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freebsd-skq/sys/cam/mmc/mmc_xpt.c
Ilya Bakulin 9ea7265066 Minor cleanups in mmc_xpt.c 
* Downgrade some CAM debug messages from _INFO to _DEBUG level;
 * Add KASSERT for the case when we suspect incorrect CAM SIM initialization (using cam_sim_alloc() instead of cam_sim_alloc_dev());
 * Use waiting version of xpt_alloc_ccb(), we are not in hurry;
 * With the waiting version we cannot get NULL return, so remove the NULL check;
 * In some csses, the name of mmcprobe_done has been written as mmc_probedone();
 * Send AC_LOST_DEVICE if we, well, lost the device;
 * Misc style(9) fixes.

Reviewed by:	manu
Approved by:	imp (mentor)
Differential Revision:	https://reviews.freebsd.org/D25843
2020-08-04 21:58:43 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2013,2014 Ilya Bakulin <ilya@bakulin.de>
* 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,
* without modification, immediately at the beginning of the file.
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/time.h>
#include <sys/conf.h>
#include <sys/fcntl.h>
#include <sys/interrupt.h>
#include <sys/sbuf.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/sysctl.h>
#include <sys/condvar.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_queue.h>
#include <cam/cam_periph.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt.h>
#include <cam/cam_xpt_sim.h>
#include <cam/cam_xpt_periph.h>
#include <cam/cam_xpt_internal.h>
#include <cam/cam_debug.h>
#include <cam/mmc/mmc.h>
#include <cam/mmc/mmc_bus.h>
#include <machine/stdarg.h> /* for xpt_print below */
#include <machine/_inttypes.h> /* for PRIu64 */
#include "opt_cam.h"
FEATURE(mmccam, "CAM-based MMC/SD/SDIO stack");
static struct cam_ed * mmc_alloc_device(struct cam_eb *bus,
struct cam_et *target, lun_id_t lun_id);
static void mmc_dev_async(u_int32_t async_code, struct cam_eb *bus,
struct cam_et *target, struct cam_ed *device, void *async_arg);
static void mmc_action(union ccb *start_ccb);
static void mmc_dev_advinfo(union ccb *start_ccb);
static void mmc_announce_periph(struct cam_periph *periph);
static void mmc_scan_lun(struct cam_periph *periph,
struct cam_path *path, cam_flags flags, union ccb *ccb);
/* mmcprobe methods */
static cam_status mmcprobe_register(struct cam_periph *periph, void *arg);
static void mmcprobe_start(struct cam_periph *periph, union ccb *start_ccb);
static void mmcprobe_cleanup(struct cam_periph *periph);
static void mmcprobe_done(struct cam_periph *periph, union ccb *done_ccb);
static void mmc_proto_announce(struct cam_ed *device);
static void mmc_proto_denounce(struct cam_ed *device);
static void mmc_proto_debug_out(union ccb *ccb);
typedef enum {
PROBE_RESET,
PROBE_IDENTIFY,
PROBE_SDIO_RESET,
PROBE_SEND_IF_COND,
PROBE_SDIO_INIT,
PROBE_MMC_INIT,
PROBE_SEND_APP_OP_COND,
PROBE_GET_CID,
PROBE_GET_CSD,
PROBE_SEND_RELATIVE_ADDR,
PROBE_MMC_SET_RELATIVE_ADDR,
PROBE_SELECT_CARD,
PROBE_DONE,
PROBE_INVALID
} probe_action;
static char *probe_action_text[] = {
"PROBE_RESET",
"PROBE_IDENTIFY",
"PROBE_SDIO_RESET",
"PROBE_SEND_IF_COND",
"PROBE_SDIO_INIT",
"PROBE_MMC_INIT",
"PROBE_SEND_APP_OP_COND",
"PROBE_GET_CID",
"PROBE_GET_CSD",
"PROBE_SEND_RELATIVE_ADDR",
"PROBE_MMC_SET_RELATIVE_ADDR",
"PROBE_SELECT_CARD",
"PROBE_DONE",
"PROBE_INVALID"
};
#define PROBE_SET_ACTION(softc, newaction) \
do { \
char **text; \
text = probe_action_text; \
CAM_DEBUG((softc)->periph->path, CAM_DEBUG_PROBE, \
("Probe %s to %s\n", text[(softc)->action], \
text[(newaction)])); \
(softc)->action = (newaction); \
} while(0)
static struct xpt_xport_ops mmc_xport_ops = {
.alloc_device = mmc_alloc_device,
.action = mmc_action,
.async = mmc_dev_async,
.announce = mmc_announce_periph,
};
#define MMC_XPT_XPORT(x, X) \
static struct xpt_xport mmc_xport_ ## x = { \
.xport = XPORT_ ## X, \
.name = #x, \
.ops = &mmc_xport_ops, \
}; \
CAM_XPT_XPORT(mmc_xport_ ## x);
MMC_XPT_XPORT(mmc, MMCSD);
static struct xpt_proto_ops mmc_proto_ops = {
.announce = mmc_proto_announce,
.denounce = mmc_proto_denounce,
.debug_out = mmc_proto_debug_out,
};
static struct xpt_proto mmc_proto = {
.proto = PROTO_MMCSD,
.name = "mmcsd",
.ops = &mmc_proto_ops,
};
CAM_XPT_PROTO(mmc_proto);
typedef struct {
probe_action action;
int restart;
union ccb saved_ccb;
uint32_t flags;
#define PROBE_FLAG_ACMD_SENT 0x1 /* CMD55 is sent, card expects ACMD */
#define PROBE_FLAG_HOST_CAN_DO_18V 0x2 /* Host can do 1.8V signaling */
uint8_t acmd41_count; /* how many times ACMD41 has been issued */
struct cam_periph *periph;
} mmcprobe_softc;
/* XPort functions -- an interface to CAM at periph side */
static struct cam_ed *
mmc_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id)
{
struct cam_ed *device;
device = xpt_alloc_device(bus, target, lun_id);
if (device == NULL)
return (NULL);
device->quirk = NULL;
device->mintags = 0;
device->maxtags = 0;
bzero(&device->inq_data, sizeof(device->inq_data));
device->inq_flags = 0;
device->queue_flags = 0;
device->serial_num = NULL;
device->serial_num_len = 0;
return (device);
}
static void
mmc_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target,
struct cam_ed *device, void *async_arg)
{
/*
* We only need to handle events for real devices.
