48 static void sifive_e_aon_wdt_update_wdogcount(SiFiveEAONState *r)  in sifive_e_aon_wdt_update_wdogcount()  argument
51     if (FIELD_EX32(r->wdogcfg, AON_WDT_WDOGCFG, EN_ALWAYS) == 0 &&  in sifive_e_aon_wdt_update_wdogcount()
52         FIELD_EX32(r->wdogcfg, AON_WDT_WDOGCFG, EN_CORE_AWAKE) == 0) {  in sifive_e_aon_wdt_update_wdogcount()
57     r->wdogcount += muldiv64(now - r->wdog_restart_time,  in sifive_e_aon_wdt_update_wdogcount()
58                              r->wdogclk_freq, NANOSECONDS_PER_SECOND);  in sifive_e_aon_wdt_update_wdogcount()
61     r->wdogcount &= R_AON_WDT_WDOGCOUNT_VALUE_MASK;  in sifive_e_aon_wdt_update_wdogcount()
62     r->wdog_restart_time = now;  in sifive_e_aon_wdt_update_wdogcount()
65 static void sifive_e_aon_wdt_update_state(SiFiveEAONState *r)  in sifive_e_aon_wdt_update_state()  argument
69     sifive_e_aon_wdt_update_wdogcount(r);  in sifive_e_aon_wdt_update_state()
70     wdogs = (uint16_t)(r->wdogcount >>  in sifive_e_aon_wdt_update_state()
71                            FIELD_EX32(r->wdogcfg, AON_WDT_WDOGCFG, SCALE));  in sifive_e_aon_wdt_update_state()
73     if (wdogs >= r->wdogcmp0) {  in sifive_e_aon_wdt_update_state()
75         if (FIELD_EX32(r->wdogcfg, AON_WDT_WDOGCFG, ZEROCMP) == 1) {  in sifive_e_aon_wdt_update_state()
76             r->wdogcount = 0;  in sifive_e_aon_wdt_update_state()
82         if (FIELD_EX32(r->wdogcfg, AON_WDT_WDOGCFG, RSTEN) == 1) {  in sifive_e_aon_wdt_update_state()
85         r->wdogcfg = FIELD_DP32(r->wdogcfg, AON_WDT_WDOGCFG, IP0, 1);  in sifive_e_aon_wdt_update_state()
88     qemu_set_irq(r->wdog_irq, FIELD_EX32(r->wdogcfg, AON_WDT_WDOGCFG, IP0));  in sifive_e_aon_wdt_update_state()
90     if (wdogs < r->wdogcmp0 &&  in sifive_e_aon_wdt_update_state()
91         (FIELD_EX32(r->wdogcfg, AON_WDT_WDOGCFG, EN_ALWAYS) == 1 ||  in sifive_e_aon_wdt_update_state()
92          FIELD_EX32(r->wdogcfg, AON_WDT_WDOGCFG, EN_CORE_AWAKE) == 1)) {  in sifive_e_aon_wdt_update_state()
94         next += muldiv64((r->wdogcmp0 - wdogs) <<  in sifive_e_aon_wdt_update_state()
95                          FIELD_EX32(r->wdogcfg, AON_WDT_WDOGCFG, SCALE),  in sifive_e_aon_wdt_update_state()
96                          NANOSECONDS_PER_SECOND, r->wdogclk_freq);  in sifive_e_aon_wdt_update_state()
97         timer_mod(r->wdog_timer, next);  in sifive_e_aon_wdt_update_state()
99         timer_mod(r->wdog_timer, INT64_MAX);  in sifive_e_aon_wdt_update_state()
108     SiFiveEAONState *r = SIFIVE_E_AON(opaque);  in sifive_e_aon_wdt_expired_cb()  local
109     sifive_e_aon_wdt_update_state(r);  in sifive_e_aon_wdt_expired_cb()
115     SiFiveEAONState *r = SIFIVE_E_AON(opaque);  in sifive_e_aon_wdt_read()  local
119         return r->wdogcfg;  in sifive_e_aon_wdt_read()
121         sifive_e_aon_wdt_update_wdogcount(r);  in sifive_e_aon_wdt_read()
122         return r->wdogcount;  in sifive_e_aon_wdt_read()
124         sifive_e_aon_wdt_update_wdogcount(r);  in sifive_e_aon_wdt_read()
