将具体磁盘类型与fat32文件系统进行分离

.vscode/settings.json

@@ -129,7 +129,10 @@
         "proc-types.h": "c",
         "traceback.h": "c",
         "bitcount.h": "c",
-        "limits.h": "c"
+        "limits.h": "c",
+        "block.h": "c",
+        "blk_types.h": "c",
+        "mutex.h": "c"
     },
     "C_Cpp.errorSquiggles": "Enabled",
     "esbonio.sphinx.confDir": ""

kernel/common/blk_types.h

@@ -16,7 +16,18 @@ struct block_device_operation
     long (*open)();
     long (*close)();
     long (*ioctl)(long cmd, long arg);
-    long (*transfer)(long cmd, ul LBA_start, ul count, uint64_t buffer, uint8_t arg0, uint8_t arg1);
+    
+    /**
+     * @brief 块设备驱动程序的传输函数
+     *
+     * @param gd 磁盘设备结构体
+     * @param cmd 控制命令
+     * @param base_addr 48位LBA地址
+     * @param count total sectors to read
+     * @param buf 缓冲区线性地址
+     * @return long
+     */
+    long (*transfer)(struct blk_gendisk *gd, long cmd, uint64_t base_addr, uint64_t count, uint64_t buf);
 };
 
 /**
@@ -54,6 +65,7 @@ struct block_device_request_queue
 struct block_device
 {
     sector_t bd_start_sector;                    // 该分区的起始扇区
+    uint64_t bd_start_LBA;                       // 起始LBA号
     sector_t bd_sectors_num;                     // 该分区的扇区数
     struct vfs_superblock_t *bd_superblock;      // 执行超级块的指针
     struct blk_gendisk *bd_disk;                 // 当前分区所属的磁盘
@@ -61,6 +73,9 @@ struct block_device
     uint16_t bd_partno;                          // 在磁盘上的分区号
 };
 
+// 定义blk_gendisk中的标志位
+#define BLK_GF_AHCI (1 << 0)
+
 /**
  * @brief 磁盘设备结构体
  *

kernel/common/block.h

@@ -0,0 +1,10 @@
+#pragma once
+#include "blk_types.h"
+
+/**
+ * @brief 将磁盘注册到块设备框架中
+ * 
+ * @param gendisk 磁盘结构体
+ * @return int 错误码
+ */
+int blk_register_gendisk(struct blk_gendisk * gendisk);

kernel/common/mutex.h

@@ -3,7 +3,7 @@
 #include <common/atomic.h>
 #include <common/spinlock.h>
 #include <common/glib.h>
-#include <process/process.h>
+#include <process/proc-types.h>
 
 /**
  * @brief Mutex - 互斥锁

kernel/driver/disk/ahci/ahci.c

@@ -4,12 +4,17 @@
 #include <syscall/syscall.h>
 #include <syscall/syscall_num.h>
 #include <sched/sched.h>
+#include <common/string.h>
+#include <common/block.h>
+#include <filesystem/MBR.h>
 
 struct pci_device_structure_header_t *ahci_devs[MAX_AHCI_DEVICES];
 
 struct block_device_request_queue ahci_req_queue;
 
-uint32_t count_ahci_devices = 0;
+struct blk_gendisk ahci_gendisk0 = {0}; // 暂时硬性指定一个ahci_device
+
+static uint32_t count_ahci_devices = 0;
 
 static uint64_t ahci_port_base_vaddr;     // 端口映射base addr
 static uint64_t ahci_port_base_phys_addr; // 端口映射的物理基地址（ahci控制器的参数的地址都是物理地址）
@@ -25,6 +30,113 @@ static int ahci_find_cmdslot(HBA_PORT *port);
 // 计算HBA_MEM的虚拟内存地址
 #define cal_HBA_MEM_VIRT_ADDR(device_num) (AHCI_MAPPING_BASE + (ul)(((struct pci_device_structure_general_device_t *)(ahci_devs[device_num]))->BAR5 - ((((struct pci_device_structure_general_device_t *)(ahci_devs[0]))->BAR5) & PAGE_2M_MASK)))
 
+long ahci_open();
+long ahci_close();
+static long ahci_ioctl(long cmd, long arg);
+static long ahci_transfer(struct blk_gendisk *gd, long cmd, uint64_t base_addr, uint64_t count, uint64_t buf);
+
+struct block_device_operation ahci_operation =
+    {
+        .open = ahci_open,
+        .close = ahci_close,
+        .ioctl = ahci_ioctl,
+        .transfer = ahci_transfer,
+};
+
+/**
+ * @brief ahci驱动器在block_device中的私有数据结构体
+ *
+ */
+struct ahci_blk_private_data
+{
+    uint16_t ahci_ctrl_num;                        // ahci控制器号
+    uint16_t ahci_port_num;                        // ahci端口号
+    struct MBR_disk_partition_table_t *part_table; // 分区表
+};
+
+/**
+ * @brief 申请ahci设备的私有信息结构体
+ *
+ * @return struct ahci_blk_private_data* 申请到的私有信息结构体
+ */
+static struct ahci_blk_private_data *__alloc_private_data()
+{
+    struct ahci_blk_private_data *data = (struct ahci_blk_private_data *)kzalloc(sizeof(struct ahci_blk_private_data), 0);
+    data->part_table = (struct MBR_disk_partition_table_t *)kzalloc(512, 0);
+    return data;
+}
+
+/**
+ * @brief 释放ahci设备的分区的私有信息结构体
+ *
+ * @param pdata 待释放的结构体
+ * @return int 错误码
+ */
+static int __release_private_data(struct ahci_blk_private_data *pdata)
+{
+    kfree(pdata->part_table);
+    kfree(pdata);
+    return 0;
+}
+
+/**
+ * @brief 初始化gendisk结构体(暂时只支持1个gendisk)
+ *
+ */
+static int ahci_init_gendisk()
+{
+    memset(&ahci_gendisk0, 0, sizeof(ahci_gendisk0));
+    strcpy(ahci_gendisk0.disk_name, "ahci0");
+    ahci_gendisk0.flags = BLK_GF_AHCI;
+    ahci_gendisk0.fops = &ahci_operation;
+    mutex_init(&ahci_gendisk0.open_mutex);
+    ahci_gendisk0.request_queue = &ahci_req_queue;
+    // 为存储分区结构，分配内存空间
+    ahci_gendisk0.private_data = __alloc_private_data();
+    // 读取分区表
+    // 暂时假设全都是MBR分区表的
+    // todo: 支持GPT
+
+    ((struct ahci_blk_private_data *)ahci_gendisk0.private_data)->ahci_ctrl_num = 0;
+    ((struct ahci_blk_private_data *)ahci_gendisk0.private_data)->ahci_port_num = 0;
+
+    MBR_read_partition_table(&ahci_gendisk0, ((struct ahci_blk_private_data *)ahci_gendisk0.private_data)->part_table);
+    struct MBR_disk_partition_table_t *ptable = ((struct ahci_blk_private_data *)ahci_gendisk0.private_data)->part_table;
+
+    // 求出可用分区数量
+    for (int i = 0; i < 4; ++i)
+    {
+        // 分区可用
+        if (ptable->DPTE[i].type !=0)
+            ++ahci_gendisk0.part_cnt;
+    }
+    if (ahci_gendisk0.part_cnt)
+    {
+        // 分配分区结构体数组的空间
+        ahci_gendisk0.partition = (struct block_device *)kzalloc(ahci_gendisk0.part_cnt * sizeof(struct block_device), 0);
+        int cnt = 0;
+        // 循环遍历每个分区
+        for (int i = 0; i < 4; ++i)
+        {
+            // 分区可用
+            if (ptable->DPTE[i].type !=0)
+            {
+                // 初始化分区结构体
+                ahci_gendisk0.partition[cnt].bd_disk = &ahci_gendisk0;
+                ahci_gendisk0.partition[cnt].bd_partno = cnt;
+                ahci_gendisk0.partition[cnt].bd_queue = &ahci_req_queue;
+                ahci_gendisk0.partition[cnt].bd_sectors_num = ptable->DPTE[i].total_sectors;
+                ahci_gendisk0.partition[cnt].bd_start_sector = ptable->DPTE[i].starting_sector;
+                ahci_gendisk0.partition[cnt].bd_superblock = NULL; // 挂载文件系统时才会初始化superblock
+                ahci_gendisk0.partition[cnt].bd_start_LBA = ptable->DPTE[i].starting_LBA;
+                ++cnt;
+            }
+        }
+    }
+
+    return 0;
+};
+
 /**
  * @brief 初始化ahci模块
  *
@@ -65,6 +177,8 @@ void ahci_init()
     ahci_req_queue.in_service = NULL;
     wait_queue_init(&ahci_req_queue.wait_queue_list, NULL);
     ahci_req_queue.request_count = 0;
+
+    ahci_init_gendisk();
     kinfo("AHCI initialized.");
 }
 
