Add support for fetching SPROM data from OTP on chipsets with an
IPX OTP controller (including the BCM43225).
This integrates the NVRAM data source into the chipc_caps capability
structure, and adds a sprom_offset field that can be used with OTP
to locate the SPROM image data (found within the general use
region, H/W subregion).
This also removes one of two duplicate parse error messages reported by
both the bhnd_sprom driver and the underlying SPROM parsing API.
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D6729
This patchset adds support to bhnd_chipc for sharing SYS_RES_MEMORY
resources with its children, allowing us to hang devices off of
bhnd_chipc that rely on access to a subset of the device register space
that bhnd_chipc itself must also allocate.
We could avoid most of this heavy lifting if RF_SHAREABLE+SYS_RES_MEMORY
wasn't limited to use with allocations at the same size/offset.
As a work-around, I implemented something similar to vga_pci.c, which
implements similar reference counting of of PCI BAR resources for its
children.
With these changes, chipc will use reference counting of SYS_RES_MEMORY
allocation/activation requests, to decide when to allocate/activate/
deactivate/release resources from the parent bhnd(4) bus.
The requesting child device is allocated a new resource from chipc's
rman, pointing to (possibly a subregion of) the refcounted bhnd resources
allocated by chipc.
Other resource types are just passed directly to the parent bhnd bus;
RF_SHAREABLE works just fine with IRQs.
I also lifted the SPROM device code out into a common driver, since this
now allows me to hang simple subclasses off of a common driver off of both
bhndb_pci and bhnd_chipc.
Tested:
* (landonf) Tested against BCM4331 and BCM4312, confirmed that SPROM still
attaches and can be queried.
Submitted by: Landon Fuller <landonf@landonf.org>
Reviewed by: mizkha@gmail.com
Differential Revision: https://reviews.freebsd.org/D6471
This adds bhnd-compatible implementations of bus_(read|write|set)_(1|2|4) APIs,
and upgrades the SPROM parsing code to use bhnd_bus_read_region_stream_2().
This a precursor to bridge support for resource adjustment and the new
ChipCommon bus support.
Tested:
* Tested against BCM4331
* Kernel build verified via tinderbox.
Submitted by: Landon Fuller <landonf@landonf.org>
Differential Revision: https://reviews.freebsd.org/D6469
This adds support for the NVRAM handling and the basic SPROM
hardware used on siba(4) and bcma(4) devices, including:
* SPROM directly attached to the PCI core, accessible via PCI configuration
space.
* SPROM attached to later ChipCommon cores.
* SPROM variables vended from the parent SoC bus (e.g. via a directly-attached
flash device).
Additional improvements to the NVRAM/SPROM interface will
be required, but this changeset stands alone as working
checkpoint.
Submitted by: Landon Fuller <landonf@landonf.org>
Reviewed by: Michael Zhilin <mizkha@gmail.com> (Broadcom MIPS support)
Differential Revision: https://reviews.freebsd.org/D6196
