freebsd-dev/sys/dev/bhnd/bhnd_match.h
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

298 lines
9.4 KiB
C

/*-
* Copyright (c) 2015-2016 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.
*
* $FreeBSD$
*/
#ifndef _BHND_BHND_MATCH_H_
#define _BHND_BHND_MATCH_H_
#include "bhnd_types.h"
/**
* A hardware revision match descriptor.
*/
struct bhnd_hwrev_match {
uint16_t start; /**< first revision, or BHND_HWREV_INVALID
to match on any revision. */
uint16_t end; /**< last revision, or BHND_HWREV_INVALID
to match on any revision. */
};
/* Copy match field @p _name from @p _src */
#define _BHND_COPY_MATCH_FIELD(_src, _name) \
.m.match._name = (_src)->m.match._name, \
._name = (_src)->_name
/* Set match field @p _name with @p _value */
#define _BHND_SET_MATCH_FIELD(_name, _value) \
.m.match._name = 1, ._name = _value
/**
* Wildcard hardware revision match descriptor.
*/
#define BHND_HWREV_ANY { BHND_HWREV_INVALID, BHND_HWREV_INVALID }
#define BHND_HWREV_IS_ANY(_m) \
((_m)->start == BHND_HWREV_INVALID && (_m)->end == BHND_HWREV_INVALID)
/**
* Hardware revision match descriptor for an inclusive range.
*
* @param _start The first applicable hardware revision.
* @param _end The last applicable hardware revision, or BHND_HWREV_INVALID
* to match on any revision.
*/
#define BHND_HWREV_RANGE(_start, _end) { _start, _end }
/**
* Hardware revision match descriptor for a single revision.
*
* @param _hwrev The hardware revision to match on.
*/
#define BHND_HWREV_EQ(_hwrev) BHND_HWREV_RANGE(_hwrev, _hwrev)
/**
* Hardware revision match descriptor for any revision equal to or greater
* than @p _start.
*
* @param _start The first hardware revision to match on.
*/
#define BHND_HWREV_GTE(_start) BHND_HWREV_RANGE(_start, BHND_HWREV_INVALID)
/**
* Hardware revision match descriptor for any revision equal to or less
* than @p _end.
*
* @param _end The last hardware revision to match on.
*/
#define BHND_HWREV_LTE(_end) BHND_HWREV_RANGE(0, _end)
/**
* A bhnd(4) core match descriptor.
*/
struct bhnd_core_match {
/** Select fields to be matched */
union {
uint8_t match_flags;
struct {
uint8_t
core_vendor:1,
core_id:1,
core_rev:1,
core_class:1,
core_idx:1,
core_unit:1,
flags_unused:2;
} match;
} m;
uint16_t core_vendor; /**< required JEP106 device vendor */
uint16_t core_id; /**< required core ID */
struct bhnd_hwrev_match core_rev; /**< matching core revisions. */
bhnd_devclass_t core_class; /**< required bhnd class */
u_int core_idx; /**< required core index */
int core_unit; /**< required core unit */
};
#define _BHND_CORE_MATCH_COPY(_src) \
_BHND_COPY_MATCH_FIELD(_src, core_vendor), \
_BHND_COPY_MATCH_FIELD(_src, core_id), \
_BHND_COPY_MATCH_FIELD(_src, core_rev), \
_BHND_COPY_MATCH_FIELD(_src, core_class), \
_BHND_COPY_MATCH_FIELD(_src, core_idx), \
_BHND_COPY_MATCH_FIELD(_src, core_unit) \
#define BHND_MATCH_CORE_VENDOR(_v) _BHND_SET_MATCH_FIELD(core_vendor, _v)
#define BHND_MATCH_CORE_ID(_id) _BHND_SET_MATCH_FIELD(core_id, _id)
#define BHND_MATCH_CORE_REV(_rev) _BHND_SET_MATCH_FIELD(core_rev, \
BHND_ ## _rev)
#define BHND_MATCH_CORE_CLASS(_cls) _BHND_SET_MATCH_FIELD(core_class, _cls)
#define BHND_MATCH_CORE_IDX(_idx) _BHND_SET_MATCH_FIELD(core_idx, _idx)
#define BHND_MATCH_CORE_UNIT(_unit) _BHND_SET_MATCH_FIELD(core_unit, _unit)
/**
* Match against the given @p _vendor and @p _id,
*/
#define BHND_MATCH_CORE(_vendor, _id) \
BHND_MATCH_CORE_VENDOR(_vendor), \
BHND_MATCH_CORE_ID(_id)
/**
* A bhnd(4) chip match descriptor.
