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-rw-r--r--sys/amd64/pci/pci_bus.c108
-rw-r--r--sys/amd64/pci/pci_cfgreg.c108
-rw-r--r--sys/i386/isa/pcibus.c108
-rw-r--r--sys/i386/pci/pci_bus.c108
-rw-r--r--sys/i386/pci/pci_cfgreg.c108
-rw-r--r--sys/i386/pci/pci_pir.c108
6 files changed, 534 insertions, 114 deletions
diff --git a/sys/amd64/pci/pci_bus.c b/sys/amd64/pci/pci_bus.c
index 41e2226..2dd6694 100644
--- a/sys/amd64/pci/pci_bus.c
+++ b/sys/amd64/pci/pci_bus.c
@@ -595,6 +595,8 @@ nexus_pcib_identify(driver_t *driver, device_t parent)
u_int32_t id;
u_int8_t class, subclass, busnum;
const char *s;
+ device_t *devs;
+ int ndevs, i;
id = nexus_pcib_read_config(0, bus, slot, func,
PCIR_DEVVENDOR, 4);
@@ -608,26 +610,48 @@ nexus_pcib_identify(driver_t *driver, device_t parent)
s = nexus_pcib_is_host_bridge(bus, slot, func,
id, class, subclass,
&busnum);
- if (s) {
- /*
- * Add at priority 100 to make sure we
- * go after any motherboard resources
- */
- child = BUS_ADD_CHILD(parent, 100,
- "pcib", busnum);
- device_set_desc(child, s);
-
- ivar = malloc(sizeof ivar[0], M_DEVBUF,
- M_NOWAIT);
- if (ivar == NULL)
- panic("out of memory");
- device_set_ivars(child, ivar);
- ivar[0] = busnum;
-
- found = 1;
- if (id == 0x12258086)
- found824xx = 1;
+ if (s == NULL)
+ continue;
+
+ /*
+ * Check to see if the physical bus has already
+ * been seen. Eg: hybrid 32 and 64 bit host
+ * bridges to the same logical bus.
+ */
+ if (device_get_children(parent, &devs, &ndevs) == 0) {
+ for (i = 0; s != NULL && i < ndevs; i++) {
+ if (strcmp(device_get_name(devs[i]),
+ "pcib") != 0)
+ continue;
+ ivar = device_get_ivars(devs[i]);
+ if (ivar == NULL)
+ continue;
+ if (busnum == *ivar)
+ s = NULL;
+ }
+ free(devs, M_TEMP);
}
+
+ if (s == NULL)
+ continue;
+ /*
+ * Add at priority 100 to make sure we
+ * go after any motherboard resources
+ */
+ child = BUS_ADD_CHILD(parent, 100,
+ "pcib", busnum);
+ device_set_desc(child, s);
+
+ ivar = malloc(sizeof ivar[0], M_DEVBUF,
+ M_NOWAIT);
+ if (ivar == NULL)
+ panic("out of memory");
+ device_set_ivars(child, ivar);
+ ivar[0] = busnum;
+
+ found = 1;
+ if (id == 0x12258086)
+ found824xx = 1;
}
}
if (found824xx && bus == 0) {
@@ -734,6 +758,52 @@ static driver_t nexus_pcib_driver = {
DRIVER_MODULE(pcib, nexus, nexus_pcib_driver, pcib_devclass, 0, 0);
+
+/*
+ * Provide a device to "eat" the host->pci bridges that we dug up above
+ * and stop them showing up twice on the probes. This also stops them
+ * showing up as 'none' in pciconf -l.
