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-rw-r--r--freebsd/sys/dev/mmc/mmc.c1758
1 files changed, 1758 insertions, 0 deletions
diff --git a/freebsd/sys/dev/mmc/mmc.c b/freebsd/sys/dev/mmc/mmc.c
new file mode 100644
index 00000000..15175ba8
--- /dev/null
+++ b/freebsd/sys/dev/mmc/mmc.c
@@ -0,0 +1,1758 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/*-
+ * Copyright (c) 2006 Bernd Walter. All rights reserved.
+ * Copyright (c) 2006 M. Warner Losh. 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.
+ *
+ * Portions of this software may have been developed with reference to
+ * the SD Simplified Specification. The following disclaimer may apply:
+ *
+ * The following conditions apply to the release of the simplified
+ * specification ("Simplified Specification") by the SD Card Association and
+ * the SD Group. The Simplified Specification is a subset of the complete SD
+ * Specification which is owned by the SD Card Association and the SD
+ * Group. This Simplified Specification is provided on a non-confidential
+ * basis subject to the disclaimers below. Any implementation of the
+ * Simplified Specification may require a license from the SD Card
+ * Association, SD Group, SD-3C LLC or other third parties.
+ *
+ * Disclaimers:
+ *
+ * The information contained in the Simplified Specification is presented only
+ * as a standard specification for SD Cards and SD Host/Ancillary products and
+ * is provided "AS-IS" without any representations or warranties of any
+ * kind. No responsibility is assumed by the SD Group, SD-3C LLC or the SD
+ * Card Association for any damages, any infringements of patents or other
+ * right of the SD Group, SD-3C LLC, the SD Card Association or any third
+ * parties, which may result from its use. No license is granted by
+ * implication, estoppel or otherwise under any patent or other rights of the
+ * SD Group, SD-3C LLC, the SD Card Association or any third party. Nothing
+ * herein shall be construed as an obligation by the SD Group, the SD-3C LLC
+ * or the SD Card Association to disclose or distribute any technical
+ * information, know-how or other confidential information to any third party.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <rtems/bsd/sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <rtems/bsd/sys/lock.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/bus.h>
+#include <sys/endian.h>
+#include <sys/sysctl.h>
+#ifdef __rtems__
+#include <sys/condvar.h>
+#endif /* __rtems__ */
+
+#include <dev/mmc/mmcreg.h>
+#include <dev/mmc/mmcbrvar.h>
+#include <dev/mmc/mmcvar.h>
+#include <rtems/bsd/local/mmcbr_if.h>
+#include <rtems/bsd/local/mmcbus_if.h>
+
+struct mmc_softc {
+ device_t dev;
+ struct mtx sc_mtx;
+ struct intr_config_hook config_intrhook;
+ device_t owner;
+ uint32_t last_rca;
+#ifdef __rtems__
+ struct cv req_done;
+#endif /* __rtems__ */
+};
+
+/*
+ * Per-card data
+ */
+struct mmc_ivars {
+ uint32_t raw_cid[4]; /* Raw bits of the CID */
+ uint32_t raw_csd[4]; /* Raw bits of the CSD */
+ uint32_t raw_scr[2]; /* Raw bits of the SCR */
+ uint8_t raw_ext_csd[512]; /* Raw bits of the EXT_CSD */
+ uint32_t raw_sd_status[16]; /* Raw bits of the SD_STATUS */
+ uint16_t rca;
+ enum mmc_card_mode mode;
+ struct mmc_cid cid; /* cid decoded */
+ struct mmc_csd csd; /* csd decoded */
+ struct mmc_scr scr; /* scr decoded */
+ struct mmc_sd_status sd_status; /* SD_STATUS decoded */
+ u_char read_only; /* True when the device is read-only */
+ u_char bus_width; /* Bus width to use */
+ u_char timing; /* Bus timing support */
+ u_char high_cap; /* High Capacity card (block addressed) */
+ uint32_t sec_count; /* Card capacity in 512byte blocks */
+ uint32_t tran_speed; /* Max speed in normal mode */
+ uint32_t hs_tran_speed; /* Max speed in high speed mode */
+ uint32_t erase_sector; /* Card native erase sector size */
+ char card_id_string[64];/* Formatted CID info (serial, MFG, etc) */
+};
+
+#define CMD_RETRIES 3
+
+static SYSCTL_NODE(_hw, OID_AUTO, mmc, CTLFLAG_RD, NULL, "mmc driver");
+
+static int mmc_debug;
+SYSCTL_INT(_hw_mmc, OID_AUTO, debug, CTLFLAG_RW, &mmc_debug, 0, "Debug level");
+
+/* bus entry points */
+static int mmc_acquire_bus(device_t busdev, device_t dev);
+static int mmc_attach(device_t dev);
+static int mmc_child_location_str(device_t dev, device_t child, char *buf,
+ size_t buflen);
+static int mmc_detach(device_t dev);
+static int mmc_probe(device_t dev);
+static int mmc_read_ivar(device_t bus, device_t child, int which,
+ uintptr_t *result);
+static int mmc_release_bus(device_t busdev, device_t dev);
+static int mmc_resume(device_t dev);
+static int mmc_suspend(device_t dev);
+static int mmc_wait_for_request(device_t brdev, device_t reqdev,
+ struct mmc_request *req);
+static int mmc_write_ivar(device_t bus, device_t child, int which,
+ uintptr_t value);
+
+#define MMC_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
+#define MMC_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
+#define MMC_LOCK_INIT(_sc) \
+ mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->dev), \
+ "mmc", MTX_DEF)
+#define MMC_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
+#define MMC_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED);
+#define MMC_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
+
+static int mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid);
+static void mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr);
+static void mmc_app_decode_sd_status(uint32_t *raw_sd_status,
+ struct mmc_sd_status *sd_status);
+static int mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca,
+ uint32_t *rawsdstatus);
+static int mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca,
+ uint32_t *rawscr);
+static int mmc_calculate_clock(struct mmc_softc *sc);
+static void mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid);
+static void mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid);
+static void mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd);
+static void mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd);
+static void mmc_delayed_attach(void *xsc);
+static int mmc_delete_cards(struct mmc_softc *sc);
