Date: Mon, 29 Oct 2012 17:23:46 +0000 (UTC) From: Oleksandr Tymoshenko <gonzo@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r242321 - in head/sys: arm/broadcom/bcm2835 arm/conf dev/mmc Message-ID: <201210291723.q9THNkMd007213@svn.freebsd.org>
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Author: gonzo Date: Mon Oct 29 17:23:45 2012 New Revision: 242321 URL: http://svn.freebsd.org/changeset/base/242321 Log: Add BCM2835 SDHCI driver and enable it in Raspberry Pi config Added: head/sys/arm/broadcom/bcm2835/bcm2835_sdhci.c (contents, props changed) Modified: head/sys/arm/broadcom/bcm2835/files.bcm2835 head/sys/arm/conf/RPI-B head/sys/dev/mmc/mmc.c Added: head/sys/arm/broadcom/bcm2835/bcm2835_sdhci.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/arm/broadcom/bcm2835/bcm2835_sdhci.c Mon Oct 29 17:23:45 2012 (r242321) @@ -0,0 +1,364 @@ +/*- + * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org> + * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. + * + */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bio.h> +#include <sys/bus.h> +#include <sys/conf.h> +#include <sys/endian.h> +#include <sys/kernel.h> +#include <sys/kthread.h> +#include <sys/lock.h> +#include <sys/malloc.h> +#include <sys/module.h> +#include <sys/mutex.h> +#include <sys/queue.h> +#include <sys/resource.h> +#include <sys/rman.h> +#include <sys/taskqueue.h> +#include <sys/time.h> +#include <sys/timetc.h> +#include <sys/watchdog.h> + +#include <sys/kdb.h> + +#include <machine/bus.h> +#include <machine/cpu.h> +#include <machine/cpufunc.h> +#include <machine/resource.h> +#include <machine/frame.h> +#include <machine/intr.h> + +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> + +#include <dev/mmc/bridge.h> +#include <dev/mmc/mmcreg.h> +#include <dev/mmc/mmcbrvar.h> + +#include <dev/sdhci/sdhci.h> +#include "sdhci_if.h" + +#define DEBUG + +#ifdef DEBUG +#define dprintf(fmt, args...) do { printf("%s(): ", __func__); \ + printf(fmt,##args); } while (0) +#else +#define dprintf(fmt, args...) +#endif + +struct bcm_sdhci_dmamap_arg { + bus_addr_t sc_dma_busaddr; +}; + +struct bcm_sdhci_softc { + device_t sc_dev; + struct mtx sc_mtx; + struct resource * sc_mem_res; + struct resource * sc_irq_res; + bus_space_tag_t sc_bst; + bus_space_handle_t sc_bsh; + void * sc_intrhand; + struct mmc_request * sc_req; + struct mmc_data * sc_data; + uint32_t sc_flags; +#define LPC_SD_FLAGS_IGNORECRC (1 << 0) + int sc_xfer_direction; +#define DIRECTION_READ 0 +#define DIRECTION_WRITE 1 + int sc_xfer_done; + int sc_bus_busy; + struct sdhci_slot sc_slot; +}; + +#define SD_MAX_BLOCKSIZE 1024 +/* XXX */ + +static int bcm_sdhci_probe(device_t); +static int bcm_sdhci_attach(device_t); +static int bcm_sdhci_detach(device_t); +static void bcm_sdhci_intr(void *); + +static int bcm_sdhci_get_ro(device_t, device_t); + +#define bcm_sdhci_lock(_sc) \ + mtx_lock(&_sc->sc_mtx); +#define bcm_sdhci_unlock(_sc) \ + mtx_unlock(&_sc->sc_mtx); + +static int +bcm_sdhci_probe(device_t dev) +{ + if (!ofw_bus_is_compatible(dev, "broadcom,bcm2835-sdhci")) + return (ENXIO); + + device_set_desc(dev, "Broadcom 2708 SDHCI controller"); + return (BUS_PROBE_DEFAULT); +} + +static int +bcm_sdhci_attach(device_t dev) +{ + struct bcm_sdhci_softc *sc = device_get_softc(dev); + int rid, err; + + sc->sc_dev = dev; + sc->sc_req = NULL; + + mtx_init(&sc->sc_mtx, "bcm sdhci", "sdhci", MTX_DEF); + + rid = 0; + sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, + RF_ACTIVE); + if (!sc->sc_mem_res) { + device_printf(dev, "cannot allocate memory window\n"); + err = ENXIO; + goto fail; + } + + sc->sc_bst = rman_get_bustag(sc->sc_mem_res); + sc->sc_bsh = rman_get_bushandle(sc->sc_mem_res); + + rid = 0; + sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, + RF_ACTIVE); + if (!sc->sc_irq_res) { + device_printf(dev, "cannot allocate