*/
if (target->target_id == CAM_TARGET_WILDCARD
|| device->lun_id == CAM_LUN_WILDCARD)
return;
if (async_code == AC_LOST_DEVICE &&
(device->flags & CAM_DEV_UNCONFIGURED) == 0) {
device->flags |= CAM_DEV_UNCONFIGURED;
xpt_release_device(device);
}
}
/* Taken from nvme_scan_lun, thanks to bsdimp@ */
static void
mmc_scan_lun(struct cam_periph *periph, struct cam_path *path,
cam_flags flags, union ccb *request_ccb)
{
struct ccb_pathinq cpi;
cam_status status;
struct cam_periph *old_periph;
int lock;
CAM_DEBUG(path, CAM_DEBUG_TRACE, ("mmc_scan_lun\n"));
xpt_path_inq(&cpi, path);
if (cpi.ccb_h.status != CAM_REQ_CMP) {
if (request_ccb != NULL) {
request_ccb->ccb_h.status = cpi.ccb_h.status;
xpt_done(request_ccb);
}
return;
}
if (xpt_path_lun_id(path) == CAM_LUN_WILDCARD) {
CAM_DEBUG(path, CAM_DEBUG_TRACE, ("mmd_scan_lun ignoring bus\n"));
request_ccb->ccb_h.status = CAM_REQ_CMP; /* XXX signal error ? */
xpt_done(request_ccb);
return;
}
lock = (xpt_path_owned(path) == 0);
if (lock)
xpt_path_lock(path);
if ((old_periph = cam_periph_find(path, "mmcprobe")) != NULL) {
if ((old_periph->flags & CAM_PERIPH_INVALID) == 0) {
// mmcprobe_softc *softc;
// softc = (mmcprobe_softc *)old_periph->softc;
// Not sure if we need request ccb queue for mmc
// TAILQ_INSERT_TAIL(&softc->request_ccbs,
// &request_ccb->ccb_h, periph_links.tqe);
// softc->restart = 1;
CAM_DEBUG(path, CAM_DEBUG_INFO,
("Got scan request, but mmcprobe already exists\n"));
request_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
xpt_done(request_ccb);
} else {
request_ccb->ccb_h.status = CAM_REQ_CMP_ERR;
xpt_done(request_ccb);
}
} else {
if (bootverbose)
xpt_print(path, " Set up the mmcprobe device...\n");
status = cam_periph_alloc(mmcprobe_register, NULL,
mmcprobe_cleanup,
mmcprobe_start,
"mmcprobe",
CAM_PERIPH_BIO,
path, NULL, 0,
request_ccb);
if (status != CAM_REQ_CMP) {
xpt_print(path, "xpt_scan_lun: cam_alloc_periph "
"returned an error, can't continue probe\n");
}
request_ccb->ccb_h.status = status;
xpt_done(request_ccb);
}
if (lock)
xpt_path_unlock(path);
}
static void
mmc_action(union ccb *start_ccb)
{
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE,
("mmc_action! func_code=%x, action %s\n", start_ccb->ccb_h.func_code,
xpt_action_name(start_ccb->ccb_h.func_code)));
switch (start_ccb->ccb_h.func_code) {
case XPT_SCAN_BUS:
/* FALLTHROUGH */
case XPT_SCAN_TGT:
/* FALLTHROUGH */
case XPT_SCAN_LUN:
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
("XPT_SCAN_{BUS,TGT,LUN}\n"));
mmc_scan_lun(start_ccb->ccb_h.path->periph,
start_ccb->ccb_h.path, start_ccb->crcn.flags,
start_ccb);
break;
case XPT_DEV_ADVINFO:
{
mmc_dev_advinfo(start_ccb);
break;
}
default:
xpt_action_default(start_ccb);
break;
}
}
static void
mmc_dev_advinfo(union ccb *start_ccb)
{
struct cam_ed *device;
struct ccb_dev_advinfo *cdai;
off_t amt;
xpt_path_assert(start_ccb->ccb_h.path, MA_OWNED);
start_ccb->ccb_h.status = CAM_REQ_INVALID;
device = start_ccb->ccb_h.path->device;
cdai = &start_ccb->cdai;
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE,
("%s: request %x\n", __func__, cdai->buftype));
/* We don't support writing any data */
if (cdai->flags & CDAI_FLAG_STORE)
panic("Attempt to store data?!");
switch(cdai->buftype) {
case CDAI_TYPE_SCSI_DEVID:
cdai->provsiz = device->device_id_len;
if (device->device_id_len == 0)
break;
amt = MIN(cdai->provsiz, cdai->bufsiz);
