Auto-update from upstream

25 files changed, 1523 insertions, 665 deletions

diff --git a/drivers/infiniband/hw/mthca/Makefile b/drivers/infiniband/hw/mthca/Makefile
index 5dcbd43073e..c44f7bae542 100644
--- a/drivers/infiniband/hw/mthca/Makefile
+++ b/drivers/infiniband/hw/mthca/Makefile
@@ -1,5 +1,3 @@
-EXTRA_CFLAGS += -Idrivers/infiniband/include
-
 ifdef CONFIG_INFINIBAND_MTHCA_DEBUG
 EXTRA_CFLAGS += -DDEBUG
 endif
@@ -9,4 +7,4 @@ obj-$(CONFIG_INFINIBAND_MTHCA) += ib_mthca.o
 ib_mthca-y :=	mthca_main.o mthca_cmd.o mthca_profile.o mthca_reset.o \
 		mthca_allocator.o mthca_eq.o mthca_pd.o mthca_cq.o \
 		mthca_mr.o mthca_qp.o mthca_av.o mthca_mcg.o mthca_mad.o \
-		mthca_provider.o mthca_memfree.o mthca_uar.o
+		mthca_provider.o mthca_memfree.o mthca_uar.o mthca_srq.o
diff --git a/drivers/infiniband/hw/mthca/mthca_allocator.c b/drivers/infiniband/hw/mthca/mthca_allocator.c
index b1db48dd91d..9ba3211cef7 100644
--- a/drivers/infiniband/hw/mthca/mthca_allocator.c
+++ b/drivers/infiniband/hw/mthca/mthca_allocator.c
@@ -177,3 +177,119 @@ void mthca_array_cleanup(struct mthca_array *array, int nent)
 
 	kfree(array->page_list);
 }
+
+/*
+ * Handling for queue buffers -- we allocate a bunch of memory and
+ * register it in a memory region at HCA virtual address 0.  If the
+ * requested size is > max_direct, we split the allocation into
+ * multiple pages, so we don't require too much contiguous memory.
+ */
+
+int mthca_buf_alloc(struct mthca_dev *dev, int size, int max_direct,
+		    union mthca_buf *buf, int *is_direct, struct mthca_pd *pd,
+		    int hca_write, struct mthca_mr *mr)
+{
+	int err = -ENOMEM;
+	int npages, shift;
+	u64 *dma_list = NULL;
+	dma_addr_t t;
+	int i;
+
+	if (size <= max_direct) {
+		*is_direct = 1;
+		npages     = 1;
+		shift      = get_order(size) + PAGE_SHIFT;
+
+		buf->direct.buf = dma_alloc_coherent(&dev->pdev->dev,
+						     size, &t, GFP_KERNEL);
+		if (!buf->direct.buf)
+			return -ENOMEM;
+
+		pci_unmap_addr_set(&buf->direct, mapping, t);
+
+		memset(buf->direct.buf, 0, size);
+
+		while (t & ((1 << shift) - 1)) {
+			--shift;
+			npages *= 2;
+		}
+
+		dma_list = kmalloc(npages * sizeof *dma_list, GFP_KERNEL);
+		if (!dma_list)
+			goto err_free;
+
+		for (i = 0; i < npages; ++i)
+			dma_list[i] = t + i * (1 << shift);
+	} else {
+		*is_direct = 0;
+		npages     = (size + PAGE_SIZE - 1) / PAGE_SIZE;
+		shift      = PAGE_SHIFT;
+
+		dma_list = kmalloc(npages * sizeof *dma_list, GFP_KERNEL);
+		if (!dma_list)
+			return -ENOMEM;
+
+		buf->page_list = kmalloc(npages * sizeof *buf->page_list,
+					 GFP_KERNEL);
+		if (!buf->page_list)
+			goto err_out;
+
+		for (i = 0; i < npages; ++i)
+			buf->page_list[i].buf = NULL;
+
+		for (i = 0; i < npages; ++i) {
+			buf->page_list[i].buf =
+				dma_alloc_coherent(&dev->pdev->dev, PAGE_SIZE,
+						   &t, GFP_KERNEL);
+			if (!buf->page_list[i].buf)
+				goto err_free;
+
+			dma_list[i] = t;
+			pci_unmap_addr_set(&buf->page_list[i], mapping, t);
+
+			memset(buf->page_list[i].buf, 0, PAGE_SIZE);
+		}
+	}
+
+	err = mthca_mr_alloc_phys(dev, pd->pd_num,
+				  dma_list, shift, npages,
+				  0, size,
+				  MTHCA_MPT_FLAG_LOCAL_READ |
+				  (hca_write ? MTHCA_MPT_FLAG_LOCAL_WRITE : 0),
+				  mr);
+	if (err)
+		goto err_free;
+
+	kfree(dma_list);
+
+	return 0;
+
+err_free:
+	mthca_buf_free(dev, size, buf, *is_direct, NULL);
+
+err_out:
+	kfree(dma_list);
+
+	return err;
+}
+
+void mthca_buf_free(struct mthca_dev *dev, int size, union mthca_buf *buf,
+		    int is_direct, struct mthca_mr *mr)
+{
+	int i;
+
+	if (mr)
+		mthca_free_mr(dev, mr);
+
+	if (is_direct)
+		dma_free_coherent(&dev->pdev->dev, size, buf->direct.buf,
+				  pci_unmap_addr(&buf->direct, mapping));
+	else {
+		for (i = 0; i < (size + PAGE_SIZE - 1) / PAGE_SIZE; ++i)
+			dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
+					  buf->page_list[i].buf,
+					  pci_unmap_addr(&buf->page_list[i],
+							 mapping));
+		kfree(buf->page_list);
+	}
+}
diff --git a/drivers/infiniband/hw/mthca/mthca_av.c b/drivers/infiniband/hw/mthca/mthca_av.c
index d58dcbe6648..889e8509673 100644
--- a/drivers/infiniband/hw/mthca/mthca_av.c
+++ b/drivers/infiniband/hw/mthca/mthca_av.c
@@ -35,22 +35,22 @@
 
 #include <linux/init.h>
 
-#include <ib_verbs.h>
-#include <ib_cache.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_cache.h>
 
 #include "mthca_dev.h"
 
 struct mthca_av {
-	u32 port_pd;
-	u8  reserved1;
-	u8  g_slid;
-	u16 dlid;
-	u8  reserved2;
-	u8  gid_index;
-	u8  msg_sr;
-	u8  hop_limit;
-	u32 sl_tclass_flowlabel;
-	u32 dgid[4];
+	__be32 port_pd;
+	u8     reserved1;
+	u8     g_slid;
+	__be16 dlid;
+	u8     reserved2;
+	u8     gid_index;
+	u8     msg_sr;
+	u8     hop_limit;
+	__be32 sl_tclass_flowlabel;
+	__be32 dgid[4];
 };
 
 int mthca_create_ah(struct mthca_dev *dev,
@@ -128,7 +128,7 @@ on_hca_fail:
 			  av, (unsigned long) ah->avdma);
 		for (j = 0; j < 8; ++j)
 			printk(KERN_DEBUG "  [%2x] %08x\n",
-			       j * 4, be32_to_cpu(((u32 *) av)[j]));
+			       j * 4, be32_to_cpu(((__be32 *) av)[j]));
 	}
 
 	if (ah->type == MTHCA_AH_ON_HCA) {
@@ -169,7 +169,7 @@ int mthca_read_ah(struct mthca_dev *dev, struct mthca_ah *ah,
 
 	header->lrh.service_level   = be32_to_cpu(ah->av->sl_tclass_flowlabel) >> 28;
 	header->lrh.destination_lid = ah->av->dlid;
-	header->lrh.source_lid      = ah->av->g_slid & 0x7f;
+	header->lrh.source_lid      = cpu_to_be16(ah->av->g_slid & 0x7f);
 	if (ah->av->g_slid & 0x80) {
 		header->grh_present = 1;
 		header->grh.traffic_class =
diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c
index 1557a522d83..cc758a2d2bc 100644
--- a/drivers/infiniband/hw/mthca/mthca_cmd.c
+++ b/drivers/infiniband/hw/mthca/mthca_cmd.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -36,7 +37,7 @@
 #include <linux/pci.h>
 #include <linux/errno.h>
 #include <asm/io.h>
-#include <ib_mad.h>
+#include <rdma/ib_mad.h>
 
 #include "mthca_dev.h"
 #include "mthca_config_reg.h"
@@ -108,6 +109,7 @@ enum {
 	CMD_SW2HW_SRQ 	    = 0x35,
 	CMD_HW2SW_SRQ 	    = 0x36,
 	CMD_QUERY_SRQ       = 0x37,
+	CMD_ARM_SRQ         = 0x40,
 
 	/* QP/EE commands */
 	CMD_RST2INIT_QPEE   = 0x19,
@@ -219,20 +221,20 @@ static int mthca_cmd_post(struct mthca_dev *dev,
 	 * (and some architectures such as ia64 implement memcpy_toio
 	 * in terms of writeb).
 	 */
-	__raw_writel(cpu_to_be32(in_param >> 32),           dev->hcr + 0 * 4);
-	__raw_writel(cpu_to_be32(in_param & 0xfffffffful),  dev->hcr + 1 * 4);
-	__raw_writel(cpu_to_be32(in_modifier),              dev->hcr + 2 * 4);
-	__raw_writel(cpu_to_be32(out_param >> 32),          dev->hcr + 3 * 4);
-	__raw_writel(cpu_to_be32(out_param & 0xfffffffful), dev->hcr + 4 * 4);
-	__raw_writel(cpu_to_be32(token << 16),              dev->hcr + 5 * 4);
+	__raw_writel((__force u32) cpu_to_be32(in_param >> 32),           dev->hcr + 0 * 4);
+	__raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful),  dev->hcr + 1 * 4);
+	__raw_writel((__force u32) cpu_to_be32(in_modifier),              dev->hcr + 2 * 4);
+	__raw_writel((__force u32) cpu_to_be32(out_param >> 32),          dev->hcr + 3 * 4);
+	__raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), dev->hcr + 4 * 4);
+	__raw_writel((__force u32) cpu_to_be32(token << 16),              dev->hcr + 5 * 4);
 
 	/* __raw_writel may not order writes. */
 	wmb();
 
-	__raw_writel(cpu_to_be32((1 << HCR_GO_BIT)                |
-				 (event ? (1 << HCA_E_BIT) : 0)   |
-				 (op_modifier << HCR_OPMOD_SHIFT) |
-				 op),                       dev->hcr + 6 * 4);
+	__raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT)                |
+					       (event ? (1 << HCA_E_BIT) : 0)   |
+					       (op_modifier << HCR_OPMOD_SHIFT) |
+					       op),                       dev->hcr + 6 * 4);
 
 out:
 	up(&dev->cmd.hcr_sem);
@@ -273,12 +275,14 @@ static int mthca_cmd_poll(struct mthca_dev *dev,
 		goto out;
 	}
 
-	if (out_is_imm) {
-		memcpy_fromio(out_param, dev->hcr + HCR_OUT_PARAM_OFFSET, sizeof (u64));
-		be64_to_cpus(out_param);
-	}
+	if (out_is_imm)
+		*out_param = 
+			(u64) be32_to_cpu((__force __be32)
+					  __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
+			(u64) be32_to_cpu((__force __be32)
+					  __raw_readl(dev->hcr + HCR_OUT_PARAM_OFFSET + 4));
 
-	*status = be32_to_cpu(__raw_readl(dev->hcr + HCR_STATUS_OFFSET)) >> 24;
+	*status = be32_to_cpu((__force __be32) __raw_readl(dev->hcr + HCR_STATUS_OFFSET)) >> 24;
 
 out:
 	up(&dev->cmd.poll_sem);
@@ -1029,6 +1033,8 @@ int mthca_QUERY_DEV_LIM(struct mthca_dev *dev,
 
 	mthca_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
 		  dev_lim->max_qps, dev_lim->reserved_qps, dev_lim->qpc_entry_sz);
+	mthca_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
+		  dev_lim->max_srqs, dev_lim->reserved_srqs, dev_lim->srq_entry_sz);
 	mthca_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
 		  dev_lim->max_cqs, dev_lim->reserved_cqs, dev_lim->cqc_entry_sz);
 	mthca_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
@@ -1082,6 +1088,34 @@ out:
 	return err;
 }
 
+static void get_board_id(void *vsd, char *board_id)
+{
+	int i;
+
+#define VSD_OFFSET_SIG1		0x00
+#define VSD_OFFSET_SIG2		0xde
+#define VSD_OFFSET_MLX_BOARD_ID	0xd0
+#define VSD_OFFSET_TS_BOARD_ID	0x20
+
+#define VSD_SIGNATURE_TOPSPIN	0x5ad
+
+	memset(board_id, 0, MTHCA_BOARD_ID_LEN);
+
+	if (be16_to_cpup(vsd + VSD_OFFSET_SIG1) == VSD_SIGNATURE_TOPSPIN &&
+	    be16_to_cpup(vsd + VSD_OFFSET_SIG2) == VSD_SIGNATURE_TOPSPIN) {
+		strlcpy(board_id, vsd + VSD_OFFSET_TS_BOARD_ID, MTHCA_BOARD_ID_LEN);
+	} else {
+		/*
+		 * The board ID is a string but the firmware byte
+		 * swaps each 4-byte word before passing it back to
+		 * us.  Therefore we need to swab it before printing.
+		 */
+		for (i = 0; i < 4; ++i)
+			((u32 *) board_id)[i] =
+				swab32(*(u32 *) (vsd + VSD_OFFSET_MLX_BOARD_ID + i * 4));
+	}
+}
+
 int mthca_QUERY_ADAPTER(struct mthca_dev *dev,
 			struct mthca_adapter *adapter, u8 *status)
 {
@@ -1094,6 +1128,7 @@ int mthca_QUERY_ADAPTER(struct mthca_dev *dev,
 #define QUERY_ADAPTER_DEVICE_ID_OFFSET     0x04
 #define QUERY_ADAPTER_REVISION_ID_OFFSET   0x08
 #define QUERY_ADAPTER_INTA_PIN_OFFSET      0x10
+#define QUERY_ADAPTER_VSD_OFFSET           0x20
 
 	mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
 	if (IS_ERR(mailbox))
@@ -1111,6 +1146,9 @@ int mthca_QUERY_ADAPTER(struct mthca_dev *dev,
 	MTHCA_GET(adapter->revision_id, outbox, QUERY_ADAPTER_REVISION_ID_OFFSET);
 	MTHCA_GET(adapter->inta_pin, outbox,    QUERY_ADAPTER_INTA_PIN_OFFSET);
 
