -err_version: - debugfs_remove(version); -err_dir: - debugfs_remove(dbp); - return error; -} -#endif /* CONFIG_DEBUG_BOOT_PARAMS */ - -static int __init arch_kdebugfs_init(void) -{ - int error = 0; - - arch_debugfs_dir = debugfs_create_dir("x86", NULL); - if (!arch_debugfs_dir) - return -ENOMEM; - -#ifdef CONFIG_DEBUG_BOOT_PARAMS - error = boot_params_kdebugfs_init(); -#endif - - return error; -} -arch_initcall(arch_kdebugfs_init); |