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path: root/drivers/infiniband/hw/qib/qib_iba7322.c
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Diffstat (limited to 'drivers/infiniband/hw/qib/qib_iba7322.c')
-rw-r--r--drivers/infiniband/hw/qib/qib_iba7322.c392
1 files changed, 348 insertions, 44 deletions
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index 584d443b5335..4a2d21e15a70 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -71,6 +71,9 @@ static void qib_7322_mini_pcs_reset(struct qib_pportdata *);
static u32 ahb_mod(struct qib_devdata *, int, int, int, u32, u32);
static void ibsd_wr_allchans(struct qib_pportdata *, int, unsigned, unsigned);
+static void serdes_7322_los_enable(struct qib_pportdata *, int);
+static int serdes_7322_init_old(struct qib_pportdata *);
+static int serdes_7322_init_new(struct qib_pportdata *);
#define BMASK(msb, lsb) (((1 << ((msb) + 1 - (lsb))) - 1) << (lsb))
@@ -111,6 +114,21 @@ static ushort qib_singleport;
module_param_named(singleport, qib_singleport, ushort, S_IRUGO);
MODULE_PARM_DESC(singleport, "Use only IB port 1; more per-port buffer space");
+/*
+ * Receive header queue sizes
+ */
+static unsigned qib_rcvhdrcnt;
+module_param_named(rcvhdrcnt, qib_rcvhdrcnt, uint, S_IRUGO);
+MODULE_PARM_DESC(rcvhdrcnt, "receive header count");
+
+static unsigned qib_rcvhdrsize;
+module_param_named(rcvhdrsize, qib_rcvhdrsize, uint, S_IRUGO);
+MODULE_PARM_DESC(rcvhdrsize, "receive header size in 32-bit words");
+
+static unsigned qib_rcvhdrentsize;
+module_param_named(rcvhdrentsize, qib_rcvhdrentsize, uint, S_IRUGO);
+MODULE_PARM_DESC(rcvhdrentsize, "receive header entry size in 32-bit words");
+
#define MAX_ATTEN_LEN 64 /* plenty for any real system */
/* for read back, default index is ~5m copper cable */
static char txselect_list[MAX_ATTEN_LEN] = "10";
@@ -314,7 +332,7 @@ MODULE_PARM_DESC(txselect, \
#define krp_serdesctrl KREG_IBPORT_IDX(IBSerdesCtrl)
/*
- * Per-context kernel registers. Acess only with qib_read_kreg_ctxt()
+ * Per-context kernel registers. Access only with qib_read_kreg_ctxt()
* or qib_write_kreg_ctxt()
*/
#define krc_rcvhdraddr KREG_IDX(RcvHdrAddr0)
@@ -544,6 +562,7 @@ static void write_tx_serdes_param(struct qib_pportdata *, struct txdds_ent *);
#define TXDDS_TABLE_SZ 16 /* number of entries per speed in onchip table */
#define TXDDS_EXTRA_SZ 13 /* number of extra tx settings entries */
+#define TXDDS_MFG_SZ 2 /* number of mfg tx settings entries */
#define SERDES_CHANS 4 /* yes, it's obvious, but one less magic number */
#define H1_FORCE_VAL 8
@@ -1677,6 +1696,8 @@ static void handle_serdes_issues(struct qib_pportdata *ppd, u64 ibcst)
(ibcst & SYM_MASK(IBCStatusA_0, LinkSpeedQDR))) {
force_h1(ppd);
ppd->cpspec->qdr_reforce = 1;
+ if (!ppd->dd->cspec->r1)
+ serdes_7322_los_enable(ppd, 0);
} else if (ppd->cpspec->qdr_reforce &&
(ibcst & SYM_MASK(IBCStatusA_0, LinkSpeedQDR)) &&
(ibclt == IB_7322_LT_STATE_CFGENH ||
@@ -1692,18 +1713,37 @@ static void handle_serdes_issues(struct qib_pportdata *ppd, u64 ibcst)
ibclt <= IB_7322_LT_STATE_SLEEPQUIET)))
adj_tx_serdes(ppd);
- if (!ppd->cpspec->qdr_dfe_on && ibclt != IB_7322_LT_STATE_LINKUP &&
- ibclt <= IB_7322_LT_STATE_SLEEPQUIET) {
- ppd->cpspec->qdr_dfe_on = 1;
- ppd->cpspec->qdr_dfe_time = 0;
- /* On link down, reenable QDR adaptation */
- qib_write_kreg_port(ppd, krp_static_adapt_dis(2),
- ppd->dd->cspec->r1 ?
