sdhci_fdt.c revision 265208
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: head/sys/dev/sdhci/sdhci_fdt.c 265208 2014-05-02 01:28:19Z ian $"); 33249997Swkoszek 34249997Swkoszek#include <sys/param.h> 35249997Swkoszek#include <sys/systm.h> 36249997Swkoszek#include <sys/bus.h> 37249997Swkoszek#include <sys/conf.h> 38249997Swkoszek#include <sys/kernel.h> 39249997Swkoszek#include <sys/lock.h> 40249997Swkoszek#include <sys/module.h> 41249997Swkoszek#include <sys/mutex.h> 42249997Swkoszek#include <sys/resource.h> 43249997Swkoszek#include <sys/rman.h> 44249997Swkoszek#include <sys/sysctl.h> 45249997Swkoszek#include <sys/taskqueue.h> 46249997Swkoszek 47249997Swkoszek#include <machine/bus.h> 48249997Swkoszek#include <machine/resource.h> 49249997Swkoszek#include <machine/stdarg.h> 50249997Swkoszek 51249997Swkoszek#include <dev/fdt/fdt_common.h> 52249997Swkoszek#include <dev/ofw/ofw_bus.h> 53249997Swkoszek#include <dev/ofw/ofw_bus_subr.h> 54249997Swkoszek 55249997Swkoszek#include <dev/mmc/bridge.h> 56249997Swkoszek#include <dev/mmc/mmcreg.h> 57249997Swkoszek#include <dev/mmc/mmcbrvar.h> 58249997Swkoszek#include <dev/sdhci/sdhci.h> 59249997Swkoszek 60249997Swkoszek#include "mmcbr_if.h" 61249997Swkoszek#include "sdhci_if.h" 62249997Swkoszek 63249997Swkoszek#define MAX_SLOTS 6 64249997Swkoszek 65249997Swkoszekstruct sdhci_fdt_softc { 66249997Swkoszek device_t dev; /* Controller device */ 67249997Swkoszek u_int quirks; /* Chip specific quirks */ 68249997Swkoszek u_int caps; /* If we override SDHCI_CAPABILITIES */ 69265208Sian uint32_t max_clk; /* Max possible freq */ 70249997Swkoszek struct resource *irq_res; /* IRQ resource */ 71249997Swkoszek void *intrhand; /* Interrupt handle */ 72249997Swkoszek 73249997Swkoszek int num_slots; /* Number of slots on this controller*/ 74249997Swkoszek struct sdhci_slot slots[MAX_SLOTS]; 75249997Swkoszek struct resource *mem_res[MAX_SLOTS]; /* Memory resource */ 76249997Swkoszek}; 77249997Swkoszek 78249997Swkoszekstatic uint8_t 79249997Swkoszeksdhci_fdt_read_1(device_t dev, struct sdhci_slot *slot, bus_size_t off) 80249997Swkoszek{ 81249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 82249997Swkoszek return (bus_read_1(sc->mem_res[slot->num], off)); 83249997Swkoszek} 84249997Swkoszek 85249997Swkoszekstatic void 86249997Swkoszeksdhci_fdt_write_1(device_t dev, struct sdhci_slot *slot, bus_size_t off, 87249997Swkoszek uint8_t val) 88249997Swkoszek{ 89249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 90249997Swkoszek bus_write_1(sc->mem_res[slot->num], off, val); 91249997Swkoszek} 92249997Swkoszek 93249997Swkoszekstatic uint16_t 94249997Swkoszeksdhci_fdt_read_2(device_t dev, struct sdhci_slot *slot, bus_size_t off) 95249997Swkoszek{ 96249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 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, 102249997Swkoszek uint16_t val) 103249997Swkoszek{ 104249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 105249997Swkoszek bus_write_2(sc->mem_res[slot->num], off, val); 106249997Swkoszek} 107249997Swkoszek 108249997Swkoszekstatic uint32_t 109249997Swkoszeksdhci_fdt_read_4(device_t dev, struct sdhci_slot *slot, bus_size_t off) 110249997Swkoszek{ 111249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 112249997Swkoszek return (bus_read_4(sc->mem_res[slot->num], off)); 113249997Swkoszek} 114249997Swkoszek 115249997Swkoszekstatic void 116249997Swkoszeksdhci_fdt_write_4(device_t dev, struct sdhci_slot *slot, bus_size_t off, 117249997Swkoszek uint32_t val) 118249997Swkoszek{ 119249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 120249997Swkoszek bus_write_4(sc->mem_res[slot->num], off, val); 121249997Swkoszek} 122249997Swkoszek 123249997Swkoszekstatic void 124249997Swkoszeksdhci_fdt_read_multi_4(device_t dev, struct sdhci_slot *slot, 125249997Swkoszek bus_size_t off, uint32_t *data, bus_size_t count) 