+static void mmc_discover_cards(struct mmc_softc *sc);
+static void mmc_format_card_id_string(struct mmc_ivars *ivar);
+static void mmc_go_discovery(struct mmc_softc *sc);
+static uint32_t mmc_get_bits(uint32_t *bits, int bit_len, int start,
+ int size);
+static int mmc_highest_voltage(uint32_t ocr);
+static void mmc_idle_cards(struct mmc_softc *sc);
+static void mmc_ms_delay(int ms);
+static void mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard);
+static void mmc_power_down(struct mmc_softc *sc);
+static void mmc_power_up(struct mmc_softc *sc);
+static void mmc_rescan_cards(struct mmc_softc *sc);
+static void mmc_scan(struct mmc_softc *sc);
+static int mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp,
+ uint8_t value, uint8_t *res);
+static int mmc_select_card(struct mmc_softc *sc, uint16_t rca);
+static uint32_t mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr);
+static int mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr,
+ uint32_t *rocr);
+static int mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd);
+static int mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd);
+static int mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs);
+static int mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr,
+ uint32_t *rocr);
+static int mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp);
+static int mmc_send_status(struct mmc_softc *sc, uint16_t rca,
+ uint32_t *status);
+static int mmc_set_blocklen(struct mmc_softc *sc, uint32_t len);
+static int mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca,
+ int width);
+static int mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp);
+static int mmc_set_timing(struct mmc_softc *sc, int timing);
+static int mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index,
+ uint8_t value);
+static int mmc_test_bus_width(struct mmc_softc *sc);
+static int mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca,
+ struct mmc_command *cmd, int retries);
+static int mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd,
+ int retries);
+static int mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
+ uint32_t arg, uint32_t flags, uint32_t *resp, int retries);
+static int mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req);
+static void mmc_wakeup(struct mmc_request *req);
+
+static void
+mmc_ms_delay(int ms)
+{
+
+ DELAY(1000 * ms); /* XXX BAD */
+}
+
+static int
+mmc_probe(device_t dev)
+{
+
+ device_set_desc(dev, "MMC/SD bus");
+ return (0);
+}
+
+static int
+mmc_attach(device_t dev)
+{
+ struct mmc_softc *sc;
+
+ sc = device_get_softc(dev);
+ sc->dev = dev;
+ MMC_LOCK_INIT(sc);
+#ifdef __rtems__
+ cv_init(&sc->req_done, "MMC request done");
+#endif /* __rtems__ */
+
+ /* We'll probe and attach our children later, but before / mount */
+ sc->config_intrhook.ich_func = mmc_delayed_attach;
+ sc->config_intrhook.ich_arg = sc;
+ if (config_intrhook_establish(&sc->config_intrhook) != 0)
+ device_printf(dev, "config_intrhook_establish failed\n");
+ return (0);
+}
+
+static int
+mmc_detach(device_t dev)
+{
+ struct mmc_softc *sc = device_get_softc(dev);
+ int err;
+
+ if ((err = mmc_delete_cards(sc)) != 0)
+ return (err);
+ mmc_power_down(sc);
+#ifdef __rtems__
+ cv_destroy(&sc->req_done);
+#endif /* __rtems__ */
+ MMC_LOCK_DESTROY(sc);
+
+ return (0);
+}
+
+static int
+mmc_suspend(device_t dev)
+{
+ struct mmc_softc *sc = device_get_softc(dev);
+ int err;
+
+ err = bus_generic_suspend(dev);
+ if (err)
+ return (err);
+ mmc_power_down(sc);
+ return (0);
+}
+
+static int
+mmc_resume(device_t dev)
+{
+ struct mmc_softc *sc = device_get_softc(dev);
+
+ mmc_scan(sc);
+ return (bus_generic_resume(dev));
+}
+
+static int
+mmc_acquire_bus(device_t busdev, device_t dev)
+{
+ struct mmc_softc *sc;
+ struct mmc_ivars *ivar;
+ int err;
+ int rca;
+
+ err = MMCBR_ACQUIRE_HOST(device_get_parent(busdev), busdev);
+ if (err)
+ return (err);
+ sc = device_get_softc(busdev);
+ MMC_LOCK(sc);
+ if (sc->owner)
+ panic("mmc: host bridge didn't serialize us.");
+ sc->owner = dev;
+ MMC_UNLOCK(sc);
+
+ if (busdev != dev) {
+ /*
+ * Keep track of the last rca that we've selected. If
+ * we're asked to do it again, don't. We never
+ * unselect unless the bus code itself wants the mmc
+ * bus, and constantly reselecting causes problems.
+ */
+ rca = mmc_get_rca(dev);
+ if (sc->last_rca != rca) {
+ mmc_select_card(sc, rca);
+ sc->last_rca = rca;
+ /* Prepare bus width for the new card. */
+ ivar = device_get_ivars(dev);
+ if (bootverbose || mmc_debug) {
+ device_printf(busdev,
+ "setting bus width to %d bits\n",
+ (ivar->bus_width == bus_width_4) ? 4 :
+ (ivar->bus_width == bus_width_8) ? 8 : 1);
+ }
+ mmc_set_card_bus_width(sc, rca, ivar->bus_width);
+ mmcbr_set_bus_width(busdev, ivar->bus_width);
+ mmcbr_update_ios(busdev);
+ }
+ } else {
+ /*
+ * If there's a card selected, stand down.
+ */
+ if (sc->last_rca != 0) {
+ mmc_select_card(sc, 0);
+ sc->last_rca = 0;
+ }
+ }
+
+ return (0);
+}
+
+static int
+mmc_release_bus(device_t busdev, device_t dev)
+{
+ struct mmc_softc *sc;
+ int err;
+
+ sc = device_get_softc(busdev);
+
+ MMC_LOCK(sc);
+ if (!sc->owner)
+ panic("mmc: releasing unowned bus.");
+ if (sc->owner != dev)
+ panic("mmc: you don't own the bus. game over.");
+ MMC_UNLOCK(sc);
+ err = MMCBR_RELEASE_HOST(device_get_parent(busdev), busdev);
+ if (err)
+ return (err);
+ MMC_LOCK(sc);
+ sc->owner = NULL;
+ MMC_UNLOCK(sc);
+ return (0);
+}
+
+static uint32_t
+mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr)
+{
+
+ return (ocr & MMC_OCR_VOLTAGE);
+}
+
+static int
+mmc_highest_voltage(uint32_t ocr)
+{
+ int i;
+
+ for (i = 30; i >= 0; i--)
+ if (ocr & (1 << i))
+ return (i);
+ return (-1);
+}
+
+static void
+mmc_wakeup(struct mmc_request *req)
+{
+ struct mmc_softc *sc;
+
+ sc = (struct mmc_softc *)req->done_data;
+ MMC_LOCK(sc);
+ req->flags |= MMC_REQ_DONE;
+#ifdef __rtems__
+ cv_broadcast(&sc->req_done);
+#endif /* __rtems__ */
+ MMC_UNLOCK(sc);
+#ifndef __rtems__
+ wakeup(req);
+#endif /* __rtems__ */
+}
+
+static int
+mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req)
+{
+
+ req->done = mmc_wakeup;
+ req->done_data = sc;
+ if (mmc_debug > 1) {
