/*------------------ Private Device Attachment Functions --------------------*/
static void
privcmd_identify(driver_t *driver, device_t parent)
{
KASSERT(xen_domain(),
("Trying to attach privcmd device on non Xen domain"));
if (BUS_ADD_CHILD(parent, 0, "privcmd", 0) == NULL)
panic("unable to attach privcmd user-space device");
}
static void
vpo_identify(driver_t *driver, device_t parent)
{
device_t dev;
dev = device_find_child(parent, "vpo", -1);
if (!dev)
BUS_ADD_CHILD(parent, 0, "vpo", -1);
}
static void
wiibus_identify(driver_t *driver, device_t parent)
{
if (strcmp(installed_platform(), "wii") != 0)
return;
if (device_find_child(parent, "wiibus", -1) == NULL)
BUS_ADD_CHILD(parent, 0, "wiibus", 0);
}
static void
spibus_hinted_child(device_t bus, const char *dname, int dunit)
{
device_t child;
struct spibus_ivar *devi;
child = BUS_ADD_CHILD(bus, 0, dname, dunit);
devi = SPIBUS_IVAR(child);
resource_int_value(dname, dunit, "cs", &devi->cs);
}
static void
vmbus_identify(driver_t *driver, device_t parent)
{
if (!hv_vmbus_query_hypervisor_presence())
return;
vm_guest = VM_GUEST_HV;
BUS_ADD_CHILD(parent, 0, "vmbus", 0);
}
static void
iicbus_hinted_child(device_t bus, const char *dname, int dunit)
{
device_t child;
struct iicbus_ivar *devi;
child = BUS_ADD_CHILD(bus, 0, dname, dunit);
devi = IICBUS_IVAR(child);
resource_int_value(dname, dunit, "addr", &devi->addr);
}
static void
sc_identify(driver_t *driver, device_t parent)
{
/*
* Add with a priority guaranteed to make it last on
* the device list.
*/
BUS_ADD_CHILD(parent, INT_MAX, SC_DRIVER_NAME, 0);
}
static void
bcm2835_cpufreq_identify(driver_t *driver, device_t parent)
{
DPRINTF("driver=%p, parent=%p\n", driver, parent);
if (device_find_child(parent, "bcm2835_cpufreq", -1) != NULL)
return;
if (BUS_ADD_CHILD(parent, 0, "bcm2835_cpufreq", -1) == NULL)
device_printf(parent, "add child failed\n");
}
/*
* Locate the ACPI timer using the FADT, set up and allocate the I/O resources
* we will be using.
*/
static int
acpi_hpet_identify(driver_t *driver, device_t parent)
{
ACPI_TABLE_HPET *hpet;
ACPI_TABLE_HEADER *hdr;
ACPI_STATUS status;
device_t child;
/*
* Just try once, do nothing if the 'acpi' bus is rescanned.
*/
if (device_get_state(parent) == DS_ATTACHED)
return 0;
ACPI_FUNCTION_TRACE((char *)(uintptr_t) __func__);
/* Only one HPET device can be added. */
if (devclass_get_device(acpi_hpet_devclass, 0))
return ENXIO;
/* Currently, ID and minimum clock tick info is unused. */
status = AcpiGetTable(ACPI_SIG_HPET, 1, &hdr);
if (ACPI_FAILURE(status))
return ENXIO;
/*
* The unit number could be derived from hdr->Sequence but we only
* support one HPET device.
*/
hpet = (ACPI_TABLE_HPET *)hdr;
if (hpet->Sequence != 0) {
kprintf("ACPI HPET table warning: Sequence is non-zero (%d)\n",
hpet->Sequence);
}
child = BUS_ADD_CHILD(parent, parent, 0, "acpi_hpet", 0);
if (child == NULL) {
device_printf(parent, "%s: can't add acpi_hpet0\n", __func__);
return ENXIO;
}
/* Record a magic value so we can detect this device later. */
acpi_set_magic(child, (uintptr_t)&acpi_hpet_devclass);
acpi_hpet_res_start = hpet->Address.Address;
if (bus_set_resource(child, SYS_RES_MEMORY, 0,
hpet->Address.Address, HPET_MEM_WIDTH, -1)) {
device_printf(child, "could not set iomem resources: "
"0x%jx, %d\n", (uintmax_t)hpet->Address.Address,
HPET_MEM_WIDTH);
return ENOMEM;
}
return 0;
}
static int
legacy_attach(device_t dev)
{
device_t child;
/*
* Let our child drivers identify any child devices that they
* can find. Once that is done attach any devices that we
* found.
*/
bus_generic_probe(dev);
bus_generic_attach(dev);
#ifndef PC98
/*
* If we didn't see EISA or ISA on a pci bridge, create some
* connection points now so they show up "on motherboard".
