mirror of
https://github.com/freebsd/freebsd-src
synced 2024-10-06 16:40:47 +00:00
9dbf5b0e68
The public bus_release_resource() API still accepts both forms, but the internal kobj method no longer passes the arguments. Implementations which need the rid or type now use rman_get_rid() or rman_get_type() to fetch the value from the allocated resource. Reviewed by: imp Differential Revision: https://reviews.freebsd.org/D44131
455 lines
12 KiB
C
455 lines
12 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright 2002 by Peter Grehan. 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.
|
|
* 3. The name of the author 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 ``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.
|
|
*/
|
|
|
|
/*
|
|
* PSIM 'iobus' local bus. Should be set up in the device tree like:
|
|
*
|
|
* /iobus@0x80000000/name psim-iobus
|
|
*
|
|
* Code borrowed from various nexus.c and uninorth.c :-)
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
#include <machine/bus.h>
|
|
#include <sys/rman.h>
|
|
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/openfirm.h>
|
|
|
|
#include <machine/vmparam.h>
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
|
|
#include <machine/resource.h>
|
|
|
|
#include <powerpc/psim/iobusvar.h>
|
|
|
|
struct iobus_softc {
|
|
phandle_t sc_node;
|
|
vm_offset_t sc_addr;
|
|
vm_offset_t sc_size;
|
|
struct rman sc_mem_rman;
|
|
};
|
|
|
|
static MALLOC_DEFINE(M_IOBUS, "iobus", "iobus device information");
|
|
|
|
static int iobus_probe(device_t);
|
|
static int iobus_attach(device_t);
|
|
static int iobus_print_child(device_t dev, device_t child);
|
|
static void iobus_probe_nomatch(device_t, device_t);
|
|
static int iobus_read_ivar(device_t, device_t, int, uintptr_t *);
|
|
static int iobus_write_ivar(device_t, device_t, int, uintptr_t);
|
|
static struct rman *iobus_get_rman(device_t, int, u_int);
|
|
static struct resource *iobus_alloc_resource(device_t, device_t, int, int *,
|
|
rman_res_t, rman_res_t, rman_res_t,
|
|
u_int);
|
|
static int iobus_adjust_resource(device_t, device_t, struct resource *,
|
|
rman_res_t, rman_res_t);
|
|
static int iobus_activate_resource(device_t, device_t, struct resource *);
|
|
static int iobus_deactivate_resource(device_t, device_t, struct resource *);
|
|
static int iobus_map_resource(device_t, device_t, struct resource *,
|
|
struct resource_map_request *,
|
|
struct resource_map *);
|
|
static int iobus_unmap_resource(device_t, device_t, struct resource *,
|
|
struct resource_map *);
|
|
static int iobus_release_resource(device_t, device_t, struct resource *);
|
|
|
|
/*
|
|
* Bus interface definition
|
|
*/
|
|
static device_method_t iobus_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, iobus_probe),
|
|
DEVMETHOD(device_attach, iobus_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, iobus_print_child),
|
|
DEVMETHOD(bus_probe_nomatch, iobus_probe_nomatch),
|
|
DEVMETHOD(bus_read_ivar, iobus_read_ivar),
|
|
DEVMETHOD(bus_write_ivar, iobus_write_ivar),
|
|
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
|
|
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
|
|
|
|
DEVMETHOD(bus_get_rman, iobus_get_rman),
|
|
DEVMETHOD(bus_alloc_resource, iobus_alloc_resource),
|
|
DEVMETHOD(bus_adjust_resource, iobus_adjust_resource),
|
|
DEVMETHOD(bus_release_resource, iobus_release_resource),
|
|
DEVMETHOD(bus_activate_resource, iobus_activate_resource),
|
|
DEVMETHOD(bus_deactivate_resource, iobus_deactivate_resource),
|
|
DEVMETHOD(bus_map_resource, iobus_map_resource),
|
|
DEVMETHOD(bus_unmap_resource, iobus_unmap_resource),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t iobus_driver = {
|
|
"iobus",
|
|
iobus_methods,
|
|
sizeof(struct iobus_softc)
|
|
};
|
|
|
|
DRIVER_MODULE(iobus, ofwbus, iobus_driver, 0, 0);
|
|
|
|
static int
|
|
iobus_probe(device_t dev)
|
|
{
|
|
const char *type = ofw_bus_get_name(dev);
|
|
|
|
if (strcmp(type, "psim-iobus") != 0)
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, "PSIM local bus");
