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/* $NetBSD: Locore.c,v 1.7 2000/08/20 07:04:59 tsubai Exp $ */
/*-
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*/
/*-
* Copyright (C) 2000 Benno Rice.
* 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 Benno Rice ``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 TOOLS GMBH 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: release/9.1.0/sys/dev/ofw/openfirm.c 230884 2012-02-01 21:11:06Z marius $");
#include "opt_platform.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <machine/stdarg.h>
#include <dev/ofw/ofwvar.h>
#include <dev/ofw/openfirm.h>
#include "ofw_if.h"
static void OF_putchar(int c, void *arg);
MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties");
static ihandle_t stdout;
static ofw_def_t *ofw_def_impl = NULL;
static ofw_t ofw_obj;
static struct ofw_kobj ofw_kernel_obj;
static struct kobj_ops ofw_kernel_kops;
/*
* OFW install routines. Highest priority wins, equal priority also
* overrides allowing last-set to win.
*/
SET_DECLARE(ofw_set, ofw_def_t);
boolean_t
OF_install(char *name, int prio)
{
ofw_def_t *ofwp, **ofwpp;
static int curr_prio = 0;
/*
* Try and locate the OFW kobj corresponding to the name.
*/
SET_FOREACH(ofwpp, ofw_set) {
ofwp = *ofwpp;
if (ofwp->name &&
!strcmp(ofwp->name, name) &&
prio >= curr_prio) {
curr_prio = prio;
ofw_def_impl = ofwp;
return (TRUE);
}
}
return (FALSE);
}
/* Initializer */
int
OF_init(void *cookie)
{
phandle_t chosen;
int rv;
if (ofw_def_impl == NULL)
return (-1);
ofw_obj = &ofw_kernel_obj;
/*
* Take care of compiling the selected class, and
* then statically initialize the OFW object.
*/
kobj_class_compile_static(ofw_def_impl, &ofw_kernel_kops);
kobj_init_static((kobj_t)ofw_obj, ofw_def_impl);
rv = OFW_INIT(ofw_obj, cookie);
if ((chosen = OF_finddevice("/chosen")) > 0)
if (OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) == -1)
stdout = -1;
return (rv);
}
static void
OF_putchar(int c, void *arg __unused)
{
char cbuf;
if (c == '\n') {
cbuf = '\r';
OF_write(stdout, &cbuf, 1);
}
cbuf = c;
OF_write(stdout, &cbuf, 1);
}
void
OF_printf(const char *fmt, ...)
{
va_list va;
va_start(va, fmt);
(void)kvprintf(fmt, OF_putchar, NULL, 10, va);
va_end(va);
}
/*
* Generic functions
*/
/* Test to see if a service exists. */
int
OF_test(const char *name)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_TEST(ofw_obj, name));
}
int
OF_interpret(const char *cmd, int nreturns, ...)
{
va_list ap;
cell_t slots[16];
int i = 0;
int status;
if (ofw_def_impl == NULL)
return (-1);
status = OFW_INTERPRET(ofw_obj, cmd, nreturns, slots);
if (status == -1)
return (status);
va_start(ap, nreturns);
while (i < nreturns)
*va_arg(ap, cell_t *) = slots[i++];
va_end(ap);
return (status);
}
/*
* Device tree functions
*/
/* Return the next sibling of this node or 0. */
phandle_t
OF_peer(phandle_t node)
{
if (ofw_def_impl == NULL)
return (0);
return (OFW_PEER(ofw_obj, node));
}
/* Return the first child of this node or 0. */
phandle_t
OF_child(phandle_t node)
{
if (ofw_def_impl == NULL)
return (0);
return (OFW_CHILD(ofw_obj, node));
}
/* Return the parent of this node or 0. */
phandle_t
OF_parent(phandle_t node)
{
if (ofw_def_impl == NULL)
return (0);
return (OFW_PARENT(ofw_obj, node));
}
/* Return the package handle that corresponds to an instance handle. */
phandle_t
OF_instance_to_package(ihandle_t instance)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_INSTANCE_TO_PACKAGE(ofw_obj, instance));
}
/* Get the length of a property of a package. */
ssize_t
OF_getproplen(phandle_t package, const char *propname)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_GETPROPLEN(ofw_obj, package, propname));
}
/* Get the value of a property of a package. */
ssize_t
OF_getprop(phandle_t package, const char *propname, void *buf, size_t buflen)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_GETPROP(ofw_obj, package, propname, buf, buflen));
}
/*
* Recursively search the node and its parent for the given property, working
* downward from the node to the device tree root. Returns the value of the
* first match.
