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Export the pribus, secbus and subbus as sysctls for information

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purposes only.  Additional information may be exported in the future.
This commit is contained in:
Warner Losh 2006-05-24 17:27:55 +00:00
parent 2f6303b0f6
commit fef035542a
2 changed files with 31 additions and 20 deletions
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46
sys/dev/pccbb/pccbb_pci.c
View File

@ -301,8 +301,10 @@ cbb_pci_attach(device_t brdev)
{
static int curr_bus_number = 2; /* XXX EVILE BAD (see below) */
struct cbb_softc *sc = (struct cbb_softc *)device_get_softc(brdev);
int rid, bus, pribus;
int rid;
device_t parent;
struct sysctl_ctx_list *sctx;
struct sysctl_oid *soid;
parent = device_get_parent(brdev);
mtx_init(&sc->mtx, device_get_nameunit(brdev), "cbb", MTX_DEF);
@ -314,6 +316,7 @@ cbb_pci_attach(device_t brdev)
sc->exca[0].pccarddev = NULL;
sc->secbus = pci_read_config(brdev, PCIR_SECBUS_2, 1);
sc->subbus = pci_read_config(brdev, PCIR_SUBBUS_2, 1);
sc->pribus = pci_read_config(brdev, PCIR_PRIBUS_2, 1);
SLIST_INIT(&sc->rl);
cbb_powerstate_d0(brdev);
@ -338,30 +341,37 @@ cbb_pci_attach(device_t brdev)
sc->chipinit = cbb_chipinit;
sc->chipinit(sc);
/*Sysctls*/
sctx = device_get_sysctl_ctx(brdev);
soid = device_get_sysctl_tree(brdev);
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "pribus",
CTLFLAG_RD, &sc->pribus, 0, "Primary bus number");
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "secbus",
CTLFLAG_RD, &sc->secbus, 0, "Secondary bus number");
SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "subbus",
CTLFLAG_RD, &sc->subbus, 0, "Subordinate bus number");
/*
* This is a gross hack. We should be scanning the entire pci
* tree, assigning bus numbers in a way such that we (1) can
* reserve 1 extra bus just in case and (2) all sub busses
* are in an appropriate range.
*/
bus = pci_read_config(brdev, PCIR_SECBUS_2, 1);
pribus = pcib_get_bus(parent);
DEVPRINTF((brdev, "Secondary bus is %d\n", bus));
if (bus == 0) {
if (curr_bus_number <= pribus)
curr_bus_number = pribus + 1;
if (pci_read_config(brdev, PCIR_PRIBUS_2, 1) != pribus) {
DEVPRINTF((brdev, "Setting primary bus to %d\n", pribus));
pci_write_config(brdev, PCIR_PRIBUS_2, pribus, 1);
DEVPRINTF((brdev, "Secondary bus is %d\n", sc->secbus));
if (sc->secbus == 0) {
if (curr_bus_number <= sc->pribus)
curr_bus_number = sc->pribus + 1;
if (pci_read_config(brdev, PCIR_PRIBUS_2, 1) != sc->pribus) {
DEVPRINTF((brdev, "Setting primary bus to %d\n",
sc->pribus));
pci_write_config(brdev, PCIR_PRIBUS_2, sc->pribus, 1);
}
bus = curr_bus_number;
DEVPRINTF((brdev, "Secondary bus set to %d subbus %d\n", bus,
bus + 1));
sc->secbus = bus;
sc->subbus = bus + 1;
pci_write_config(brdev, PCIR_SECBUS_2, bus, 1);
pci_write_config(brdev, PCIR_SUBBUS_2, bus + 1, 1);
curr_bus_number += 2;
sc->secbus = curr_bus_number++;
sc->subbus = curr_bus_number++;
DEVPRINTF((brdev, "Secondary bus set to %d subbus %d\n",
sc->secbus, sc->subbus));
pci_write_config(brdev, PCIR_SECBUS_2, sc->secbus, 1);
pci_write_config(brdev, PCIR_SUBBUS_2, sc->subbus, 1);
}
/* attach children */

5
sys/dev/pccbb/pccbbvar.h
View File

@ -61,8 +61,9 @@ struct cbb_softc {
void *intrhand;
bus_space_tag_t bst;
bus_space_handle_t bsh;
u_int8_t secbus;
u_int8_t subbus;
unsigned int pribus;
unsigned int secbus;
unsigned int subbus;
struct mtx mtx;
struct cv cv;
struct cv powercv;