+ device_printf(sc->dev, "REQUEST: CMD%d arg %#x flags %#x",
+ req->cmd->opcode, req->cmd->arg, req->cmd->flags);
+ if (req->cmd->data) {
+ printf(" data %d\n", (int)req->cmd->data->len);
+ } else
+ printf("\n");
+ }
+ MMCBR_REQUEST(device_get_parent(sc->dev), sc->dev, req);
+ MMC_LOCK(sc);
+ while ((req->flags & MMC_REQ_DONE) == 0)
+#ifndef __rtems__
+ msleep(req, &sc->sc_mtx, 0, "mmcreq", 0);
+#else /* __rtems__ */
+ cv_wait(&sc->req_done, &sc->sc_mtx);
+#endif /* __rtems__ */
+ MMC_UNLOCK(sc);
+ if (mmc_debug > 2 || (mmc_debug > 1 && req->cmd->error))
+ device_printf(sc->dev, "RESULT: %d\n", req->cmd->error);
+ return (0);
+}
+
+static int
+mmc_wait_for_request(device_t brdev, device_t reqdev, struct mmc_request *req)
+{
+ struct mmc_softc *sc = device_get_softc(brdev);
+
+ return (mmc_wait_for_req(sc, req));
+}
+
+static int
+mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd, int retries)
+{
+ struct mmc_request mreq;
+
+ memset(&mreq, 0, sizeof(mreq));
+ memset(cmd->resp, 0, sizeof(cmd->resp));
+ cmd->retries = retries;
+ mreq.cmd = cmd;
+ mmc_wait_for_req(sc, &mreq);
+ return (cmd->error);
+}
+
+static int
+mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca,
+ struct mmc_command *cmd, int retries)
+{
+ struct mmc_command appcmd;
+ int err = MMC_ERR_NONE, i;
+
+ for (i = 0; i <= retries; i++) {
+ appcmd.opcode = MMC_APP_CMD;
+ appcmd.arg = rca << 16;
+ appcmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+ appcmd.data = NULL;
+ mmc_wait_for_cmd(sc, &appcmd, 0);
+ err = appcmd.error;
+ if (err != MMC_ERR_NONE)
+ continue;
+ if (!(appcmd.resp[0] & R1_APP_CMD))
+ return MMC_ERR_FAILED;
+ mmc_wait_for_cmd(sc, cmd, 0);
+ err = cmd->error;
+ if (err == MMC_ERR_NONE)
+ break;
+ }
+ return (err);
+}
+
+static int
+mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
+ uint32_t arg, uint32_t flags, uint32_t *resp, int retries)
+{
+ struct mmc_command cmd;
+ int err;
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.opcode = opcode;
+ cmd.arg = arg;
+ cmd.flags = flags;
+ cmd.data = NULL;
+ err = mmc_wait_for_cmd(sc, &cmd, retries);
+ if (err)
+ return (err);
+ if (cmd.error)
+ return (cmd.error);
+ if (resp) {
+ if (flags & MMC_RSP_136)
+ memcpy(resp, cmd.resp, 4 * sizeof(uint32_t));
+ else
+ *resp = cmd.resp[0];
+ }
+ return (0);
+}
+
+static void
+mmc_idle_cards(struct mmc_softc *sc)
+{
+ device_t dev;
+ struct mmc_command cmd;
+
+ dev = sc->dev;
+ mmcbr_set_chip_select(dev, cs_high);
+ mmcbr_update_ios(dev);
+ mmc_ms_delay(1);
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.opcode = MMC_GO_IDLE_STATE;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_NONE | MMC_CMD_BC;
+ cmd.data = NULL;
+ mmc_wait_for_cmd(sc, &cmd, 0);
+ mmc_ms_delay(1);
+
+ mmcbr_set_chip_select(dev, cs_dontcare);
+ mmcbr_update_ios(dev);
+ mmc_ms_delay(1);
+}
+
+static int
+mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
+{
+ struct mmc_command cmd;
+ int err = MMC_ERR_NONE, i;
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.opcode = ACMD_SD_SEND_OP_COND;
+ cmd.arg = ocr;
+ cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
+ cmd.data = NULL;
+
+ for (i = 0; i < 1000; i++) {
+ err = mmc_wait_for_app_cmd(sc, 0, &cmd, CMD_RETRIES);
+ if (err != MMC_ERR_NONE)
+ break;
+ if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
+ (ocr & MMC_OCR_VOLTAGE) == 0)
+ break;
+ err = MMC_ERR_TIMEOUT;
+ mmc_ms_delay(10);
+ }
+ if (rocr && err == MMC_ERR_NONE)
+ *rocr = cmd.resp[0];
+ return (err);
+}
+
+static int
+mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
+{
+ struct mmc_command cmd;
+ int err = MMC_ERR_NONE, i;
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.opcode = MMC_SEND_OP_COND;
+ cmd.arg = ocr;
+ cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
+ cmd.data = NULL;
+
+ for (i = 0; i < 1000; i++) {
+ err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
+ if (err != MMC_ERR_NONE)
+ break;
+ if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
+ (ocr & MMC_OCR_VOLTAGE) == 0)
+ break;
+ err = MMC_ERR_TIMEOUT;
+ mmc_ms_delay(10);
+ }
+ if (rocr && err == MMC_ERR_NONE)
+ *rocr = cmd.resp[0];
+ return (err);
+}
+
+static int
+mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs)
+{
+ struct mmc_command cmd;
+ int err;
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.opcode = SD_SEND_IF_COND;
+ cmd.arg = (vhs << 8) + 0xAA;
+ cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR;
+ cmd.data = NULL;
+
+ err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
+ return (err);
+}
+
+static void
+mmc_power_up(struct mmc_softc *sc)
+{
+ device_t dev;
+
+ dev = sc->dev;
+ mmcbr_set_vdd(dev, mmc_highest_voltage(mmcbr_get_host_ocr(dev)));
+ mmcbr_set_bus_mode(dev, opendrain);
+ mmcbr_set_chip_select(dev, cs_dontcare);
+ mmcbr_set_bus_width(dev, bus_width_1);
+ mmcbr_set_power_mode(dev, power_up);
+ mmcbr_set_clock(dev, 0);
+ mmcbr_update_ios(dev);
+ mmc_ms_delay(1);
+
+ mmcbr_set_clock(dev, mmcbr_get_f_min(sc->dev));
+ mmcbr_set_timing(dev, bus_timing_normal);
+ mmcbr_set_power_mode(dev, power_on);
+ mmcbr_update_ios(dev);
+ mmc_ms_delay(2);
+}
+
+static void
+mmc_power_down(struct mmc_softc *sc)
+{
+ device_t dev = sc->dev;
+
+ mmcbr_set_bus_mode(dev, opendrain);
+ mmcbr_set_chip_select(dev, cs_dontcare);
+ mmcbr_set_bus_width(dev, bus_width_1);
+ mmcbr_set_power_mode(dev, power_off);
+ mmcbr_set_clock(dev, 0);
+ mmcbr_set_timing(dev, bus_timing_normal);
+ mmcbr_update_ios(dev);
+}
+
+static int
+mmc_select_card(struct mmc_softc *sc, uint16_t rca)
+{
+ int flags;
+
+ flags = (rca ? MMC_RSP_R1B : MMC_RSP_NONE) | MMC_CMD_AC;
+ return (mmc_wait_for_command(sc, MMC_SELECT_CARD, (uint32_t)rca << 16,
+ flags, NULL, CMD_RETRIES));
+}
+
+static int
+mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index, uint8_t value)
+{
+ struct mmc_command cmd;
+ int err;
+
+ cmd.opcode = MMC_SWITCH_FUNC;
+ cmd.arg = (MMC_SWITCH_FUNC_WR << 24) |
+ (index << 16) |
+ (value << 8) |
+ set;
+ cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
+ cmd.data = NULL;
+ err = mmc_wait_for_cmd(sc, &cmd, 0);
+ return (err);
+}
+
+static int
+mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp, uint8_t value,
+ uint8_t *res)
+{
+ int err;
+ struct mmc_command cmd;
