1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
11  * 1. Redistributions of source code must retain the above copyright
55 #define		TIMER_CONTROL_EN	(1 << 7)
57 #define		TIMER_CONTROL_PERIODIC	(1 << 6)
58 #define		TIMER_CONTROL_INTREN	(1 << 5)
60 #define		TIMER_CONTROL_DIV16	(1 << 2)
62 #define		TIMER_CONTROL_32BIT	(1 << 1)
63 #define		TIMER_CONTROL_ONESHOT	(1 << 0)
87  * QEMU seems to have problem with full frequency
107 	bus_space_read_4(sc->bst, sc->bsh, reg)
110 	bus_space_write_4(sc->bst, sc->bsh, reg, val)
118 	struct sp804_timer_softc *sc = tc->tc_priv;  in sp804_timer_tc_get_timecount()
119 	return 0xffffffff - sp804_timer_tc_read_4(SP804_TIMER1_VALUE);  in sp804_timer_tc_get_timecount()
125 	struct sp804_timer_softc *sc = et->et_priv;  in sp804_timer_start()
129 		sc->et_enabled = 1;  in sp804_timer_start()
131 		count = ((uint32_t)et->et_frequency * first) >> 32;  in sp804_timer_start()
152 	struct sp804_timer_softc *sc = et->et_priv;  in sp804_timer_stop()
155 	sc->et_enabled = 0;  in sp804_timer_stop()
170 	sp804_timer_tc_write_4(SP804_TIMER2_INTCLR, 1);  in sp804_timer_intr()
171 	if (sc->et_enabled) {  in sp804_timer_intr()
172 		if (sc->et.et_active) {  in sp804_timer_intr()
173 			sc->et.et_event_cb(&sc->et, sc->et.et_arg);  in sp804_timer_intr()
205 	sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);  in sp804_timer_attach()
206 	if (sc->mem_res == NULL) {  in sp804_timer_attach()
211 	sc->bst = rman_get_bustag(sc->mem_res);  in sp804_timer_attach()
212 	sc->bsh = rman_get_bushandle(sc->mem_res);  in sp804_timer_attach()
215 	sc->irq_res =  bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);  in sp804_timer_attach()
216 	if (sc->irq_res == NULL) {  in sp804_timer_attach()
221 	sc->sysclk_freq = DEFAULT_FREQUENCY;  in sp804_timer_attach()
224 	if ((OF_getencprop(node, "clock-frequency", &clock, sizeof(clock))) > 0) {  in sp804_timer_attach()
225 		sc->sysclk_freq = clock;  in sp804_timer_attach()
228 	/* Setup and enable the timer */  in sp804_timer_attach()
229 	if (bus_setup_intr(dev, sc->irq_res, INTR_TYPE_CLK,  in sp804_timer_attach()
231 			&sc->intr_hl) != 0) {  in sp804_timer_attach()
233 			sc->irq_res);  in sp804_timer_attach()
234 		device_printf(dev, "Unable to setup the clock irq handler.\n");  in sp804_timer_attach()
242 	 * Timer 1, timecounter  in sp804_timer_attach()
244 	sc->tc.tc_frequency = sc->sysclk_freq;  in sp804_timer_attach()
245 	sc->tc.tc_name = "SP804-1";  in sp804_timer_attach()
246 	sc->tc.tc_get_timecount = sp804_timer_tc_get_timecount;  in sp804_timer_attach()
247 	sc->tc.tc_poll_pps = NULL;  in sp804_timer_attach()
248 	sc->tc.tc_counter_mask = ~0u;  in sp804_timer_attach()
249 	sc->tc.tc_quality = 1000;  in sp804_timer_attach()
250 	sc->tc.tc_priv = sc;  in sp804_timer_attach()
258 	tc_init(&sc->tc);  in sp804_timer_attach()
263 	sc->et_enabled = 0;  in sp804_timer_attach()
264 	sc->et.et_name = "SP804-2";  in sp804_timer_attach()
265 	sc->et.et_flags = ET_FLAGS_PERIODIC | ET_FLAGS_ONESHOT;  in sp804_timer_attach()
266 	sc->et.et_quality = 1000;  in sp804_timer_attach()
267 	sc->et.et_frequency = sc->sysclk_freq / DEFAULT_DIVISOR;  in sp804_timer_attach()
268 	sc->et.et_min_period = (0x00000002LLU << 32) / sc->et.et_frequency;  in sp804_timer_attach()
269 	sc->et.et_max_period = (0xfffffffeLLU << 32) / sc->et.et_frequency;  in sp804_timer_attach()
270 	sc->et.et_start = sp804_timer_start;  in sp804_timer_attach()
271 	sc->et.et_stop = sp804_timer_stop;  in sp804_timer_attach()
272 	sc->et.et_priv = sc;  in sp804_timer_attach()
273 	et_register(&sc->et);  in sp804_timer_attach()
276 	for (i = 3; i >= 0; i--) {  in sp804_timer_attach()
284 	for (i = 3; i >= 0; i--) {  in sp804_timer_attach()
293 	sc->timer_initialized = 1;  in sp804_timer_attach()
320 	counts = usec * ((sc->tc.tc_frequency / 1000000) + 1);  in sp804_timer_delay()
322 	first = sp804_timer_tc_get_timecount(&sc->tc);  in sp804_timer_delay()
325 		last = sp804_timer_tc_get_timecount(&sc->tc);  in sp804_timer_delay()
329 			counts -= (int32_t)(last - first);  in sp804_timer_delay()
331 			counts -= (int32_t)((0xFFFFFFFF - first) + last);  in sp804_timer_delay()