/*-
* Copyright (c) 2015 Landon Fuller <landon@landonf.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGES.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Broadcom Home Networking Division (HND) Bus Driver.
*
* The Broadcom HND family of devices consists of both SoCs and host-connected
* networking chipsets containing a common family of Broadcom IP cores,
* including an integrated MIPS and/or ARM cores.
*
* HND devices expose a nearly identical interface whether accessible over a
* native SoC interconnect, or when connected via a host interface such as
* PCIe. As a result, the majority of hardware support code should be re-usable
* across host drivers for HND networking chipsets, as well as FreeBSD support
* for Broadcom MIPS/ARM HND SoCs.
*
* Earlier HND models used the siba(4) on-chip interconnect, while later models
* use bcma(4); the programming model is almost entirely independent
* of the actual underlying interconect.
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include "bhnd.h"
#include "bhndvar.h"
MALLOC_DEFINE(M_BHND, "bhnd", "bhnd bus data structures");
/**
* bhnd_generic_probe_nomatch() reporting configuration.
*/
static const struct bhnd_nomatch {
uint16_t vendor; /**< core designer */
uint16_t device; /**< core id */
bool if_verbose; /**< print when bootverbose is set. */
} bhnd_nomatch_table[] = {
{ BHND_MFGID_ARM, BHND_COREID_OOB_ROUTER, true },
{ BHND_MFGID_ARM, BHND_COREID_EROM, true },
{ BHND_MFGID_ARM, BHND_COREID_PL301, true },
{ BHND_MFGID_ARM, BHND_COREID_APB_BRIDGE, true },
{ BHND_MFGID_ARM, BHND_COREID_AXI_UNMAPPED, false },
{ BHND_MFGID_INVALID, BHND_COREID_INVALID, false }
};
static int compare_ascending_probe_order(const void *lhs,
const void *rhs);
static int compare_descending_probe_order(const void *lhs,
const void *rhs);
/**
* Default bhnd(4) bus driver implementation of DEVICE_ATTACH().
*
* This implementation calls device_probe_and_attach() for each of the device's
* children, in bhnd probe order.
*/
int
bhnd_generic_attach(device_t dev)
{
device_t *devs;
int ndevs;
int error;
if (device_is_attached(dev))
return (EBUSY);
if ((error = device_get_children(dev, &devs, &ndevs)))
return (error);
qsort(devs, ndevs, sizeof(*devs), compare_ascending_probe_order);
for (int i = 0; i < ndevs; i++) {
device_t child = devs[i];
device_probe_and_attach(child);
}
free(devs, M_TEMP);
return (0);
}
/**
* Default bhnd(4) bus driver implementation of DEVICE_DETACH().
*
* This implementation calls device_detach() for each of the device's
* children, in reverse bhnd probe order, terminating if any call to
* device_detach() fails.
*/
int
bhnd_generic_detach(device_t dev)
{
device_t *devs;
int ndevs;
int error;
if (!device_is_attached(dev))
return (EBUSY);
if ((error = device_get_children(dev, &devs, &ndevs)))
return (error);
/* Detach in the reverse of attach order */
qsort(devs, ndevs, sizeof(*devs), compare_descending_probe_order);
for (int i = 0; i < ndevs; i++) {
device_t child = devs[i];
/* Terminate on first error */
if ((error = device_detach(child)))
goto cleanup;
}
cleanup:
free(devs, M_TEMP);
return (error);
}
/**
* Default bhnd(4) bus driver implementation of DEVICE_SHUTDOWN().
*
* This implementation calls device_shutdown() for each of the device's
* children, in reverse bhnd probe order, terminating if any call to
* device_shutdown() fails.
