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Start hooking up devices.

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This commit is contained in:
Doug Rabson 2001-09-29 11:11:18 +00:00
parent 9a6f25fd59
commit 625768e4a0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=84124
5 changed files with 1304 additions and 0 deletions
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582
sys/ia64/ia64/nexus.c Normal file
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/*
* Copyright 1998 Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that both the above copyright notice and this
* permission notice appear in all copies, that both the above
* copyright notice and this permission notice appear in all
* supporting documentation, and that the name of M.I.T. not be used
* in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. M.I.T. makes
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
* SHALL M.I.T. 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.
*
* $FreeBSD$
*/
/*
* This code implements a `root nexus' for Intel Architecture
* machines. The function of the root nexus is to serve as an
* attachment point for both processors and buses, and to manage
* resources which are common to all of them. In particular,
* this code implements the core resource managers for interrupt
* requests, DMA requests (which rightfully should be a part of the
* ISA code but it's easier to do it here for now), I/O port addresses,
* and I/O memory address space.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <sys/interrupt.h>
#include <machine/vmparam.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/pmap.h>
#include <machine/nexusvar.h>
#include <machine/resource.h>
#include <isa/isavar.h>
#include <sys/rtprio.h>
static MALLOC_DEFINE(M_NEXUSDEV, "nexusdev", "Nexus device");
struct nexus_device {
struct resource_list nx_resources;
int nx_pcibus;
};
#define DEVTONX(dev) ((struct nexus_device *)device_get_ivars(dev))
static struct rman irq_rman, drq_rman, port_rman, mem_rman;
static int nexus_probe(device_t);
static int nexus_attach(device_t);
static int nexus_print_resources(struct resource_list *rl, const char *name, int type,
const char *format);
static int nexus_print_all_resources(device_t dev);
static int nexus_print_child(device_t, device_t);
static device_t nexus_add_child(device_t bus, int order, const char *name,
int unit);
static struct resource *nexus_alloc_resource(device_t, device_t, int, int *,
u_long, u_long, u_long, u_int);
static int nexus_read_ivar(device_t, device_t, int, uintptr_t *);
static int nexus_write_ivar(device_t, device_t, int, uintptr_t);
static int nexus_activate_resource(device_t, device_t, int, int,
struct resource *);
static int nexus_deactivate_resource(device_t, device_t, int, int,
struct resource *);
static int nexus_release_resource(device_t, device_t, int, int,
struct resource *);
static int nexus_setup_intr(device_t, device_t, struct resource *, int flags,
void (*)(void *), void *, void **);
static int nexus_teardown_intr(device_t, device_t, struct resource *,
void *);
static int nexus_set_resource(device_t, device_t, int, int, u_long, u_long);
static int nexus_get_resource(device_t, device_t, int, int, u_long *, u_long *);
static void nexus_delete_resource(device_t, device_t, int, int);
static device_method_t nexus_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, nexus_probe),
DEVMETHOD(device_attach, nexus_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_print_child, nexus_print_child),
DEVMETHOD(bus_add_child, nexus_add_child),
DEVMETHOD(bus_read_ivar, nexus_read_ivar),
DEVMETHOD(bus_write_ivar, nexus_write_ivar),
DEVMETHOD(bus_alloc_resource, nexus_alloc_resource),
DEVMETHOD(bus_release_resource, nexus_release_resource),
DEVMETHOD(bus_activate_resource, nexus_activate_resource),
DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource),
DEVMETHOD(bus_setup_intr, nexus_setup_intr),
DEVMETHOD(bus_teardown_intr, nexus_teardown_intr),
DEVMETHOD(bus_set_resource, nexus_set_resource),
DEVMETHOD(bus_get_resource, nexus_get_resource),
DEVMETHOD(bus_delete_resource, nexus_delete_resource),
{ 0, 0 }
};
static driver_t nexus_driver = {
"nexus",
nexus_methods,
1, /* no softc */
};
static devclass_t nexus_devclass;
DRIVER_MODULE(nexus, root, nexus_driver, nexus_devclass, 0, 0);
static int
nexus_probe(device_t dev)
{
device_quiet(dev); /* suppress attach message for neatness */
/*
* XXX working notes:
*
* - IRQ resource creation should be moved to the PIC/APIC driver.