- QDR_STATIC_ADAPT_DOWN_R1 :
- QDR_STATIC_ADAPT_DOWN);
+ if (ibclt != IB_7322_LT_STATE_LINKUP) {
+ u8 ltstate = qib_7322_phys_portstate(ibcst);
+ u8 pibclt = (u8)SYM_FIELD(ppd->lastibcstat, IBCStatusA_0,
+ LinkTrainingState);
+ if (!ppd->dd->cspec->r1 &&
+ pibclt == IB_7322_LT_STATE_LINKUP &&
+ ltstate != IB_PHYSPORTSTATE_LINK_ERR_RECOVER &&
+ ltstate != IB_PHYSPORTSTATE_RECOVERY_RETRAIN &&
+ ltstate != IB_PHYSPORTSTATE_RECOVERY_WAITRMT &&
+ ltstate != IB_PHYSPORTSTATE_RECOVERY_IDLE)
+ /* If the link went down (but no into recovery,
+ * turn LOS back on */
+ serdes_7322_los_enable(ppd, 1);
+ if (!ppd->cpspec->qdr_dfe_on &&
+ ibclt <= IB_7322_LT_STATE_SLEEPQUIET) {
+ ppd->cpspec->qdr_dfe_on = 1;
+ ppd->cpspec->qdr_dfe_time = 0;
+ /* On link down, reenable QDR adaptation */
+ qib_write_kreg_port(ppd, krp_static_adapt_dis(2),
+ ppd->dd->cspec->r1 ?
+ QDR_STATIC_ADAPT_DOWN_R1 :
+ QDR_STATIC_ADAPT_DOWN);
+ printk(KERN_INFO QIB_DRV_NAME
+ " IB%u:%u re-enabled QDR adaptation "
+ "ibclt %x\n", ppd->dd->unit, ppd->port, ibclt);
+ }
}
}
+static int qib_7322_set_ib_cfg(struct qib_pportdata *, int, u32);
+
/*
* This is per-pport error handling.
* will likely get it's own MSIx interrupt (one for each port,
@@ -2323,6 +2363,11 @@ static int qib_7322_bringup_serdes(struct qib_pportdata *ppd)
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,
@@ -2348,10 +2393,9 @@ static void qib_7322_mini_quiet_serdes(struct qib_pportdata *ppd)
ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG;
spin_unlock_irqrestore(&ppd->lflags_lock, flags);
wake_up(&ppd->cpspec->autoneg_wait);
- cancel_delayed_work(&ppd->cpspec->autoneg_work);
+ cancel_delayed_work_sync(&ppd->cpspec->autoneg_work);
if (ppd->dd->cspec->r1)
- cancel_delayed_work(&ppd->cpspec->ipg_work);
- flush_scheduled_work();
+ cancel_delayed_work_sync(&ppd->cpspec->ipg_work);
ppd->cpspec->chase_end = 0;
if (ppd->cpspec->chase_timer.data) /* if initted */
@@ -2648,7 +2692,7 @@ static noinline void unknown_7322_gpio_intr(struct qib_devdata *dd)
if (!(pins & mask)) {
++handled;
qd->t_insert = get_jiffies_64();
- schedule_work(&qd->work);
+ queue_work(ib_wq, &qd->work);
}
}
}
@@ -2785,7 +2829,6 @@ static irqreturn_t qib_7322intr(int irq, void *data)
ctxtrbits &= ~rmask;
if (dd->rcd[i]) {
qib_kreceive(dd->rcd[i], NULL, &npkts);
- adjust_rcv_timeout(dd->rcd[i], npkts);
}
}
rmask <<= 1;
@@ -2835,7 +2878,6 @@ static irqreturn_t qib_7322pintr(int irq, void *data)
(1ULL << QIB_I_RCVURG_LSB)) << rcd->ctxt);
qib_kreceive(rcd, NULL, &npkts);
- adjust_rcv_timeout(rcd, npkts);
return IRQ_HANDLED;
}
@@ -3157,6 +3199,10 @@ static unsigned qib_7322_boardname(struct qib_devdata *dd)
case BOARD_QME7342:
n = "InfiniPath_QME7342";
break;
+ case 8:
+ n = "InfiniPath_QME7362";