+ struct mmc_data data;
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ memset(&data, 0, sizeof(struct mmc_data));
+ memset(res, 0, 64);
+
+ cmd.opcode = SD_SWITCH_FUNC;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.arg = mode << 31; /* 0 - check, 1 - set */
+ cmd.arg |= 0x00FFFFFF;
+ cmd.arg &= ~(0xF << (grp * 4));
+ cmd.arg |= value << (grp * 4);
+ cmd.data = &data;
+
+ data.data = res;
+ data.len = 64;
+ data.flags = MMC_DATA_READ;
+
+ err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
+ return (err);
+}
+
+static int
+mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, int width)
+{
+ struct mmc_command cmd;
+ int err;
+ uint8_t value;
+
+ if (mmcbr_get_mode(sc->dev) == mode_sd) {
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ cmd.opcode = ACMD_SET_CLR_CARD_DETECT;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+ cmd.arg = SD_CLR_CARD_DETECT;
+ err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
+ if (err != 0)
+ return (err);
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ cmd.opcode = ACMD_SET_BUS_WIDTH;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+ switch (width) {
+ case bus_width_1:
+ cmd.arg = SD_BUS_WIDTH_1;
+ break;
+ case bus_width_4:
+ cmd.arg = SD_BUS_WIDTH_4;
+ break;
+ default:
+ return (MMC_ERR_INVALID);
+ }
+ err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
+ } else {
+ switch (width) {
+ case bus_width_1:
+ value = EXT_CSD_BUS_WIDTH_1;
+ break;
+ case bus_width_4:
+ value = EXT_CSD_BUS_WIDTH_4;
+ break;
+ case bus_width_8:
+ value = EXT_CSD_BUS_WIDTH_8;
+ break;
+ default:
+ return (MMC_ERR_INVALID);
+ }
+ err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
+ value);
+ }
+ return (err);
+}
+
+static int
+mmc_set_timing(struct mmc_softc *sc, int timing)
+{
+ int err;
+ uint8_t value;
+ u_char switch_res[64];
+
+ switch (timing) {
+ case bus_timing_normal:
+ value = 0;
+ break;
+ case bus_timing_hs:
+ value = 1;
+ break;
+ default:
+ return (MMC_ERR_INVALID);
+ }
+ if (mmcbr_get_mode(sc->dev) == mode_sd)
+ err = mmc_sd_switch(sc, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1,
+ value, switch_res);
+ else
+ err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_HS_TIMING, value);
+ return (err);
+}
+
+static int
+mmc_test_bus_width(struct mmc_softc *sc)
+{
+ struct mmc_command cmd;
+ struct mmc_data data;
+ int err;
+ uint8_t buf[8];
+ uint8_t p8[8] = { 0x55, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+ uint8_t p8ok[8] = { 0xAA, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+ uint8_t p4[4] = { 0x5A, 0x00, 0x00, 0x00, };
+ uint8_t p4ok[4] = { 0xA5, 0x00, 0x00, 0x00, };
+
+ if (mmcbr_get_caps(sc->dev) & MMC_CAP_8_BIT_DATA) {
+ mmcbr_set_bus_width(sc->dev, bus_width_8);
+ mmcbr_update_ios(sc->dev);
+
+ cmd.opcode = MMC_BUSTEST_W;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.data = &data;
+
+ data.data = p8;
+ data.len = 8;
+ data.flags = MMC_DATA_WRITE;
+ mmc_wait_for_cmd(sc, &cmd, 0);
+
+ cmd.opcode = MMC_BUSTEST_R;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.data = &data;
+
+ data.data = buf;
+ data.len = 8;
+ data.flags = MMC_DATA_READ;
+ err = mmc_wait_for_cmd(sc, &cmd, 0);
+
+ mmcbr_set_bus_width(sc->dev, bus_width_1);
+ mmcbr_update_ios(sc->dev);
+
+ if (err == MMC_ERR_NONE && memcmp(buf, p8ok, 8) == 0)
+ return (bus_width_8);
+ }
+
+ if (mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) {
+ mmcbr_set_bus_width(sc->dev, bus_width_4);
+ mmcbr_update_ios(sc->dev);
+
+ cmd.opcode = MMC_BUSTEST_W;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.data = &data;
+
+ data.data = p4;
+ data.len = 4;
+ data.flags = MMC_DATA_WRITE;
+ mmc_wait_for_cmd(sc, &cmd, 0);
+
+ cmd.opcode = MMC_BUSTEST_R;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.data = &data;
+
+ data.data = buf;
+ data.len = 4;
+ data.flags = MMC_DATA_READ;
+ err = mmc_wait_for_cmd(sc, &cmd, 0);
+
+ mmcbr_set_bus_width(sc->dev, bus_width_1);
+ mmcbr_update_ios(sc->dev);
+
+ if (err == MMC_ERR_NONE && memcmp(buf, p4ok, 4) == 0)
+ return (bus_width_4);
+ }
+ return (bus_width_1);
+}
+
+static uint32_t
+mmc_get_bits(uint32_t *bits, int bit_len, int start, int size)
+{
+ const int i = (bit_len / 32) - (start / 32) - 1;
+ const int shift = start & 31;
+ uint32_t retval = bits[i] >> shift;
+ if (size + shift > 32)
+ retval |= bits[i - 1] << (32 - shift);
+ return (retval & ((1llu << size) - 1));
+}
+
+static void
+mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid)
+{
+ int i;
+
+ /* There's no version info, so we take it on faith */
+ memset(cid, 0, sizeof(*cid));
+ cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
+ cid->oid = mmc_get_bits(raw_cid, 128, 104, 16);
+ for (i = 0; i < 5; i++)
+ cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
+ cid->pnm[5] = 0;
+ cid->prv = mmc_get_bits(raw_cid, 128, 56, 8);
+ cid->psn = mmc_get_bits(raw_cid, 128, 24, 32);
+ cid->mdt_year = mmc_get_bits(raw_cid, 128, 12, 8) + 2000;
+ cid->mdt_month = mmc_get_bits(raw_cid, 128, 8, 4);
+}
+
+static void
+mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid)
+{
+ int i;
+
+ /* There's no version info, so we take it on faith */
+ memset(cid, 0, sizeof(*cid));
+ cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
+ cid->oid = mmc_get_bits(raw_cid, 128, 104, 8);
+ for (i = 0; i < 6; i++)
+ cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
+ cid->pnm[6] = 0;
+ cid->prv = mmc_get_bits(raw_cid, 128, 48, 8);
+ cid->psn = mmc_get_bits(raw_cid, 128, 16, 32);
+ cid->mdt_month = mmc_get_bits(raw_cid, 128, 12, 4);
+ cid->mdt_year = mmc_get_bits(raw_cid, 128, 8, 4) + 1997;
+}
+
+static void
+mmc_format_card_id_string(struct mmc_ivars *ivar)
+{
+ char oidstr[8];
+ uint8_t c1;
+ uint8_t c2;
+
+ /*
+ * Format a card ID string for use by the mmcsd driver, it's what
+ * appears between the <> in the following:
+ * mmcsd0: 968MB <SD SD01G 8.0 SN 2686905 Mfg 08/2008 by 3 TN> at mmc0
+ * 22.5MHz/4bit/128-block
+ *
+ * The card_id_string in mmc_ivars is currently allocated as 64 bytes,
+ * and our max formatted length is currently 55 bytes if every field
+ * contains the largest value.
+ *
+ * Sometimes the oid is two printable ascii chars; when it's not,
+ * format it as 0xnnnn instead.