* - DRQ resource creation should be moved to the DMAC driver.
* - The above should be sorted to probe earlier than any child busses.
*
* - Leave I/O and memory creation here, as child probes may need them.
* (especially eg. ACPI)
*/
/*
* IRQ's are on the mainboard on old systems, but on the ISA part
* of PCI->ISA bridges. There would be multiple sets of IRQs on
* multi-ISA-bus systems. PCI interrupts are routed to the ISA
* component, so in a way, PCI can be a partial child of an ISA bus(!).
* APIC interrupts are global though.
*
* XXX We depend on the AT PIC driver correctly claiming IRQ 2
* to prevent its reuse elsewhere in the !APIC_IO case.
*/
irq_rman.rm_start = 0;
irq_rman.rm_type = RMAN_ARRAY;
irq_rman.rm_descr = "Interrupt request lines";
irq_rman.rm_end = 15;
if (rman_init(&irq_rman)
|| rman_manage_region(&irq_rman,
irq_rman.rm_start, irq_rman.rm_end))
panic("nexus_probe irq_rman");
/*
* ISA DMA on PCI systems is implemented in the ISA part of each
* PCI->ISA bridge and the channels can be duplicated if there are
* multiple bridges. (eg: laptops with docking stations)
*/
drq_rman.rm_start = 0;
drq_rman.rm_end = 7;
drq_rman.rm_type = RMAN_ARRAY;
drq_rman.rm_descr = "DMA request lines";
/* XXX drq 0 not available on some machines */
if (rman_init(&drq_rman)
|| rman_manage_region(&drq_rman,
drq_rman.rm_start, drq_rman.rm_end))
panic("nexus_probe drq_rman");
/*
* However, IO ports and Memory truely are global at this level,
* as are APIC interrupts (however many IO APICS there turn out
* to be on large systems..)
*/
port_rman.rm_start = 0;
port_rman.rm_end = 0xffff;
port_rman.rm_type = RMAN_ARRAY;
port_rman.rm_descr = "I/O ports";
if (rman_init(&port_rman)
|| rman_manage_region(&port_rman, 0, 0xffff))
panic("nexus_probe port_rman");
mem_rman.rm_start = 0;
mem_rman.rm_end = ~0u;
mem_rman.rm_type = RMAN_ARRAY;
mem_rman.rm_descr = "I/O memory addresses";
if (rman_init(&mem_rman)
|| rman_manage_region(&mem_rman, 0, ~0))
panic("nexus_probe mem_rman");
return bus_generic_probe(dev);
}
static int
nexus_attach(device_t dev)
{
bus_generic_attach(dev);
return 0;
}
static int
nexus_print_resources(struct resource_list *rl, const char *name, int type,
const char *format)
{
struct resource_list_entry *rle;
int printed, retval;
printed = 0;
retval = 0;
/* Yes, this is kinda cheating */
SLIST_FOREACH(rle, rl, link) {
if (rle->type == type) {
if (printed == 0)
retval += printf(" %s ", name);
else if (printed > 0)
retval += printf(",");
printed++;
retval += printf(format, rle->start);
if (rle->count > 1) {
retval += printf("-");
retval += printf(format, rle->start +
rle->count - 1);
}
}
}
return retval;
}
static int
nexus_print_all_resources(device_t dev)
{
struct nexus_device *ndev = DEVTONX(dev);
struct resource_list *rl = &ndev->nx_resources;
int retval = 0;
if (SLIST_FIRST(rl) || ndev->nx_pcibus != -1)
retval += printf(" at");
retval += nexus_print_resources(rl, "port", SYS_RES_IOPORT, "%#lx");
retval += nexus_print_resources(rl, "iomem", SYS_RES_MEMORY, "%#lx");
retval += nexus_print_resources(rl, "irq", SYS_RES_IRQ, "%ld");
return retval;
}
static int
nexus_print_child(device_t bus, device_t child)
{
struct nexus_device *ndev = DEVTONX(child);
int retval = 0;
retval += bus_print_child_header(bus, child);
retval += nexus_print_all_resources(child);
if (ndev->nx_pcibus != -1)
retval += printf(" pcibus %d", ndev->nx_pcibus);
retval += printf(" on motherboard\n"); /* XXX "motherboard", ick */
return (retval);
}
static device_t