@@ -362,7 +476,7 @@ static bool ahci_write(HBA_PORT *port, uint32_t startl, uint32_t starth, uint32_
     cmdfis->counth = count >> 8;
     //    printk("[slot]{%d}", slot);
     port->ci = 1; // Issue command
-    
+
     current_pcb->flags |= PF_NEED_SCHED;
     sched();
     int retval = AHCI_SUCCESS;
@@ -486,9 +600,8 @@ static long ahci_query_disk()
     list_del(&(ahci_req_queue.in_service->wait_queue.wait_list));
     --ahci_req_queue.request_count;
 
-    long ret_val;
+    long ret_val = 0;
 
-    
     switch (pack->blk_pak.cmd)
     {
     case AHCI_CMD_READ_DMA_EXT:
@@ -524,21 +637,21 @@ static void ahci_submit(struct ahci_request_packet_t *pack)
 /**
  * @brief ahci驱动程序的传输函数
  *
+ * @param gd 磁盘设备结构体
  * @param cmd 控制命令
  * @param base_addr 48位LBA地址
  * @param count total sectors to read
  * @param buf 缓冲区线性地址
- * @param ahci_ctrl_num ahci控制器号
- * @param port_num ahci控制器端口号
  * @return long
  */
-static long ahci_transfer(long cmd, uint64_t base_addr, uint64_t count, uint64_t buf, uint8_t ahci_ctrl_num, uint8_t port_num)
+static long ahci_transfer(struct blk_gendisk *gd, long cmd, uint64_t base_addr, uint64_t count, uint64_t buf)
 {
     struct ahci_request_packet_t *pack = NULL;
+    struct ahci_blk_private_data *pdata = (struct ahci_blk_private_data *)gd->private_data;
 
     if (cmd == AHCI_CMD_READ_DMA_EXT || cmd == AHCI_CMD_WRITE_DMA_EXT)
     {
-        pack = ahci_make_request(cmd, base_addr, count, buf, ahci_ctrl_num, port_num);
+        pack = ahci_make_request(cmd, base_addr, count, buf, pdata->ahci_ctrl_num, pdata->ahci_port_num);
         ahci_submit(pack);
     }
     else
@@ -557,10 +670,3 @@ static long ahci_transfer(long cmd, uint64_t base_addr, uint64_t count, uint64_t
 static long ahci_ioctl(long cmd, long arg)
 {
 }
-struct block_device_operation ahci_operation =
-    {
-        .open = ahci_open,
-        .close = ahci_close,
-        .ioctl = ahci_ioctl,
-        .transfer = ahci_transfer,
-};

kernel/driver/usb/usb.c

@@ -1,6 +1,7 @@
 #include "usb.h"
 #include "xhci/xhci.h"
 #include <common/kprint.h>
+#include <common/errno.h>
 #include <driver/pci/pci.h>
 #include <debug/bug.h>
 #include <common/spinlock.h>
@@ -28,7 +29,7 @@ int usb_init()
     if (WARN_ON(usb_pdevs_count == 0))
     {
         kwarn("There is no usb hardware in this computer!");
-        return;
+        return 0;
     }
     kdebug("usb_pdevs_count=%d", usb_pdevs_count);
     // 初始化每个usb控制器
@@ -54,7 +55,7 @@ int usb_init()
 
         default:
             kerror("Error value of usb_pdevs[%d]->ProgIF: %#02x", i, usb_pdevs[i]->ProgIF);
-            return;
+            return -EINVAL;
             break;
         }
     }

kernel/driver/usb/xhci/xhci.c

@@ -1704,7 +1704,7 @@ void xhci_init(struct pci_device_structure_general_device_t *dev_hdr)
         // 创建scratchpad buffers
         for (int i = 0; i < max_scratchpad_buf; ++i)
         {
-            uint64_t buf_vaddr = kzalloc(xhci_hc[cid].page_size, 0);
+            uint64_t buf_vaddr = (uint64_t)kzalloc(xhci_hc[cid].page_size, 0);
             __write8b(xhci_hc[cid].scratchpad_buf_array_vaddr, virt_2_phys(buf_vaddr));
         }
     }

kernel/filesystem/MBR.c

@@ -9,12 +9,9 @@ struct MBR_disk_partition_table_t MBR_partition_tables[MBR_MAX_AHCI_CTRL_NUM][MB
  *
  * @param ahci_ctrl_num ahci控制器编号
  * @param ahci_port_num ahci端口编号
+ * @param buf 输出缓冲区（512字节）
  */
-struct MBR_disk_partition_table_t *MBR_read_partition_table(uint8_t ahci_ctrl_num, uint8_t ahci_port_num)
+int MBR_read_partition_table(struct blk_gendisk *gd, void *buf)
 {
-    unsigned char buf[512];
-    memset(buf, 0, 512);
-    ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, 0, 1, (uint64_t)&buf, ahci_ctrl_num, ahci_port_num);
-    MBR_partition_tables[ahci_ctrl_num][ahci_port_num] = *(struct MBR_disk_partition_table_t *)buf;
-    return &MBR_partition_tables[ahci_ctrl_num][ahci_port_num];
+    return gd->fops->transfer(gd, AHCI_CMD_READ_DMA_EXT, 0, 1, (uint64_t)buf);
 }

kernel/filesystem/MBR.h

@@ -10,6 +10,7 @@
  */
 #pragma once
 #include <common/glib.h>
+#include <common/blk_types.h>
 