*/
struct bhnd_chip_match {
/** Select fields to be matched */
union {
uint8_t match_flags;
struct {
uint8_t
chip_id:1,
chip_rev:1,
chip_pkg:1,
flags_unused:5;
} match;
} m;
uint16_t chip_id; /**< required chip id */
struct bhnd_hwrev_match chip_rev; /**< matching chip revisions */
uint8_t chip_pkg; /**< required package */
};
#define _BHND_CHIP_MATCH_COPY(_src) \
_BHND_COPY_MATCH_FIELD(_src, chip_id), \
_BHND_COPY_MATCH_FIELD(_src, chip_rev), \
_BHND_COPY_MATCH_FIELD(_src, chip_pkg) \
/** Set the required chip ID within a bhnd match descriptor */
#define BHND_CHIP_ID(_cid) _BHND_SET_MATCH_FIELD(chip_id, \
BHND_CHIPID_ ## _cid)
/** Set the required chip revision range within a bhnd match descriptor */
#define BHND_CHIP_REV(_rev) _BHND_SET_MATCH_FIELD(chip_rev, \
BHND_ ## _rev)
/** Set the required package ID within a bhnd match descriptor */
#define BHND_CHIP_PKG(_pkg) _BHND_SET_MATCH_FIELD(chip_pkg, \
BHND_PKGID_ ## _pkg)
/** Set the required chip and package ID within a bhnd match descriptor */
#define BHND_CHIP_IP(_cid, _pkg) \
BHND_CHIP_ID(_cid), BHND_CHIP_PKG(_pkg)
/** Set the required chip ID, package ID, and revision within a bhnd_device_match
* instance */
#define BHND_CHIP_IPR(_cid, _pkg, _rev) \
BHND_CHIP_ID(_cid), BHND_CHIP_PKG(_pkg), BHND_CHIP_REV(_rev)
/** Set the required chip ID and revision within a bhnd_device_match
* instance */
#define BHND_CHIP_IR(_cid, _rev) \
BHND_CHIP_ID(_cid), BHND_CHIP_REV(_rev)
/**
* A bhnd(4) board match descriptor.
*/
struct bhnd_board_match {
/** Select fields to be matched */
union {
uint8_t match_flags;
struct {
uint8_t
board_vendor:1,
board_type:1,
board_rev:1,
board_srom_rev:1,
flags_unused:4;
} match;
} m;
uint16_t board_vendor; /**< required board vendor */
uint16_t board_type; /**< required board type */
struct bhnd_hwrev_match board_rev; /**< matching board revisions */
struct bhnd_hwrev_match board_srom_rev; /**< matching board srom revisions */
};
#define _BHND_BOARD_MATCH_COPY(_src) \
_BHND_COPY_MATCH_FIELD(_src, board_vendor), \
_BHND_COPY_MATCH_FIELD(_src, board_type), \
_BHND_COPY_MATCH_FIELD(_src, board_rev), \
_BHND_COPY_MATCH_FIELD(_src, board_srom_rev)
/** Set the required board vendor within a bhnd match descriptor */
#define BHND_MATCH_BOARD_VENDOR(_v) _BHND_SET_MATCH_FIELD(board_vendor, _v)
/** Set the required board type within a bhnd match descriptor */
#define BHND_MATCH_BOARD_TYPE(_type) _BHND_SET_MATCH_FIELD(board_type, \
BHND_BOARD_ ## _type)
/** Set the required SROM revision range within a bhnd match descriptor */
#define BHND_MATCH_SROMREV(_rev) _BHND_SET_MATCH_FIELD(board_srom_rev, \
BHND_HWREV_ ## _rev)
/** Set the required board revision range within a bhnd match descriptor */
#define BHND_MATCH_BOARD_REV(_rev) _BHND_SET_MATCH_FIELD(board_rev, \
BHND_ ## _rev)
/** Set the required board vendor and type within a bhnd match descriptor */
#define BHND_MATCH_BOARD(_vend, _type) \
BHND_MATCH_BOARD_VENDOR(_vend), BHND_MATCH_BOARD_TYPE(_type)
/**
* A bhnd(4) device match descriptor.
*
* @warning Matching on board attributes relies on NVRAM access, and will
* fail if a valid NVRAM device cannot be found, or is not yet attached.
*/
struct bhnd_device_match {
/** Select fields to be matched */
union {
uint16_t match_flags;
struct {
uint16_t
core_vendor:1,
core_id:1,
core_rev:1,
core_class:1,
core_idx:1,
core_unit:1,
chip_id:1,
chip_rev:1,
chip_pkg:1,
board_vendor:1,
board_type:1,
board_rev:1,
board_srom_rev:1,
flags_unused:1;
} match;
} m;
uint16_t core_vendor; /**< required JEP106 device vendor */
uint16_t core_id; /**< required core ID */
struct bhnd_hwrev_match core_rev; /**< matching core revisions. */
bhnd_devclass_t core_class; /**< required bhnd class */
u_int core_idx; /**< required core index */
int core_unit; /**< required core unit */
uint16_t chip_id; /**< required chip id */
struct bhnd_hwrev_match chip_rev; /**< matching chip revisions */
uint8_t chip_pkg; /**< required package */
uint16_t board_vendor; /**< required board vendor */
uint16_t board_type; /**< required board type */
struct bhnd_hwrev_match board_rev; /**< matching board revisions */
struct bhnd_hwrev_match board_srom_rev; /**< matching board srom revisions */
};
/** Define a wildcard match requirement (matches on any device). */
#define BHND_MATCH_ANY .m.match_flags = 0
#define BHND_MATCH_IS_ANY(_m) \
((_m)->m.match_flags == 0)
#endif /* _BHND_BHND_MATCH_H_ */