+ */
+static int
+pci_hostb_probe(device_t dev)
+{
+
+ if (pci_get_class(dev) == PCIC_BRIDGE &&
+ pci_get_subclass(dev) == PCIS_BRIDGE_HOST) {
+ device_set_desc(dev, "Host to PCI bridge");
+ device_quiet(dev);
+ return 0;
+ }
+ return ENXIO;
+}
+
+static int
+pci_hostb_attach(device_t dev)
+{
+
+ return 0;
+}
+
+static device_method_t pci_hostb_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, pci_hostb_probe),
+ DEVMETHOD(device_attach, pci_hostb_attach),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+ DEVMETHOD(device_suspend, bus_generic_suspend),
+ DEVMETHOD(device_resume, bus_generic_resume),
+
+ { 0, 0 }
+};
+static driver_t pci_hostb_driver = {
+ "hostb",
+ pci_hostb_methods,
+ 1,
+};
+static devclass_t pci_hostb_devclass;
+
+DRIVER_MODULE(hostb, pci, pci_hostb_driver, pci_hostb_devclass, 0, 0);
+
+
/*
* Install placeholder to claim the resources owned by the
* PCI bus interface. This could be used to extract the
diff --git a/sys/amd64/pci/pci_cfgreg.c b/sys/amd64/pci/pci_cfgreg.c
index 41e2226..2dd6694 100644
--- a/sys/amd64/pci/pci_cfgreg.c
+++ b/sys/amd64/pci/pci_cfgreg.c
@@ -595,6 +595,8 @@ nexus_pcib_identify(driver_t *driver, device_t parent)
u_int32_t id;
u_int8_t class, subclass, busnum;
const char *s;
+ device_t *devs;
+ int ndevs, i;
id = nexus_pcib_read_config(0, bus, slot, func,
PCIR_DEVVENDOR, 4);
@@ -608,26 +610,48 @@ nexus_pcib_identify(driver_t *driver, device_t parent)
s = nexus_pcib_is_host_bridge(bus, slot, func,
id, class, subclass,
&busnum);
- if (s) {
- /*
- * Add at priority 100 to make sure we
- * go after any motherboard resources
- */
- child = BUS_ADD_CHILD(parent, 100,
- "pcib", busnum);
- device_set_desc(child, s);
-
- ivar = malloc(sizeof ivar[0], M_DEVBUF,
- M_NOWAIT);
- if (ivar == NULL)
- panic("out of memory");
- device_set_ivars(child, ivar);
- ivar[0] = busnum;
-
- found = 1;
- if (id == 0x12258086)
- found824xx = 1;
+ if (s == NULL)
+ continue;
+
+ /*
+ * Check to see if the physical bus has already
+ * been seen. Eg: hybrid 32 and 64 bit host
+ * bridges to the same logical bus.
+ */
+ if (device_get_children(parent, &devs, &ndevs) == 0) {
+ for (i = 0; s != NULL && i < ndevs; i++) {
+ if (strcmp(device_get_name(devs[i]),
+ "pcib") != 0)
+ continue;
+ ivar = device_get_ivars(devs[i]);
+ if (ivar == NULL)
+ continue;
+ if (busnum == *ivar)
+ s = NULL;
+ }
+ free(devs, M_TEMP);
}
+
+ if (s == NULL)
+ continue;
+ /*
+ * Add at priority 100 to make sure we
+ * go after any motherboard resources
+ */
+ child = BUS_ADD_CHILD(parent, 100,
+ "pcib", busnum);
+ device_set_desc(child, s);
+
+ ivar = malloc(sizeof ivar[0], M_DEVBUF,
+ M_NOWAIT);
+ if (ivar == NULL)
+ panic("out of memory");
+ device_set_ivars(child, ivar);
+ ivar[0] = busnum;
+
+ found = 1;
+ if (id == 0x12258086)
+ found824xx = 1;
}
}
if (found824xx && bus == 0) {
@@ -734,6 +758,52 @@ static driver_t nexus_pcib_driver = {
DRIVER_MODULE(pcib, nexus, nexus_pcib_driver, pcib_devclass, 0, 0);
+
+/*
+ * Provide a device to "eat" the host->pci bridges that we dug up above
+ * and stop them showing up twice on the probes. This also stops them
+ * showing up as 'none' in pciconf -l.
