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/* $OpenBSD: amd756.c,v 1.3 2002/03/14 01:26:33 millert Exp $ */
/* $NetBSD$ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*
* Copyright (c) 1999, by UCHIYAMA Yasushi
* 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. The name of the developer may NOT be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 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.
*/
/*
* Support for the Advanced Micro Devices AMD756 Peripheral Bus Controller.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <machine/intr.h>
#include <machine/bus.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
#include <i386/pci/pcibiosvar.h>
#include <i386/pci/amd756reg.h>
struct viper_handle {
bus_space_tag_t ph_iot;
bus_space_handle_t ph_regs_ioh;
pci_chipset_tag_t ph_pc;
pcitag_t ph_tag;
};
int amd756_getclink(pciintr_icu_handle_t, int, int *);
int amd756_get_intr(pciintr_icu_handle_t, int, int *);
int amd756_set_intr(pciintr_icu_handle_t, int, int);
int amd756_get_trigger(pciintr_icu_handle_t, int, int *);
int amd756_set_trigger(pciintr_icu_handle_t, int, int);
#ifdef VIPER_DEBUG
static void amd756_pir_dump(struct viper_handle *);
#endif
const struct pciintr_icu amd756_pci_icu = {
amd756_getclink,
amd756_get_intr,
amd756_set_intr,
amd756_get_trigger,
amd756_set_trigger,
};
int
amd756_init(pc, iot, tag, ptagp, phandp)
pci_chipset_tag_t pc;
bus_space_tag_t iot;
pcitag_t tag;
pciintr_icu_tag_t *ptagp;
pciintr_icu_handle_t *phandp;
{
struct viper_handle *ph;
ph = malloc(sizeof(*ph), M_DEVBUF, M_NOWAIT);
if (ph == NULL)
return (1);
ph->ph_iot = iot;
ph->ph_pc = pc;
ph->ph_tag = tag;
*ptagp = &amd756_pci_icu;
*phandp = ph;
#ifdef VIPER_DEBUG
amd756_pir_dump(ph);
#endif
return 0;
}
int
amd756_getclink(v, link, clinkp)
pciintr_icu_handle_t v;
int link, *clinkp;
{
if (AMD756_LEGAL_LINK(link - 1) == 0)
return (1);
*clinkp = link - 1;
return (0);
}
int
amd756_get_intr(v, clink, irqp)
pciintr_icu_handle_t v;
int clink, *irqp;
{
struct viper_handle *ph = v;
pcireg_t reg;
int val;
if (AMD756_LEGAL_LINK(clink) == 0)
return (1);
reg = AMD756_GET_PIIRQSEL(ph);
val = (reg >> (4*clink)) & 0x0f;
*irqp = (val == 0) ?
I386_PCI_INTERRUPT_LINE_NO_CONNECTION : val;
return (0);
}
int
amd756_set_intr(v, clink, irq)
pciintr_icu_handle_t v;
int clink, irq;
{
struct viper_handle *ph = v;
int val;
pcireg_t reg;
if (AMD756_LEGAL_LINK(clink) == 0 || AMD756_LEGAL_IRQ(irq) == 0)
return (1);
reg = AMD756_GET_PIIRQSEL(ph);
amd756_get_intr(v, clink, &val);
reg &= ~(0x000f << (4*clink));
reg |= irq << (4*clink);
AMD756_SET_PIIRQSEL(ph, reg);
return 0;
}
int
amd756_get_trigger(v, irq, triggerp)
pciintr_icu_handle_t v;
int irq, *triggerp;
{
struct viper_handle *ph = v;
int i, pciirq;
pcireg_t reg;
if (AMD756_LEGAL_IRQ(irq) == 0)
return (1);
for (i = 0; i <= 3; i++) {
amd756_get_intr(v, i, &pciirq);
if (pciirq == irq) {
reg = AMD756_GET_EDGESEL(ph);
if (reg & (1 << i))
*triggerp = IST_EDGE;
else
*triggerp = IST_LEVEL;
break;
}
}
return 0;
}
int
amd756_set_trigger(v, irq, trigger)
pciintr_icu_handle_t v;
int irq, trigger;
{
struct viper_handle *ph = v;
int i, pciirq;
pcireg_t reg;
if (AMD756_LEGAL_IRQ(irq) == 0)
return (1);
for (i = 0; i <= 3; i++) {
amd756_get_intr(v, i, &pciirq);
if (pciirq == irq) {
reg = AMD756_GET_PIIRQSEL(ph);
if (trigger == IST_LEVEL)
reg &= ~(1 << (4*i));
else
reg |= 1 << (4*i);
AMD756_SET_PIIRQSEL(ph, reg);
break;
}
}
return (0);
}
#ifdef VIPER_DEBUG
static void
amd756_pir_dump(ph)
struct viper_handle *ph;
{
int a, b;
printf ("VIPER PCI INTERRUPT ROUTING REGISTERS:\n");
a = AMD756_GET_EDGESEL(ph);
b = AMD756_GET_PIIRQSEL(ph);
printf ("TRIGGER: %02x, ROUTING: %04x\n", a, b);
}
#endif
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