+ dd->flags |= QIB_HAS_QSFP;
+ break;
case 15:
n = "InfiniPath_QLE7342_TEST";
dd->flags |= QIB_HAS_QSFP;
@@ -3475,11 +3521,6 @@ static void qib_7322_config_ctxts(struct qib_devdata *dd)
nchipctxts = qib_read_kreg32(dd, kr_contextcnt);
dd->cspec->numctxts = nchipctxts;
if (qib_n_krcv_queues > 1 && dd->num_pports) {
- /*
- * Set the mask for which bits from the QPN are used
- * to select a context number.
- */
- dd->qpn_mask = 0x3f;
dd->first_user_ctxt = NUM_IB_PORTS +
(qib_n_krcv_queues - 1) * dd->num_pports;
if (dd->first_user_ctxt > nchipctxts)
@@ -3530,8 +3571,11 @@ static void qib_7322_config_ctxts(struct qib_devdata *dd)
/* kr_rcvegrcnt changes based on the number of contexts enabled */
dd->cspec->rcvegrcnt = qib_read_kreg32(dd, kr_rcvegrcnt);
- dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt,
- dd->num_pports > 1 ? 1024U : 2048U);
+ if (qib_rcvhdrcnt)
+ dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt, qib_rcvhdrcnt);
+ else
+ dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt,
+ dd->num_pports > 1 ? 1024U : 2048U);
}
static int qib_7322_get_ib_cfg(struct qib_pportdata *ppd, int which)
@@ -4002,8 +4046,14 @@ static int qib_7322_set_ib_table(struct qib_pportdata *ppd, int which, void *t)
}
static void qib_update_7322_usrhead(struct qib_ctxtdata *rcd, u64 hd,
- u32 updegr, u32 egrhd)
+ u32 updegr, u32 egrhd, u32 npkts)
{
+ /*
+ * Need to write timeout register before updating rcvhdrhead to ensure
+ * that the timer is enabled on reception of a packet.
+ */
+ if (hd >> IBA7322_HDRHEAD_PKTINT_SHIFT)
+ adjust_rcv_timeout(rcd, npkts);
qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
if (updegr)
@@ -4926,8 +4976,8 @@ static void try_7322_autoneg(struct qib_pportdata *ppd)
set_7322_ibspeed_fast(ppd, QIB_IB_DDR);
qib_7322_mini_pcs_reset(ppd);
/* 2 msec is minimum length of a poll cycle */
- schedule_delayed_work(&ppd->cpspec->autoneg_work,
- msecs_to_jiffies(2));
+ queue_delayed_work(ib_wq, &ppd->cpspec->autoneg_work,
+ msecs_to_jiffies(2));
}
/*
@@ -5057,7 +5107,8 @@ static void try_7322_ipg(struct qib_pportdata *ppd)
ib_free_send_mad(send_buf);
retry:
delay = 2 << ppd->cpspec->ipg_tries;
- schedule_delayed_work(&ppd->cpspec->ipg_work, msecs_to_jiffies(delay));
+ queue_delayed_work(ib_wq, &ppd->cpspec->ipg_work,
+ msecs_to_jiffies(delay));
}
/*
@@ -5522,7 +5573,7 @@ static void qsfp_7322_event(struct work_struct *work)
u64 now = get_jiffies_64();
if (time_after64(now, pwrup))
break;
- msleep(1);
+ msleep(20);
}
ret = qib_refresh_qsfp_cache(ppd, &qd->cache);
/*
@@ -5531,9 +5582,16 @@ static void qsfp_7322_event(struct work_struct *work)
* even on failure to read cable information. We don't
* get here for QME, so IS_QME check not needed here.
