sdhci_fdt.c revision 318197
1249997Swkoszek/*- 2249997Swkoszek * Copyright (c) 2012 Thomas Skibo 3249997Swkoszek * Copyright (c) 2008 Alexander Motin <mav@FreeBSD.org> 4249997Swkoszek * All rights reserved. 5249997Swkoszek * 6249997Swkoszek * Redistribution and use in source and binary forms, with or without 7249997Swkoszek * modification, are permitted provided that the following conditions 8249997Swkoszek * are met: 9249997Swkoszek * 1. Redistributions of source code must retain the above copyright 10249997Swkoszek * notice, this list of conditions and the following disclaimer. 11249997Swkoszek * 2. Redistributions in binary form must reproduce the above copyright 12249997Swkoszek * notice, this list of conditions and the following disclaimer in the 13249997Swkoszek * documentation and/or other materials provided with the distribution. 14249997Swkoszek * 15249997Swkoszek * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16249997Swkoszek * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17249997Swkoszek * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18249997Swkoszek * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19249997Swkoszek * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20249997Swkoszek * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21249997Swkoszek * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22249997Swkoszek * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23249997Swkoszek * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24249997Swkoszek * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25249997Swkoszek */ 26249997Swkoszek 27249997Swkoszek/* Generic driver to attach sdhci controllers on simplebus. 28249997Swkoszek * Derived mainly from sdhci_pci.c 29249997Swkoszek */ 30249997Swkoszek 31249997Swkoszek#include <sys/cdefs.h> 32249997Swkoszek__FBSDID("$FreeBSD: stable/11/sys/dev/sdhci/sdhci_fdt.c 318197 2017-05-11 20:55:11Z marius $"); 33249997Swkoszek 34249997Swkoszek#include <sys/param.h> 35249997Swkoszek#include <sys/systm.h> 36249997Swkoszek#include <sys/bus.h> 37249997Swkoszek#include <sys/kernel.h> 38249997Swkoszek#include <sys/lock.h> 39249997Swkoszek#include <sys/module.h> 40249997Swkoszek#include <sys/mutex.h> 41249997Swkoszek#include <sys/resource.h> 42249997Swkoszek#include <sys/rman.h> 43249997Swkoszek#include <sys/sysctl.h> 44249997Swkoszek#include <sys/taskqueue.h> 45249997Swkoszek 46249997Swkoszek#include <machine/bus.h> 47249997Swkoszek#include <machine/resource.h> 48249997Swkoszek 49249997Swkoszek#include <dev/fdt/fdt_common.h> 50249997Swkoszek#include <dev/ofw/ofw_bus.h> 51249997Swkoszek#include <dev/ofw/ofw_bus_subr.h> 52249997Swkoszek 53249997Swkoszek#include <dev/mmc/bridge.h> 54318197Smarius 55249997Swkoszek#include <dev/sdhci/sdhci.h> 56249997Swkoszek 57249997Swkoszek#include "mmcbr_if.h" 58249997Swkoszek#include "sdhci_if.h" 59249997Swkoszek 60318197Smarius#define MAX_SLOTS 6 61249997Swkoszek 62249997Swkoszekstruct sdhci_fdt_softc { 63249997Swkoszek device_t dev; /* Controller device */ 64249997Swkoszek u_int quirks; /* Chip specific quirks */ 65249997Swkoszek u_int caps; /* If we override SDHCI_CAPABILITIES */ 66265208Sian uint32_t max_clk; /* Max possible freq */ 67249997Swkoszek struct resource *irq_res; /* IRQ resource */ 68318197Smarius void *intrhand; /* Interrupt handle */ 