Merge branches 'cxgb4', 'misc', 'mlx4', 'nes' and 'uapi' into for-next

drivers/infiniband/hw/amso1100/c2_ae.c

@@ -311,6 +311,7 @@ void c2_ae_event(struct c2_dev *c2dev, u32 mq_index)
 		if (cq->ibcq.event_handler)
 			cq->ibcq.event_handler(&ib_event,
 					       cq->ibcq.cq_context);
+		break;
 	}
 
 	default:

drivers/infiniband/hw/cxgb3/iwch_cm.c

@@ -128,9 +128,8 @@ static void stop_ep_timer(struct iwch_ep *ep)
 {
 	PDBG("%s ep %p\n", __func__, ep);
 	if (!timer_pending(&ep->timer)) {
-		printk(KERN_ERR "%s timer stopped when its not running!  ep %p state %u\n",
+		WARN(1, "%s timer stopped when its not running!  ep %p state %u\n",
 			__func__, ep, ep->com.state);
-		WARN_ON(1);
 		return;
 	}
 	del_timer_sync(&ep->timer);
@@ -1756,9 +1755,8 @@ static void ep_timeout(unsigned long arg)
 		__state_set(&ep->com, ABORTING);
 		break;
 	default:
-		printk(KERN_ERR "%s unexpected state ep %p state %u\n",
+		WARN(1, "%s unexpected state ep %p state %u\n",
 			__func__, ep, ep->com.state);
-		WARN_ON(1);
 		abort = 0;
 	}
 	spin_unlock_irqrestore(&ep->com.lock, flags);

drivers/infiniband/hw/ipath/ipath_init_chip.c

@@ -718,16 +718,6 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit)
 	if (ret)
 		goto done;
 
-	/*
-	 * we ignore most issues after reporting them, but have to specially
-	 * handle hardware-disabled chips.
-	 */
-	if (ret == 2) {
-		/* unique error, known to ipath_init_one */
-		ret = -EPERM;
-		goto done;
-	}
-
 	/*
 	 * We could bump this to allow for full rcvegrcnt + rcvtidcnt,
 	 * but then it no longer nicely fits power of two, and since

drivers/infiniband/hw/mlx4/cq.c

@@ -66,7 +66,7 @@ static void mlx4_ib_cq_event(struct mlx4_cq *cq, enum mlx4_event type)
 
 static void *get_cqe_from_buf(struct mlx4_ib_cq_buf *buf, int n)
 {
-	return mlx4_buf_offset(&buf->buf, n * sizeof (struct mlx4_cqe));
+	return mlx4_buf_offset(&buf->buf, n * buf->entry_size);
 }
 
 static void *get_cqe(struct mlx4_ib_cq *cq, int n)
@@ -77,8 +77,9 @@ static void *get_cqe(struct mlx4_ib_cq *cq, int n)
 static void *get_sw_cqe(struct mlx4_ib_cq *cq, int n)
 {
 	struct mlx4_cqe *cqe = get_cqe(cq, n & cq->ibcq.cqe);
+	struct mlx4_cqe *tcqe = ((cq->buf.entry_size == 64) ? (cqe + 1) : cqe);
 
-	return (!!(cqe->owner_sr_opcode & MLX4_CQE_OWNER_MASK) ^
+	return (!!(tcqe->owner_sr_opcode & MLX4_CQE_OWNER_MASK) ^
 		!!(n & (cq->ibcq.cqe + 1))) ? NULL : cqe;
 }
 
@@ -99,12 +100,13 @@ static int mlx4_ib_alloc_cq_buf(struct mlx4_ib_dev *dev, struct mlx4_ib_cq_buf *
 {
 	int err;
 
-	err = mlx4_buf_alloc(dev->dev, nent * sizeof(struct mlx4_cqe),
+	err = mlx4_buf_alloc(dev->dev, nent * dev->dev->caps.cqe_size,
 			     PAGE_SIZE * 2, &buf->buf);
 
 	if (err)
 		goto out;
 