 #define MBR_MAX_AHCI_CTRL_NUM 4  // 系统支持的最大的ahci控制器数量
 #define MBR_MAX_AHCI_PORT_NUM 32 // 系统支持的每个ahci控制器对应的MBR磁盘数量（对应ahci磁盘号）
@@ -53,5 +54,6 @@ extern struct MBR_disk_partition_table_t MBR_partition_tables[MBR_MAX_AHCI_CTRL_
  *
  * @param ahci_ctrl_num ahci控制器编号
  * @param ahci_port_num ahci端口编号
+ * @param buf 输出缓冲区（512字节）
  */
-struct MBR_disk_partition_table_t *MBR_read_partition_table(uint8_t ahci_ctrl_num, uint8_t ahci_port_num);
+int MBR_read_partition_table(struct blk_gendisk* gd, void *buf);

kernel/filesystem/VFS/VFS.c

@@ -15,12 +15,10 @@ static struct vfs_filesystem_type_t vfs_fs = {"filesystem", 0};
  * @brief 挂载文件系统
  *
  * @param name 文件系统名
- * @param DPTE 分区表entry
- * @param DPT_type 分区表类型
- * @param buf 文件系统的引导扇区
+ * @param blk 块设备结构体
  * @return struct vfs_superblock_t*
  */
-struct vfs_superblock_t *vfs_mount_fs(char *name, void *DPTE, uint8_t DPT_type, void *buf, int8_t ahci_ctrl_num, int8_t ahci_port_num, int8_t part_num)
+struct vfs_superblock_t *vfs_mount_fs(char *name, struct block_device *blk)
 {
 
     struct vfs_filesystem_type_t *p = NULL;
@@ -28,7 +26,7 @@ struct vfs_superblock_t *vfs_mount_fs(char *name, void *DPTE, uint8_t DPT_type,
     {
         if (!strcmp(p->name, name)) // 存在符合的文件系统
         {
-            return p->read_superblock(DPTE, DPT_type, buf, ahci_ctrl_num, ahci_port_num, part_num);
+            return p->read_superblock(blk);
         }
     }
     kdebug("unsupported fs: %s", name);

kernel/filesystem/VFS/VFS.h

@@ -13,6 +13,7 @@
 
 #include <common/glib.h>
 #include <common/fcntl.h>
+#include <common/blk_types.h>
 
 struct vfs_superblock_t *vfs_root_sb = NULL;
 
@@ -53,6 +54,7 @@ struct vfs_superblock_t
 {
     struct vfs_dir_entry_t *root;
     struct vfs_super_block_operations_t *sb_ops;
+    struct block_device * blk_device;
     void *private_sb_info;
 };
 
@@ -91,7 +93,7 @@ struct vfs_filesystem_type_t
 {
     char *name;
     int fs_flags;
-    struct vfs_superblock_t *(*read_superblock)(void *DPTE, uint8_t DPT_type, void *buf, int8_t ahci_ctrl_num, int8_t ahci_port_num, int8_t part_num); // 解析文件系统引导扇区的函数，为文件系统创建超级块结构。其中DPTE为磁盘分区表entry（MBR、GPT不同）
+    struct vfs_superblock_t *(*read_superblock)(struct block_device *blk); // 解析文件系统引导扇区的函数，为文件系统创建超级块结构。
     struct vfs_filesystem_type_t *next;
 };
 
@@ -174,12 +176,10 @@ uint64_t vfs_unregister_filesystem(struct vfs_filesystem_type_t *fs);
  * @brief 挂载文件系统
  *
  * @param name 文件系统名
- * @param DPTE 分区表entry
- * @param DPT_type 分区表类型
- * @param buf 文件系统的引导扇区
+ * @param blk 块设备结构体
  * @return struct vfs_superblock_t*
  */
-struct vfs_superblock_t *vfs_mount_fs(char *name, void *DPTE, uint8_t DPT_type, void *buf, int8_t ahci_ctrl_num, int8_t ahci_port_num, int8_t part_num);
+struct vfs_superblock_t *vfs_mount_fs(char *name, struct block_device *blk);
 
 /**
  * @brief 按照路径查找文件

kernel/filesystem/block.c

@@ -0,0 +1,13 @@
+#include <common/block.h>
+
+/**
+ * @brief 将磁盘注册到块设备框架中
+ * 
+ * @param gendisk 磁盘结构体
+ * @return int 错误码
+ */
+int blk_register_gendisk(struct blk_gendisk * gendisk)
+{
+    // todo: 将磁盘注册到devfs中
+    return 0;
+}

kernel/filesystem/devfs/devfs.c

@@ -0,0 +1,10 @@
+#include "devfs.h"
+
+/**
+ * @brief 初始化devfs
+ * 
+ */
+void devfs_init()
+{
+    
+}

kernel/filesystem/devfs/devfs.h

@@ -0,0 +1,7 @@
+#pragma once
+
+/**
+ * @brief 初始化devfs
+ * 
+ */
+void devfs_init();

kernel/filesystem/fat32/fat32.c

@@ -13,6 +13,8 @@ struct vfs_dir_entry_operations_t fat32_dEntry_ops;
 struct vfs_file_operations_t fat32_file_ops;
 struct vfs_inode_operations_t fat32_inode_ops;
 
+extern struct blk_gendisk ahci_gendisk0;
+
 /**
  * @brief 注册指定磁盘上的指定分区的fat32文件系统
  *
@@ -25,18 +27,8 @@ struct vfs_inode_operations_t fat32_inode_ops;
 struct vfs_superblock_t *fat32_register_partition(uint8_t ahci_ctrl_num, uint8_t ahci_port_num, uint8_t part_num)
 {
 
-    struct MBR_disk_partition_table_t *DPT = MBR_read_partition_table(ahci_ctrl_num, ahci_port_num);
-
-    //	for(i = 0 ;i < 512 ; i++)
-    //		color_printk(PURPLE,WHITE,"%02x",buf[i]);
-    printk_color(ORANGE, BLACK, "DPTE[0] start_LBA:%#018lx\ttype:%#018lx\n", DPT->DPTE[part_num].starting_LBA, DPT->DPTE[part_num].type);
-    uint8_t buf[512] = {0};
-
-    // 读取文件系统的boot扇区
-    ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, DPT->DPTE[part_num].starting_LBA, 1, (uint64_t)&buf, ahci_ctrl_num, ahci_port_num);
-
     // 挂载文件系统到vfs
-    return vfs_mount_fs("FAT32", (void *)(&DPT->DPTE[part_num]), VFS_DPT_MBR, buf, ahci_ctrl_num, ahci_port_num, part_num);
+    return vfs_mount_fs("FAT32", (ahci_gendisk0.partition + 0));
 }
 