+	get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4,
+		     adapter->board_id);
+
 out:
 	mthca_free_mailbox(dev, mailbox);
 	return err;
@@ -1121,7 +1159,7 @@ int mthca_INIT_HCA(struct mthca_dev *dev,
 		   u8 *status)
 {
 	struct mthca_mailbox *mailbox;
-	u32 *inbox;
+	__be32 *inbox;
 	int err;
 
 #define INIT_HCA_IN_SIZE             	 0x200
@@ -1247,10 +1285,8 @@ int mthca_INIT_IB(struct mthca_dev *dev,
 #define INIT_IB_FLAG_SIG         (1 << 18)
 #define INIT_IB_FLAG_NG          (1 << 17)
 #define INIT_IB_FLAG_G0          (1 << 16)
-#define INIT_IB_FLAG_1X          (1 << 8)
-#define INIT_IB_FLAG_4X          (1 << 9)
-#define INIT_IB_FLAG_12X         (1 << 11)
 #define INIT_IB_VL_SHIFT         4
+#define INIT_IB_PORT_WIDTH_SHIFT 8
 #define INIT_IB_MTU_SHIFT        12
 #define INIT_IB_MAX_GID_OFFSET   0x06
 #define INIT_IB_MAX_PKEY_OFFSET  0x0a
@@ -1266,12 +1302,11 @@ int mthca_INIT_IB(struct mthca_dev *dev,
 	memset(inbox, 0, INIT_IB_IN_SIZE);
 
 	flags = 0;
-	flags |= param->enable_1x     ? INIT_IB_FLAG_1X  : 0;
-	flags |= param->enable_4x     ? INIT_IB_FLAG_4X  : 0;
 	flags |= param->set_guid0     ? INIT_IB_FLAG_G0  : 0;
 	flags |= param->set_node_guid ? INIT_IB_FLAG_NG  : 0;
 	flags |= param->set_si_guid   ? INIT_IB_FLAG_SIG : 0;
 	flags |= param->vl_cap << INIT_IB_VL_SHIFT;
+	flags |= param->port_width << INIT_IB_PORT_WIDTH_SHIFT;
 	flags |= param->mtu_cap << INIT_IB_MTU_SHIFT;
 	MTHCA_PUT(inbox, flags, INIT_IB_FLAGS_OFFSET);
 
@@ -1342,7 +1377,7 @@ int mthca_MAP_ICM(struct mthca_dev *dev, struct mthca_icm *icm, u64 virt, u8 *st
 int mthca_MAP_ICM_page(struct mthca_dev *dev, u64 dma_addr, u64 virt, u8 *status)
 {
 	struct mthca_mailbox *mailbox;
-	u64 *inbox;
+	__be64 *inbox;
 	int err;
 
 	mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
@@ -1468,6 +1503,27 @@ int mthca_HW2SW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
 			     CMD_TIME_CLASS_A, status);
 }
 
+int mthca_SW2HW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
+		    int srq_num, u8 *status)
+{
+	return mthca_cmd(dev, mailbox->dma, srq_num, 0, CMD_SW2HW_SRQ,
+			CMD_TIME_CLASS_A, status);
+}
+
+int mthca_HW2SW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
+		    int srq_num, u8 *status)
+{
+	return mthca_cmd_box(dev, 0, mailbox->dma, srq_num, 0,
+			     CMD_HW2SW_SRQ,
+			     CMD_TIME_CLASS_A, status);
+}
+
+int mthca_ARM_SRQ(struct mthca_dev *dev, int srq_num, int limit, u8 *status)
+{
+	return mthca_cmd(dev, limit, srq_num, 0, CMD_ARM_SRQ,
+			 CMD_TIME_CLASS_B, status);
+}
+
 int mthca_MODIFY_QP(struct mthca_dev *dev, int trans, u32 num,
 		    int is_ee, struct mthca_mailbox *mailbox, u32 optmask,
 		    u8 *status)
@@ -1513,7 +1569,7 @@ int mthca_MODIFY_QP(struct mthca_dev *dev, int trans, u32 num,
 				if (i % 8 == 0)
 					printk("  [%02x] ", i * 4);
 				printk(" %08x",
-				       be32_to_cpu(((u32 *) mailbox->buf)[i + 2]));
+				       be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
 				if ((i + 1) % 8 == 0)
 					printk("\n");
 			}
@@ -1533,7 +1589,7 @@ int mthca_MODIFY_QP(struct mthca_dev *dev, int trans, u32 num,
 				if (i % 8 == 0)
 					printk("[%02x] ", i * 4);
 				printk(" %08x",
-				       be32_to_cpu(((u32 *) mailbox->buf)[i + 2]));
+				       be32_to_cpu(((__be32 *) mailbox->buf)[i + 2]));
 				if ((i + 1) % 8 == 0)
 					printk("\n");
 			}
diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.h b/drivers/infiniband/hw/mthca/mthca_cmd.h
index ed517f175dd..65f976a13e0 100644
--- a/drivers/infiniband/hw/mthca/mthca_cmd.h
+++ b/drivers/infiniband/hw/mthca/mthca_cmd.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -35,7 +36,7 @@
 #ifndef MTHCA_CMD_H
 #define MTHCA_CMD_H
 
-#include <ib_verbs.h>
+#include <rdma/ib_verbs.h>
 
 #define MTHCA_MAILBOX_SIZE 4096
 
@@ -183,10 +184,11 @@ struct mthca_dev_lim {
 };
 
 struct mthca_adapter {
-	u32 vendor_id;
-	u32 device_id;
-	u32 revision_id;
-	u8  inta_pin;
+	u32  vendor_id;
+	u32  device_id;
+	u32  revision_id;
+	char board_id[MTHCA_BOARD_ID_LEN];
+	u8   inta_pin;
 };
 
 struct mthca_init_hca_param {
@@ -218,8 +220,7 @@ struct mthca_init_hca_param {
 };
 
 struct mthca_init_ib_param {
-	int enable_1x;
-	int enable_4x;
+	int port_width;
 	int vl_cap;
 	int mtu_cap;
 	u16 gid_cap;
@@ -297,6 +298,11 @@ int mthca_SW2HW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
 		   int cq_num, u8 *status);
 int mthca_HW2SW_CQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
 		   int cq_num, u8 *status);
+int mthca_SW2HW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
+		    int srq_num, u8 *status);
+int mthca_HW2SW_SRQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
+		    int srq_num, u8 *status);
+int mthca_ARM_SRQ(struct mthca_dev *dev, int srq_num, int limit, u8 *status);
 int mthca_MODIFY_QP(struct mthca_dev *dev, int trans, u32 num,
 		    int is_ee, struct mthca_mailbox *mailbox, u32 optmask,
 		    u8 *status);
diff --git a/drivers/infiniband/hw/mthca/mthca_config_reg.h b/drivers/infiniband/hw/mthca/mthca_config_reg.h
index b4bfbbfe2c3..afa56bfaab2 100644
--- a/drivers/infiniband/hw/mthca/mthca_config_reg.h
+++ b/drivers/infiniband/hw/mthca/mthca_config_reg.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
diff --git a/drivers/infiniband/hw/mthca/mthca_cq.c b/drivers/infiniband/hw/mthca/mthca_cq.c
index 5687c301452..8600b6c3e0c 100644
--- a/drivers/infiniband/hw/mthca/mthca_cq.c
+++ b/drivers/infiniband/hw/mthca/mthca_cq.c
@@ -2,6 +2,8 @@
  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
  * Copyright (c) 2005 Cisco Systems, Inc. All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -37,7 +39,7 @@
 #include <linux/init.h>
 #include <linux/hardirq.h>
 
-#include <ib_pack.h>
+#include <rdma/ib_pack.h>
 
 #include "mthca_dev.h"
 #include "mthca_cmd.h"
@@ -55,21 +57,21 @@ enum {
  * Must be packed because start is 64 bits but only aligned to 32 bits.
  */
 struct mthca_cq_context {
-	u32 flags;
-	u64 start;
-	u32 logsize_usrpage;
-	u32 error_eqn;		/* Tavor only */
-	u32 comp_eqn;
-	u32 pd;
-	u32 lkey;
-	u32 last_notified_index;
-	u32 solicit_producer_index;
-	u32 consumer_index;
-	u32 producer_index;
-	u32 cqn;
-	u32 ci_db;		/* Arbel only */
-	u32 state_db;		/* Arbel only */
-	u32 reserved;
+	__be32 flags;
+	__be64 start;
+	__be32 logsize_usrpage;
+	__be32 error_eqn;	/* Tavor only */
+	__be32 comp_eqn;
+	__be32 pd;
+	__be32 lkey;
+	__be32 last_notified_index;
+	__be32 solicit_producer_index;
+	__be32 consumer_index;
+	__be32 producer_index;
+	__be32 cqn;
+	__be32 ci_db;		/* Arbel only */
+	__be32 state_db;	/* Arbel only */
+	u32    reserved;
 } __attribute__((packed));
 
 #define MTHCA_CQ_STATUS_OK          ( 0 << 28)
@@ -108,31 +110,31 @@ enum {
 };
 
 struct mthca_cqe {
-	u32 my_qpn;
-	u32 my_ee;
-	u32 rqpn;
-	u16 sl_g_mlpath;
-	u16 rlid;
-	u32 imm_etype_pkey_eec;
-	u32 byte_cnt;
-	u32 wqe;
-	u8  opcode;
-	u8  is_send;
-	u8  reserved;
-	u8  owner;
+	__be32 my_qpn;
+	__be32 my_ee;
+	__be32 rqpn;
+	__be16 sl_g_mlpath;
+	__be16 rlid;
+	__be32 imm_etype_pkey_eec;
+	__be32 byte_cnt;
+	__be32 wqe;
+	u8     opcode;
+	u8     is_send;
+	u8     reserved;
+	u8     owner;
 };
 
 struct mthca_err_cqe {
-	u32 my_qpn;
-	u32 reserved1[3];
-	u8  syndrome;
-	u8  reserved2;
-	u16 db_cnt;
-	u32 reserved3;
-	u32 wqe;
-	u8  opcode;
-	u8  reserved4[2];
-	u8  owner;
+	__be32 my_qpn;
+	u32    reserved1[3];
+	u8     syndrome;
+	u8     reserved2;
+	__be16 db_cnt;
+	u32    reserved3;
+	__be32 wqe;
+	u8     opcode;
+	u8     reserved4[2];
+	u8     owner;
 };
 
 #define MTHCA_CQ_ENTRY_OWNER_SW      (0 << 7)
@@ -191,7 +193,7 @@ static void dump_cqe(struct mthca_dev *dev, void *cqe_ptr)
 static inline void update_cons_index(struct mthca_dev *dev, struct mthca_cq *cq,
 				     int incr)
 {
-	u32 doorbell[2];
+	__be32 doorbell[2];
 
 	if (mthca_is_memfree(dev)) {
 		*cq->set_ci_db = cpu_to_be32(cq->cons_index);
@@ -222,7 +224,8 @@ void mthca_cq_event(struct mthca_dev *dev, u32 cqn)
 	cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context);
 }
 
-void mthca_cq_clean(struct mthca_dev *dev, u32 cqn, u32 qpn)
+void mthca_cq_clean(struct mthca_dev *dev, u32 cqn, u32 qpn,
+		    struct mthca_srq *srq)
 {
 	struct mthca_cq *cq;
 	struct mthca_cqe *cqe;
@@ -263,8 +266,11 @@ void mthca_cq_clean(struct mthca_dev *dev, u32 cqn, u32 qpn)
 	 */
 	while (prod_index > cq->cons_index) {
 		cqe = get_cqe(cq, (prod_index - 1) & cq->ibcq.cqe);
-		if (cqe->my_qpn == cpu_to_be32(qpn))
+		if (cqe->my_qpn == cpu_to_be32(qpn)) {
+			if (srq)
+				mthca_free_srq_wqe(srq, be32_to_cpu(cqe->wqe));
 			++nfreed;
+		}
 		else if (nfreed)
 			memcpy(get_cqe(cq, (prod_index - 1 + nfreed) &
 				       cq->ibcq.cqe),
@@ -291,7 +297,7 @@ static int handle_error_cqe(struct mthca_dev *dev, struct mthca_cq *cq,
 {
 	int err;
 	int dbd;
-	u32 new_wqe;
+	__be32 new_wqe;
 
 	if (cqe->syndrome == SYNDROME_LOCAL_QP_OP_ERR) {
 		mthca_dbg(dev, "local QP operation err "
@@ -365,6 +371,13 @@ static int handle_error_cqe(struct mthca_dev *dev, struct mthca_cq *cq,
 		break;
 	}
 
