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3771 rimsky 1
/*
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 * Copyright (c) 2005 Jakub Jermar
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 * All rights reserved.
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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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 *
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 * - 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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 * - 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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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup sparc64
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 * @{
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 */
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/** @file
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 */
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4130 rimsky 35
#include <arch/sun4u/cpu_family.h>
3771 rimsky 36
#include <cpu.h>
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#include <arch.h>
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#include <genarch/ofw/ofw_tree.h>
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#include <arch/drivers/tick.h>
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#include <print.h>
4130 rimsky 41
#include <arch/sun4u/cpu_node.h>
3862 rimsky 42
#include <arch/cpu.h>
3771 rimsky 43
 
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/**
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 * Finds out the clock frequency of the current CPU.
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 *
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 * @param node  node representing the current CPU in the OFW tree
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 * @return  clock frequency if "node" is the current CPU and no error
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 *      occurs, -1 if "node" is not the current CPU or on error
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 */
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static int find_cpu_frequency(ofw_tree_node_t *node)
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{
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    ofw_tree_property_t *prop;
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    uint32_t mid;
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    /* 'upa-portid' for US, 'portid' for US-III, 'cpuid' for US-IV */
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    prop = ofw_tree_getprop(node, "upa-portid");
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    if ((!prop) || (!prop->value))
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        prop = ofw_tree_getprop(node, "portid");
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    if ((!prop) || (!prop->value))
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        prop = ofw_tree_getprop(node, "cpuid");
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    if (prop && prop->value) {
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        mid = *((uint32_t *) prop->value);
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        if (mid == CPU->arch.mid) {
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            prop = ofw_tree_getprop(node, "clock-frequency");
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            if (prop && prop->value) {
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                return *((uint32_t *) prop->value);
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            }
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        }
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    }
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    return -1;
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}
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/** Perform sparc64 specific initialization of the processor structure for the
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 * current processor.
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 */
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void cpu_arch_init(void)
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{
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    ofw_tree_node_t *node;
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    uint32_t clock_frequency = 0;
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    CPU->arch.mid = read_mid();
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    /*
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     * Detect processor frequency.
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     */
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    if (is_us() || is_us_iii()) {
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        node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu");
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        while (node) {
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            int f = find_cpu_frequency(node);
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            if (f != -1)
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                clock_frequency = (uint32_t) f;
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            node = ofw_tree_find_peer_by_device_type(node, "cpu");
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        }
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    } else if (is_us_iv()) {
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        node = ofw_tree_find_child(cpus_parent(), "cmp");
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        while (node) {
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            int f;
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            f = find_cpu_frequency(
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                ofw_tree_find_child(node, "cpu@0"));
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            if (f != -1)
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                clock_frequency = (uint32_t) f;
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            f = find_cpu_frequency(
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                ofw_tree_find_child(node, "cpu@1"));
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            if (f != -1)
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                clock_frequency = (uint32_t) f;
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            node = ofw_tree_find_peer_by_name(node, "cmp");
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        }
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    }
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    CPU->arch.clock_frequency = clock_frequency;
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    tick_init();
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}
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/** Read version information from the current processor. */
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void cpu_identify(void)
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{
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    CPU->arch.ver.value = ver_read();
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}
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/** Print version information for a processor.
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 *
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 * This function is called by the bootstrap processor.
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 *
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 * @param m Processor structure of the CPU for which version information is to
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 *  be printed.
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 */
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void cpu_print_report(cpu_t *m)
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{
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    char *manuf, *impl;
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    switch (m->arch.ver.manuf) {
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    case MANUF_FUJITSU:
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        manuf = "Fujitsu";
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        break;
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    case MANUF_ULTRASPARC:
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        manuf = "UltraSPARC";
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        break;
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    case MANUF_SUN:
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            manuf = "Sun";
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        break;
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    default:
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        manuf = "Unknown";
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        break;
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    }
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    switch (CPU->arch.ver.impl) {
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    case IMPL_ULTRASPARCI:
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        impl = "UltraSPARC I";
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        break;
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    case IMPL_ULTRASPARCII:
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        impl = "UltraSPARC II";
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        break;
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    case IMPL_ULTRASPARCII_I:
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        impl = "UltraSPARC IIi";
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        break;
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    case IMPL_ULTRASPARCII_E:
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        impl = "UltraSPARC IIe";
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        break;
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    case IMPL_ULTRASPARCIII:
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        impl = "UltraSPARC III";
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        break;
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    case IMPL_ULTRASPARCIII_PLUS:
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        impl = "UltraSPARC III+";
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        break;
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    case IMPL_ULTRASPARCIII_I:
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        impl = "UltraSPARC IIIi";
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        break;
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    case IMPL_ULTRASPARCIV:
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        impl = "UltraSPARC IV";
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        break;
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    case IMPL_ULTRASPARCIV_PLUS:
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        impl = "UltraSPARC IV+";
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        break;
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    case IMPL_SPARC64V:
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        impl = "SPARC 64V";
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        break;
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    default:
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        impl = "Unknown";
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        break;
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    }
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    printf("cpu%d: manuf=%s, impl=%s, mask=%d (%d MHz)\n", m->id, manuf,
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        impl, m->arch.ver.mask, m->arch.clock_frequency / 1000000);
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}
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/** @}
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 */