Improve ATA IDENTIFY word 64 contents.

Fill in word 64 of IDENTIFY data to indicate support for PIO modes 3 and 4.
This allows NetBSD guests to use UltraDMA modes instead of just PIO mode 0.
Signed-off-by: NJonathan A. Kollasch <jakllsch@kollasch.net>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

hw/ide/core.c

@@ -139,6 +139,7 @@ static void ide_identify(IDEState *s)
     put_le16(p + 61, s->nb_sectors >> 16);
     put_le16(p + 62, 0x07); /* single word dma0-2 supported */
     put_le16(p + 63, 0x07); /* mdma0-2 supported */
+    put_le16(p + 64, 0x03); /* pio3-4 supported */
     put_le16(p + 65, 120);
     put_le16(p + 66, 120);
     put_le16(p + 67, 120);
@@ -199,13 +200,12 @@ static void ide_atapi_identify(IDEState *s)
     put_le16(p + 53, 7); /* words 64-70, 54-58, 88 valid */
     put_le16(p + 62, 7);  /* single word dma0-2 supported */
     put_le16(p + 63, 7);  /* mdma0-2 supported */
-    put_le16(p + 64, 0x3f); /* PIO modes supported */
 #else
     put_le16(p + 49, 1 << 9); /* LBA supported, no DMA */
     put_le16(p + 53, 3); /* words 64-70, 54-58 valid */
     put_le16(p + 63, 0x103); /* DMA modes XXX: may be incorrect */
-    put_le16(p + 64, 1); /* PIO modes */
 #endif
+    put_le16(p + 64, 3); /* pio3-4 supported */
     put_le16(p + 65, 0xb4); /* minimum DMA multiword tx cycle time */
     put_le16(p + 66, 0xb4); /* recommended DMA multiword tx cycle time */
     put_le16(p + 67, 0x12c); /* minimum PIO cycle time without flow control */