69249997Swkoszek 70249997Swkoszek int num_slots; /* Number of slots on this controller*/ 71249997Swkoszek struct sdhci_slot slots[MAX_SLOTS]; 72249997Swkoszek struct resource *mem_res[MAX_SLOTS]; /* Memory resource */ 73249997Swkoszek}; 74249997Swkoszek 75249997Swkoszekstatic uint8_t 76249997Swkoszeksdhci_fdt_read_1(device_t dev, struct sdhci_slot *slot, bus_size_t off) 77249997Swkoszek{ 78249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 79318197Smarius 80249997Swkoszek return (bus_read_1(sc->mem_res[slot->num], off)); 81249997Swkoszek} 82249997Swkoszek 83249997Swkoszekstatic void 84249997Swkoszeksdhci_fdt_write_1(device_t dev, struct sdhci_slot *slot, bus_size_t off, 85318197Smarius uint8_t val) 86249997Swkoszek{ 87249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 88318197Smarius 89249997Swkoszek bus_write_1(sc->mem_res[slot->num], off, val); 90249997Swkoszek} 91249997Swkoszek 92249997Swkoszekstatic uint16_t 93249997Swkoszeksdhci_fdt_read_2(device_t dev, struct sdhci_slot *slot, bus_size_t off) 94249997Swkoszek{ 95249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 96318197Smarius 97249997Swkoszek return (bus_read_2(sc->mem_res[slot->num], off)); 98249997Swkoszek} 99249997Swkoszek 100249997Swkoszekstatic void 101249997Swkoszeksdhci_fdt_write_2(device_t dev, struct sdhci_slot *slot, bus_size_t off, 102318197Smarius uint16_t val) 103249997Swkoszek{ 104249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 105318197Smarius 106249997Swkoszek bus_write_2(sc->mem_res[slot->num], off, val); 107249997Swkoszek} 108249997Swkoszek 109249997Swkoszekstatic uint32_t 110249997Swkoszeksdhci_fdt_read_4(device_t dev, struct sdhci_slot *slot, bus_size_t off) 111249997Swkoszek{ 112249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 113318197Smarius 114249997Swkoszek return (bus_read_4(sc->mem_res[slot->num], off)); 115249997Swkoszek} 116249997Swkoszek 117249997Swkoszekstatic void 118249997Swkoszeksdhci_fdt_write_4(device_t dev, struct sdhci_slot *slot, bus_size_t off, 119318197Smarius uint32_t val) 120249997Swkoszek{ 121249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 122318197Smarius 123249997Swkoszek bus_write_4(sc->mem_res[slot->num], off, val); 124249997Swkoszek} 125249997Swkoszek 126249997Swkoszekstatic void 127249997Swkoszeksdhci_fdt_read_multi_4(device_t dev, struct sdhci_slot *slot, 128249997Swkoszek bus_size_t off, uint32_t *data, bus_size_t count) 129249997Swkoszek{ 130249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 131318197Smarius 132249997Swkoszek bus_read_multi_4(sc->mem_res[slot->num], off, data, count); 133249997Swkoszek} 134249997Swkoszek 135249997Swkoszekstatic void 136249997Swkoszeksdhci_fdt_write_multi_4(device_t dev, struct sdhci_slot *slot, 137249997Swkoszek bus_size_t off, uint32_t *data, bus_size_t count) 138249997Swkoszek{ 139249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 140318197Smarius 141249997Swkoszek bus_write_multi_4(sc->mem_res[slot->num], off, data, count); 142249997Swkoszek} 143249997Swkoszek 144249997Swkoszekstatic void 145249997Swkoszeksdhci_fdt_intr(void *arg) 146249997Swkoszek{ 147249997Swkoszek struct sdhci_fdt_softc *sc = (struct sdhci_fdt_softc *)arg; 148249997Swkoszek int i; 149249997Swkoszek 150318197Smarius for (i = 0; i < sc->num_slots; i++) 151318197Smarius sdhci_generic_intr(&sc->slots[i]); 