125         return r->wdogcount >>  in sifive_e_aon_wdt_read()
126                FIELD_EX32(r->wdogcfg,  in sifive_e_aon_wdt_read()
132         return r->wdogunlock;  in sifive_e_aon_wdt_read()
134         return r->wdogcmp0;  in sifive_e_aon_wdt_read()
147     SiFiveEAONState *r = SIFIVE_E_AON(opaque);  in sifive_e_aon_wdt_write()  local
156         if (r->wdogunlock == 0) {  in sifive_e_aon_wdt_write()
162         old_en_always = FIELD_EX32(r->wdogcfg, AON_WDT_WDOGCFG, EN_ALWAYS);  in sifive_e_aon_wdt_write()
163         old_en_core_awake = FIELD_EX32(r->wdogcfg, AON_WDT_WDOGCFG,  in sifive_e_aon_wdt_write()
170             sifive_e_aon_wdt_update_wdogcount(r);  in sifive_e_aon_wdt_write()
175             r->wdog_restart_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);  in sifive_e_aon_wdt_write()
177         r->wdogcfg = value;  in sifive_e_aon_wdt_write()
178         r->wdogunlock = 0;  in sifive_e_aon_wdt_write()
182         if (r->wdogunlock == 0) {  in sifive_e_aon_wdt_write()
185         r->wdogcount = value & R_AON_WDT_WDOGCOUNT_VALUE_MASK;  in sifive_e_aon_wdt_write()
186         r->wdog_restart_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);  in sifive_e_aon_wdt_write()
187         r->wdogunlock = 0;  in sifive_e_aon_wdt_write()
192         if (r->wdogunlock == 0) {  in sifive_e_aon_wdt_write()
196             r->wdogcount = 0;  in sifive_e_aon_wdt_write()
197             r->wdog_restart_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);  in sifive_e_aon_wdt_write()
199         r->wdogunlock = 0;  in sifive_e_aon_wdt_write()
203             r->wdogunlock = 1;  in sifive_e_aon_wdt_write()
207         if (r->wdogunlock == 0) {  in sifive_e_aon_wdt_write()
210         r->wdogcmp0 = (uint16_t) value;  in sifive_e_aon_wdt_write()
211         r->wdogunlock = 0;  in sifive_e_aon_wdt_write()
217     sifive_e_aon_wdt_update_state(r);  in sifive_e_aon_wdt_write()
266     SiFiveEAONState *r = SIFIVE_E_AON(dev);  in sifive_e_aon_reset()  local
268     r->wdogcfg = FIELD_DP32(r->wdogcfg, AON_WDT_WDOGCFG, RSTEN, 0);  in sifive_e_aon_reset()
269     r->wdogcfg = FIELD_DP32(r->wdogcfg, AON_WDT_WDOGCFG, EN_ALWAYS, 0);  in sifive_e_aon_reset()
270     r->wdogcfg = FIELD_DP32(r->wdogcfg, AON_WDT_WDOGCFG, EN_CORE_AWAKE, 0);  in sifive_e_aon_reset()
271     r->wdogcmp0 = 0xbeef;  in sifive_e_aon_reset()
273     sifive_e_aon_wdt_update_state(r);  in sifive_e_aon_reset()
279     SiFiveEAONState *r = SIFIVE_E_AON(obj);  in sifive_e_aon_init()  local
281     memory_region_init_io(&r->mmio, OBJECT(r), &sifive_e_aon_ops, r,  in sifive_e_aon_init()
283     sysbus_init_mmio(sbd, &r->mmio);  in sifive_e_aon_init()
286     r->wdog_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,  in sifive_e_aon_init()
287                                  sifive_e_aon_wdt_expired_cb, r);  in sifive_e_aon_init()
288     r->wdogclk_freq = SIFIVE_E_LFCLK_DEFAULT_FREQ;  in sifive_e_aon_init()
289     sysbus_init_irq(sbd, &r->wdog_irq);  in sifive_e_aon_init()