nexus_add_child(device_t bus, int order, const char *name, int unit)
{
device_t child;
struct nexus_device *ndev;
ndev = malloc(sizeof(struct nexus_device), M_NEXUSDEV, M_NOWAIT|M_ZERO);
if (!ndev)
return(0);
resource_list_init(&ndev->nx_resources);
ndev->nx_pcibus = -1;
child = device_add_child_ordered(bus, order, name, unit);
/* should we free this in nexus_child_detached? */
device_set_ivars(child, ndev);
return(child);
}
static int
nexus_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
struct nexus_device *ndev = DEVTONX(child);
switch (which) {
case NEXUS_IVAR_PCIBUS:
*result = ndev->nx_pcibus;
break;
default:
return ENOENT;
}
return 0;
}
static int
nexus_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
{
struct nexus_device *ndev = DEVTONX(child);
switch (which) {
case NEXUS_IVAR_PCIBUS:
ndev->nx_pcibus = value;
break;
default:
return ENOENT;
}
return 0;
}
/*
* Allocate a resource on behalf of child. NB: child is usually going to be a
* child of one of our descendants, not a direct child of nexus0.
* (Exceptions include npx.)
*/
static struct resource *
nexus_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct nexus_device *ndev = DEVTONX(child);
struct resource *rv;
struct resource_list_entry *rle;
struct rman *rm;
int needactivate = flags & RF_ACTIVE;
/*
* If this is an allocation of the "default" range for a given RID, and
* we know what the resources for this device are (ie. they aren't maintained
* by a child bus), then work out the start/end values.
*/
if ((start == 0UL) && (end == ~0UL) && (count == 1)) {
if (ndev == NULL)
return(NULL);
rle = resource_list_find(&ndev->nx_resources, type, *rid);
if (rle == NULL)
return(NULL);
start = rle->start;
end = rle->end;
count = rle->count;
}
flags &= ~RF_ACTIVE;
switch (type) {
case SYS_RES_IRQ:
rm = &irq_rman;
break;
case SYS_RES_DRQ:
rm = &drq_rman;
break;
case SYS_RES_IOPORT:
rm = &port_rman;
break;
case SYS_RES_MEMORY:
rm = &mem_rman;
break;
default:
return 0;
}
rv = rman_reserve_resource(rm, start, end, count, flags, child);
if (rv == 0)
return 0;
if (type == SYS_RES_MEMORY) {
rman_set_bustag(rv, IA64_BUS_SPACE_MEM);
} else if (type == SYS_RES_IOPORT) {
rman_set_bustag(rv, IA64_BUS_SPACE_IO);
/* IBM-PC: the type of bus_space_handle_t is u_int */
rman_set_bushandle(rv, rv->r_start);
}
if (needactivate) {
if (bus_activate_resource(child, type, *rid, rv)) {
rman_release_resource(rv);
return 0;
}
}
return rv;
}
static int
nexus_activate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
/*
* If this is a memory resource, map it into the kernel.
*/
if (rman_get_bustag(r) == IA64_BUS_SPACE_MEM) {
vm_offset_t paddr = rman_get_start(r);
vm_offset_t psize = rman_get_size(r);
caddr_t vaddr = 0;
vaddr = pmap_mapdev(paddr, psize);
rman_set_virtual(r, vaddr);
rman_set_bushandle(r, (bus_space_handle_t) paddr);
}
return (rman_activate_resource(r));
}
static int
nexus_deactivate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
return (rman_deactivate_resource(r));
}
static int
nexus_release_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
if (rman_get_flags(r) & RF_ACTIVE) {
int error = bus_deactivate_resource(child, type, rid, r);
if (error)
return error;
}
return (rman_release_resource(r));
}
/*
* Currently this uses the really grody interface from kern/kern_intr.c
* (which really doesn't belong in kern/anything.c). Eventually, all of
* the code in kern_intr.c and machdep_intr.c should get moved here, since
* this is going to be the official interface.