*/
ssize_t
OF_searchprop(phandle_t node, const char *propname, void *buf, size_t len)
{
ssize_t rv;
for (; node != 0; node = OF_parent(node))
if ((rv = OF_getprop(node, propname, buf, len)) != -1)
return (rv);
return (-1);
}
/*
* Store the value of a property of a package into newly allocated memory
* (using the M_OFWPROP malloc pool and M_WAITOK). elsz is the size of a
* single element, the number of elements is return in number.
*/
ssize_t
OF_getprop_alloc(phandle_t package, const char *propname, int elsz, void **buf)
{
int len;
*buf = NULL;
if ((len = OF_getproplen(package, propname)) == -1 ||
len % elsz != 0)
return (-1);
*buf = malloc(len, M_OFWPROP, M_WAITOK);
if (OF_getprop(package, propname, *buf, len) == -1) {
free(*buf, M_OFWPROP);
*buf = NULL;
return (-1);
}
return (len / elsz);
}
/* Get the next property of a package. */
int
OF_nextprop(phandle_t package, const char *previous, char *buf, size_t size)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_NEXTPROP(ofw_obj, package, previous, buf, size));
}
/* Set the value of a property of a package. */
int
OF_setprop(phandle_t package, const char *propname, const void *buf, size_t len)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_SETPROP(ofw_obj, package, propname, buf,len));
}
/* Convert a device specifier to a fully qualified pathname. */
ssize_t
OF_canon(const char *device, char *buf, size_t len)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_CANON(ofw_obj, device, buf, len));
}
/* Return a package handle for the specified device. */
phandle_t
OF_finddevice(const char *device)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_FINDDEVICE(ofw_obj, device));
}
/* Return the fully qualified pathname corresponding to an instance. */
ssize_t
OF_instance_to_path(ihandle_t instance, char *buf, size_t len)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_INSTANCE_TO_PATH(ofw_obj, instance, buf, len));
}
/* Return the fully qualified pathname corresponding to a package. */
ssize_t
OF_package_to_path(phandle_t package, char *buf, size_t len)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_PACKAGE_TO_PATH(ofw_obj, package, buf, len));
}
/* Call the method in the scope of a given instance. */
int
OF_call_method(const char *method, ihandle_t instance, int nargs, int nreturns,
...)
{
va_list ap;
cell_t args_n_results[12];
int n, status;
if (nargs > 6 || ofw_def_impl == NULL)
return (-1);
va_start(ap, nreturns);
for (n = 0; n < nargs; n++)
args_n_results[n] = va_arg(ap, cell_t);
status = OFW_CALL_METHOD(ofw_obj, instance, method, nargs, nreturns,
args_n_results);
if (status != 0)
return (status);
for (; n < nargs + nreturns; n++)
*va_arg(ap, cell_t *) = args_n_results[n];
va_end(ap);
return (0);
}
/*
* Device I/O functions
*/
/* Open an instance for a device. */
ihandle_t
OF_open(const char *device)
{
if (ofw_def_impl == NULL)
return (0);
return (OFW_OPEN(ofw_obj, device));
}
/* Close an instance. */
void
OF_close(ihandle_t instance)
{
if (ofw_def_impl == NULL)
return;
OFW_CLOSE(ofw_obj, instance);
}
/* Read from an instance. */
ssize_t
OF_read(ihandle_t instance, void *addr, size_t len)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_READ(ofw_obj, instance, addr, len));
}
/* Write to an instance. */
ssize_t
OF_write(ihandle_t instance, const void *addr, size_t len)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_WRITE(ofw_obj, instance, addr, len));
}
/* Seek to a position. */
int
OF_seek(ihandle_t instance, uint64_t pos)
{
if (ofw_def_impl == NULL)
return (-1);
return (OFW_SEEK(ofw_obj, instance, pos));
}
/*
* Memory functions
*/
/* Claim an area of memory. */
void *
OF_claim(void *virt, size_t size, u_int align)
{
if (ofw_def_impl == NULL)
return ((void *)-1);
return (OFW_CLAIM(ofw_obj, virt, size, align));
}
/* Release an area of memory. */
void
OF_release(void *virt, size_t size)
{
if (ofw_def_impl == NULL)
return;
OFW_RELEASE(ofw_obj, virt, size);
}
/*
* Control transfer functions
*/
/* Suspend and drop back to the Open Firmware interface. */
void
OF_enter()
{
if (ofw_def_impl == NULL)
return;
OFW_ENTER(ofw_obj);
}
/* Shut down and drop back to the Open Firmware interface. */
void
OF_exit()
{
if (ofw_def_impl == NULL)
panic("OF_exit: Open Firmware not available");
/* Should not return */
OFW_EXIT(ofw_obj);
for (;;) /* just in case */
;
}