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-rw-r--r--drivers/infiniband/hw/qib/qib_iba7322.c120
-rw-r--r--drivers/infiniband/hw/qib/qib_init.c4
-rw-r--r--drivers/infiniband/hw/qib/qib_qsfp.c25
-rw-r--r--drivers/infiniband/hw/qib/qib_qsfp.h2
4 files changed, 94 insertions, 57 deletions
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index 708f4fea6af..86575fbcaef 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -2381,17 +2381,17 @@ static int qib_7322_bringup_serdes(struct qib_pportdata *ppd)
ppd->cpspec->ibcctrl_a |= SYM_MASK(IBCCtrlA_0, IBLinkEn);
set_vls(ppd);
+ /* Hold the link state machine for mezz boards */
+ qib_set_ib_7322_lstate(ppd, 0,
+ QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
+
+
/* be paranoid against later code motion, etc. */
spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
ppd->p_rcvctrl |= SYM_MASK(RcvCtrl_0, RcvIBPortEnable);
qib_write_kreg_port(ppd, krp_rcvctrl, ppd->p_rcvctrl);
spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
- /* Hold the link state machine for mezz boards */
- if (IS_QMH(dd) || IS_QME(dd))
- qib_set_ib_7322_lstate(ppd, 0,
- QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
-
/* Also enable IBSTATUSCHG interrupt. */
val = qib_read_kreg_port(ppd, krp_errmask);
qib_write_kreg_port(ppd, krp_errmask,
@@ -5229,6 +5229,8 @@ static int qib_7322_ib_updown(struct qib_pportdata *ppd, int ibup, u64 ibcs)
QIBL_IB_AUTONEG_INPROG)))
set_7322_ibspeed_fast(ppd, ppd->link_speed_enabled);
if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) {
+ struct qib_qsfp_data *qd =
+ &ppd->cpspec->qsfp_data;
/* unlock the Tx settings, speed may change */
qib_write_kreg_port(ppd, krp_tx_deemph_override,
SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
@@ -5236,6 +5238,12 @@ static int qib_7322_ib_updown(struct qib_pportdata *ppd, int ibup, u64 ibcs)
qib_cancel_sends(ppd);
/* on link down, ensure sane pcs state */
qib_7322_mini_pcs_reset(ppd);
+ /* schedule the qsfp refresh which should turn the link
+ off */
+ if (ppd->dd->flags & QIB_HAS_QSFP) {
+ qd->t_insert = get_jiffies_64();
+ schedule_work(&qd->work);
+ }
spin_lock_irqsave(&ppd->sdma_lock, flags);
if (__qib_sdma_running(ppd))
__qib_sdma_process_event(ppd,
@@ -5591,38 +5599,62 @@ static void qsfp_7322_event(struct work_struct *work)
qd = container_of(work, struct qib_qsfp_data, work);
ppd = qd->ppd;
- pwrup = qd->t_insert + msecs_to_jiffies(QSFP_PWR_LAG_MSEC);
+ pwrup = qd->t_insert +
+ msecs_to_jiffies(QSFP_PWR_LAG_MSEC - QSFP_MODPRS_LAG_MSEC);
- /*
- * Some QSFP's not only do not respond until the full power-up
- * time, but may behave badly if we try. So hold off responding
- * to insertion.
- */
- while (1) {
- u64 now = get_jiffies_64();
- if (time_after64(now, pwrup))
- break;
- msleep(20);
- }
- ret = qib_refresh_qsfp_cache(ppd, &qd->cache);
- /*
- * Need to change LE2 back to defaults if we couldn't
- * read the cable type (to handle cable swaps), so do this
- * even on failure to read cable information. We don't
- * get here for QME, so IS_QME check not needed here.
- */
- if (!ret && !ppd->dd->cspec->r1) {
- if (QSFP_IS_ACTIVE_FAR(qd->cache.tech))
- le2 = LE2_QME;
- else if (qd->cache.atten[1] >= qib_long_atten &&
- QSFP_IS_CU(qd->cache.tech))
- le2 = LE2_5m;
- else
+ /* Delay for 20 msecs to allow ModPrs resistor to setup */
+ mdelay(QSFP_MODPRS_LAG_MSEC);
+
+ if (!qib_qsfp_mod_present(ppd))
+ /* Set the physical link to disabled */
+ qib_set_ib_7322_lstate(ppd, 0,
+ QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
+ else {
+ /*
+ * Some QSFP's not only do not respond until the full power-up
+ * time, but may behave badly if we try. So hold off responding
+ * to insertion.