+	buf->entry_size = dev->dev->caps.cqe_size;
 	err = mlx4_mtt_init(dev->dev, buf->buf.npages, buf->buf.page_shift,
 				    &buf->mtt);
 	if (err)
@@ -120,8 +122,7 @@ err_mtt:
 	mlx4_mtt_cleanup(dev->dev, &buf->mtt);
 
 err_buf:
-	mlx4_buf_free(dev->dev, nent * sizeof(struct mlx4_cqe),
-			      &buf->buf);
+	mlx4_buf_free(dev->dev, nent * buf->entry_size, &buf->buf);
 
 out:
 	return err;
@@ -129,7 +130,7 @@ out:
 
 static void mlx4_ib_free_cq_buf(struct mlx4_ib_dev *dev, struct mlx4_ib_cq_buf *buf, int cqe)
 {
-	mlx4_buf_free(dev->dev, (cqe + 1) * sizeof(struct mlx4_cqe), &buf->buf);
+	mlx4_buf_free(dev->dev, (cqe + 1) * buf->entry_size, &buf->buf);
 }
 
 static int mlx4_ib_get_cq_umem(struct mlx4_ib_dev *dev, struct ib_ucontext *context,
@@ -137,8 +138,9 @@ static int mlx4_ib_get_cq_umem(struct mlx4_ib_dev *dev, struct ib_ucontext *cont
 			       u64 buf_addr, int cqe)
 {
 	int err;
+	int cqe_size = dev->dev->caps.cqe_size;
 
-	*umem = ib_umem_get(context, buf_addr, cqe * sizeof (struct mlx4_cqe),
+	*umem = ib_umem_get(context, buf_addr, cqe * cqe_size,
 			    IB_ACCESS_LOCAL_WRITE, 1);
 	if (IS_ERR(*umem))
 		return PTR_ERR(*umem);
@@ -331,16 +333,23 @@ static void mlx4_ib_cq_resize_copy_cqes(struct mlx4_ib_cq *cq)
 {
 	struct mlx4_cqe *cqe, *new_cqe;
 	int i;
+	int cqe_size = cq->buf.entry_size;
+	int cqe_inc = cqe_size == 64 ? 1 : 0;
 
 	i = cq->mcq.cons_index;
 	cqe = get_cqe(cq, i & cq->ibcq.cqe);
+	cqe += cqe_inc;
+
 	while ((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) != MLX4_CQE_OPCODE_RESIZE) {
 		new_cqe = get_cqe_from_buf(&cq->resize_buf->buf,
 					   (i + 1) & cq->resize_buf->cqe);
-		memcpy(new_cqe, get_cqe(cq, i & cq->ibcq.cqe), sizeof(struct mlx4_cqe));
+		memcpy(new_cqe, get_cqe(cq, i & cq->ibcq.cqe), cqe_size);
+		new_cqe += cqe_inc;
+
 		new_cqe->owner_sr_opcode = (cqe->owner_sr_opcode & ~MLX4_CQE_OWNER_MASK) |
 			(((i + 1) & (cq->resize_buf->cqe + 1)) ? MLX4_CQE_OWNER_MASK : 0);
 		cqe = get_cqe(cq, ++i & cq->ibcq.cqe);
+		cqe += cqe_inc;
 	}
 	++cq->mcq.cons_index;
 }
@@ -438,6 +447,7 @@ err_buf:
 
 out:
 	mutex_unlock(&cq->resize_mutex);
+
 	return err;
 }
 
@@ -586,6 +596,9 @@ repoll:
 	if (!cqe)
 		return -EAGAIN;
 
+	if (cq->buf.entry_size == 64)
+		cqe++;
+
 	++cq->mcq.cons_index;
 
 	/*
@@ -807,6 +820,7 @@ void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq)
 	int nfreed = 0;
 	struct mlx4_cqe *cqe, *dest;
 	u8 owner_bit;
+	int cqe_inc = cq->buf.entry_size == 64 ? 1 : 0;
 
 	/*
 	 * First we need to find the current producer index, so we
@@ -825,12 +839,16 @@ void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq)
 	 */
 	while ((int) --prod_index - (int) cq->mcq.cons_index >= 0) {
 		cqe = get_cqe(cq, prod_index & cq->ibcq.cqe);
+		cqe += cqe_inc;
+
 		if ((be32_to_cpu(cqe->vlan_my_qpn) & MLX4_CQE_QPN_MASK) == qpn) {
 			if (srq && !(cqe->owner_sr_opcode & MLX4_CQE_IS_SEND_MASK))
 				mlx4_ib_free_srq_wqe(srq, be16_to_cpu(cqe->wqe_index));
 			++nfreed;
 		} else if (nfreed) {
 			dest = get_cqe(cq, (prod_index + nfreed) & cq->ibcq.cqe);
+			dest += cqe_inc;
+
 			owner_bit = dest->owner_sr_opcode & MLX4_CQE_OWNER_MASK;
 			memcpy(dest, cqe, sizeof *cqe);
 			dest->owner_sr_opcode = owner_bit |

drivers/infiniband/hw/mlx4/main.c

@@ -563,15 +563,24 @@ static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 {
 	struct mlx4_ib_dev *dev = to_mdev(ibdev);
 	struct mlx4_ib_ucontext *context;
+	struct mlx4_ib_alloc_ucontext_resp_v3 resp_v3;
 	struct mlx4_ib_alloc_ucontext_resp resp;
 	int err;
 
 	if (!dev->ib_active)
 		return ERR_PTR(-EAGAIN);
 