*/
static int
nexus_setup_intr(device_t bus, device_t child, struct resource *irq,
int flags, void (*ihand)(void *), void *arg, void **cookiep)
{
driver_t *driver;
int error;
/* somebody tried to setup an irq that failed to allocate! */
if (irq == NULL)
panic("nexus_setup_intr: NULL irq resource!");
*cookiep = 0;
if ((irq->r_flags & RF_SHAREABLE) == 0)
flags |= INTR_EXCL;
driver = device_get_driver(child);
/*
* We depend here on rman_activate_resource() being idempotent.
*/
error = rman_activate_resource(irq);
if (error)
return (error);
#if 0
error = inthand_add(device_get_nameunit(child), irq->r_start,
ihand, arg, flags, cookiep);
#endif
return (error);
}
static int
nexus_teardown_intr(device_t dev, device_t child, struct resource *r, void *ih)
{
#if 0
return (inthand_remove(ih));
#else
return 0;
#endif
}
static int
nexus_set_resource(device_t dev, device_t child, int type, int rid, u_long start, u_long count)
{
struct nexus_device *ndev = DEVTONX(child);
struct resource_list *rl = &ndev->nx_resources;
/* XXX this should return a success/failure indicator */
resource_list_add(rl, type, rid, start, start + count - 1, count);
return(0);
}
static int
nexus_get_resource(device_t dev, device_t child, int type, int rid, u_long *startp, u_long *countp)
{
struct nexus_device *ndev = DEVTONX(child);
struct resource_list *rl = &ndev->nx_resources;
struct resource_list_entry *rle;
rle = resource_list_find(rl, type, rid);
device_printf(child, "type %d rid %d startp %p countp %p - got %p\n",
type, rid, startp, countp, rle);
if (!rle)
return(ENOENT);
if (startp)
*startp = rle->start;
if (countp)
*countp = rle->count;
return(0);
}
static void
nexus_delete_resource(device_t dev, device_t child, int type, int rid)
{
struct nexus_device *ndev = DEVTONX(child);
struct resource_list *rl = &ndev->nx_resources;
resource_list_delete(rl, type, rid);
}
#if 0
/*
* Placeholder which claims PnP 'devices' which describe system
* resources.
*/
static struct isa_pnp_id sysresource_ids[] = {
{ 0x010cd041 /* PNP0c01 */, "System Memory" },
{ 0x020cd041 /* PNP0c02 */, "System Resource" },
{ 0 }
};
static int
sysresource_probe(device_t dev)
{
int result;
if ((result = ISA_PNP_PROBE(device_get_parent(dev), dev, sysresource_ids)) <= 0) {
device_quiet(dev);
}
return(result);
}
static int
sysresource_attach(device_t dev)
{
return(0);
}
static device_method_t sysresource_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, sysresource_probe),
DEVMETHOD(device_attach, sysresource_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
{ 0, 0 }
};
static driver_t sysresource_driver = {
"sysresource",
sysresource_methods,
1, /* no softc */
};
static devclass_t sysresource_devclass;
DRIVER_MODULE(sysresource, isa, sysresource_driver, sysresource_devclass, 0, 0);
#endif

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sys/ia64/include/nexusvar.h Normal file
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/*-
* Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org>
* 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.
