Merge tag 'infiniband-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

infiniband changes for 3.3 merge window

* tag 'infiniband-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  rdma/core: Fix sparse warnings
  RDMA/cma: Fix endianness bugs
  RDMA/nes: Fix terminate during AE
  RDMA/nes: Make unnecessarily global nes_set_pau() static
  RDMA/nes: Change MDIO bus clock to 2.5MHz
  IB/cm: Fix layout of APR message
  IB/mlx4: Fix SL to 802.1Q priority-bits mapping for IBoE
  IB/qib: Default some module parameters optimally
  IB/qib: Optimize locking for get_txreq()
  IB/qib: Fix a possible data corruption when receiving packets
  IB/qib: Eliminate 64-bit jiffies use
  IB/qib: Fix style issues
  IB/uverbs: Protect QP multicast list

11 files changed, 70 insertions, 44 deletions

diff --git a/drivers/infiniband/hw/qib/qib_7220.h b/drivers/infiniband/hw/qib/qib_7220.h
index 21f374aa063..a5356cb4252 100644
--- a/drivers/infiniband/hw/qib/qib_7220.h
+++ b/drivers/infiniband/hw/qib/qib_7220.h
@@ -97,7 +97,7 @@ struct qib_chippport_specific {
 	u64 iblnkerrsnap;
 	u64 ibcctrl; /* kr_ibcctrl shadow */
 	u64 ibcddrctrl; /* kr_ibcddrctrl shadow */
-	u64 chase_end;
+	unsigned long chase_end;
 	u32 last_delay_mult;
 };
 
diff --git a/drivers/infiniband/hw/qib/qib_driver.c b/drivers/infiniband/hw/qib/qib_driver.c
index c90a55f4120..6fc9365ba8a 100644
--- a/drivers/infiniband/hw/qib/qib_driver.c
+++ b/drivers/infiniband/hw/qib/qib_driver.c
@@ -371,9 +371,8 @@ static u32 qib_rcv_hdrerr(struct qib_ctxtdata *rcd, struct qib_pportdata *ppd,
 						lnh == QIB_LRH_GRH,
 						qp,
 						be32_to_cpu(ohdr->bth[0]));
-				if (ruc_res) {
+				if (ruc_res)
 					goto unlock;
-				}
 
 				/* Only deal with RDMA Writes for now */
 				if (opcode <
diff --git a/drivers/infiniband/hw/qib/qib_iba6120.c b/drivers/infiniband/hw/qib/qib_iba6120.c
index 781a802a321..4f18e2d332d 100644
--- a/drivers/infiniband/hw/qib/qib_iba6120.c
+++ b/drivers/infiniband/hw/qib/qib_iba6120.c
@@ -2076,9 +2076,11 @@ static void qib_6120_config_ctxts(struct qib_devdata *dd)
 static void qib_update_6120_usrhead(struct qib_ctxtdata *rcd, u64 hd,
 				    u32 updegr, u32 egrhd, u32 npkts)
 {
-	qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
 	if (updegr)
 		qib_write_ureg(rcd->dd, ur_rcvegrindexhead, egrhd, rcd->ctxt);
+	mmiowb();
+	qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
+	mmiowb();
 }
 
 static u32 qib_6120_hdrqempty(struct qib_ctxtdata *rcd)
diff --git a/drivers/infiniband/hw/qib/qib_iba7220.c b/drivers/infiniband/hw/qib/qib_iba7220.c
index 439d3c503cd..3c722f79d6f 100644
--- a/drivers/infiniband/hw/qib/qib_iba7220.c
+++ b/drivers/infiniband/hw/qib/qib_iba7220.c
@@ -1051,7 +1051,7 @@ static void reenable_7220_chase(unsigned long opaque)
 static void handle_7220_chase(struct qib_pportdata *ppd, u64 ibcst)
 {
 	u8 ibclt;
-	u64 tnow;
+	unsigned long tnow;
 
 	ibclt = (u8)SYM_FIELD(ibcst, IBCStatus, LinkTrainingState);
 
@@ -1066,9 +1066,9 @@ static void handle_7220_chase(struct qib_pportdata *ppd, u64 ibcst)
 	case IB_7220_LT_STATE_CFGWAITRMT:
 	case IB_7220_LT_STATE_TXREVLANES:
 	case IB_7220_LT_STATE_CFGENH:
-		tnow = get_jiffies_64();
+		tnow = jiffies;
 		if (ppd->cpspec->chase_end &&
-		    time_after64(tnow, ppd->cpspec->chase_end)) {
+		    time_after(tnow, ppd->cpspec->chase_end)) {
 			ppd->cpspec->chase_end = 0;
 			qib_set_ib_7220_lstate(ppd,
 				QLOGIC_IB_IBCC_LINKCMD_DOWN,
@@ -2725,9 +2725,11 @@ static int qib_7220_set_loopback(struct qib_pportdata *ppd, const char *what)
 static void qib_update_7220_usrhead(struct qib_ctxtdata *rcd, u64 hd,
 				    u32 updegr, u32 egrhd, u32 npkts)
 {
-	qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
 	if (updegr)
 		qib_write_ureg(rcd->dd, ur_rcvegrindexhead, egrhd, rcd->ctxt);
+	mmiowb();
+	qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
+	mmiowb();
 }
 