152249997Swkoszek} 153249997Swkoszek 154249997Swkoszekstatic int 155249997Swkoszeksdhci_fdt_probe(device_t dev) 156249997Swkoszek{ 157249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 158249997Swkoszek phandle_t node; 159249997Swkoszek pcell_t cid; 160249997Swkoszek 161249997Swkoszek sc->quirks = 0; 162249997Swkoszek sc->num_slots = 1; 163265208Sian sc->max_clk = 0; 164249997Swkoszek 165261410Sian if (!ofw_bus_status_okay(dev)) 166261410Sian return (ENXIO); 167261410Sian 168249997Swkoszek if (ofw_bus_is_compatible(dev, "sdhci_generic")) { 169249997Swkoszek device_set_desc(dev, "generic fdt SDHCI controller"); 170249997Swkoszek } else if (ofw_bus_is_compatible(dev, "xlnx,zy7_sdhci")) { 171249997Swkoszek sc->quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK; 172249997Swkoszek device_set_desc(dev, "Zynq-7000 generic fdt SDHCI controller"); 173249997Swkoszek } else 174249997Swkoszek return (ENXIO); 175249997Swkoszek 176249997Swkoszek node = ofw_bus_get_node(dev); 177249997Swkoszek 178265208Sian /* Allow dts to patch quirks, slots, and max-frequency. */ 179265208Sian if ((OF_getencprop(node, "quirks", &cid, sizeof(cid))) > 0) 180265208Sian sc->quirks = cid; 181265208Sian if ((OF_getencprop(node, "num-slots", &cid, sizeof(cid))) > 0) 182265208Sian sc->num_slots = cid; 183265208Sian if ((OF_getencprop(node, "max-frequency", &cid, sizeof(cid))) > 0) 184265208Sian sc->max_clk = cid; 185265208Sian 186249997Swkoszek return (0); 187249997Swkoszek} 188249997Swkoszek 189249997Swkoszekstatic int 190249997Swkoszeksdhci_fdt_attach(device_t dev) 191249997Swkoszek{ 192249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 193318197Smarius struct sdhci_slot *slot; 194249997Swkoszek int err, slots, rid, i; 195270885Smarius 196249997Swkoszek sc->dev = dev; 197249997Swkoszek 198249997Swkoszek /* Allocate IRQ. */ 199249997Swkoszek rid = 0; 200249997Swkoszek sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 201318197Smarius RF_ACTIVE); 202249997Swkoszek if (sc->irq_res == NULL) { 203249997Swkoszek device_printf(dev, "Can't allocate IRQ\n"); 204249997Swkoszek return (ENOMEM); 205249997Swkoszek } 206249997Swkoszek 207249997Swkoszek /* Scan all slots. */ 208249997Swkoszek slots = sc->num_slots; /* number of slots determined in probe(). */ 209249997Swkoszek sc->num_slots = 0; 210249997Swkoszek for (i = 0; i < slots; i++) { 211318197Smarius slot = &sc->slots[sc->num_slots]; 212249997Swkoszek 213249997Swkoszek /* Allocate memory. */ 214249997Swkoszek rid = 0; 215249997Swkoszek sc->mem_res[i] = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 216249997Swkoszek &rid, RF_ACTIVE); 217249997Swkoszek if (sc->mem_res[i] == NULL) { 218318197Smarius device_printf(dev, 219318197Smarius "Can't allocate memory for slot %d\n", i); 220249997Swkoszek continue; 221249997Swkoszek } 222249997Swkoszek 223249997Swkoszek slot->quirks = sc->quirks; 224249997Swkoszek slot->caps = sc->caps; 225265208Sian slot->max_clk = sc->max_clk; 226249997Swkoszek 227249997Swkoszek if (sdhci_init_slot(dev, slot, i) != 0) 228249997Swkoszek continue; 229249997Swkoszek 230249997Swkoszek sc->num_slots++; 231249997Swkoszek } 232249997Swkoszek device_printf(dev, "%d slot(s) allocated\n", sc->num_slots); 233249997Swkoszek 234249997Swkoszek /* Activate the interrupt */ 235249997Swkoszek