memcpy(cdai->buf, device->device_id, amt);
break;
case CDAI_TYPE_SERIAL_NUM:
cdai->provsiz = device->serial_num_len;
if (device->serial_num_len == 0)
break;
amt = MIN(cdai->provsiz, cdai->bufsiz);
memcpy(cdai->buf, device->serial_num, amt);
break;
case CDAI_TYPE_PHYS_PATH: /* pass(4) wants this */
cdai->provsiz = 0;
break;
case CDAI_TYPE_MMC_PARAMS:
cdai->provsiz = sizeof(struct mmc_params);
amt = MIN(cdai->provsiz, cdai->bufsiz);
memcpy(cdai->buf, &device->mmc_ident_data, amt);
break;
default:
panic("Unknown buftype");
return;
}
start_ccb->ccb_h.status = CAM_REQ_CMP;
}
static void
mmc_announce_periph(struct cam_periph *periph)
{
struct ccb_pathinq cpi;
struct ccb_trans_settings cts;
struct cam_path *path = periph->path;
cam_periph_assert(periph, MA_OWNED);
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("mmc_announce_periph"));
xpt_setup_ccb(&cts.ccb_h, path, CAM_PRIORITY_NORMAL);
cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
cts.type = CTS_TYPE_CURRENT_SETTINGS;
xpt_action((union ccb*)&cts);
if ((cts.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
return;
xpt_path_inq(&cpi, periph->path);
printf("XPT info: CLK %04X, ...\n", cts.proto_specific.mmc.ios.clock);
}
void
mmccam_start_discovery(struct cam_sim *sim)
{
union ccb *ccb;
uint32_t pathid;
KASSERT(sim->sim_dev != NULL, ("mmccam_start_discovery(%s): sim_dev is not initialized,"
" has cam_sim_alloc_dev() been used?", cam_sim_name(sim)));
pathid = cam_sim_path(sim);
ccb = xpt_alloc_ccb();
/*
* We create a rescan request for BUS:0:0, since the card
* will be at lun 0.
*/
if (xpt_create_path(&ccb->ccb_h.path, NULL, pathid,
/* target */ 0, /* lun */ 0) != CAM_REQ_CMP) {
xpt_free_ccb(ccb);
return;
}
xpt_rescan(ccb);
}
/* This func is called per attached device :-( */
static void
mmc_print_ident(struct mmc_params *ident_data, struct sbuf *sb)
{
bool space = false;
sbuf_printf(sb, "Relative addr: %08x\n", ident_data->card_rca);
sbuf_printf(sb, "Card features: <");
if (ident_data->card_features & CARD_FEATURE_MMC) {
sbuf_printf(sb, "MMC");
space = true;
}
if (ident_data->card_features & CARD_FEATURE_MEMORY) {
sbuf_printf(sb, "%sMemory", space ? " " : "");
space = true;
}
if (ident_data->card_features & CARD_FEATURE_SDHC) {
sbuf_printf(sb, "%sHigh-Capacity", space ? " " : "");
space = true;
}
if (ident_data->card_features & CARD_FEATURE_SD20) {
sbuf_printf(sb, "%sSD2.0-Conditions", space ? " " : "");
space = true;
}
if (ident_data->card_features & CARD_FEATURE_SDIO) {
sbuf_printf(sb, "%sSDIO", space ? " " : "");
space = true;
}
if (ident_data->card_features & CARD_FEATURE_18V) {
sbuf_printf(sb, "%s1.8-Signaling", space ? " " : "");
}
sbuf_printf(sb, ">\n");
if (ident_data->card_features & CARD_FEATURE_MEMORY)
sbuf_printf(sb, "Card memory OCR: %08x\n",
ident_data->card_ocr);
if (ident_data->card_features & CARD_FEATURE_SDIO) {
sbuf_printf(sb, "Card IO OCR: %08x\n", ident_data->io_ocr);
sbuf_printf(sb, "Number of functions: %u\n",
ident_data->sdio_func_count);
}
sbuf_finish(sb);
printf("%s", sbuf_data(sb));
sbuf_clear(sb);
}
static void
mmc_proto_announce(struct cam_ed *device)
{
struct sbuf sb;
char buffer[256];
sbuf_new(&sb, buffer, sizeof(buffer), SBUF_FIXEDLEN);
mmc_print_ident(&device->mmc_ident_data, &sb);
sbuf_finish(&sb);
sbuf_putbuf(&sb);
}
static void
mmc_proto_denounce(struct cam_ed *device)
{
mmc_proto_announce(device);
}
static void
mmc_proto_debug_out(union ccb *ccb)