+ */
+ c1 = (ivar->cid.oid >> 8) & 0x0ff;
+ c2 = ivar->cid.oid & 0x0ff;
+ if (c1 > 0x1f && c1 < 0x7f && c2 > 0x1f && c2 < 0x7f)
+ snprintf(oidstr, sizeof(oidstr), "%c%c", c1, c2);
+ else
+ snprintf(oidstr, sizeof(oidstr), "0x%04x", ivar->cid.oid);
+ snprintf(ivar->card_id_string, sizeof(ivar->card_id_string),
+ "%s%s %s %d.%d SN %u MFG %02d/%04d by %d %s",
+ ivar->mode == mode_sd ? "SD" : "MMC", ivar->high_cap ? "HC" : "",
+ ivar->cid.pnm, ivar->cid.prv >> 4, ivar->cid.prv & 0x0f,
+ ivar->cid.psn, ivar->cid.mdt_month, ivar->cid.mdt_year,
+ ivar->cid.mid, oidstr);
+}
+
+static const int exp[8] = {
+ 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
+};
+
+static const int mant[16] = {
+ 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80
+};
+
+static const int cur_min[8] = {
+ 500, 1000, 5000, 10000, 25000, 35000, 60000, 100000
+};
+
+static const int cur_max[8] = {
+ 1000, 5000, 10000, 25000, 35000, 45000, 800000, 200000
+};
+
+static void
+mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd)
+{
+ int v;
+ int m;
+ int e;
+
+ memset(csd, 0, sizeof(*csd));
+ csd->csd_structure = v = mmc_get_bits(raw_csd, 128, 126, 2);
+ if (v == 0) {
+ m = mmc_get_bits(raw_csd, 128, 115, 4);
+ e = mmc_get_bits(raw_csd, 128, 112, 3);
+ csd->tacc = (exp[e] * mant[m] + 9) / 10;
+ csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
+ m = mmc_get_bits(raw_csd, 128, 99, 4);
+ e = mmc_get_bits(raw_csd, 128, 96, 3);
+ csd->tran_speed = exp[e] * 10000 * mant[m];
+ csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
+ csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
+ csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
+ csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
+ csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
+ csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
+ csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
+ csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
+ csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
+ csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
+ m = mmc_get_bits(raw_csd, 128, 62, 12);
+ e = mmc_get_bits(raw_csd, 128, 47, 3);
+ csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
+ csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
+ csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
+ csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
+ csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
+ csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
+ csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
+ csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
+ } else if (v == 1) {
+ m = mmc_get_bits(raw_csd, 128, 115, 4);
+ e = mmc_get_bits(raw_csd, 128, 112, 3);
+ csd->tacc = (exp[e] * mant[m] + 9) / 10;
+ csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
+ m = mmc_get_bits(raw_csd, 128, 99, 4);
+ e = mmc_get_bits(raw_csd, 128, 96, 3);
+ csd->tran_speed = exp[e] * 10000 * mant[m];
+ csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
+ csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
+ csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
+ csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
+ csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
+ csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
+ csd->capacity = ((uint64_t)mmc_get_bits(raw_csd, 128, 48, 22) + 1) *
+ 512 * 1024;
+ csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
+ csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
+ csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
+ csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
+ csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
+ csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
+ csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
+ } else
+ panic("unknown SD CSD version");
+}
+
+static void
+mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd)
+{
+ int m;
+ int e;
+
+ memset(csd, 0, sizeof(*csd));
+ csd->csd_structure = mmc_get_bits(raw_csd, 128, 126, 2);
+ csd->spec_vers = mmc_get_bits(raw_csd, 128, 122, 4);
+ m = mmc_get_bits(raw_csd, 128, 115, 4);
+ e = mmc_get_bits(raw_csd, 128, 112, 3);
+ csd->tacc = exp[e] * mant[m] + 9 / 10;
+ csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
+ m = mmc_get_bits(raw_csd, 128, 99, 4);
+ e = mmc_get_bits(raw_csd, 128, 96, 3);
+ csd->tran_speed = exp[e] * 10000 * mant[m];
+ csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
+ csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
+ csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
+ csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
+ csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
+ csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
+ csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
+ csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
+ csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
+ csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
+ m = mmc_get_bits(raw_csd, 128, 62, 12);
+ e = mmc_get_bits(raw_csd, 128, 47, 3);
+ csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
+ csd->erase_blk_en = 0;
+ csd->erase_sector = (mmc_get_bits(raw_csd, 128, 42, 5) + 1) *
+ (mmc_get_bits(raw_csd, 128, 37, 5) + 1);
+ csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 5);
+ csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
+ csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
+ csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
+ csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
+}
+
+static void
+mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr)
+{
+ unsigned int scr_struct;
+
+ memset(scr, 0, sizeof(*scr));
+
+ scr_struct = mmc_get_bits(raw_scr, 64, 60, 4);
+ if (scr_struct != 0) {
+ printf("Unrecognised SCR structure version %d\n",
+ scr_struct);
+ return;
+ }
+ scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4);
+ scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4);
+}
+
+static void
+mmc_app_decode_sd_status(uint32_t *raw_sd_status,
+ struct mmc_sd_status *sd_status)
+{
+
+ memset(sd_status, 0, sizeof(*sd_status));
+
+ sd_status->bus_width = mmc_get_bits(raw_sd_status, 512, 510, 2);
+ sd_status->secured_mode = mmc_get_bits(raw_sd_status, 512, 509, 1);
+ sd_status->card_type = mmc_get_bits(raw_sd_status, 512, 480, 16);
+ sd_status->prot_area = mmc_get_bits(raw_sd_status, 512, 448, 12);
+ sd_status->speed_class = mmc_get_bits(raw_sd_status, 512, 440, 8);
+ sd_status->perf_move = mmc_get_bits(raw_sd_status, 512, 432, 8);
+ sd_status->au_size = mmc_get_bits(raw_sd_status, 512, 428, 4);
+ sd_status->erase_size = mmc_get_bits(raw_sd_status, 512, 408, 16);
+ sd_status->erase_timeout = mmc_get_bits(raw_sd_status, 512, 402, 6);
+ sd_status->erase_offset = mmc_get_bits(raw_sd_status, 512, 400, 2);
+}
+
+static int
+mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid)
+{
+ struct mmc_command cmd;
+ int err;
+
+ cmd.opcode = MMC_ALL_SEND_CID;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
+ cmd.data = NULL;
+ err = mmc_wait_for_cmd(sc, &cmd, 0);
+ memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t));
+ return (err);
+}
+
+static int
+mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd)
+{
+ struct mmc_command cmd;
+ int err;
+
+ cmd.opcode = MMC_SEND_CSD;
+ cmd.arg = rca << 16;
+ cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
+ cmd.data = NULL;
+ err = mmc_wait_for_cmd(sc, &cmd, 0);
+ memcpy(rawcsd, cmd.resp, 4 * sizeof(uint32_t));
+ return (err);
+}
+
+static int
+mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr)
+{
+ int err;
+ struct mmc_command cmd;
+ struct mmc_data data;
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ memset(&data, 0, sizeof(struct mmc_data));
+
+ memset(rawscr, 0, 8);
+ cmd.opcode = ACMD_SEND_SCR;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.arg = 0;
+ cmd.data = &data;
+
+ data.data = rawscr;
+ data.len = 8;
+ data.flags = MMC_DATA_READ;
+
+ err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
+ rawscr[0] = be32toh(rawscr[0]);
+ rawscr[1] = be32toh(rawscr[1]);
+ return (err);
+}
+
+static int
+mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd)
+{
+ int err;
+ struct mmc_command cmd;
+ struct mmc_data data;
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ memset(&data, 0, sizeof(struct mmc_data));
+
+ memset(rawextcsd, 0, 512);
+ cmd.opcode = MMC_SEND_EXT_CSD;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.arg = 0;
+ cmd.data = &data;
+
+ data.data = rawextcsd;
+ data.len = 512;
+ data.flags = MMC_DATA_READ;
+
+ err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
+ return (err);
+}
+
+static int
+mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, uint32_t *rawsdstatus)
+{
+ int err, i;
+ struct mmc_command cmd;
+ struct mmc_data data;
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ memset(&data, 0, sizeof(struct mmc_data));
+
+ memset(rawsdstatus, 0, 64);
+ cmd.opcode = ACMD_SD_STATUS;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.arg = 0;
+ cmd.data = &data;
+
+ data.data = rawsdstatus;
+ data.len = 64;
+ data.flags = MMC_DATA_READ;
+
+ err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
+ for (i = 0; i < 16; i++)
+ rawsdstatus[i] = be32toh(rawsdstatus[i]);
+ return (err);
+}
+
+static int
+mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp)
+{
+ struct mmc_command cmd;
+ int err;
+
+ cmd.opcode = MMC_SET_RELATIVE_ADDR;
+ cmd.arg = resp << 16;
+ cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
+ cmd.data = NULL;
+ err = mmc_wait_for_cmd(sc, &cmd, 0);
+ return (err);
+}
+
+static int
+mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp)
+{
+ struct mmc_command cmd;
+ int err;
+
+ cmd.opcode = SD_SEND_RELATIVE_ADDR;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
+ cmd.data = NULL;
+ err = mmc_wait_for_cmd(sc, &cmd, 0);
+ *resp = cmd.resp[0];
+ return (err);
+}
+
+static int
+mmc_send_status(struct mmc_softc *sc, uint16_t rca, uint32_t *status)
+{
+ struct mmc_command cmd;
+ int err;
+
+ cmd.opcode = MMC_SEND_STATUS;
+ cmd.arg = rca << 16;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+ cmd.data = NULL;
+ err = mmc_wait_for_cmd(sc, &cmd, 0);
+ *status = cmd.resp[0];
+ return (err);
+}
+
+static int
+mmc_set_blocklen(struct mmc_softc *sc, uint32_t len)
+{
+ struct mmc_command cmd;
+ int err;
+
+ cmd.opcode = MMC_SET_BLOCKLEN;
+ cmd.arg = len;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+ cmd.data = NULL;
+ err = mmc_wait_for_cmd(sc, &cmd, 0);
+ return (err);
+}
+
+static void
+mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard)
+{
+ device_printf(dev, "Card at relative address %d%s:\n",
+ ivar->rca, newcard ? " added" : "");
+ device_printf(dev, " card: %s\n", ivar->card_id_string);
+ device_printf(dev, " bus: %ubit, %uMHz%s\n",
+ (ivar->bus_width == bus_width_1 ? 1 :
+ (ivar->bus_width == bus_width_4 ? 4 : 8)),
+ (ivar->timing == bus_timing_hs ?
