FreeBSD-5.3/sys/alpha/pci/pcibus.c
/*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/alpha/pci/pcibus.c,v 1.34.2.1 2004/09/02 06:12:19 marcel Exp $");
#include "opt_isa.h"
#define __RMAN_RESOURCE_VISIBLE
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/proc.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/interrupt.h>
#include <sys/sysctl.h>
#include <sys/rman.h>
#include <dev/pci/pcivar.h>
#include <machine/chipset.h>
#include <machine/cpuconf.h>
#include <machine/resource.h>
#include <machine/md_var.h>
#include <alpha/pci/pcibus.h>
#include <alpha/isa/isavar.h>
#include "alphapci_if.h"
#define ISA_IRQ_OFFSET 0xe0
#define ISA_IRQ_LEN 0x10
struct alpha_busspace *busspace_isa_io;
struct alpha_busspace *busspace_isa_mem;
char chipset_type[10];
int chipset_bwx = 0;
long chipset_ports = 0;
long chipset_memory = 0;
long chipset_dense = 0;
long chipset_hae_mask = 0;
SYSCTL_NODE(_hw, OID_AUTO, chipset, CTLFLAG_RW, 0, "PCI chipset information");
SYSCTL_STRING(_hw_chipset, OID_AUTO, type, CTLFLAG_RD, chipset_type, 0,
"PCI chipset type");
SYSCTL_INT(_hw_chipset, OID_AUTO, bwx, CTLFLAG_RD, &chipset_bwx, 0,
"PCI chipset supports BWX access");
SYSCTL_LONG(_hw_chipset, OID_AUTO, ports, CTLFLAG_RD, &chipset_ports, 0,
"PCI chipset port address");
SYSCTL_LONG(_hw_chipset, OID_AUTO, memory, CTLFLAG_RD, &chipset_memory, 0,
"PCI chipset memory address");
SYSCTL_LONG(_hw_chipset, OID_AUTO, dense, CTLFLAG_RD, &chipset_dense, 0,
"PCI chipset dense memory address");
SYSCTL_LONG(_hw_chipset, OID_AUTO, hae_mask, CTLFLAG_RD, &chipset_hae_mask, 0,
"PCI chipset mask for HAE register");
int
alpha_pci_route_interrupt(device_t bus, device_t dev, int pin)
{
/*
* Validate requested pin number.
*/
if ((pin < 1) || (pin > 4))
return(255);
if (platform.pci_intr_route)
return(platform.pci_intr_route(bus, dev, pin));
return(255);
}
#ifdef DEV_ISA
struct resource *
alpha_platform_alloc_ide_intr(int chan)
{
int irqs[2] = { 14, 15 };
return isa_alloc_intr(0, 0, irqs[chan]);
}
int
alpha_platform_release_ide_intr(int chan, struct resource *res)
{
return isa_release_intr(0, 0, res);
}
int
alpha_platform_setup_ide_intr(device_t dev,
struct resource *res,
driver_intr_t *fn, void *arg,
void **cookiep)
{
return isa_setup_intr(0, dev, res, INTR_TYPE_BIO, fn, arg, cookiep);
}
int
alpha_platform_teardown_ide_intr(device_t dev,
struct resource *res, void *cookie)
{
return isa_teardown_intr(0, dev, res, cookie);
}
#else
struct resource *
alpha_platform_alloc_ide_intr(int chan)
{
return (NULL);
}
int
alpha_platform_release_ide_intr(int chan, struct resource *res)
{
return (ENXIO);
}
int
alpha_platform_setup_ide_intr(struct resource *res,
driver_intr_t *fn, void *arg, void **cookiep)
{
return (ENXIO);
}
int
alpha_platform_teardown_ide_intr(struct resource *res, void *cookie)
{
return (ENXIO);
}
#endif
static struct rman irq_rman, port_rman, mem_rman;
int
alpha_platform_pci_setup_intr(device_t dev, device_t child,
struct resource *irq, int flags,
driver_intr_t *intr, void *arg,
void **cookiep)
{
#ifdef DEV_ISA
/*
* XXX - If we aren't the resource manager for this IRQ, assume that
* it is actually handled by the ISA PIC.
