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arm: allwinner: aw_mmc: Add a sysctl for debuging

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Add a new hw.aw_mmc.debug sysctl to help debugging the driver.
Bit 0 will debug card changes (removal, insertion, power up/down)
Bit 1 will debug ios changes
Bit 2 will debug interrupts received
Bit 3 will debug commands sent
This commit is contained in:
Emmanuel Vadot 2020-11-30 14:48:50 +00:00
parent 93b18e3730
commit 020df50904
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=368185
1 changed files with 38 additions and 30 deletions
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68
sys/arm/allwinner/aw_mmc.c
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@ -191,6 +191,17 @@ static void aw_mmc_cam_handle_mmcio(struct cam_sim *, union ccb *);
#define AW_MMC_WRITE_4(_sc, _reg, _value) \
bus_write_4((_sc)->aw_res[AW_MMC_MEMRES], _reg, _value)
SYSCTL_NODE(_hw, OID_AUTO, aw_mmc, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
"aw_mmc driver");
static int aw_mmc_debug = 0;
SYSCTL_INT(_hw_aw_mmc, OID_AUTO, debug, CTLFLAG_RWTUN, &aw_mmc_debug, 0,
"Debug level bit0=card changes bit1=ios changes, bit2=interrupts, bit3=commands");
#define AW_MMC_DEBUG_CARD 0x1
#define AW_MMC_DEBUG_IOS 0x2
#define AW_MMC_DEBUG_INT 0x4
#define AW_MMC_DEBUG_CMD 0x8
#ifdef MMCCAM
static void
aw_mmc_cam_handle_mmcio(struct cam_sim *sim, union ccb *ccb)
@ -227,7 +238,7 @@ aw_mmc_cam_action(struct cam_sim *sim, union ccb *ccb)
{
struct ccb_trans_settings *cts = &ccb->cts;
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS))
device_printf(sc->aw_dev, "Got XPT_GET_TRAN_SETTINGS\n");
cts->protocol = PROTO_MMCSD;
@ -247,14 +258,14 @@ aw_mmc_cam_action(struct cam_sim *sim, union ccb *ccb)
}
case XPT_SET_TRAN_SETTINGS:
{
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS))
device_printf(sc->aw_dev, "Got XPT_SET_TRAN_SETTINGS\n");
aw_mmc_cam_settran_settings(sc, ccb);
ccb->ccb_h.status = CAM_REQ_CMP;
break;
}
case XPT_RESET_BUS:
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS))
device_printf(sc->aw_dev, "Got XPT_RESET_BUS, ACK it...\n");
ccb->ccb_h.status = CAM_REQ_CMP;
break;
@ -300,37 +311,37 @@ aw_mmc_cam_settran_settings(struct aw_mmc_softc *sc, union ccb *ccb)
/* Update only requested fields */
if (cts->ios_valid & MMC_CLK) {
ios->clock = new_ios->clock;
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS))
device_printf(sc->aw_dev, "Clock => %d\n", ios->clock);
}
if (cts->ios_valid & MMC_VDD) {
ios->vdd = new_ios->vdd;
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS))
device_printf(sc->aw_dev, "VDD => %d\n", ios->vdd);
}
if (cts->ios_valid & MMC_CS) {
ios->chip_select = new_ios->chip_select;
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS))
device_printf(sc->aw_dev, "CS => %d\n", ios->chip_select);
}
if (cts->ios_valid & MMC_BW) {
ios->bus_width = new_ios->bus_width;
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS))
device_printf(sc->aw_dev, "Bus width => %d\n", ios->bus_width);
}
if (cts->ios_valid & MMC_PM) {
ios->power_mode = new_ios->power_mode;
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS))
device_printf(sc->aw_dev, "Power mode => %d\n", ios->power_mode);
}
if (cts->ios_valid & MMC_BT) {
ios->timing = new_ios->timing;
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS))
device_printf(sc->aw_dev, "Timing => %d\n", ios->timing);
}
if (cts->ios_valid & MMC_BM) {
ios->bus_mode = new_ios->bus_mode;
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_IOS))
device_printf(sc->aw_dev, "Bus mode => %d\n", ios->bus_mode);
}
