Subversion Repositories HelenOS

Rev

Rev 3424 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3424 Rev 3675
Line 33... Line 33...
33 
 */
 33 
 */
34 
 
 34 
 
35 
#include <smp/smp.h>
 35 
#include <smp/smp.h>
36 
#include <genarch/ofw/ofw_tree.h>
 36 
#include <genarch/ofw/ofw_tree.h>
37 
#include <cpu.h>
 37 
#include <cpu.h>
- 
 
 38 
#include <arch/cpu_family.h>
38 
#include <arch/cpu.h>
 39 
#include <arch/cpu.h>
39 
#include <arch.h>
 40 
#include <arch.h>
40 
#include <config.h>
 41 
#include <config.h>
41 
#include <macros.h>
 42 
#include <macros.h>
42 
#include <arch/types.h>
 43 
#include <arch/types.h>
43 
#include <synch/synch.h>
 44 
#include <synch/synch.h>
44 
#include <synch/waitq.h>
 45 
#include <synch/waitq.h>
45 
#include <print.h>
 46 
#include <print.h>
- 
 
 47 
#include <arch/cpu_node.h>
46 
 
 48 
 
47 
/**
 49 
/**
48 
 * This global variable is used to pick-up application processors
 50 
 * This global variable is used to pick-up application processors
49 
 * from their active loop in start.S. When a processor looping in
 51 
 * from their active loop in start.S. When a processor looping in
50 
 * start.S sees that this variable contains its MID, it can
 52 
 * start.S sees that this variable contains its MID, it can
Line 59... Line 61...
59 
void smp_init(void)
 61 
void smp_init(void)
60 
{
 62 
{
61 
    ofw_tree_node_t *node;
 63 
    ofw_tree_node_t *node;
62 
    count_t cnt = 0;
 64 
    count_t cnt = 0;
63 
   
 65 
   
- 
 
 66 
    if (is_us() || is_us_iii()) {
64 
    node = ofw_tree_find_child_by_device_type(ofw_tree_lookup("/"), "cpu");
 67 
        node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu");
65 
    while (node) {
 68 
        while (node) {
66 
        cnt++;
 69 
            cnt++;
67 
        node = ofw_tree_find_peer_by_device_type(node, "cpu");
 70 
            node = ofw_tree_find_peer_by_device_type(node, "cpu");
- 
 
 71 
        }
- 
 
 72 
    } else if (is_us_iv()) {
- 
 
 73 
        node = ofw_tree_find_child(cpus_parent(), "cmp");
- 
 
 74 
        while (node) {
- 
 
 75 
            cnt += 2;
- 
 
 76 
            node = ofw_tree_find_peer_by_name(node, "cmp");
- 
 
 77 
        }
68 
    }
 78 
    }
69 
   
 79 
   
70 
    config.cpu_count = max(1, cnt);
 80 
    config.cpu_count = max(1, cnt);
71 
}
 81 
}
72 
 
 82 
 
- 
 
 83 
/**
- 
 
 84 
 * Wakes up the CPU which is represented by the "node" OFW tree node.
- 
 
 85 
 * If "node" represents the current CPU, calling the function has
- 
 
 86 
 * no effect.
- 
 
 87 
 */
- 
 
 88 
static void wakeup_cpu(ofw_tree_node_t *node)
- 
 
 89 
{
- 
 
 90 
    uint32_t mid;
- 
 
 91 
    ofw_tree_property_t *prop;
- 
 
 92 
       
- 
 
 93 
    /* 'upa-portid' for US, 'portid' for US-III, 'cpuid' for US-IV */
- 
 
 94 
    prop = ofw_tree_getprop(node, "upa-portid");
- 
 
 95 
    if ((!prop) || (!prop->value))
- 
 
 96 
        prop = ofw_tree_getprop(node, "portid");
- 
 
 97 
    if ((!prop) || (!prop->value))
- 
 
 98 
        prop = ofw_tree_getprop(node, "cpuid");
- 
 
 99 
       
- 
 
 100 
    if (!prop || prop->value == NULL)
- 
 
 101 
        return;
- 
 
 102 
       
- 
 
 103 
    mid = *((uint32_t *) prop->value);
- 
 
 104 
    if (CPU->arch.mid == mid)
- 
 
 105 
        return;
- 
 
 106 
 
- 
 
 107 
    waking_up_mid = mid;
- 
 
 108 
       
- 
 
 109 
    if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_FLAGS_NONE) ==
- 
 
 110 
        ESYNCH_TIMEOUT)
- 
 
 111 
        printf("%s: waiting for processor (mid = %" PRIu32
- 
 
 112 
            ") timed out\n", __func__, mid);
- 
 
 113 
}
- 
 
 114 
 
73 
/** Wake application processors up. */
 115 
/** Wake application processors up. */
74 
void kmp(void *arg)
 116 
void kmp(void *arg)
75 
{
 117 
{
76 
    ofw_tree_node_t *node;
 118 
    ofw_tree_node_t *node;
77 
    int i;
 119 
    int i;
78 
   
 120 
   
- 
 
 121 
    if (is_us() || is_us_iii()) {
79 
    node = ofw_tree_find_child_by_device_type(ofw_tree_lookup("/"), "cpu");
 122 
        node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu");
- 
 
 123 
        for (i = 0; node;
80 
    for (i = 0; node; node = ofw_tree_find_peer_by_device_type(node, "cpu"), i++) {
 124 
                     node = ofw_tree_find_peer_by_device_type(node, "cpu"), i++)
81 
        uint32_t mid;
 125 
            wakeup_cpu(node);
82 
        ofw_tree_property_t *prop;
 126 
    } else if (is_us_iv()) {
83 
       
 - 
 
84 
        prop = ofw_tree_getprop(node, "upa-portid");
 127 
        node = ofw_tree_find_child(cpus_parent(), "cmp");
85 
        if (!prop || !prop->value)
 - 
 
86 
            continue;
 128 
        while (node) {
87 
       
 - 
 
88 
        mid = *((uint32_t *) prop->value);
 129 
            wakeup_cpu(ofw_tree_find_child(node, "cpu@0"));
89 
        if (CPU->arch.mid == mid) {
 130 
            wakeup_cpu(ofw_tree_find_child(node, "cpu@1"));
90 
            /*
 - 
 
91 
             * Skip the current CPU.
 131 
            node = ofw_tree_find_peer_by_name(node, "cmp");
92 
             */
 - 
 
93 
            continue;
 - 
 
94 
        }
 132 
        }
95 
 
 - 
 
96 
        /*
 - 
 
97 
         * Processor with ID == mid can proceed with its initialization.
 - 
 
98 
         */
 - 
 
99 
        waking_up_mid = mid;
 - 
 
100 
       
 - 
 
101 
        if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_FLAGS_NONE) == ESYNCH_TIMEOUT)
 - 
 
102 
            printf("%s: waiting for processor (mid = %" PRIu32 ") timed out\n",
 - 
 
103 
                __func__, mid);
 - 
 
104 
    }
 133 
    }
105 
}
 134 
}
106 
 
 135 
 
107 
/** @}
 136 
/** @}
108 
 */
 137 
 */