{
if (ccb->ccb_h.func_code != XPT_MMC_IO)
return;
CAM_DEBUG(ccb->ccb_h.path,
CAM_DEBUG_CDB,("mmc_proto_debug_out\n"));
}
static periph_init_t probe_periph_init;
static struct periph_driver probe_driver =
{
probe_periph_init, "mmcprobe",
TAILQ_HEAD_INITIALIZER(probe_driver.units), /* generation */ 0,
CAM_PERIPH_DRV_EARLY
};
PERIPHDRIVER_DECLARE(mmcprobe, probe_driver);
#define CARD_ID_FREQUENCY 400000 /* Spec requires 400kHz max during ID phase. */
static void
probe_periph_init(void)
{
}
static cam_status
mmcprobe_register(struct cam_periph *periph, void *arg)
{
mmcprobe_softc *softc;
union ccb *request_ccb; /* CCB representing the probe request */
int status;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("mmcprobe_register\n"));
request_ccb = (union ccb *)arg;
if (request_ccb == NULL) {
printf("mmcprobe_register: no probe CCB, "
"can't register device\n");
return(CAM_REQ_CMP_ERR);
}
softc = (mmcprobe_softc *)malloc(sizeof(*softc), M_CAMXPT, M_NOWAIT);
if (softc == NULL) {
printf("proberegister: Unable to probe new device. "
"Unable to allocate softc\n");
return(CAM_REQ_CMP_ERR);
}
softc->flags = 0;
softc->acmd41_count = 0;
periph->softc = softc;
softc->periph = periph;
softc->action = PROBE_INVALID;
softc->restart = 0;
status = cam_periph_acquire(periph);
memset(&periph->path->device->mmc_ident_data, 0, sizeof(struct mmc_params));
if (status != 0) {
printf("proberegister: cam_periph_acquire failed (status=%d)\n",
status);
return (CAM_REQ_CMP_ERR);
}
CAM_DEBUG(periph->path, CAM_DEBUG_PROBE, ("Probe started\n"));
if (periph->path->device->flags & CAM_DEV_UNCONFIGURED)
PROBE_SET_ACTION(softc, PROBE_RESET);
else
PROBE_SET_ACTION(softc, PROBE_IDENTIFY);
/* This will kick the ball */
xpt_schedule(periph, CAM_PRIORITY_XPT);
return(CAM_REQ_CMP);
}
static int
mmc_highest_voltage(uint32_t ocr)
{
int i;
for (i = MMC_OCR_MAX_VOLTAGE_SHIFT;
i >= MMC_OCR_MIN_VOLTAGE_SHIFT; i--)
if (ocr & (1 << i))
return (i);
return (-1);
}
static inline void
init_standard_ccb(union ccb *ccb, uint32_t cmd)
{
ccb->ccb_h.func_code = cmd;
ccb->ccb_h.flags = CAM_DIR_OUT;
ccb->ccb_h.retry_count = 0;
ccb->ccb_h.timeout = 15 * 1000;
ccb->ccb_h.cbfcnp = mmcprobe_done;
}
static void
mmcprobe_start(struct cam_periph *periph, union ccb *start_ccb)
{
mmcprobe_softc *softc;
struct cam_path *path;
struct ccb_mmcio *mmcio;
struct mtx *p_mtx = cam_periph_mtx(periph);
struct ccb_trans_settings_mmc *cts;
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_PROBE, ("mmcprobe_start\n"));
softc = (mmcprobe_softc *)periph->softc;
path = start_ccb->ccb_h.path;
mmcio = &start_ccb->mmcio;
cts = &start_ccb->cts.proto_specific.mmc;
struct mmc_params *mmcp = &path->device->mmc_ident_data;
memset(&mmcio->cmd, 0, sizeof(struct mmc_command));
if (softc->restart) {
softc->restart = 0;
if (path->device->flags & CAM_DEV_UNCONFIGURED)
softc->action = PROBE_RESET;
else
softc->action = PROBE_IDENTIFY;
}
/* Here is the place where the identify fun begins */
switch (softc->action) {
case PROBE_RESET:
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_PROBE, ("Start with PROBE_RESET\n"));
/* FALLTHROUGH */
case PROBE_IDENTIFY:
xpt_path_inq(&start_ccb->cpi, periph->path);
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_PROBE, ("Start with PROBE_IDENTIFY\n"));
init_standard_ccb(start_ccb, XPT_GET_TRAN_SETTINGS);
xpt_action(start_ccb);
if (cts->ios.power_mode != power_off) {
