FreeBSD-5.3/sys/alpha/pci/irongate_pci.c
/*-
* Copyright (c) 2000 Andrew Gallatin
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/alpha/pci/irongate_pci.c,v 1.10 2003/08/22 07:20:27 imp Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/md_var.h>
#include <machine/bwx.h>
#include <sys/rman.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <alpha/pci/irongatereg.h>
#include <alpha/pci/irongatevar.h>
#include <alpha/pci/pcibus.h>
#include "alphapci_if.h"
#include "pcib_if.h"
#define KV(pa) ALPHA_PHYS_TO_K0SEG(pa)
static devclass_t pcib_devclass;
static int
irongate_pcib_probe(device_t dev)
{
device_set_desc(dev, "AMD 751 PCI host bus adapter");
pci_init_resources();
device_add_child(dev, "pci", 0);
/*
* XXX -- The SRM console doesn't properly initialize
* the AcerLabs M1533C southbridge. We must turn off 32-bit
* DMA support.
*/
if ((0x153310b9 == PCIB_READ_CONFIG(dev, 0, 7, 0,
PCIR_DEVVENDOR, 4))) {
u_int8_t value = PCIB_READ_CONFIG(dev, 0, 7, 0, 0x42, 1);
value &= ~0x40;
PCIB_WRITE_CONFIG(dev, 0, 7, 0, 0x42, 0, 1);
}
return 0;
}
static int
irongate_pcib_read_ivar(device_t dev, device_t child, int which, u_long *result)
{
switch (which) {
case PCIB_IVAR_BUS:
*result = 0;
return 0;
}
return ENOENT;
}
static void *
irongate_pcib_cvt_dense(device_t dev, vm_offset_t addr)
{
addr &= 0xffffffffUL;
return (void *) KV(addr | IRONGATE_MEM);
}
static void *
irongate_pcib_cvt_bwx(device_t dev, vm_offset_t addr)
{
addr &= 0xffffffffUL;
return (void *) KV(addr | IRONGATE_MEM);
}
static int
irongate_pcib_maxslots(device_t dev)
{
return 31;
}
static void
irongate_clear_abort(void)
{
alpha_mb();
alpha_pal_draina();
}
static int
irongate_check_abort(void)
{
alpha_pal_draina();
alpha_mb();
return 0;
}
#define IRONGATE_CFGADDR(b, s, f, r) \
KV(IRONGATE_CONF | ((b) << 16) | ((s) << 11) | ((f) << 8) | (r))
#define CFGREAD(b, s, f, r, width, type, op) do { \
vm_offset_t va; \
type data; \
va = IRONGATE_CFGADDR(b, s, f, r); \
irongate_clear_abort(); \
if (badaddr((caddr_t)va, width)) { \
irongate_check_abort(); \
return ~0; \
} \
data = op(va); \
if (irongate_check_abort()) \
return ~0; \
return data; \
} while (0)
#define CFGWRITE(b, s, f, r, data, width, op) do { \
vm_offset_t va; \
va = IRONGATE_CFGADDR(b, s, f, r); \
irongate_clear_abort(); \
if (badaddr((caddr_t)va, width)) \
return; \
op(va, data); \
irongate_check_abort(); \
} while (0)
static u_int32_t
irongate_pcib_read_config(device_t dev, u_int b, u_int s, u_int f,
u_int reg, int width)
{
switch (width) {
case 1:
CFGREAD(b, s, f, reg, 1, u_int8_t, ldbu);
break;
case 2:
CFGREAD(b, s, f, reg, 2, u_int16_t, ldwu);
break;
case 4:
CFGREAD(b, s, f, reg, 4, u_int32_t, ldl);
}
return ~0;
}
static void
irongate_pcib_write_config(device_t dev, u_int b, u_int s, u_int f,
u_int reg, u_int32_t val, int width)
{
switch (width) {
case 1:
CFGWRITE(b, s, f, reg, val, 1, stb);
break;
case 2:
CFGWRITE(b, s, f, reg, val, 2, stw);
break;
case 4:
CFGWRITE(b, s, f, reg, val, 4, stl);
}
}
static device_method_t irongate_pcib_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, irongate_pcib_probe),
DEVMETHOD(device_attach, bus_generic_attach),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, irongate_pcib_read_ivar),
DEVMETHOD(bus_alloc_resource, alpha_pci_alloc_resource),
DEVMETHOD(bus_release_resource, pci_release_resource),
DEVMETHOD(bus_activate_resource, pci_activate_resource),
DEVMETHOD(bus_deactivate_resource, pci_deactivate_resource),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
/* alphapci interface */
DEVMETHOD(alphapci_cvt_dense, irongate_pcib_cvt_dense),
DEVMETHOD(alphapci_cvt_bwx, irongate_pcib_cvt_bwx),
/* pcib interface */
DEVMETHOD(pcib_maxslots, irongate_pcib_maxslots),
DEVMETHOD(pcib_read_config, irongate_pcib_read_config),
DEVMETHOD(pcib_write_config, irongate_pcib_write_config),
DEVMETHOD(pcib_route_interrupt, alpha_pci_route_interrupt),
{ 0, 0 }
};
static driver_t irongate_pcib_driver = {
"pcib",
irongate_pcib_methods,
1,
};
DRIVER_MODULE(pcib, irongate, irongate_pcib_driver, pcib_devclass, 0, 0);