d7be980dbe
Add a new get_id interface to pci and pcib. This will allow us to both detect failures, and get different PCI IDs. For the former the interface returns an int to signal an error. The ID is returned at a uintptr_t * argument. For the latter there is a type argument that allows selecting the ID type. This only specifies a single type, however a MSI type will be added to handle the need to find the ID the hardware passes to the ARM GICv3 interrupt controller. A follow up commit will be made to remove pci_get_rid. Reviewed by: jhb, rstone (previous version) Obtained from: ABT Systems Ltd Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D6239
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
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* Copyright (c) 2014 Sandvine Inc. All rights reserved.
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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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* Support functions for the PCI:PCI bridge driver. This has to be in a
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* separate file because kernel configurations end up referencing the functions
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* here even when pci support is compiled out of the kernel.
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*/
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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/malloc.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/sysctl.h>
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#include <sys/systm.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcib_private.h>
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#include "pcib_if.h"
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int
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pcib_maxfuncs(device_t dev)
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{
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return (PCI_FUNCMAX);
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}
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int
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pcib_get_id(device_t pcib, device_t dev, enum pci_id_type type, uintptr_t *id)
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{
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uint8_t bus, slot, func;
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if (type != PCI_ID_RID)
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return (ENXIO);
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bus = pci_get_bus(dev);
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slot = pci_get_slot(dev);
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func = pci_get_function(dev);
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*id = (PCI_RID(bus, slot, func));
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return (0);
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}
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void
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pcib_decode_rid(device_t pcib, uint16_t rid, int *bus, int *slot,
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int *func)
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{
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*bus = PCI_RID2BUS(rid);
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*slot = PCI_RID2SLOT(rid);
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*func = PCI_RID2FUNC(rid);
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}
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