/* $NetBSD: e500_autoconf.c,v 1.2 2011/01/18 01:02:52 matt Exp $ */
/*-
* Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Raytheon BBN Technologies Corp and Defense Advanced Research Projects
* Agency and which was developed by Matt Thomas of 3am Software Foundry.
*
* This material is based upon work supported by the Defense Advanced Research
* Projects Agency and Space and Naval Warfare Systems Center, Pacific, under
* Contract No. N66001-09-C-2073.
* Approved for Public Release, Distribution Unlimited
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
__KERNEL_RCSID(0, "$NetBSD: e500_autoconf.c,v 1.2 2011/01/18 01:02:52 matt Exp $");
#include <sys/param.h>
#include <sys/cpu.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <net/if.h>
#include <net/if_ether.h>
#define GLOBAL_PRIVATE
#include <powerpc/spr.h>
#include <powerpc/booke/spr.h>
#include <powerpc/booke/cpuvar.h>
#include <powerpc/booke/e500var.h>
#include <powerpc/booke/e500reg.h>
void
e500_device_register(device_t dev, void *aux)
{
}
/*
* Let's see if the DEVDISR bit encoded in the low 6 bits of cnl_flags is
* set. If it is, the device is disabled.
*/
bool
e500_device_disabled_p(uint32_t flags)
{
if ((flags-- & 63) == 0)
return false;
const uint32_t v = cpu_read_4(GLOBAL_BASE + DEVDISR);
return (v & (1 << (flags & 31))) != 0;
}
uint16_t
e500_get_svr(void)
{
uint32_t svr = (mfspr(SPR_SVR) >> 16) & ~8;
switch (svr) {
case SVR_MPC8543v1 >> 16:
return SVR_MPC8548v1 >> 16;
case SVR_MPC8541v1 >> 16:
return SVR_MPC8555v1 >> 16;
default:
return svr;
}
}
u_int
e500_truth_decode(u_int instance, uint32_t data,
const struct e500_truthtab *tab, size_t ntab, u_int default_value)
{
const uint16_t svr = e500_get_svr();
for (u_int i = ntab; i-- > 0; tab++) {
#if 0
printf("%s: [%u] = %x/%x %u/%u (%#x & %#x) = %#x (%#x)\n",
__func__, i, tab->tt_svrhi, svr,
tab->tt_instance, instance,
data, tab->tt_mask, data & tab->tt_mask, tab->tt_value);
#endif
if (tab->tt_svrhi == svr
&& tab->tt_instance == instance
&& (data & tab->tt_mask) == tab->tt_value)
return tab->tt_result;
}
return default_value;
}
int
e500_cpunode_submatch(device_t parent, cfdata_t cf, const char *name, void *aux)
{
struct cpunode_softc * const psc = device_private(parent);
struct cpunode_attach_args * const cna = aux;
struct cpunode_locators * const cnl = &cna->cna_locs;
if (!board_info_get_bool("pq3")
|| strcmp(cnl->cnl_name, name) != 0
|| e500_device_disabled_p(cnl->cnl_flags)
|| (cna->cna_childmask & psc->sc_children)
|| (cf->cf_loc[CPUNODECF_INSTANCE] != CPUNODECF_INSTANCE_DEFAULT
&& cf->cf_loc[CPUNODECF_INSTANCE] != cnl->cnl_instance))
return 0;
return 1;
}