 /**
@@ -69,9 +61,9 @@ struct vfs_dir_entry_t *fat32_lookup(struct vfs_index_node_t *parent_inode, stru
 
     struct fat32_inode_info_t *finode = (struct fat32_inode_info_t *)parent_inode->private_inode_info;
     fat32_sb_info_t *fsbi = (fat32_sb_info_t *)parent_inode->sb->private_sb_info;
+    struct block_device *blk = parent_inode->sb->blk_device;
 
-    uint8_t *buf = kmalloc(fsbi->bytes_per_clus, 0);
-    memset(buf, 0, fsbi->bytes_per_clus);
+    uint8_t *buf = kzalloc(fsbi->bytes_per_clus, 0);
 
     // 计算父目录项的起始簇号
     uint32_t cluster = finode->first_clus;
@@ -87,8 +79,7 @@ struct vfs_dir_entry_t *fat32_lookup(struct vfs_index_node_t *parent_inode, stru
         // kdebug("sector=%d",sector);
 
         // 读取父目录项的起始簇数据
-        ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)buf, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
-        // ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, sector, fat32_part_info[part_id].bootsector.BPB_SecPerClus, (uint64_t)buf, fat32_part_info[part_id].ahci_ctrl_num, fat32_part_info[part_id].ahci_port_num);
+        blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_READ_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)buf);
 
         tmp_dEntry = (struct fat32_Directory_t *)buf;
 
@@ -287,7 +278,7 @@ struct vfs_dir_entry_t *fat32_lookup(struct vfs_index_node_t *parent_inode, stru
         }
 
         // 当前簇没有发现目标文件名，寻找下一个簇
-        cluster = fat32_read_FAT_entry(fsbi, cluster);
+        cluster = fat32_read_FAT_entry(blk, fsbi, cluster);
 
         if (cluster >= 0x0ffffff7) // 寻找完父目录的所有簇，都没有找到目标文件名
         {
@@ -314,7 +305,7 @@ find_lookup_success:; // 找到目标dentry
 
     finode->first_clus = ((tmp_dEntry->DIR_FstClusHI << 16) | tmp_dEntry->DIR_FstClusLO) & 0x0fffffff;
     finode->dEntry_location_clus = cluster;
-    finode->dEntry_location_clus_offset = tmp_dEntry - (struct fat32_Directory_t *)buf; //计算dentry的偏移量
+    finode->dEntry_location_clus_offset = tmp_dEntry - (struct fat32_Directory_t *)buf; // 计算dentry的偏移量
     // kdebug("finode->dEntry_location_clus=%#018lx", finode->dEntry_location_clus);
     // kdebug("finode->dEntry_location_clus_offset=%#018lx", finode->dEntry_location_clus_offset);
     finode->create_date = tmp_dEntry->DIR_CrtDate;
@@ -339,44 +330,33 @@ find_lookup_success:; // 找到目标dentry
 /**
  * @brief 创建fat32文件系统的超级块
  *
- * @param DPTE 磁盘分区表entry
- * @param DPT_type 磁盘分区表类型
- * @param buf fat32文件系统的引导扇区
+ * @param blk 块设备结构体
  * @return struct vfs_superblock_t* 创建好的超级块
  */
-struct vfs_superblock_t *fat32_read_superblock(void *DPTE, uint8_t DPT_type, void *buf, int8_t ahci_ctrl_num, int8_t ahci_port_num, int8_t part_num)
+struct vfs_superblock_t *fat32_read_superblock(struct block_device *blk)
 {
-    if (DPT_type != VFS_DPT_MBR) // 暂时只支持MBR分区表
-    {
-        kerror("fat32_read_superblock(): Unsupported DPT!");
-        return NULL;
-    }
+    // 读取文件系统的boot扇区
+    uint8_t buf[512] = {0};
+    blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_READ_DMA_EXT, blk->bd_start_LBA, 1, (uint64_t)&buf);
 
     // 分配超级块的空间
-    struct vfs_superblock_t *sb_ptr = (struct vfs_superblock_t *)kmalloc(sizeof(struct vfs_superblock_t), 0);
-    memset(sb_ptr, 0, sizeof(struct vfs_superblock_t));
-
+    struct vfs_superblock_t *sb_ptr = (struct vfs_superblock_t *)kzalloc(sizeof(struct vfs_superblock_t), 0);
+    blk->bd_superblock = sb_ptr;
     sb_ptr->sb_ops = &fat32_sb_ops;
-    sb_ptr->private_sb_info = kmalloc(sizeof(fat32_sb_info_t), 0);
-    memset(sb_ptr->private_sb_info, 0, sizeof(fat32_sb_info_t));
+    sb_ptr->private_sb_info = kzalloc(sizeof(fat32_sb_info_t), 0);
+    sb_ptr->blk_device = blk;
 
     struct fat32_BootSector_t *fbs = (struct fat32_BootSector_t *)buf;
 
     fat32_sb_info_t *fsbi = (fat32_sb_info_t *)(sb_ptr->private_sb_info);
 
-    // MBR分区表entry
-    struct MBR_disk_partition_table_entry_t *MBR_DPTE = (struct MBR_disk_partition_table_entry_t *)DPTE;
-    fsbi->ahci_ctrl_num = ahci_ctrl_num;
-    fsbi->ahci_port_num = ahci_port_num;
-    fsbi->part_num = part_num;
-
-    fsbi->starting_sector = MBR_DPTE->starting_LBA;
-    fsbi->sector_count = MBR_DPTE->total_sectors;
+    fsbi->starting_sector = blk->bd_start_LBA;
+    fsbi->sector_count = blk->bd_sectors_num;
     fsbi->sec_per_clus = fbs->BPB_SecPerClus;
     fsbi->bytes_per_clus = fbs->BPB_SecPerClus * fbs->BPB_BytesPerSec;
     fsbi->bytes_per_sec = fbs->BPB_BytesPerSec;
-    fsbi->first_data_sector = MBR_DPTE->starting_LBA + fbs->BPB_RsvdSecCnt + fbs->BPB_FATSz32 * fbs->BPB_NumFATs;
-    fsbi->FAT1_base_sector = MBR_DPTE->starting_LBA + fbs->BPB_RsvdSecCnt;
+    fsbi->first_data_sector = blk->bd_start_LBA + fbs->BPB_RsvdSecCnt + fbs->BPB_FATSz32 * fbs->BPB_NumFATs;
+    fsbi->FAT1_base_sector = blk->bd_start_LBA + fbs->BPB_RsvdSecCnt;
     fsbi->FAT2_base_sector = fsbi->FAT1_base_sector + fbs->BPB_FATSz32;
     fsbi->sec_per_FAT = fbs->BPB_FATSz32;
     fsbi->NumFATs = fbs->BPB_NumFATs;
@@ -387,7 +367,8 @@ struct vfs_superblock_t *fat32_read_superblock(void *DPTE, uint8_t DPT_type, voi
 