*/
- le2 = (!ret && qd->cache.atten[1] >= qib_long_atten &&
- !ppd->dd->cspec->r1 && QSFP_IS_CU(qd->cache.tech)) ?
- LE2_5m : LE2_DEFAULT;
+ 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;
ibsd_wr_allchans(ppd, 13, (le2 << 7), BMASK(9, 7));
init_txdds_table(ppd, 0);
}
@@ -5579,6 +5637,7 @@ static void set_no_qsfp_atten(struct qib_devdata *dd, int change)
u32 pidx, unit, port, deflt, h1;
unsigned long val;
int any = 0, seth1;
+ int txdds_size;
str = txselect_list;
@@ -5587,6 +5646,10 @@ static void set_no_qsfp_atten(struct qib_devdata *dd, int change)
for (pidx = 0; pidx < dd->num_pports; ++pidx)
dd->pport[pidx].cpspec->no_eep = deflt;
+ txdds_size = TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ;
+ if (IS_QME(dd) || IS_QMH(dd))
+ txdds_size += TXDDS_MFG_SZ;
+
while (*nxt && nxt[1]) {
str = ++nxt;
unit = simple_strtoul(str, &nxt, 0);
@@ -5609,7 +5672,7 @@ static void set_no_qsfp_atten(struct qib_devdata *dd, int change)
;
continue;
}
- if (val >= TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ)
+ if (val >= txdds_size)
continue;
seth1 = 0;
h1 = 0; /* gcc thinks it might be used uninitted */
@@ -5633,6 +5696,11 @@ static void set_no_qsfp_atten(struct qib_devdata *dd, int change)
ppd->cpspec->h1_val = h1;
/* 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. */
+ if (IS_QMH(dd) || IS_QME(dd))
+ qib_set_ib_7322_lstate(ppd, 0,
+ QLOGIC_IB_IBCC_LINKINITCMD_SLEEP);
any++;
}
if (*nxt == '\n')
@@ -5661,10 +5729,11 @@ static int setup_txselect(const char *str, struct kernel_param *kp)
return -ENOSPC;
}
val = simple_strtoul(str, &n, 0);
- if (n == str || val >= (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ)) {
+ if (n == str || val >= (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ +
+ TXDDS_MFG_SZ)) {
printk(KERN_INFO QIB_DRV_NAME
"txselect_values must start with a number < %d\n",
- TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ);
+ TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ + TXDDS_MFG_SZ);
return -EINVAL;
}
strcpy(txselect_list, str);
@@ -5810,7 +5879,8 @@ static void write_7322_initregs(struct qib_devdata *dd)
unsigned n, regno;
unsigned long flags;
- if (!dd->qpn_mask || !dd->pport[pidx].link_speed_supported)
+ if (dd->n_krcv_queues < 2 ||
+ !dd->pport[pidx].link_speed_supported)
continue;
ppd = &dd->pport[pidx];
@@ -6097,8 +6167,10 @@ static int qib_init_7322_variables(struct qib_devdata *dd)
ppd++;
}
- dd->rcvhdrentsize = QIB_RCVHDR_ENTSIZE;
- dd->rcvhdrsize = QIB_DFLT_RCVHDRSIZE;
+ dd->rcvhdrentsize = qib_rcvhdrentsize ?