*/
if (!devclass_get_device(devclass_find("eisa"), 0)) {
child = BUS_ADD_CHILD(dev, 0, "eisa", 0);
if (child == NULL)
panic("legacy_attach eisa");
device_probe_and_attach(child);
}
#endif
#ifdef DEV_MCA
if (MCA_system && !devclass_get_device(devclass_find("mca"), 0)) {
child = BUS_ADD_CHILD(dev, 0, "mca", 0);
if (child == 0)
panic("legacy_probe mca");
device_probe_and_attach(child);
}
#endif
if (!devclass_get_device(devclass_find("isa"), 0)) {
child = BUS_ADD_CHILD(dev, 0, "isa", 0);
if (child == NULL)
panic("legacy_attach isa");
device_probe_and_attach(child);
}
return 0;
}
static int
nexus_acpi_attach(device_t dev)
{
nexus_init_resources();
bus_generic_probe(dev);
if (BUS_ADD_CHILD(dev, 10, "acpi", 0) == NULL)
panic("failed to add acpi0 device");
return (bus_generic_attach(dev));
}
/*
* Define the syscons nexus device attachment
*/
static void
ofwfb_scidentify(driver_t *driver, device_t parent)
{
device_t child;
/*
* Add with a priority guaranteed to make it last on
* the device list
*/
child = BUS_ADD_CHILD(parent, INT_MAX, SC_DRIVER_NAME, 0);
}
static void
ixp425_hinted_child(device_t bus, const char *dname, int dunit)
{
device_t child;
struct ixp425_ivar *ivar;
child = BUS_ADD_CHILD(bus, 0, dname, dunit);
ivar = IXP425_IVAR(child);
resource_int_value(dname, dunit, "addr", &ivar->addr);
resource_int_value(dname, dunit, "irq", &ivar->irq);
}
static void
octm_identify(driver_t *drv, device_t parent)
{
unsigned i;
if (!octeon_has_feature(OCTEON_FEATURE_MGMT_PORT))
return;
for (i = 0; i < CVMX_MGMT_PORT_NUM_PORTS; i++)
BUS_ADD_CHILD(parent, 0, "octm", i);
}
static void
ofwbus_identify(driver_t *driver, device_t parent)
{
/* Check if Open Firmware has been instantiated */
if (OF_peer(0) == 0)
return;
if (device_find_child(parent, "ofwbus", -1) == NULL)
BUS_ADD_CHILD(parent, 0, "ofwbus", -1);
}
static void
xc_identify(driver_t *driver, device_t parent)
{
device_t child;
if (!xen_pv_domain())
return;
child = BUS_ADD_CHILD(parent, 0, driver_name, 0);
device_set_driver(child, driver);
device_set_desc(child, "Xen Console");
}
static void
gic_v3_acpi_identify(driver_t *driver, device_t parent)
{
struct madt_table_data madt_data;
ACPI_TABLE_MADT *madt;
vm_paddr_t physaddr;
device_t dev;
physaddr = acpi_find_table(ACPI_SIG_MADT);
if (physaddr == 0)
return;
madt = acpi_map_table(physaddr, ACPI_SIG_MADT);
if (madt == NULL) {
device_printf(parent, "gic: Unable to map the MADT\n");
return;
}
madt_data.parent = parent;
madt_data.dist = NULL;
madt_data.count = 0;
acpi_walk_subtables(madt + 1, (char *)madt + madt->Header.Length,
madt_handler, &madt_data);
if (madt_data.dist == NULL) {
device_printf(parent,
"No gic interrupt or distributor table\n");
goto out;
}
/* This is for the wrong GIC version */
if (madt_data.dist->Version != ACPI_MADT_GIC_VERSION_V3)
goto out;
dev = BUS_ADD_CHILD(parent, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE,
"gic", -1);
if (dev == NULL) {
device_printf(parent, "add gic child failed\n");
goto out;
}
/* Add the MADT data */
BUS_SET_RESOURCE(parent, dev, SYS_RES_MEMORY, 0,
madt_data.dist->BaseAddress, 128 * 1024);
madt_data.dev = dev;
acpi_walk_subtables(madt + 1, (char *)madt + madt->Header.Length,
rdist_map, &madt_data);
acpi_set_private(dev, (void *)(uintptr_t)madt_data.dist->Version);
out:
acpi_unmap_table(madt);
}
static void
efirtc_identify(driver_t *driver, device_t parent)
{
/* Don't add the driver unless we have working runtime services. */
if (efi_rt_ok() != 0)
return;
if (device_find_child(parent, "efirtc", -1) != NULL)
return;
if (BUS_ADD_CHILD(parent, 0, "efirtc", -1) == NULL)
device_printf(parent, "add child failed\n");
}
static void
nexus_hinted_child(device_t bus, const char *dname, int dunit)
{
device_t child;
long maddr;
int msize;
int order;
int result;
int irq;
int mem_hints_count;
if ((resource_int_value(dname, dunit, "order", &order)) != 0)
order = 1000;
child = BUS_ADD_CHILD(bus, order, dname, dunit);
if (child == NULL)
return;
/*
* Set hard-wired resources for hinted child using
* specific RIDs.
