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1 | /* |
1 | /* |
2 | * Copyright (c) 2006 Jakub Jermar |
2 | * Copyright (c) 2006 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup sparc64 |
29 | /** @addtogroup sparc64 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
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_family.h> |
39 | #include <arch/cpu.h> |
39 | #include <arch/cpu.h> |
40 | #include <arch.h> |
40 | #include <arch.h> |
41 | #include <config.h> |
41 | #include <config.h> |
42 | #include <macros.h> |
42 | #include <macros.h> |
43 | #include <arch/types.h> |
43 | #include <arch/types.h> |
44 | #include <synch/synch.h> |
44 | #include <synch/synch.h> |
45 | #include <synch/waitq.h> |
45 | #include <synch/waitq.h> |
46 | #include <print.h> |
46 | #include <print.h> |
47 | #include <arch/cpu_node.h> |
47 | #include <arch/cpu_node.h> |
48 | 48 | ||
49 | /** |
49 | /** |
50 | * This global variable is used to pick-up application processors |
50 | * This global variable is used to pick-up application processors |
51 | * 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 |
52 | * start.S sees that this variable contains its MID, it can |
52 | * start.S sees that this variable contains its MID, it can |
53 | * proceed with its initialization. |
53 | * proceed with its initialization. |
54 | * |
54 | * |
55 | * This variable is modified only by the bootstrap processor. |
55 | * This variable is modified only by the bootstrap processor. |
56 | * Other processors access it read-only. |
56 | * Other processors access it read-only. |
57 | */ |
57 | */ |
58 | volatile uint64_t waking_up_mid = (uint64_t) -1; |
58 | volatile uint64_t waking_up_mid = (uint64_t) -1; |
59 | 59 | ||
60 | /** Determine number of processors. */ |
60 | /** Determine number of processors. */ |
61 | void smp_init(void) |
61 | void smp_init(void) |
62 | { |
62 | { |
63 | ofw_tree_node_t *node; |
63 | ofw_tree_node_t *node; |
64 | count_t cnt = 0; |
64 | size_t cnt = 0; |
65 | 65 | ||
66 | if (is_us() || is_us_iii()) { |
66 | if (is_us() || is_us_iii()) { |
67 | node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu"); |
67 | node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu"); |
68 | while (node) { |
68 | while (node) { |
69 | cnt++; |
69 | cnt++; |
70 | node = ofw_tree_find_peer_by_device_type(node, "cpu"); |
70 | node = ofw_tree_find_peer_by_device_type(node, "cpu"); |
71 | } |
71 | } |
72 | } else if (is_us_iv()) { |
72 | } else if (is_us_iv()) { |
73 | node = ofw_tree_find_child(cpus_parent(), "cmp"); |
73 | node = ofw_tree_find_child(cpus_parent(), "cmp"); |
74 | while (node) { |
74 | while (node) { |
75 | cnt += 2; |
75 | cnt += 2; |
76 | node = ofw_tree_find_peer_by_name(node, "cmp"); |
76 | node = ofw_tree_find_peer_by_name(node, "cmp"); |
77 | } |
77 | } |
78 | } |
78 | } |
79 | 79 | ||
80 | config.cpu_count = max(1, cnt); |
80 | config.cpu_count = max(1, cnt); |
81 | } |
81 | } |
82 | 82 | ||
83 | /** |
83 | /** |
84 | * Wakes up the CPU which is represented by the "node" OFW tree node. |
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 |
85 | * If "node" represents the current CPU, calling the function has |