     // fsinfo扇区的信息
     memset(&fsbi->fsinfo, 0, sizeof(struct fat32_FSInfo_t));
-    ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, MBR_DPTE->starting_LBA + fbs->BPB_FSInfo, 1, (uint64_t)&fsbi->fsinfo, ahci_ctrl_num, ahci_port_num);
+    blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_READ_DMA_EXT, blk->bd_start_LBA + fsbi->fsinfo_sector_addr_infat, 1, (uint64_t)&fsbi->fsinfo);
+
     printk_color(BLUE, BLACK, "FAT32 FSInfo\n\tFSI_LeadSig:%#018lx\n\tFSI_StrucSig:%#018lx\n\tFSI_Free_Count:%#018lx\n", fsbi->fsinfo.FSI_LeadSig, fsbi->fsinfo.FSI_StrucSig, fsbi->fsinfo.FSI_Free_Count);
 
     // 初始化超级块的dir entry
@@ -476,8 +457,8 @@ void fat32_write_inode(struct vfs_index_node_t *inode)
 
     struct fat32_Directory_t *buf = (struct fat32_Directory_t *)kmalloc(fsbi->bytes_per_clus, 0);
     memset(buf, 0, fsbi->bytes_per_clus);
-    ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, fLBA, fsbi->sec_per_clus, (uint64_t)buf, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
 
+    inode->sb->blk_device->bd_disk->fops->transfer(inode->sb->blk_device->bd_disk, AHCI_CMD_READ_DMA_EXT, fLBA, fsbi->sec_per_clus, (uint64_t)buf);
     // 计算目标dEntry所在的位置
     struct fat32_Directory_t *fdEntry = buf + finode->dEntry_location_clus_offset;
 
@@ -487,8 +468,7 @@ void fat32_write_inode(struct vfs_index_node_t *inode)
     fdEntry->DIR_FstClusHI = (finode->first_clus >> 16) | (fdEntry->DIR_FstClusHI & 0xf000);
 
     // 将dir entry写回磁盘
-    ahci_operation.transfer(AHCI_CMD_WRITE_DMA_EXT, fLBA, fsbi->sec_per_clus, (uint64_t)buf, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
-
+    inode->sb->blk_device->bd_disk->fops->transfer(inode->sb->blk_device->bd_disk, AHCI_CMD_WRITE_DMA_EXT, fLBA, fsbi->sec_per_clus, (uint64_t)buf);
     kfree(buf);
 }
 
@@ -554,6 +534,7 @@ long fat32_read(struct vfs_file_t *file_ptr, char *buf, int64_t count, long *pos
 
     struct fat32_inode_info_t *finode = (struct fat32_inode_info_t *)(file_ptr->dEntry->dir_inode->private_inode_info);
     fat32_sb_info_t *fsbi = (fat32_sb_info_t *)(file_ptr->dEntry->dir_inode->sb->private_sb_info);
+    struct block_device *blk = file_ptr->dEntry->dir_inode->sb->blk_device;
 
     // First cluster num of the file
     uint64_t cluster = finode->first_clus;
@@ -571,7 +552,7 @@ long fat32_read(struct vfs_file_t *file_ptr, char *buf, int64_t count, long *pos
 
     // find the actual cluster on disk of the specified position
     for (int i = 0; i < clus_offset_in_file; ++i)
-        cluster = fat32_read_FAT_entry(fsbi, cluster);
+        cluster = fat32_read_FAT_entry(blk,fsbi, cluster);
 
     // 如果需要读取的数据边界大于文件大小
     if (*position + count > file_ptr->dEntry->dir_inode->file_size)
@@ -591,7 +572,7 @@ long fat32_read(struct vfs_file_t *file_ptr, char *buf, int64_t count, long *pos
         uint64_t sector = fsbi->first_data_sector + (cluster - 2) * fsbi->sec_per_clus;
 
         // 读取一个簇的数据
-        int errno = ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)tmp_buffer, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
+        int errno = blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_READ_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)tmp_buffer);
         if (errno != AHCI_SUCCESS)
         {
             kerror("FAT32 FS(read) error!");
@@ -616,7 +597,7 @@ long fat32_read(struct vfs_file_t *file_ptr, char *buf, int64_t count, long *pos
 
         *position += step_trans_len; // 更新文件指针
 
-        cluster = fat32_read_FAT_entry(fsbi, cluster);
+        cluster = fat32_read_FAT_entry(blk,fsbi, cluster);
     } while (bytes_remain && (cluster < 0x0ffffff8) && cluster != 0);
 
     kfree(tmp_buffer);
@@ -627,8 +608,6 @@ long fat32_read(struct vfs_file_t *file_ptr, char *buf, int64_t count, long *pos
     return retval;
 }
 
-
-
 /**
  * @brief 向fat32文件系统写入数据
  *
@@ -641,6 +620,7 @@ long fat32_write(struct vfs_file_t *file_ptr, char *buf, int64_t count, long *po
 {
     struct fat32_inode_info_t *finode = (struct fat32_inode_info_t *)file_ptr->dEntry->dir_inode->private_inode_info;
     fat32_sb_info_t *fsbi = (fat32_sb_info_t *)(file_ptr->dEntry->dir_inode->sb->private_sb_info);
+    struct block_device *blk = file_ptr->dEntry->dir_inode->sb->blk_device;
 
     // First cluster num of the file
     uint32_t cluster = finode->first_clus;
@@ -661,15 +641,13 @@ long fat32_write(struct vfs_file_t *file_ptr, char *buf, int64_t count, long *po
     {
         // 跳转到position所在的簇
         for (uint64_t i = 0; i < clus_offset_in_file; ++i)
-            cluster = fat32_read_FAT_entry(fsbi, cluster);
+            cluster = fat32_read_FAT_entry(blk,fsbi, cluster);
     }
     // kdebug("cluster(start)=%d", cluster);
     //  没有可用的磁盘空间
     if (!cluster)
         return -ENOSPC;
 
-   
-
     int64_t bytes_remain = count;
 
     if (count < 0) // 要写入的字节数小于0
@@ -687,7 +665,7 @@ long fat32_write(struct vfs_file_t *file_ptr, char *buf, int64_t count, long *po
         {
             // kdebug("read existed sec=%ld", sector);
             //  读取一个簇的数据
-            int errno = ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)tmp_buffer, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
+            int errno = blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_READ_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)tmp_buffer);
             if (errno != AHCI_SUCCESS)
             {
                 // kerror("FAT32 FS(write)  read disk error!");
@@ -709,7 +687,7 @@ long fat32_write(struct vfs_file_t *file_ptr, char *buf, int64_t count, long *po
             memcpy(tmp_buffer + bytes_offset, buf, step_trans_len);
 