*
* 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_NEXUSVAR_H_
#define _MACHINE_NEXUSVAR_H_ 1
enum nexus_device_ivars {
NEXUS_IVAR_PCIBUS
};
#define NEXUS_ACCESSOR(A, B, T) \
\
static __inline T nexus_get_ ## A(device_t dev) \
{ \
uintptr_t v; \
BUS_READ_IVAR(device_get_parent(dev), dev, NEXUS_IVAR_ ## B, &v); \
return (T) v; \
} \
\
static __inline void nexus_set_ ## A(device_t dev, T t) \
{ \
uintptr_t v = (uintptr_t) t; \
BUS_WRITE_IVAR(device_get_parent(dev), dev, NEXUS_IVAR_ ## B, v); \
}
NEXUS_ACCESSOR(pcibus, PCIBUS, u_int32_t)
#undef NEXUS_ACCESSOR
#endif /* !_MACHINE_NEXUSVAR_H_ */

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sys/ia64/include/pci_cfgreg.h Normal file
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/*
* Copyright (c) 1997, Stefan Esser <se@freebsd.org>
* 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 unmodified, 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
* $FreeBSD$
*
*/
extern int pci_cfgregopen(void);
extern u_int32_t pci_cfgregread(int bus, int slot, int func, int reg, int bytes);
extern void pci_cfgregwrite(int bus, int slot, int func, int reg, u_int32_t data, int bytes);

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sys/ia64/pci/nexus_pcib.c Normal file
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/*
* Copyright (c) 1997, Stefan Esser <se@freebsd.org>
* 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 unmodified, 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
* $FreeBSD$
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <pci/pcivar.h>
#include <pci/pcireg.h>
#include <isa/isavar.h>
#include <machine/nexusvar.h>
#include <machine/sal.h>
#include "pcib_if.h"
static int
nexus_pcib_maxslots(device_t dev)
{
return 31;
}
/* read configuration space register */
#define SAL_PCI_ADDRESS(bus, slot, func, reg) \
(((bus) << 23) | ((slot) << 11) | ((func) << 8) | (reg))
static u_int32_t
nexus_pcib_read_config(device_t dev, int bus, int slot, int func,
int reg, int bytes)
{
struct ia64_sal_result res;
res = ia64_sal_entry(SAL_PCI_CONFIG_READ,
SAL_PCI_ADDRESS(bus, slot, func, reg),
bytes, 0, 0, 0, 0, 0);
if (res.sal_status < 0)
return (~0);
else
return (res.sal_result[0]);
}
/* write configuration space register */
static void
nexus_pcib_write_config(device_t dev, int bus, int slot, int func,
int reg, u_int32_t data, int bytes)
{
struct ia64_sal_result res;
res = ia64_sal_entry(SAL_PCI_CONFIG_WRITE,
SAL_PCI_ADDRESS(bus, slot, func, reg),
bytes, data, 0, 0, 0, 0);
}
/* route interrupt */
static int
nexus_pcib_route_interrupt(device_t pcib, device_t dev, int pin)
{
return (0);
}
static devclass_t pcib_devclass;
static const char *
nexus_pcib_is_host_bridge(int bus, int slot, int func,
u_int32_t id, u_int8_t class, u_int8_t subclass,
u_int8_t *busnum)
{
const char *s = NULL;
static u_int8_t pxb[4]; /* hack for 450nx */
*busnum = 0;
switch (id) {
case 0x12258086:
s = "Intel 824?? host to PCI bridge";
/* XXX This is a guess */
/* *busnum = nexus_pcib_read_config(0, bus, slot, func, 0x41, 1); */
*busnum = bus;
break;
case 0x71208086:
s = "Intel 82810 (i810 GMCH) Host To Hub bridge";
break;
case 0x71228086:
s = "Intel 82810-DC100 (i810-DC100 GMCH) Host To Hub bridge";
break;
case 0x71248086:
s = "Intel 82810E (i810E GMCH) Host To Hub bridge";
break;
case 0x11308086:
s = "Intel 82815 (i815 GMCH) Host To Hub bridge";
break;
case 0x71808086:
s = "Intel 82443LX (440 LX) host to PCI bridge";
break;
case 0x71908086:
s = "Intel 82443BX (440 BX) host to PCI bridge";
break;
case 0x71928086:
s = "Intel 82443BX host to PCI bridge (AGP disabled)";
break;
case 0x71948086:
s = "Intel 82443MX host to PCI bridge";
break;
case 0x71a08086:
s = "Intel 82443GX host to PCI bridge";
break;
case 0x71a18086:
s = "Intel 82443GX host to AGP bridge";
break;
case 0x71a28086:
s = "Intel 82443GX host to PCI bridge (AGP disabled)";
break;
case 0x84c48086:
s = "Intel 82454KX/GX (Orion) host to PCI bridge";
*busnum = nexus_pcib_read_config(0, bus, slot, func, 0x4a, 1);
break;
case 0x84ca8086:
/*
* For the 450nx chipset, there is a whole bundle of
* things pretending to be host bridges. The MIOC will
* be seen first and isn't really a pci bridge (the
* actual busses are attached to the PXB's). We need to
* read the registers of the MIOC to figure out the
* bus numbers for the PXB channels.