+ */
+static int
+pci_hostb_probe(device_t dev)
+{
+
+ if (pci_get_class(dev) == PCIC_BRIDGE &&
+ pci_get_subclass(dev) == PCIS_BRIDGE_HOST) {
+ device_set_desc(dev, "Host to PCI bridge");
+ device_quiet(dev);
+ return 0;
+ }
+ return ENXIO;
+}
+
+static int
+pci_hostb_attach(device_t dev)
+{
+
+ return 0;
+}
+
+static device_method_t pci_hostb_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, pci_hostb_probe),
+ DEVMETHOD(device_attach, pci_hostb_attach),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+ DEVMETHOD(device_suspend, bus_generic_suspend),
+ DEVMETHOD(device_resume, bus_generic_resume),
+
+ { 0, 0 }
+};
+static driver_t pci_hostb_driver = {
+ "hostb",
+ pci_hostb_methods,
+ 1,
+};
+static devclass_t pci_hostb_devclass;
+
+DRIVER_MODULE(hostb, pci, pci_hostb_driver, pci_hostb_devclass, 0, 0);
+
+
/*
* Install placeholder to claim the resources owned by the
* PCI bus interface. This could be used to extract the
diff --git a/sys/i386/isa/pcibus.c b/sys/i386/isa/pcibus.c
index 41e2226..2dd6694 100644
--- a/sys/i386/isa/pcibus.c
+++ b/sys/i386/isa/pcibus.c
@@ -595,6 +595,8 @@ nexus_pcib_identify(driver_t *driver, device_t parent)
u_int32_t id;
u_int8_t class, subclass, busnum;
const char *s;
+ device_t *devs;
+ int ndevs, i;
id = nexus_pcib_read_config(0, bus, slot, func,
PCIR_DEVVENDOR, 4);
@@ -608,26 +610,48 @@ nexus_pcib_identify(driver_t *driver, device_t parent)
s = nexus_pcib_is_host_bridge(bus, slot, func,
id, class, subclass,
&busnum);
- if (s) {
- /*
- * Add at priority 100 to make sure we
- * go after any motherboard resources
- */
- child = BUS_ADD_CHILD(parent, 100,
- "pcib", busnum);
- device_set_desc(child, s);
-
- ivar = malloc(sizeof ivar[0], M_DEVBUF,
- M_NOWAIT);
- if (ivar == NULL)
- panic("out of memory");
- device_set_ivars(child, ivar);
- ivar[0] = busnum;
-
- found = 1;
- if (id == 0x12258086)
- found824xx = 1;
+ if (s == NULL)
+ continue;
+
+ /*
+ * Check to see if the physical bus has already
+ * been seen. Eg: hybrid 32 and 64 bit host
+ * bridges to the same logical bus.
+ */
+ if (device_get_children(parent, &devs, &ndevs) == 0) {
+ for (i = 0; s != NULL && i < ndevs; i++) {
+ if (strcmp(device_get_name(devs[i]),
+ "pcib") != 0)
+ continue;
+ ivar = device_get_ivars(devs[i]);
+ if (ivar == NULL)
+ continue;
+ if (busnum == *ivar)
+ s = NULL;
+ }
+ free(devs, M_TEMP);
}
+
+ if (s == NULL)
+ continue;
+ /*
+ * Add at priority 100 to make sure we
+ * go after any motherboard resources
+ */
+ child = BUS_ADD_CHILD(parent, 100,
+ "pcib", busnum);
+ device_set_desc(child, s);
+
+ ivar = malloc(sizeof ivar[0], M_DEVBUF,
+ M_NOWAIT);
+ if (ivar == NULL)
+ panic("out of memory");
+ device_set_ivars(child, ivar);
+ ivar[0] = busnum;
+
+ found = 1;
+ if (id == 0x12258086)
+ found824xx = 1;
}
}
if (found824xx && bus == 0) {
@@ -734,6 +758,52 @@ static driver_t nexus_pcib_driver = {
DRIVER_MODULE(pcib, nexus, nexus_pcib_driver, pcib_devclass, 0, 0);
+
+/*
+ * Provide a device to "eat" the host->pci bridges that we dug up above
+ * and stop them showing up twice on the probes. This also stops them
+ * showing up as 'none' in pciconf -l.