 static u32 qib_7220_hdrqempty(struct qib_ctxtdata *rcd)
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index 1d5895941e1..41e92089e41 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -615,8 +615,8 @@ struct qib_chippport_specific {
 	u64 ibmalfsnap;
 	u64 ibcctrl_a; /* krp_ibcctrl_a shadow */
 	u64 ibcctrl_b; /* krp_ibcctrl_b shadow */
-	u64 qdr_dfe_time;
-	u64 chase_end;
+	unsigned long qdr_dfe_time;
+	unsigned long chase_end;
 	u32 autoneg_tries;
 	u32 recovery_init;
 	u32 qdr_dfe_on;
@@ -1672,7 +1672,8 @@ static void reenable_chase(unsigned long opaque)
 		QLOGIC_IB_IBCC_LINKINITCMD_POLL);
 }
 
-static void disable_chase(struct qib_pportdata *ppd, u64 tnow, u8 ibclt)
+static void disable_chase(struct qib_pportdata *ppd, unsigned long tnow,
+		u8 ibclt)
 {
 	ppd->cpspec->chase_end = 0;
 
@@ -1688,7 +1689,7 @@ static void disable_chase(struct qib_pportdata *ppd, u64 tnow, u8 ibclt)
 static void handle_serdes_issues(struct qib_pportdata *ppd, u64 ibcst)
 {
 	u8 ibclt;
-	u64 tnow;
+	unsigned long tnow;
 
 	ibclt = (u8)SYM_FIELD(ibcst, IBCStatusA_0, LinkTrainingState);
 
@@ -1703,9 +1704,9 @@ static void handle_serdes_issues(struct qib_pportdata *ppd, u64 ibcst)
 	case IB_7322_LT_STATE_CFGWAITRMT:
 	case IB_7322_LT_STATE_TXREVLANES:
 	case IB_7322_LT_STATE_CFGENH:
-		tnow = get_jiffies_64();
+		tnow = jiffies;
 		if (ppd->cpspec->chase_end &&
-		     time_after64(tnow, ppd->cpspec->chase_end))
+		     time_after(tnow, ppd->cpspec->chase_end))
 			disable_chase(ppd, tnow, ibclt);
 		else if (!ppd->cpspec->chase_end)
 			ppd->cpspec->chase_end = tnow + QIB_CHASE_TIME;
@@ -2714,7 +2715,7 @@ static noinline void unknown_7322_gpio_intr(struct qib_devdata *dd)
 			pins >>= SYM_LSB(EXTStatus, GPIOIn);
 			if (!(pins & mask)) {
 				++handled;
-				qd->t_insert = get_jiffies_64();
+				qd->t_insert = jiffies;
 				queue_work(ib_wq, &qd->work);
 			}
 		}
@@ -3602,7 +3603,7 @@ static void qib_7322_config_ctxts(struct qib_devdata *dd)
 	if (qib_rcvhdrcnt)
 		dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt, qib_rcvhdrcnt);
 	else
-		dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt,
+		dd->rcvhdrcnt = 2 * max(dd->cspec->rcvegrcnt,
 				    dd->num_pports > 1 ? 1024U : 2048U);
 }
 
@@ -4082,10 +4083,12 @@ static void qib_update_7322_usrhead(struct qib_ctxtdata *rcd, u64 hd,
 	 */
 	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)
 		qib_write_ureg(rcd->dd, ur_rcvegrindexhead, egrhd, rcd->ctxt);
+	mmiowb();
+	qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
+	qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
+	mmiowb();
 }
 
 static u32 qib_7322_hdrqempty(struct qib_ctxtdata *rcd)
@@ -4794,7 +4797,7 @@ static void qib_get_7322_faststats(unsigned long opaque)
 		    (ppd->lflags & (QIBL_LINKINIT | QIBL_LINKARMED |
 				    QIBL_LINKACTIVE)) &&
 		    ppd->cpspec->qdr_dfe_time &&
-		    time_after64(get_jiffies_64(), ppd->cpspec->qdr_dfe_time)) {
+		    time_is_before_jiffies(ppd->cpspec->qdr_dfe_time)) {
 			ppd->cpspec->qdr_dfe_on = 0;
 
