Commit Graph

33 Commits

Author SHA1 Message Date
Landon J. Fuller
be9a13138e bhnd(4): Use the new BHND_CAP_BP64 capability flag to exclude DMA
translations unsupported by the backplane.
2018-03-29 19:48:50 +00:00
Landon J. Fuller
566ca880a1 bhnd(4): Include board_devid in the bhnd_board_info structure, and populate
the expected default board_vendor value on MIPS SoCs.

This is required by bwn(4) to differentiate between single-band and
dual-band device variants that otherwise share a common chip ID.

Approved by:	adrian (mentor, implicit)
Sponsored by:	The FreeBSD Foundation
2017-12-14 01:58:05 +00:00
Landon J. Fuller
4e96bf3a37 bhnd(4): extend the PMU APIs to support bwn(4)
The bwn(4) driver requires a number of extensions to the bhnd(4) PMU
interface to support external configuration of PLLs, LDOs, and other
parameters that require chipset or PHY-specific workarounds.

These changes add support for:

- Writing raw voltage register values to PHY-specific LDO regulator
  registers (required by LP-PHY).
- Enabling/disabling PHY-specific LDOs (required by LP-PHY)
- Writing to arbitrary PMU chipctrl registers (required for common PHY PLL
  reset support).
- Requesting chipset/PLL-specific spurious signal avoidance modes.
- Querying clock frequency and latency.

Additionally, rather than updating legacy PWRCTL support to conform to the
new PMU interface:

- PWRCTL API is now provided by a bhnd_pwrctl_if.m interface.
- Since PWRCTL is only found in older SSB-based chipsets, translation from
  bhnd(4) bus APIs to corresponding PWRCTL operations is now handled
  entirely within the siba(4) driver.
- The PWRCTL-specific host bridge clock gating APIs in bhnd_bus_if.m have
  been lifted out into a standalone bhnd_pwrctl_hostb_if.m interface.

Approved by:	adrian (mentor, implicit)
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D12664
2017-11-22 20:27:46 +00:00
Landon J. Fuller
9ed453245b bhnd(4): Add support for querying DMA address translation parameters
BHND Wi-Fi chipsets and SoCs share a common DMA engine, operating within
backplane address space. To support host DMA on Wi-Fi chipsets, the bridge
core maps host address space onto the backplane; any host addresses must
be translated to their corresponding backplane address.


- Defines a new bhnd_get_dma_translation(9) API to support querying DMA
  address translation parameters from the bhnd(4) bus.
- Extends bhndb(4) to provide DMA translation descriptors from a DMA
  address translation table defined in the host bridge-specific
  bhndb_hwcfg.
- Defines bhndb(4) DMA address translation tables for all supported host
  bridge cores.
- Extends mips/broadcom's bhnd_nexus driver to return an identity (no-op)
  DMA translation descriptor; no translation is required when addressing
  the SoC backplane.

Approved by:	adrian (mentor)
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D12582
2017-11-21 23:25:22 +00:00
Landon J. Fuller
caeff9a3c2 bhnd(4): implement MIPS and PCI(e) interrupt support
On BHND MIPS SoCs, this replaces the use of hard-coded MIPS IRQ#s in the
common bhnd(4) core drivers; we now register an INTRNG child PIC that
handles routing of backplane interrupt vectors via the MIPS core.

On BHND PCI devices, backplane interrupt vectors are now routed to the
PCI/PCIe host bridge core when bus_setup_intr() is called, where they are
dispatched by the PCI core via a host interrupt (e.g. INTx/MSI).

The bhndb(4) bridge driver tracks registered interrupt handlers for the
bridged bhnd(4) devices and manages backplane interrupt routing, while
delegating actual bus interrupt setup/teardown to the parent bus on behalf
of the bridged cores.

Approved by:	adrian (mentor, implicit)
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D12518
2017-11-21 23:15:20 +00:00
Landon J. Fuller
89294a783a bhnd: Add support for supplying bus I/O callbacks when initializing an EROM
parser.

This allows us to use the EROM parser API in cases where the standard bus
space I/O APIs are unsuitable. In particular, this will allow us to parse
the device enumeration table directly from bhndb(4) drivers, prior to
full attach and configuration of the bridge.