+ ivar->hs_tran_speed : ivar->tran_speed) / 1000000,
+ ivar->timing == bus_timing_hs ? ", high speed timing" : "");
+ device_printf(dev, " memory: %u blocks, erase sector %u blocks%s\n",
+ ivar->sec_count, ivar->erase_sector,
+ ivar->read_only ? ", read-only" : "");
+}
+
+static void
+mmc_discover_cards(struct mmc_softc *sc)
+{
+ struct mmc_ivars *ivar = NULL;
+ device_t *devlist;
+ int err, i, devcount, newcard;
+ uint32_t raw_cid[4], resp, sec_count, status;
+ device_t child;
+ uint16_t rca = 2;
+ u_char switch_res[64];
+
+ if (bootverbose || mmc_debug)
+ device_printf(sc->dev, "Probing cards\n");
+ while (1) {
+ err = mmc_all_send_cid(sc, raw_cid);
+ if (err == MMC_ERR_TIMEOUT)
+ break;
+ if (err != MMC_ERR_NONE) {
+ device_printf(sc->dev, "Error reading CID %d\n", err);
+ break;
+ }
+ newcard = 1;
+ if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
+ return;
+ for (i = 0; i < devcount; i++) {
+ ivar = device_get_ivars(devlist[i]);
+ if (memcmp(ivar->raw_cid, raw_cid, sizeof(raw_cid)) == 0) {
+ newcard = 0;
+ break;
+ }
+ }
+ free(devlist, M_TEMP);
+ if (bootverbose || mmc_debug) {
+ device_printf(sc->dev, "%sard detected (CID %08x%08x%08x%08x)\n",
+ newcard ? "New c" : "C",
+ raw_cid[0], raw_cid[1], raw_cid[2], raw_cid[3]);
+ }
+ if (newcard) {
+ ivar = malloc(sizeof(struct mmc_ivars), M_DEVBUF,
+ M_WAITOK | M_ZERO);
+ if (!ivar)
+ return;
+ memcpy(ivar->raw_cid, raw_cid, sizeof(raw_cid));
+ }
+ if (mmcbr_get_ro(sc->dev))
+ ivar->read_only = 1;
+ ivar->bus_width = bus_width_1;
+ ivar->timing = bus_timing_normal;
+ ivar->mode = mmcbr_get_mode(sc->dev);
+ if (ivar->mode == mode_sd) {
+ mmc_decode_cid_sd(ivar->raw_cid, &ivar->cid);
+ mmc_send_relative_addr(sc, &resp);
+ ivar->rca = resp >> 16;
+ /* Get card CSD. */
+ mmc_send_csd(sc, ivar->rca, ivar->raw_csd);
+ if (bootverbose || mmc_debug)
+ device_printf(sc->dev,
+ "%sard detected (CSD %08x%08x%08x%08x)\n",
+ newcard ? "New c" : "C", ivar->raw_csd[0],
+ ivar->raw_csd[1], ivar->raw_csd[2],
+ ivar->raw_csd[3]);
+ mmc_decode_csd_sd(ivar->raw_csd, &ivar->csd);
+ ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE;
+ if (ivar->csd.csd_structure > 0)
+ ivar->high_cap = 1;
+ ivar->tran_speed = ivar->csd.tran_speed;
+ ivar->erase_sector = ivar->csd.erase_sector *
+ ivar->csd.write_bl_len / MMC_SECTOR_SIZE;
+
+ err = mmc_send_status(sc, ivar->rca, &status);
+ if (err != MMC_ERR_NONE) {
+ device_printf(sc->dev,
+ "Error reading card status %d\n", err);
+ break;
+ }
+ if ((status & R1_CARD_IS_LOCKED) != 0) {
+ device_printf(sc->dev,
+ "Card is password protected, skipping.\n");
+ break;
+ }
+
+ /* Get card SCR. Card must be selected to fetch it. */
+ mmc_select_card(sc, ivar->rca);
+ mmc_app_send_scr(sc, ivar->rca, ivar->raw_scr);
+ mmc_app_decode_scr(ivar->raw_scr, &ivar->scr);
+ /* Get card switch capabilities (command class 10). */
+ if ((ivar->scr.sda_vsn >= 1) &&
+ (ivar->csd.ccc & (1<<10))) {
+ mmc_sd_switch(sc, SD_SWITCH_MODE_CHECK,
+ SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE,
+ switch_res);
+ if (switch_res[13] & 2) {
+ ivar->timing = bus_timing_hs;
+ ivar->hs_tran_speed = SD_MAX_HS;
+ }
+ }
+ mmc_app_sd_status(sc, ivar->rca, ivar->raw_sd_status);
+ mmc_app_decode_sd_status(ivar->raw_sd_status,
+ &ivar->sd_status);
+ if (ivar->sd_status.au_size != 0) {
+ ivar->erase_sector =
+ 16 << ivar->sd_status.au_size;
+ }
+ mmc_select_card(sc, 0);
+ /* Find max supported bus width. */
+ if ((mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) &&
+ (ivar->scr.bus_widths & SD_SCR_BUS_WIDTH_4))
+ ivar->bus_width = bus_width_4;
+
+ /*
+ * Some cards that report maximum I/O block sizes
+ * greater than 512 require the block length to be
+ * set to 512, even though that is supposed to be
+ * the default. Example:
+ *
+ * Transcend 2GB SDSC card, CID:
+ * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000
+ */
+ if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE ||
+ ivar->csd.write_bl_len != MMC_SECTOR_SIZE)
+ mmc_set_blocklen(sc, MMC_SECTOR_SIZE);
+
+ mmc_format_card_id_string(ivar);
+
+ if (bootverbose || mmc_debug)
+ mmc_log_card(sc->dev, ivar, newcard);
+ if (newcard) {
+ /* Add device. */
+ child = device_add_child(sc->dev, NULL, -1);
+ device_set_ivars(child, ivar);
+ }
+ return;
+ }
+ mmc_decode_cid_mmc(ivar->raw_cid, &ivar->cid);
+ ivar->rca = rca++;
+ mmc_set_relative_addr(sc, ivar->rca);
+ /* Get card CSD. */
+ mmc_send_csd(sc, ivar->rca, ivar->raw_csd);
+ if (bootverbose || mmc_debug)
+ device_printf(sc->dev,
+ "%sard detected (CSD %08x%08x%08x%08x)\n",
+ newcard ? "New c" : "C", ivar->raw_csd[0],
+ ivar->raw_csd[1], ivar->raw_csd[2],
+ ivar->raw_csd[3]);
+
+ mmc_decode_csd_mmc(ivar->raw_csd, &ivar->csd);
+ ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE;
+ ivar->tran_speed = ivar->csd.tran_speed;
+ ivar->erase_sector = ivar->csd.erase_sector *
+ ivar->csd.write_bl_len / MMC_SECTOR_SIZE;
+
+ err = mmc_send_status(sc, ivar->rca, &status);
