Instead of requiring drivers to be explicit about their device memory
mapping requirements, move this decision into the fdt layer. This
introduces a new MD function, fdtbus_bus_tag_create, which is responsible
for returning per-node bus_space handles.

- Define a device call for PCI bus instances to fetch a direct child's
device handle given the device's device/function #s (extracted from
a pcitag_t). Use it to associate the handle with the child device
at config_found() time.
- Implement this device call for ACPI and OpenFirmware.
- Enable the OpenFirmware variant for evbarm FDT, macppc, ofppc, sparc64.
- Obsolete acpi_device_register(); it is no longer needed.
- Obsolete setting the OpenFirmware handle in PCI devices in the
sparc64 device_register(); it is no longer needed.

branches: 1.7.4; 1.7.6;
Move evbarm/fdt/fdt_memory.[ch] to sys/dev/fdt and simplify the api and
some operations. This allows other architectures to use it.

branches: 1.6.6;
Add dma-ranges support.

branches: 1.5.6;
build fdt_memory.c

branches: 1.4.2;
Add initial support for ARMv8 (AARCH64) (by nisimura@ and ryo@)

- sys/arch/evbarm64 is gone and integrated into sys/arch/evbarm. (by skrll@)
- add support fdt. evbarm/conf/GENERIC64 fdt (bcm2837,sunxi,tegra) based generic 64bit kernel config. (by skrll@, jmcneill@)

move "defparam opt_machdep.h BOOT_ARGS" to files.evbarm from various places

branches: 1.2.2; 1.2.4;
Make opt_fdt.h available for all evbarm kernels.

branches: 1.1.6;
Rename tegra_machdep.c to fdt_machdep.c now that it no longer has any
Tegra-specific code in it.

- Define a device call for PCI bus instances to fetch a direct child's
device handle given the device's device/function #s (extracted from
a pcitag_t). Use it to associate the handle with the child device
at config_found() time.
- Implement this device call for ACPI and OpenFirmware.
- Enable the OpenFirmware variant for evbarm FDT, macppc, ofppc, sparc64.
- Obsolete acpi_device_register(); it is no longer needed.
- Obsolete setting the OpenFirmware handle in PCI devices in the
sparc64 device_register(); it is no longer needed.

branches: 1.7.4;
Move evbarm/fdt/fdt_memory.[ch] to sys/dev/fdt and simplify the api and
some operations. This allows other architectures to use it.

branches: 1.6.6;
Add dma-ranges support.

branches: 1.5.6;
build fdt_memory.c

branches: 1.4.2;
Add initial support for ARMv8 (AARCH64) (by nisimura@ and ryo@)

- sys/arch/evbarm64 is gone and integrated into sys/arch/evbarm. (by skrll@)
- add support fdt. evbarm/conf/GENERIC64 fdt (bcm2837,sunxi,tegra) based generic 64bit kernel config. (by skrll@, jmcneill@)

move "defparam opt_machdep.h BOOT_ARGS" to files.evbarm from various places

branches: 1.2.2; 1.2.4;
Make opt_fdt.h available for all evbarm kernels.

branches: 1.1.6;
Rename tegra_machdep.c to fdt_machdep.c now that it no longer has any
Tegra-specific code in it.

Move evbarm/fdt/fdt_memory.[ch] to sys/dev/fdt and simplify the api and
some operations. This allows other architectures to use it.

Add dma-ranges support.

branches: 1.5.6;
build fdt_memory.c

branches: 1.4.2;
Add initial support for ARMv8 (AARCH64) (by nisimura@ and ryo@)

- sys/arch/evbarm64 is gone and integrated into sys/arch/evbarm. (by skrll@)
- add support fdt. evbarm/conf/GENERIC64 fdt (bcm2837,sunxi,tegra) based generic 64bit kernel config. (by skrll@, jmcneill@)

move "defparam opt_machdep.h BOOT_ARGS" to files.evbarm from various places

branches: 1.2.2; 1.2.4;
Make opt_fdt.h available for all evbarm kernels.

branches: 1.1.6;
Rename tegra_machdep.c to fdt_machdep.c now that it no longer has any
Tegra-specific code in it.

Add dma-ranges support.

build fdt_memory.c

branches: 1.4.2;
Add initial support for ARMv8 (AARCH64) (by nisimura@ and ryo@)

- sys/arch/evbarm64 is gone and integrated into sys/arch/evbarm. (by skrll@)
- add support fdt. evbarm/conf/GENERIC64 fdt (bcm2837,sunxi,tegra) based generic 64bit kernel config. (by skrll@, jmcneill@)

move "defparam opt_machdep.h BOOT_ARGS" to files.evbarm from various places

branches: 1.2.2; 1.2.4;
Make opt_fdt.h available for all evbarm kernels.

branches: 1.1.6;
Rename tegra_machdep.c to fdt_machdep.c now that it no longer has any
Tegra-specific code in it.

build fdt_memory.c

Add initial support for ARMv8 (AARCH64) (by nisimura@ and ryo@)

- sys/arch/evbarm64 is gone and integrated into sys/arch/evbarm. (by skrll@)
- add support fdt. evbarm/conf/GENERIC64 fdt (bcm2837,sunxi,tegra) based generic 64bit kernel config. (by skrll@, jmcneill@)

move "defparam opt_machdep.h BOOT_ARGS" to files.evbarm from various places

branches: 1.2.2; 1.2.4;
Make opt_fdt.h available for all evbarm kernels.

branches: 1.1.6;
Rename tegra_machdep.c to fdt_machdep.c now that it no longer has any
Tegra-specific code in it.