*/
int
bhnd_generic_shutdown(device_t dev)
{
device_t *devs;
int ndevs;
int error;
if (!device_is_attached(dev))
return (EBUSY);
if ((error = device_get_children(dev, &devs, &ndevs)))
return (error);
/* Shutdown in the reverse of attach order */
qsort(devs, ndevs, sizeof(*devs), compare_descending_probe_order);
for (int i = 0; i < ndevs; i++) {
device_t child = devs[i];
/* Terminate on first error */
if ((error = device_shutdown(child)))
goto cleanup;
}
cleanup:
free(devs, M_TEMP);
return (error);
}
/**
* Default bhnd(4) bus driver implementation of DEVICE_RESUME().
*
* This implementation calls BUS_RESUME_CHILD() for each of the device's
* children in bhnd probe order, terminating if any call to BUS_RESUME_CHILD()
* fails.
*/
int
bhnd_generic_resume(device_t dev)
{
device_t *devs;
int ndevs;
int error;
if (!device_is_attached(dev))
return (EBUSY);
if ((error = device_get_children(dev, &devs, &ndevs)))
return (error);
qsort(devs, ndevs, sizeof(*devs), compare_ascending_probe_order);
for (int i = 0; i < ndevs; i++) {
device_t child = devs[i];
/* Terminate on first error */
if ((error = BUS_RESUME_CHILD(device_get_parent(child), child)))
goto cleanup;
}
cleanup:
free(devs, M_TEMP);
return (error);
}
/**
* Default bhnd(4) bus driver implementation of DEVICE_SUSPEND().
*
* This implementation calls BUS_SUSPEND_CHILD() for each of the device's
* children in reverse bhnd probe order. If any call to BUS_SUSPEND_CHILD()
* fails, the suspend operation is terminated and any devices that were
* suspended are resumed immediately by calling their BUS_RESUME_CHILD()
* methods.
*/
int
bhnd_generic_suspend(device_t dev)
{
device_t *devs;
int ndevs;
int error;
if (!device_is_attached(dev))
return (EBUSY);
if ((error = device_get_children(dev, &devs, &ndevs)))
return (error);
/* Suspend in the reverse of attach order */
qsort(devs, ndevs, sizeof(*devs), compare_descending_probe_order);
for (int i = 0; i < ndevs; i++) {
device_t child = devs[i];
error = BUS_SUSPEND_CHILD(device_get_parent(child), child);
/* On error, resume suspended devices and then terminate */
if (error) {
for (int j = 0; j < i; j++) {
BUS_RESUME_CHILD(device_get_parent(devs[j]),
devs[j]);
}
goto cleanup;
}
}
cleanup:
free(devs, M_TEMP);
return (error);
}
/*
* Ascending comparison of bhnd device's probe order.
*/
static int
compare_ascending_probe_order(const void *lhs, const void *rhs)
{
device_t ldev, rdev;
int lorder, rorder;
ldev = (*(const device_t *) lhs);
rdev = (*(const device_t *) rhs);
lorder = BHND_BUS_GET_PROBE_ORDER(device_get_parent(ldev), ldev);
rorder = BHND_BUS_GET_PROBE_ORDER(device_get_parent(rdev), rdev);
if (lorder < rorder) {
return (-1);
} else if (lorder > rorder) {
return (1);
} else {
return (0);
}
}
/*
* Descending comparison of bhnd device's probe order.
*/
static int
compare_descending_probe_order(const void *lhs, const void *rhs)
{
return (compare_ascending_probe_order(rhs, lhs));
}
/**
* Default bhnd(4) bus driver implementation of BHND_BUS_GET_PROBE_ORDER().
*
* This implementation determines probe ordering based on the device's class
* and other properties, including whether the device is serving as a host
* bridge.