@ -346,14 +357,12 @@ aw_mmc_cam_request(struct aw_mmc_softc *sc, union ccb *ccb)
AW_MMC_LOCK(sc);
#ifdef DEBUG
if (__predict_false(bootverbose)) {
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CMD)) {
device_printf(sc->aw_dev, "CMD%u arg %#x flags %#x dlen %u dflags %#x\n",
mmcio->cmd.opcode, mmcio->cmd.arg, mmcio->cmd.flags,
mmcio->cmd.data != NULL ? (unsigned int) mmcio->cmd.data->len : 0,
mmcio->cmd.data != NULL ? mmcio->cmd.data->flags: 0);
}
#endif
if (mmcio->cmd.data != NULL) {
if (mmcio->cmd.data->len == 0 || mmcio->cmd.data->flags == 0)
panic("data->len = %d, data->flags = %d -- something is b0rked",
@ -384,7 +393,7 @@ aw_mmc_helper_cd_handler(device_t dev, bool present)
AW_MMC_LOCK(sc);
if (present) {
if (sc->child == NULL) {
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CARD))
device_printf(sc->aw_dev, "Card inserted\n");
sc->child = device_add_child(sc->aw_dev, "mmc", -1);
@ -398,7 +407,7 @@ aw_mmc_helper_cd_handler(device_t dev, bool present)
} else {
/* Card isn't present, detach if necessary */
if (sc->child != NULL) {
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CARD))
device_printf(sc->aw_dev, "Card removed\n");
AW_MMC_UNLOCK(sc);
@ -871,11 +880,9 @@ aw_mmc_req_done(struct aw_mmc_softc *sc)
#else
cmd = sc->aw_req->cmd;
#endif
#ifdef DEBUG
if (bootverbose) {
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CMD)) {
device_printf(sc->aw_dev, "%s: cmd %d err %d\n", __func__, cmd->opcode, cmd->error);
}
#endif
if (cmd->error != MMC_ERR_NONE) {
/* Reset the FIFO and DMA engines. */
mask = AW_MMC_GCTL_FIFO_RST | AW_MMC_GCTL_DMA_RST;
@ -1019,10 +1026,10 @@ aw_mmc_intr(void *arg)
AW_MMC_UNLOCK(sc);
return;
}
#ifdef DEBUG
device_printf(sc->aw_dev, "idst: %#x, imask: %#x, rint: %#x\n",
idst, imask, rint);
#endif
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_INT)) {
device_printf(sc->aw_dev, "idst: %#x, imask: %#x, rint: %#x\n",
idst, imask, rint);
}
#ifdef MMCCAM
if (sc->ccb == NULL) {
#else
@ -1035,9 +1042,10 @@ aw_mmc_intr(void *arg)
goto end;
}
if (rint & AW_MMC_INT_ERR_BIT) {
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_INT)) {
device_printf(sc->aw_dev, "error rint: 0x%08X\n", rint);
aw_mmc_print_error(rint);
aw_mmc_print_error(rint);
}
if (rint & AW_MMC_INT_RESP_TIMEOUT)
set_mmc_error(sc, MMC_ERR_TIMEOUT);
else
@ -1046,7 +1054,8 @@ aw_mmc_intr(void *arg)
goto end;
}
if (idst & AW_MMC_IDST_ERROR) {
device_printf(sc->aw_dev, "error idst: 0x%08x\n", idst);
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_INT))
device_printf(sc->aw_dev, "error idst: 0x%08x\n", idst);
set_mmc_error(sc, MMC_ERR_FAILED);
aw_mmc_req_done(sc);
goto end;
@ -1106,13 +1115,12 @@ aw_mmc_request(device_t bus, device_t child, struct mmc_request *req)
sc->aw_req = req;
cmd = req->cmd;
#ifdef DEBUG
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CMD)) {
device_printf(sc->aw_dev, "CMD%u arg %#x flags %#x dlen %u dflags %#x\n",
cmd->opcode, cmd->arg, cmd->flags,
cmd->data != NULL ? (unsigned int)cmd->data->len : 0,
cmd->data != NULL ? cmd->data->flags: 0);
#endif
}
#endif
cmdreg = AW_MMC_CMDR_LOAD;
imask = AW_MMC_INT_ERR_BIT;
@ -1413,7 +1421,7 @@ aw_mmc_update_ios(device_t bus, device_t child)
case power_on:
break;
case power_off:
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CARD))
device_printf(sc->aw_dev, "Powering down sd/mmc\n");
if (sc->mmc_helper.vmmc_supply)
@ -1424,7 +1432,7 @@ aw_mmc_update_ios(device_t bus, device_t child)
aw_mmc_reset(sc);
break;
case power_up:
if (bootverbose)
if (__predict_false(aw_mmc_debug & AW_MMC_DEBUG_CARD))
device_printf(sc->aw_dev, "Powering up sd/mmc\n");
if (sc->mmc_helper.vmmc_supply)