16 struct blk_gendisk ahci_gendisk0 = {0}; // 暂时硬性指定一个ahci_device  variable
90     memset(&ahci_gendisk0, 0, sizeof(ahci_gendisk0));  in ahci_init_gendisk()
91     strcpy(ahci_gendisk0.disk_name, "ahci0");  in ahci_init_gendisk()
92     ahci_gendisk0.flags = BLK_GF_AHCI;  in ahci_init_gendisk()
93     ahci_gendisk0.fops = &ahci_operation;  in ahci_init_gendisk()
94     mutex_init(&ahci_gendisk0.open_mutex);  in ahci_init_gendisk()
95     ahci_gendisk0.request_queue = &ahci_req_queue;  in ahci_init_gendisk()
97     ahci_gendisk0.private_data = __alloc_private_data();  in ahci_init_gendisk()
102     ((struct ahci_blk_private_data *)ahci_gendisk0.private_data)->ahci_ctrl_num = 0;  in ahci_init_gendisk()
103     ((struct ahci_blk_private_data *)ahci_gendisk0.private_data)->ahci_port_num = __first_port;  in ahci_init_gendisk()
105 …MBR_read_partition_table(&ahci_gendisk0, ((struct ahci_blk_private_data *)ahci_gendisk0.private_da…  in ahci_init_gendisk()
107 …struct MBR_disk_partition_table_t *ptable = ((struct ahci_blk_private_data *)ahci_gendisk0.private…  in ahci_init_gendisk()
114             ++ahci_gendisk0.part_cnt;  in ahci_init_gendisk()
116     if (ahci_gendisk0.part_cnt)  in ahci_init_gendisk()
119 …ahci_gendisk0.partition = (struct block_device *)kzalloc(ahci_gendisk0.part_cnt * sizeof(struct bl…  in ahci_init_gendisk()
128                 ahci_gendisk0.partition[cnt].bd_disk = &ahci_gendisk0;  in ahci_init_gendisk()
129                 ahci_gendisk0.partition[cnt].bd_partno = cnt;  in ahci_init_gendisk()
130                 ahci_gendisk0.partition[cnt].bd_queue = &ahci_req_queue;  in ahci_init_gendisk()
131                 ahci_gendisk0.partition[cnt].bd_sectors_num = ptable->DPTE[i].total_sectors;  in ahci_init_gendisk()
132                 ahci_gendisk0.partition[cnt].bd_start_sector = ptable->DPTE[i].starting_sector;  in ahci_init_gendisk()
133                 ahci_gendisk0.partition[cnt].bd_superblock = NULL; // 挂载文件系统时才会初始化superblock  in ahci_init_gendisk()
134                 ahci_gendisk0.partition[cnt].bd_start_LBA = ptable->DPTE[i].starting_LBA;  in ahci_init_gendisk()