86 | * no effect. |
86 | * no effect. |
87 | */ |
87 | */ |
88 | static void wakeup_cpu(ofw_tree_node_t *node) |
88 | static void wakeup_cpu(ofw_tree_node_t *node) |
89 | { |
89 | { |
90 | uint32_t mid; |
90 | uint32_t mid; |
91 | ofw_tree_property_t *prop; |
91 | ofw_tree_property_t *prop; |
92 | 92 | ||
93 | /* 'upa-portid' for US, 'portid' for US-III, 'cpuid' for US-IV */ |
93 | /* 'upa-portid' for US, 'portid' for US-III, 'cpuid' for US-IV */ |
94 | prop = ofw_tree_getprop(node, "upa-portid"); |
94 | prop = ofw_tree_getprop(node, "upa-portid"); |
95 | if ((!prop) || (!prop->value)) |
95 | if ((!prop) || (!prop->value)) |
96 | prop = ofw_tree_getprop(node, "portid"); |
96 | prop = ofw_tree_getprop(node, "portid"); |
97 | if ((!prop) || (!prop->value)) |
97 | if ((!prop) || (!prop->value)) |
98 | prop = ofw_tree_getprop(node, "cpuid"); |
98 | prop = ofw_tree_getprop(node, "cpuid"); |
99 | 99 | ||
100 | if (!prop || prop->value == NULL) |
100 | if (!prop || prop->value == NULL) |
101 | return; |
101 | return; |
102 | 102 | ||
103 | mid = *((uint32_t *) prop->value); |
103 | mid = *((uint32_t *) prop->value); |
104 | if (CPU->arch.mid == mid) |
104 | if (CPU->arch.mid == mid) |
105 | return; |
105 | return; |
106 | 106 | ||
107 | waking_up_mid = mid; |
107 | waking_up_mid = mid; |
108 | 108 | ||
109 | if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_FLAGS_NONE) == |
109 | if (waitq_sleep_timeout(&ap_completion_wq, 1000000, SYNCH_FLAGS_NONE) == |
110 | ESYNCH_TIMEOUT) |
110 | ESYNCH_TIMEOUT) |
111 | printf("%s: waiting for processor (mid = %" PRIu32 |
111 | printf("%s: waiting for processor (mid = %" PRIu32 |
112 | ") timed out\n", __func__, mid); |
112 | ") timed out\n", __func__, mid); |
113 | } |
113 | } |
114 | 114 | ||
115 | /** Wake application processors up. */ |
115 | /** Wake application processors up. */ |
116 | void kmp(void *arg) |
116 | void kmp(void *arg) |
117 | { |
117 | { |
118 | ofw_tree_node_t *node; |
118 | ofw_tree_node_t *node; |
119 | int i; |
119 | int i; |
120 | 120 | ||
121 | if (is_us() || is_us_iii()) { |
121 | if (is_us() || is_us_iii()) { |
122 | node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu"); |
122 | node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu"); |
123 | for (i = 0; node; |
123 | for (i = 0; node; |
124 | node = ofw_tree_find_peer_by_device_type(node, "cpu"), i++) |
124 | node = ofw_tree_find_peer_by_device_type(node, "cpu"), i++) |
125 | wakeup_cpu(node); |
125 | wakeup_cpu(node); |
126 | } else if (is_us_iv()) { |
126 | } else if (is_us_iv()) { |
127 | node = ofw_tree_find_child(cpus_parent(), "cmp"); |
127 | node = ofw_tree_find_child(cpus_parent(), "cmp"); |
128 | while (node) { |
128 | while (node) { |
129 | wakeup_cpu(ofw_tree_find_child(node, "cpu@0")); |
129 | wakeup_cpu(ofw_tree_find_child(node, "cpu@0")); |
130 | wakeup_cpu(ofw_tree_find_child(node, "cpu@1")); |
130 | wakeup_cpu(ofw_tree_find_child(node, "cpu@1")); |
131 | node = ofw_tree_find_peer_by_name(node, "cmp"); |
131 | node = ofw_tree_find_peer_by_name(node, "cmp"); |
132 | } |
132 | } |
133 | } |
133 | } |
134 | } |
134 | } |
135 | 135 | ||
136 | /** @} |
136 | /** @} |
137 | */ |
137 | */ |
138 | 138 |