*/
if(irq->r_rm != &irq_rman)
return isa_setup_intr(dev, child, irq, flags, intr, arg,
cookiep);
else
#endif
return bus_generic_setup_intr(dev, child, irq, flags, intr,
arg, cookiep);
}
int
alpha_platform_pci_teardown_intr(device_t dev, device_t child,
struct resource *irq, void *cookie)
{
#ifdef DEV_ISA
/*
* XXX - If we aren't the resource manager for this IRQ, assume that
* it is actually handled by the ISA PIC.
*/
if(irq->r_rm != &irq_rman)
return isa_teardown_intr(dev, child, irq, cookie);
else
#endif
return bus_generic_teardown_intr(dev, child, irq, cookie);
}
void
pci_init_resources(void)
{
irq_rman.rm_start = 0;
irq_rman.rm_end = 65536;
irq_rman.rm_type = RMAN_ARRAY;
irq_rman.rm_descr = "PCI Mapped Interrupts";
if (rman_init(&irq_rman)
|| rman_manage_region(&irq_rman, 0, 65536))
panic("pci_init_resources irq_rman");
port_rman.rm_start = 0;
port_rman.rm_end = ~0u;
port_rman.rm_type = RMAN_ARRAY;
port_rman.rm_descr = "I/O ports";
if (rman_init(&port_rman)
|| rman_manage_region(&port_rman, 0x0, (1L << 32)))
panic("pci_init_resources 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";
if (rman_init(&mem_rman)
|| rman_manage_region(&mem_rman, 0x0, (1L << 32)))
panic("pci_init_resources mem_rman");
}
/*
* 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 the pci chipset.
*/
struct resource *
alpha_pci_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 rman *rm;
struct resource *rv;
void *va;
switch (type) {
case SYS_RES_IRQ:
#ifdef DEV_ISA
if((start >= ISA_IRQ_OFFSET) &&
(end < ISA_IRQ_OFFSET + ISA_IRQ_LEN)) {
return isa_alloc_intrs(bus, child,
start - ISA_IRQ_OFFSET,
end - ISA_IRQ_OFFSET);
}
else
#endif
rm = &irq_rman;
break;
case SYS_RES_IOPORT:
case SYS_RES_MEMORY:
rm = ALPHAPCI_GET_RMAN(bus, type);
break;
default:
return 0;
}
rv = rman_reserve_resource(rm, start, end, count, flags, child);
if (rv == 0)
return 0;
rman_set_bustag(rv, ALPHAPCI_GET_BUSTAG(bus, type));
rman_set_bushandle(rv, rv->r_start);
switch (type) {
case SYS_RES_MEMORY:
va = 0;
if (flags & PCI_RF_DENSE)
va = ALPHAPCI_CVT_DENSE(bus, rv->r_start);
else if (flags & PCI_RF_BWX)
va = ALPHAPCI_CVT_BWX(bus, rv->r_start);
else
va = (void *)ALPHA_PHYS_TO_K0SEG(rv->r_start);
rman_set_virtual(rv, va);
break;
}
return rv;
}
int
pci_activate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
return (rman_activate_resource(r));
}
int
pci_deactivate_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
return (rman_deactivate_resource(r));
}
int
pci_release_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
return (rman_release_resource(r));
}
struct alpha_busspace *
pci_get_bustag(device_t dev, int type)
{
switch (type) {
case SYS_RES_IOPORT:
return busspace_isa_io;
case SYS_RES_MEMORY:
return busspace_isa_mem;
}
return 0;
}
struct rman *
pci_get_rman(device_t dev, int type)
{
switch (type) {
case SYS_RES_IOPORT:
return &port_rman;
case SYS_RES_MEMORY:
return &mem_rman;
}
return 0;
}
#include "opt_ddb.h"
#ifdef DDB
#include <ddb/ddb.h>
DB_COMMAND(in, db_in)
{
int c;
int size;
if (!have_addr)
return;
size = -1;
while ((c = *modif++) != '\0') {
switch (c) {
case 'b':
size = 1;
break;
case 'w':
size = 2;
break;
case 'l':
size = 4;
break;
}
}
if (size < 0) {
db_printf("bad size\n");
return;
}
if (count <= 0) count = 1;
while (--count >= 0) {
db_printf("%08lx:\t", addr);
switch (size) {
case 1:
db_printf("%02x\n", inb(addr));
break;
case 2:
db_printf("%04x\n", inw(addr));
break;
case 4:
db_printf("%08x\n", inl(addr));
break;
}
}
}
#endif