Approved by:	adrian (mentor)
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D12510
2017-09-27 19:48:34 +00:00
Landon J. Fuller
8e35bf8319 bhnd: Implement bhnd(4) platform device registration.
Add bhnd(4) API for explicitly registering BHND platform devices (ChipCommon,
PMU, NVRAM, etc) with the bus, rather than walking the newbus hierarchy to
discover platform devices. These devices are now also refcounted; attempting
to deregister an actively used platform device will return EBUSY.

This resolves a lock ordering incompatibility with bwn(4)'s firmware loading
threads; previously it was necessary to acquire Giant to protect newbus access
when locating and querying the NVRAM device.

Approved by:	adrian (mentor)
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D12392
2017-09-27 19:44:23 +00:00
Michael Zhilin
97721228b8 [mips] [bhnd] Support of old PMU for BMIPS and siba SoC
- Fix typo of PLL Type 4
 - Don't panic of frequency getters

Submitted by:	Hiroki Mori <yamori813@yahoo.co.jp>
Differential Revision:	https://reviews.freebsd.org/D10967
2017-05-28 12:05:16 +00:00
Landon J. Fuller
eb23aa8008 Add support for dumping bcma/siba EROM tables to the console via a new
BHND_EROM_DUMP() method.

Dump the EROM tables to the coneole on mips/broadcom devices if bootverbose
is enabled; this functionality is primarily useful when debugging SoC EROM
parsing and device matching issues during early boot.

Reviewed by:	mizhka
Approved by:	adrian (mentor)
Sponsored by:	Plausible Labs
Differential Revision:	https://reviews.freebsd.org/D10122
2017-04-24 18:35:25 +00:00
Landon J. Fuller
591e79bc76 [mips/broadcom]: Early boot NVRAM support
Add support for early boot access to NVRAM variables, using a new
bhnd_nvram_data_getvar_direct() API to support zero-allocation direct
reading of NVRAM variables from a bhnd_nvram_io instance backed by the
CFE NVRAM device.

Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D9913
2017-03-23 19:29:12 +00:00
Landon J. Fuller
b86f80276b Add MIPS boot support for the BCM4706/Northstar ChipCommon core.
This adds support for matching against a core lookup table when performing
early boot core lookup, and includes the BCM4706/Northstar-specific
ChipCommon core ID in the set of supported ChipCommon cores.

Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D10033
2017-03-17 22:02:02 +00:00
Ruslan Bukin
c214a270f5 Allow setting access-width for UART registers.
This is required for FDT's standard "reg-io-width" property
(similar to "reg-shift" property) found in many DTS files.

This fixes operation on Altera Arria 10 SOC Development Kit,
where standard ns8250 uart allows 4-byte access only.

Reviewed by:	kan, marcel
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D9785
2017-02-27 20:08:42 +00:00
Landon J. Fuller
8f3bba2d35 [mips/broadcom] Move MIPS-specific bhnd(4) nexus drivers to
sys/mips/broadcom, and add MIPS/BCM4706-specific workaround to
bhnd_nexus_is_hw_disabled() -- the BCM4706 low-cost package leaves
secondary GMAC cores floating.

Reviewed by:	mizhka
Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D9499
2017-02-13 19:58:55 +00:00
Landon J. Fuller
58efe68622 bhnd(4): minor style(9) fixes
Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D8755
2016-12-19 20:07:58 +00:00
Landon J. Fuller
77cb4d3e50 bhnd(4): Unify NVRAM/SPROM parsing, implement compact SPROM layout encoding.
- Defined an abstract NVRAM I/O API (bhnd_nvram_io), decoupling NVRAM/SPROM
  parsing from the actual underlying NVRAM data provider (e.g. CFE firmware
  devices).
- Defined an abstract NVRAM data API (bhnd_nvram_data), decoupling
  higher-level NVRAM operations (indexed lookup, data conversion, etc) from
  the underlying NVRAM file format parsing/serialization.
- Implemented a new high-level bhnd_nvram_store API, providing indexed
  variable lookup, pending write tracking, etc on top of an arbitrary
  bhnd_nvram_data instance.
- Migrated all bhnd(4) NVRAM device drivers to the common bhnd_nvram_store
  API.
- Implemented a common bhnd_nvram_val API for parsing/encoding NVRAM
  variable values, including applying format-specific behavior when
  converting to/from the NVRAM string representations.
- Dropped the now unnecessary bhnd_nvram driver, and moved the
  broadcom/mips-specific CFE NVRAM driver out into sys/mips/broadcom.
- Implemented a new nvram_map file format:
        - Variable definitions are now defined separately from the SPROM
          layout. This will also allow us to define CIS tuple NVRAM
          mappings referencing the common NVRAM variable definitions.
        - Variables can now be defined within arbitrary named groups.
        - Textual descriptions and help information can be defined inline
          for both variables and variable groups.
        - Implemented a new, compact encoding of SPROM image layout
          offsets.
- Source-level (but not build system) support for building the NVRAM file
  format APIs (bhnd_nvram_io, bhnd_nvram_data, bhnd_nvram_store) as a
  userspace library.