+ */
+static int
+pci_hostb_probe(device_t dev)
+{
+
+ if (pci_get_class(dev) == PCIC_BRIDGE &&
+ pci_get_subclass(dev) == PCIS_BRIDGE_HOST) {
+ device_set_desc(dev, "Host to PCI bridge");
+ device_quiet(dev);
+ return 0;
+ }
+ return ENXIO;
+}
+
+static int
+pci_hostb_attach(device_t dev)
+{
+
+ return 0;
+}
+
+static device_method_t pci_hostb_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, pci_hostb_probe),
+ DEVMETHOD(device_attach, pci_hostb_attach),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+ DEVMETHOD(device_suspend, bus_generic_suspend),
+ DEVMETHOD(device_resume, bus_generic_resume),
+
+ { 0, 0 }
+};
+static driver_t pci_hostb_driver = {
+ "hostb",
+ pci_hostb_methods,
+ 1,
+};
+static devclass_t pci_hostb_devclass;
+
+DRIVER_MODULE(hostb, pci, pci_hostb_driver, pci_hostb_devclass, 0, 0);
+
+
/*
* Install placeholder to claim the resources owned by the
* PCI bus interface. This could be used to extract the
diff --git a/sys/i386/pci/pci_bus.c b/sys/i386/pci/pci_bus.c
index 41e2226..2dd6694 100644
--- a/sys/i386/pci/pci_bus.c
+++ b/sys/i386/pci/pci_bus.c
@@ -595,6 +595,8 @@ nexus_pcib_identify(driver_t *driver, device_t parent)
u_int32_t id;
u_int8_t class, subclass, busnum;
const char *s;
+ device_t *devs;
+ int ndevs, i;
id = nexus_pcib_read_config(0, bus, slot, func,
PCIR_DEVVENDOR, 4);
@@ -608,26 +610,48 @@ nexus_pcib_identify(driver_t *driver, device_t parent)
s = nexus_pcib_is_host_bridge(bus, slot, func,
id, class, subclass,
&busnum);
- if (s) {
- /*
- * Add at priority 100 to make sure we
- * go after any motherboard resources
- */
- child = BUS_ADD_CHILD(parent, 100,
- "pcib", busnum);
- device_set_desc(child, s);
-
- ivar = malloc(sizeof ivar[0], M_DEVBUF,
- M_NOWAIT);
- if (ivar == NULL)
- panic("out of memory");
- device_set_ivars(child, ivar);
- ivar[0] = busnum;
-
- found = 1;
- if (id == 0x12258086)
- found824xx = 1;
+ if (s == NULL)
+ continue;
+
+ /*
+ * Check to see if the physical bus has already
+ * been seen. Eg: hybrid 32 and 64 bit host
+ * bridges to the same logical bus.
+ */
+ if (device_get_children(parent, &devs, &ndevs) == 0) {
+ for (i = 0; s != NULL && i < ndevs; i++) {
+ if (strcmp(device_get_name(devs[i]),
+ "pcib") != 0)
+ continue;
+ ivar = device_get_ivars(devs[i]);
+ if (ivar == NULL)
+ continue;
+ if (busnum == *ivar)
+ s = NULL;
+ }
+ free(devs, M_TEMP);
}
+
+ if (s == NULL)
+ continue;
+ /*
+ * Add at priority 100 to make sure we
+ * go after any motherboard resources
+ */
+ child = BUS_ADD_CHILD(parent, 100,
+ "pcib", busnum);
+ device_set_desc(child, s);
+
+ ivar = malloc(sizeof ivar[0], M_DEVBUF,
+ M_NOWAIT);
+ if (ivar == NULL)
+ panic("out of memory");
+ device_set_ivars(child, ivar);
+ ivar[0] = busnum;
+
+ found = 1;
+ if (id == 0x12258086)
+ found824xx = 1;
}
}
if (found824xx && bus == 0) {
@@ -734,6 +758,52 @@ static driver_t nexus_pcib_driver = {
DRIVER_MODULE(pcib, nexus, nexus_pcib_driver, pcib_devclass, 0, 0);
+
+/*
+ * Provide a device to "eat" the host->pci bridges that we dug up above
+ * and stop them showing up twice on the probes. This also stops them
+ * showing up as 'none' in pciconf -l.