+ */
+ while (1) {
+ u64 now = get_jiffies_64();
+ if (time_after64(now, pwrup))
+ break;
+ msleep(20);
+ }
+
+ ret = qib_refresh_qsfp_cache(ppd, &qd->cache);
+
+ /*
+ * Need to change LE2 back to defaults if we couldn't
+ * read the cable type (to handle cable swaps), so do this
+ * even on failure to read cable information. We don't
+ * get here for QME, so IS_QME check not needed here.
+ */
+ if (!ret && !ppd->dd->cspec->r1) {
+ if (QSFP_IS_ACTIVE_FAR(qd->cache.tech))
+ le2 = LE2_QME;
+ else if (qd->cache.atten[1] >= qib_long_atten &&
+ QSFP_IS_CU(qd->cache.tech))
+ le2 = LE2_5m;
+ else
+ le2 = LE2_DEFAULT;
+ } else
le2 = LE2_DEFAULT;
- } else
- le2 = LE2_DEFAULT;
- ibsd_wr_allchans(ppd, 13, (le2 << 7), BMASK(9, 7));
- init_txdds_table(ppd, 0);
+ ibsd_wr_allchans(ppd, 13, (le2 << 7), BMASK(9, 7));
+ /*
+ * We always change parameteters, since we can choose
+ * values for cables without eeproms, and the cable may have
+ * changed from a cable with full or partial eeprom content
+ * to one with partial or no content.
+ */
+ init_txdds_table(ppd, 0);
+ /* The physical link is being re-enabled only when the
+ previous state was DISABLED. This should only happen when
+ the cable has been physically pulled. */
+ if (ppd->lflags & QIBL_IB_LINK_DISABLED)
+ qib_set_ib_7322_lstate(ppd, 0,
+ QLOGIC_IB_IBCC_LINKINITCMD_SLEEP);
+ }
}
/*
@@ -5726,7 +5758,8 @@ static void set_no_qsfp_atten(struct qib_devdata *dd, int change)
/* now change the IBC and serdes, overriding generic */
init_txdds_table(ppd, 1);
/* Re-enable the physical state machine on mezz boards
- * now that the correct settings have been set. */
+ * now that the correct settings have been set.
+ * QSFP boards are handles by the QSFP event handler */
if (IS_QMH(dd) || IS_QME(dd))
qib_set_ib_7322_lstate(ppd, 0,
QLOGIC_IB_IBCC_LINKINITCMD_SLEEP);
@@ -7148,7 +7181,8 @@ static void find_best_ent(struct qib_pportdata *ppd,
}
}
- /* Lookup serdes setting by cable type and attenuation */
+ /* Active cables don't have attenuation so we only set SERDES
+ * settings to account for the attenuation of the board traces. */
if (!override && QSFP_IS_ACTIVE(qd->tech)) {
*sdr_dds = txdds_sdr + ppd->dd->board_atten;
*ddr_dds = txdds_ddr + ppd->dd->board_atten;
@@ -7465,12 +7499,6 @@ static int serdes_7322_init_new(struct qib_pportdata *ppd)
u32 le_val, rxcaldone;
int chan, chan_done = (1 << SERDES_CHANS) - 1;
- /*
- * Initialize the Tx DDS tables. Also done every QSFP event,
- * for adapters with QSFP
- */
- init_txdds_table(ppd, 0);
-
/* Clear cmode-override, may be set from older driver */
ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 10, 0 << 14, 1 << 14);
@@ -7656,6 +7684,12 @@ static int serdes_7322_init_new(struct qib_pportdata *ppd)
/* VGA output common mode */
ibsd_wr_allchans(ppd, 12, (3 << 2), BMASK(3, 2));
+ /*
+ * Initialize the Tx DDS tables. Also done every QSFP event,
+ * for adapters with QSFP
+ */
+ init_txdds_table(ppd, 0);
+
return 0;
}
diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c
index 21ffa7c0915..b093a0b53b2 100644
--- a/drivers/infiniband/hw/qib/qib_init.c
+++ b/drivers/infiniband/hw/qib/qib_init.c
@@ -585,10 +585,6 @@ int qib_init(struct qib_devdata *dd, int reinit)
continue;
}
- /* let link come up, and enable IBC */
- spin_lock_irqsave(&ppd->lflags_lock, flags);
- ppd->lflags &= ~QIBL_IB_LINK_DISABLED;
- spin_unlock_irqrestore(&ppd->lflags_lock, flags);
portok++;
}
diff --git a/drivers/infiniband/hw/qib/qib_qsfp.c b/drivers/infiniband/hw/qib/qib_qsfp.c
index 3374a52232c..e06c4ed383f 100644
--- a/drivers/infiniband/hw/qib/qib_qsfp.c
+++ b/drivers/infiniband/hw/qib/qib_qsfp.c
@@ -273,18 +273,12 @@ int qib_refresh_qsfp_cache(struct qib_pportdata *ppd, struct qib_qsfp_cache *cp)
int ret;
int idx;
u16 cks;
- u32 mask;
u8 peek[4];
/* ensure sane contents on invalid reads, for cable swaps */
memset(cp, 0, sizeof(*cp));
- mask = QSFP_GPIO_MOD_PRS_N;
- if (ppd->hw_pidx)
- mask <<= QSFP_GPIO_PORT2_SHIFT;
-
- ret = ppd->dd->f_gpio_mod(ppd->dd, 0, 0, 0);
- if (ret & mask) {
+ if (!qib_qsfp_mod_present(ppd)) {
ret = -ENODEV;
goto bail;
}
@@ -444,6 +438,19 @@ const char * const qib_qsfp_devtech[16] = {
static const char *pwr_codes = "1.5W2.0W2.5W3.5W";
+int qib_qsfp_mod_present(struct qib_pportdata *ppd)
+{
+ u32 mask;
+ int ret;
+
+ mask = QSFP_GPIO_MOD_PRS_N <<
+ (ppd->hw_pidx * QSFP_GPIO_PORT2_SHIFT);
+ ret = ppd->dd->f_gpio_mod(ppd->dd, 0, 0, 0);
+
+ return !((ret & mask) >>
+ ((ppd->hw_pidx * QSFP_GPIO_PORT2_SHIFT) + 3));
+}
+
/*
* Initialize structures that control access to QSFP. Called once per port
* on cards that support QSFP.
@@ -452,7 +459,6 @@ void qib_qsfp_init(struct qib_qsfp_data *qd,
void (*fevent)(struct work_struct *))
{
u32 mask, highs;
- int pins;
struct qib_devdata *dd = qd->ppd->dd;
@@ -480,8 +486,7 @@ void qib_qsfp_init(struct qib_qsfp_data *qd,
mask <<= QSFP_GPIO_PORT2_SHIFT;
/* Do not try to wait here. Better to let event handle it */
- pins = dd->f_gpio_mod(dd, 0, 0, 0);
- if (pins & mask)
+ if (!qib_qsfp_mod_present(qd->ppd))
goto bail;
/* We see a module, but it may be unwise to look yet. Just schedule */
qd->t_insert = get_jiffies_64();
diff --git a/drivers/infiniband/hw/qib/qib_qsfp.h b/drivers/infiniband/hw/qib/qib_qsfp.h
index c109bbdc90a..786a92a25c2 100644
--- a/drivers/infiniband/hw/qib/qib_qsfp.h
+++ b/drivers/infiniband/hw/qib/qib_qsfp.h
@@ -34,6 +34,7 @@
#define QSFP_DEV 0xA0
#define QSFP_PWR_LAG_MSEC 2000
+#define QSFP_MODPRS_LAG_MSEC 20
/*
* Below are masks for various QSFP signals, for Port 1.
@@ -181,6 +182,7 @@ struct qib_qsfp_data {
extern int qib_refresh_qsfp_cache(struct qib_pportdata *ppd,
struct qib_qsfp_cache *cp);
+extern int qib_qsfp_mod_present(struct qib_pportdata *ppd);
extern void qib_qsfp_init(struct qib_qsfp_data *qd,
void (*fevent)(struct work_struct *));
extern void qib_qsfp_deinit(struct qib_qsfp_data *qd);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-18 18:42:13 +0000