init_standard_ccb(start_ccb, XPT_SET_TRAN_SETTINGS);
cts->ios.power_mode = power_off;
cts->ios_valid = MMC_PM;
xpt_action(start_ccb);
mtx_sleep(periph, p_mtx, 0, "mmcios", 100);
}
/* mmc_power_up */
/* Get the host OCR */
init_standard_ccb(start_ccb, XPT_GET_TRAN_SETTINGS);
xpt_action(start_ccb);
uint32_t host_caps = cts->host_caps;
if (host_caps & MMC_CAP_SIGNALING_180)
softc->flags |= PROBE_FLAG_HOST_CAN_DO_18V;
uint32_t hv = mmc_highest_voltage(cts->host_ocr);
init_standard_ccb(start_ccb, XPT_SET_TRAN_SETTINGS);
cts->ios.vdd = hv;
cts->ios.bus_mode = opendrain;
cts->ios.chip_select = cs_dontcare;
cts->ios.power_mode = power_up;
cts->ios.bus_width = bus_width_1;
cts->ios.clock = 0;
cts->ios_valid = MMC_VDD | MMC_PM | MMC_BM |
MMC_CS | MMC_BW | MMC_CLK;
xpt_action(start_ccb);
mtx_sleep(periph, p_mtx, 0, "mmcios", 100);
init_standard_ccb(start_ccb, XPT_SET_TRAN_SETTINGS);
cts->ios.power_mode = power_on;
cts->ios.clock = CARD_ID_FREQUENCY;
cts->ios.timing = bus_timing_normal;
cts->ios_valid = MMC_PM | MMC_CLK | MMC_BT;
xpt_action(start_ccb);
mtx_sleep(periph, p_mtx, 0, "mmcios", 100);
/* End for mmc_power_on */
/* Begin mmc_idle_cards() */
init_standard_ccb(start_ccb, XPT_SET_TRAN_SETTINGS);
cts->ios.chip_select = cs_high;
cts->ios_valid = MMC_CS;
xpt_action(start_ccb);
mtx_sleep(periph, p_mtx, 0, "mmcios", 1);
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_PROBE, ("Send first XPT_MMC_IO\n"));
init_standard_ccb(start_ccb, XPT_MMC_IO);
mmcio->cmd.opcode = MMC_GO_IDLE_STATE; /* CMD 0 */
mmcio->cmd.arg = 0;
mmcio->cmd.flags = MMC_RSP_NONE | MMC_CMD_BC;
mmcio->cmd.data = NULL;
mmcio->stop.opcode = 0;
/* XXX Reset I/O portion as well */
break;
case PROBE_SDIO_RESET:
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("Start with PROBE_SDIO_RESET\n"));
uint32_t mmc_arg = SD_IO_RW_ADR(SD_IO_CCCR_CTL)
| SD_IO_RW_DAT(CCCR_CTL_RES) | SD_IO_RW_WR | SD_IO_RW_RAW;
cam_fill_mmcio(&start_ccb->mmcio,
/*retries*/ 0,
/*cbfcnp*/ mmcprobe_done,
/*flags*/ CAM_DIR_NONE,
/*mmc_opcode*/ SD_IO_RW_DIRECT,
/*mmc_arg*/ mmc_arg,
/*mmc_flags*/ MMC_RSP_R5 | MMC_CMD_AC,
/*mmc_data*/ NULL,
/*timeout*/ 1000);
break;
case PROBE_SEND_IF_COND:
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("Start with PROBE_SEND_IF_COND\n"));
init_standard_ccb(start_ccb, XPT_MMC_IO);
mmcio->cmd.opcode = SD_SEND_IF_COND; /* CMD 8 */
mmcio->cmd.arg = (1 << 8) + 0xAA;
mmcio->cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR;
mmcio->stop.opcode = 0;
break;
case PROBE_SDIO_INIT:
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("Start with PROBE_SDIO_INIT\n"));
init_standard_ccb(start_ccb, XPT_MMC_IO);
mmcio->cmd.opcode = IO_SEND_OP_COND; /* CMD 5 */
mmcio->cmd.arg = mmcp->io_ocr;
mmcio->cmd.flags = MMC_RSP_R4;
mmcio->stop.opcode = 0;
break;
case PROBE_MMC_INIT:
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("Start with PROBE_MMC_INIT\n"));
init_standard_ccb(start_ccb, XPT_MMC_IO);
mmcio->cmd.opcode = MMC_SEND_OP_COND; /* CMD 1 */
mmcio->cmd.arg = MMC_OCR_CCS | mmcp->card_ocr; /* CCS + ocr */;
mmcio->cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
mmcio->stop.opcode = 0;
break;
case PROBE_SEND_APP_OP_COND:
init_standard_ccb(start_ccb, XPT_MMC_IO);
if (softc->flags & PROBE_FLAG_ACMD_SENT) {
mmcio->cmd.opcode = ACMD_SD_SEND_OP_COND; /* CMD 41 */
/*
* We set CCS bit because we do support SDHC cards.
* XXX: Don't set CCS if no response to CMD8.