+ qib_rcvhdrentsize : QIB_RCVHDR_ENTSIZE;
+ dd->rcvhdrsize = qib_rcvhdrsize ?
+ qib_rcvhdrsize : QIB_DFLT_RCVHDRSIZE;
dd->rhf_offset = dd->rcvhdrentsize - sizeof(u64) / sizeof(u32);
/* we always allocate at least 2048 bytes for eager buffers */
@@ -6495,7 +6567,7 @@ static void qib_7322_txchk_change(struct qib_devdata *dd, u32 start,
/* make sure we see an updated copy next time around */
sendctrl_7322_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
sleeps++;
- msleep(1);
+ msleep(20);
}
switch (which) {
@@ -6993,6 +7065,12 @@ static const struct txdds_ent txdds_extra_qdr[TXDDS_EXTRA_SZ] = {
{ 0, 1, 0, 12 }, /* QMH7342 backplane settings */
};
+static const struct txdds_ent txdds_extra_mfg[TXDDS_MFG_SZ] = {
+ /* amp, pre, main, post */
+ { 0, 0, 0, 0 }, /* QME7342 mfg settings */
+ { 0, 0, 0, 6 }, /* QME7342 P2 mfg settings */
+};
+
static const struct txdds_ent *get_atten_table(const struct txdds_ent *txdds,
unsigned atten)
{
@@ -7066,6 +7144,16 @@ static void find_best_ent(struct qib_pportdata *ppd,
*sdr_dds = &txdds_extra_sdr[idx];
*ddr_dds = &txdds_extra_ddr[idx];
*qdr_dds = &txdds_extra_qdr[idx];
+ } else if ((IS_QME(ppd->dd) || IS_QMH(ppd->dd)) &&
+ ppd->cpspec->no_eep < (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ +
+ TXDDS_MFG_SZ)) {
+ idx = ppd->cpspec->no_eep - (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ);
+ printk(KERN_INFO QIB_DRV_NAME
+ " IB%u:%u use idx %u into txdds_mfg\n",
+ ppd->dd->unit, ppd->port, idx);
+ *sdr_dds = &txdds_extra_mfg[idx];
+ *ddr_dds = &txdds_extra_mfg[idx];
+ *qdr_dds = &txdds_extra_mfg[idx];
} else {
/* this shouldn't happen, it's range checked */
*sdr_dds = txdds_sdr + qib_long_atten;
@@ -7210,9 +7298,30 @@ static void ibsd_wr_allchans(struct qib_pportdata *ppd, int addr, unsigned data,
}
}
+static void serdes_7322_los_enable(struct qib_pportdata *ppd, int enable)
+{
+ u64 data = qib_read_kreg_port(ppd, krp_serdesctrl);
+ printk(KERN_INFO QIB_DRV_NAME " IB%u:%u Turning LOS %s\n",
+ ppd->dd->unit, ppd->port, (enable ? "on" : "off"));
+ if (enable)
+ data |= SYM_MASK(IBSerdesCtrl_0, RXLOSEN);
+ else
+ data &= ~SYM_MASK(IBSerdesCtrl_0, RXLOSEN);
+ qib_write_kreg_port(ppd, krp_serdesctrl, data);
+}
+
static int serdes_7322_init(struct qib_pportdata *ppd)
{
- u64 data;
+ int ret = 0;
+ if (ppd->dd->cspec->r1)
+ ret = serdes_7322_init_old(ppd);
+ else
+ ret = serdes_7322_init_new(ppd);
+ return ret;
+}
+
+static int serdes_7322_init_old(struct qib_pportdata *ppd)
+{
u32 le_val;
/*
@@ -7270,11 +7379,7 @@ static int serdes_7322_init(struct qib_pportdata *ppd)
ibsd_wr_allchans(ppd, 20, (2 << 10), BMASK(12, 10)); /* DDR */
