ahci: refactor duplicated ATA command code into a method

ahcid/src/ahci/disk_ata.rs

@@ -62,14 +62,14 @@ impl Disk for DiskATA {
 
         let mut sector: usize = 0;
         while sectors - sector >= 255 {
-            self.port.ata_dma(block + sector as u64, 255, false, &mut self.clb, &mut self.ctbas, &mut self.buf)?;
+            self.port.dma_read_write(block + sector as u64, 255, false, &mut self.clb, &mut self.ctbas, &mut self.buf)?;
 
             unsafe { ptr::copy(self.buf.as_ptr(), buffer.as_mut_ptr().offset(sector as isize * 512), 255 * 512); }
 
             sector += 255;
         }
         if sector < sectors {
-            self.port.ata_dma(block + sector as u64, sectors - sector, false, &mut self.clb, &mut self.ctbas, &mut self.buf)?;
+            self.port.dma_read_write(block + sector as u64, sectors - sector, false, &mut self.clb, &mut self.ctbas, &mut self.buf)?;
 
             unsafe { ptr::copy(self.buf.as_ptr(), buffer.as_mut_ptr().offset(sector as isize * 512), (sectors - sector) * 512); }
 
@@ -86,7 +86,7 @@ impl Disk for DiskATA {
         while sectors - sector >= 255 {
             unsafe { ptr::copy(buffer.as_ptr().offset(sector as isize * 512), self.buf.as_mut_ptr(), 255 * 512); }
 
-            if let Err(err) = self.port.ata_dma(block + sector as u64, 255, true, &mut self.clb, &mut self.ctbas, &mut self.buf) {
+            if let Err(err) = self.port.dma_read_write(block + sector as u64, 255, true, &mut self.clb, &mut self.ctbas, &mut self.buf) {
                 return Err(err);
             }
 
@@ -95,7 +95,7 @@ impl Disk for DiskATA {
         if sector < sectors {
             unsafe { ptr::copy(buffer.as_ptr().offset(sector as isize * 512), self.buf.as_mut_ptr(), (sectors - sector) * 512); }
 
-            if let Err(err) = self.port.ata_dma(block + sector as u64, sectors - sector, true, &mut self.clb, &mut self.ctbas, &mut self.buf) {
+            if let Err(err) = self.port.dma_read_write(block + sector as u64, sectors - sector, true, &mut self.clb, &mut self.ctbas, &mut self.buf) {
                 return Err(err);
             }