*/
uint32_t cmd_arg = MMC_OCR_CCS | mmcp->card_ocr; /* CCS + ocr */
if (softc->acmd41_count < 10 && mmcp->card_ocr != 0 )
cmd_arg |= MMC_OCR_S18R;
mmcio->cmd.arg = cmd_arg;
mmcio->cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
softc->acmd41_count++;
} else {
mmcio->cmd.opcode = MMC_APP_CMD; /* CMD 55 */
mmcio->cmd.arg = 0; /* rca << 16 */
mmcio->cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
}
mmcio->stop.opcode = 0;
break;
case PROBE_GET_CID: /* XXX move to mmc_da */
init_standard_ccb(start_ccb, XPT_MMC_IO);
mmcio->cmd.opcode = MMC_ALL_SEND_CID;
mmcio->cmd.arg = 0;
mmcio->cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
mmcio->stop.opcode = 0;
break;
case PROBE_SEND_RELATIVE_ADDR:
init_standard_ccb(start_ccb, XPT_MMC_IO);
mmcio->cmd.opcode = SD_SEND_RELATIVE_ADDR;
mmcio->cmd.arg = 0;
mmcio->cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
mmcio->stop.opcode = 0;
break;
case PROBE_MMC_SET_RELATIVE_ADDR:
init_standard_ccb(start_ccb, XPT_MMC_IO);
mmcio->cmd.opcode = MMC_SET_RELATIVE_ADDR;
mmcio->cmd.arg = MMC_PROPOSED_RCA << 16;
mmcio->cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
mmcio->stop.opcode = 0;
break;
case PROBE_SELECT_CARD:
init_standard_ccb(start_ccb, XPT_MMC_IO);
mmcio->cmd.opcode = MMC_SELECT_CARD;
mmcio->cmd.arg = (uint32_t)path->device->mmc_ident_data.card_rca << 16;
mmcio->cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
mmcio->stop.opcode = 0;
break;
case PROBE_GET_CSD: /* XXX move to mmc_da */
init_standard_ccb(start_ccb, XPT_MMC_IO);
mmcio->cmd.opcode = MMC_SEND_CSD;
mmcio->cmd.arg = (uint32_t)path->device->mmc_ident_data.card_rca << 16;
mmcio->cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
mmcio->stop.opcode = 0;
break;
case PROBE_DONE:
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_PROBE, ("Start with PROBE_DONE\n"));
init_standard_ccb(start_ccb, XPT_SET_TRAN_SETTINGS);
cts->ios.bus_mode = pushpull;
cts->ios_valid = MMC_BM;
xpt_action(start_ccb);
return;
/* NOTREACHED */
break;
case PROBE_INVALID:
break;
default:
CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_PROBE, ("probestart: invalid action state 0x%x\n", softc->action));
panic("default: case in mmc_probe_start()");
}
start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
xpt_action(start_ccb);
}
static void mmcprobe_cleanup(struct cam_periph *periph)
{
free(periph->softc, M_CAMXPT);
}
static void
mmcprobe_done(struct cam_periph *periph, union ccb *done_ccb)
{
mmcprobe_softc *softc;
struct cam_path *path;
int err;
struct ccb_mmcio *mmcio;
u_int32_t priority;
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("mmcprobe_done\n"));
softc = (mmcprobe_softc *)periph->softc;
path = done_ccb->ccb_h.path;
priority = done_ccb->ccb_h.pinfo.priority;
switch (softc->action) {
case PROBE_RESET:
/* FALLTHROUGH */
case PROBE_IDENTIFY:
{
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE, ("done with PROBE_RESET\n"));
mmcio = &done_ccb->mmcio;
err = mmcio->cmd.error;
if (err != MMC_ERR_NONE) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("GO_IDLE_STATE failed with error %d\n",
err));
/* There was a device there, but now it's gone... */
if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("Device lost!\n"));
xpt_async(AC_LOST_DEVICE, path, NULL);
}
PROBE_SET_ACTION(softc, PROBE_INVALID);
break;
}
path->device->protocol = PROTO_MMCSD;
PROBE_SET_ACTION(softc, PROBE_SEND_IF_COND);
break;
}
case PROBE_SEND_IF_COND:
{
mmcio = &done_ccb->mmcio;
err = mmcio->cmd.error;
struct mmc_params *mmcp = &path->device->mmc_ident_data;
if (err != MMC_ERR_NONE || mmcio->cmd.resp[0] != 0x1AA) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("IF_COND: error %d, pattern %08x\n",
err, mmcio->cmd.resp[0]));
} else {
mmcp->card_features |= CARD_FEATURE_SD20;
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("SD 2.0 interface conditions: OK\n"));
}
PROBE_SET_ACTION(softc, PROBE_SDIO_RESET);
break;
}
case PROBE_SDIO_RESET:
{
mmcio = &done_ccb->mmcio;
err = mmcio->cmd.error;
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("SDIO_RESET: error %d, CCCR CTL register: %08x\n",
err, mmcio->cmd.resp[0]));
PROBE_SET_ACTION(softc, PROBE_SDIO_INIT);
break;
}
case PROBE_SDIO_INIT:
{
mmcio = &done_ccb->mmcio;
err = mmcio->cmd.error;
struct mmc_params *mmcp = &path->device->mmc_ident_data;
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("SDIO_INIT: error %d, %08x %08x %08x %08x\n",
err, mmcio->cmd.resp[0],
