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/* $OpenBSD: tsp_pci.c,v 1.2 2001/11/06 19:53:13 miod Exp $ */
/* $NetBSD: tsp_pci.c,v 1.1 1999/06/29 06:46:47 ross Exp $ */
/*-
* Copyright (c) 1999 by Ross Harvey. 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.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Ross Harvey.
* 4. The name of Ross Harvey may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY ROSS HARVEY ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURP0SE
* ARE DISCLAIMED. IN NO EVENT SHALL ROSS HARVEY BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <uvm/uvm_extern.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <machine/autoconf.h>
#include <machine/rpb.h>
#include <alpha/pci/tsreg.h>
#include <alpha/pci/tsvar.h>
#define tsp_pci() { Generate ctags(1) key. }
void tsp_attach_hook __P((struct device *, struct device *,
struct pcibus_attach_args *));
int tsp_bus_maxdevs __P((void *, int));
pcitag_t tsp_make_tag __P((void *, int, int, int));
void tsp_decompose_tag __P((void *, pcitag_t, int *, int *,
int *));
pcireg_t tsp_conf_read __P((void *, pcitag_t, int));
void tsp_conf_write __P((void *, pcitag_t, int, pcireg_t));
void
tsp_pci_init(pc, v)
pci_chipset_tag_t pc;
void *v;
{
pc->pc_conf_v = v;
pc->pc_attach_hook = tsp_attach_hook;
pc->pc_bus_maxdevs = tsp_bus_maxdevs;
pc->pc_make_tag = tsp_make_tag;
pc->pc_decompose_tag = tsp_decompose_tag;
pc->pc_conf_read = tsp_conf_read;
pc->pc_conf_write = tsp_conf_write;
}
void
tsp_attach_hook(parent, self, pba)
struct device *parent, *self;
struct pcibus_attach_args *pba;
{
}
int
tsp_bus_maxdevs(cpv, busno)
void *cpv;
int busno;
{
return 32;
}
pcitag_t
tsp_make_tag(cpv, b, d, f)
void *cpv;
int b, d, f;
{
return b << 16 | d << 11 | f << 8;
}
void
tsp_decompose_tag(cpv, tag, bp, dp, fp)
void *cpv;
pcitag_t tag;
int *bp, *dp, *fp;
{
if (bp != NULL)
*bp = (tag >> 16) & 0xff;
if (dp != NULL)
*dp = (tag >> 11) & 0x1f;
if (fp != NULL)
*fp = (tag >> 8) & 0x7;
}
/*
* Tsunami makes this a lot easier than it used to be, automatically
* generating type 0 or type 1 cycles, and quietly returning -1 with
* no errors on unanswered probes.
*/
pcireg_t
tsp_conf_read(cpv, tag, offset)
void *cpv;
pcitag_t tag;
int offset;
{
pcireg_t *datap, data;
struct tsp_config *pcp = cpv;
datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3));
alpha_mb();
data = *datap;
alpha_mb();
return data;
}
void
tsp_conf_write(cpv, tag, offset, data)
void *cpv;
pcitag_t tag;
int offset;
pcireg_t data;
{
pcireg_t *datap;
struct tsp_config *pcp = cpv;
datap = S_PAGE(pcp->pc_iobase | P_PCI_CONFIG | tag | (offset & ~3));
alpha_mb();
*datap = data;
alpha_mb();
}
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