+	/*
+	 * Mem-free HCAs always generate one CQE per WQE, even in the
+	 * error case, so we don't have to check the doorbell count, etc.
+	 */
+	if (mthca_is_memfree(dev))
+		return 0;
+
 	err = mthca_free_err_wqe(dev, qp, is_send, wqe_index, &dbd, &new_wqe);
 	if (err)
 		return err;
@@ -373,12 +386,8 @@ static int handle_error_cqe(struct mthca_dev *dev, struct mthca_cq *cq,
 	 * If we're at the end of the WQE chain, or we've used up our
 	 * doorbell count, free the CQE.  Otherwise just update it for
 	 * the next poll operation.
-	 *
-	 * This does not apply to mem-free HCAs: they don't use the
-	 * doorbell count field, and so we should always free the CQE.
 	 */
-	if (mthca_is_memfree(dev) ||
-	    !(new_wqe & cpu_to_be32(0x3f)) || (!cqe->db_cnt && dbd))
+	if (!(new_wqe & cpu_to_be32(0x3f)) || (!cqe->db_cnt && dbd))
 		return 0;
 
 	cqe->db_cnt   = cpu_to_be16(be16_to_cpu(cqe->db_cnt) - dbd);
@@ -450,23 +459,27 @@ static inline int mthca_poll_one(struct mthca_dev *dev,
 			     >> wq->wqe_shift);
 		entry->wr_id = (*cur_qp)->wrid[wqe_index +
 					       (*cur_qp)->rq.max];
+	} else if ((*cur_qp)->ibqp.srq) {
+		struct mthca_srq *srq = to_msrq((*cur_qp)->ibqp.srq);
+		u32 wqe = be32_to_cpu(cqe->wqe);
+		wq = NULL;
+		wqe_index = wqe >> srq->wqe_shift;
+		entry->wr_id = srq->wrid[wqe_index];
+		mthca_free_srq_wqe(srq, wqe);
 	} else {
 		wq = &(*cur_qp)->rq;
 		wqe_index = be32_to_cpu(cqe->wqe) >> wq->wqe_shift;
 		entry->wr_id = (*cur_qp)->wrid[wqe_index];
 	}
 
-	if (wq->last_comp < wqe_index)
-		wq->tail += wqe_index - wq->last_comp;
-	else
-		wq->tail += wqe_index + wq->max - wq->last_comp;
-
-	wq->last_comp = wqe_index;
+	if (wq) {
+		if (wq->last_comp < wqe_index)
+			wq->tail += wqe_index - wq->last_comp;
+		else
+			wq->tail += wqe_index + wq->max - wq->last_comp;
 
-	if (0)
-		mthca_dbg(dev, "%s completion for QP %06x, index %d (nr %d)\n",
-			  is_send ? "Send" : "Receive",
-			  (*cur_qp)->qpn, wqe_index, wq->max);
+		wq->last_comp = wqe_index;
+	}
 
 	if (is_error) {
 		err = handle_error_cqe(dev, cq, *cur_qp, wqe_index, is_send,
@@ -584,13 +597,13 @@ int mthca_poll_cq(struct ib_cq *ibcq, int num_entries,
 
 int mthca_tavor_arm_cq(struct ib_cq *cq, enum ib_cq_notify notify)
 {
-	u32 doorbell[2];
+	__be32 doorbell[2];
 
 	doorbell[0] = cpu_to_be32((notify == IB_CQ_SOLICITED ?
 				   MTHCA_TAVOR_CQ_DB_REQ_NOT_SOL :
 				   MTHCA_TAVOR_CQ_DB_REQ_NOT)      |
 				  to_mcq(cq)->cqn);
-	doorbell[1] = 0xffffffff;
+	doorbell[1] = (__force __be32) 0xffffffff;
 
 	mthca_write64(doorbell,
 		      to_mdev(cq->device)->kar + MTHCA_CQ_DOORBELL,
@@ -602,9 +615,9 @@ int mthca_tavor_arm_cq(struct ib_cq *cq, enum ib_cq_notify notify)
 int mthca_arbel_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify notify)
 {
 	struct mthca_cq *cq = to_mcq(ibcq);
-	u32 doorbell[2];
+	__be32 doorbell[2];
 	u32 sn;
-	u32 ci;
+	__be32 ci;
 
 	sn = cq->arm_sn & 3;
 	ci = cpu_to_be32(cq->cons_index);
@@ -637,113 +650,8 @@ int mthca_arbel_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify notify)
 
 static void mthca_free_cq_buf(struct mthca_dev *dev, struct mthca_cq *cq)
 {
-	int i;
-	int size;
-
-	if (cq->is_direct)
-		dma_free_coherent(&dev->pdev->dev,
-				  (cq->ibcq.cqe + 1) * MTHCA_CQ_ENTRY_SIZE,
-				  cq->queue.direct.buf,
-				  pci_unmap_addr(&cq->queue.direct,
-						 mapping));
-	else {
-		size = (cq->ibcq.cqe + 1) * MTHCA_CQ_ENTRY_SIZE;
-		for (i = 0; i < (size + PAGE_SIZE - 1) / PAGE_SIZE; ++i)
-			if (cq->queue.page_list[i].buf)
-				dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
-						  cq->queue.page_list[i].buf,
-						  pci_unmap_addr(&cq->queue.page_list[i],
-								 mapping));
-
-		kfree(cq->queue.page_list);
-	}
-}
-
-static int mthca_alloc_cq_buf(struct mthca_dev *dev, int size,
-			      struct mthca_cq *cq)
-{
-	int err = -ENOMEM;
-	int npages, shift;
-	u64 *dma_list = NULL;
-	dma_addr_t t;
-	int i;
-
-	if (size <= MTHCA_MAX_DIRECT_CQ_SIZE) {
-		cq->is_direct = 1;
-		npages        = 1;
-		shift         = get_order(size) + PAGE_SHIFT;
-
-		cq->queue.direct.buf = dma_alloc_coherent(&dev->pdev->dev,
-							  size, &t, GFP_KERNEL);
-		if (!cq->queue.direct.buf)
-			return -ENOMEM;
-
-		pci_unmap_addr_set(&cq->queue.direct, mapping, t);
-
-		memset(cq->queue.direct.buf, 0, size);
-
-		while (t & ((1 << shift) - 1)) {
-			--shift;
-			npages *= 2;
-		}
-
-		dma_list = kmalloc(npages * sizeof *dma_list, GFP_KERNEL);
-		if (!dma_list)
-			goto err_free;
-
-		for (i = 0; i < npages; ++i)
-			dma_list[i] = t + i * (1 << shift);
-	} else {
-		cq->is_direct = 0;
-		npages        = (size + PAGE_SIZE - 1) / PAGE_SIZE;
-		shift         = PAGE_SHIFT;
-
-		dma_list = kmalloc(npages * sizeof *dma_list, GFP_KERNEL);
-		if (!dma_list)
-			return -ENOMEM;
-
-		cq->queue.page_list = kmalloc(npages * sizeof *cq->queue.page_list,
-					      GFP_KERNEL);
-		if (!cq->queue.page_list)
-			goto err_out;
-
-		for (i = 0; i < npages; ++i)
-			cq->queue.page_list[i].buf = NULL;
-
-		for (i = 0; i < npages; ++i) {
-			cq->queue.page_list[i].buf =
-				dma_alloc_coherent(&dev->pdev->dev, PAGE_SIZE,
-						   &t, GFP_KERNEL);
-			if (!cq->queue.page_list[i].buf)
-				goto err_free;
-
-			dma_list[i] = t;
-			pci_unmap_addr_set(&cq->queue.page_list[i], mapping, t);
-
-			memset(cq->queue.page_list[i].buf, 0, PAGE_SIZE);
-		}
-	}
-
-	err = mthca_mr_alloc_phys(dev, dev->driver_pd.pd_num,
-				  dma_list, shift, npages,
-				  0, size,
-				  MTHCA_MPT_FLAG_LOCAL_WRITE |
-				  MTHCA_MPT_FLAG_LOCAL_READ,
-				  &cq->mr);
-	if (err)
-		goto err_free;
-
-	kfree(dma_list);
-
-	return 0;
-
-err_free:
-	mthca_free_cq_buf(dev, cq);
-
-err_out:
-	kfree(dma_list);
-
-	return err;
+	mthca_buf_free(dev, (cq->ibcq.cqe + 1) * MTHCA_CQ_ENTRY_SIZE,
+		       &cq->queue, cq->is_direct, &cq->mr);
 }
 
 int mthca_init_cq(struct mthca_dev *dev, int nent,
@@ -795,7 +703,9 @@ int mthca_init_cq(struct mthca_dev *dev, int nent,
 	cq_context = mailbox->buf;
 
 	if (cq->is_kernel) {
-		err = mthca_alloc_cq_buf(dev, size, cq);
+		err = mthca_buf_alloc(dev, size, MTHCA_MAX_DIRECT_CQ_SIZE,
+				      &cq->queue, &cq->is_direct,
+				      &dev->driver_pd, 1, &cq->mr);
 		if (err)
 			goto err_out_mailbox;
 
@@ -811,7 +721,6 @@ int mthca_init_cq(struct mthca_dev *dev, int nent,
 	cq_context->flags           = cpu_to_be32(MTHCA_CQ_STATUS_OK      |
 						  MTHCA_CQ_STATE_DISARMED |
 						  MTHCA_CQ_FLAG_TR);
-	cq_context->start           = cpu_to_be64(0);
 	cq_context->logsize_usrpage = cpu_to_be32((ffs(nent) - 1) << 24);
 	if (ctx)
 		cq_context->logsize_usrpage |= cpu_to_be32(ctx->uar.index);
@@ -857,10 +766,8 @@ int mthca_init_cq(struct mthca_dev *dev, int nent,
 	return 0;
 
 err_out_free_mr:
-	if (cq->is_kernel) {
-		mthca_free_mr(dev, &cq->mr);
+	if (cq->is_kernel)
 		mthca_free_cq_buf(dev, cq);
-	}
 
 err_out_mailbox:
 	mthca_free_mailbox(dev, mailbox);
@@ -904,7 +811,7 @@ void mthca_free_cq(struct mthca_dev *dev,
 		mthca_warn(dev, "HW2SW_CQ returned status 0x%02x\n", status);
 
 	if (0) {
-		u32 *ctx = mailbox->buf;
+		__be32 *ctx = mailbox->buf;
 		int j;
 
 		printk(KERN_ERR "context for CQN %x (cons index %x, next sw %d)\n",
@@ -928,7 +835,6 @@ void mthca_free_cq(struct mthca_dev *dev,
 	wait_event(cq->wait, !atomic_read(&cq->refcount));
 
 	if (cq->is_kernel) {
-		mthca_free_mr(dev, &cq->mr);
 		mthca_free_cq_buf(dev, cq);
 		if (mthca_is_memfree(dev)) {
 			mthca_free_db(dev, MTHCA_DB_TYPE_CQ_ARM,    cq->arm_db_index);
diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h
index 5ecdd2eeeb0..7bff5a8425f 100644
--- a/drivers/infiniband/hw/mthca/mthca_dev.h
+++ b/drivers/infiniband/hw/mthca/mthca_dev.h
@@ -2,6 +2,8 @@
  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
  * Copyright (c) 2005 Cisco Systems.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -67,6 +69,10 @@ enum {
 };
 
 enum {
+	MTHCA_BOARD_ID_LEN = 64
+};
+
+enum {
 	MTHCA_EQ_CONTEXT_SIZE =  0x40,
 	MTHCA_CQ_CONTEXT_SIZE =  0x40,
 	MTHCA_QP_CONTEXT_SIZE = 0x200,
@@ -142,6 +148,7 @@ struct mthca_limits {
 	int      reserved_mcgs;
 	int      num_pds;
 	int      reserved_pds;
+	u8       port_width_cap;
 };
 
 struct mthca_alloc {
@@ -211,6 +218,13 @@ struct mthca_cq_table {
 	struct mthca_icm_table *table;
 };
 
+struct mthca_srq_table {
+	struct mthca_alloc 	alloc;
+	spinlock_t         	lock;
+	struct mthca_array      srq;
+	struct mthca_icm_table *table;
+};
+
 struct mthca_qp_table {
 	struct mthca_alloc     	alloc;
 	u32                    	rdb_base;
@@ -246,6 +260,7 @@ struct mthca_dev {
 	unsigned long    device_cap_flags;
 
 	u32              rev_id;
+	char             board_id[MTHCA_BOARD_ID_LEN];
 
 	/* firmware info */
 	u64              fw_ver;
@@ -291,6 +306,7 @@ struct mthca_dev {
 	struct mthca_mr_table  mr_table;
 	struct mthca_eq_table  eq_table;
 	struct mthca_cq_table  cq_table;
+	struct mthca_srq_table srq_table;
 	struct mthca_qp_table  qp_table;
 	struct mthca_av_table  av_table;
 	struct mthca_mcg_table mcg_table;
@@ -331,14 +347,13 @@ extern void __buggy_use_of_MTHCA_PUT(void);
 
 #define MTHCA_PUT(dest, source, offset)                               \
 	do {                                                          \
-		__typeof__(source) *__p =                             \
-			(__typeof__(source) *) ((char *) (dest) + (offset)); \
+		void *__d = ((char *) (dest) + (offset));	      \
 		switch (sizeof(source)) {                             \
-			case 1: *__p = (source);            break;    \
-			case 2: *__p = cpu_to_be16(source); break;    \
-			case 4: *__p = cpu_to_be32(source); break;    \
-			case 8: *__p = cpu_to_be64(source); break;    \
-			default: __buggy_use_of_MTHCA_PUT();          \
+		case 1: *(u8 *) __d = (source);                break; \
+		case 2:	*(__be16 *) __d = cpu_to_be16(source); break; \
+		case 4:	*(__be32 *) __d = cpu_to_be32(source); break; \
+		case 8:	*(__be64 *) __d = cpu_to_be64(source); break; \
+		default: __buggy_use_of_MTHCA_PUT();		      \
 		}                                                     \
 	} while (0)
 
