sd卡的驱动程序linux

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/blkdev.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/hdreg.h>

static struct request_queue *sd_card_queue;
static struct gendisk *sd_card_disk;

static int sd_card_init(void) {
    sd_card_queue = blk_init_queue(sd_card_request, NULL);
    if (!sd_card_queue) {
        printk(KERN_ERR "Unable to initialize SD card request queue\n");
        return -1;
    }

    sd_card_disk = alloc_disk(1);
    if (!sd_card_disk) {
        printk(KERN_ERR "Unable to allocate SD card disk\n");
        blk_cleanup_queue(sd_card_queue);
        return -1;
    }

    sd_card_disk->queue = sd_card_queue;
    sd_card_disk->major = 0;
    sd_card_disk->first_minor = 0;
    sd_card_disk->fops = &sd_card_fops;
    strcpy(sd_card_disk->disk_name, "sd_card");

    add_disk(sd_card_disk);
    printk(KERN_INFO "SD card driver initialized\n");
    return 0;
}

static void sd_card_exit(void) {
    del_gendisk(sd_card_disk);
    put_disk(sd_card_disk);
    blk_cleanup_queue(sd_card_queue);
    printk(KERN_INFO "SD card driver removed\n");
}

module_init(sd_card_init);
module_exit(sd_card_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Your Name");
MODULE_DESCRIPTION("SD Card Driver");