*/
mem_hints_count = 0;
if (resource_long_value(dname, dunit, "maddr", &maddr) == 0)
mem_hints_count++;
if (resource_int_value(dname, dunit, "msize", &msize) == 0)
mem_hints_count++;
/* check if all info for mem resource has been provided */
if ((mem_hints_count > 0) && (mem_hints_count < 2)) {
printf("Either maddr or msize hint is missing for %s%d\n",
dname, dunit);
}
else if (mem_hints_count) {
dprintf("%s: discovered hinted child %s at maddr %p(%d)\n",
__func__, device_get_nameunit(child),
(void *)(intptr_t)maddr, msize);
result = bus_set_resource(child, SYS_RES_MEMORY, 0, maddr,
msize);
if (result != 0) {
device_printf(bus,
"warning: bus_set_resource() failed\n");
}
}
if (resource_int_value(dname, dunit, "irq", &irq) == 0) {
result = bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1);
if (result != 0)
device_printf(bus,
"warning: bus_set_resource() failed\n");
}
}
static void
xendebug_identify(driver_t *driver, device_t parent)
{
KASSERT(xen_domain(),
("Trying to add Xen debug device to non-xen guest"));
if (xen_hvm_domain() && !xen_vector_callback_enabled)
return;
if (BUS_ADD_CHILD(parent, 0, "debug", 0) == NULL)
panic("Unable to add Xen debug device.");
}
static void
cferes_identify(driver_t* driver, device_t parent)
{
device_t child;
int i;
struct resource *res;
int result;
int rid;
struct cferes_softc *sc;
uint64_t addr, len, type;
child = BUS_ADD_CHILD(parent, 100, "cferes", -1);
device_set_driver(child, driver);
sc = device_get_softc(child);
sc->rnum = 0;
for (i = 0; i < ~0U; i++) {
result = cfe_enummem(i, CFE_FLG_FULL_ARENA, &addr, &len, &type);
if (result < 0)
break;
if (type != CFE_MI_RESERVED) {
if (bootverbose)
printf("%s: skipping non reserved range 0x%0jx(%jd)\n",
device_getnameunit(child),
(uintmax_t)addr, (uintmax_t)len);
continue;
}
bus_set_resource(child, SYS_RES_MEMORY, sc->rnum, addr, len);
rid = sc->rnum;
res = bus_alloc_resource_any(child, SYS_RES_MEMORY, &rid, 0);
if (res == NULL) {
bus_delete_resource(child, SYS_RES_MEMORY, sc->rnum);
continue;
}
sc->rid[sc->rnum] = rid;
sc->res[sc->rnum] = res;
sc->rnum++;
if (sc->rnum == MAX_CFE_RESERVATIONS)
break;
}
if (sc->rnum == 0) {
device_delete_child(parent, child);
return;
}
device_set_desc(child, "CFE reserved memory");
}
static void
isahint_add_device(device_t parent, const char *name, int unit)
{
device_t child;
int sensitive, start, count, t;
int order;
/* device-specific flag overrides any wildcard */
sensitive = 0;
if (resource_int_value(name, unit, "sensitive", &sensitive) != 0)
resource_int_value(name, -1, "sensitive", &sensitive);
if (sensitive)
order = ISA_ORDER_SENSITIVE;
else
order = ISA_ORDER_SPECULATIVE;
child = BUS_ADD_CHILD(parent, parent, order, name, unit);
if (child == 0)
return;
start = 0;
count = 0;
resource_int_value(name, unit, "port", &start);
resource_int_value(name, unit, "portsize", &count);
if (start > 0 || count > 0)
bus_set_resource(child, SYS_RES_IOPORT, 0, start, count, -1);
start = 0;
count = 0;
resource_int_value(name, unit, "maddr", &start);
resource_int_value(name, unit, "msize", &count);
if (start > 0 || count > 0)
bus_set_resource(child, SYS_RES_MEMORY, 0, start, count, -1);
if (resource_int_value(name, unit, "irq", &start) == 0 && start > 0) {
bus_set_resource(child, SYS_RES_IRQ, 0, start, 1,
machintr_legacy_intr_cpuid(start));
}
if (resource_int_value(name, unit, "drq", &start) == 0 && start >= 0)
bus_set_resource(child, SYS_RES_DRQ, 0, start, 1, -1);
if (resource_int_value(name, unit, "flags", &t) == 0)
device_set_flags(child, t);
if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0)
device_disable(child);
}
static void
uart_chipc_identify(driver_t *driver, device_t parent)
{
struct chipc_capabilities *caps;
caps = BHND_CHIPC_GET_CAPABILITIES(parent);
if (caps->num_uarts == 0)
return;
/*
* TODO: add more than one UART
*/
BUS_ADD_CHILD(parent, 0, "uart", -1);
}
static void
gpiobus_hinted_child(device_t bus, const char *dname, int dunit)
{
struct gpiobus_softc *sc = GPIOBUS_SOFTC(bus);
struct gpiobus_ivar *devi;
device_t child;
int pins;
child = BUS_ADD_CHILD(bus, 0, dname, dunit);
devi = GPIOBUS_IVAR(child);
resource_int_value(dname, dunit, "pins", &pins);
if (gpiobus_parse_pins(sc, child, pins))
device_delete_child(bus, child);
}
static void
pmtimer_identify(driver_t *driver, device_t parent)
{
device_t child;
/*
* Only add a child if one doesn't exist already.