-	resp.qp_tab_size      = dev->dev->caps.num_qps;
-	resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
-	resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
+	if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION) {
+		resp_v3.qp_tab_size      = dev->dev->caps.num_qps;
+		resp_v3.bf_reg_size      = dev->dev->caps.bf_reg_size;
+		resp_v3.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
+	} else {
+		resp.dev_caps	      = dev->dev->caps.userspace_caps;
+		resp.qp_tab_size      = dev->dev->caps.num_qps;
+		resp.bf_reg_size      = dev->dev->caps.bf_reg_size;
+		resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
+		resp.cqe_size	      = dev->dev->caps.cqe_size;
+	}
 
 	context = kmalloc(sizeof *context, GFP_KERNEL);
 	if (!context)
@@ -586,7 +595,11 @@ static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
 	INIT_LIST_HEAD(&context->db_page_list);
 	mutex_init(&context->db_page_mutex);
 
-	err = ib_copy_to_udata(udata, &resp, sizeof resp);
+	if (ibdev->uverbs_abi_ver == MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION)
+		err = ib_copy_to_udata(udata, &resp_v3, sizeof(resp_v3));
+	else
+		err = ib_copy_to_udata(udata, &resp, sizeof(resp));
+
 	if (err) {
 		mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
 		kfree(context);
@@ -1342,7 +1355,11 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
 	ibdev->ib_dev.num_comp_vectors	= dev->caps.num_comp_vectors;
 	ibdev->ib_dev.dma_device	= &dev->pdev->dev;
 
-	ibdev->ib_dev.uverbs_abi_ver	= MLX4_IB_UVERBS_ABI_VERSION;
+	if (dev->caps.userspace_caps)
+		ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
+	else
+		ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION;
+
 	ibdev->ib_dev.uverbs_cmd_mask	=
 		(1ull << IB_USER_VERBS_CMD_GET_CONTEXT)		|
 		(1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)	|

drivers/infiniband/hw/mlx4/mlx4_ib.h

@@ -90,6 +90,7 @@ struct mlx4_ib_xrcd {
 struct mlx4_ib_cq_buf {
 	struct mlx4_buf		buf;
 	struct mlx4_mtt		mtt;
+	int			entry_size;
 };
 
 struct mlx4_ib_cq_resize {

drivers/infiniband/hw/mlx4/user.h

@@ -40,7 +40,9 @@
  * Increment this value if any changes that break userspace ABI
  * compatibility are made.
  */
-#define MLX4_IB_UVERBS_ABI_VERSION	3
+
+#define MLX4_IB_UVERBS_NO_DEV_CAPS_ABI_VERSION	3
+#define MLX4_IB_UVERBS_ABI_VERSION		4
 
 /*
  * Make sure that all structs defined in this file remain laid out so
@@ -50,12 +52,20 @@
  * instead.
  */
 
-struct mlx4_ib_alloc_ucontext_resp {
+struct mlx4_ib_alloc_ucontext_resp_v3 {
 	__u32	qp_tab_size;
 	__u16	bf_reg_size;
 	__u16	bf_regs_per_page;
 };
 
+struct mlx4_ib_alloc_ucontext_resp {
+	__u32	dev_caps;
+	__u32	qp_tab_size;
+	__u16	bf_reg_size;
+	__u16	bf_regs_per_page;
+	__u32	cqe_size;
+};
+
 struct mlx4_ib_alloc_pd_resp {
 	__u32	pdn;
 	__u32	reserved;

drivers/infiniband/hw/nes/nes_cm.c

@@ -629,11 +629,9 @@ static void build_rdma0_msg(struct nes_cm_node *cm_node, struct nes_qp **nesqp_a
 