interrupt\n"); + bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res); + err = ENXIO; + goto fail; + } + + if (bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_MISC | INTR_MPSAFE, + NULL, bcm_sdhci_intr, sc, &sc->sc_intrhand)) + { + bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res); + bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res); + device_printf(dev, "cannot setup interrupt handler\n"); + err = ENXIO; + goto fail; + } + + sc->sc_slot.caps = SDHCI_CAN_VDD_330 | SDHCI_CAN_VDD_180 | SDHCI_CAN_DO_HISPD; + sc->sc_slot.caps |= (50 << SDHCI_CLOCK_BASE_SHIFT); + sc->sc_slot.quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK + | SDHCI_QUIRK_BROKEN_TIMEOUT_VAL + | SDHCI_QUIRK_MISSING_CAPS; + + sdhci_init_slot(dev, &sc->sc_slot, 0); + + bus_generic_probe(dev); + bus_generic_attach(dev); + + sdhci_start_slot(&sc->sc_slot); + + return (0); + +fail: + if (sc->sc_intrhand) + bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_intrhand); + if (sc->sc_irq_res) + bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res); + if (sc->sc_mem_res) + bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res); + + return (err); +} + +static int +bcm_sdhci_detach(device_t dev) +{ + + return (EBUSY); +} + +static void +bcm_sdhci_intr(void *arg) +{ + struct bcm_sdhci_softc *sc = arg; + + sdhci_generic_intr(&sc->sc_slot); +} + +static int +bcm_sdhci_get_ro(device_t bus, device_t child) +{ + + return (0); +} + +static inline uint32_t +RD4(struct bcm_sdhci_softc *sc, bus_size_t off) +{ + uint32_t val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, off); + return val; +} + +static inline void +WR4(struct bcm_sdhci_softc *sc, bus_size_t off, uint32_t val) +{ + bus_space_write_4(sc->sc_bst, sc->sc_bsh, off, val); + + if ((off != SDHCI_BUFFER && off != SDHCI_INT_STATUS && off != SDHCI_CLOCK_CONTROL)) + { + int timeout = 100000; + while (val != bus_space_read_4(sc->sc_bst, sc->sc_bsh, off) + && --timeout > 0) + continue; + + if (timeout <= 0) + printf("sdhci_brcm: writing 0x%X to reg 0x%X " + "always gives 0x%X\n", + val, (uint32_t)off, + bus_space_read_4(sc->sc_bst, sc->sc_bsh, off)); + } +} + +static uint8_t +bcm_sdhci_read_1(device_t dev, struct sdhci_slot *slot, bus_size_t off) +{ + struct bcm_sdhci_softc *sc = device_get_softc(dev); + uint32_t val = RD4(sc, off & ~3); + + return ((val >> (off & 3)*8) & 0xff); +} + +static uint16_t +bcm_sdhci_read_2(device_t dev, struct sdhci_slot *slot, bus_size_t off) +{ + struct bcm_sdhci_softc *sc = device_get_softc(dev); + uint32_t val = RD4(sc, off & ~3); + + return ((val >> (off & 3)*8) & 0xffff); +} + +static uint32_t +bcm_sdhci_read_4(device_t dev, struct sdhci_slot *slot, bus_size_t off) +{ + struct bcm_sdhci_softc *sc = device_get_softc(dev); + + return RD4(sc, off); +} + +static void +bcm_sdhci_read_multi_4(device_t dev, struct sdhci_slot *slot, bus_size_t off, + uint32_t *data, bus_size_t count) +{ + struct bcm_sdhci_softc *sc = device_get_softc(dev); + + bus_space_read_multi_4(sc->sc_bst, sc->sc_bsh, off, data, count); +} + +static void +bcm_sdhci_write_1(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint8_t val) +{ + struct bcm_sdhci_softc *sc = device_get_softc(dev); + uint32_t val32 = RD4(sc, off & ~3); + val32 &= ~(0xff << (off & 3)*8); + val32 |= (val << (off & 3)*8); + WR4(sc, off & ~3, val32); +} + +static void +bcm_sdhci_write_2(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint16_t val) +{ + struct bcm_sdhci_softc *sc = device_get_softc(dev); + static uint32_t cmd_and_trandfer_mode; + uint32_t val32; + if (off == SDHCI_COMMAND_FLAGS) + val32 = cmd_and_trandfer_mode; + else + val32 = RD4(sc, off & ~3); + val32 &= ~(0xffff << (off & 3)*8); + val32 |= (val << (off & 3)*8); + if (off == SDHCI_TRANSFER_MODE) + cmd_and_trandfer_mode = val32; + else + WR4(sc, off & ~3, val32); +} + +static