*
* Since the MIOC doesn't have a pci bus attached, we
* pretend it wasn't there.
*/
pxb[0] = nexus_pcib_read_config(0, bus, slot, func,
0xd0, 1); /* BUSNO[0] */
pxb[1] = nexus_pcib_read_config(0, bus, slot, func,
0xd1, 1) + 1; /* SUBA[0]+1 */
pxb[2] = nexus_pcib_read_config(0, bus, slot, func,
0xd3, 1); /* BUSNO[1] */
pxb[3] = nexus_pcib_read_config(0, bus, slot, func,
0xd4, 1) + 1; /* SUBA[1]+1 */
return NULL;
case 0x84cb8086:
switch (slot) {
case 0x12:
s = "Intel 82454NX PXB#0, Bus#A";
*busnum = pxb[0];
break;
case 0x13:
s = "Intel 82454NX PXB#0, Bus#B";
*busnum = pxb[1];
break;
case 0x14:
s = "Intel 82454NX PXB#1, Bus#A";
*busnum = pxb[2];
break;
case 0x15:
s = "Intel 82454NX PXB#1, Bus#B";
*busnum = pxb[3];
break;
}
break;
/* AMD -- vendor 0x1022 */
case 0x70061022:
s = "AMD-751 host to PCI bridge";
break;
/* SiS -- vendor 0x1039 */
case 0x04961039:
s = "SiS 85c496";
break;
case 0x04061039:
s = "SiS 85c501";
break;
case 0x06011039:
s = "SiS 85c601";
break;
case 0x55911039:
s = "SiS 5591 host to PCI bridge";
break;
case 0x00011039:
s = "SiS 5591 host to AGP bridge";
break;
/* VLSI -- vendor 0x1004 */
case 0x00051004:
s = "VLSI 82C592 Host to PCI bridge";
break;
/* XXX Here is MVP3, I got the datasheet but NO M/B to test it */
/* totally. Please let me know if anything wrong. -F */
/* XXX need info on the MVP3 -- any takers? */
case 0x05981106:
s = "VIA 82C598MVP (Apollo MVP3) host bridge";
break;
/* AcerLabs -- vendor 0x10b9 */
/* Funny : The datasheet told me vendor id is "10b8",sub-vendor */
/* id is '10b9" but the register always shows "10b9". -Foxfair */
case 0x154110b9:
s = "AcerLabs M1541 (Aladdin-V) PCI host bridge";
break;
/* OPTi -- vendor 0x1045 */
case 0xc7011045:
s = "OPTi 82C700 host to PCI bridge";
break;
case 0xc8221045:
s = "OPTi 82C822 host to PCI Bridge";
break;
/* ServerWorks -- vendor 0x1166 */
case 0x00051166:
s = "ServerWorks NB6536 2.0HE host to PCI bridge";
*busnum = nexus_pcib_read_config(0, bus, slot, func, 0x44, 1);
break;
case 0x00061166:
/* FALLTHROUGH */
case 0x00081166:
s = "ServerWorks host to PCI bridge";
*busnum = nexus_pcib_read_config(0, bus, slot, func, 0x44, 1);
break;
case 0x00091166:
s = "ServerWorks NB6635 3.0LE host to PCI bridge";
*busnum = nexus_pcib_read_config(0, bus, slot, func, 0x44, 1);
break;
/* Integrated Micro Solutions -- vendor 0x10e0 */
case 0x884910e0:
s = "Integrated Micro Solutions VL Bridge";
break;
default:
if (class == PCIC_BRIDGE && subclass == PCIS_BRIDGE_HOST)
s = "Host to PCI bridge";
break;
}
return s;
}
/*
* Scan the first pci bus for host-pci bridges and add pcib instances
* to the nexus for each bridge.
