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Usnure that PCI bus BIS_GET_DMA_TAG() method sees the actual PCI

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device which makes the request for dma tag, instead of some descendant
of the PCI device, by creating a pass-through trampoline for vga_pci
and ata_pci buses.

Sponsored by:	The FreeBSD Foundation
Suggested by:	jhb
Discussed with:	jhb, mav
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2013-04-14 14:02:34 +00:00
parent f29b8a64d0
commit 5c818b67a4
2 changed files with 16 additions and 0 deletions
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8
sys/dev/ata/ata-pci.c
View File

@ -571,6 +571,13 @@ ata_pci_child_location_str(device_t dev, device_t child, char *buf,
return (0);
}
static bus_dma_tag_t
ata_pci_get_dma_tag(device_t bus, device_t child)
{
return (bus_get_dma_tag(bus));
}
static device_method_t ata_pci_methods[] = {
/* device interface */
DEVMETHOD(device_probe, ata_pci_probe),
@ -593,6 +600,7 @@ static device_method_t ata_pci_methods[] = {
DEVMETHOD(pci_write_config, ata_pci_write_config),
DEVMETHOD(bus_print_child, ata_pci_print_child),
DEVMETHOD(bus_child_location_str, ata_pci_child_location_str),
DEVMETHOD(bus_get_dma_tag, ata_pci_get_dma_tag),
DEVMETHOD_END
};

8
sys/dev/pci/vga_pci.c
View File

@ -419,6 +419,13 @@ vga_pci_msix_count(device_t dev, device_t child)
return (pci_msix_count(dev));
}
static bus_dma_tag_t
vga_pci_get_dma_tag(device_t bus, device_t child)
{
return (bus_get_dma_tag(bus));
}
static device_method_t vga_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, vga_pci_probe),
@ -436,6 +443,7 @@ static device_method_t vga_pci_methods[] = {
DEVMETHOD(bus_release_resource, vga_pci_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_get_dma_tag, vga_pci_get_dma_tag),
/* PCI interface */
DEVMETHOD(pci_read_config, vga_pci_read_config),