The new compact SPROM image layout encoding is loosely modeled on Apple
dyld compressed LINKEDIT symbol binding opcodes; it provides a compact
state-machine encoding of the mapping between NVRAM variables and the SPROM
image offset, mask, and shift instructions necessary to decode or encode
the SPROM variable data.

The compact encoding reduces the size of the generated SPROM layout data
from roughly 60KB to 3KB. The sequential nature SPROM layout opcode tables
also simplify iteration of the SPROM variables, as it's no longer
neccessary to iterate the full NVRAM variable definition table, but
instead simply scan the SPROM revision's layout opcode table.

Approved by:    adrian (mentor)
Differential Revision:  https://reviews.freebsd.org/D8645
2016-11-26 23:22:32 +00:00
Ruslan Bukin
91f70e00c4 Move intrng includes to the main MIPS includes file.
Sponsored by:	DARPA, AFRL
2016-11-19 17:01:06 +00:00
Landon J. Fuller
f75615f26f Split bcm_mipscore.c into bcm_bmips (BMIPS32/BMIPS3300) and bcm_mips74k
drivers.

The BMIPS32/BMIPS3300 cores use a register layout distinct from the MIPS74K
core, and are only found on siba(4) devices.

Reviewed by:	mizhka
Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D7791
2016-09-18 21:28:09 +00:00
Michael Zhilin
29d492ace1 [BHND/USB] Port of EHCI/OHCI support from ZRouter
This patch adds driver implementation for BHND USB core. Driver has been
imported from ZRouter project with small adaptions for FreeBSD 11.

Also it's enabled for BroadCom MIPS74k boards by default. It's fully tested
on Asus boards (RT-N16: external USB, RT-N53: USB bus between SoC and WiFi
chips).

Reviewed by:    adrian (mentor), ray
Approved by:	adrian (mentor)
Obtained from:	ZRouter
Differential Revision:  https://reviews.freebsd.org/D7781
2016-09-05 16:06:52 +00:00
Landon J. Fuller
111d7cb2e3 Migrate bhndb(4) to the new bhnd_erom API.
Adds support for probing and initializing bhndb(4) bridge state using
the bhnd_erom API, ensuring that full bridge configuration is available
*prior* to actually attaching and enumerating the bhnd(4) child device,
allowing us to safely allocate bus-level agent/device resources during
bhnd(4) bus enumeration.

- Add a bhnd_erom_probe() method usable by bhndb(4). This is an analogue
  to the existing bhnd_erom_probe_static() method, and allows the bhndb
  bridge to discover the best available erom parser class prior to newbus
  probing of its children.
- Add support for supplying identification hints when probing erom
  devices. This is required on early EXTIF-only chipsets, where chip
  identification registers are not available.
- Migrate bhndb over to the new bhnd_erom API, using bhnd_core_info
  records rather than bridged bhnd(4) device_t references to determine
  the bridged chipsets' capability/bridge configuration.
- The bhndb parent (e.g. if_bwn) is now required to supply a hardware
  priority table to the bridge. The default table is currently sufficient
  for our supported devices.
- Drop the two-pass attach approach we used for compatibility with bhndb(4) in
  the bhnd(4) bus drivers, and instead perform bus enumeration immediately,
  and allocate bridged per-child bus-level resources during that enumeration.

Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D7768
2016-09-04 00:58:19 +00:00
Landon J. Fuller
664a749708 Implement a generic bhnd(4) device enumeration table API.
This defines a new bhnd_erom_if API, providing a common interface to device
enumeration on siba(4) and bcma(4) devices, for use both in the bhndb bridge
and SoC early boot contexts, and migrates mips/broadcom over to the new API.

