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      1  1.2  matt /*	$NetBSD: e500_autoconf.c,v 1.2 2011/01/18 01:02:52 matt Exp $	*/
      2  1.2  matt 
      3  1.2  matt /*-
      4  1.2  matt  * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
      5  1.2  matt  * All rights reserved.
      6  1.2  matt  *
      7  1.2  matt  * This code is derived from software contributed to The NetBSD Foundation
      8  1.2  matt  * by Raytheon BBN Technologies Corp and Defense Advanced Research Projects
      9  1.2  matt  * Agency and which was developed by Matt Thomas of 3am Software Foundry.
     10  1.2  matt  *
     11  1.2  matt  * This material is based upon work supported by the Defense Advanced Research
     12  1.2  matt  * Projects Agency and Space and Naval Warfare Systems Center, Pacific, under
     13  1.2  matt  * Contract No. N66001-09-C-2073.
     14  1.2  matt  * Approved for Public Release, Distribution Unlimited
     15  1.2  matt  *
     16  1.2  matt  * Redistribution and use in source and binary forms, with or without
     17  1.2  matt  * modification, are permitted provided that the following conditions
     18  1.2  matt  * are met:
     19  1.2  matt  * 1. Redistributions of source code must retain the above copyright
     20  1.2  matt  *    notice, this list of conditions and the following disclaimer.
     21  1.2  matt  * 2. Redistributions in binary form must reproduce the above copyright
     22  1.2  matt  *    notice, this list of conditions and the following disclaimer in the
     23  1.2  matt  *    documentation and/or other materials provided with the distribution.
     24  1.2  matt  *
     25  1.2  matt  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     26  1.2  matt  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  1.2  matt  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  1.2  matt  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     29  1.2  matt  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  1.2  matt  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  1.2  matt  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  1.2  matt  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  1.2  matt  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  1.2  matt  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  1.2  matt  * POSSIBILITY OF SUCH DAMAGE.
     36  1.2  matt  */
     37  1.2  matt 
     38  1.2  matt #include <sys/cdefs.h>
     39  1.2  matt __KERNEL_RCSID(0, "$NetBSD: e500_autoconf.c,v 1.2 2011/01/18 01:02:52 matt Exp $");
     40  1.2  matt 
     41  1.2  matt #include <sys/param.h>
     42  1.2  matt #include <sys/cpu.h>
     43  1.2  matt #include <sys/conf.h>
     44  1.2  matt #include <sys/device.h>
     45  1.2  matt #include <sys/systm.h>
     46  1.2  matt 
     47  1.2  matt #include <net/if.h>
     48  1.2  matt #include <net/if_ether.h>
     49  1.2  matt 
     50  1.2  matt #define	GLOBAL_PRIVATE
     51  1.2  matt 
     52  1.2  matt #include <powerpc/spr.h>
     53  1.2  matt #include <powerpc/booke/spr.h>
     54  1.2  matt 
     55  1.2  matt #include <powerpc/booke/cpuvar.h>
     56  1.2  matt #include <powerpc/booke/e500var.h>
     57  1.2  matt #include <powerpc/booke/e500reg.h>
     58  1.2  matt 
     59  1.2  matt void
     60  1.2  matt e500_device_register(device_t dev, void *aux)
     61  1.2  matt {
     62  1.2  matt }
     63  1.2  matt 
     64  1.2  matt /*
     65  1.2  matt  * Let's see if the DEVDISR bit encoded in the low 6 bits of cnl_flags is
     66  1.2  matt  * set.  If it is, the device is disabled.
     67  1.2  matt  */
     68  1.2  matt bool
     69  1.2  matt e500_device_disabled_p(uint32_t flags)
     70  1.2  matt {
     71  1.2  matt 	if ((flags-- & 63) == 0)
     72  1.2  matt 		return false;
     73  1.2  matt 
     74  1.2  matt 	const uint32_t v = cpu_read_4(GLOBAL_BASE + DEVDISR);
     75  1.2  matt 	return (v & (1 << (flags & 31))) != 0;
     76  1.2  matt }
     77  1.2  matt 
     78  1.2  matt uint16_t
     79  1.2  matt e500_get_svr(void)
     80  1.2  matt {
     81  1.2  matt 	uint32_t svr = (mfspr(SPR_SVR) >> 16) & ~8;
     82  1.2  matt 
     83  1.2  matt 	switch (svr) {
     84  1.2  matt 	case SVR_MPC8543v1 >> 16:
     85  1.2  matt 		return SVR_MPC8548v1 >> 16;
     86  1.2  matt 	case SVR_MPC8541v1 >> 16:
     87  1.2  matt 		return SVR_MPC8555v1 >> 16;
     88  1.2  matt 	default:
     89  1.2  matt 		return svr;
     90  1.2  matt 	}
     91  1.2  matt }
     92  1.2  matt 
     93  1.2  matt u_int
     94  1.2  matt e500_truth_decode(u_int instance, uint32_t data,
     95  1.2  matt 	const struct e500_truthtab *tab, size_t ntab, u_int default_value)
     96  1.2  matt {
     97  1.2  matt 	const uint16_t svr = e500_get_svr();
     98  1.2  matt 
     99  1.2  matt 	for (u_int i = ntab; i-- > 0; tab++) {
    100  1.2  matt #if 0
    101  1.2  matt 		printf("%s: [%u] = %x/%x %u/%u (%#x & %#x) = %#x (%#x)\n",
    102  1.2  matt 		    __func__, i, tab->tt_svrhi, svr,
    103  1.2  matt 		    tab->tt_instance, instance,
    104  1.2  matt 		    data, tab->tt_mask, data & tab->tt_mask, tab->tt_value);
    105  1.2  matt #endif
    106  1.2  matt 		if (tab->tt_svrhi == svr
    107  1.2  matt 		    && tab->tt_instance == instance
    108  1.2  matt 		    && (data & tab->tt_mask) == tab->tt_value)
    109  1.2  matt 			return tab->tt_result;
    110  1.2  matt 	}
    111  1.2  matt 	return default_value;
    112  1.2  matt }
    113  1.2  matt 
    114  1.2  matt int
    115  1.2  matt e500_cpunode_submatch(device_t parent, cfdata_t cf, const char *name, void *aux)
    116  1.2  matt {
    117  1.2  matt 	struct cpunode_softc * const psc = device_private(parent);
    118  1.2  matt 	struct cpunode_attach_args * const cna = aux;
    119  1.2  matt 	struct cpunode_locators * const cnl = &cna->cna_locs;
    120  1.2  matt 
    121  1.2  matt 	if (!board_info_get_bool("pq3")
    122  1.2  matt 	    || strcmp(cnl->cnl_name, name) != 0
    123  1.2  matt 	    || e500_device_disabled_p(cnl->cnl_flags)
    124  1.2  matt 	    || (cna->cna_childmask & psc->sc_children)
    125  1.2  matt 	    || (cf->cf_loc[CPUNODECF_INSTANCE] != CPUNODECF_INSTANCE_DEFAULT
    126  1.2  matt 		&& cf->cf_loc[CPUNODECF_INSTANCE] != cnl->cnl_instance))
    127  1.2  matt 		return 0;
    128  1.2  matt 
    129  1.2  matt 	return 1;
    130  1.2  matt }
    131