111d7cb2e3
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
104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/*-
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* Copyright (c) 2015 Landon Fuller <landon@landonf.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*
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* $FreeBSD$
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*/
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#ifndef _BHND_BHNDBVAR_H_
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#define _BHND_BHNDBVAR_H_
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <sys/rman.h>
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#include <dev/bhnd/bhndvar.h>
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#include "bhndb.h"
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#include "bhndb_if.h"
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/*
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* Definitions shared by bhndb(4) driver implementations.
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*/
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DECLARE_CLASS(bhndb_driver);
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struct bhndb_resources;
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int bhndb_attach(device_t dev, bhnd_devclass_t bridge_devclass);
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int bhndb_generic_probe(device_t dev);
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int bhndb_generic_detach(device_t dev);
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int bhndb_generic_suspend(device_t dev);
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int bhndb_generic_resume(device_t dev);
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int bhndb_generic_init_full_config(device_t dev, device_t child,
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const struct bhndb_hw_priority *hw_prio_table);
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int bhnd_generic_br_suspend_child(device_t dev, device_t child);
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int bhnd_generic_br_resume_child(device_t dev, device_t child);
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/**
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* bhndb child address space. Children either operate in the bridged
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* SoC address space, or within the address space mapped to the host
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* device (e.g. the PCI BAR(s)).
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*/
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typedef enum {
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BHNDB_ADDRSPACE_BRIDGED, /**< bridged (SoC) address space */
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BHNDB_ADDRSPACE_NATIVE /**< host address space */
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} bhndb_addrspace;
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/** bhndb child instance state */
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struct bhndb_devinfo {
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bhndb_addrspace addrspace; /**< child address space. */
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struct resource_list resources; /**< child resources. */
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};
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/**
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* bhndb driver instance state. Must be first member of all subclass
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* softc structures.
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*/
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struct bhndb_softc {
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device_t dev; /**< bridge device */
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struct bhnd_chipid chipid; /**< chip identification */
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bhnd_devclass_t bridge_class; /**< bridge core type */
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struct bhnd_core_info bridge_core; /**< bridge core. not populated until
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* full bridge config is initialized */
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bool have_br_core; /**< false if not yet available */
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device_t parent_dev; /**< parent device */
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device_t bus_dev; /**< child bhnd(4) bus */
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struct mtx sc_mtx; /**< resource lock. */
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struct bhndb_resources *bus_res; /**< bus resource state */
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};
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#endif /* _BHND_BHNDBVAR_H_ */
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