*/
int
bhnd_generic_get_probe_order(device_t dev, device_t child)
{
switch (bhnd_get_class(child)) {
case BHND_DEVCLASS_CC:
/* Must be early enough to provide NVRAM access to the
* host bridge */
return (BHND_PROBE_ROOT + BHND_PROBE_ORDER_FIRST);
case BHND_DEVCLASS_CC_B:
/* fall through */
case BHND_DEVCLASS_PMU:
return (BHND_PROBE_BUS + BHND_PROBE_ORDER_EARLY);
case BHND_DEVCLASS_SOC_ROUTER:
return (BHND_PROBE_BUS + BHND_PROBE_ORDER_LATE);
case BHND_DEVCLASS_SOC_BRIDGE:
return (BHND_PROBE_BUS + BHND_PROBE_ORDER_LAST);
case BHND_DEVCLASS_CPU:
return (BHND_PROBE_CPU + BHND_PROBE_ORDER_FIRST);
case BHND_DEVCLASS_RAM:
/* fall through */
case BHND_DEVCLASS_MEMC:
return (BHND_PROBE_CPU + BHND_PROBE_ORDER_EARLY);
case BHND_DEVCLASS_NVRAM:
return (BHND_PROBE_RESOURCE + BHND_PROBE_ORDER_EARLY);
case BHND_DEVCLASS_PCI:
case BHND_DEVCLASS_PCIE:
case BHND_DEVCLASS_PCCARD:
case BHND_DEVCLASS_ENET:
case BHND_DEVCLASS_ENET_MAC:
case BHND_DEVCLASS_ENET_PHY:
case BHND_DEVCLASS_WLAN:
case BHND_DEVCLASS_WLAN_MAC:
case BHND_DEVCLASS_WLAN_PHY:
case BHND_DEVCLASS_EROM:
case BHND_DEVCLASS_OTHER:
case BHND_DEVCLASS_INVALID:
if (bhnd_find_hostb_device(dev) == child)
return (BHND_PROBE_ROOT + BHND_PROBE_ORDER_EARLY);
return (BHND_PROBE_DEFAULT);
default:
return (BHND_PROBE_DEFAULT);
}
}
/**
* Default bhnd(4) bus driver implementation of BHND_BUS_IS_REGION_VALID().
*
* This implementation assumes that port and region numbers are 0-indexed and
* are allocated non-sparsely, using BHND_BUS_GET_PORT_COUNT() and
* BHND_BUS_GET_REGION_COUNT() to determine if @p port and @p region fall
* within the defined range.
*/
static bool
bhnd_generic_is_region_valid(device_t dev, device_t child,
bhnd_port_type type, u_int port, u_int region)
{
if (port >= bhnd_get_port_count(child, type))
return (false);
if (region >= bhnd_get_region_count(child, type, port))
return (false);
return (true);
}
/**
* Default bhnd(4) bus driver implementation of BUS_PRINT_CHILD().
*
* This implementation requests the device's struct resource_list via
* BUS_GET_RESOURCE_LIST.
*/
int
bhnd_generic_print_child(device_t dev, device_t child)
{
struct resource_list *rl;
int retval = 0;
retval += bus_print_child_header(dev, child);
rl = BUS_GET_RESOURCE_LIST(dev, child);
if (rl != NULL) {
retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY,
"%#jx");
}
retval += printf(" at core %u", bhnd_get_core_index(child));
retval += bus_print_child_domain(dev, child);
retval += bus_print_child_footer(dev, child);
return (retval);
}
/**
* Default bhnd(4) bus driver implementation of BUS_PROBE_NOMATCH().
*
* This implementation requests the device's struct resource_list via
* BUS_GET_RESOURCE_LIST.
*/
void
bhnd_generic_probe_nomatch(device_t dev, device_t child)
{
struct resource_list *rl;
const struct bhnd_nomatch *nm;
bool report;
/* Fetch reporting configuration for this device */
report = true;
for (nm = bhnd_nomatch_table; nm->device != BHND_COREID_INVALID; nm++) {
if (nm->vendor != bhnd_get_vendor(child))
continue;
if (nm->device != bhnd_get_device(child))
continue;
report = false;
if (bootverbose && nm->if_verbose)
report = true;
break;
}
if (!report)
return;
/* Print the non-matched device info */
device_printf(dev, "<%s %s>", bhnd_get_vendor_name(child),
bhnd_get_device_name(child));
rl = BUS_GET_RESOURCE_LIST(dev, child);
if (rl != NULL)
resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#jx");
printf(" at core %u (no driver attached)\n",
bhnd_get_core_index(child));
}
/**
* Default implementation of BUS_CHILD_PNPINFO_STR().
