/*- * Copyright (c) 2012 Thomas Skibo * Copyright (c) 2008 Alexander Motin * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* Generic driver to attach sdhci controllers on simplebus. * Derived mainly from sdhci_pci.c */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mmcbr_if.h" #include "sdhci_if.h" #define MAX_SLOTS 6 struct sdhci_fdt_softc { device_t dev; /* Controller device */ u_int quirks; /* Chip specific quirks */ u_int caps; /* If we override SDHCI_CAPABILITIES */ uint32_t max_clk; /* Max possible freq */ struct resource *irq_res; /* IRQ resource */ void *intrhand; /* Interrupt handle */ int num_slots; /* Number of slots on this controller*/ struct sdhci_slot slots[MAX_SLOTS]; struct resource *mem_res[MAX_SLOTS]; /* Memory resource */ }; static uint8_t sdhci_fdt_read_1(device_t dev, struct sdhci_slot *slot, bus_size_t off) { struct sdhci_fdt_softc *sc = device_get_softc(dev); return (bus_read_1(sc->mem_res[slot->num], off)); } static void sdhci_fdt_write_1(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint8_t val) { struct sdhci_fdt_softc *sc = device_get_softc(dev); bus_write_1(sc->mem_res[slot->num], off, val); } static uint16_t sdhci_fdt_read_2(device_t dev, struct sdhci_slot *slot, bus_size_t off) { struct sdhci_fdt_softc *sc = device_get_softc(dev); return (bus_read_2(sc->mem_res[slot->num], off)); } static void sdhci_fdt_write_2(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint16_t val) { struct sdhci_fdt_softc *sc = device_get_softc(dev); bus_write_2(sc->mem_res[slot->num], off, val); } static uint32_t sdhci_fdt_read_4(device_t dev, struct sdhci_slot *slot, bus_size_t off) { struct sdhci_fdt_softc *sc = device_get_softc(dev); return (bus_read_4(sc->mem_res[slot->num], off)); } static void sdhci_fdt_write_4(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint32_t val) { struct sdhci_fdt_softc *sc = device_get_softc(dev); bus_write_4(sc->mem_res[slot->num], off, val); } static void sdhci_fdt_read_multi_4(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint32_t *data, bus_size_t count) { struct sdhci_fdt_softc *sc = device_get_softc(dev); bus_read_multi_4(sc->mem_res[slot->num], off, data, count); } static void sdhci_fdt_write_multi_4(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint32_t *data, bus_size_t count) { struct sdhci_fdt_softc *sc = device_get_softc(dev); bus_write_multi_4(sc->mem_res[slot->num], off, data, count); } static void sdhci_fdt_intr(void *arg) { struct sdhci_fdt_softc *sc = (struct sdhci_fdt_softc *)arg; int i; for (i = 0; i < sc->num_slots; i++) { struct sdhci_slot *slot = &sc->slots[i]; sdhci_generic_intr(slot); } } static int sdhci_fdt_probe(device_t dev) { struct sdhci_fdt_softc *sc = device_get_softc(dev); phandle_t node; pcell_t cid; sc->quirks = 0; sc->num_slots = 1; sc->max_clk = 0; if (!ofw_bus_status_okay(dev)) return (ENXIO); if (ofw_bus_is_compatible(dev, "sdhci_generic")) { device_set_desc(dev, "generic fdt SDHCI controller"); } else if (ofw_bus_is_compatible(dev, "xlnx,zy7_sdhci")) { sc->quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK; device_set_desc(dev, "Zynq-7000 generic fdt SDHCI controller"); } else return (ENXIO); node = ofw_bus_get_node(dev); /* Allow dts to patch quirks, slots, and max-frequency. */ if ((OF_getencprop(node, "quirks", &cid, sizeof(cid))) > 