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Add interrupt/addr range to the dev's resource list if present
|
|
*/
|
|
static void
|
|
iobus_add_intr(phandle_t devnode, struct iobus_devinfo *dinfo)
|
|
{
|
|
u_int intr = -1;
|
|
|
|
if (OF_getprop(devnode, "interrupt", &intr, sizeof(intr)) != -1) {
|
|
resource_list_add(&dinfo->id_resources,
|
|
SYS_RES_IRQ, 0, intr, intr, 1);
|
|
}
|
|
dinfo->id_interrupt = intr;
|
|
}
|
|
|
|
static void
|
|
iobus_add_reg(phandle_t devnode, struct iobus_devinfo *dinfo,
|
|
vm_offset_t iobus_off)
|
|
{
|
|
u_int size;
|
|
int i;
|
|
|
|
size = OF_getprop(devnode, "reg", dinfo->id_reg,sizeof(dinfo->id_reg));
|
|
|
|
if (size != -1) {
|
|
dinfo->id_nregs = size / (sizeof(dinfo->id_reg[0]));
|
|
|
|
for (i = 0; i < dinfo->id_nregs; i+= 3) {
|
|
/*
|
|
* Scale the absolute addresses back to iobus
|
|
* relative offsets. This is to better simulate
|
|
* macio
|
|
*/
|
|
dinfo->id_reg[i+1] -= iobus_off;
|
|
|
|
resource_list_add(&dinfo->id_resources,
|
|
SYS_RES_MEMORY, 0,
|
|
dinfo->id_reg[i+1],
|
|
dinfo->id_reg[i+1] +
|
|
dinfo->id_reg[i+2],
|
|
dinfo->id_reg[i+2]);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
iobus_attach(device_t dev)
|
|
{
|
|
struct iobus_softc *sc;
|
|
struct iobus_devinfo *dinfo;
|
|
phandle_t root;
|
|
phandle_t child;
|
|
device_t cdev;
|
|
char *name;
|
|
u_int reg[2];
|
|
int size;
|
|
|
|
sc = device_get_softc(dev);
|
|
sc->sc_node = ofw_bus_get_node(dev);
|
|
|
|
/*
|
|
* Find the base addr/size of the iobus, and initialize the
|
|
* resource manager
|
|
*/
|
|
size = OF_getprop(sc->sc_node, "reg", reg, sizeof(reg));
|
|
if (size == sizeof(reg)) {
|
|
sc->sc_addr = reg[0];
|
|
sc->sc_size = reg[1];
|
|
} else {
|
|
return (ENXIO);
|
|
}
|
|
|
|
sc->sc_mem_rman.rm_type = RMAN_ARRAY;
|
|
sc->sc_mem_rman.rm_descr = "IOBus Device Memory";
|
|
if (rman_init(&sc->sc_mem_rman) != 0) {
|
|
device_printf(dev,
|
|
"failed to init mem range resources\n");
|
|
return (ENXIO);
|
|
}
|
|
rman_manage_region(&sc->sc_mem_rman, 0, sc->sc_size);
|
|
|
|
/*
|
|
* Iterate through the sub-devices
|
|
*/
|
|
root = sc->sc_node;
|
|
|
|
for (child = OF_child(root); child != 0; child = OF_peer(child)) {
|
|
OF_getprop_alloc(child, "name", (void **)&name);
|
|
|
|
cdev = device_add_child(dev, NULL, -1);
|
|
if (cdev != NULL) {
|
|
dinfo = malloc(sizeof(*dinfo), M_IOBUS, M_WAITOK);
|
|
memset(dinfo, 0, sizeof(*dinfo));
|
|
resource_list_init(&dinfo->id_resources);
|
|
dinfo->id_node = child;
|
|
dinfo->id_name = name;
|
|
iobus_add_intr(child, dinfo);
|
|
iobus_add_reg(child, dinfo, sc->sc_addr);
|
|
device_set_ivars(cdev, dinfo);
|
|
} else {
|
|
OF_prop_free(name);
|
|
}
|
|
}
|
|
|
|
return (bus_generic_attach(dev));
|
|
}
|
|
|
|
static int
|
|
iobus_print_child(device_t dev, device_t child)
|
|
{
|
|
struct iobus_devinfo *dinfo;
|
|
struct resource_list *rl;
|
|
int retval = 0;
|
|
|
|
dinfo = device_get_ivars(child);
|
|
rl = &dinfo->id_resources;
|
|
|
|
retval += bus_print_child_header(dev, child);
|
|
|
|
retval += printf(" offset 0x%x", dinfo->id_reg[1]);
|
|
retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd");
|
|
|
|
retval += bus_print_child_footer(dev, child);
|
|
|
|
return (retval);
|
|
}
|
|
|
|
static void
|
|
iobus_probe_nomatch(device_t dev, device_t child)
|
|
{
|
|
}
|
|
|
|
static int
|
|
iobus_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
|
|
{
|
|
struct iobus_devinfo *dinfo;
|
|
|
|
if ((dinfo = device_get_ivars(child)) == NULL)
|
|
return (ENOENT);
|
|
|
|
switch (which) {
|
|
case IOBUS_IVAR_NODE:
|
|
*result = dinfo->id_node;
|
|
break;
|
|
case IOBUS_IVAR_NAME:
|
|
*result = (uintptr_t)dinfo->id_name;
|
|
break;
|
|
case IOBUS_IVAR_NREGS:
|
|
*result = dinfo->id_nregs;
|
|
break;
|
|
case IOBUS_IVAR_REGS:
|
|
*result = (uintptr_t)dinfo->id_reg;
|
|
break;
|
|
default:
|
|
return (ENOENT);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
iobus_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
|
|