void +bcm_sdhci_write_4(device_t dev, struct sdhci_slot *slot, bus_size_t off, uint32_t val) +{ + struct bcm_sdhci_softc *sc = device_get_softc(dev); + WR4(sc, off, val); +} + +static void +bcm_sdhci_write_multi_4(device_t dev, struct sdhci_slot *slot, bus_size_t off, + uint32_t *data, bus_size_t count) +{ + struct bcm_sdhci_softc *sc = device_get_softc(dev); + + bus_space_write_multi_4(sc->sc_bst, sc->sc_bsh, off, data, count); +} + +static device_method_t bcm_sdhci_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, bcm_sdhci_probe), + DEVMETHOD(device_attach, bcm_sdhci_attach), + DEVMETHOD(device_detach, bcm_sdhci_detach), + + /* Bus interface */ + DEVMETHOD(bus_read_ivar, sdhci_generic_read_ivar), + DEVMETHOD(bus_write_ivar, sdhci_generic_write_ivar), + DEVMETHOD(bus_print_child, bus_generic_print_child), + + /* MMC bridge interface */ + DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios), + DEVMETHOD(mmcbr_request, sdhci_generic_request), + DEVMETHOD(mmcbr_get_ro, bcm_sdhci_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, bcm_sdhci_read_1), + DEVMETHOD(sdhci_read_2, bcm_sdhci_read_2), + DEVMETHOD(sdhci_read_4, bcm_sdhci_read_4), + DEVMETHOD(sdhci_read_multi_4, bcm_sdhci_read_multi_4), + DEVMETHOD(sdhci_write_1, bcm_sdhci_write_1), + DEVMETHOD(sdhci_write_2, bcm_sdhci_write_2), + DEVMETHOD(sdhci_write_4, bcm_sdhci_write_4), + DEVMETHOD(sdhci_write_multi_4, bcm_sdhci_write_multi_4), + + { 0, 0 } +}; + +static devclass_t bcm_sdhci_devclass; + +static driver_t bcm_sdhci_driver = { + "sdhci_bcm", + bcm_sdhci_methods, + sizeof(struct bcm_sdhci_softc), +}; + +DRIVER_MODULE(sdhci_bcm, simplebus, bcm_sdhci_driver, bcm_sdhci_devclass, 0, 0); +MODULE_DEPEND(sdhci_bcm, sdhci, 1, 1, 1); Modified: head/sys/arm/broadcom/bcm2835/files.bcm2835 ============================================================================== --- head/sys/arm/broadcom/bcm2835/files.bcm2835 Mon Oct 29 17:21:58 2012 (r242320) +++ head/sys/arm/broadcom/bcm2835/files.bcm2835 Mon Oct 29 17:23:45 2012 (r242321) @@ -4,6 +4,7 @@ arm/broadcom/bcm2835/bcm2835_fb.c optio arm/broadcom/bcm2835/bcm2835_intr.c standard arm/broadcom/bcm2835/bcm2835_machdep.c standard arm/broadcom/bcm2835/bcm2835_mbox.c standard +arm/broadcom/bcm2835/bcm2835_sdhci.c optional sdhci arm/broadcom/bcm2835/bcm2835_systimer.c standard arm/broadcom/bcm2835/bcm2835_wdog.c standard arm/broadcom/bcm2835/bus_space.c optional fdt Modified: head/sys/arm/conf/RPI-B ============================================================================== --- head/sys/arm/conf/RPI-B Mon Oct 29 17:21:58 2012 (r242320) +++ head/sys/arm/conf/RPI-B Mon Oct 29 17:23:45 2012 (r242321) @@ -61,7 +61,7 @@ options SYSVMSG #SYSV-style message q options SYSVSEM #SYSV-style semaphores options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions options KBD_INSTALL_CDEV # install a CDEV entry in /dev -#options ROOTDEVNAME=\"ufs:/dev/da0s1a\" +#options ROOTDEVNAME=\"ufs:mmcsd0s2\" options PREEMPTION @@ -80,6 +80,10 @@ device pty # options SC_DFLT_FONT # compile font in # makeoptions SC_DFLT_FONT=cp437 +device sdhci +device mmc +device mmcsd + options KDB options DDB #Enable the kernel debugger options INVARIANTS #Enable calls of extra sanity checking Modified: head/sys/dev/mmc/mmc.c ============================================================================== --- head/sys/dev/mmc/mmc.c Mon Oct 29 17:21:58 2012 (r242320) +++ head/sys/dev/mmc/mmc.c Mon Oct 29 17:23:45 2012 (r242321) @@ -1731,3 +1731,4 @@ static devclass_t mmc_devclass; DRIVER_MODULE(mmc, ti_mmchs, mmc_driver, mmc_devclass, NULL, NULL); DRIVER_MODULE(mmc, at91_mci, mmc_driver, mmc_devclass, NULL, NULL); DRIVER_MODULE(mmc, sdhci_pci, mmc_driver, mmc_devclass, NULL, NULL); +DRIVER_MODULE(mmc, sdhci_bcm, mmc_driver, mmc_devclass, NULL, NULL);
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