*/
child = devclass_get_device(pmtimer_devclass, 0);
if (child == NULL) {
child = BUS_ADD_CHILD(parent, 0, "pmtimer", 0);
if (child == NULL)
panic("pmtimer_identify");
}
}
static int
nandsim_start_ctrl(int num)
{
device_t nexus, ndev;
devclass_t nexus_devclass;
int ret = 0;
nand_debug(NDBG_SIM,"start ctlr num:%d", num);
if (num >= MAX_SIM_DEV)
return (EINVAL);
if (!ctrls[num].created)
return (ENODEV);
if (ctrls[num].running)
return (EBUSY);
/* We will add our device as a child of the nexus0 device */
if (!(nexus_devclass = devclass_find("nexus")) ||
!(nexus = devclass_get_device(nexus_devclass, 0)))
return (EFAULT);
/*
* Create a newbus device representing this frontend instance
*
* XXX powerpc nexus doesn't implement bus_add_child, so child
* must be added by device_add_child().
*/
#if defined(__powerpc__)
ndev = device_add_child(nexus, "nandsim", num);
#else
ndev = BUS_ADD_CHILD(nexus, 0, "nandsim", num);
#endif
if (!ndev)
return (EFAULT);
mtx_lock(&Giant);
ret = device_probe_and_attach(ndev);
mtx_unlock(&Giant);
if (ret == 0) {
ctrls[num].sim_ctrl_dev = ndev;
ctrls[num].running = 1;
}
return (ret);
}
static void
iicbus_hinted_child(device_t bus, const char *dname, int dunit)
{
device_t child;
int irq;
struct iicbus_ivar *devi;
child = BUS_ADD_CHILD(bus, 0, dname, dunit);
devi = IICBUS_IVAR(child);
resource_int_value(dname, dunit, "addr", &devi->addr);
if (resource_int_value(dname, dunit, "irq", &irq) == 0) {
if (bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1) != 0)
device_printf(bus,
"warning: bus_set_resource() failed\n");
}
}
static void
atpic_isa_identify(driver_t *drv, device_t parent)
{
device_t child;
child = BUS_ADD_CHILD(parent, ISA_ORDER_SENSITIVE, drv->name, -1);
device_set_driver(child, drv);
isa_set_logicalid(child, atpic_ids[0].ip_id);
isa_set_vendorid(child, atpic_ids[0].ip_id);
bus_set_resource(child, SYS_RES_IOPORT, ATPIC_MASTER, IO_ICU1, 2);
bus_set_resource(child, SYS_RES_IOPORT, ATPIC_SLAVE, IO_ICU2, 2);
/* ISA interrupts are routed through external interrupt 0. */
bus_set_resource(child, SYS_RES_IRQ, 0, PIC_IRQ_EXT(0), 1);
}
static int
nexus_attach(device_t dev)
{
/*
* Mask the legacy PICs - we will use the I/O SAPIC for interrupt.
*/
outb(IO_ICU1+1, 0xff);
outb(IO_ICU2+1, 0xff);
if (acpi_identify() == 0)
BUS_ADD_CHILD(dev, 10, "acpi", 0);
clock_register(dev, 1000);
bus_generic_attach(dev);
return 0;
}
static void
cpu_identify(driver_t *driver, device_t parent)
{
device_t child;
int i;
/*
* Attach a cpuX device for each CPU. We use an order of 150
* so that these devices are attached after the Host-PCI
* bridges (which are added at order 100).
*/
CPU_FOREACH(i) {
child = BUS_ADD_CHILD(parent, 150, "cpu", i);
if (child == NULL)
panic("legacy_attach cpu");
}
}
