Changeset 26104 in vbox for trunk/src/VBox/Devices

Timestamp:

Jan 29, 2010 4:46:11 PM (15 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

57090

Message:

SATA: integrity word

File:

• trunk/src/VBox/Devices/Storage/ATAController.cpp (modified) (4 diffs)

trunk/src/VBox/Devices/Storage/ATAController.cpp

@@ -647 +647 @@
 }
 
+static uint32_t ataChecksum(void* ptr, size_t count)
+{
+    uint8_t u8Sum = 0xa5, *p = (uint8_t*)ptr;
+    size_t i;
+
+    for (i = 0; i < count; i++)
+    {
+      u8Sum += *p++;
+    }
+
+    return (uint8_t)-(int32_t)u8Sum;
+}
 
 static void ataCmdOK(AHCIATADevState *s, uint8_t status)
@@ -765 +777 @@
         p[103] = RT_H2LE_U16(s->cTotalSectors >> 48);
     }
+    uint32_t uCsum = ataChecksum(p, 510);
+    p[255] = RT_H2LE_U16(0xa5 | (uCsum << 8)); /* Integrity word */
+
     s->iSourceSink = ATAFN_SS_NULL;
     ataCmdOK(s, ATA_STAT_SEEK);
@@ -848 +863 @@
     p[88] = RT_H2LE_U16(ATA_TRANSFER_ID(ATA_MODE_UDMA, ATA_UDMA_MODE_MAX, s->uATATransferMode)); /* UDMA modes supported / mode enabled */
     p[93] = RT_H2LE_U16((1 | 1 << 1) << ((s->iLUN & 1) == 0 ? 0 : 8) | 1 << 13 | 1 << 14);
+    uint32_t uCsum = ataChecksum(p, 510);
+    p[255] = RT_H2LE_U16(0xa5 | (uCsum << 8)); /* Integrity word */
     s->iSourceSink = ATAFN_SS_NULL;
     ataCmdOK(s, ATA_STAT_SEEK);
@@ -5539 +5556 @@
 #endif /* IN_RING3 */
 #endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
-