123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/* $NetBSD: pciconf_ofmethod.c,v 1.2 2008/04/28 20:23:32 martin Exp $ */
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/*-
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* Copyright (c) 2007 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jochen Kunz and Tim Rightnour
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* 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 IN
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* 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 THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Generic PowerPC functions for talking to a PCI Bridge via the RTAS or
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* OF methods of the device.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: pciconf_ofmethod.c,v 1.2 2008/04/28 20:23:32 martin Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <uvm/uvm_extern.h>
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#define _POWERPC_BUS_DMA_PRIVATE
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <machine/pio.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_pci.h>
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#if NISA > 0
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#include <dev/isa/isavar.h>
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#endif
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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/pcidevs.h>
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void
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genppc_pci_ofmethod_attach_hook(struct device *parent, struct device *self,
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struct pcibus_attach_args *pba)
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{
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if (pba->pba_bus != 0)
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return;
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aprint_normal(": OFW method configuration space access");
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}
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pcitag_t
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genppc_pci_ofmethod_make_tag(void *v, int bus, int dev, int func)
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{
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return ((bus << OFW_PCI_PHYS_HI_BUSSHIFT) & OFW_PCI_PHYS_HI_BUSMASK) |
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((dev << OFW_PCI_PHYS_HI_DEVICESHIFT) & OFW_PCI_PHYS_HI_DEVICEMASK)|
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((func << OFW_PCI_PHYS_HI_FUNCTIONSHIFT) &
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OFW_PCI_PHYS_HI_FUNCTIONMASK);
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}
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void
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genppc_pci_ofmethod_decompose_tag(void *v, pcitag_t tag, int *bp, int *dp,
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int *fp)
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{
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if (bp != NULL)
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*bp = OFW_PCI_PHYS_HI_BUS(tag);
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if (dp != NULL)
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*dp = OFW_PCI_PHYS_HI_DEVICE(tag);
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if (fp != NULL)
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*fp = OFW_PCI_PHYS_HI_FUNCTION(tag);
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return;
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}
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pcireg_t
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genppc_pci_ofmethod_conf_read(void *v, pcitag_t tag, int reg)
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{
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pci_chipset_tag_t pc = (pci_chipset_tag_t)v;
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pcireg_t data;
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tag &= OFW_PCI_PHYS_HI_BUSMASK | OFW_PCI_PHYS_HI_DEVICEMASK |
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OFW_PCI_PHYS_HI_FUNCTIONMASK;
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tag |= reg & OFW_PCI_PHYS_HI_REGISTERMASK;
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if (OF_call_method("config-l@", pc->pc_ihandle, 1, 1, tag, &data) < 0)
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return (pcireg_t) -1;
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/*printf("data=0x%x\n", data); */
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return data;
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}
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void
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genppc_pci_ofmethod_conf_write(void *v, pcitag_t tag, int reg, pcireg_t data)
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{
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pci_chipset_tag_t pc = (pci_chipset_tag_t)v;
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tag &= OFW_PCI_PHYS_HI_BUSMASK | OFW_PCI_PHYS_HI_DEVICEMASK |
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OFW_PCI_PHYS_HI_FUNCTIONMASK;
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tag |= reg & OFW_PCI_PHYS_HI_REGISTERMASK;
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OF_call_method("config-l!", pc->pc_ihandle, 2, 0, data, tag);
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}
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