         // 写入数据到对应的簇
-        int errno = ahci_operation.transfer(AHCI_CMD_WRITE_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)tmp_buffer, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
+        int errno = blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_WRITE_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)tmp_buffer);
         if (errno != AHCI_SUCCESS)
         {
             kerror("FAT32 FS(write)  write disk error!");
@@ -726,7 +704,7 @@ long fat32_write(struct vfs_file_t *file_ptr, char *buf, int64_t count, long *po
 
         int next_clus = 0;
         if (bytes_remain)
-            next_clus = fat32_read_FAT_entry(fsbi, cluster);
+            next_clus = fat32_read_FAT_entry(blk,fsbi, cluster);
         else
             break;
         if (next_clus >= 0x0ffffff8) // 已经到达了最后一个簇，需要分配新簇
@@ -855,6 +833,8 @@ long fat32_create(struct vfs_index_node_t *parent_inode, struct vfs_dir_entry_t
     inode->private_inode_info = (void *)finode;
     inode->blocks = fsbi->sec_per_clus;
 
+    struct block_device *blk = inode->sb->blk_device;
+
     // 计算总共需要多少个目录项
     uint32_t cnt_longname = (dest_dEntry->name_length + 25) / 26;
     // 默认都是创建长目录项来存储
@@ -897,7 +877,7 @@ long fat32_create(struct vfs_index_node_t *parent_inode, struct vfs_dir_entry_t
 
     // ====== 将目录项写回磁盘
     // kdebug("tmp_dentry_sector=%ld", tmp_dentry_sector);
-    ahci_operation.transfer(AHCI_CMD_WRITE_DMA_EXT, tmp_dentry_sector, fsbi->sec_per_clus, tmp_dentry_clus_buf_addr, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
+    blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_WRITE_DMA_EXT, tmp_dentry_sector, fsbi->sec_per_clus, tmp_dentry_clus_buf_addr);
 
     // 注意：parent字段需要在调用函数的地方进行设置
 
@@ -948,7 +928,6 @@ int64_t fat32_mkdir(struct vfs_index_node_t *parent_inode, struct vfs_dir_entry_
     // 寻找空闲目录项
     struct fat32_Directory_t *empty_fat32_dentry = fat32_find_empty_dentry(parent_inode, cnt_longname + 1, 0, &tmp_dentry_sector, &tmp_parent_dentry_clus, &tmp_dentry_clus_buf_addr);
 
-
     // ====== 初始化inode =======
     struct vfs_index_node_t *inode = (struct vfs_index_node_t *)kmalloc(sizeof(struct vfs_index_node_t), 0);
     memset(inode, 0, sizeof(struct vfs_index_node_t));
@@ -959,6 +938,8 @@ int64_t fat32_mkdir(struct vfs_index_node_t *parent_inode, struct vfs_dir_entry_
     inode->inode_ops = &fat32_inode_ops;
     inode->sb = parent_inode->sb;
 
+    struct block_device *blk = inode->sb->blk_device;
+
     // ===== 初始化inode的文件系统私有信息 ====
 
     inode->private_inode_info = (fat32_inode_info_t *)kmalloc(sizeof(fat32_inode_info_t), 0);
@@ -997,7 +978,7 @@ int64_t fat32_mkdir(struct vfs_index_node_t *parent_inode, struct vfs_dir_entry_
 
     // ====== 将目录项写回磁盘
     // kdebug("tmp_dentry_sector=%ld", tmp_dentry_sector);
-    ahci_operation.transfer(AHCI_CMD_WRITE_DMA_EXT, tmp_dentry_sector, fsbi->sec_per_clus, tmp_dentry_clus_buf_addr, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
+    blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_WRITE_DMA_EXT, tmp_dentry_sector, fsbi->sec_per_clus, tmp_dentry_clus_buf_addr);
     // ====== 初始化新的文件夹的目录项 =====
     {
         // kdebug("to create dot and dot dot.");
@@ -1030,7 +1011,7 @@ int64_t fat32_mkdir(struct vfs_index_node_t *parent_inode, struct vfs_dir_entry_
 
         uint64_t sector = fsbi->first_data_sector + (new_dir_clus - 2) * fsbi->sec_per_clus;
         // kdebug("add dot and dot dot: sector=%ld", sector);
-        ahci_operation.transfer(AHCI_CMD_WRITE_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)buf, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
+        blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_WRITE_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)buf);
     }
 
     // 注意：parent字段需要在调用函数的地方进行设置
@@ -1077,8 +1058,9 @@ int64_t fat32_readdir(struct vfs_file_t *file_ptr, void *dirent, vfs_filldir_t f
 {
     struct fat32_inode_info_t *finode = (struct fat32_inode_info_t *)file_ptr->dEntry->dir_inode->private_inode_info;
     fat32_sb_info_t *fsbi = (fat32_sb_info_t *)file_ptr->dEntry->dir_inode->sb->private_sb_info;
+    struct block_device *blk = file_ptr->dEntry->dir_inode->sb->blk_device;
 
-    unsigned char *buf = (unsigned char *)kmalloc(fsbi->bytes_per_clus, 0);
+    unsigned char *buf = (unsigned char *)kzalloc(fsbi->bytes_per_clus, 0);
     uint32_t cluster = finode->first_clus;
 
     // 当前文件指针所在位置的簇号（文件内偏移量）
@@ -1087,7 +1069,7 @@ int64_t fat32_readdir(struct vfs_file_t *file_ptr, void *dirent, vfs_filldir_t f
     // 循环读取fat entry，直到读取到文件当前位置的所在簇号
     for (int i = 0; i < clus_num; ++i)
     {
-        cluster = fat32_read_FAT_entry(fsbi, cluster);
+        cluster = fat32_read_FAT_entry(blk,fsbi, cluster);
         if (cluster > 0x0ffffff7) // 文件结尾
         {
             kerror("file position out of range! (cluster not exists)");
@@ -1105,7 +1087,8 @@ int64_t fat32_readdir(struct vfs_file_t *file_ptr, void *dirent, vfs_filldir_t f
         // 计算文件夹当前位置所在簇的起始扇区号
         uint64_t sector = fsbi->first_data_sector + (cluster - 2) * fsbi->sec_per_clus;
         // 读取文件夹目录项当前位置起始扇区的数据
-        if (AHCI_SUCCESS != ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)buf, fsbi->ahci_ctrl_num, fsbi->ahci_port_num))
+
+        if (AHCI_SUCCESS != blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_READ_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)buf))
         {
             // 读取失败
             kerror("Failed to read the file's first sector.");
@@ -1233,7 +1216,7 @@ int64_t fat32_readdir(struct vfs_file_t *file_ptr, void *dirent, vfs_filldir_t f
         }
 