ibsd_wr_allchans(ppd, 20, (4 << 13), BMASK(15, 13)); /* SDR */
- data = qib_read_kreg_port(ppd, krp_serdesctrl);
- /* Turn off IB latency mode */
- data &= ~SYM_MASK(IBSerdesCtrl_0, IB_LAT_MODE);
- qib_write_kreg_port(ppd, krp_serdesctrl, data |
- SYM_MASK(IBSerdesCtrl_0, RXLOSEN));
+ serdes_7322_los_enable(ppd, 1);
/* rxbistena; set 0 to avoid effects of it switch later */
ibsd_wr_allchans(ppd, 9, 0 << 15, 1 << 15);
@@ -7314,6 +7419,205 @@ static int serdes_7322_init(struct qib_pportdata *ppd)
return 0;
}
+static int serdes_7322_init_new(struct qib_pportdata *ppd)
+{
+ u64 tstart;
+ 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);
+
+ /* ensure no tx overrides from earlier driver loads */
+ qib_write_kreg_port(ppd, krp_tx_deemph_override,
+ SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
+ reset_tx_deemphasis_override));
+
+ /* START OF LSI SUGGESTED SERDES BRINGUP */
+ /* Reset - Calibration Setup */
+ /* Stop DFE adaptaion */
+ ibsd_wr_allchans(ppd, 1, 0, BMASK(9, 1));
+ /* Disable LE1 */
+ ibsd_wr_allchans(ppd, 13, 0, BMASK(5, 5));
+ /* Disable autoadapt for LE1 */
+ ibsd_wr_allchans(ppd, 1, 0, BMASK(15, 15));
+ /* Disable LE2 */
+ ibsd_wr_allchans(ppd, 13, 0, BMASK(6, 6));
+ /* Disable VGA */
+ ibsd_wr_allchans(ppd, 5, 0, BMASK(0, 0));
+ /* Disable AFE Offset Cancel */
+ ibsd_wr_allchans(ppd, 12, 0, BMASK(12, 12));
+ /* Disable Timing Loop */
+ ibsd_wr_allchans(ppd, 2, 0, BMASK(3, 3));
+ /* Disable Frequency Loop */
+ ibsd_wr_allchans(ppd, 2, 0, BMASK(4, 4));
+ /* Disable Baseline Wander Correction */
+ ibsd_wr_allchans(ppd, 13, 0, BMASK(13, 13));
+ /* Disable RX Calibration */
+ ibsd_wr_allchans(ppd, 4, 0, BMASK(10, 10));
+ /* Disable RX Offset Calibration */
+ ibsd_wr_allchans(ppd, 12, 0, BMASK(4, 4));
+ /* Select BB CDR */
+ ibsd_wr_allchans(ppd, 2, (1 << 15), BMASK(15, 15));
+ /* CDR Step Size */
+ ibsd_wr_allchans(ppd, 5, 0, BMASK(9, 8));
+ /* Enable phase Calibration */
+ ibsd_wr_allchans(ppd, 12, (1 << 5), BMASK(5, 5));
+ /* DFE Bandwidth [2:14-12] */
+ ibsd_wr_allchans(ppd, 2, (4 << 12), BMASK(14, 12));
+ /* DFE Config (4 taps only) */
+ ibsd_wr_allchans(ppd, 16, 0, BMASK(1, 0));
+ /* Gain Loop Bandwidth */
+ if (!ppd->dd->cspec->r1) {
+ ibsd_wr_allchans(ppd, 12, 1 << 12, BMASK(12, 12));
+ ibsd_wr_allchans(ppd, 12, 2 << 8, BMASK(11, 8));
+ } else {
+ ibsd_wr_allchans(ppd, 19, (3 << 11), BMASK(13, 11));
+ }
+ /* Baseline Wander Correction Gain [13:4-0] (leave as default) */
+ /* Baseline Wander Correction Gain [3:7-5] (leave as default) */
+ /* Data Rate Select [5:7-6] (leave as default) */