@@ -354,12 +369,18 @@ int mthca_array_set(struct mthca_array *array, int index, void *value);
 void mthca_array_clear(struct mthca_array *array, int index);
 int mthca_array_init(struct mthca_array *array, int nent);
 void mthca_array_cleanup(struct mthca_array *array, int nent);
+int mthca_buf_alloc(struct mthca_dev *dev, int size, int max_direct,
+		    union mthca_buf *buf, int *is_direct, struct mthca_pd *pd,
+		    int hca_write, struct mthca_mr *mr);
+void mthca_buf_free(struct mthca_dev *dev, int size, union mthca_buf *buf,
+		    int is_direct, struct mthca_mr *mr);
 
 int mthca_init_uar_table(struct mthca_dev *dev);
 int mthca_init_pd_table(struct mthca_dev *dev);
 int mthca_init_mr_table(struct mthca_dev *dev);
 int mthca_init_eq_table(struct mthca_dev *dev);
 int mthca_init_cq_table(struct mthca_dev *dev);
+int mthca_init_srq_table(struct mthca_dev *dev);
 int mthca_init_qp_table(struct mthca_dev *dev);
 int mthca_init_av_table(struct mthca_dev *dev);
 int mthca_init_mcg_table(struct mthca_dev *dev);
@@ -369,6 +390,7 @@ void mthca_cleanup_pd_table(struct mthca_dev *dev);
 void mthca_cleanup_mr_table(struct mthca_dev *dev);
 void mthca_cleanup_eq_table(struct mthca_dev *dev);
 void mthca_cleanup_cq_table(struct mthca_dev *dev);
+void mthca_cleanup_srq_table(struct mthca_dev *dev);
 void mthca_cleanup_qp_table(struct mthca_dev *dev);
 void mthca_cleanup_av_table(struct mthca_dev *dev);
 void mthca_cleanup_mcg_table(struct mthca_dev *dev);
@@ -419,7 +441,19 @@ int mthca_init_cq(struct mthca_dev *dev, int nent,
 void mthca_free_cq(struct mthca_dev *dev,
 		   struct mthca_cq *cq);
 void mthca_cq_event(struct mthca_dev *dev, u32 cqn);
-void mthca_cq_clean(struct mthca_dev *dev, u32 cqn, u32 qpn);
+void mthca_cq_clean(struct mthca_dev *dev, u32 cqn, u32 qpn,
+		    struct mthca_srq *srq);
+
+int mthca_alloc_srq(struct mthca_dev *dev, struct mthca_pd *pd,
+		    struct ib_srq_attr *attr, struct mthca_srq *srq);
+void mthca_free_srq(struct mthca_dev *dev, struct mthca_srq *srq);
+void mthca_srq_event(struct mthca_dev *dev, u32 srqn,
+		     enum ib_event_type event_type);
+void mthca_free_srq_wqe(struct mthca_srq *srq, u32 wqe_addr);
+int mthca_tavor_post_srq_recv(struct ib_srq *srq, struct ib_recv_wr *wr,
+			      struct ib_recv_wr **bad_wr);
+int mthca_arbel_post_srq_recv(struct ib_srq *srq, struct ib_recv_wr *wr,
+			      struct ib_recv_wr **bad_wr);
 
 void mthca_qp_event(struct mthca_dev *dev, u32 qpn,
 		    enum ib_event_type event_type);
@@ -433,7 +467,7 @@ int mthca_arbel_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 int mthca_arbel_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 			     struct ib_recv_wr **bad_wr);
 int mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
-		       int index, int *dbd, u32 *new_wqe);
+		       int index, int *dbd, __be32 *new_wqe);
 int mthca_alloc_qp(struct mthca_dev *dev,
 		   struct mthca_pd *pd,
 		   struct mthca_cq *send_cq,
diff --git a/drivers/infiniband/hw/mthca/mthca_doorbell.h b/drivers/infiniband/hw/mthca/mthca_doorbell.h
index 535fad7710f..dd9a44d170c 100644
--- a/drivers/infiniband/hw/mthca/mthca_doorbell.h
+++ b/drivers/infiniband/hw/mthca/mthca_doorbell.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -57,13 +58,13 @@ static inline void mthca_write64_raw(__be64 val, void __iomem *dest)
 	__raw_writeq((__force u64) val, dest);
 }
 
-static inline void mthca_write64(u32 val[2], void __iomem *dest,
+static inline void mthca_write64(__be32 val[2], void __iomem *dest,
 				 spinlock_t *doorbell_lock)
 {
 	__raw_writeq(*(u64 *) val, dest);
 }
 
-static inline void mthca_write_db_rec(u32 val[2], u32 *db)
+static inline void mthca_write_db_rec(__be32 val[2], __be32 *db)
 {
 	*(u64 *) db = *(u64 *) val;
 }
@@ -86,18 +87,18 @@ static inline void mthca_write64_raw(__be64 val, void __iomem *dest)
 	__raw_writel(((__force u32 *) &val)[1], dest + 4);
 }
 
-static inline void mthca_write64(u32 val[2], void __iomem *dest,
+static inline void mthca_write64(__be32 val[2], void __iomem *dest,
 				 spinlock_t *doorbell_lock)
 {
 	unsigned long flags;
 
 	spin_lock_irqsave(doorbell_lock, flags);
-	__raw_writel(val[0], dest);
-	__raw_writel(val[1], dest + 4);
+	__raw_writel((__force u32) val[0], dest);
+	__raw_writel((__force u32) val[1], dest + 4);
 	spin_unlock_irqrestore(doorbell_lock, flags);
 }
 
-static inline void mthca_write_db_rec(u32 val[2], u32 *db)
+static inline void mthca_write_db_rec(__be32 val[2], __be32 *db)
 {
 	db[0] = val[0];
 	wmb();
diff --git a/drivers/infiniband/hw/mthca/mthca_eq.c b/drivers/infiniband/hw/mthca/mthca_eq.c
index cbcf2b4722e..18f0981eb0c 100644
--- a/drivers/infiniband/hw/mthca/mthca_eq.c
+++ b/drivers/infiniband/hw/mthca/mthca_eq.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -51,18 +52,18 @@ enum {
  * Must be packed because start is 64 bits but only aligned to 32 bits.
  */
 struct mthca_eq_context {
-	u32 flags;
-	u64 start;
-	u32 logsize_usrpage;
-	u32 tavor_pd;		/* reserved for Arbel */
-	u8  reserved1[3];
-	u8  intr;
-	u32 arbel_pd;		/* lost_count for Tavor */
-	u32 lkey;
-	u32 reserved2[2];
-	u32 consumer_index;
-	u32 producer_index;
-	u32 reserved3[4];
+	__be32 flags;
+	__be64 start;
+	__be32 logsize_usrpage;
+	__be32 tavor_pd;	/* reserved for Arbel */
+	u8     reserved1[3];
+	u8     intr;
+	__be32 arbel_pd;	/* lost_count for Tavor */
+	__be32 lkey;
+	u32    reserved2[2];
+	__be32 consumer_index;
+	__be32 producer_index;
+	u32    reserved3[4];
 } __attribute__((packed));
 
 #define MTHCA_EQ_STATUS_OK          ( 0 << 28)
@@ -127,28 +128,28 @@ struct mthca_eqe {
 	union {
 		u32 raw[6];
 		struct {
-			u32 cqn;
+			__be32 cqn;
 		} __attribute__((packed)) comp;
 		struct {
-			u16 reserved1;
-			u16 token;
-			u32 reserved2;
-			u8  reserved3[3];
-			u8  status;
-			u64 out_param;
+			u16    reserved1;
+			__be16 token;
+			u32    reserved2;
+			u8     reserved3[3];
+			u8     status;
+			__be64 out_param;
 		} __attribute__((packed)) cmd;
 		struct {
-			u32 qpn;
+			__be32 qpn;
 		} __attribute__((packed)) qp;
 		struct {
-			u32 cqn;
-			u32 reserved1;
-			u8  reserved2[3];
-			u8  syndrome;
+			__be32 cqn;
+			u32    reserved1;
+			u8     reserved2[3];
+			u8     syndrome;
 		} __attribute__((packed)) cq_err;
 		struct {
-			u32 reserved1[2];
-			u32 port;
+			u32    reserved1[2];
+			__be32 port;
 		} __attribute__((packed)) port_change;
 	} event;
 	u8 reserved3[3];
@@ -167,7 +168,7 @@ static inline u64 async_mask(struct mthca_dev *dev)
 
 static inline void tavor_set_eq_ci(struct mthca_dev *dev, struct mthca_eq *eq, u32 ci)
 {
-	u32 doorbell[2];
+	__be32 doorbell[2];
 
 	doorbell[0] = cpu_to_be32(MTHCA_EQ_DB_SET_CI | eq->eqn);
 	doorbell[1] = cpu_to_be32(ci & (eq->nent - 1));
@@ -190,8 +191,8 @@ static inline void arbel_set_eq_ci(struct mthca_dev *dev, struct mthca_eq *eq, u
 {
 	/* See comment in tavor_set_eq_ci() above. */
 	wmb();
-	__raw_writel(cpu_to_be32(ci), dev->eq_regs.arbel.eq_set_ci_base +
-		     eq->eqn * 8);
+	__raw_writel((__force u32) cpu_to_be32(ci),
+		     dev->eq_regs.arbel.eq_set_ci_base + eq->eqn * 8);
 	/* We still want ordering, just not swabbing, so add a barrier */
 	mb();
 }
@@ -206,7 +207,7 @@ static inline void set_eq_ci(struct mthca_dev *dev, struct mthca_eq *eq, u32 ci)
 
 static inline void tavor_eq_req_not(struct mthca_dev *dev, int eqn)
 {
-	u32 doorbell[2];
+	__be32 doorbell[2];
 
 	doorbell[0] = cpu_to_be32(MTHCA_EQ_DB_REQ_NOT | eqn);
 	doorbell[1] = 0;
@@ -224,7 +225,7 @@ static inline void arbel_eq_req_not(struct mthca_dev *dev, u32 eqn_mask)
 static inline void disarm_cq(struct mthca_dev *dev, int eqn, int cqn)
 {
 	if (!mthca_is_memfree(dev)) {
-		u32 doorbell[2];
+		__be32 doorbell[2];
 
 		doorbell[0] = cpu_to_be32(MTHCA_EQ_DB_DISARM_CQ | eqn);
 		doorbell[1] = cpu_to_be32(cqn);
diff --git a/drivers/infiniband/hw/mthca/mthca_mad.c b/drivers/infiniband/hw/mthca/mthca_mad.c
index 7df22364201..9804174f7f3 100644
--- a/drivers/infiniband/hw/mthca/mthca_mad.c
+++ b/drivers/infiniband/hw/mthca/mthca_mad.c
@@ -1,5 +1,7 @@
 /*
  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -32,9 +34,9 @@
  * $Id: mthca_mad.c 1349 2004-12-16 21:09:43Z roland $
  */
 
-#include <ib_verbs.h>
-#include <ib_mad.h>
-#include <ib_smi.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_mad.h>
+#include <rdma/ib_smi.h>
 
 #include "mthca_dev.h"
 #include "mthca_cmd.h"
@@ -192,7 +194,7 @@ int mthca_process_mad(struct ib_device *ibdev,
 {
 	int err;
 	u8 status;
-	u16 slid = in_wc ? in_wc->slid : IB_LID_PERMISSIVE;
+	u16 slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE);
 
 	/* Forward locally generated traps to the SM */
 	if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP &&
diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c
index 2ef916859e1..3241d6c9dc1 100644
--- a/drivers/infiniband/hw/mthca/mthca_main.c
+++ b/drivers/infiniband/hw/mthca/mthca_main.c
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -34,7 +35,6 @@
  */
 
 #include <linux/config.h>
-#include <linux/version.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/errno.h>
@@ -171,6 +171,7 @@ static int __devinit mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim
 	mdev->limits.reserved_mrws      = dev_lim->reserved_mrws;
 	mdev->limits.reserved_uars      = dev_lim->reserved_uars;
 	mdev->limits.reserved_pds       = dev_lim->reserved_pds;
+	mdev->limits.port_width_cap     = dev_lim->max_port_width;
 
 	/* IB_DEVICE_RESIZE_MAX_WR not supported by driver.
 	   May be doable since hardware supports it for SRQ.
@@ -212,7 +213,6 @@ static int __devinit mthca_init_tavor(struct mthca_dev *mdev)
 	struct mthca_dev_lim        dev_lim;
 	struct mthca_profile        profile;
 	struct mthca_init_hca_param init_hca;
-	struct mthca_adapter        adapter;
 
 	err = mthca_SYS_EN(mdev, &status);
 	if (err) {
@@ -253,6 +253,8 @@ static int __devinit mthca_init_tavor(struct mthca_dev *mdev)
 	profile = default_profile;
 	profile.num_uar   = dev_lim.uar_size / PAGE_SIZE;
 	profile.uarc_size = 0;
+	if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
+		profile.num_srq = dev_lim.max_srqs;
 
 	err = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
 	if (err < 0)
@@ -270,26 +272,8 @@ static int __devinit mthca_init_tavor(struct mthca_dev *mdev)
 		goto err_disable;
 	}
 
-	err = mthca_QUERY_ADAPTER(mdev, &adapter, &status);
-	if (err) {
-		mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n");
-		goto err_close;
-	}
-	if (status) {
-		mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, "
-			  "aborting.\n", status);
-		err = -EINVAL;
-		goto err_close;
-	}
-
-	mdev->eq_table.inta_pin = adapter.inta_pin;
-	mdev->rev_id            = adapter.revision_id;
-
 	return 0;
 
-err_close:
-	mthca_CLOSE_HCA(mdev, 0, &status);
-
 err_disable:
 	mthca_SYS_DIS(mdev, &status);
 
@@ -442,15 +426,29 @@ static int __devinit mthca_init_icm(struct mthca_dev *mdev,
 	}
 
        mdev->cq_table.table = mthca_alloc_icm_table(mdev, init_hca->cqc_base,
-						     dev_lim->cqc_entry_sz,
-						     mdev->limits.num_cqs,
-						     mdev->limits.reserved_cqs, 0);
+						    dev_lim->cqc_entry_sz,
+						    mdev->limits.num_cqs,
+						    mdev->limits.reserved_cqs, 0);
 	if (!mdev->cq_table.table) {
 		mthca_err(mdev, "Failed to map CQ context memory, aborting.\n");
 		err = -ENOMEM;
 		goto err_unmap_rdb;
 	}
 
+	if (mdev->mthca_flags & MTHCA_FLAG_SRQ) {
+		mdev->srq_table.table =
+			mthca_alloc_icm_table(mdev, init_hca->srqc_base,
+					      dev_lim->srq_entry_sz,
+					      mdev->limits.num_srqs,
+					      mdev->limits.reserved_srqs, 0);
+		if (!mdev->srq_table.table) {
+			mthca_err(mdev, "Failed to map SRQ context memory, "
+				  "aborting.\n");
+			err = -ENOMEM;
+			goto err_unmap_cq;
+		}
+	}
+
 	/*
 	 * It's not strictly required, but for simplicity just map the
 	 * whole multicast group table now.  The table isn't very big
@@ -466,11 +464,15 @@ static int __devinit mthca_init_icm(struct mthca_dev *mdev,
 	if (!mdev->mcg_table.table) {
 		mthca_err(mdev, "Failed to map MCG context memory, aborting.\n");
 		err = -ENOMEM;
-		goto err_unmap_cq;
+		goto err_unmap_srq;
 	}
 
 	return 0;
 
