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libqos: allow qpci_iomap to return BAR mapping size

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This patch allows qpci_iomap to return the size of the
BAR mapping that it created, to allow driver applications
(e.g, ahci-test) to make determinations about the suitability
or the mapping size, or in the specific case of AHCI, how
many ports are supported by the HBA.

Signed-off-by: John Snow <jsnow@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
John Snow 2014-08-04 17:11:24 -04:00 • committed by Stefan Hajnoczi
parent 7f2a5ae6c1
commit 6ce7100e7f
5 changed files with 10 additions and 7 deletions
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5
tests/libqos/pci-pc.c
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@ -144,7 +144,7 @@ static void qpci_pc_config_writel(QPCIBus *bus, int devfn, uint8_t offset, uint3
outl(0xcfc, value);
}
static void *qpci_pc_iomap(QPCIBus *bus, QPCIDevice *dev, int barno)
static void *qpci_pc_iomap(QPCIBus *bus, QPCIDevice *dev, int barno, uint64_t *sizeptr)
{
QPCIBusPC *s = container_of(bus, QPCIBusPC, bus);
static const int bar_reg_map[] = {
@ -173,6 +173,9 @@ static void *qpci_pc_iomap(QPCIBus *bus, QPCIDevice *dev, int barno)
if (size == 0) {
return NULL;
}
if (sizeptr) {
*sizeptr = size;
}
if (io_type == PCI_BASE_ADDRESS_SPACE_IO) {
uint16_t loc;