[PR] Add DMA Alignment Component and Integrate It into the MMC Driver [nuttx]

[via GitHub]

snikeguo opened a new pull request, #16464:
URL: https://github.com/apache/nuttx/pull/16464

   *Note: Please adhere to [Contributing 
Guidelines](https://github.com/apache/nuttx/blob/master/CONTRIBUTING.md).*
   
   ## Summary
   
   Add DMA Alignment Component and Integrate It into the MMC Driver
   
   ## Impact
   
   I believe DMA management should be handled by device drivers, not by the FAT 
layer. For more details, see: 
@apache/nuttxhttps://github.com/apache/nuttx/issues/16415
   during MMC/TF card enumeration, DMA should not be used because the data 
volume is only a few bytes. Linux is also designed this way.
   
   ## Testing
   MMC Write Logic:
   
   mmcsd_writemultiple() { .... mmcsd_transferready(); ... SDIO_DMASENDSETUP(); 
}
   
   In the current code 
(https://github.com/apache/nuttx/commit/b05ec7729d9b7fe85a6f11bfbb2da979255f44b7),
 I found that after writing multiple sectors, when sending ACMD51 and then 
querying R1, the error rate is very high.
   test code:
   
    int r1_error_cnt=0;
   mmcsd_transferready()
   {
     ...
      ret = mmcsd_get_r1(priv, &r1);
          if (ret != OK)
            {
              ferr("ERROR: mmcsd_get_r1 failed: %d\n", ret);
              return ret;
            }
          /* Now check if the card is in the expected transfer state. */
    
          if (IS_STATE(r1, MMCSD_R1_STATE_TRAN))
            {
              /* Yes.. return Success */
    
              priv->wrbusy = false;
              return OK;
            }
            extern int wm_called;
            if(wm_called)
            {
              r1_error_cnt++;
            }
   }
   
   
   
![image](https://github.com/user-attachments/assets/18a11527-7c68-4645-aec8-ef289657ba8e)
   With my code, the test results show no errors.
   
![image](https://github.com/user-attachments/assets/9732333a-5e22-463d-b8b8-a6672e155ed9)
   


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