+ if (err != MMC_ERR_NONE) {
+ device_printf(sc->dev,
+ "Error reading card status %d\n", err);
+ break;
+ }
+ if ((status & R1_CARD_IS_LOCKED) != 0) {
+ device_printf(sc->dev,
+ "Card is password protected, skipping.\n");
+ break;
+ }
+
+ /* Only MMC >= 4.x cards support EXT_CSD. */
+ if (ivar->csd.spec_vers >= 4) {
+ /* Card must be selected to fetch EXT_CSD. */
+ mmc_select_card(sc, ivar->rca);
+ mmc_send_ext_csd(sc, ivar->raw_ext_csd);
+ /* Handle extended capacity from EXT_CSD */
+ sec_count = ivar->raw_ext_csd[EXT_CSD_SEC_CNT] +
+ (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) +
+ (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) +
+ (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
+ if (sec_count != 0) {
+ ivar->sec_count = sec_count;
+ ivar->high_cap = 1;
+ }
+ /* Get card speed in high speed mode. */
+ ivar->timing = bus_timing_hs;
+ if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE]
+ & EXT_CSD_CARD_TYPE_52)
+ ivar->hs_tran_speed = MMC_TYPE_52_MAX_HS;
+ else if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE]
+ & EXT_CSD_CARD_TYPE_26)
+ ivar->hs_tran_speed = MMC_TYPE_26_MAX_HS;
+ else
+ ivar->hs_tran_speed = ivar->tran_speed;
+ /* Find max supported bus width. */
+ ivar->bus_width = mmc_test_bus_width(sc);
+ mmc_select_card(sc, 0);
+ /* Handle HC erase sector size. */
+ if (ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE] != 0) {
+ ivar->erase_sector = 1024 *
+ ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE];
+ mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_ERASE_GRP_DEF, 1);
+ }
+ } else {
+ ivar->bus_width = bus_width_1;
+ ivar->timing = bus_timing_normal;
+ }
+
+ /*
+ * Some cards that report maximum I/O block sizes greater
+ * than 512 require the block length to be set to 512, even
+ * though that is supposed to be the default. Example:
+ *
+ * Transcend 2GB SDSC card, CID:
+ * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000
+ */
+ if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE ||
+ ivar->csd.write_bl_len != MMC_SECTOR_SIZE)
+ mmc_set_blocklen(sc, MMC_SECTOR_SIZE);
+
+ mmc_format_card_id_string(ivar);
+
+ if (bootverbose || mmc_debug)
+ mmc_log_card(sc->dev, ivar, newcard);
+ if (newcard) {
+ /* Add device. */
+ child = device_add_child(sc->dev, NULL, -1);
+ device_set_ivars(child, ivar);
+ }
+ }
+}
+
+static void
+mmc_rescan_cards(struct mmc_softc *sc)
+{
+ struct mmc_ivars *ivar = NULL;
+ device_t *devlist;
+ int err, i, devcount;
+
+ if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
+ return;
+ for (i = 0; i < devcount; i++) {
+ ivar = device_get_ivars(devlist[i]);
+ if (mmc_select_card(sc, ivar->rca)) {
+ if (bootverbose || mmc_debug)
+ device_printf(sc->dev, "Card at relative address %d lost.\n",
+ ivar->rca);
+ device_delete_child(sc->dev, devlist[i]);
+ free(ivar, M_DEVBUF);
+ }
+ }
+ free(devlist, M_TEMP);
+ mmc_select_card(sc, 0);
+}
+
+static int
+mmc_delete_cards(struct mmc_softc *sc)
+{
+ struct mmc_ivars *ivar;
+ device_t *devlist;
+ int err, i, devcount;
+
+ if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
+ return (err);
+ for (i = 0; i < devcount; i++) {
+ ivar = device_get_ivars(devlist[i]);
+ if (bootverbose || mmc_debug)
+ device_printf(sc->dev, "Card at relative address %d deleted.\n",
+ ivar->rca);
+ device_delete_child(sc->dev, devlist[i]);
+ free(ivar, M_DEVBUF);
+ }
+ free(devlist, M_TEMP);
+ return (0);
+}
+
+static void
+mmc_go_discovery(struct mmc_softc *sc)
+{
+ uint32_t ocr;
+ device_t dev;
+ int err;
+
+ dev = sc->dev;
+ if (mmcbr_get_power_mode(dev) != power_on) {
+ /*
+ * First, try SD modes
+ */
+ mmcbr_set_mode(dev, mode_sd);
+ mmc_power_up(sc);
+ mmcbr_set_bus_mode(dev, pushpull);
+ if (bootverbose || mmc_debug)
+ device_printf(sc->dev, "Probing bus\n");
+ mmc_idle_cards(sc);
+ err = mmc_send_if_cond(sc, 1);
+ if ((bootverbose || mmc_debug) && err == 0)
+ device_printf(sc->dev, "SD 2.0 interface conditions: OK\n");
+ if (mmc_send_app_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) {
+ if (bootverbose || mmc_debug)
+ device_printf(sc->dev, "SD probe: failed\n");
+ /*
+ * Failed, try MMC
+ */
+ mmcbr_set_mode(dev, mode_mmc);
+ if (mmc_send_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) {
+ if (bootverbose || mmc_debug)
+ device_printf(sc->dev, "MMC probe: failed\n");
+ ocr = 0; /* Failed both, powerdown. */
+ } else if (bootverbose || mmc_debug)
+ device_printf(sc->dev,
+ "MMC probe: OK (OCR: 0x%08x)\n", ocr);
+ } else if (bootverbose || mmc_debug)
+ device_printf(sc->dev, "SD probe: OK (OCR: 0x%08x)\n", ocr);
+
+ mmcbr_set_ocr(dev, mmc_select_vdd(sc, ocr));
+ if (mmcbr_get_ocr(dev) != 0)
+ mmc_idle_cards(sc);
+ } else {
+ mmcbr_set_bus_mode(dev, opendrain);
+ mmcbr_set_clock(dev, mmcbr_get_f_min(dev));
+ mmcbr_update_ios(dev);
+ /* XXX recompute vdd based on new cards? */
+ }
+ /*
+ * Make sure that we have a mutually agreeable voltage to at least
+ * one card on the bus.