mmcio->cmd.resp[1],
mmcio->cmd.resp[2],
mmcio->cmd.resp[3]));
/*
* Error here means that this card is not SDIO,
* so proceed with memory init as if nothing has happened
*/
if (err != MMC_ERR_NONE) {
PROBE_SET_ACTION(softc, PROBE_SEND_APP_OP_COND);
break;
}
mmcp->card_features |= CARD_FEATURE_SDIO;
uint32_t ioifcond = mmcio->cmd.resp[0];
uint32_t io_ocr = ioifcond & R4_IO_OCR_MASK;
mmcp->sdio_func_count = R4_IO_NUM_FUNCTIONS(ioifcond);
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("SDIO card: %d functions\n", mmcp->sdio_func_count));
if (io_ocr == 0) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("SDIO OCR invalid, retrying\n"));
break; /* Retry */
}
if (io_ocr != 0 && mmcp->io_ocr == 0) {
mmcp->io_ocr = io_ocr;
break; /* Retry, this time with non-0 OCR */
}
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("SDIO OCR: %08x\n", mmcp->io_ocr));
if (ioifcond & R4_IO_MEM_PRESENT) {
/* Combo card -- proceed to memory initialization */
PROBE_SET_ACTION(softc, PROBE_SEND_APP_OP_COND);
} else {
/* No memory portion -- get RCA and select card */
PROBE_SET_ACTION(softc, PROBE_SEND_RELATIVE_ADDR);
}
break;
}
case PROBE_MMC_INIT:
{
mmcio = &done_ccb->mmcio;
err = mmcio->cmd.error;
struct mmc_params *mmcp = &path->device->mmc_ident_data;
if (err != MMC_ERR_NONE) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("MMC_INIT: error %d, resp %08x\n",
err, mmcio->cmd.resp[0]));
PROBE_SET_ACTION(softc, PROBE_INVALID);
break;
}
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("MMC card, OCR %08x\n", mmcio->cmd.resp[0]));
if (mmcp->card_ocr == 0) {
/* We haven't sent the OCR to the card yet -- do it */
mmcp->card_ocr = mmcio->cmd.resp[0];
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("-> sending OCR to card\n"));
break;
}
if (!(mmcio->cmd.resp[0] & MMC_OCR_CARD_BUSY)) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("Card is still powering up\n"));
break;
}
mmcp->card_features |= CARD_FEATURE_MMC | CARD_FEATURE_MEMORY;
PROBE_SET_ACTION(softc, PROBE_GET_CID);
break;
}
case PROBE_SEND_APP_OP_COND:
{
mmcio = &done_ccb->mmcio;
err = mmcio->cmd.error;
if (err != MMC_ERR_NONE) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("APP_OP_COND: error %d, resp %08x\n",
err, mmcio->cmd.resp[0]));
PROBE_SET_ACTION(softc, PROBE_MMC_INIT);
break;
}
if (!(softc->flags & PROBE_FLAG_ACMD_SENT)) {
/* Don't change the state */
softc->flags |= PROBE_FLAG_ACMD_SENT;
break;
}
softc->flags &= ~PROBE_FLAG_ACMD_SENT;
if ((mmcio->cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
(mmcio->cmd.arg & MMC_OCR_VOLTAGE) == 0) {
struct mmc_params *mmcp = &path->device->mmc_ident_data;
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("Card OCR: %08x\n", mmcio->cmd.resp[0]));
if (mmcp->card_ocr == 0) {
mmcp->card_ocr = mmcio->cmd.resp[0];
/* Now when we know OCR that we want -- send it to card */
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("-> sending OCR to card\n"));
} else {
/* We already know the OCR and despite of that we
* are processing the answer to ACMD41 -> move on
*/
PROBE_SET_ACTION(softc, PROBE_GET_CID);
}
/* Getting an answer to ACMD41 means the card has memory */
mmcp->card_features |= CARD_FEATURE_MEMORY;
/* Standard capacity vs High Capacity memory card */
if (mmcio->cmd.resp[0] & MMC_OCR_CCS) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("Card is SDHC\n"));
mmcp->card_features |= CARD_FEATURE_SDHC;
}
/* Whether the card supports 1.8V signaling */
if (mmcio->cmd.resp[0] & MMC_OCR_S18A) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("Card supports 1.8V signaling\n"));
mmcp->card_features |= CARD_FEATURE_18V;
if (softc->flags & PROBE_FLAG_HOST_CAN_DO_18V) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("Host supports 1.8V signaling. Switch voltage!\n"));
done_ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
done_ccb->ccb_h.flags = CAM_DIR_NONE;
done_ccb->ccb_h.retry_count = 0;
done_ccb->ccb_h.timeout = 100;
done_ccb->ccb_h.cbfcnp = NULL;
done_ccb->cts.proto_specific.mmc.ios.vccq = vccq_180;
done_ccb->cts.proto_specific.mmc.ios_valid = MMC_VCCQ;
xpt_action(done_ccb);
}
}
} else {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("Card not ready: %08x\n", mmcio->cmd.resp[0]));
/* Send CMD55+ACMD41 once again */
PROBE_SET_ACTION(softc, PROBE_SEND_APP_OP_COND);
}
break;
}
case PROBE_GET_CID: /* XXX move to mmc_da */
{
mmcio = &done_ccb->mmcio;
err = mmcio->cmd.error;
