131 lines
4.1 KiB
C
131 lines
4.1 KiB
C
/* $NetBSD: e500_autoconf.c,v 1.2 2011/01/18 01:02:52 matt Exp $ */
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/*-
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* Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Raytheon BBN Technologies Corp and Defense Advanced Research Projects
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* Agency and which was developed by Matt Thomas of 3am Software Foundry.
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*
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* This material is based upon work supported by the Defense Advanced Research
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* Projects Agency and Space and Naval Warfare Systems Center, Pacific, under
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* Contract No. N66001-09-C-2073.
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* Approved for Public Release, Distribution Unlimited
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: e500_autoconf.c,v 1.2 2011/01/18 01:02:52 matt Exp $");
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#include <sys/param.h>
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#include <sys/cpu.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#define GLOBAL_PRIVATE
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#include <powerpc/spr.h>
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#include <powerpc/booke/spr.h>
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#include <powerpc/booke/cpuvar.h>
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#include <powerpc/booke/e500var.h>
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#include <powerpc/booke/e500reg.h>
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void
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e500_device_register(device_t dev, void *aux)
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{
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}
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/*
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* Let's see if the DEVDISR bit encoded in the low 6 bits of cnl_flags is
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* set. If it is, the device is disabled.
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*/
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bool
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e500_device_disabled_p(uint32_t flags)
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{
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if ((flags-- & 63) == 0)
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return false;
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const uint32_t v = cpu_read_4(GLOBAL_BASE + DEVDISR);
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return (v & (1 << (flags & 31))) != 0;
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}
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uint16_t
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e500_get_svr(void)
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{
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uint32_t svr = (mfspr(SPR_SVR) >> 16) & ~8;
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switch (svr) {
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case SVR_MPC8543v1 >> 16:
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return SVR_MPC8548v1 >> 16;
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case SVR_MPC8541v1 >> 16:
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return SVR_MPC8555v1 >> 16;
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default:
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return svr;
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}
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}
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u_int
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e500_truth_decode(u_int instance, uint32_t data,
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const struct e500_truthtab *tab, size_t ntab, u_int default_value)
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{
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const uint16_t svr = e500_get_svr();
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for (u_int i = ntab; i-- > 0; tab++) {
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#if 0
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printf("%s: [%u] = %x/%x %u/%u (%#x & %#x) = %#x (%#x)\n",
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__func__, i, tab->tt_svrhi, svr,
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tab->tt_instance, instance,
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data, tab->tt_mask, data & tab->tt_mask, tab->tt_value);
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#endif
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if (tab->tt_svrhi == svr
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&& tab->tt_instance == instance
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&& (data & tab->tt_mask) == tab->tt_value)
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return tab->tt_result;
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}
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return default_value;
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}
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int
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e500_cpunode_submatch(device_t parent, cfdata_t cf, const char *name, void *aux)
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{
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struct cpunode_softc * const psc = device_private(parent);
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struct cpunode_attach_args * const cna = aux;
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struct cpunode_locators * const cnl = &cna->cna_locs;
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if (!board_info_get_bool("pq3")
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|| strcmp(cnl->cnl_name, name) != 0
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|| e500_device_disabled_p(cnl->cnl_flags)
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|| (cna->cna_childmask & psc->sc_children)
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|| (cf->cf_loc[CPUNODECF_INSTANCE] != CPUNODECF_INSTANCE_DEFAULT
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&& cf->cf_loc[CPUNODECF_INSTANCE] != cnl->cnl_instance))
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return 0;
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return 1;
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}
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