+ */
+ if (bootverbose || mmc_debug)
+ device_printf(sc->dev, "Current OCR: 0x%08x\n", mmcbr_get_ocr(dev));
+ if (mmcbr_get_ocr(dev) == 0) {
+ mmc_delete_cards(sc);
+ mmc_power_down(sc);
+ return;
+ }
+ /*
+ * Reselect the cards after we've idled them above.
+ */
+ if (mmcbr_get_mode(dev) == mode_sd) {
+ err = mmc_send_if_cond(sc, 1);
+ mmc_send_app_op_cond(sc,
+ (err ? 0 : MMC_OCR_CCS) | mmcbr_get_ocr(dev), NULL);
+ } else
+ mmc_send_op_cond(sc, mmcbr_get_ocr(dev), NULL);
+ mmc_discover_cards(sc);
+ mmc_rescan_cards(sc);
+
+ mmcbr_set_bus_mode(dev, pushpull);
+ mmcbr_update_ios(dev);
+ mmc_calculate_clock(sc);
+ bus_generic_attach(dev);
+/* mmc_update_children_sysctl(dev);*/
+}
+
+static int
+mmc_calculate_clock(struct mmc_softc *sc)
+{
+ int max_dtr, max_hs_dtr, max_timing;
+ int nkid, i, f_min, f_max;
+ device_t *kids;
+ struct mmc_ivars *ivar;
+
+ f_min = mmcbr_get_f_min(sc->dev);
+ f_max = mmcbr_get_f_max(sc->dev);
+ max_dtr = max_hs_dtr = f_max;
+ if ((mmcbr_get_caps(sc->dev) & MMC_CAP_HSPEED))
+ max_timing = bus_timing_hs;
+ else
+ max_timing = bus_timing_normal;
+ if (device_get_children(sc->dev, &kids, &nkid) != 0)
+ panic("can't get children");
+ for (i = 0; i < nkid; i++) {
+ ivar = device_get_ivars(kids[i]);
+ if (ivar->timing < max_timing)
+ max_timing = ivar->timing;
+ if (ivar->tran_speed < max_dtr)
+ max_dtr = ivar->tran_speed;
+ if (ivar->hs_tran_speed < max_hs_dtr)
+ max_hs_dtr = ivar->hs_tran_speed;
+ }
+ for (i = 0; i < nkid; i++) {
+ ivar = device_get_ivars(kids[i]);
+ if (ivar->timing == bus_timing_normal)
+ continue;
+ mmc_select_card(sc, ivar->rca);
+ mmc_set_timing(sc, max_timing);
+ }
+ mmc_select_card(sc, 0);
+ free(kids, M_TEMP);
+ if (max_timing == bus_timing_hs)
+ max_dtr = max_hs_dtr;
+ if (bootverbose || mmc_debug) {
+ device_printf(sc->dev,
+ "setting transfer rate to %d.%03dMHz%s\n",
+ max_dtr / 1000000, (max_dtr / 1000) % 1000,
+ max_timing == bus_timing_hs ? " (high speed timing)" : "");
+ }
+ mmcbr_set_timing(sc->dev, max_timing);
+ mmcbr_set_clock(sc->dev, max_dtr);
+ mmcbr_update_ios(sc->dev);
+ return max_dtr;
+}
+
+static void
+mmc_scan(struct mmc_softc *sc)
+{
+ device_t dev = sc->dev;
+
+ mmc_acquire_bus(dev, dev);
+ mmc_go_discovery(sc);
+ mmc_release_bus(dev, dev);
+}
+
+static int
+mmc_read_ivar(device_t bus, device_t child, int which, uintptr_t *result)
+{
+ struct mmc_ivars *ivar = device_get_ivars(child);
+
+ switch (which) {
+ default:
+ return (EINVAL);
+ case MMC_IVAR_DSR_IMP:
+ *result = ivar->csd.dsr_imp;
+ break;
+ case MMC_IVAR_MEDIA_SIZE:
+ *result = ivar->sec_count;
+ break;
+ case MMC_IVAR_RCA:
+ *result = ivar->rca;
+ break;
+ case MMC_IVAR_SECTOR_SIZE:
+ *result = MMC_SECTOR_SIZE;
+ break;
+ case MMC_IVAR_TRAN_SPEED:
+ *result = mmcbr_get_clock(bus);
+ break;
+ case MMC_IVAR_READ_ONLY:
+ *result = ivar->read_only;
+ break;
+ case MMC_IVAR_HIGH_CAP:
+ *result = ivar->high_cap;
+ break;
+ case MMC_IVAR_CARD_TYPE:
+ *result = ivar->mode;
+ break;
+ case MMC_IVAR_BUS_WIDTH:
+ *result = ivar->bus_width;
+ break;
+ case MMC_IVAR_ERASE_SECTOR:
+ *result = ivar->erase_sector;
+ break;
+ case MMC_IVAR_MAX_DATA:
+ *result = mmcbr_get_max_data(bus);
+ break;
+ case MMC_IVAR_CARD_ID_STRING:
+ *(char **)result = ivar->card_id_string;
+ break;
+ }
+ return (0);
+}
+
+static int
+mmc_write_ivar(device_t bus, device_t child, int which, uintptr_t value)
+{
+ /*
+ * None are writable ATM
+ */
+ return (EINVAL);
+}
+
+static void
+mmc_delayed_attach(void *xsc)
+{
+ struct mmc_softc *sc = xsc;
+
+ mmc_scan(sc);
+ config_intrhook_disestablish(&sc->config_intrhook);
+}
+
+static int
+mmc_child_location_str(device_t dev, device_t child, char *buf,
+ size_t buflen)
+{
+
+ snprintf(buf, buflen, "rca=0x%04x", mmc_get_rca(child));
+ return (0);
+}
+
+static device_method_t mmc_methods[] = {
+ /* device_if */
+ DEVMETHOD(device_probe, mmc_probe),
+ DEVMETHOD(device_attach, mmc_attach),
+ DEVMETHOD(device_detach, mmc_detach),
+ DEVMETHOD(device_suspend, mmc_suspend),
+ DEVMETHOD(device_resume, mmc_resume),
+
+ /* Bus interface */
+ DEVMETHOD(bus_read_ivar, mmc_read_ivar),
+ DEVMETHOD(bus_write_ivar, mmc_write_ivar),
+ DEVMETHOD(bus_child_location_str, mmc_child_location_str),
+
+ /* MMC Bus interface */
+ DEVMETHOD(mmcbus_wait_for_request, mmc_wait_for_request),
+ DEVMETHOD(mmcbus_acquire_bus, mmc_acquire_bus),
+ DEVMETHOD(mmcbus_release_bus, mmc_release_bus),
+
+ DEVMETHOD_END
+};
+
+static driver_t mmc_driver = {
+ "mmc",
+ mmc_methods,
+ sizeof(struct mmc_softc),
+};
+static devclass_t mmc_devclass;
+
+DRIVER_MODULE(mmc, at91_mci, mmc_driver, mmc_devclass, NULL, NULL);
+DRIVER_MODULE(mmc, dw_mmc, mmc_driver, mmc_devclass, NULL, NULL);
+DRIVER_MODULE(mmc, sdhci, mmc_driver, mmc_devclass, NULL, NULL);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-07 23:21:56 +0000