err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE, 236249997Swkoszek NULL, sdhci_fdt_intr, sc, &sc->intrhand); 237249997Swkoszek if (err) { 238249997Swkoszek device_printf(dev, "Cannot setup IRQ\n"); 239249997Swkoszek return (err); 240249997Swkoszek } 241249997Swkoszek 242249997Swkoszek /* Process cards detection. */ 243318197Smarius for (i = 0; i < sc->num_slots; i++) 244318197Smarius sdhci_start_slot(&sc->slots[i]); 245270885Smarius 246249997Swkoszek return (0); 247249997Swkoszek} 248249997Swkoszek 249249997Swkoszekstatic int 250249997Swkoszeksdhci_fdt_detach(device_t dev) 251249997Swkoszek{ 252249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 253249997Swkoszek int i; 254249997Swkoszek 255249997Swkoszek bus_generic_detach(dev); 256249997Swkoszek bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 257249997Swkoszek bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq_res), 258318197Smarius sc->irq_res); 259249997Swkoszek 260249997Swkoszek for (i = 0; i < sc->num_slots; i++) { 261318197Smarius sdhci_cleanup_slot(&sc->slots[i]); 262249997Swkoszek bus_release_resource(dev, SYS_RES_MEMORY, 263318197Smarius rman_get_rid(sc->mem_res[i]), sc->mem_res[i]); 264249997Swkoszek } 265249997Swkoszek 266249997Swkoszek return (0); 267249997Swkoszek} 268249997Swkoszek 269249997Swkoszekstatic device_method_t sdhci_fdt_methods[] = { 270249997Swkoszek /* device_if */ 271318197Smarius DEVMETHOD(device_probe, sdhci_fdt_probe), 272318197Smarius DEVMETHOD(device_attach, sdhci_fdt_attach), 273318197Smarius DEVMETHOD(device_detach, sdhci_fdt_detach), 274249997Swkoszek 275249997Swkoszek /* Bus interface */ 276249997Swkoszek DEVMETHOD(bus_read_ivar, sdhci_generic_read_ivar), 277249997Swkoszek DEVMETHOD(bus_write_ivar, sdhci_generic_write_ivar), 278249997Swkoszek 279249997Swkoszek /* mmcbr_if */ 280318197Smarius DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios), 281318197Smarius DEVMETHOD(mmcbr_request, sdhci_generic_request), 282318197Smarius DEVMETHOD(mmcbr_get_ro, sdhci_generic_get_ro), 283318197Smarius DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host), 284318197Smarius DEVMETHOD(mmcbr_release_host, sdhci_generic_release_host), 285249997Swkoszek 286249997Swkoszek /* SDHCI registers accessors */ 287249997Swkoszek DEVMETHOD(sdhci_read_1, sdhci_fdt_read_1), 288249997Swkoszek DEVMETHOD(sdhci_read_2, sdhci_fdt_read_2), 289249997Swkoszek DEVMETHOD(sdhci_read_4, sdhci_fdt_read_4), 290249997Swkoszek DEVMETHOD(sdhci_read_multi_4, sdhci_fdt_read_multi_4), 291249997Swkoszek DEVMETHOD(sdhci_write_1, sdhci_fdt_write_1), 292249997Swkoszek DEVMETHOD(sdhci_write_2, sdhci_fdt_write_2), 293249997Swkoszek DEVMETHOD(sdhci_write_4, sdhci_fdt_write_4), 294249997Swkoszek DEVMETHOD(sdhci_write_multi_4, sdhci_fdt_write_multi_4), 295249997Swkoszek 296249997Swkoszek DEVMETHOD_END 297249997Swkoszek}; 298249997Swkoszek 299249997Swkoszekstatic driver_t sdhci_fdt_driver = { 300249997Swkoszek "sdhci_fdt", 301249997Swkoszek sdhci_fdt_methods, 302249997Swkoszek sizeof(struct sdhci_fdt_softc), 303249997Swkoszek}; 304249997Swkoszekstatic devclass_t sdhci_fdt_devclass; 305249997Swkoszek 306270885SmariusDRIVER_MODULE(sdhci_fdt, simplebus, sdhci_fdt_driver, sdhci_fdt_devclass, 307270885Smarius NULL, NULL); 308249997SwkoszekMODULE_DEPEND(sdhci_fdt, sdhci, 1, 1, 1); 309318197SmariusMMC_DECLARE_BRIDGE(sdhci_fdt); 310