         // 当前簇不存在目录项
-        cluster = fat32_read_FAT_entry(fsbi, cluster);
+        cluster = fat32_read_FAT_entry(blk, fsbi, cluster);
     }
 
     kfree(buf);

kernel/filesystem/fat32/fat32.h

@@ -128,9 +128,6 @@ struct fat32_LongDirectory_t
 struct fat32_partition_info_t
 {
     uint16_t partition_id; // 全局fat32分区id
-    uint8_t ahci_ctrl_num;
-    uint8_t ahci_port_num;
-    uint8_t part_num; // 硬盘中的分区号
 
     struct fat32_BootSector_t bootsector;
     struct fat32_FSInfo_t fsinfo;
@@ -179,12 +176,10 @@ struct vfs_superblock_t *fat32_register_partition(uint8_t ahci_ctrl_num, uint8_t
 /**
  * @brief 创建fat32文件系统的超级块
  *
- * @param DPTE 磁盘分区表entry
- * @param DPT_type 磁盘分区表类型
- * @param buf fat32文件系统的引导扇区
+ * @param blk 块设备结构体
  * @return struct vfs_superblock_t* 创建好的超级块
  */
-struct vfs_superblock_t *fat32_read_superblock(void *DPTE, uint8_t DPT_type, void *buf, int8_t ahci_ctrl_num, int8_t ahci_port_num, int8_t part_num);
+struct vfs_superblock_t *fat32_read_superblock(struct block_device* blk);
 
 /**
  * @brief 创建新的文件

kernel/filesystem/fat32/fat_ent.c

@@ -18,7 +18,7 @@ int fat32_alloc_clusters(struct vfs_index_node_t *inode, uint32_t *clusters, int
 
     fat32_sb_info_t *fsbi = (fat32_sb_info_t *)inode->sb->private_sb_info;
     struct fat32_inode_info_t *finode = (struct fat32_inode_info_t *)inode->private_inode_info;
-
+    struct block_device *blk = inode->sb->blk_device;
     uint64_t sec_per_fat = fsbi->sec_per_FAT;
 
     // todo: 对alloc的过程加锁
@@ -32,8 +32,7 @@ int fat32_alloc_clusters(struct vfs_index_node_t *inode, uint32_t *clusters, int
         if (clus_idx >= num_clusters)
             goto done;
         memset(buf, 0, fsbi->bytes_per_sec);
-
-        ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, fsbi->FAT1_base_sector + i, 1, (uint64_t)buf, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
+        blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_READ_DMA_EXT, fsbi->FAT1_base_sector + i, 1, (uint64_t)buf);
         // 依次检查簇是否空闲
         for (int j = 0; j < ent_per_sec; ++j)
         {
@@ -73,7 +72,7 @@ done:;
             cluster = tmp_clus;
             while (true)
             {
-                tmp_clus = fat32_read_FAT_entry(fsbi, cluster);
+                tmp_clus = fat32_read_FAT_entry(blk, fsbi, cluster);
                 if (tmp_clus <= 0x0ffffff7)
                     cluster = tmp_clus;
                 else
@@ -85,10 +84,10 @@ done:;
         for (int i = idx; i < num_clusters; ++i)
         {
             // kdebug("write cluster i=%d : cluster=%d, value= %d", i, cluster, clusters[i]);
-            fat32_write_FAT_entry(fsbi, cluster, clusters[i]);
+            fat32_write_FAT_entry(blk, fsbi, cluster, clusters[i]);
             cluster = clusters[i];
         }
-        fat32_write_FAT_entry(fsbi, cluster, 0x0ffffff8);
+        fat32_write_FAT_entry(blk, fsbi, cluster, 0x0ffffff8);
 
         return 0;
     }
@@ -119,11 +118,12 @@ int fat32_free_clusters(struct vfs_index_node_t *inode, int32_t cluster)
 /**
  * @brief 读取指定簇的FAT表项
  *
+ * @param blk 块设备结构体
  * @param fsbi fat32超级块私有信息结构体
  * @param cluster 指定簇
  * @return uint32_t 下一个簇的簇号
  */
-uint32_t fat32_read_FAT_entry(fat32_sb_info_t *fsbi, uint32_t cluster)
+uint32_t fat32_read_FAT_entry(struct block_device *blk, fat32_sb_info_t *fsbi, uint32_t cluster)
 {
     // 计算每个扇区内含有的FAT表项数
     // FAT每项4bytes
@@ -133,8 +133,8 @@ uint32_t fat32_read_FAT_entry(fat32_sb_info_t *fsbi, uint32_t cluster)
     memset(buf, 0, fsbi->bytes_per_sec);
 
     // 读取一个sector的数据，
-    ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, fsbi->FAT1_base_sector + (cluster / fat_ent_per_sec), 1,
-                            (uint64_t)&buf, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
+    blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_READ_DMA_EXT, fsbi->FAT1_base_sector + (cluster / fat_ent_per_sec), 1,
+                                 (uint64_t)&buf);
 
     // 返回下一个fat表项的值（也就是下一个cluster）
     return buf[cluster & (fat_ent_per_sec - 1)] & 0x0fffffff;
@@ -143,28 +143,29 @@ uint32_t fat32_read_FAT_entry(fat32_sb_info_t *fsbi, uint32_t cluster)
 /**
  * @brief 写入指定簇的FAT表项
  *
+ * @param blk 块设备结构体
  * @param fsbi fat32超级块私有信息结构体
  * @param cluster 指定簇
  * @param value 要写入该fat表项的值
  * @return uint32_t errcode
  */
-uint32_t fat32_write_FAT_entry(fat32_sb_info_t *fsbi, uint32_t cluster, uint32_t value)
+uint32_t fat32_write_FAT_entry(struct block_device *blk, fat32_sb_info_t *fsbi, uint32_t cluster, uint32_t value)
 {
     // 计算每个扇区内含有的FAT表项数
     // FAT每项4bytes
     uint32_t fat_ent_per_sec = (fsbi->bytes_per_sec >> 2); // 该值应为2的n次幂
-    uint32_t *buf = kmalloc(fsbi->bytes_per_sec, 0);
-    memset(buf, 0, fsbi->bytes_per_sec);
+    uint32_t *buf = kzalloc(fsbi->bytes_per_sec, 0);
 