+err_unmap_srq:
+	if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
+		mthca_free_icm_table(mdev, mdev->srq_table.table);
+
 err_unmap_cq:
 	mthca_free_icm_table(mdev, mdev->cq_table.table);
 
@@ -506,7 +508,6 @@ static int __devinit mthca_init_arbel(struct mthca_dev *mdev)
 	struct mthca_dev_lim        dev_lim;
 	struct mthca_profile        profile;
 	struct mthca_init_hca_param init_hca;
-	struct mthca_adapter        adapter;
 	u64 icm_size;
 	u8 status;
 	int err;
@@ -551,6 +552,8 @@ static int __devinit mthca_init_arbel(struct mthca_dev *mdev)
 	profile = default_profile;
 	profile.num_uar  = dev_lim.uar_size / PAGE_SIZE;
 	profile.num_udav = 0;
+	if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
+		profile.num_srq = dev_lim.max_srqs;
 
 	icm_size = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
 	if ((int) icm_size < 0) {
@@ -574,24 +577,11 @@ static int __devinit mthca_init_arbel(struct mthca_dev *mdev)
 		goto err_free_icm;
 	}
 
-	err = mthca_QUERY_ADAPTER(mdev, &adapter, &status);
-	if (err) {
-		mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n");
-		goto err_free_icm;
-	}
-	if (status) {
-		mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, "
-			  "aborting.\n", status);
-		err = -EINVAL;
-		goto err_free_icm;
-	}
-
-	mdev->eq_table.inta_pin = adapter.inta_pin;
-	mdev->rev_id            = adapter.revision_id;
-
 	return 0;
 
 err_free_icm:
+	if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
+		mthca_free_icm_table(mdev, mdev->srq_table.table);
 	mthca_free_icm_table(mdev, mdev->cq_table.table);
 	mthca_free_icm_table(mdev, mdev->qp_table.rdb_table);
 	mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
@@ -614,12 +604,70 @@ err_disable:
 	return err;
 }
 
+static void mthca_close_hca(struct mthca_dev *mdev)
+{
+	u8 status;
+
+	mthca_CLOSE_HCA(mdev, 0, &status);
+
+	if (mthca_is_memfree(mdev)) {
+		if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
+			mthca_free_icm_table(mdev, mdev->srq_table.table);
+		mthca_free_icm_table(mdev, mdev->cq_table.table);
+		mthca_free_icm_table(mdev, mdev->qp_table.rdb_table);
+		mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
+		mthca_free_icm_table(mdev, mdev->qp_table.qp_table);
+		mthca_free_icm_table(mdev, mdev->mr_table.mpt_table);
+		mthca_free_icm_table(mdev, mdev->mr_table.mtt_table);
+		mthca_unmap_eq_icm(mdev);
+
+		mthca_UNMAP_ICM_AUX(mdev, &status);
+		mthca_free_icm(mdev, mdev->fw.arbel.aux_icm);
+
+		mthca_UNMAP_FA(mdev, &status);
+		mthca_free_icm(mdev, mdev->fw.arbel.fw_icm);
+
+		if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM))
+			mthca_DISABLE_LAM(mdev, &status);
+	} else
+		mthca_SYS_DIS(mdev, &status);
+}
+
 static int __devinit mthca_init_hca(struct mthca_dev *mdev)
 {
+	u8 status;
+	int err;
+	struct mthca_adapter adapter;
+
 	if (mthca_is_memfree(mdev))
-		return mthca_init_arbel(mdev);
+		err = mthca_init_arbel(mdev);
 	else
-		return mthca_init_tavor(mdev);
+		err = mthca_init_tavor(mdev);
+
+	if (err)
+		return err;
+
+	err = mthca_QUERY_ADAPTER(mdev, &adapter, &status);
+	if (err) {
+		mthca_err(mdev, "QUERY_ADAPTER command failed, aborting.\n");
+		goto err_close;
+	}
+	if (status) {
+		mthca_err(mdev, "QUERY_ADAPTER returned status 0x%02x, "
+			  "aborting.\n", status);
+		err = -EINVAL;
+		goto err_close;
+	}
+
+	mdev->eq_table.inta_pin = adapter.inta_pin;
+	mdev->rev_id            = adapter.revision_id;
+	memcpy(mdev->board_id, adapter.board_id, sizeof mdev->board_id);
+
+	return 0;
+
+err_close:
+	mthca_close_hca(mdev);
+	return err;
 }
 
 static int __devinit mthca_setup_hca(struct mthca_dev *dev)
@@ -709,11 +757,18 @@ static int __devinit mthca_setup_hca(struct mthca_dev *dev)
 		goto err_cmd_poll;
 	}
 
+	err = mthca_init_srq_table(dev);
+	if (err) {
+		mthca_err(dev, "Failed to initialize "
+			  "shared receive queue table, aborting.\n");
+		goto err_cq_table_free;
+	}
+
 	err = mthca_init_qp_table(dev);
 	if (err) {
 		mthca_err(dev, "Failed to initialize "
 			  "queue pair table, aborting.\n");
-		goto err_cq_table_free;
+		goto err_srq_table_free;
 	}
 
 	err = mthca_init_av_table(dev);
@@ -738,6 +793,9 @@ err_av_table_free:
 err_qp_table_free:
 	mthca_cleanup_qp_table(dev);
 
+err_srq_table_free:
+	mthca_cleanup_srq_table(dev);
+
 err_cq_table_free:
 	mthca_cleanup_cq_table(dev);
 
@@ -844,33 +902,6 @@ static int __devinit mthca_enable_msi_x(struct mthca_dev *mdev)
 	return 0;
 }
 
-static void mthca_close_hca(struct mthca_dev *mdev)
-{
-	u8 status;
-
-	mthca_CLOSE_HCA(mdev, 0, &status);
-
-	if (mthca_is_memfree(mdev)) {
-		mthca_free_icm_table(mdev, mdev->cq_table.table);
-		mthca_free_icm_table(mdev, mdev->qp_table.rdb_table);
-		mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
-		mthca_free_icm_table(mdev, mdev->qp_table.qp_table);
-		mthca_free_icm_table(mdev, mdev->mr_table.mpt_table);
-		mthca_free_icm_table(mdev, mdev->mr_table.mtt_table);
-		mthca_unmap_eq_icm(mdev);
-
-		mthca_UNMAP_ICM_AUX(mdev, &status);
-		mthca_free_icm(mdev, mdev->fw.arbel.aux_icm);
-
-		mthca_UNMAP_FA(mdev, &status);
-		mthca_free_icm(mdev, mdev->fw.arbel.fw_icm);
-
-		if (!(mdev->mthca_flags & MTHCA_FLAG_NO_LAM))
-			mthca_DISABLE_LAM(mdev, &status);
-	} else
-		mthca_SYS_DIS(mdev, &status);
-}
-
 /* Types of supported HCA */
 enum {
 	TAVOR,			/* MT23108                        */
@@ -887,9 +918,9 @@ static struct {
 	int is_memfree;
 	int is_pcie;
 } mthca_hca_table[] = {
-	[TAVOR]        = { .latest_fw = MTHCA_FW_VER(3, 3, 2), .is_memfree = 0, .is_pcie = 0 },
-	[ARBEL_COMPAT] = { .latest_fw = MTHCA_FW_VER(4, 6, 2), .is_memfree = 0, .is_pcie = 1 },
-	[ARBEL_NATIVE] = { .latest_fw = MTHCA_FW_VER(5, 0, 1), .is_memfree = 1, .is_pcie = 1 },
+	[TAVOR]        = { .latest_fw = MTHCA_FW_VER(3, 3, 3), .is_memfree = 0, .is_pcie = 0 },
+	[ARBEL_COMPAT] = { .latest_fw = MTHCA_FW_VER(4, 7, 0), .is_memfree = 0, .is_pcie = 1 },
+	[ARBEL_NATIVE] = { .latest_fw = MTHCA_FW_VER(5, 1, 0), .is_memfree = 1, .is_pcie = 1 },
 	[SINAI]        = { .latest_fw = MTHCA_FW_VER(1, 0, 1), .is_memfree = 1, .is_pcie = 1 }
 };
 
@@ -1051,6 +1082,7 @@ err_cleanup:
 	mthca_cleanup_mcg_table(mdev);
 	mthca_cleanup_av_table(mdev);
 	mthca_cleanup_qp_table(mdev);
+	mthca_cleanup_srq_table(mdev);
 	mthca_cleanup_cq_table(mdev);
 	mthca_cmd_use_polling(mdev);
 	mthca_cleanup_eq_table(mdev);
@@ -1100,6 +1132,7 @@ static void __devexit mthca_remove_one(struct pci_dev *pdev)
 		mthca_cleanup_mcg_table(mdev);
 		mthca_cleanup_av_table(mdev);
 		mthca_cleanup_qp_table(mdev);
+		mthca_cleanup_srq_table(mdev);
 		mthca_cleanup_cq_table(mdev);
 		mthca_cmd_use_polling(mdev);
 		mthca_cleanup_eq_table(mdev);
diff --git a/drivers/infiniband/hw/mthca/mthca_mcg.c b/drivers/infiniband/hw/mthca/mthca_mcg.c
index 5be7d949dbf..a2707605f4c 100644
--- a/drivers/infiniband/hw/mthca/mthca_mcg.c
+++ b/drivers/infiniband/hw/mthca/mthca_mcg.c
@@ -42,10 +42,10 @@ enum {
 };
 
 struct mthca_mgm {
-	u32 next_gid_index;
-	u32 reserved[3];
-	u8  gid[16];
-	u32 qp[MTHCA_QP_PER_MGM];
+	__be32 next_gid_index;
+	u32    reserved[3];
+	u8     gid[16];
+	__be32 qp[MTHCA_QP_PER_MGM];
 };
 
 static const u8 zero_gid[16];	/* automatically initialized to 0 */
@@ -94,10 +94,14 @@ static int find_mgm(struct mthca_dev *dev,
 	if (0)
 		mthca_dbg(dev, "Hash for %04x:%04x:%04x:%04x:"
 			  "%04x:%04x:%04x:%04x is %04x\n",
-			  be16_to_cpu(((u16 *) gid)[0]), be16_to_cpu(((u16 *) gid)[1]),
-			  be16_to_cpu(((u16 *) gid)[2]), be16_to_cpu(((u16 *) gid)[3]),
-			  be16_to_cpu(((u16 *) gid)[4]), be16_to_cpu(((u16 *) gid)[5]),
-			  be16_to_cpu(((u16 *) gid)[6]), be16_to_cpu(((u16 *) gid)[7]),
+			  be16_to_cpu(((__be16 *) gid)[0]),
+			  be16_to_cpu(((__be16 *) gid)[1]),
+			  be16_to_cpu(((__be16 *) gid)[2]),
+			  be16_to_cpu(((__be16 *) gid)[3]),
+			  be16_to_cpu(((__be16 *) gid)[4]),
+			  be16_to_cpu(((__be16 *) gid)[5]),
+			  be16_to_cpu(((__be16 *) gid)[6]),
+			  be16_to_cpu(((__be16 *) gid)[7]),
 			  *hash);
 
 	*index = *hash;
@@ -258,14 +262,14 @@ int mthca_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
 	if (index == -1) {
 		mthca_err(dev, "MGID %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x "
 			  "not found\n",
-			  be16_to_cpu(((u16 *) gid->raw)[0]),
-			  be16_to_cpu(((u16 *) gid->raw)[1]),
-			  be16_to_cpu(((u16 *) gid->raw)[2]),
-			  be16_to_cpu(((u16 *) gid->raw)[3]),
-			  be16_to_cpu(((u16 *) gid->raw)[4]),
-			  be16_to_cpu(((u16 *) gid->raw)[5]),
-			  be16_to_cpu(((u16 *) gid->raw)[6]),
-			  be16_to_cpu(((u16 *) gid->raw)[7]));
+			  be16_to_cpu(((__be16 *) gid->raw)[0]),
+			  be16_to_cpu(((__be16 *) gid->raw)[1]),
+			  be16_to_cpu(((__be16 *) gid->raw)[2]),
+			  be16_to_cpu(((__be16 *) gid->raw)[3]),
+			  be16_to_cpu(((__be16 *) gid->raw)[4]),
+			  be16_to_cpu(((__be16 *) gid->raw)[5]),
+			  be16_to_cpu(((__be16 *) gid->raw)[6]),
+			  be16_to_cpu(((__be16 *) gid->raw)[7]));
 		err = -EINVAL;
 		goto out;
 	}
diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.c b/drivers/infiniband/hw/mthca/mthca_memfree.c
index 2a864615035..1827400f189 100644
--- a/drivers/infiniband/hw/mthca/mthca_memfree.c
+++ b/drivers/infiniband/hw/mthca/mthca_memfree.c
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
  * Copyright (c) 2005 Cisco Systems.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -285,6 +286,7 @@ struct mthca_icm_table *mthca_alloc_icm_table(struct mthca_dev *dev,
 {
 	struct mthca_icm_table *table;
 	int num_icm;
+	unsigned chunk_size;
 	int i;
 	u8 status;
 
@@ -305,7 +307,11 @@ struct mthca_icm_table *mthca_alloc_icm_table(struct mthca_dev *dev,
 		table->icm[i] = NULL;
 
 	for (i = 0; i * MTHCA_TABLE_CHUNK_SIZE < reserved * obj_size; ++i) {
-		table->icm[i] = mthca_alloc_icm(dev, MTHCA_TABLE_CHUNK_SIZE >> PAGE_SHIFT,
+		chunk_size = MTHCA_TABLE_CHUNK_SIZE;
+		if ((i + 1) * MTHCA_TABLE_CHUNK_SIZE > nobj * obj_size)
+			chunk_size = nobj * obj_size - i * MTHCA_TABLE_CHUNK_SIZE;
+
+		table->icm[i] = mthca_alloc_icm(dev, chunk_size >> PAGE_SHIFT,
 						(use_lowmem ? GFP_KERNEL : GFP_HIGHUSER) |
 						__GFP_NOWARN);
 		if (!table->icm[i])
@@ -481,7 +487,7 @@ void mthca_cleanup_user_db_tab(struct mthca_dev *dev, struct mthca_uar *uar,
 	}
 }
 
