1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
30  * Zynq-7000 Devcfg driver.  This allows programming the PL (FPGA) section
33  * Reference: Zynq-7000 All Programmable SoC Technical Reference Manual.
88 #define DEVCFG_SC_LOCK(sc)		mtx_lock(&(sc)->sc_mtx)
89 #define	DEVCFG_SC_UNLOCK(sc)		mtx_unlock(&(sc)->sc_mtx)
91 	mtx_init(&(sc)->sc_mtx, device_get_nameunit((sc)->dev),	\
93 #define DEVCFG_SC_LOCK_DESTROY(sc)	mtx_destroy(&(sc)->sc_mtx);
94 #define DEVCFG_SC_ASSERT_LOCKED(sc)	mtx_assert(&(sc)->sc_mtx, MA_OWNED);
96 #define RD4(sc, off) 		(bus_read_4((sc)->mem_res, (off)))
97 #define WR4(sc, off, val) 	(bus_write_4((sc)->mem_res, (off), (val)))
100     "Xilinx Zynq-7000 PL (FPGA) section");
111 	   "Enable PS-PL level shifters after device config");
115 	   "Zynq-7000 PS version");
227 #define ZY7_DEVCFG_DMA_SRC_LEN		0x020	/* in 4-byte words. */
259 	switch (cfg->source) {  in zy7_devcfg_fclk_sysctl_source()
276 	if (error != 0 || req->newptr == NULL)  in zy7_devcfg_fclk_sysctl_source()
280 		cfg->source = ZY7_PL_FCLK_SRC_IO;  in zy7_devcfg_fclk_sysctl_source()
282 		cfg->source = ZY7_PL_FCLK_SRC_DDR;  in zy7_devcfg_fclk_sysctl_source()
284 		cfg->source = ZY7_PL_FCLK_SRC_ARM;  in zy7_devcfg_fclk_sysctl_source()
288 	zy7_pl_fclk_set_source(unit, cfg->source);  in zy7_devcfg_fclk_sysctl_source()
289 	if (cfg->frequency > 0)  in zy7_devcfg_fclk_sysctl_source()
290 		cfg->actual_frequency = zy7_pl_fclk_get_freq(unit);  in zy7_devcfg_fclk_sysctl_source()
307 	freq = cfg->frequency;  in zy7_devcfg_fclk_sysctl_freq()
310 	if (error != 0 || req->newptr == NULL)  in zy7_devcfg_fclk_sysctl_freq()
325 	cfg->frequency = freq;  in zy7_devcfg_fclk_sysctl_freq()
326 	cfg->actual_frequency = new_actual_freq;  in zy7_devcfg_fclk_sysctl_freq()
339 	if (error != 0 || req->newptr == NULL)  in zy7_devcfg_fclk_sysctl_level_shifters()
357 	sysctl_ctx_init(&sc->sysctl_tree);  in zy7_devcfg_init_fclk_sysctl()
358 	sc->sysctl_tree_top = SYSCTL_ADD_NODE(&sc->sysctl_tree,  in zy7_devcfg_init_fclk_sysctl()
361 	if (sc->sysctl_tree_top == NULL) {  in zy7_devcfg_init_fclk_sysctl()
362 		sysctl_ctx_free(&sc->sysctl_tree);  in zy7_devcfg_init_fclk_sysctl()
363 		return (-1);  in zy7_devcfg_init_fclk_sysctl()
368 		fclk_node = SYSCTL_ADD_NODE(&sc->sysctl_tree,  in zy7_devcfg_init_fclk_sysctl()
369 		    SYSCTL_CHILDREN(sc->sysctl_tree_top), OID_AUTO, fclk_num,  in zy7_devcfg_init_fclk_sysctl()
372 		SYSCTL_ADD_INT(&sc->sysctl_tree,  in zy7_devcfg_init_fclk_sysctl()
377 		SYSCTL_ADD_PROC(&sc->sysctl_tree,  in zy7_devcfg_init_fclk_sysctl()
383 		SYSCTL_ADD_PROC(&sc->sysctl_tree,  in zy7_devcfg_init_fclk_sysctl()
430 	/* Clear sticky bits and set up INIT signal positive edge interrupt. */  in zy7_devcfg_reset_pl()
448 		/* Wait for positive edge interrupt. */  in zy7_devcfg_reset_pl()
449 		err = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "zy7i1", hz);  in zy7_devcfg_reset_pl()
467 	/* Clear sticky bits and set up INIT positive edge interrupt. */  in zy7_devcfg_reset_pl()
479 	err = mtx_sleep(sc, &sc->sc_mtx, PCATCH, "zy7i2", hz);  in zy7_devcfg_reset_pl()
500 	struct zy7_devcfg_softc *sc = dev->si_drv1;  in zy7_devcfg_open()