*/
static int
bhnd_child_pnpinfo_str(device_t dev, device_t child, char *buf,
size_t buflen)
{
if (device_get_parent(child) != dev) {
return (BUS_CHILD_PNPINFO_STR(device_get_parent(dev), child,
buf, buflen));
}
snprintf(buf, buflen, "vendor=0x%hx device=0x%hx rev=0x%hhx",
bhnd_get_vendor(child), bhnd_get_device(child),
bhnd_get_hwrev(child));
return (0);
}
/**
* Default implementation of BUS_CHILD_LOCATION_STR().
*/
static int
bhnd_child_location_str(device_t dev, device_t child, char *buf,
size_t buflen)
{
bhnd_addr_t addr;
bhnd_size_t size;
if (device_get_parent(child) != dev) {
return (BUS_CHILD_LOCATION_STR(device_get_parent(dev), child,
buf, buflen));
}
if (bhnd_get_region_addr(child, BHND_PORT_DEVICE, 0, 0, &addr, &size)) {
/* No device default port/region */
if (buflen > 0)
*buf = '\0';
return (0);
}
snprintf(buf, buflen, "port0.0=0x%llx", (unsigned long long) addr);
return (0);
}
/**
* Helper function for implementing BUS_SUSPEND_CHILD().
*
* TODO: Power management
*
* If @p child is not a direct child of @p dev, suspension is delegated to
* the @p dev parent.
*/
int
bhnd_generic_suspend_child(device_t dev, device_t child)
{
if (device_get_parent(child) != dev)
BUS_SUSPEND_CHILD(device_get_parent(dev), child);
return bus_generic_suspend_child(dev, child);
}
/**
* Helper function for implementing BUS_RESUME_CHILD().
*
* TODO: Power management
*
* If @p child is not a direct child of @p dev, suspension is delegated to
* the @p dev parent.
*/
int
bhnd_generic_resume_child(device_t dev, device_t child)
{
if (device_get_parent(child) != dev)
BUS_RESUME_CHILD(device_get_parent(dev), child);
return bus_generic_resume_child(dev, child);
}
/*
* Delegate all indirect I/O to the parent device. When inherited by
* non-bridged bus implementations, resources will never be marked as
* indirect, and these methods will never be called.
*/
#define BHND_IO_READ(_type, _name, _method) \
static _type \
bhnd_read_ ## _name (device_t dev, device_t child, \
struct bhnd_resource *r, bus_size_t offset) \
{ \
return (BHND_BUS_READ_ ## _method( \
device_get_parent(dev), child, r, offset)); \
}
#define BHND_IO_WRITE(_type, _name, _method) \
static void \
bhnd_write_ ## _name (device_t dev, device_t child, \
struct bhnd_resource *r, bus_size_t offset, _type value) \
{ \
return (BHND_BUS_WRITE_ ## _method( \
device_get_parent(dev), child, r, offset, \
value)); \
}
#define BHND_IO_MISC(_type, _op, _method) \
static void \
bhnd_ ## _op (device_t dev, device_t child, \
struct bhnd_resource *r, bus_size_t offset, _type datap, \
bus_size_t count) \
{ \
BHND_BUS_ ## _method(device_get_parent(dev), child, r, \
offset, datap, count); \
}
#define BHND_IO_METHODS(_type, _size) \