-int mthca_alloc_db(struct mthca_dev *dev, int type, u32 qn, u32 **db)
+int mthca_alloc_db(struct mthca_dev *dev, int type, u32 qn, __be32 **db)
 {
 	int group;
 	int start, end, dir;
@@ -564,7 +570,7 @@ found:
 
 	page->db_rec[j] = cpu_to_be64((qn << 8) | (type << 5));
 
-	*db = (u32 *) &page->db_rec[j];
+	*db = (__be32 *) &page->db_rec[j];
 
 out:
 	up(&dev->db_tab->mutex);
diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.h b/drivers/infiniband/hw/mthca/mthca_memfree.h
index 4761d844cb5..bafa51544aa 100644
--- a/drivers/infiniband/hw/mthca/mthca_memfree.h
+++ b/drivers/infiniband/hw/mthca/mthca_memfree.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
  * Copyright (c) 2005 Cisco Systems.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -137,7 +138,7 @@ enum {
 
 struct mthca_db_page {
 	DECLARE_BITMAP(used, MTHCA_DB_REC_PER_PAGE);
-	u64       *db_rec;
+	__be64    *db_rec;
 	dma_addr_t mapping;
 };
 
@@ -172,7 +173,7 @@ void mthca_cleanup_user_db_tab(struct mthca_dev *dev, struct mthca_uar *uar,
 
 int mthca_init_db_tab(struct mthca_dev *dev);
 void mthca_cleanup_db_tab(struct mthca_dev *dev);
-int mthca_alloc_db(struct mthca_dev *dev, int type, u32 qn, u32 **db);
+int mthca_alloc_db(struct mthca_dev *dev, int type, u32 qn, __be32 **db);
 void mthca_free_db(struct mthca_dev *dev, int type, int db_index);
 
 #endif /* MTHCA_MEMFREE_H */
diff --git a/drivers/infiniband/hw/mthca/mthca_mr.c b/drivers/infiniband/hw/mthca/mthca_mr.c
index cbe50feaf68..1f97a44477f 100644
--- a/drivers/infiniband/hw/mthca/mthca_mr.c
+++ b/drivers/infiniband/hw/mthca/mthca_mr.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -50,18 +51,18 @@ struct mthca_mtt {
  * Must be packed because mtt_seg is 64 bits but only aligned to 32 bits.
  */
 struct mthca_mpt_entry {
-	u32 flags;
-	u32 page_size;
-	u32 key;
-	u32 pd;
-	u64 start;
-	u64 length;
-	u32 lkey;
-	u32 window_count;
-	u32 window_count_limit;
-	u64 mtt_seg;
-	u32 mtt_sz;		/* Arbel only */
-	u32 reserved[2];
+	__be32 flags;
+	__be32 page_size;
+	__be32 key;
+	__be32 pd;
+	__be64 start;
+	__be64 length;
+	__be32 lkey;
+	__be32 window_count;
+	__be32 window_count_limit;
+	__be64 mtt_seg;
+	__be32 mtt_sz;		/* Arbel only */
+	u32    reserved[2];
 } __attribute__((packed));
 
 #define MTHCA_MPT_FLAG_SW_OWNS       (0xfUL << 28)
@@ -247,7 +248,7 @@ int mthca_write_mtt(struct mthca_dev *dev, struct mthca_mtt *mtt,
 		    int start_index, u64 *buffer_list, int list_len)
 {
 	struct mthca_mailbox *mailbox;
-	u64 *mtt_entry;
+	__be64 *mtt_entry;
 	int err = 0;
 	u8 status;
 	int i;
@@ -389,7 +390,7 @@ int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift,
 		for (i = 0; i < sizeof (struct mthca_mpt_entry) / 4; ++i) {
 			if (i % 4 == 0)
 				printk("[%02x] ", i * 4);
-			printk(" %08x", be32_to_cpu(((u32 *) mpt_entry)[i]));
+			printk(" %08x", be32_to_cpu(((__be32 *) mpt_entry)[i]));
 			if ((i + 1) % 4 == 0)
 				printk("\n");
 		}
@@ -458,7 +459,7 @@ int mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd,
 static void mthca_free_region(struct mthca_dev *dev, u32 lkey)
 {
 	mthca_table_put(dev, dev->mr_table.mpt_table,
-			arbel_key_to_hw_index(lkey));
+			key_to_hw_index(dev, lkey));
 
 	mthca_free(&dev->mr_table.mpt_alloc, key_to_hw_index(dev, lkey));
 }
@@ -562,7 +563,7 @@ int mthca_fmr_alloc(struct mthca_dev *dev, u32 pd,
 		for (i = 0; i < sizeof (struct mthca_mpt_entry) / 4; ++i) {
 			if (i % 4 == 0)
 				printk("[%02x] ", i * 4);
-			printk(" %08x", be32_to_cpu(((u32 *) mpt_entry)[i]));
+			printk(" %08x", be32_to_cpu(((__be32 *) mpt_entry)[i]));
 			if ((i + 1) % 4 == 0)
 				printk("\n");
 		}
@@ -669,7 +670,7 @@ int mthca_tavor_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
 	mpt_entry.length = cpu_to_be64(list_len * (1ull << fmr->attr.page_size));
 	mpt_entry.start  = cpu_to_be64(iova);
 
-	writel(mpt_entry.lkey, &fmr->mem.tavor.mpt->key);
+	__raw_writel((__force u32) mpt_entry.lkey, &fmr->mem.tavor.mpt->key);
 	memcpy_toio(&fmr->mem.tavor.mpt->start, &mpt_entry.start,
 		    offsetof(struct mthca_mpt_entry, window_count) -
 		    offsetof(struct mthca_mpt_entry, start));
diff --git a/drivers/infiniband/hw/mthca/mthca_pd.c b/drivers/infiniband/hw/mthca/mthca_pd.c
index c2c899844e9..3dbf06a6e6f 100644
--- a/drivers/infiniband/hw/mthca/mthca_pd.c
+++ b/drivers/infiniband/hw/mthca/mthca_pd.c
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
  * Copyright (c) 2005 Cisco Systems.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
diff --git a/drivers/infiniband/hw/mthca/mthca_profile.c b/drivers/infiniband/hw/mthca/mthca_profile.c
index 4fedc32d587..0576056b34f 100644
--- a/drivers/infiniband/hw/mthca/mthca_profile.c
+++ b/drivers/infiniband/hw/mthca/mthca_profile.c
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -101,6 +102,7 @@ u64 mthca_make_profile(struct mthca_dev *dev,
 	profile[MTHCA_RES_UARC].size = request->uarc_size;
 
 	profile[MTHCA_RES_QP].num    = request->num_qp;
+	profile[MTHCA_RES_SRQ].num   = request->num_srq;
 	profile[MTHCA_RES_EQP].num   = request->num_qp;
 	profile[MTHCA_RES_RDB].num   = request->num_qp * request->rdb_per_qp;
 	profile[MTHCA_RES_CQ].num    = request->num_cq;
diff --git a/drivers/infiniband/hw/mthca/mthca_profile.h b/drivers/infiniband/hw/mthca/mthca_profile.h
index 17aef335766..94641808f97 100644
--- a/drivers/infiniband/hw/mthca/mthca_profile.h
+++ b/drivers/infiniband/hw/mthca/mthca_profile.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -41,6 +42,7 @@
 struct mthca_profile {
 	int num_qp;
 	int rdb_per_qp;
+	int num_srq;
 	int num_cq;
 	int num_mcg;
 	int num_mpt;
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
index 81919a7b493..1c1c2e23087 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -2,6 +2,8 @@
  * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
  * Copyright (c) 2005 Cisco Systems. All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -34,7 +36,7 @@
  * $Id: mthca_provider.c 1397 2004-12-28 05:09:00Z roland $
  */
 
-#include <ib_smi.h>
+#include <rdma/ib_smi.h>
 #include <linux/mm.h>
 
 #include "mthca_dev.h"
@@ -79,10 +81,10 @@ static int mthca_query_device(struct ib_device *ibdev,
 	}
 
 	props->device_cap_flags    = mdev->device_cap_flags;
-	props->vendor_id           = be32_to_cpup((u32 *) (out_mad->data + 36)) &
+	props->vendor_id           = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
 		0xffffff;
-	props->vendor_part_id      = be16_to_cpup((u16 *) (out_mad->data + 30));
-	props->hw_ver              = be16_to_cpup((u16 *) (out_mad->data + 32));
+	props->vendor_part_id      = be16_to_cpup((__be16 *) (out_mad->data + 30));
+	props->hw_ver              = be16_to_cpup((__be16 *) (out_mad->data + 32));
 	memcpy(&props->sys_image_guid, out_mad->data +  4, 8);
 	memcpy(&props->node_guid,      out_mad->data + 12, 8);
 
@@ -118,6 +120,8 @@ static int mthca_query_port(struct ib_device *ibdev,
 	if (!in_mad || !out_mad)
 		goto out;
 
+	memset(props, 0, sizeof *props);
+
 	memset(in_mad, 0, sizeof *in_mad);
 	in_mad->base_version       = 1;
 	in_mad->mgmt_class     	   = IB_MGMT_CLASS_SUBN_LID_ROUTED;
@@ -136,16 +140,17 @@ static int mthca_query_port(struct ib_device *ibdev,
 		goto out;
 	}
 
-	props->lid               = be16_to_cpup((u16 *) (out_mad->data + 16));
+	props->lid               = be16_to_cpup((__be16 *) (out_mad->data + 16));
 	props->lmc               = out_mad->data[34] & 0x7;
-	props->sm_lid            = be16_to_cpup((u16 *) (out_mad->data + 18));
+	props->sm_lid            = be16_to_cpup((__be16 *) (out_mad->data + 18));
 	props->sm_sl             = out_mad->data[36] & 0xf;
 	props->state             = out_mad->data[32] & 0xf;
 	props->phys_state        = out_mad->data[33] >> 4;
-	props->port_cap_flags    = be32_to_cpup((u32 *) (out_mad->data + 20));
+	props->port_cap_flags    = be32_to_cpup((__be32 *) (out_mad->data + 20));
 	props->gid_tbl_len       = to_mdev(ibdev)->limits.gid_table_len;
+	props->max_msg_sz        = 0x80000000;
 	props->pkey_tbl_len      = to_mdev(ibdev)->limits.pkey_table_len;
-	props->qkey_viol_cntr    = be16_to_cpup((u16 *) (out_mad->data + 48));
+	props->qkey_viol_cntr    = be16_to_cpup((__be16 *) (out_mad->data + 48));
 	props->active_width      = out_mad->data[31] & 0xf;
 	props->active_speed      = out_mad->data[35] >> 4;
 
@@ -221,7 +226,7 @@ static int mthca_query_pkey(struct ib_device *ibdev,
 		goto out;
 	}
 
-	*pkey = be16_to_cpu(((u16 *) out_mad->data)[index % 32]);
+	*pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
 
  out:
 	kfree(in_mad);
@@ -420,6 +425,77 @@ static int mthca_ah_destroy(struct ib_ah *ah)
 	return 0;
 }
 
+static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
+				       struct ib_srq_init_attr *init_attr,
+				       struct ib_udata *udata)
+{
+	struct mthca_create_srq ucmd;
+	struct mthca_ucontext *context = NULL;
+	struct mthca_srq *srq;
+	int err;
+
+	srq = kmalloc(sizeof *srq, GFP_KERNEL);
+	if (!srq)
+		return ERR_PTR(-ENOMEM);
+
+	if (pd->uobject) {
+		context = to_mucontext(pd->uobject->context);
+
+		if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd))
+			return ERR_PTR(-EFAULT);
+
+		err = mthca_map_user_db(to_mdev(pd->device), &context->uar,
+					context->db_tab, ucmd.db_index,
+					ucmd.db_page);
+
+		if (err)
+			goto err_free;
+
+		srq->mr.ibmr.lkey = ucmd.lkey;
+		srq->db_index     = ucmd.db_index;
+	}
+
+	err = mthca_alloc_srq(to_mdev(pd->device), to_mpd(pd),
+			      &init_attr->attr, srq);
+
+	if (err && pd->uobject)
+		mthca_unmap_user_db(to_mdev(pd->device), &context->uar,
+				    context->db_tab, ucmd.db_index);
+
+	if (err)
+		goto err_free;
+
+	if (context && ib_copy_to_udata(udata, &srq->srqn, sizeof (__u32))) {
+		mthca_free_srq(to_mdev(pd->device), srq);
+		err = -EFAULT;
+		goto err_free;
+	}
+
+	return &srq->ibsrq;
+
+err_free:
+	kfree(srq);
+
+	return ERR_PTR(err);
+}
+
+static int mthca_destroy_srq(struct ib_srq *srq)
+{
+	struct mthca_ucontext *context;
+
+	if (srq->uobject) {
+		context = to_mucontext(srq->uobject->context);
+
+		mthca_unmap_user_db(to_mdev(srq->device), &context->uar,
+				    context->db_tab, to_msrq(srq)->db_index);
+	}
+
+	mthca_free_srq(to_mdev(srq->device), to_msrq(srq));
+	kfree(srq);
+
+	return 0;
+}
+
 static struct ib_qp *mthca_create_qp(struct ib_pd *pd,
 				     struct ib_qp_init_attr *init_attr,
 				     struct ib_udata *udata)
@@ -956,14 +1032,22 @@ static ssize_t show_hca(struct class_device *cdev, char *buf)
 	}
 }
 