*/
static void
nexus_pcib_identify(driver_t *driver, device_t parent)
{
int bus, slot, func;
u_int8_t hdrtype;
int found = 0;
int pcifunchigh;
int found824xx = 0;
int found_orion = 0;
device_t child;
devclass_t pci_devclass;
/*
* Check to see if we haven't already had a PCI bus added
* via some other means. If we have, bail since otherwise
* we're going to end up duplicating it.
*/
if ((pci_devclass = devclass_find("pci")) &&
devclass_get_device(pci_devclass, 0))
return;
bus = 0;
retry:
for (slot = 0; slot <= PCI_SLOTMAX; slot++) {
func = 0;
hdrtype = nexus_pcib_read_config(0, bus, slot, func,
PCIR_HEADERTYPE, 1);
if ((hdrtype & PCIM_MFDEV) &&
(!found_orion || hdrtype != 0xff))
pcifunchigh = 7;
else
pcifunchigh = 0;
for (func = 0; func <= pcifunchigh; func++) {
/*
* Read the IDs and class from the device.
*/
u_int32_t id;
u_int8_t class, subclass, busnum;
const char *s;
device_t *devs;
int ndevs, i;
id = nexus_pcib_read_config(0, bus, slot, func,
PCIR_DEVVENDOR, 4);
if (id == -1)
continue;
class = nexus_pcib_read_config(0, bus, slot, func,
PCIR_CLASS, 1);
subclass = nexus_pcib_read_config(0, bus, slot, func,
PCIR_SUBCLASS, 1);
s = nexus_pcib_is_host_bridge(bus, slot, func,
id, class, subclass,
&busnum);
if (s == NULL)
continue;
/*
* Check to see if the physical bus has already
* been seen. Eg: hybrid 32 and 64 bit host
* bridges to the same logical bus.
*/
if (device_get_children(parent, &devs, &ndevs) == 0) {
for (i = 0; s != NULL && i < ndevs; i++) {
if (strcmp(device_get_name(devs[i]),
"pcib") != 0)
continue;
if (nexus_get_pcibus(devs[i]) == busnum)
s = NULL;
}
free(devs, M_TEMP);
}
if (s == NULL)
continue;
/*
* Add at priority 100 to make sure we
* go after any motherboard resources
*/
child = BUS_ADD_CHILD(parent, 100,
"pcib", busnum);
device_set_desc(child, s);
nexus_set_pcibus(child, busnum);
found = 1;
if (id == 0x12258086)
found824xx = 1;
if (id == 0x84c48086)
found_orion = 1;
}
}
if (found824xx && bus == 0) {
bus++;
goto retry;
}
/*
* Make sure we add at least one bridge since some old
* hardware doesn't actually have a host-pci bridge device.
*/
if (!found) {
if (bootverbose)
printf(
"nexus_pcib_identify: no bridge found, adding pcib0 anyway\n");
child = BUS_ADD_CHILD(parent, 100, "pcib", 0);
nexus_set_pcibus(child, 0);
}
}
static int
nexus_pcib_probe(device_t dev)
{
devclass_t pci_devclass;
/*
* Check to see if we haven't already had a PCI bus added
* via some other means. If we have, bail since otherwise
* we're going to end up duplicating it.
*/
if ((pci_devclass = devclass_find("pci")) &&
devclass_get_device(pci_devclass, device_get_unit(dev)))
return ENXIO;
return 0;
}
static int
nexus_pcib_attach(device_t dev)
{
device_t child;
child = device_add_child(dev, "pci", device_get_unit(dev));
return bus_generic_attach(dev);
}
static int
nexus_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
switch (which) {
case PCIB_IVAR_BUS:
*result = nexus_get_pcibus(dev);
return 0;
}
return ENOENT;
}
static int
nexus_pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
{
switch (which) {
case PCIB_IVAR_BUS:
nexus_set_pcibus(dev, value);
return 0;
}
return ENOENT;
}
static device_method_t nexus_pcib_methods[] = {
/* Device interface */
DEVMETHOD(device_identify, nexus_pcib_identify),
DEVMETHOD(device_probe, nexus_pcib_probe),
DEVMETHOD(device_attach, nexus_pcib_attach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, nexus_pcib_read_ivar),
DEVMETHOD(bus_write_ivar, nexus_pcib_write_ivar),
DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
/* pcib interface */
DEVMETHOD(pcib_maxslots, nexus_pcib_maxslots),
DEVMETHOD(pcib_read_config, nexus_pcib_read_config),
DEVMETHOD(pcib_write_config, nexus_pcib_write_config),
DEVMETHOD(pcib_route_interrupt, nexus_pcib_route_interrupt),
{ 0, 0 }
};
static driver_t nexus_pcib_driver = {
"pcib",
nexus_pcib_methods,
1,
};
DRIVER_MODULE(pcib, nexus, nexus_pcib_driver, pcib_devclass, 0, 0);
/*
* Provide a device to "eat" the host->pci bridges that we dug up above
* and stop them showing up twice on the probes. This also stops them
* showing up as 'none' in pciconf -l.
