FreeBSD-5.3/sys/alpha/pci/lca_pci.c
/*-
* Copyright (c) 1998 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, SPELCAL, 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/lca_pci.c,v 1.17 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/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <machine/cpuconf.h>
#include <machine/swiz.h>
#include <machine/md_var.h>
#include <alpha/pci/lcareg.h>
#include <alpha/pci/lcavar.h>
#include <alpha/pci/pcibus.h>
#include <alpha/isa/isavar.h>
#include "alphapci_if.h"
#include "pcib_if.h"
#define KV(pa) ALPHA_PHYS_TO_K0SEG(pa)
static devclass_t pcib_devclass;
static int
lca_pcib_probe(device_t dev)
{
device_set_desc(dev, "21066 PCI host bus adapter");
pci_init_resources();
device_add_child(dev, "pci", 0);
return 0;
}
static int
lca_pcib_read_ivar(device_t dev, device_t child, int which, u_long *result)
{
if (which == PCIB_IVAR_BUS) {
*result = 0;
return 0;
}
return ENOENT;
}
static struct resource *
lca_pcib_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
if (type == SYS_RES_IRQ)
return isa_alloc_intr(bus, child, start);
else
return alpha_pci_alloc_resource(bus, child, type, rid,
start, end, count, flags);
}
static int
lca_pcib_release_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
{
if (type == SYS_RES_IRQ)
return isa_release_intr(bus, child, r);
else
return pci_release_resource(bus, child, type, rid, r);
}
static void *
lca_pcib_cvt_dense(device_t dev, vm_offset_t addr)
{
addr &= 0xffffffffUL;
return (void *) KV(addr | LCA_PCI_DENSE);
}
static int
lca_pcib_maxslots(device_t dev)
{
return 15;
}
#define LCA_CFGOFF(b, s, f, r) \
((b) ? (((b) << 16) | ((s) << 11) | ((f) << 8) | (r)) \
: ((1 << ((s) + 11)) | ((f) << 8) | (r)))
#define LCA_TYPE1_SETUP(b,s) if ((b)) { \
do { \
(s) = splhigh(); \
alpha_mb(); \
REGVAL(LCA_IOC_CONF) = 1; \
alpha_mb(); \
} while(0); \
}
#define LCA_TYPE1_TEARDOWN(b,s) if ((b)) { \
do { \
alpha_mb(); \
REGVAL(LCA_IOC_CONF) = 0; \
alpha_mb(); \
splx((s)); \
} while(0); \
}
#define CFGREAD(b, s, f, r, width, type) do { \
type val = ~0; \
int ipl = 0; \
vm_offset_t off = LCA_CFGOFF(b, s, f, r); \
vm_offset_t kv = SPARSE_##width##_ADDRESS(KV(LCA_PCI_CONF), off); \
alpha_mb(); \
LCA_TYPE1_SETUP(b,ipl); \
if (!badaddr((caddr_t)kv, sizeof(type))) { \
val = SPARSE_##width##_EXTRACT(off, SPARSE_READ(kv)); \
} \
LCA_TYPE1_TEARDOWN(b,ipl); \
return val; \
} while (0)
#define CFGWRITE(b, s, f, r, data, width, type) do { \
int ipl = 0; \
vm_offset_t off = LCA_CFGOFF(b, s, f, r); \
vm_offset_t kv = SPARSE_##width##_ADDRESS(KV(LCA_PCI_CONF), off); \
alpha_mb(); \
LCA_TYPE1_SETUP(b,ipl); \
if (!badaddr((caddr_t)kv, sizeof(type))) { \
SPARSE_WRITE(kv, SPARSE_##width##_INSERT(off, data)); \
alpha_wmb(); \
} \
LCA_TYPE1_TEARDOWN(b,ipl); \
return; \
} while (0)
u_int32_t
lca_pcib_read_config(device_t dev, u_int b, u_int s, u_int f,
u_int reg, int width)
{
if ((reg == PCIR_INTLINE) && (width == 1)) {
/* SRM left bad value; let intr_route fill them in later */
return ~0;
}
switch (width) {
case 1:
CFGREAD(b, s, f, reg, BYTE, u_int8_t);
break;
case 2:
CFGREAD(b, s, f, reg, WORD, u_int16_t);
break;
case 4:
CFGREAD(b, s, f, reg, LONG, u_int32_t);
}
return ~0;
}
static void
lca_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, BYTE, u_int8_t);
break;
case 2:
CFGWRITE(b, s, f, reg, val, WORD, u_int16_t);
break;
case 4:
CFGWRITE(b, s, f, reg, val, LONG, u_int32_t);
}
}
static device_method_t lca_pcib_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, lca_pcib_probe),
DEVMETHOD(device_attach, bus_generic_attach),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, lca_pcib_read_ivar),
DEVMETHOD(bus_alloc_resource, lca_pcib_alloc_resource),
DEVMETHOD(bus_release_resource, lca_pcib_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, lca_pcib_cvt_dense),
/* pcib interface */
DEVMETHOD(pcib_maxslots, lca_pcib_maxslots),
DEVMETHOD(pcib_read_config, lca_pcib_read_config),
DEVMETHOD(pcib_write_config, lca_pcib_write_config),
DEVMETHOD(pcib_route_interrupt, alpha_pci_route_interrupt),
{ 0, 0 }
};
static driver_t lca_pcib_driver = {
"pcib",
lca_pcib_methods,
1,
};
DRIVER_MODULE(pcib, lca, lca_pcib_driver, pcib_devclass, 0, 0);