Changeset 39573 in vbox for trunk/src/VBox/Devices/PC/BIOS-new

Timestamp:

Dec 9, 2011 2:56:37 PM (13 years ago)

Author:

vboxsync

Message:

Fixed DMA workaround for AHCI/ATAPI.

File:

• trunk/src/VBox/Devices/PC/BIOS-new/ahci.c (modified) (1 diff)

trunk/src/VBox/Devices/PC/BIOS-new/ahci.c

@@ -520 +520 @@
     ahci_cmd_data(bios_dsk, ATA_CMD_PACKET);
     VBOXAHCI_DEBUG("%s: transferred %lu bytes\n", __func__, ahci->aCmdHdr[1]);
+    bios_dsk->drqp.trsfbytes = ahci->aCmdHdr[1];
 #ifdef DMA_WORKAROUND
-    rep_movsw(bios_dsk->drqp.buffer, bios_dsk->drqp.buffer, bios_dsk->drqp.nsect * 2048 / 2);
+    rep_movsw(bios_dsk->drqp.buffer, bios_dsk->drqp.buffer, bios_dsk->drqp.trsfbytes / 2);
 #endif
-    bios_dsk->drqp.trsfbytes = ahci->aCmdHdr[1];
     return ahci->aCmdHdr[1] == 0 ? 4 : 0;
 //    return 0;   //@todo!!