*/
static int
pci_hostb_probe(device_t dev)
{
if (pci_get_class(dev) == PCIC_BRIDGE &&
pci_get_subclass(dev) == PCIS_BRIDGE_HOST) {
device_set_desc(dev, "Host to PCI bridge");
device_quiet(dev);
return -10000;
}
return ENXIO;
}
static int
pci_hostb_attach(device_t dev)
{
return 0;
}
static device_method_t pci_hostb_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, pci_hostb_probe),
DEVMETHOD(device_attach, pci_hostb_attach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
{ 0, 0 }
};
static driver_t pci_hostb_driver = {
"hostb",
pci_hostb_methods,
1,
};
static devclass_t pci_hostb_devclass;
DRIVER_MODULE(hostb, pci, pci_hostb_driver, pci_hostb_devclass, 0, 0);
/*
* Install placeholder to claim the resources owned by the
* PCI bus interface. This could be used to extract the
* config space registers in the extreme case where the PnP
* ID is available and the PCI BIOS isn't, but for now we just
* eat the PnP ID and do nothing else.
*
* XXX we should silence this probe, as it will generally confuse
* people.
*/
static struct isa_pnp_id pcibus_pnp_ids[] = {
{ 0x030ad041 /* PNP030A */, "PCI Bus" },
{ 0 }
};
static int
pcibus_pnp_probe(device_t dev)
{
int result;
if ((result = ISA_PNP_PROBE(device_get_parent(dev), dev, pcibus_pnp_ids)) <= 0)
device_quiet(dev);
return(result);
}
static int
pcibus_pnp_attach(device_t dev)
{
return(0);
}
static device_method_t pcibus_pnp_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, pcibus_pnp_probe),
DEVMETHOD(device_attach, pcibus_pnp_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
{ 0, 0 }
};
static driver_t pcibus_pnp_driver = {
"pcibus_pnp",
pcibus_pnp_methods,
1, /* no softc */
};
static devclass_t pcibus_pnp_devclass;
DRIVER_MODULE(pcibus_pnp, isa, pcibus_pnp_driver, pcibus_pnp_devclass, 0, 0);

65
sys/ia64/pci/pci_cfgreg.c Normal file
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@ -0,0 +1,65 @@
/*-
* Copyright (c) 2001 Doug Rabson
* 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.
*
* 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <machine/pci_cfgreg.h>
#include <machine/sal.h>
#define SAL_PCI_ADDRESS(bus, slot, func, reg) \
(((bus) << 23) | ((slot) << 11) | ((func) << 8) | (reg))
int
pci_cfgregopen(void)
{
return 1;
}
u_int32_t
pci_cfgregread(int bus, int slot, int func, int reg, int bytes)
{
struct ia64_sal_result res;
res = ia64_sal_entry(SAL_PCI_CONFIG_READ,
SAL_PCI_ADDRESS(bus, slot, func, reg),
bytes, 0, 0, 0, 0, 0);
if (res.sal_status < 0)
return (~0);
else
return (res.sal_result[0]);
}
void
pci_cfgregwrite(int bus, int slot, int func, int reg, u_int32_t data, int bytes)
{
struct ia64_sal_result res;
res = ia64_sal_entry(SAL_PCI_CONFIG_WRITE,
SAL_PCI_ADDRESS(bus, slot, func, reg),
bytes, data, 0, 0, 0, 0);
}