+ */
+static int
+pci_hostb_probe(device_t dev)
+{
+
+ if (pci_get_class(dev) == PCIC_BRIDGE &&
+ pci_get_subclass(dev) == PCIS_BRIDGE_HOST) {
+ device_set_desc(dev, "Host to PCI bridge");
+ device_quiet(dev);
+ return 0;
+ }
+ return ENXIO;
+}
+
+static int
+pci_hostb_attach(device_t dev)
+{
+
+ return 0;
+}
+
+static device_method_t pci_hostb_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, pci_hostb_probe),
+ DEVMETHOD(device_attach, pci_hostb_attach),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+ DEVMETHOD(device_suspend, bus_generic_suspend),
+ DEVMETHOD(device_resume, bus_generic_resume),
+
+ { 0, 0 }
+};
+static driver_t pci_hostb_driver = {
+ "hostb",
+ pci_hostb_methods,
+ 1,
+};
+static devclass_t pci_hostb_devclass;
+
+DRIVER_MODULE(hostb, pci, pci_hostb_driver, pci_hostb_devclass, 0, 0);
+
+
/*
* Install placeholder to claim the resources owned by the
* PCI bus interface. This could be used to extract the
diff --git a/sys/i386/pci/pci_cfgreg.c b/sys/i386/pci/pci_cfgreg.c
index 41e2226..2dd6694 100644
--- a/sys/i386/pci/pci_cfgreg.c
+++ b/sys/i386/pci/pci_cfgreg.c
@@ -595,6 +595,8 @@ nexus_pcib_identify(driver_t *driver, device_t parent)
u_int32_t id;
u_int8_t class, subclass, busnum;
const char *s;
+ device_t *devs;
+ int ndevs, i;
id = nexus_pcib_read_config(0, bus, slot, func,
PCIR_DEVVENDOR, 4);
@@ -608,26 +610,48 @@ nexus_pcib_identify(driver_t *driver, device_t parent)
s = nexus_pcib_is_host_bridge(bus, slot, func,
id, class, subclass,
&busnum);
- if (s) {
- /*
- * Add at priority 100 to make sure we
- * go after any motherboard resources
- */
- child = BUS_ADD_CHILD(parent, 100,
- "pcib", busnum);
- device_set_desc(child, s);
-
- ivar = malloc(sizeof ivar[0], M_DEVBUF,
- M_NOWAIT);
- if (ivar == NULL)
- panic("out of memory");
- device_set_ivars(child, ivar);
- ivar[0] = busnum;
-
- found = 1;
- if (id == 0x12258086)
- found824xx = 1;
+ if (s == NULL)
+ continue;
+
+ /*
+ * Check to see if the physical bus has already
+ * been seen. Eg: hybrid 32 and 64 bit host
+ * bridges to the same logical bus.
+ */
+ if (device_get_children(parent, &devs, &ndevs) == 0) {
+ for (i = 0; s != NULL && i < ndevs; i++) {
+ if (strcmp(device_get_name(devs[i]),
+ "pcib") != 0)
+ continue;
+ ivar = device_get_ivars(devs[i]);
+ if (ivar == NULL)
+ continue;
+ if (busnum == *ivar)
+ s = NULL;
+ }
+ free(devs, M_TEMP);
}
+
+ if (s == NULL)
+ continue;
+ /*
+ * Add at priority 100 to make sure we
+ * go after any motherboard resources
+ */
+ child = BUS_ADD_CHILD(parent, 100,
+ "pcib", busnum);
+ device_set_desc(child, s);
+
+ ivar = malloc(sizeof ivar[0], M_DEVBUF,
+ M_NOWAIT);
+ if (ivar == NULL)
+ panic("out of memory");
+ device_set_ivars(child, ivar);
+ ivar[0] = busnum;
+
+ found = 1;
+ if (id == 0x12258086)
+ found824xx = 1;
}
}
if (found824xx && bus == 0) {
@@ -734,6 +758,52 @@ static driver_t nexus_pcib_driver = {
DRIVER_MODULE(pcib, nexus, nexus_pcib_driver, pcib_devclass, 0, 0);
+
+/*
+ * Provide a device to "eat" the host->pci bridges that we dug up above
+ * and stop them showing up twice on the probes. This also stops them
+ * showing up as 'none' in pciconf -l.
