2  * Device's clock input and output
4  * Copyright GreenSocs 2016-2020
11  * See the COPYING file in the top-level directory.
15 #include "qemu/error-report.h"
16 #include "hw/qdev-clock.h"
17 #include "hw/qdev-core.h"
22  * Add a new clock in a device
25                                            bool alias, bool output, Clock *clk)  in qdev_init_clocklist()
30      * Clock must be added before realize() so that we can compute the  in qdev_init_clocklist()
31      * clock's canonical path during device_realize().  in qdev_init_clocklist()
33     assert(!dev->realized);  in qdev_init_clocklist()
40     ncl->name = g_strdup(name);  in qdev_init_clocklist()
41     ncl->alias = alias;  in qdev_init_clocklist()
42     ncl->output = output;  in qdev_init_clocklist()
43     ncl->clock = clk;  in qdev_init_clocklist()
45     QLIST_INSERT_HEAD(&dev->clocks, ncl, node);  in qdev_init_clocklist()
54     QLIST_FOREACH_SAFE(ncl, &dev->clocks, node, ncl_next) {  in qdev_finalize_clocklist()
56         if (!ncl->alias) {  in qdev_finalize_clocklist()
58              * We kept a reference on the input clock to ensure it lives up to  in qdev_finalize_clocklist()
59              * this point; it is used by the monitor to show the frequency.  in qdev_finalize_clocklist()
61             object_unref(OBJECT(ncl->clock));  in qdev_finalize_clocklist()
63         g_free(ncl->name);  in qdev_finalize_clocklist()
68 Clock *qdev_init_clock_out(DeviceState *dev, const char *name)  in qdev_init_clock_out()
70     Clock *clk = CLOCK(object_new(TYPE_CLOCK));  in qdev_init_clock_out()
77 Clock *qdev_init_clock_in(DeviceState *dev, const char *name,  in qdev_init_clock_in()
81     Clock *clk = CLOCK(object_new(TYPE_CLOCK));  in qdev_init_clock_in()
95     for (elem = &clocks[0]; elem->name != NULL; elem++) {  in qdev_init_clocks()
96         Clock **clkp;  in qdev_init_clocks()
98         assert(elem->offset > sizeof(DeviceState));  in qdev_init_clocks()
99         clkp = ((void *)dev) + elem->offset;  in qdev_init_clocks()
100         if (elem->is_output) {  in qdev_init_clocks()
101             *clkp = qdev_init_clock_out(dev, elem->name);  in qdev_init_clocks()
103             *clkp = qdev_init_clock_in(dev, elem->name, elem->callback, dev,  in qdev_init_clocks()
104                                        elem->callback_events);  in qdev_init_clocks()
113     QLIST_FOREACH(ncl, &dev->clocks, node) {  in qdev_get_clocklist()
114         if (strcmp(name, ncl->name) == 0) {  in qdev_get_clocklist()
122 Clock *qdev_get_clock_in(DeviceState *dev, const char *name)  in qdev_get_clock_in()
130         error_report("Can not find clock-in '%s' for device type '%s'",  in qdev_get_clock_in()
134     assert(!ncl->output);  in qdev_get_clock_in()
136     return ncl->clock;  in qdev_get_clock_in()
139 Clock *qdev_get_clock_out(DeviceState *dev, const char *name)  in qdev_get_clock_out()
147         error_report("Can not find clock-out '%s' for device type '%s'",  in qdev_get_clock_out()
151     assert(ncl->output);  in qdev_get_clock_out()
153     return ncl->clock;  in qdev_get_clock_out()
156 Clock *qdev_alias_clock(DeviceState *dev, const char *name,  in qdev_alias_clock()
160     Clock *clk = ncl->clock;  in qdev_alias_clock()
162     ncl = qdev_init_clocklist(alias_dev, alias_name, true, ncl->output, clk);  in qdev_alias_clock()
166                              (Object **) &ncl->clock,  in qdev_alias_clock()
173      * aliased clock stays alive during this device life-time.  in qdev_alias_clock()
180 void qdev_connect_clock_in(DeviceState *dev, const char *name, Clock *source)  in qdev_connect_clock_in()
182     assert(!dev->realized);  in qdev_connect_clock_in()