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ide: Update ide_drive_get to be HBA agnostic

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Instead of duplicating the logic for the if_ide
(bus,unit) mappings, rely on the blockdev layer
for managing those mappings for us, and use the
drive_get_by_index call instead.

This allows ide_drive_get to work for AHCI HBAs
as well, and can be used in the Q35 initialization.

Lastly, change the nature of the argument to
ide_drive_get so that represents the number of
total drives we can support, and not the total
number of buses. This will prevent array overflows
if the units-per-default-bus property ever needs
to be adjusted for compatibility reasons.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 1412187569-23452-5-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
John Snow 2014-10-01 14:19:27 -04:00 • committed by Stefan Hajnoczi
parent 1602651833
commit d8f94e1bb2
12 changed files with 44 additions and 14 deletions
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2
hw/i386/pc_piix.c
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@ -239,7 +239,7 @@ static void pc_init1(MachineState *machine,
pc_nic_init(isa_bus, pci_bus);
ide_drive_get(hd, MAX_IDE_BUS);
ide_drive_get(hd, ARRAY_SIZE(hd));
if (pci_enabled) {
PCIDevice *dev;
if (xen_enabled()) {