126249997Swkoszek{ 127249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 128249997Swkoszek bus_read_multi_4(sc->mem_res[slot->num], off, data, count); 129249997Swkoszek} 130249997Swkoszek 131249997Swkoszekstatic void 132249997Swkoszeksdhci_fdt_write_multi_4(device_t dev, struct sdhci_slot *slot, 133249997Swkoszek bus_size_t off, uint32_t *data, bus_size_t count) 134249997Swkoszek{ 135249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 136249997Swkoszek bus_write_multi_4(sc->mem_res[slot->num], off, data, count); 137249997Swkoszek} 138249997Swkoszek 139249997Swkoszekstatic void 140249997Swkoszeksdhci_fdt_intr(void *arg) 141249997Swkoszek{ 142249997Swkoszek struct sdhci_fdt_softc *sc = (struct sdhci_fdt_softc *)arg; 143249997Swkoszek int i; 144249997Swkoszek 145249997Swkoszek for (i = 0; i < sc->num_slots; i++) { 146249997Swkoszek struct sdhci_slot *slot = &sc->slots[i]; 147249997Swkoszek sdhci_generic_intr(slot); 148249997Swkoszek } 149249997Swkoszek} 150249997Swkoszek 151249997Swkoszekstatic int 152249997Swkoszeksdhci_fdt_probe(device_t dev) 153249997Swkoszek{ 154249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 155249997Swkoszek phandle_t node; 156249997Swkoszek pcell_t cid; 157249997Swkoszek 158249997Swkoszek sc->quirks = 0; 159249997Swkoszek sc->num_slots = 1; 160265208Sian sc->max_clk = 0; 161249997Swkoszek 162261410Sian if (!ofw_bus_status_okay(dev)) 163261410Sian return (ENXIO); 164261410Sian 165249997Swkoszek if (ofw_bus_is_compatible(dev, "sdhci_generic")) { 166249997Swkoszek device_set_desc(dev, "generic fdt SDHCI controller"); 167249997Swkoszek } else if (ofw_bus_is_compatible(dev, "xlnx,zy7_sdhci")) { 168249997Swkoszek sc->quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK; 169249997Swkoszek device_set_desc(dev, "Zynq-7000 generic fdt SDHCI controller"); 170249997Swkoszek } else 171249997Swkoszek return (ENXIO); 172249997Swkoszek 173249997Swkoszek node = ofw_bus_get_node(dev); 174249997Swkoszek 175265208Sian /* Allow dts to patch quirks, slots, and max-frequency. */ 176265208Sian if ((OF_getencprop(node, "quirks", &cid, sizeof(cid))) > 0) 177265208Sian sc->quirks = cid; 178265208Sian if ((OF_getencprop(node, "num-slots", &cid, sizeof(cid))) > 0) 179265208Sian sc->num_slots = cid; 180265208Sian if ((OF_getencprop(node, "max-frequency", &cid, sizeof(cid))) > 0) 181265208Sian sc->max_clk = cid; 182265208Sian 183249997Swkoszek 184249997Swkoszek return (0); 185249997Swkoszek} 186249997Swkoszek 187249997Swkoszekstatic int 188249997Swkoszeksdhci_fdt_attach(device_t dev) 189249997Swkoszek{ 190249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 191249997Swkoszek int err, slots, rid, i; 192249997Swkoszek 193249997Swkoszek sc->dev = dev; 194249997Swkoszek 195249997Swkoszek /* Allocate IRQ. */ 196249997Swkoszek rid = 0; 197249997Swkoszek sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 198249997Swkoszek RF_ACTIVE); 199249997Swkoszek if (sc->irq_res == NULL) { 200249997Swkoszek device_printf(dev, "Can't allocate IRQ\n"); 201249997Swkoszek return (ENOMEM); 202249997Swkoszek } 203249997Swkoszek 204249997Swkoszek /* Scan all slots. */ 205249997Swkoszek slots = sc->num_slots; /* number of slots determined in probe(). */ 206249997Swkoszek sc->num_slots = 0; 207249997Swkoszek for (i = 0; i < slots; i++) { 208249997Swkoszek struct sdhci_slot *slot = &sc->slots[sc->num_slots]; 209249997Swkoszek 210249997Swkoszek /* Allocate memory. */ 211249997Swkoszek rid = 0; 212249997Swkoszek sc->mem_res[i] = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 213249997Swkoszek &rid, RF_ACTIVE); 214249997Swkoszek if (sc->mem_res[i] == NULL) { 215249997Swkoszek device_printf(dev, "Can't allocate memory for " 216249997Swkoszek "slot %d\n", i); 217249997Swkoszek continue; 218249997Swkoszek } 219249997Swkoszek 220249997Swkoszek slot->quirks = sc->quirks; 221249997Swkoszek slot->caps = sc->caps; 222265208Sian slot->max_clk = sc->max_clk; 223249997Swkoszek 224249997Swkoszek if (sdhci_init_slot(dev, slot, i) != 0) 225249997Swkoszek continue; 226249997Swkoszek 227249997Swkoszek sc->num_slots++; 228249997Swkoszek } 229249997Swkoszek device_printf(dev, "%d slot(s) allocated\n", sc->num_slots); 230249997Swkoszek 231249997Swkoszek /* Activate the interrupt */ 232249997Swkoszek err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE, 233249997Swkoszek NULL, sdhci_fdt_intr, sc, &sc->intrhand); 234249997Swkoszek if (err) { 235249997Swkoszek device_printf(dev, "Cannot setup IRQ\n"); 236249997Swkoszek return (err); 237249997Swkoszek } 238249997Swkoszek 239249997Swkoszek /* Process cards detection. */ 240249997Swkoszek for (i = 0; i < sc->num_slots; i++) { 241249997Swkoszek struct sdhci_slot *slot = &sc->slots[i]; 242249997Swkoszek sdhci_start_slot(slot); 243249997Swkoszek } 244249997Swkoszek 245249997Swkoszek return (0); 246249997Swkoszek} 247249997Swkoszek 248249997Swkoszekstatic int 249249997Swkoszeksdhci_fdt_detach(device_t dev) 250249997Swkoszek{ 251249997Swkoszek struct sdhci_fdt_softc *sc = device_get_softc(dev); 252249997Swkoszek int i; 253249997Swkoszek 254249997Swkoszek bus_generic_detach(dev); 255249997Swkoszek bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 256249997Swkoszek bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq_res), 257249997Swkoszek sc->irq_res); 258249997Swkoszek 259249997Swkoszek for (i = 0; i < sc->num_slots; i++) { 260249997Swkoszek struct sdhci_slot *slot = &sc->slots[i]; 261249997Swkoszek 262249997Swkoszek sdhci_cleanup_slot(slot); 263249997Swkoszek bus_release_resource(dev, SYS_RES_MEMORY, 264249997Swkoszek rman_get_rid(sc->mem_res[i]), 265249997Swkoszek sc->mem_res[i]); 266249997Swkoszek } 267249997Swkoszek 268249997Swkoszek return (0); 269249997Swkoszek} 270249997Swkoszek 271249997Swkoszekstatic device_method_t sdhci_fdt_methods[] = { 272249997Swkoszek /* device_if */ 273249997Swkoszek DEVMETHOD(device_probe, sdhci_fdt_probe), 274249997Swkoszek DEVMETHOD(device_attach, sdhci_fdt_attach), 275249997Swkoszek DEVMETHOD(device_detach, sdhci_fdt_detach), 276249997Swkoszek 277249997Swkoszek /* Bus interface */ 278249997Swkoszek DEVMETHOD(bus_read_ivar, sdhci_generic_read_ivar), 279249997Swkoszek DEVMETHOD(bus_write_ivar, sdhci_generic_write_ivar), 280249997Swkoszek 281249997Swkoszek /* mmcbr_if */ 282249997Swkoszek DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios), 283249997Swkoszek DEVMETHOD(mmcbr_request, sdhci_generic_request), 284249997Swkoszek DEVMETHOD(mmcbr_get_ro, sdhci_generic_get_ro), 285249997Swkoszek DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host), 286249997Swkoszek DEVMETHOD(mmcbr_release_host, sdhci_generic_release_host), 287249997Swkoszek 288249997Swkoszek /* SDHCI registers accessors */ 289249997Swkoszek DEVMETHOD(sdhci_read_1, sdhci_fdt_read_1), 290249997Swkoszek DEVMETHOD(sdhci_read_2, sdhci_fdt_read_2), 291249997Swkoszek DEVMETHOD(sdhci_read_4, sdhci_fdt_read_4), 292249997Swkoszek DEVMETHOD(sdhci_read_multi_4, sdhci_fdt_read_multi_4), 293249997Swkoszek DEVMETHOD(sdhci_write_1, sdhci_fdt_write_1), 294249997Swkoszek DEVMETHOD(sdhci_write_2, sdhci_fdt_write_2), 295249997Swkoszek DEVMETHOD(sdhci_write_4, sdhci_fdt_write_4), 296249997Swkoszek DEVMETHOD(sdhci_write_multi_4, sdhci_fdt_write_multi_4), 297249997Swkoszek 298249997Swkoszek DEVMETHOD_END 299249997Swkoszek}; 300249997Swkoszek 301249997Swkoszekstatic driver_t sdhci_fdt_driver = { 302249997Swkoszek "sdhci_fdt", 303249997Swkoszek sdhci_fdt_methods, 304249997Swkoszek sizeof(struct sdhci_fdt_softc), 305249997Swkoszek}; 306249997Swkoszekstatic devclass_t sdhci_fdt_devclass; 307249997Swkoszek 308249997SwkoszekDRIVER_MODULE(sdhci_fdt, simplebus, sdhci_fdt_driver, sdhci_fdt_devclass, 0,0); 309249997SwkoszekMODULE_DEPEND(sdhci_fdt, sdhci, 1, 1, 1); 310