149 lines
3.9 KiB
C
149 lines
3.9 KiB
C
/* $NetBSD: tsp_pci.c,v 1.1 1999/06/29 06:46:47 ross Exp $ */
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/*-
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* Copyright (c) 1999 by Ross Harvey. 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Ross Harvey.
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* 4. The name of Ross Harvey may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY ROSS HARVEY ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURP0SE
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* ARE DISCLAIMED. IN NO EVENT SHALL ROSS HARVEY BE LIABLE FOR ANY
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* 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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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <vm/vm.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <machine/autoconf.h>
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#include <machine/rpb.h>
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#include <alpha/pci/tsreg.h>
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#include <alpha/pci/tsvar.h>
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#define tsp_pci() { Generate ctags(1) key. }
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void tsp_attach_hook __P((struct device *, struct device *,
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struct pcibus_attach_args *));
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int tsp_bus_maxdevs __P((void *, int));
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pcitag_t tsp_make_tag __P((void *, int, int, int));
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void tsp_decompose_tag __P((void *, pcitag_t, int *, int *,
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int *));
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pcireg_t tsp_conf_read __P((void *, pcitag_t, int));
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void tsp_conf_write __P((void *, pcitag_t, int, pcireg_t));
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void
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tsp_pci_init(pc, v)
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pci_chipset_tag_t pc;
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void *v;
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{
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pc->pc_conf_v = v;
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pc->pc_attach_hook = tsp_attach_hook;
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pc->pc_bus_maxdevs = tsp_bus_maxdevs;
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pc->pc_make_tag = tsp_make_tag;
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pc->pc_decompose_tag = tsp_decompose_tag;
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pc->pc_conf_read = tsp_conf_read;
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pc->pc_conf_write = tsp_conf_write;
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}
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void
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tsp_attach_hook(parent, self, pba)
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struct device *parent, *self;
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struct pcibus_attach_args *pba;
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{
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}
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int
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tsp_bus_maxdevs(cpv, busno)
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void *cpv;
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int busno;
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{
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return 32;
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}
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pcitag_t
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tsp_make_tag(cpv, b, d, f)
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void *cpv;
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int b, d, f;
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{
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return b << 16 | d << 11 | f << 8;
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}
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void
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tsp_decompose_tag(cpv, tag, bp, dp, fp)
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void *cpv;
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pcitag_t tag;
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int *bp, *dp, *fp;
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{
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if (bp != NULL)
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*bp = (tag >> 16) & 0xff;
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if (dp != NULL)
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*dp = (tag >> 11) & 0x1f;
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if (fp != NULL)
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*fp = (tag >> 8) & 0x7;
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}
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/*
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* Tsunami makes this a lot easier than it used to be, automatically
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* generating type 0 or type 1 cycles, and quietly returning -1 with
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* no errors on unanswered probes.
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*/
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pcireg_t
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tsp_conf_read(cpv, tag, offset)
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void *cpv;
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pcitag_t tag;
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int offset;
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{
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pcireg_t *datap, data;
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struct tsp_config *pcp = cpv;
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datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3));
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alpha_mb();
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data = *datap;
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alpha_mb();
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return data;
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}
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void
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tsp_conf_write(cpv, tag, offset, data)
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void *cpv;
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pcitag_t tag;
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int offset;
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pcireg_t data;
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{
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pcireg_t *datap;
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struct tsp_config *pcp = cpv;
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datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3));
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alpha_mb();
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*datap = data;
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alpha_mb();
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}
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