{
|
|
return (EINVAL);
|
|
}
|
|
|
|
static struct rman *
|
|
iobus_get_rman(device_t bus, int type, u_int flags)
|
|
{
|
|
struct iobus_softc *sc;
|
|
|
|
sc = device_get_softc(bus);
|
|
switch (type) {
|
|
case SYS_RES_MEMORY:
|
|
case SYS_RES_IOPORT:
|
|
return (&sc->sc_mem_rman);
|
|
default:
|
|
return (NULL);
|
|
}
|
|
}
|
|
|
|
static struct resource *
|
|
iobus_alloc_resource(device_t bus, device_t child, int type, int *rid,
|
|
rman_res_t start, rman_res_t end, rman_res_t count,
|
|
u_int flags)
|
|
{
|
|
|
|
switch (type) {
|
|
case SYS_RES_MEMORY:
|
|
case SYS_RES_IOPORT:
|
|
return (bus_generic_rman_alloc_resource(bus, child, type, rid,
|
|
start, end, count, flags));
|
|
case SYS_RES_IRQ:
|
|
return (bus_alloc_resource(bus, type, rid, start, end, count,
|
|
flags));
|
|
default:
|
|
device_printf(bus, "unknown resource request from %s\n",
|
|
device_get_nameunit(child));
|
|
return (NULL);
|
|
}
|
|
}
|
|
|
|
static int
|
|
iobus_adjust_resource(device_t bus, device_t child, struct resource *r,
|
|
rman_res_t start, rman_res_t end)
|
|
{
|
|
|
|
switch (rman_get_type(r)) {
|
|
case SYS_RES_MEMORY:
|
|
case SYS_RES_IOPORT:
|
|
return (bus_generic_rman_adjust_resource(bus, child, r, start,
|
|
end));
|
|
case SYS_RES_IRQ:
|
|
return (bus_generic_adjust_resource(bus, child, r, start, end));
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
}
|
|
|
|
static int
|
|
iobus_release_resource(device_t bus, device_t child, struct resource *res)
|
|
{
|
|
|
|
switch (rman_get_type(res)) {
|
|
case SYS_RES_MEMORY:
|
|
case SYS_RES_IOPORT:
|
|
return (bus_generic_rman_release_resource(bus, child, res));
|
|
case SYS_RES_IRQ:
|
|
return (bus_generic_release_resource(bus, child, res));
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
}
|
|
|
|
static int
|
|
iobus_activate_resource(device_t bus, device_t child, struct resource *res)
|
|
{
|
|
|
|
switch (rman_get_type(res)) {
|
|
case SYS_RES_IRQ:
|
|
return (bus_generic_activate_resource(bus, child, res));
|
|
case SYS_RES_IOPORT:
|
|
case SYS_RES_MEMORY:
|
|
return (bus_generic_rman_activate_resource(bus, child, res));
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
}
|
|
|
|
static int
|
|
iobus_deactivate_resource(device_t bus, device_t child, struct resource *res)
|
|
{
|
|
|
|
switch (rman_get_type(res)) {
|
|
case SYS_RES_IRQ:
|
|
return (bus_generic_deactivate_resource(bus, child, res));
|
|
case SYS_RES_IOPORT:
|
|
case SYS_RES_MEMORY:
|
|
return (bus_generic_rman_deactivate_resource(bus, child, res));
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
}
|
|
|
|
static int
|
|
iobus_map_resource(device_t bus, device_t child, struct resource *r,
|
|
struct resource_map_request *argsp, struct resource_map *map)
|
|
{
|
|
struct resource_map_request args;
|
|
struct iobus_softc *sc;
|
|
rman_res_t length, start;
|
|
int error;
|
|
|
|
/* Resources must be active to be mapped. */
|
|
if (!(rman_get_flags(r) & RF_ACTIVE))
|
|
return (ENXIO);
|
|
|
|
/* Mappings are only supported on I/O and memory resources. */
|
|
switch (rman_get_type(r)) {
|
|
case SYS_RES_IOPORT:
|
|
case SYS_RES_MEMORY:
|
|
break;
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
|
|
resource_init_map_request(&args);
|
|
error = resource_validate_map_request(r, argsp, &args, &start, &length);
|
|
if (error)
|
|
return (error);
|
|
|
|
sc = device_get_softc(bus);
|
|
map->r_vaddr = pmap_mapdev_attr((vm_paddr_t)start + sc->sc_addr,
|
|
(vm_size_t)length, args.memattr);
|
|
if (map->r_vaddr == NULL)
|
|
return (ENOMEM);
|
|
map->r_bustag = &bs_le_tag;
|
|
map->r_bushandle = (vm_offset_t)map->r_vaddr;
|
|
map->r_size = length;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
iobus_unmap_resource(device_t bus, device_t child, struct resource *r,
|
|
struct resource_map *map)
|
|
{
|
|
|
|
switch (rman_get_type(r)) {
|
|
case SYS_RES_IOPORT:
|
|
case SYS_RES_MEMORY:
|
|
pmap_unmapdev(map->r_vaddr, map->r_size);
|
|
return (0);
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
}
|