 	case SEND_RDMA_READ_ZERO:
 	default:
-		if (cm_node->send_rdma0_op != SEND_RDMA_READ_ZERO) {
-			printk(KERN_ERR "%s[%u]: Unsupported RDMA0 len operation=%u\n",
-				 __func__, __LINE__, cm_node->send_rdma0_op);
-			WARN_ON(1);
-		}
+		if (cm_node->send_rdma0_op != SEND_RDMA_READ_ZERO)
+			WARN(1, "Unsupported RDMA0 len operation=%u\n",
+			     cm_node->send_rdma0_op);
 		nes_debug(NES_DBG_CM, "Sending first rdma operation.\n");
 		wqe->wqe_words[NES_IWARP_SQ_WQE_MISC_IDX] =
 			cpu_to_le32(NES_IWARP_SQ_OP_RDMAR);

drivers/infiniband/hw/nes/nes_mgt.c

@@ -210,6 +210,9 @@ static struct sk_buff *nes_get_next_skb(struct nes_device *nesdev, struct nes_qp
 	}
 
 	while (1) {
+		if (skb_queue_empty(&nesqp->pau_list))
+			goto out;
+
 		seq = nes_get_seq(skb, ack, wnd, fin_rcvd, rst_rcvd);
 		if (seq == nextseq) {
 			if (skb->len || processacks)
@@ -218,14 +221,13 @@ static struct sk_buff *nes_get_next_skb(struct nes_device *nesdev, struct nes_qp
 			goto out;
 		}
 
-		if (skb->next == (struct sk_buff *)&nesqp->pau_list)
-			goto out;
-
 		old_skb = skb;
 		skb = skb->next;
 		skb_unlink(old_skb, &nesqp->pau_list);
 		nes_mgt_free_skb(nesdev, old_skb, PCI_DMA_TODEVICE);
 		nes_rem_ref_cm_node(nesqp->cm_node);
+		if (skb == (struct sk_buff *)&nesqp->pau_list)
+			goto out;
 	}
 	return skb;
 
@@ -245,7 +247,6 @@ static int get_fpdu_info(struct nes_device *nesdev, struct nes_qp *nesqp,
 	struct nes_rskb_cb *cb;
 	struct pau_fpdu_info *fpdu_info = NULL;
 	struct pau_fpdu_frag frags[MAX_FPDU_FRAGS];
-	unsigned long flags;
 	u32 fpdu_len = 0;
 	u32 tmp_len;
 	int frag_cnt = 0;
@@ -260,12 +261,10 @@ static int get_fpdu_info(struct nes_device *nesdev, struct nes_qp *nesqp,
 
 	*pau_fpdu_info = NULL;
 
-	spin_lock_irqsave(&nesqp->pau_lock, flags);
 	skb = nes_get_next_skb(nesdev, nesqp, NULL, nesqp->pau_rcv_nxt, &ack, &wnd, &fin_rcvd, &rst_rcvd);
-	if (!skb) {
-		spin_unlock_irqrestore(&nesqp->pau_lock, flags);
+	if (!skb)
 		goto out;
-	}
+
 	cb = (struct nes_rskb_cb *)&skb->cb[0];
 	if (skb->len) {
 		fpdu_len = be16_to_cpu(*(__be16 *) skb->data) + MPA_FRAMING;
@@ -290,10 +289,9 @@ static int get_fpdu_info(struct nes_device *nesdev, struct nes_qp *nesqp,
 
 			skb = nes_get_next_skb(nesdev, nesqp, skb,
 					       nesqp->pau_rcv_nxt + frag_tot, &ack, &wnd, &fin_rcvd, &rst_rcvd);
-			if (!skb) {
-				spin_unlock_irqrestore(&nesqp->pau_lock, flags);
+			if (!skb)
 				goto out;
-			} else if (rst_rcvd) {
+			if (rst_rcvd) {
 				/* rst received in the middle of fpdu */
 				for (; i >= 0; i--) {
 					skb_unlink(frags[i].skb, &nesqp->pau_list);
@@ -320,8 +318,6 @@ static int get_fpdu_info(struct nes_device *nesdev, struct nes_qp *nesqp,
 		frag_cnt = 1;
 	}
 
