Lines Matching +full:wdt +full:- +full:timer +full:- +full:index

1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
30  * This is a driver for watchdog timer present in AMD SB600/SB7xx/SB8xx
34  * - AMD SB600 Register Reference Guide, Public Version,  Rev. 3.03 (SB600 RRG)
35  *   http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/46155_sb600_rrg_pub_3.03.pdf
36  * - AMD SB700/710/750 Register Reference Guide (RRG)
38  * - AMD SB700/710/750 Register Programming Requirements (RPR)
40  * - AMD SB800-Series Southbridges Register Reference Guide (RRG)
43  * - Watchdog Timer Hardware Requirements for Windows Server 2003 (WDRT)
135 	bus_write_1(res, 0, reg);	/* Index */
142 	bus_write_1(res, 0, reg);	/* Index */
149 	return (bus_read_4(sc->res_ctrl, 0));
155 	bus_write_4(sc->res_ctrl, 0, val);
161 	return (bus_read_4(sc->res_count, 0));
167 	bus_write_4(sc->res_count, 0, val);
178 	sc->active = 1;
179 	amdsbwd_verbose_printf(sc->dev, "timer enabled\n");
190 	sc->active = 0;
191 	amdsbwd_verbose_printf(sc->dev, "timer disabled\n");
210 	sc->timeout = timeout;
211 	amdsbwd_verbose_printf(sc->dev, "timeout set to %u ticks\n", timeout);
224 			timeout = (uint64_t)1 << (cmd - WD_TO_1MS);
225 			timeout = timeout / sc->ms_per_tick;
230 		/* For a too long timeout stop the timer. */
231 		if (timeout > sc->max_ticks)
238 		if (timeout != sc->timeout)
240 		if (!sc->active)
245 		if (sc->active)
258 	if (device_find_child(parent, "amdsbwd", -1) != NULL)
295 	/* Find base address of memory mapped WDT registers. */
298 		*addr |= pmio_read(pmres, AMDSB_PM_WDT_BASE_MSB - i);
302 	/* Set watchdog timer tick to 1s. */
317 	device_set_desc(dev, "AMD SB600/SB7xx Watchdog Timer");
334 	for (i = 3; i >= 0; i--) {
343 	/* Find base address of memory mapped WDT registers. */
346 		*addr |= pmio_read(pmres, AMDSB8_PM_WDT_EN + 3 - i);
350 	/* Set watchdog timer tick to 1s. */
372 	device_set_desc(dev, "AMD SB8xx/SB9xx/Axx Watchdog Timer");
402 	 * Set watchdog timer tick to 1s and
416 	device_set_descf(dev, "%s FCH Rev 41h+ Watchdog Timer",
486 	sc->max_ticks = UINT16_MAX;
487 	sc->rid_ctrl = 0;
488 	sc->rid_count = 1;
490 	sc->ms_per_tick = 1000;
492 	sc->res_ctrl = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
493 	    &sc->rid_ctrl, RF_ACTIVE);
494 	if (sc->res_ctrl == NULL) {
498 	sc->res_count = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
499 	    &sc->rid_count, RF_ACTIVE);
500 	if (sc->res_count == NULL) {
514 	sc->dev = dev;
533 	sc->ev_tag = EVENTHANDLER_REGISTER(watchdog_list, amdsbwd_event, sc,
549 	if (sc->ev_tag != NULL)
550 		EVENTHANDLER_DEREGISTER(watchdog_list, sc->ev_tag);
552 	if (sc->active)
555 	if (sc->res_ctrl != NULL)
556 		bus_release_resource(dev, SYS_RES_MEMORY, sc->rid_ctrl,
557 		    sc->res_ctrl);
559 	if (sc->res_count != NULL)
560 		bus_release_resource(dev, SYS_RES_MEMORY, sc->rid_count,
561 		    sc->res_count);
586 	if (sc->active) {
587 		amdsbwd_tmr_set(sc, sc->timeout);