+static ssize_t show_board(struct class_device *cdev, char *buf)
+{
+	struct mthca_dev *dev = container_of(cdev, struct mthca_dev, ib_dev.class_dev);
+	return sprintf(buf, "%.*s\n", MTHCA_BOARD_ID_LEN, dev->board_id);
+}
+
 static CLASS_DEVICE_ATTR(hw_rev,   S_IRUGO, show_rev,    NULL);
 static CLASS_DEVICE_ATTR(fw_ver,   S_IRUGO, show_fw_ver, NULL);
 static CLASS_DEVICE_ATTR(hca_type, S_IRUGO, show_hca,    NULL);
+static CLASS_DEVICE_ATTR(board_id, S_IRUGO, show_board,  NULL);
 
 static struct class_device_attribute *mthca_class_attributes[] = {
 	&class_device_attr_hw_rev,
 	&class_device_attr_fw_ver,
-	&class_device_attr_hca_type
+	&class_device_attr_hca_type,
+	&class_device_attr_board_id
 };
 
 int mthca_register_device(struct mthca_dev *dev)
@@ -990,6 +1074,17 @@ int mthca_register_device(struct mthca_dev *dev)
 	dev->ib_dev.dealloc_pd           = mthca_dealloc_pd;
 	dev->ib_dev.create_ah            = mthca_ah_create;
 	dev->ib_dev.destroy_ah           = mthca_ah_destroy;
+
+	if (dev->mthca_flags & MTHCA_FLAG_SRQ) {
+		dev->ib_dev.create_srq           = mthca_create_srq;
+		dev->ib_dev.destroy_srq          = mthca_destroy_srq;
+
+		if (mthca_is_memfree(dev))
+			dev->ib_dev.post_srq_recv = mthca_arbel_post_srq_recv;
+		else
+			dev->ib_dev.post_srq_recv = mthca_tavor_post_srq_recv;
+	}
+
 	dev->ib_dev.create_qp            = mthca_create_qp;
 	dev->ib_dev.modify_qp            = mthca_modify_qp;
 	dev->ib_dev.destroy_qp           = mthca_destroy_qp;
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.h b/drivers/infiniband/hw/mthca/mthca_provider.h
index 1d032791cc8..bcd4b01a339 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.h
+++ b/drivers/infiniband/hw/mthca/mthca_provider.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
  * Copyright (c) 2005 Cisco Systems.  All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -36,8 +37,8 @@
 #ifndef MTHCA_PROVIDER_H
 #define MTHCA_PROVIDER_H
 
-#include <ib_verbs.h>
-#include <ib_pack.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_pack.h>
 
 #define MTHCA_MPT_FLAG_ATOMIC        (1 << 14)
 #define MTHCA_MPT_FLAG_REMOTE_WRITE  (1 << 13)
@@ -50,6 +51,11 @@ struct mthca_buf_list {
 	DECLARE_PCI_UNMAP_ADDR(mapping)
 };
 
+union mthca_buf {
+	struct mthca_buf_list direct;
+	struct mthca_buf_list *page_list;
+};
+
 struct mthca_uar {
 	unsigned long pfn;
 	int           index;
@@ -181,19 +187,39 @@ struct mthca_cq {
 
 	/* Next fields are Arbel only */
 	int                    set_ci_db_index;
-	u32                   *set_ci_db;
+	__be32                *set_ci_db;
 	int                    arm_db_index;
-	u32                   *arm_db;
+	__be32                *arm_db;
 	int                    arm_sn;
 
-	union {
-		struct mthca_buf_list direct;
-		struct mthca_buf_list *page_list;
-	}                      queue;
+	union mthca_buf        queue;
 	struct mthca_mr        mr;
 	wait_queue_head_t      wait;
 };
 
+struct mthca_srq {
+	struct ib_srq		ibsrq;
+	spinlock_t		lock;
+	atomic_t		refcount;
+	int			srqn;
+	int			max;
+	int			max_gs;
+	int			wqe_shift;
+	int			first_free;
+	int			last_free;
+	u16			counter;  /* Arbel only */
+	int			db_index; /* Arbel only */
+	__be32		       *db;       /* Arbel only */
+	void		       *last;
+
+	int			is_direct;
+	u64		       *wrid;
+	union mthca_buf		queue;
+	struct mthca_mr		mr;
+
+	wait_queue_head_t	wait;
+};
+
 struct mthca_wq {
 	spinlock_t lock;
 	int        max;
@@ -206,7 +232,7 @@ struct mthca_wq {
 	int        wqe_shift;
 
 	int        db_index;	/* Arbel only */
-	u32       *db;
+	__be32    *db;
 };
 
 struct mthca_qp {
@@ -227,10 +253,7 @@ struct mthca_qp {
 	int                    send_wqe_offset;
 
 	u64                   *wrid;
-	union {
-		struct mthca_buf_list direct;
-		struct mthca_buf_list *page_list;
-	}                      queue;
+	union mthca_buf	       queue;
 
 	wait_queue_head_t      wait;
 };
@@ -277,6 +300,11 @@ static inline struct mthca_cq *to_mcq(struct ib_cq *ibcq)
 	return container_of(ibcq, struct mthca_cq, ibcq);
 }
 
+static inline struct mthca_srq *to_msrq(struct ib_srq *ibsrq)
+{
+	return container_of(ibsrq, struct mthca_srq, ibsrq);
+}
+
 static inline struct mthca_qp *to_mqp(struct ib_qp *ibqp)
 {
 	return container_of(ibqp, struct mthca_qp, ibqp);
diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
index f7126b14d5a..0164b84d4ec 100644
--- a/drivers/infiniband/hw/mthca/mthca_qp.c
+++ b/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -1,6 +1,8 @@
 /*
  * Copyright (c) 2004 Topspin Communications.  All rights reserved.
  * Copyright (c) 2005 Cisco Systems. All rights reserved.
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2004 Voltaire, Inc. All rights reserved. 
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -35,13 +37,14 @@
 
 #include <linux/init.h>
 
-#include <ib_verbs.h>
-#include <ib_cache.h>
-#include <ib_pack.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_cache.h>
+#include <rdma/ib_pack.h>
 
 #include "mthca_dev.h"
 #include "mthca_cmd.h"
 #include "mthca_memfree.h"
+#include "mthca_wqe.h"
 
 enum {
 	MTHCA_MAX_DIRECT_QP_SIZE = 4 * PAGE_SIZE,
@@ -95,62 +98,62 @@ enum {
 };
 
 struct mthca_qp_path {
-	u32 port_pkey;
-	u8  rnr_retry;
-	u8  g_mylmc;
-	u16 rlid;
-	u8  ackto;
-	u8  mgid_index;
-	u8  static_rate;
-	u8  hop_limit;
-	u32 sl_tclass_flowlabel;
-	u8  rgid[16];
+	__be32 port_pkey;
+	u8     rnr_retry;
+	u8     g_mylmc;
+	__be16 rlid;
+	u8     ackto;
+	u8     mgid_index;
+	u8     static_rate;
+	u8     hop_limit;
+	__be32 sl_tclass_flowlabel;
+	u8     rgid[16];
 } __attribute__((packed));
 
 struct mthca_qp_context {
-	u32 flags;
-	u32 tavor_sched_queue;	/* Reserved on Arbel */
-	u8  mtu_msgmax;
-	u8  rq_size_stride;	/* Reserved on Tavor */
-	u8  sq_size_stride;	/* Reserved on Tavor */
-	u8  rlkey_arbel_sched_queue;	/* Reserved on Tavor */
-	u32 usr_page;
-	u32 local_qpn;
-	u32 remote_qpn;
-	u32 reserved1[2];
+	__be32 flags;
+	__be32 tavor_sched_queue; /* Reserved on Arbel */
+	u8     mtu_msgmax;
+	u8     rq_size_stride;	/* Reserved on Tavor */
+	u8     sq_size_stride;	/* Reserved on Tavor */
+	u8     rlkey_arbel_sched_queue;	/* Reserved on Tavor */
+	__be32 usr_page;
+	__be32 local_qpn;
+	__be32 remote_qpn;
+	u32    reserved1[2];
 	struct mthca_qp_path pri_path;
 	struct mthca_qp_path alt_path;
-	u32 rdd;
-	u32 pd;
-	u32 wqe_base;
-	u32 wqe_lkey;
-	u32 params1;
-	u32 reserved2;
-	u32 next_send_psn;
-	u32 cqn_snd;
-	u32 snd_wqe_base_l;	/* Next send WQE on Tavor */
-	u32 snd_db_index;	/* (debugging only entries) */
-	u32 last_acked_psn;
-	u32 ssn;
-	u32 params2;
-	u32 rnr_nextrecvpsn;
-	u32 ra_buff_indx;
-	u32 cqn_rcv;
-	u32 rcv_wqe_base_l;	/* Next recv WQE on Tavor */
-	u32 rcv_db_index;	/* (debugging only entries) */
-	u32 qkey;
-	u32 srqn;
-	u32 rmsn;
-	u16 rq_wqe_counter;	/* reserved on Tavor */
-	u16 sq_wqe_counter;	/* reserved on Tavor */
-	u32 reserved3[18];
+	__be32 rdd;
+	__be32 pd;
+	__be32 wqe_base;
+	__be32 wqe_lkey;
+	__be32 params1;
+	__be32 reserved2;
+	__be32 next_send_psn;
+	__be32 cqn_snd;
+	__be32 snd_wqe_base_l;	/* Next send WQE on Tavor */
+	__be32 snd_db_index;	/* (debugging only entries) */
+	__be32 last_acked_psn;
+	__be32 ssn;
+	__be32 params2;
+	__be32 rnr_nextrecvpsn;
+	__be32 ra_buff_indx;
+	__be32 cqn_rcv;
+	__be32 rcv_wqe_base_l;	/* Next recv WQE on Tavor */
+	__be32 rcv_db_index;	/* (debugging only entries) */
+	__be32 qkey;
+	__be32 srqn;
+	__be32 rmsn;
+	__be16 rq_wqe_counter;	/* reserved on Tavor */
+	__be16 sq_wqe_counter;	/* reserved on Tavor */
+	u32    reserved3[18];
 } __attribute__((packed));
 
 struct mthca_qp_param {
-	u32 opt_param_mask;
-	u32 reserved1;
+	__be32 opt_param_mask;
+	u32    reserved1;
 	struct mthca_qp_context context;
-	u32 reserved2[62];
+	u32    reserved2[62];
 } __attribute__((packed));
 
 enum {
@@ -173,80 +176,6 @@ enum {
 	MTHCA_QP_OPTPAR_SCHED_QUEUE       = 1 << 16
 };
 
-enum {
-	MTHCA_NEXT_DBD       = 1 << 7,
-	MTHCA_NEXT_FENCE     = 1 << 6,
-	MTHCA_NEXT_CQ_UPDATE = 1 << 3,
-	MTHCA_NEXT_EVENT_GEN = 1 << 2,
-	MTHCA_NEXT_SOLICIT   = 1 << 1,
-
-	MTHCA_MLX_VL15       = 1 << 17,
-	MTHCA_MLX_SLR        = 1 << 16
-};
-
-enum {
-	MTHCA_INVAL_LKEY = 0x100
-};
-
-struct mthca_next_seg {
-	u32 nda_op;		/* [31:6] next WQE [4:0] next opcode */
-	u32 ee_nds;		/* [31:8] next EE  [7] DBD [6] F [5:0] next WQE size */
-	u32 flags;		/* [3] CQ [2] Event [1] Solicit */
-	u32 imm;		/* immediate data */
-};
-
-struct mthca_tavor_ud_seg {
-	u32 reserved1;
-	u32 lkey;
-	u64 av_addr;
-	u32 reserved2[4];
-	u32 dqpn;
-	u32 qkey;
-	u32 reserved3[2];
-};
-
-struct mthca_arbel_ud_seg {
-	u32 av[8];
-	u32 dqpn;
-	u32 qkey;
-	u32 reserved[2];
-};
-
-struct mthca_bind_seg {
-	u32 flags;		/* [31] Atomic [30] rem write [29] rem read */
-	u32 reserved;
-	u32 new_rkey;
-	u32 lkey;
-	u64 addr;
-	u64 length;
-};
-
-struct mthca_raddr_seg {
-	u64 raddr;
-	u32 rkey;
-	u32 reserved;
-};
-
-struct mthca_atomic_seg {
-	u64 swap_add;
-	u64 compare;
-};
-
-struct mthca_data_seg {
-	u32 byte_count;
-	u32 lkey;
-	u64 addr;
-};
-
-struct mthca_mlx_seg {
-	u32 nda_op;
-	u32 nds;
-	u32 flags;		/* [17] VL15 [16] SLR [14:12] static rate
-				   [11:8] SL [3] C [2] E */
-	u16 rlid;
-	u16 vcrc;
-};
-
 static const u8 mthca_opcode[] = {
 	[IB_WR_SEND]                 = MTHCA_OPCODE_SEND,
 	[IB_WR_SEND_WITH_IMM]        = MTHCA_OPCODE_SEND_IMM,
@@ -573,12 +502,11 @@ static void init_port(struct mthca_dev *dev, int port)
 
 	memset(&param, 0, sizeof param);
 
-	param.enable_1x = 1;
-	param.enable_4x = 1;
-	param.vl_cap    = dev->limits.vl_cap;
-	param.mtu_cap   = dev->limits.mtu_cap;
-	param.gid_cap   = dev->limits.gid_table_len;
-	param.pkey_cap  = dev->limits.pkey_table_len;
+	param.port_width = dev->limits.port_width_cap;
+	param.vl_cap     = dev->limits.vl_cap;
+	param.mtu_cap    = dev->limits.mtu_cap;
+	param.gid_cap    = dev->limits.gid_table_len;
+	param.pkey_cap   = dev->limits.pkey_table_len;
 
 	err = mthca_INIT_IB(dev, &param, port, &status);
 	if (err)
@@ -684,10 +612,13 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
 		qp_context->mtu_msgmax = (attr->path_mtu << 5) | 31;
 
 	if (mthca_is_memfree(dev)) {
-		qp_context->rq_size_stride =
-			((ffs(qp->rq.max) - 1) << 3) | (qp->rq.wqe_shift - 4);
-		qp_context->sq_size_stride =
-			((ffs(qp->sq.max) - 1) << 3) | (qp->sq.wqe_shift - 4);
+		if (qp->rq.max)
+			qp_context->rq_size_stride = long_log2(qp->rq.max) << 3;
+		qp_context->rq_size_stride |= qp->rq.wqe_shift - 4;
+
+		if (qp->sq.max)
+			qp_context->sq_size_stride = long_log2(qp->sq.max) << 3;
+		qp_context->sq_size_stride |= qp->sq.wqe_shift - 4;
 	}
 
