79 lines
1.8 KiB
C
Executable file
79 lines
1.8 KiB
C
Executable file
#include <linux/fs.h>
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#include <linux/debugfs.h>
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#include <linux/uaccess.h>
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#include <linux/uh.h>
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#include <linux/bootmem.h>
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#ifdef CONFIG_NO_BOOTMEM
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#include <linux/memblock.h>
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#endif
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static ssize_t uh_call_write(struct file *file, const char __user *buf,
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size_t count, loff_t *ppos)
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{
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char buffer[128] = {0,};
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unsigned long missing;
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int result;
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u64 app_id = 0, command = 0, arg0 = 0, arg1 = 0, arg2 = 0, arg3 = 0;
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if (sizeof(buffer) < count + 1)
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return -EFAULT;
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missing = copy_from_user(buffer, buf, count);
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if (missing)
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return -EFAULT;
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buffer[count] = '\0';
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result = sscanf(buffer, "%llu %llu %llu %llu %llu %llu\n",
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&app_id, &command, &arg0, &arg1, &arg2, &arg3);
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pr_alert("%s app_id:%llu, command:%llu, %llu, %llu, %llu, %llu\n", __func__,
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app_id, command, arg0, arg1, arg2, arg3);
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pr_alert("%s app_id:%llu, command:%llu, %llu, %llu, %llu, %llu\n", __func__,
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app_id, command, arg0, arg1, arg2, arg3);
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switch (app_id) {
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case APP_INIT:
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uh_call(UH_APP_INIT, command, arg0, arg1, arg2, arg3);
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break;
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case APP_SAMPLE:
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uh_call(UH_APP_SAMPLE, command, arg0, arg1, arg2, arg3);
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break;
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default:
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break;
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}
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return count;
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}
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static const struct file_operations uh_call_fops = {
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.write = uh_call_write,
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};
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static int __init uh_debugfs_init(void)
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{
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int ret = 0;
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struct dentry *dir;
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struct dentry *file;
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dir = debugfs_create_dir("uh", NULL);
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if (IS_ERR_OR_NULL(dir)) {
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pr_err("failed to create uh dir in debugfs\n");
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ret = PTR_ERR(dir);
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goto init_exit;
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}
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file = debugfs_create_file("uh_call", 0660, dir, NULL,
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&uh_call_fops);
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if (IS_ERR_OR_NULL(file)) {
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debugfs_remove(dir);
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pr_err("failed to create uh_call file for uh\n");
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ret = PTR_ERR(file);
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goto init_exit;
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}
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init_exit:
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return ret;
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}
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late_initcall(uh_debugfs_init)
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