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path: root/drivers/infiniband/hw
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-rw-r--r--drivers/infiniband/hw/qib/qib_iba7322.c270
1 files changed, 255 insertions, 15 deletions
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index 40f4a235332..d23297a307a 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))
@@ -1692,6 +1695,8 @@ 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 ||
@@ -1707,15 +1712,32 @@ 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);
+ }
}
}
@@ -5544,7 +5566,7 @@ 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);
/*
@@ -6519,7 +6541,7 @@ 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) {
@@ -7234,9 +7256,30 @@ 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 " Turning LOS %s for port %d\n",
+ (enable ? "on" : "off"), ppd->port);
+ 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;
/*
@@ -7294,9 +7337,7 @@ 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);
- 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);
@@ -7336,6 +7377,205 @@ 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 v1.2.3-18-g5258 (git 2.32.0) at 2024-12-27 04:58:57 +0000