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powerpc/mpc85xx: Make Freescale PCI bridge driver a subclass of ofw_pcib_pci

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This driver was already 99% identical to the ofw_pcib_pci driver, except for
the attachment.  Since ofw_pcib_pci is already a subclass of pcib, this
creates a private declaration of that class, to use for the base class for
this driver.

At some point in the future, ofw_pcib_pci_driver should probably be exported
to a header, so we're not tracking the softc struct contents, but for now,
since there's only this one other driver, it's not a pressing issue.
This commit is contained in:
Justin Hibbits 2018-10-21 02:39:13 +00:00
parent 27ef2ca86b
commit c9bd5bee1a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=339522
1 changed files with 6 additions and 78 deletions
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84
sys/powerpc/mpc85xx/pci_mpc85xx_pcib.c
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@ -63,11 +63,16 @@ __FBSDID("$FreeBSD$");
#include "pcib_if.h"
DECLARE_CLASS(ofw_pcib_pci_driver);
struct fsl_pcib_softc {
/*
* This is here so that we can use pci bridge methods, too - the
* generic routines only need the dev, secbus and subbus members
* filled.
*
* XXX: This should be extracted from ofw_pcib_pci.c, and shared in a
* header.
*/
struct pcib_softc ops_pcib_sc;
phandle_t ops_node;
@ -90,89 +95,12 @@ fsl_pcib_rc_probe(device_t dev)
return (BUS_PROBE_DEFAULT);
}
static int
fsl_pcib_rc_attach(device_t dev)
{
struct fsl_pcib_softc *sc;
sc = device_get_softc(dev);
sc->ops_pcib_sc.dev = dev;
sc->ops_node = ofw_bus_get_node(dev);
ofw_bus_setup_iinfo(sc->ops_node, &sc->ops_iinfo,
sizeof(cell_t));
pcib_attach_common(dev);
return (pcib_attach_child(dev));
}
static phandle_t
fsl_pcib_rc_get_node(device_t bridge, device_t dev)
{
/* We have only one child, the PCI bus, so pass it our node */
return (ofw_bus_get_node(bridge));
}
static int
fsl_pcib_rc_route_interrupt(device_t bridge, device_t dev, int intpin)
{
struct fsl_pcib_softc *sc;
struct ofw_bus_iinfo *ii;
struct ofw_pci_register reg;
cell_t pintr, mintr[2];
int intrcells;
phandle_t iparent;
sc = device_get_softc(bridge);
ii = &sc->ops_iinfo;
if (ii->opi_imapsz > 0) {
pintr = intpin;
/* Fabricate imap information if this isn't an OFW device */
bzero(&reg, sizeof(reg));
reg.phys_hi = (pci_get_bus(dev) << OFW_PCI_PHYS_HI_BUSSHIFT) |
(pci_get_slot(dev) << OFW_PCI_PHYS_HI_DEVICESHIFT) |
(pci_get_function(dev) << OFW_PCI_PHYS_HI_FUNCTIONSHIFT);
intrcells = ofw_bus_lookup_imap(ofw_bus_get_node(dev), ii, &reg,
sizeof(reg), &pintr, sizeof(pintr), mintr, sizeof(mintr),
&iparent);
if (intrcells) {
/*
* If we've found a mapping, return it and don't map
* it again on higher levels - that causes problems
* in some cases, and never seems to be required.
*/
mintr[0] = ofw_bus_map_intr(dev, iparent, intrcells,
mintr);
return (mintr[0]);
}
} else if (intpin >= 1 && intpin <= 4) {
/*
* When an interrupt map is missing, we need to do the
* standard PCI swizzle and continue mapping at the parent.
*/
return (pcib_route_interrupt(bridge, dev, intpin));
}
return (PCIB_ROUTE_INTERRUPT(device_get_parent(device_get_parent(
bridge)), bridge, intpin));
}
static device_method_t fsl_pcib_rc_methods[] = {
DEVMETHOD(device_probe, fsl_pcib_rc_probe),
DEVMETHOD(device_attach, fsl_pcib_rc_attach),
/* pcib interface */
DEVMETHOD(pcib_route_interrupt, fsl_pcib_rc_route_interrupt),
DEVMETHOD(pcib_request_feature, pcib_request_feature_allow),
/* ofw_bus interface */
DEVMETHOD(ofw_bus_get_node, fsl_pcib_rc_get_node),
DEVMETHOD_END
};
static devclass_t fsl_pcib_rc_devclass;
DEFINE_CLASS_1(pcib, fsl_pcib_rc_driver, fsl_pcib_rc_methods,
sizeof(struct fsl_pcib_softc), pcib_driver);
sizeof(struct fsl_pcib_softc), ofw_pcib_pci_driver);
DRIVER_MODULE(rcpcib, pci, fsl_pcib_rc_driver, fsl_pcib_rc_devclass, 0, 0);