 			qib_write_kreg_port(ppd, krp_static_adapt_dis(2),
@@ -5240,7 +5243,7 @@ static int qib_7322_ib_updown(struct qib_pportdata *ppd, int ibup, u64 ibcs)
 			/* schedule the qsfp refresh which should turn the link
 			   off */
 			if (ppd->dd->flags & QIB_HAS_QSFP) {
-				qd->t_insert = get_jiffies_64();
+				qd->t_insert = jiffies;
 				queue_work(ib_wq, &qd->work);
 			}
 			spin_lock_irqsave(&ppd->sdma_lock, flags);
@@ -5592,7 +5595,7 @@ static void qsfp_7322_event(struct work_struct *work)
 {
 	struct qib_qsfp_data *qd;
 	struct qib_pportdata *ppd;
-	u64 pwrup;
+	unsigned long pwrup;
 	unsigned long flags;
 	int ret;
 	u32 le2;
@@ -5620,8 +5623,7 @@ static void qsfp_7322_event(struct work_struct *work)
 		 * to insertion.
 		 */
 		while (1) {
-			u64 now = get_jiffies_64();
-			if (time_after64(now, pwrup))
+			if (time_is_before_jiffies(pwrup))
 				break;
 			msleep(20);
 		}
@@ -7506,7 +7508,7 @@ static int serdes_7322_init_old(struct qib_pportdata *ppd)
 
 static int serdes_7322_init_new(struct qib_pportdata *ppd)
 {
-	u64 tstart;
+	unsigned long tend;
 	u32 le_val, rxcaldone;
 	int chan, chan_done = (1 << SERDES_CHANS) - 1;
 
@@ -7611,10 +7613,8 @@ static int serdes_7322_init_new(struct qib_pportdata *ppd)
 	msleep(20);
 	/*       Start Calibration */
 	ibsd_wr_allchans(ppd, 4, (1 << 10), BMASK(10, 10));
-	tstart = get_jiffies_64();
-	while (chan_done &&
-	       !time_after64(get_jiffies_64(),
-			tstart + msecs_to_jiffies(500))) {
+	tend = jiffies + msecs_to_jiffies(500);
+	while (chan_done && !time_is_before_jiffies(tend)) {
 		msleep(20);
 		for (chan = 0; chan < SERDES_CHANS; ++chan) {
 			rxcaldone = ahb_mod(ppd->dd, IBSD(ppd->hw_pidx),
diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c
index 58b0f8ad4a2..cf0cd30adc8 100644
--- a/drivers/infiniband/hw/qib/qib_init.c
+++ b/drivers/infiniband/hw/qib/qib_init.c
@@ -1015,7 +1015,7 @@ static int __devinit qib_init_one(struct pci_dev *,
 #define DRIVER_LOAD_MSG "QLogic " QIB_DRV_NAME " loaded: "
 #define PFX QIB_DRV_NAME ": "
 
-static const struct pci_device_id qib_pci_tbl[] = {
+static DEFINE_PCI_DEVICE_TABLE(qib_pci_tbl) = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_PATHSCALE, PCI_DEVICE_ID_QLOGIC_IB_6120) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_IB_7220) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_IB_7322) },
diff --git a/drivers/infiniband/hw/qib/qib_pcie.c b/drivers/infiniband/hw/qib/qib_pcie.c
index 97a8bdf68e6..f695061d688 100644
--- a/drivers/infiniband/hw/qib/qib_pcie.c
+++ b/drivers/infiniband/hw/qib/qib_pcie.c
@@ -560,9 +560,9 @@ static int qib_tune_pcie_coalesce(struct qib_devdata *dd)
  * BIOS may not set PCIe bus-utilization parameters for best performance.
  * Check and optionally adjust them to maximize our throughput.
  */
-static int qib_pcie_caps;
+static int qib_pcie_caps = 0x51;
 module_param_named(pcie_caps, qib_pcie_caps, int, S_IRUGO);
-MODULE_PARM_DESC(pcie_caps, "Max PCIe tuning: Payload (4lsb), ReadReq (D4..7)");
+MODULE_PARM_DESC(pcie_caps, "Max PCIe tuning: Payload (0..3), ReadReq (4..7)");
 
 static int qib_tune_pcie_caps(struct qib_devdata *dd)
 {
diff --git a/drivers/infiniband/hw/qib/qib_qsfp.h b/drivers/infiniband/hw/qib/qib_qsfp.h
index 46002a9417c..91908f533a2 100644
--- a/drivers/infiniband/hw/qib/qib_qsfp.h
+++ b/drivers/infiniband/hw/qib/qib_qsfp.h
@@ -177,7 +177,7 @@ struct qib_qsfp_data {
 	struct qib_pportdata *ppd;
 	struct work_struct work;
 	struct qib_qsfp_cache cache;
-	u64 t_insert;
+	unsigned long t_insert;
 	u8 modpresent;
 };
 