-    ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, fsbi->FAT1_base_sector + (cluster / fat_ent_per_sec), 1,
-                            (uint64_t)buf, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
+    blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_READ_DMA_EXT, fsbi->FAT1_base_sector + (cluster / fat_ent_per_sec), 1,
+                                 (uint64_t)buf);
 
     buf[cluster & (fat_ent_per_sec - 1)] = (buf[cluster & (fat_ent_per_sec - 1)] & 0xf0000000) | (value & 0x0fffffff);
     // 向FAT1和FAT2写入数据
-    ahci_operation.transfer(AHCI_CMD_WRITE_DMA_EXT, fsbi->FAT1_base_sector + (cluster / fat_ent_per_sec), 1,
-                            (uint64_t)buf, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
-    ahci_operation.transfer(AHCI_CMD_WRITE_DMA_EXT, fsbi->FAT2_base_sector + (cluster / fat_ent_per_sec), 1,
-                            (uint64_t)buf, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
+    blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_WRITE_DMA_EXT, fsbi->FAT1_base_sector + (cluster / fat_ent_per_sec), 1,
+                                 (uint64_t)buf);
+    blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_WRITE_DMA_EXT, fsbi->FAT2_base_sector + (cluster / fat_ent_per_sec), 1,
+                                 (uint64_t)buf);
+
     kfree(buf);
     return 0;
 }
@@ -186,8 +187,9 @@ struct fat32_Directory_t *fat32_find_empty_dentry(struct vfs_index_node_t *paren
     struct fat32_inode_info_t *finode = (struct fat32_inode_info_t *)parent_inode->private_inode_info;
     fat32_sb_info_t *fsbi = (fat32_sb_info_t *)parent_inode->sb->private_sb_info;
 
-    uint8_t *buf = kmalloc(fsbi->bytes_per_clus, 0);
-    memset(buf, 0, fsbi->bytes_per_clus);
+    uint8_t *buf = kzalloc(fsbi->bytes_per_clus, 0);
+
+    struct block_device *blk = parent_inode->sb->blk_device;
 
     // 计算父目录项的起始簇号
     uint32_t cluster = finode->first_clus;
@@ -202,7 +204,7 @@ struct fat32_Directory_t *fat32_find_empty_dentry(struct vfs_index_node_t *paren
         uint64_t sector = fsbi->first_data_sector + (cluster - 2) * fsbi->sec_per_clus;
 
         // 读取父目录项的起始簇数据
-        ahci_operation.transfer(AHCI_CMD_READ_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)buf, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
+        blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_READ_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)buf);
         tmp_dEntry = (struct fat32_Directory_t *)buf;
         // 计数连续的空目录项
         uint32_t count_continuity = 0;
@@ -233,7 +235,7 @@ struct fat32_Directory_t *fat32_find_empty_dentry(struct vfs_index_node_t *paren
 
         // 当前簇没有发现符合条件的空闲目录项，寻找下一个簇
         uint64_t old_cluster = cluster;
-        cluster = fat32_read_FAT_entry(fsbi, cluster);
+        cluster = fat32_read_FAT_entry(blk, fsbi, cluster);
         if (cluster >= 0x0ffffff7) // 寻找完父目录的所有簇，都没有找到符合要求的空目录项
         {
 
@@ -248,9 +250,8 @@ struct fat32_Directory_t *fat32_find_empty_dentry(struct vfs_index_node_t *paren
 
             // 将这个新的簇清空
             sector = fsbi->first_data_sector + (cluster - 2) * fsbi->sec_per_clus;
-            void *tmp_buf = kmalloc(fsbi->bytes_per_clus, 0);
-            memset(tmp_buf, 0, fsbi->bytes_per_clus);
-            ahci_operation.transfer(AHCI_CMD_WRITE_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)tmp_buf, fsbi->ahci_ctrl_num, fsbi->ahci_port_num);
+            void *tmp_buf = kzalloc(fsbi->bytes_per_clus, 0);
+            blk->bd_disk->fops->transfer(blk->bd_disk, AHCI_CMD_WRITE_DMA_EXT, sector, fsbi->sec_per_clus, (uint64_t)tmp_buf);
             kfree(tmp_buf);
         }
     }

kernel/filesystem/fat32/fat_ent.h

@@ -26,21 +26,23 @@ int fat32_free_clusters(struct vfs_index_node_t *inode, int32_t cluster);
 /**
  * @brief 读取指定簇的FAT表项
  *
+ * @param blk 块设备结构体
  * @param fsbi fat32超级块私有信息结构体
  * @param cluster 指定簇
  * @return uint32_t 下一个簇的簇号
  */
-uint32_t fat32_read_FAT_entry(fat32_sb_info_t *fsbi, uint32_t cluster);
+uint32_t fat32_read_FAT_entry(struct block_device * blk, fat32_sb_info_t *fsbi, uint32_t cluster);
 
 /**
  * @brief 写入指定簇的FAT表项
  *
+ * @param blk 块设备结构体
  * @param fsbi fat32超级块私有信息结构体
  * @param cluster 指定簇
  * @param value 要写入该fat表项的值
  * @return uint32_t errcode
  */
-uint32_t fat32_write_FAT_entry(fat32_sb_info_t *fsbi, uint32_t cluster, uint32_t value);
+uint32_t fat32_write_FAT_entry(struct block_device * blk, fat32_sb_info_t *fsbi, uint32_t cluster, uint32_t value);
 
 /**
  * @brief 在父亲inode的目录项簇中，寻找连续num个空的目录项

kernel/filesystem/rootfs/Makefile

@@ -0,0 +1,17 @@
+
+CFLAGS += -I .
+
+
+kernel_fs_rootfs_objs:= $(shell find ./*.c)
+
+
+ECHO:
+	@echo "$@"
+
+
+$(kernel_fs_rootfs_objs): ECHO
+	gcc $(CFLAGS) -c $@ -o [email protected]
+
+
+all: $(kernel_fs_rootfs_objs)
+

kernel/filesystem/rootfs/rootfs.c

@@ -0,0 +1,6 @@
+#include "rootfs.h"
+#include <filesystem/VFS/VFS.h>
+
+void rootfs_init()
+{
+}

kernel/filesystem/rootfs/rootfs.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void rootfs_init();

kernel/main.c

@@ -145,7 +145,6 @@ void system_initialize()
     // ata_init();
     pci_init();
     io_mfence();
-    ahci_init();
 
     // test_slab();
     // test_mm();

kernel/process/process.c

@@ -19,6 +19,7 @@
 #include <sched/sched.h>
 #include <common/unistd.h>
 #include <debug/traceback/traceback.h>
+#include <driver/disk/ahci/ahci.h>
 
 #include <ktest/ktest.h>
 
@@ -462,6 +463,7 @@ exec_failed:;
 ul initial_kernel_thread(ul arg)
 {
     // kinfo("initial proc running...\targ:%#018lx", arg);
+    ahci_init();
     fat32_init();
     // 使用单独的内核线程来初始化usb驱动程序
     int usb_pid = kernel_thread(usb_init, 0, 0);
@@ -481,7 +483,6 @@ ul initial_kernel_thread(ul arg)
         waitpid(tpid[i], NULL, NULL);
     kinfo("All test done.");
 
-
     // 准备切换到用户态
     struct pt_regs *regs;