+ /* RX Parralel Word Width [3:10-8] (leave as default) */
+
+ /* RX REST */
+ /* Single- or Multi-channel reset */
+ /* RX Analog reset */
+ /* RX Digital reset */
+ ibsd_wr_allchans(ppd, 0, 0, BMASK(15, 13));
+ msleep(20);
+ /* RX Analog reset */
+ ibsd_wr_allchans(ppd, 0, (1 << 14), BMASK(14, 14));
+ msleep(20);
+ /* RX Digital reset */
+ ibsd_wr_allchans(ppd, 0, (1 << 13), BMASK(13, 13));
+ msleep(20);
+
+ /* setup LoS params; these are subsystem, so chan == 5 */
+ /* LoS filter threshold_count on, ch 0-3, set to 8 */
+ ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 5, 8 << 11, BMASK(14, 11));
+ ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 7, 8 << 4, BMASK(7, 4));
+ ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 8, 8 << 11, BMASK(14, 11));
+ ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 10, 8 << 4, BMASK(7, 4));
+
+ /* LoS filter threshold_count off, ch 0-3, set to 4 */
+ ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 6, 4 << 0, BMASK(3, 0));
+ ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 7, 4 << 8, BMASK(11, 8));
+ ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 9, 4 << 0, BMASK(3, 0));
+ ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 10, 4 << 8, BMASK(11, 8));
+
+ /* LoS filter select enabled */
+ ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 9, 1 << 15, 1 << 15);
+
+ /* LoS target data: SDR=4, DDR=2, QDR=1 */
+ ibsd_wr_allchans(ppd, 14, (1 << 3), BMASK(5, 3)); /* QDR */
+ ibsd_wr_allchans(ppd, 20, (2 << 10), BMASK(12, 10)); /* DDR */
+ ibsd_wr_allchans(ppd, 20, (4 << 13), BMASK(15, 13)); /* SDR */
+
+ /* Turn on LOS on initial SERDES init */
+ serdes_7322_los_enable(ppd, 1);
+ /* FLoop LOS gate: PPM filter enabled */
+ ibsd_wr_allchans(ppd, 38, 0 << 10, 1 << 10);
+
+ /* RX LATCH CALIBRATION */
+ /* Enable Eyefinder Phase Calibration latch */
+ ibsd_wr_allchans(ppd, 15, 1, BMASK(0, 0));
+ /* Enable RX Offset Calibration latch */
+ ibsd_wr_allchans(ppd, 12, (1 << 4), BMASK(4, 4));
+ msleep(20);
+ /* Start Calibration */
+ ibsd_wr_allchans(ppd, 4, (1 << 10), BMASK(10, 10));
+ tstart = get_jiffies_64();
+ while (chan_done &&
+ !time_after64(tstart, tstart + msecs_to_jiffies(500))) {
+ msleep(20);
+ for (chan = 0; chan < SERDES_CHANS; ++chan) {
+ rxcaldone = ahb_mod(ppd->dd, IBSD(ppd->hw_pidx),
+ (chan + (chan >> 1)),
+ 25, 0, 0);
+ if ((~rxcaldone & (u32)BMASK(9, 9)) == 0 &&
+ (~chan_done & (1 << chan)) == 0)
+ chan_done &= ~(1 << chan);
+ }
+ }
+ if (chan_done) {
+ printk(KERN_INFO QIB_DRV_NAME
+ " Serdes %d calibration not done after .5 sec: 0x%x\n",
+ IBSD(ppd->hw_pidx), chan_done);
+ } else {