+ */
+static int
+pci_hostb_probe(device_t dev)
+{
+
+ if (pci_get_class(dev) == PCIC_BRIDGE &&
+ pci_get_subclass(dev) == PCIS_BRIDGE_HOST) {
+ device_set_desc(dev, "Host to PCI bridge");
+ device_quiet(dev);
+ return 0;
+ }
+ return ENXIO;
+}
+
+static int
+pci_hostb_attach(device_t dev)
+{
+
+ return 0;
+}
+
+static device_method_t pci_hostb_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, pci_hostb_probe),
+ DEVMETHOD(device_attach, pci_hostb_attach),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+ DEVMETHOD(device_suspend, bus_generic_suspend),
+ DEVMETHOD(device_resume, bus_generic_resume),
+
+ { 0, 0 }
+};
+static driver_t pci_hostb_driver = {
+ "hostb",
+ pci_hostb_methods,
+ 1,
+};
+static devclass_t pci_hostb_devclass;
+
+DRIVER_MODULE(hostb, pci, pci_hostb_driver, pci_hostb_devclass, 0, 0);
+
+
/*
* Install placeholder to claim the resources owned by the
* PCI bus interface. This could be used to extract the
diff --git a/sys/i386/pci/pci_pir.c b/sys/i386/pci/pci_pir.c
index 41e2226..2dd6694 100644
--- a/sys/i386/pci/pci_pir.c
+++ b/sys/i386/pci/pci_pir.c
@@ -595,6 +595,8 @@ nexus_pcib_identify(driver_t *driver, device_t parent)
u_int32_t id;
u_int8_t class, subclass, busnum;
const char *s;
+ device_t *devs;
+ int ndevs, i;
id = nexus_pcib_read_config(0, bus, slot, func,
PCIR_DEVVENDOR, 4);
@@ -608,26 +610,48 @@ nexus_pcib_identify(driver_t *driver, device_t parent)
s = nexus_pcib_is_host_bridge(bus, slot, func,
id, class, subclass,
&busnum);
- if (s) {
- /*
- * Add at priority 100 to make sure we
- * go after any motherboard resources
- */
- child = BUS_ADD_CHILD(parent, 100,
- "pcib", busnum);
- device_set_desc(child, s);
-
- ivar = malloc(sizeof ivar[0], M_DEVBUF,
- M_NOWAIT);
- if (ivar == NULL)
- panic("out of memory");
- device_set_ivars(child, ivar);
- ivar[0] = busnum;
-
- found = 1;
- if (id == 0x12258086)
- found824xx = 1;
+ if (s == NULL)
+ continue;
+
+ /*
+ * Check to see if the physical bus has already
+ * been seen. Eg: hybrid 32 and 64 bit host
+ * bridges to the same logical bus.
+ */
+ if (device_get_children(parent, &devs, &ndevs) == 0) {
+ for (i = 0; s != NULL && i < ndevs; i++) {
+ if (strcmp(device_get_name(devs[i]),
+ "pcib") != 0)
+ continue;
+ ivar = device_get_ivars(devs[i]);
+ if (ivar == NULL)
+ continue;
+ if (busnum == *ivar)
+ s = NULL;
+ }
+ free(devs, M_TEMP);
}
+
+ if (s == NULL)
+ continue;
+ /*
+ * Add at priority 100 to make sure we
+ * go after any motherboard resources
+ */
+ child = BUS_ADD_CHILD(parent, 100,
+ "pcib", busnum);
+ device_set_desc(child, s);
+
+ ivar = malloc(sizeof ivar[0], M_DEVBUF,
+ M_NOWAIT);
+ if (ivar == NULL)
+ panic("out of memory");
+ device_set_ivars(child, ivar);
+ ivar[0] = busnum;
+
+ found = 1;
+ if (id == 0x12258086)
+ found824xx = 1;
}
}
if (found824xx && bus == 0) {
@@ -734,6 +758,52 @@ static driver_t nexus_pcib_driver = {
DRIVER_MODULE(pcib, nexus, nexus_pcib_driver, pcib_devclass, 0, 0);
+
+/*
+ * Provide a device to "eat" the host->pci bridges that we dug up above
+ * and stop them showing up twice on the probes. This also stops them
+ * showing up as 'none' in pciconf -l.
+ */
+static int
+pci_hostb_probe(device_t dev)
+{
+
+ if (pci_get_class(dev) == PCIC_BRIDGE &&
+ pci_get_subclass(dev) == PCIS_BRIDGE_HOST) {
+ device_set_desc(dev, "Host to PCI bridge");
+ device_quiet(dev);
+ return 0;
+ }
+ return ENXIO;
+}
+
+static int
+pci_hostb_attach(device_t dev)
+{
+
+ return 0;
+}
+
+static device_method_t pci_hostb_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, pci_hostb_probe),
+ DEVMETHOD(device_attach, pci_hostb_attach),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+ DEVMETHOD(device_suspend, bus_generic_suspend),
+ DEVMETHOD(device_resume, bus_generic_resume),
+
+ { 0, 0 }
+};
+static driver_t pci_hostb_driver = {
+ "hostb",
+ pci_hostb_methods,
+ 1,
+};
+static devclass_t pci_hostb_devclass;
+
+DRIVER_MODULE(hostb, pci, pci_hostb_driver, pci_hostb_devclass, 0, 0);
+
+
/*
* Install placeholder to claim the resources owned by the
* PCI bus interface. This could be used to extract the
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