if (err != MMC_ERR_NONE) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("PROBE_GET_CID: error %d\n", err));
PROBE_SET_ACTION(softc, PROBE_INVALID);
break;
}
struct mmc_params *mmcp = &path->device->mmc_ident_data;
memcpy(mmcp->card_cid, mmcio->cmd.resp, 4 * sizeof(uint32_t));
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("CID %08x%08x%08x%08x\n",
mmcp->card_cid[0],
mmcp->card_cid[1],
mmcp->card_cid[2],
mmcp->card_cid[3]));
if (mmcp->card_features & CARD_FEATURE_MMC)
PROBE_SET_ACTION(softc, PROBE_MMC_SET_RELATIVE_ADDR);
else
PROBE_SET_ACTION(softc, PROBE_SEND_RELATIVE_ADDR);
break;
}
case PROBE_SEND_RELATIVE_ADDR: {
mmcio = &done_ccb->mmcio;
err = mmcio->cmd.error;
struct mmc_params *mmcp = &path->device->mmc_ident_data;
uint16_t rca = mmcio->cmd.resp[0] >> 16;
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("Card published RCA: %u\n", rca));
path->device->mmc_ident_data.card_rca = rca;
if (err != MMC_ERR_NONE) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("PROBE_SEND_RELATIVE_ADDR: error %d\n", err));
PROBE_SET_ACTION(softc, PROBE_INVALID);
break;
}
/* If memory is present, get CSD, otherwise select card */
if (mmcp->card_features & CARD_FEATURE_MEMORY)
PROBE_SET_ACTION(softc, PROBE_GET_CSD);
else
PROBE_SET_ACTION(softc, PROBE_SELECT_CARD);
break;
}
case PROBE_MMC_SET_RELATIVE_ADDR:
mmcio = &done_ccb->mmcio;
err = mmcio->cmd.error;
if (err != MMC_ERR_NONE) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("PROBE_MMC_SET_RELATIVE_ADDR: error %d\n", err));
PROBE_SET_ACTION(softc, PROBE_INVALID);
break;
}
path->device->mmc_ident_data.card_rca = MMC_PROPOSED_RCA;
PROBE_SET_ACTION(softc, PROBE_GET_CSD);
break;
case PROBE_GET_CSD: {
mmcio = &done_ccb->mmcio;
err = mmcio->cmd.error;
if (err != MMC_ERR_NONE) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("PROBE_GET_CSD: error %d\n", err));
PROBE_SET_ACTION(softc, PROBE_INVALID);
break;
}
struct mmc_params *mmcp = &path->device->mmc_ident_data;
memcpy(mmcp->card_csd, mmcio->cmd.resp, 4 * sizeof(uint32_t));
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("CSD %08x%08x%08x%08x\n",
mmcp->card_csd[0],
mmcp->card_csd[1],
mmcp->card_csd[2],
mmcp->card_csd[3]));
PROBE_SET_ACTION(softc, PROBE_SELECT_CARD);
break;
}
case PROBE_SELECT_CARD: {
mmcio = &done_ccb->mmcio;
err = mmcio->cmd.error;
if (err != MMC_ERR_NONE) {
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("PROBE_SEND_RELATIVE_ADDR: error %d\n", err));
PROBE_SET_ACTION(softc, PROBE_INVALID);
break;
}
PROBE_SET_ACTION(softc, PROBE_DONE);
break;
}
default:
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("mmcprobe_done: invalid action state 0x%x\n", softc->action));
panic("default: case in mmc_probe_done()");
}
if (softc->action == PROBE_INVALID &&
(path->device->flags & CAM_DEV_UNCONFIGURED) == 0) {
xpt_async(AC_LOST_DEVICE, path, NULL);
}
if (softc->action != PROBE_INVALID)
xpt_schedule(periph, priority);
/* Drop freeze taken due to CAM_DEV_QFREEZE flag set. */
int frozen = cam_release_devq(path, 0, 0, 0, FALSE);
CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_PROBE,
("mmcprobe_done: remaining freeze count %d\n", frozen));
if (softc->action == PROBE_DONE) {
/* Notify the system that the device is found! */
if (periph->path->device->flags & CAM_DEV_UNCONFIGURED) {
path->device->flags &= ~CAM_DEV_UNCONFIGURED;
xpt_acquire_device(path->device);
done_ccb->ccb_h.func_code = XPT_GDEV_TYPE;
xpt_action(done_ccb);
xpt_async(AC_FOUND_DEVICE, path, done_ccb);
}
}
xpt_release_ccb(done_ccb);
if (softc->action == PROBE_DONE || softc->action == PROBE_INVALID) {
cam_periph_invalidate(periph);
cam_periph_release_locked(periph);
}
}
void
mmc_path_inq(struct ccb_pathinq *cpi, const char *hba,
const struct cam_sim *sim, size_t maxio)
{
cpi->version_num = 1;
cpi->hba_inquiry = 0;
cpi->target_sprt = 0;
cpi->hba_misc = PIM_NOBUSRESET | PIM_SEQSCAN;
cpi->hba_eng_cnt = 0;
cpi->max_target = 0;
cpi->max_lun = 0;
cpi->initiator_id = 1;
cpi->maxio = maxio;
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(cpi->hba_vid, hba, HBA_IDLEN);
strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
cpi->unit_number = cam_sim_unit(sim);
cpi->bus_id = cam_sim_bus(sim);
cpi->protocol = PROTO_MMCSD;
cpi->protocol_version = SCSI_REV_0;
cpi->transport = XPORT_MMCSD;
cpi->transport_version = 1;
cpi->base_transfer_speed = 100; /* XXX WTF? */
cpi->ccb_h.status = CAM_REQ_CMP;
}
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