This also replaces the previous adhoc device enumeration support implemented
for mips/broadcom.

Migration of bhndb to the new API will be implemented in a follow-up commit.


- Defined new bhnd_erom_if interface for bhnd(4) device enumeration, along
  with bcma(4) and siba(4)-specific implementations.
- Fixed a minor bug in bhndb that logged an error when we attempted to map the
  full siba(4) bus space (18000000-17FFFFFF) in the siba EROM parser.
- Reverted use of the resource's start address as the ChipCommon enum_addr in
  bhnd_read_chipid(). When called from bhndb, this address is found within the
  host address space, resulting in an invalid bridged enum_addr.
- Added support for falling back on standard bus_activate_resource() in
  bhnd_bus_generic_activate_resource(), enabling allocation of the bhnd_erom's
  bhnd_resource directly from a nexus-attached bhnd(4) device.
- Removed BHND_BUS_GET_CORE_TABLE(); it has been replaced by the erom API.
- Added support for statically initializing bhnd_erom instances, for use prior
  to malloc availability. The statically allocated buffer size is verified both
  at runtime, and via a compile-time assertion (see BHND_EROM_STATIC_BYTES).
- bhnd_erom classes are registered within a module via a linker set, allowing
  mips/broadcom to probe available EROM parser instances without creating a
  strong reference to bcma/siba-specific symbols.
- Migrated mips/broadcom to bhnd_erom_if, replacing the previous MIPS-specific
  device enumeration implementation.

Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D7748
2016-09-03 23:57:17 +00:00
Landon J. Fuller
eb175e8bfb [mips/broadcom]: Replace static frequency table with generic PMU clock
handling.


- Extended PWRCTL/PMU APIs to support querying clock frequency during very
  early boot, prior to bus attach.
- Implement generic PMU-based calculation of UART rclk values.
- Replaced use of static frequency tables (bcm_socinfo) with
  runtime-determined values.

Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D7552
2016-08-27 00:06:20 +00:00
Landon J. Fuller
f90f4b6532 bhnd(4): Initial PMU/PWRCTL power and clock management support.
- Added bhnd_pmu driver implementations for PMU and PWRCTL chipsets,
  derived from Broadcom's ISC-licensed HND code.
- Added bhnd bus-level support for routing per-core clock and resource
  power requests to the PMU device.
- Lift ChipCommon support out into the bhnd module, dropping
  bhnd_chipc.

Reviewed by:	mizhka
Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D7492
2016-08-27 00:03:02 +00:00
Landon J. Fuller
cb4abe62ba [mips/broadcom] Generic platform_reset() support.
This adds support for performing platform_reset() on all supported
devices, using early boot enumeration of chipc capabilities and
available cores.


- Added Broadcom-specific MIPS CP0 register definitions used by
  BCM4785-specific reset handling.
- Added a bcm_platform structure for tracking chipc/pmu/cfe platform
  data.
- Extended the BCMA EROM API to support early boot lookup of core info
  (including port/region mappings).
- Extended platform_reset() to support PMU, PMU+AOB, and non-PMU
  devices.

Reviewed by:	mizhka
Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D7539
2016-08-26 20:16:02 +00:00
Landon J. Fuller
e15461c7e9 mips/broadcom: Implement CFE-based EARLY_PRINTF support.
This adds support for EARLY_PRINTF via the CFE console; the aim is to
provide a fix for the otherwise cyclic dependency between PMU discovery
and console printf/DELAY:

- We need to parse the bhnd(4) core table to determine the address (and
  type) of the PMU/PLL registers and calculate the CPU clock frequency.
- The core table parsing code will emit a printf() if a parse error is
  hit.
- Safely calling printf() without EARLY_PRINTF requires a working
  DELAY+cninit, which means we need the PMU.

Errors in core table parsing shouldn't happen, but lack of EARLY_PRINTF
makes debugging more difficult.

Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D7498
2016-08-17 20:24:14 +00:00
Landon J. Fuller
6ed73911fe [mips/broadcom] Fetch UART console configuration from CFE.
Relying on the boot loader console configuration allows us to use a
common set of device hints for all SENTRY5 devices.

Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D7376
2016-08-01 16:29:32 +00:00
Landon J. Fuller
ff29b85a34 Replace mips/sentry5 with mips/broadcom
The delta between SENTRY5 and BCM was already small due to BCM being
derived from SENTRY5; re-integrating the two avoids the maintenance
overhead of keeping them both in sync with bhnd(4) changes.


- Re-integrate minor SENTRY5 deltas in bcm_machdep.c
- Modify uart_cpu_chipc to allow specifying UART debug/console flags via
  kenv and device hints.
- Switch SENTRY5 to std.broadcom
- Enabled CFI flash support for SENTRY5

Reviewed by:	Michael Zhilin <mizkha@gmail.com> (Broadcom MIPS support)
Approved by:	re (gjb), adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D6897
2016-06-25 04:34:54 +00:00
Landon J. Fuller
0c91e8927d bhnd(4): Perform explicit chipc child enumeration.
Replaces use of DEVICE_IDENTIFY with explicit enumeration of chipc
child devices using the chipc capability structure.

This is a precursor to PMU support, which requires more complex resource
assignment handling than achievable with the static device name-based
hints table.

Reviewed by:	Michael Zhilin <mizkha@gmail.com> (Broadcom MIPS support)
Approved by:	re (gjb), adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D6896
2016-06-25 04:33:00 +00:00
Landon J. Fuller
d342b2e9da bhnd(4): Fix mips/broadcom core matching and bus pass order.
Changes:

- Fixed incorrect MIPS74k vendor ID in the bhnd core descriptor tables
- Fixed MIPS core driver's matching against MIPS/MIPS33 cores.
- Improved MIPS3302 core description.
- Enabled BUS_PASS_BUS on the bhnd nexus drivers to allow early probing
  of the MIPS core.
- Enabled BUS_PASS_CPU on the MIPS core driver to ensure correct attach
  order.
- Disabled matching of the MIPS core driver on non-SoC devices.

Reviewed by:	Michael Zhilin <mizhka@gmail.com>
Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D6735
2016-06-08 21:38:51 +00:00
Landon J. Fuller
b0b9c8546b bhnd(4): Add a vendor parameter to BHND_DEVICE(), replacing vendor-specific
BHND_*_DEVICE macros.

Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D6736
2016-06-08 21:31:33 +00:00
Landon J. Fuller
7ba7852fd7 Switch mips/sentry5 to bhnd(4), and unify with mips/broadcom
Now that bhnd(4) provides feature parity with the previous siba/mips
implementation, we can switch sentry5 over and begin lifting common
support code out for use across bhnd(4) embedded targets.

Changes:

- Fixed enumeration of siba(4) per-core address maps, required for
  discovery of memory mapped chipc flash region on siba(4) devices.
- Simplified bhnd kernel configuration (dropped 'bhndbus' option).
- Replaced files.broadcom's direct file references with their
  corresponding standard kernel options.
- Lifted out common bcma/siba nexus support, inheriting from the new
  generic bhnd_nexus driver.
- Dropped now-unused sentry5 siba code.
- Re-integrated BCM into the universe build now that it actually compiles.

Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D6712
2016-06-04 19:53:47 +00:00
Landon J. Fuller
e129bcd6bc bhnd(4): Add support for chipc-attached flash
This adds support for serial (via SPI) and parallel (via CFI) flash
as found on BCM47xx/BCM53xx SoCs.

Submitted by:   Michael Zhilin <mizhka@gmail.com>
Approved by:    adrian (mentor)
Differential Revision:  https://reviews.freebsd.org/D6250
2016-06-04 19:39:05 +00:00
Adrian Chadd
041b2de9cc [mips/broadcom] Add initial support for Broadcom MIPS processor
Relies on BHND(4) driver.

There files contains machine-dependent code for Broadcom MIPS processor and
provide UART driver.

This is a work in progress; it and the current bhnd code is enough to boot
on the ASUS RT-N16 and RT-N53 platforms.

Submitted by:	Michael Zhilin <mizhka@gmail.com>
Differential Revision:	https://reviews.freebsd.org/D6251
2016-05-17 00:00:01 +00:00
Adrian Chadd
9c60232add [mips/broadcom] Add initial code for interrupts on the Broadcom MIPS processor
Broadcom MIPS processor doesn't reset TI flag if additional manipulation
is done.

Thanks to @sobomax!
2016-05-16 23:54:28 +00:00