-	spin_unlock_irqrestore(&nesqp->pau_lock, flags);
-
 	/* Found one */
 	fpdu_info = kzalloc(sizeof(*fpdu_info), GFP_ATOMIC);
 	if (fpdu_info == NULL) {
@@ -383,9 +379,8 @@ static int get_fpdu_info(struct nes_device *nesdev, struct nes_qp *nesqp,
 
 		if (frags[i].skb->len == 0) {
 			/* Pull skb off the list - it will be freed in the callback */
-			spin_lock_irqsave(&nesqp->pau_lock, flags);
-			skb_unlink(frags[i].skb, &nesqp->pau_list);
-			spin_unlock_irqrestore(&nesqp->pau_lock, flags);
+			if (!skb_queue_empty(&nesqp->pau_list))
+				skb_unlink(frags[i].skb, &nesqp->pau_list);
 		} else {
 			/* Last skb still has data so update the seq */
 			iph = (struct iphdr *)(cb->data_start + ETH_HLEN);
@@ -414,14 +409,18 @@ static int forward_fpdus(struct nes_vnic *nesvnic, struct nes_qp *nesqp)
 	struct pau_fpdu_info *fpdu_info;
 	struct nes_hw_cqp_wqe *cqp_wqe;
 	struct nes_cqp_request *cqp_request;
+	unsigned long flags;
 	u64 u64tmp;
 	u32 u32tmp;
 	int rc;
 
 	while (1) {
+		spin_lock_irqsave(&nesqp->pau_lock, flags);
 		rc = get_fpdu_info(nesdev, nesqp, &fpdu_info);
-		if (fpdu_info == NULL)
+		if (rc || (fpdu_info == NULL)) {
+			spin_unlock_irqrestore(&nesqp->pau_lock, flags);
 			return rc;
+		}
 
 		cqp_request = fpdu_info->cqp_request;
 		cqp_wqe = &cqp_request->cqp_wqe;
@@ -447,7 +446,7 @@ static int forward_fpdus(struct nes_vnic *nesvnic, struct nes_qp *nesqp)
 		set_wqe_32bit_value(cqp_wqe->wqe_words, NES_NIC_SQ_WQE_FRAG0_LOW_IDX,
 				    lower_32_bits(u64tmp));
 		set_wqe_32bit_value(cqp_wqe->wqe_words, NES_NIC_SQ_WQE_FRAG0_HIGH_IDX,
-				    upper_32_bits(u64tmp >> 32));
+				    upper_32_bits(u64tmp));
 
 		set_wqe_32bit_value(cqp_wqe->wqe_words, NES_NIC_SQ_WQE_FRAG1_LOW_IDX,
 				    lower_32_bits(fpdu_info->frags[0].physaddr));
@@ -475,6 +474,7 @@ static int forward_fpdus(struct nes_vnic *nesvnic, struct nes_qp *nesqp)
 
 		atomic_set(&cqp_request->refcount, 1);
 		nes_post_cqp_request(nesdev, cqp_request);
+		spin_unlock_irqrestore(&nesqp->pau_lock, flags);
 	}
 
 	return 0;
@@ -649,11 +649,9 @@ static void nes_chg_qh_handler(struct nes_device *nesdev, struct nes_cqp_request
 	nesqp = qh_chg->nesqp;
 
 	/* Should we handle the bad completion */
-	if (cqp_request->major_code) {
-		printk(KERN_ERR PFX "Invalid cqp_request major_code=0x%x\n",
+	if (cqp_request->major_code)
+		WARN(1, PFX "Invalid cqp_request major_code=0x%x\n",
 		       cqp_request->major_code);
-		WARN_ON(1);
-	}
 
 	switch (nesqp->pau_state) {
 	case PAU_DEL_QH:

drivers/infiniband/hw/nes/nes_nic.c

@@ -944,12 +944,13 @@ static void nes_netdev_set_multicast_list(struct net_device *netdev)
 					  addr,
 					  perfect_filter_register_address+(mc_index * 8),
 					  mc_nic_index);
-				macaddr_high  = ((u16) addr[0]) << 8;
-				macaddr_high += (u16) addr[1];
-				macaddr_low   = ((u32) addr[2]) << 24;
-				macaddr_low  += ((u32) addr[3]) << 16;
-				macaddr_low  += ((u32) addr[4]) << 8;
-				macaddr_low  += (u32) addr[5];
+				macaddr_high  = ((u8) addr[0]) << 8;
+				macaddr_high += (u8) addr[1];
+				macaddr_low   = ((u8) addr[2]) << 24;
+				macaddr_low  += ((u8) addr[3]) << 16;
+				macaddr_low  += ((u8) addr[4]) << 8;
+				macaddr_low  += (u8) addr[5];
+
 				nes_write_indexed(nesdev,
 						perfect_filter_register_address+(mc_index * 8),
 						macaddr_low);