+ for (chan = 0; chan < SERDES_CHANS; ++chan) {
+ rxcaldone = ahb_mod(ppd->dd, IBSD(ppd->hw_pidx),
+ (chan + (chan >> 1)),
+ 25, 0, 0);
+ if ((~rxcaldone & (u32)BMASK(10, 10)) == 0)
+ printk(KERN_INFO QIB_DRV_NAME
+ " Serdes %d chan %d calibration "
+ "failed\n", IBSD(ppd->hw_pidx), chan);
+ }
+ }
+
+ /* Turn off Calibration */
+ ibsd_wr_allchans(ppd, 4, 0, BMASK(10, 10));
+ msleep(20);
+
+ /* BRING RX UP */
+ /* Set LE2 value (May be overridden in qsfp_7322_event) */
+ le_val = IS_QME(ppd->dd) ? LE2_QME : LE2_DEFAULT;
+ ibsd_wr_allchans(ppd, 13, (le_val << 7), BMASK(9, 7));
+ /* Set LE2 Loop bandwidth */
+ ibsd_wr_allchans(ppd, 3, (7 << 5), BMASK(7, 5));
+ /* Enable LE2 */
+ ibsd_wr_allchans(ppd, 13, (1 << 6), BMASK(6, 6));
+ msleep(20);
+ /* Enable H0 only */
+ ibsd_wr_allchans(ppd, 1, 1, BMASK(9, 1));
+ /* gain hi stop 32 (22) (6:1) lo stop 7 (10:7) target 22 (13) (15:11) */
+ le_val = (ppd->dd->cspec->r1 || IS_QME(ppd->dd)) ? 0xb6c0 : 0x6bac;
+ ibsd_wr_allchans(ppd, 21, le_val, 0xfffe);
+ /* Enable VGA */
+ ibsd_wr_allchans(ppd, 5, 0, BMASK(0, 0));
+ msleep(20);
+ /* Set Frequency Loop Bandwidth */
+ ibsd_wr_allchans(ppd, 2, (7 << 5), BMASK(8, 5));
+ /* Enable Frequency Loop */
+ ibsd_wr_allchans(ppd, 2, (1 << 4), BMASK(4, 4));
+ /* Set Timing Loop Bandwidth */
+ ibsd_wr_allchans(ppd, 2, 0, BMASK(11, 9));
+ /* Enable Timing Loop */
+ ibsd_wr_allchans(ppd, 2, (1 << 3), BMASK(3, 3));
+ msleep(50);
+ /* Enable DFE
+ * Set receive adaptation mode. SDR and DDR adaptation are
+ * always on, and QDR is initially enabled; later disabled.
+ */
+ qib_write_kreg_port(ppd, krp_static_adapt_dis(0), 0ULL);
+ qib_write_kreg_port(ppd, krp_static_adapt_dis(1), 0ULL);
+ qib_write_kreg_port(ppd, krp_static_adapt_dis(2),
+ ppd->dd->cspec->r1 ?
+ QDR_STATIC_ADAPT_DOWN_R1 : QDR_STATIC_ADAPT_DOWN);
+ ppd->cpspec->qdr_dfe_on = 1;
+ /* Disable LE1 */
+ ibsd_wr_allchans(ppd, 13, (0 << 5), (1 << 5));
+ /* Disable auto adapt for LE1 */
+ ibsd_wr_allchans(ppd, 1, (0 << 15), BMASK(15, 15));
+ msleep(20);
+ /* Enable AFE Offset Cancel */
+ ibsd_wr_allchans(ppd, 12, (1 << 12), BMASK(12, 12));
+ /* Enable Baseline Wander Correction */
+ ibsd_wr_allchans(ppd, 12, (1 << 13), BMASK(13, 13));
+ /* Termination: rxtermctrl_r2d addr 11 bits [12:11] = 1 */
+ ibsd_wr_allchans(ppd, 11, (1 << 11), BMASK(12, 11));
+ /* VGA output common mode */
+ ibsd_wr_allchans(ppd, 12, (3 << 2), BMASK(3, 2));
+
+ return 0;
+}
+
/* start adjust QMH serdes parameters */
static void set_man_code(struct qib_pportdata *ppd, int chan, int code)
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-26 02:22:37 +0000