BHND_IO_READ(_type, _size, _size) \
BHND_IO_WRITE(_type, _size, _size) \
\
BHND_IO_READ(_type, stream_ ## _size, STREAM_ ## _size) \
BHND_IO_WRITE(_type, stream_ ## _size, STREAM_ ## _size) \
\
BHND_IO_MISC(_type*, read_multi_ ## _size, \
READ_MULTI_ ## _size) \
BHND_IO_MISC(_type*, write_multi_ ## _size, \
WRITE_MULTI_ ## _size) \
\
BHND_IO_MISC(_type*, read_multi_stream_ ## _size, \
READ_MULTI_STREAM_ ## _size) \
BHND_IO_MISC(_type*, write_multi_stream_ ## _size, \
WRITE_MULTI_STREAM_ ## _size) \
\
BHND_IO_MISC(_type, set_multi_ ## _size, SET_MULTI_ ## _size) \
BHND_IO_MISC(_type, set_region_ ## _size, SET_REGION_ ## _size) \
\
BHND_IO_MISC(_type*, read_region_ ## _size, \
READ_REGION_ ## _size) \
BHND_IO_MISC(_type*, write_region_ ## _size, \
WRITE_REGION_ ## _size) \
\
BHND_IO_MISC(_type*, read_region_stream_ ## _size, \
READ_REGION_STREAM_ ## _size) \
BHND_IO_MISC(_type*, write_region_stream_ ## _size, \
WRITE_REGION_STREAM_ ## _size) \
BHND_IO_METHODS(uint8_t, 1);
BHND_IO_METHODS(uint16_t, 2);
BHND_IO_METHODS(uint32_t, 4);
static void
bhnd_barrier(device_t dev, device_t child, struct bhnd_resource *r,
bus_size_t offset, bus_size_t length, int flags)
{
BHND_BUS_BARRIER(device_get_parent(dev), child, r, offset, length,
flags);
}
static device_method_t bhnd_methods[] = {
/* Device interface */ \
DEVMETHOD(device_attach, bhnd_generic_attach),
DEVMETHOD(device_detach, bhnd_generic_detach),
DEVMETHOD(device_shutdown, bhnd_generic_shutdown),
DEVMETHOD(device_suspend, bhnd_generic_suspend),
DEVMETHOD(device_resume, bhnd_generic_resume),
/* Bus interface */
DEVMETHOD(bus_probe_nomatch, bhnd_generic_probe_nomatch),
DEVMETHOD(bus_print_child, bhnd_generic_print_child),
DEVMETHOD(bus_child_pnpinfo_str, bhnd_child_pnpinfo_str),
DEVMETHOD(bus_child_location_str, bhnd_child_location_str),
DEVMETHOD(bus_suspend_child, bhnd_generic_suspend_child),
DEVMETHOD(bus_resume_child, bhnd_generic_resume_child),
DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
DEVMETHOD(bus_delete_resource, bus_generic_rl_delete_resource),
DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_config_intr, bus_generic_config_intr),
DEVMETHOD(bus_bind_intr, bus_generic_bind_intr),
DEVMETHOD(bus_describe_intr, bus_generic_describe_intr),
DEVMETHOD(bus_get_dma_tag, bus_generic_get_dma_tag),
/* BHND interface */
DEVMETHOD(bhnd_bus_get_chipid, bhnd_bus_generic_get_chipid),
DEVMETHOD(bhnd_bus_get_probe_order, bhnd_generic_get_probe_order),
DEVMETHOD(bhnd_bus_is_region_valid, bhnd_generic_is_region_valid),
DEVMETHOD(bhnd_bus_is_hw_disabled, bhnd_bus_generic_is_hw_disabled),
DEVMETHOD(bhnd_bus_get_nvram_var, bhnd_bus_generic_get_nvram_var),
/* BHND interface (bus I/O) */