0) sc->quirks = cid; if ((OF_getencprop(node, "num-slots", &cid, sizeof(cid))) > 0) sc->num_slots = cid; if ((OF_getencprop(node, "max-frequency", &cid, sizeof(cid))) > 0) sc->max_clk = cid; return (0); } static int sdhci_fdt_attach(device_t dev) { struct sdhci_fdt_softc *sc = device_get_softc(dev); int err, slots, rid, i; sc->dev = dev; /* Allocate IRQ. */ rid = 0; sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); if (sc->irq_res == NULL) { device_printf(dev, "Can't allocate IRQ\n"); return (ENOMEM); } /* Scan all slots. */ slots = sc->num_slots; /* number of slots determined in probe(). */ sc->num_slots = 0; for (i = 0; i < slots; i++) { struct sdhci_slot *slot = &sc->slots[sc->num_slots]; /* Allocate memory. */ rid = 0; sc->mem_res[i] = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (sc->mem_res[i] == NULL) { device_printf(dev, "Can't allocate memory for " "slot %d\n", i); continue; } slot->quirks = sc->quirks; slot->caps = sc->caps; slot->max_clk = sc->max_clk; if (sdhci_init_slot(dev, slot, i) != 0) continue; sc->num_slots++; } device_printf(dev, "%d slot(s) allocated\n", sc->num_slots); /* Activate the interrupt */ err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE, NULL, sdhci_fdt_intr, sc, &sc->intrhand); if (err) { device_printf(dev, "Cannot setup IRQ\n"); return (err); } /* Process cards detection. */ for (i = 0; i < sc->num_slots; i++) { struct sdhci_slot *slot = &sc->slots[i]; sdhci_start_slot(slot); } return (0); } static int sdhci_fdt_detach(device_t dev) { struct sdhci_fdt_softc *sc = device_get_softc(dev); int i; bus_generic_detach(dev); bus_teardown_intr(dev, sc->irq_res, sc->intrhand); bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq_res), sc->irq_res); for (i = 0; i < sc->num_slots; i++) { struct sdhci_slot *slot = &sc->slots[i]; sdhci_cleanup_slot(slot); bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem_res[i]), sc->mem_res[i]); } return (0); } static device_method_t sdhci_fdt_methods[] = { /* device_if */ DEVMETHOD(device_probe, sdhci_fdt_probe), DEVMETHOD(device_attach, sdhci_fdt_attach), DEVMETHOD(device_detach, sdhci_fdt_detach), /* Bus interface */ DEVMETHOD(bus_read_ivar, sdhci_generic_read_ivar), DEVMETHOD(bus_write_ivar, sdhci_generic_write_ivar), /* mmcbr_if */ DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios), DEVMETHOD(mmcbr_request, sdhci_generic_request), DEVMETHOD(mmcbr_get_ro, sdhci_generic_get_ro), DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host), DEVMETHOD(mmcbr_release_host, sdhci_generic_release_host), /* SDHCI registers accessors */ DEVMETHOD(sdhci_read_1, sdhci_fdt_read_1), DEVMETHOD(sdhci_read_2, sdhci_fdt_read_2), DEVMETHOD(sdhci_read_4, sdhci_fdt_read_4), DEVMETHOD(sdhci_read_multi_4, sdhci_fdt_read_multi_4), DEVMETHOD(sdhci_write_1, sdhci_fdt_write_1), DEVMETHOD(sdhci_write_2, sdhci_fdt_write_2), DEVMETHOD(sdhci_write_4, sdhci_fdt_write_4), DEVMETHOD(sdhci_write_multi_4, sdhci_fdt_write_multi_4), DEVMETHOD_END }; static driver_t sdhci_fdt_driver = { "sdhci_fdt", sdhci_fdt_methods, sizeof(struct sdhci_fdt_softc), }; static devclass_t sdhci_fdt_devclass; DRIVER_MODULE(sdhci_fdt, simplebus, sdhci_fdt_driver, sdhci_fdt_devclass, NULL, NULL); MODULE_DEPEND(sdhci_fdt, sdhci, 1, 1, 1); DRIVER_MODULE(mmc, sdhci_fdt, mmc_driver, mmc_devclass, NULL, NULL);