4  * Copyright GreenSocs 2016-2020
11  * See the COPYING file in the top-level directory.
21 #define CLOCK_PATH(_clk) (_clk->canonical_path)
23 void clock_setup_canonical_path(Clock *clk)  in clock_setup_canonical_path()  argument
25     g_free(clk->canonical_path);  in clock_setup_canonical_path()
26     clk->canonical_path = object_get_canonical_path(OBJECT(clk));  in clock_setup_canonical_path()
29 Clock *clock_new(Object *parent, const char *name)  in clock_new()  argument
32     Clock *clk;  in clock_new()  local
35     object_property_add_child(parent, name, obj);  in clock_new()
38     clk = CLOCK(obj);  in clock_new()
39     clock_setup_canonical_path(clk);  in clock_new()
41     return clk;  in clock_new()
44 void clock_set_callback(Clock *clk, ClockCallback *cb, void *opaque,  in clock_set_callback()  argument
47     assert(OBJECT(clk)->parent);  in clock_set_callback()
48     clk->callback = cb;  in clock_set_callback()
49     clk->callback_opaque = opaque;  in clock_set_callback()
50     clk->callback_events = events;  in clock_set_callback()
53 bool clock_set(Clock *clk, uint64_t period)  in clock_set()  argument
55     if (clk->period == period) {  in clock_set()
58     trace_clock_set(CLOCK_PATH(clk), CLOCK_PERIOD_TO_HZ(clk->period),  in clock_set()
60     clk->period = period;  in clock_set()
65 static uint64_t clock_get_child_period(Clock *clk)  in clock_get_child_period()  argument
68      * Return the period to be used for child clocks, which is the parent  in clock_get_child_period()
71     return muldiv64(clk->period, clk->multiplier, clk->divider);  in clock_get_child_period()
74 static void clock_call_callback(Clock *clk, ClockEvent event)  in clock_call_callback()  argument
80     if (clk->callback && (clk->callback_events & event)) {  in clock_call_callback()
81         clk->callback(clk->callback_opaque, event);  in clock_call_callback()
85 static void clock_propagate_period(Clock *clk, bool call_callbacks)  in clock_propagate_period()  argument
88     uint64_t child_period = clock_get_child_period(clk);  in clock_propagate_period()
90     QLIST_FOREACH(child, &clk->children, sibling) {  in clock_propagate_period()
91         if (child->period != child_period) {  in clock_propagate_period()
95             child->period = child_period;  in clock_propagate_period()
96             trace_clock_update(CLOCK_PATH(child), CLOCK_PATH(clk),  in clock_propagate_period()
97                                CLOCK_PERIOD_TO_HZ(child->period),  in clock_propagate_period()
107 void clock_propagate(Clock *clk)  in clock_propagate()  argument
109     trace_clock_propagate(CLOCK_PATH(clk));  in clock_propagate()
110     clock_propagate_period(clk, true);  in clock_propagate()
113 void clock_set_source(Clock *clk, Clock *src)  in clock_set_source()  argument
116     assert(!clk->source);  in clock_set_source()
118     trace_clock_set_source(CLOCK_PATH(clk), CLOCK_PATH(src));  in clock_set_source()
120     clk->period = clock_get_child_period(src);  in clock_set_source()
121     QLIST_INSERT_HEAD(&src->children, clk, sibling);  in clock_set_source()
122     clk->source = src;  in clock_set_source()
123     clock_propagate_period(clk, false);  in clock_set_source()
126 static void clock_disconnect(Clock *clk)  in clock_disconnect()  argument
128     if (clk->source == NULL) {  in clock_disconnect()
132     trace_clock_disconnect(CLOCK_PATH(clk));  in clock_disconnect()
134     clk->source = NULL;  in clock_disconnect()
135     QLIST_REMOVE(clk, sibling);  in clock_disconnect()
138 char *clock_display_freq(Clock *clk)  in clock_display_freq()  argument
140     return freq_to_str(clock_get_hz(clk));  in clock_display_freq()
143 bool clock_set_mul_div(Clock *clk, uint32_t multiplier, uint32_t divider)  in clock_set_mul_div()  argument
147     if (clk->multiplier == multiplier && clk->divider == divider) {  in clock_set_mul_div()
151     trace_clock_set_mul_div(CLOCK_PATH(clk), clk->multiplier, multiplier,  in clock_set_mul_div()
152                             clk->divider, divider);  in clock_set_mul_div()
153     clk->multiplier = multiplier;  in clock_set_mul_div()
154     clk->divider = divider;  in clock_set_mul_div()
162     Clock *clk = CLOCK(obj);  in clock_period_prop_get()  local
163     uint64_t period = clock_get(clk);  in clock_period_prop_get()
170      * Callback are registered by the parent, which might die anytime after  in clock_unparent()
180     Clock *clk = CLOCK(obj);  in clock_initfn()  local
182     clk->multiplier = 1;  in clock_initfn()
183     clk->divider = 1;  in clock_initfn()
185     QLIST_INIT(&clk->children);  in clock_initfn()
188         object_property_add(obj, "qtest-clock-period", "uint64",  in clock_initfn()
195     Clock *clk = CLOCK(obj);  in clock_finalizefn()  local
199     QLIST_FOREACH_SAFE(child, &clk->children, sibling, next) {  in clock_finalizefn()
204     clock_disconnect(clk);  in clock_finalizefn()
206     g_free(clk->canonical_path);  in clock_finalizefn()
211     klass->unparent = clock_unparent;  in clock_class_init()
216     .parent            = TYPE_OBJECT,