DEVMETHOD(bhnd_bus_read_1, bhnd_read_1),
DEVMETHOD(bhnd_bus_read_2, bhnd_read_2),
DEVMETHOD(bhnd_bus_read_4, bhnd_read_4),
DEVMETHOD(bhnd_bus_write_1, bhnd_write_1),
DEVMETHOD(bhnd_bus_write_2, bhnd_write_2),
DEVMETHOD(bhnd_bus_write_4, bhnd_write_4),
DEVMETHOD(bhnd_bus_read_stream_1, bhnd_read_stream_1),
DEVMETHOD(bhnd_bus_read_stream_2, bhnd_read_stream_2),
DEVMETHOD(bhnd_bus_read_stream_4, bhnd_read_stream_4),
DEVMETHOD(bhnd_bus_write_stream_1, bhnd_write_stream_1),
DEVMETHOD(bhnd_bus_write_stream_2, bhnd_write_stream_2),
DEVMETHOD(bhnd_bus_write_stream_4, bhnd_write_stream_4),
DEVMETHOD(bhnd_bus_read_multi_1, bhnd_read_multi_1),
DEVMETHOD(bhnd_bus_read_multi_2, bhnd_read_multi_2),
DEVMETHOD(bhnd_bus_read_multi_4, bhnd_read_multi_4),
DEVMETHOD(bhnd_bus_write_multi_1, bhnd_write_multi_1),
DEVMETHOD(bhnd_bus_write_multi_2, bhnd_write_multi_2),
DEVMETHOD(bhnd_bus_write_multi_4, bhnd_write_multi_4),
DEVMETHOD(bhnd_bus_read_multi_stream_1, bhnd_read_multi_stream_1),
DEVMETHOD(bhnd_bus_read_multi_stream_2, bhnd_read_multi_stream_2),
DEVMETHOD(bhnd_bus_read_multi_stream_4, bhnd_read_multi_stream_4),
DEVMETHOD(bhnd_bus_write_multi_stream_1,bhnd_write_multi_stream_1),
DEVMETHOD(bhnd_bus_write_multi_stream_2,bhnd_write_multi_stream_2),
DEVMETHOD(bhnd_bus_write_multi_stream_4,bhnd_write_multi_stream_4),
DEVMETHOD(bhnd_bus_set_multi_1, bhnd_set_multi_1),
DEVMETHOD(bhnd_bus_set_multi_2, bhnd_set_multi_2),
DEVMETHOD(bhnd_bus_set_multi_4, bhnd_set_multi_4),
DEVMETHOD(bhnd_bus_set_region_1, bhnd_set_region_1),
DEVMETHOD(bhnd_bus_set_region_2, bhnd_set_region_2),
DEVMETHOD(bhnd_bus_set_region_4, bhnd_set_region_4),
DEVMETHOD(bhnd_bus_read_region_1, bhnd_read_region_1),
DEVMETHOD(bhnd_bus_read_region_2, bhnd_read_region_2),
DEVMETHOD(bhnd_bus_read_region_4, bhnd_read_region_4),
DEVMETHOD(bhnd_bus_write_region_1, bhnd_write_region_1),
DEVMETHOD(bhnd_bus_write_region_2, bhnd_write_region_2),
DEVMETHOD(bhnd_bus_write_region_4, bhnd_write_region_4),
DEVMETHOD(bhnd_bus_read_region_stream_1,bhnd_read_region_stream_1),
DEVMETHOD(bhnd_bus_read_region_stream_2,bhnd_read_region_stream_2),
DEVMETHOD(bhnd_bus_read_region_stream_4,bhnd_read_region_stream_4),
DEVMETHOD(bhnd_bus_write_region_stream_1, bhnd_write_region_stream_1),
DEVMETHOD(bhnd_bus_write_region_stream_2, bhnd_write_region_stream_2),
DEVMETHOD(bhnd_bus_write_region_stream_4, bhnd_write_region_stream_4),
DEVMETHOD(bhnd_bus_barrier, bhnd_barrier),
DEVMETHOD_END
};
devclass_t bhnd_devclass; /**< bhnd bus. */
devclass_t bhnd_hostb_devclass; /**< bhnd bus host bridge. */
devclass_t bhnd_nvram_devclass; /**< bhnd NVRAM device */
DEFINE_CLASS_0(bhnd, bhnd_driver, bhnd_methods, sizeof(struct bhnd_softc));
MODULE_VERSION(bhnd, 1);