504 	if (sc->is_open) {  in zy7_devcfg_open()
509 	sc->dma_map = NULL;  in zy7_devcfg_open()
510 	err = bus_dma_tag_create(bus_get_dma_tag(sc->dev), 4, 0,  in zy7_devcfg_open()
519 				 &sc->sc_mtx,  in zy7_devcfg_open()
520 				 &sc->dma_tag);  in zy7_devcfg_open()
526 	sc->is_open = 1;  in zy7_devcfg_open()
534 	struct zy7_devcfg_softc *sc = dev->si_drv1;  in zy7_devcfg_write()
542 	if (uio->uio_offset == 0 && uio->uio_resid > 0)	{  in zy7_devcfg_write()
553 	err = bus_dmamem_alloc(sc->dma_tag, &dma_mem, BUS_DMA_NOWAIT,  in zy7_devcfg_write()
554 			       &sc->dma_map);  in zy7_devcfg_write()
559 	err = bus_dmamap_load(sc->dma_tag, sc->dma_map, dma_mem, PAGE_SIZE,  in zy7_devcfg_write()
562 		bus_dmamem_free(sc->dma_tag, dma_mem, sc->dma_map);  in zy7_devcfg_write()
567 	while (uio->uio_resid > 0) {  in zy7_devcfg_write()
575 		/* uiomove the data from user buffer to our dma map. */  in zy7_devcfg_write()
576 		segsz = MIN(PAGE_SIZE, uio->uio_resid);  in zy7_devcfg_write()
584 		bus_dmamap_sync(sc->dma_tag, sc->dma_map,  in zy7_devcfg_write()
590 		if (uio->uio_resid > segsz)  in zy7_devcfg_write()
606 		err = mtx_sleep(sc->dma_map, &sc->sc_mtx, PCATCH,  in zy7_devcfg_write()
611 		bus_dmamap_sync(sc->dma_tag, sc->dma_map,  in zy7_devcfg_write()
620 	bus_dmamap_unload(sc->dma_tag, sc->dma_map);  in zy7_devcfg_write()
621 	bus_dmamem_free(sc->dma_tag, dma_mem, sc->dma_map);  in zy7_devcfg_write()
629 	struct zy7_devcfg_softc *sc = dev->si_drv1;  in zy7_devcfg_close()
632 	sc->is_open = 0;  in zy7_devcfg_close()
633 	bus_dma_tag_destroy(sc->dma_tag);  in zy7_devcfg_close()
662 		wakeup(sc->dma_map);  in zy7_devcfg_intr()
664 	/* INIT_B positive edge? */  in zy7_devcfg_intr()
719 	sc->dev = dev;  in zy7_devcfg_attach()
725 	sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,  in zy7_devcfg_attach()
727 	if (sc->mem_res == NULL) {  in zy7_devcfg_attach()
735 	sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,  in zy7_devcfg_attach()
737 	if (sc->irq_res == NULL) {  in zy7_devcfg_attach()
744 	err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE,  in zy7_devcfg_attach()
745 			     NULL, zy7_devcfg_intr, sc, &sc->intrhandle);  in zy7_devcfg_attach()
753 	sc->sc_ctl_dev = make_dev(&zy7_devcfg_cdevsw, 0,  in zy7_devcfg_attach()
755 	if (sc->sc_ctl_dev == NULL) {  in zy7_devcfg_attach()
760 	sc->sc_ctl_dev->si_drv1 = sc;  in zy7_devcfg_attach()
800 	if (sc->sysctl_tree_top != NULL) {  in zy7_devcfg_detach()
801 		sysctl_ctx_free(&sc->sysctl_tree);  in zy7_devcfg_detach()
802 		sc->sysctl_tree_top = NULL;  in zy7_devcfg_detach()
806 	if (sc->sc_ctl_dev != NULL)  in zy7_devcfg_detach()
807 		destroy_dev(sc->sc_ctl_dev);  in zy7_devcfg_detach()
810 	if (sc->irq_res != NULL) {  in zy7_devcfg_detach()
811 		if (sc->intrhandle)  in zy7_devcfg_detach()
812 			bus_teardown_intr(dev, sc->irq_res, sc->intrhandle);  in zy7_devcfg_detach()
814 			     rman_get_rid(sc->irq_res), sc->irq_res);  in zy7_devcfg_detach()
818 	if (sc->mem_res != NULL)  in zy7_devcfg_detach()
820 			     rman_get_rid(sc->mem_res), sc->mem_res);  in zy7_devcfg_detach()