diff --git a/drivers/infiniband/hw/qib/qib_sd7220.c b/drivers/infiniband/hw/qib/qib_sd7220.c
index de1a4b2f33c..ac065dd6b69 100644
--- a/drivers/infiniband/hw/qib/qib_sd7220.c
+++ b/drivers/infiniband/hw/qib/qib_sd7220.c
@@ -300,7 +300,7 @@ bail:
 }
 
 static void qib_sd_trimdone_monitor(struct qib_devdata *dd,
-       const char *where)
+	const char *where)
 {
 	int ret, chn, baduns;
 	u64 val;
diff --git a/drivers/infiniband/hw/qib/qib_sysfs.c b/drivers/infiniband/hw/qib/qib_sysfs.c
index 78fbd56879d..dae51604cfc 100644
--- a/drivers/infiniband/hw/qib/qib_sysfs.c
+++ b/drivers/infiniband/hw/qib/qib_sysfs.c
@@ -150,7 +150,7 @@ static ssize_t show_status(struct qib_pportdata *ppd, char *buf)
  * For userland compatibility, these offsets must remain fixed.
  * They are strings for QIB_STATUS_*
  */
-static const char *qib_status_str[] = {
+static const char * const qib_status_str[] = {
 	"Initted",
 	"",
 	"",
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index a894762da46..7b6c3bffa9d 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -913,8 +913,8 @@ static void copy_io(u32 __iomem *piobuf, struct qib_sge_state *ss,
 		__raw_writel(last, piobuf);
 }
 
-static struct qib_verbs_txreq *get_txreq(struct qib_ibdev *dev,
-					 struct qib_qp *qp, int *retp)
+static noinline struct qib_verbs_txreq *__get_txreq(struct qib_ibdev *dev,
+					   struct qib_qp *qp)
 {
 	struct qib_verbs_txreq *tx;
 	unsigned long flags;
@@ -926,8 +926,9 @@ static struct qib_verbs_txreq *get_txreq(struct qib_ibdev *dev,
 		struct list_head *l = dev->txreq_free.next;
 
 		list_del(l);
+		spin_unlock(&dev->pending_lock);
+		spin_unlock_irqrestore(&qp->s_lock, flags);
 		tx = list_entry(l, struct qib_verbs_txreq, txreq.list);
-		*retp = 0;
 	} else {
 		if (ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK &&
 		    list_empty(&qp->iowait)) {
@@ -935,14 +936,33 @@ static struct qib_verbs_txreq *get_txreq(struct qib_ibdev *dev,
 			qp->s_flags |= QIB_S_WAIT_TX;
 			list_add_tail(&qp->iowait, &dev->txwait);
 		}
-		tx = NULL;
 		qp->s_flags &= ~QIB_S_BUSY;
-		*retp = -EBUSY;
+		spin_unlock(&dev->pending_lock);
+		spin_unlock_irqrestore(&qp->s_lock, flags);
+		tx = ERR_PTR(-EBUSY);
 	}
+	return tx;
+}
 
-	spin_unlock(&dev->pending_lock);
-	spin_unlock_irqrestore(&qp->s_lock, flags);
+static inline struct qib_verbs_txreq *get_txreq(struct qib_ibdev *dev,
+					 struct qib_qp *qp)
+{
+	struct qib_verbs_txreq *tx;
+	unsigned long flags;
 
+	spin_lock_irqsave(&dev->pending_lock, flags);
+	/* assume the list non empty */
+	if (likely(!list_empty(&dev->txreq_free))) {
+		struct list_head *l = dev->txreq_free.next;
+
+		list_del(l);
+		spin_unlock_irqrestore(&dev->pending_lock, flags);
+		tx = list_entry(l, struct qib_verbs_txreq, txreq.list);
+	} else {
+		/* call slow path to get the extra lock */
+		spin_unlock_irqrestore(&dev->pending_lock, flags);
+		tx =  __get_txreq(dev, qp);
+	}
 	return tx;
 }
 
@@ -1122,9 +1142,9 @@ static int qib_verbs_send_dma(struct qib_qp *qp, struct qib_ib_header *hdr,
 		goto bail;
 	}
 
-	tx = get_txreq(dev, qp, &ret);
-	if (!tx)
-		goto bail;
+	tx = get_txreq(dev, qp);
+	if (IS_ERR(tx))
+		goto bail_tx;
 
 	control = dd->f_setpbc_control(ppd, plen, qp->s_srate,
 				       be16_to_cpu(hdr->lrh[0]) >> 12);
@@ -1195,6 +1215,9 @@ unaligned:
 	ibp->n_unaligned++;
 bail:
 	return ret;
+bail_tx:
+	ret = PTR_ERR(tx);
+	goto bail;
 }
 
 /*