 	/* leave arbel_sched_queue as 0 */
@@ -856,6 +787,9 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
 
 	qp_context->params2 |= cpu_to_be32(MTHCA_QP_BIT_RSC);
 
+	if (ibqp->srq)
+		qp_context->params2 |= cpu_to_be32(MTHCA_QP_BIT_RIC);
+
 	if (attr_mask & IB_QP_MIN_RNR_TIMER) {
 		qp_context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24);
 		qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_RNR_TIMEOUT);
@@ -878,6 +812,10 @@ int mthca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask)
 		qp_param->opt_param_mask |= cpu_to_be32(MTHCA_QP_OPTPAR_Q_KEY);
 	}
 
+	if (ibqp->srq)
+		qp_context->srqn = cpu_to_be32(1 << 24 |
+					       to_msrq(ibqp->srq)->srqn);
+
 	err = mthca_MODIFY_QP(dev, state_table[cur_state][new_state].trans,
 			      qp->qpn, 0, mailbox, 0, &status);
 	if (status) {
@@ -925,10 +863,6 @@ static int mthca_alloc_wqe_buf(struct mthca_dev *dev,
 			       struct mthca_qp *qp)
 {
 	int size;
-	int i;
-	int npages, shift;
-	dma_addr_t t;
-	u64 *dma_list = NULL;
 	int err = -ENOMEM;
 
 	size = sizeof (struct mthca_next_seg) +
@@ -978,116 +912,24 @@ static int mthca_alloc_wqe_buf(struct mthca_dev *dev,
 	if (!qp->wrid)
 		goto err_out;
 
-	if (size <= MTHCA_MAX_DIRECT_QP_SIZE) {
-		qp->is_direct = 1;
-		npages = 1;
-		shift = get_order(size) + PAGE_SHIFT;
-
-		if (0)
-			mthca_dbg(dev, "Creating direct QP of size %d (shift %d)\n",
-				  size, shift);
-
-		qp->queue.direct.buf = dma_alloc_coherent(&dev->pdev->dev, size,
-							  &t, GFP_KERNEL);
-		if (!qp->queue.direct.buf)
-			goto err_out;
-
-		pci_unmap_addr_set(&qp->queue.direct, mapping, t);
-
-		memset(qp->queue.direct.buf, 0, size);
-
-		while (t & ((1 << shift) - 1)) {
-			--shift;
-			npages *= 2;
-		}
-
-		dma_list = kmalloc(npages * sizeof *dma_list, GFP_KERNEL);
-		if (!dma_list)
-			goto err_out_free;
-
-		for (i = 0; i < npages; ++i)
-			dma_list[i] = t + i * (1 << shift);
-	} else {
-		qp->is_direct = 0;
-		npages = size / PAGE_SIZE;
-		shift = PAGE_SHIFT;
-
-		if (0)
-			mthca_dbg(dev, "Creating indirect QP with %d pages\n", npages);
-
-		dma_list = kmalloc(npages * sizeof *dma_list, GFP_KERNEL);
-		if (!dma_list)
-			goto err_out;
-
-		qp->queue.page_list = kmalloc(npages *
-					      sizeof *qp->queue.page_list,
-					      GFP_KERNEL);
-		if (!qp->queue.page_list)
-			goto err_out;
-
-		for (i = 0; i < npages; ++i) {
-			qp->queue.page_list[i].buf =
-				dma_alloc_coherent(&dev->pdev->dev, PAGE_SIZE,
-						   &t, GFP_KERNEL);
-			if (!qp->queue.page_list[i].buf)
-				goto err_out_free;
-
-			memset(qp->queue.page_list[i].buf, 0, PAGE_SIZE);
-
-			pci_unmap_addr_set(&qp->queue.page_list[i], mapping, t);
-			dma_list[i] = t;
-		}
-	}
-
-	err = mthca_mr_alloc_phys(dev, pd->pd_num, dma_list, shift,
-				  npages, 0, size,
-				  MTHCA_MPT_FLAG_LOCAL_READ,
-				  &qp->mr);
+	err = mthca_buf_alloc(dev, size, MTHCA_MAX_DIRECT_QP_SIZE,
+			      &qp->queue, &qp->is_direct, pd, 0, &qp->mr);
 	if (err)
-		goto err_out_free;
+		goto err_out;
 
-	kfree(dma_list);
 	return 0;
 
- err_out_free:
-	if (qp->is_direct) {
-		dma_free_coherent(&dev->pdev->dev, size, qp->queue.direct.buf,
-				  pci_unmap_addr(&qp->queue.direct, mapping));
-	} else
-		for (i = 0; i < npages; ++i) {
-			if (qp->queue.page_list[i].buf)
-				dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
-						  qp->queue.page_list[i].buf,
-						  pci_unmap_addr(&qp->queue.page_list[i],
-								 mapping));
-
-		}
-
- err_out:
+err_out:
 	kfree(qp->wrid);
-	kfree(dma_list);
 	return err;
 }
 
 static void mthca_free_wqe_buf(struct mthca_dev *dev,
 			       struct mthca_qp *qp)
 {
-	int i;
-	int size = PAGE_ALIGN(qp->send_wqe_offset +
-			      (qp->sq.max << qp->sq.wqe_shift));
-
-	if (qp->is_direct) {
-		dma_free_coherent(&dev->pdev->dev, size, qp->queue.direct.buf,
-				  pci_unmap_addr(&qp->queue.direct, mapping));
-	} else {
-		for (i = 0; i < size / PAGE_SIZE; ++i) {
-			dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
-					  qp->queue.page_list[i].buf,
-					  pci_unmap_addr(&qp->queue.page_list[i],
-							 mapping));
-		}
-	}
-
+	mthca_buf_free(dev, PAGE_ALIGN(qp->send_wqe_offset +
+				       (qp->sq.max << qp->sq.wqe_shift)),
+		       &qp->queue, qp->is_direct, &qp->mr);
 	kfree(qp->wrid);
 }
 
@@ -1428,11 +1270,12 @@ void mthca_free_qp(struct mthca_dev *dev,
 	 * unref the mem-free tables and free the QPN in our table.
 	 */
 	if (!qp->ibqp.uobject) {
-		mthca_cq_clean(dev, to_mcq(qp->ibqp.send_cq)->cqn, qp->qpn);
+		mthca_cq_clean(dev, to_mcq(qp->ibqp.send_cq)->cqn, qp->qpn,
+			       qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
 		if (qp->ibqp.send_cq != qp->ibqp.recv_cq)
-			mthca_cq_clean(dev, to_mcq(qp->ibqp.recv_cq)->cqn, qp->qpn);
+			mthca_cq_clean(dev, to_mcq(qp->ibqp.recv_cq)->cqn, qp->qpn,
+				       qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
 
-		mthca_free_mr(dev, &qp->mr);
 		mthca_free_memfree(dev, qp);
 		mthca_free_wqe_buf(dev, qp);
 	}
@@ -1457,6 +1300,7 @@ static int build_mlx_header(struct mthca_dev *dev, struct mthca_sqp *sqp,
 {
 	int header_size;
 	int err;
+	u16 pkey;
 
 	ib_ud_header_init(256, /* assume a MAD */
 			  sqp->ud_header.grh_present,
@@ -1467,8 +1311,8 @@ static int build_mlx_header(struct mthca_dev *dev, struct mthca_sqp *sqp,
 		return err;
 	mlx->flags &= ~cpu_to_be32(MTHCA_NEXT_SOLICIT | 1);
 	mlx->flags |= cpu_to_be32((!sqp->qp.ibqp.qp_num ? MTHCA_MLX_VL15 : 0) |
-				  (sqp->ud_header.lrh.destination_lid == 0xffff ?
-				   MTHCA_MLX_SLR : 0) |
+				  (sqp->ud_header.lrh.destination_lid ==
+				   IB_LID_PERMISSIVE ? MTHCA_MLX_SLR : 0) |
 				  (sqp->ud_header.lrh.service_level << 8));
 	mlx->rlid = sqp->ud_header.lrh.destination_lid;
 	mlx->vcrc = 0;
@@ -1488,18 +1332,16 @@ static int build_mlx_header(struct mthca_dev *dev, struct mthca_sqp *sqp,
 	}
 
 	sqp->ud_header.lrh.virtual_lane    = !sqp->qp.ibqp.qp_num ? 15 : 0;
-	if (sqp->ud_header.lrh.destination_lid == 0xffff)
-		sqp->ud_header.lrh.source_lid = 0xffff;
+	if (sqp->ud_header.lrh.destination_lid == IB_LID_PERMISSIVE)
+		sqp->ud_header.lrh.source_lid = IB_LID_PERMISSIVE;
 	sqp->ud_header.bth.solicited_event = !!(wr->send_flags & IB_SEND_SOLICITED);
 	if (!sqp->qp.ibqp.qp_num)
 		ib_get_cached_pkey(&dev->ib_dev, sqp->port,
-				   sqp->pkey_index,
-				   &sqp->ud_header.bth.pkey);
+				   sqp->pkey_index, &pkey);
 	else
 		ib_get_cached_pkey(&dev->ib_dev, sqp->port,
-				   wr->wr.ud.pkey_index,
-				   &sqp->ud_header.bth.pkey);
-	cpu_to_be16s(&sqp->ud_header.bth.pkey);
+				   wr->wr.ud.pkey_index, &pkey);
+	sqp->ud_header.bth.pkey = cpu_to_be16(pkey);
 	sqp->ud_header.bth.destination_qpn = cpu_to_be32(wr->wr.ud.remote_qpn);
 	sqp->ud_header.bth.psn = cpu_to_be32((sqp->send_psn++) & ((1 << 24) - 1));
 	sqp->ud_header.deth.qkey = cpu_to_be32(wr->wr.ud.remote_qkey & 0x80000000 ?
@@ -1742,7 +1584,7 @@ int mthca_tavor_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 
 out:
 	if (likely(nreq)) {
-		u32 doorbell[2];
+		__be32 doorbell[2];
 
 		doorbell[0] = cpu_to_be32(((qp->sq.next_ind << qp->sq.wqe_shift) +
 					   qp->send_wqe_offset) | f0 | op0);
@@ -1843,7 +1685,7 @@ int mthca_tavor_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 
 out:
 	if (likely(nreq)) {
-		u32 doorbell[2];
+		__be32 doorbell[2];
 
 		doorbell[0] = cpu_to_be32((qp->rq.next_ind << qp->rq.wqe_shift) | size0);
 		doorbell[1] = cpu_to_be32((qp->qpn << 8) | nreq);
@@ -2064,7 +1906,7 @@ int mthca_arbel_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 
 out:
 	if (likely(nreq)) {
-		u32 doorbell[2];
+		__be32 doorbell[2];
 
 		doorbell[0] = cpu_to_be32((nreq << 24)                  |
 					  ((qp->sq.head & 0xffff) << 8) |
@@ -2174,19 +2016,25 @@ out:
 }
 
 int mthca_free_err_wqe(struct mthca_dev *dev, struct mthca_qp *qp, int is_send,
-		       int index, int *dbd, u32 *new_wqe)
+		       int index, int *dbd, __be32 *new_wqe)
 {
 	struct mthca_next_seg *next;
 
+	/*
+	 * For SRQs, all WQEs generate a CQE, so we're always at the
+	 * end of the doorbell chain.
+	 */
+	if (qp->ibqp.srq) {
+		*new_wqe = 0;
+		return 0;
+	}
+
 	if (is_send)
 		next = get_send_wqe(qp, index);
 	else
 		next = get_recv_wqe(qp, index);
 
-	if (mthca_is_memfree(dev))
-		*dbd = 1;
-	else
-		*dbd = !!(next->ee_nds & cpu_to_be32(MTHCA_NEXT_DBD));
+	*dbd = !!(next->ee_nds & cpu_to_be32(MTHCA_NEXT_DBD));
 	if (next->ee_nds & cpu_to_be32(0x3f))
 		*new_wqe = (next->nda_op & cpu_to_be32(~0x3f)) |
 			(next->ee_nds & cpu_to_be32(0x3f));
diff --git a/drivers/infiniband/hw/mthca/mthca_srq.c b/drivers/infiniband/hw/mthca/mthca_srq.c
new file mode 100644
index 00000000000..75cd2d84ef1
--- /dev/null
+++ b/drivers/infiniband/hw/mthca/mthca_srq.c
@@ -0,0 +1,591 @@
+/*
+ * Copyright (c) 2005 Cisco Systems. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id: mthca_srq.c 3047 2005-08-10 03:59:35Z roland $
+ */
+
+#include "mthca_dev.h"
+#include "mthca_cmd.h"
+#include "mthca_memfree.h"
+#include "mthca_wqe.h"
+
+enum {
+	MTHCA_MAX_DIRECT_SRQ_SIZE = 4 * PAGE_SIZE
+};
+
+struct mthca_tavor_srq_context {
+	__be64 wqe_base_ds;	/* low 6 bits is descriptor size */
+	__be32 state_pd;
+	__be32 lkey;
+	__be32 uar;
+	__be32 wqe_cnt;
+	u32    reserved[2];
+};
+
+struct mthca_arbel_srq_context {
+	__be32 state_logsize_srqn;
+	__be32 lkey;
+	__be32 db_index;
+	__be32 logstride_usrpage;
+	__be64 wqe_base;
+	__be32 eq_pd;
+	__be16 limit_watermark;
+	__be16 wqe_cnt;
+	u16    reserved1;
+	__be16 wqe_counter;
+	u32    reserved2[3];
+};
+
+static void *get_wqe(struct mthca_srq *srq, int n)
+{
+	if (srq->is_direct)
+		return srq->queue.direct.buf + (n << srq->wqe_shift);
+	else
+		return srq->queue.page_list[(n << srq->wqe_shift) >> PAGE_SHIFT].buf +
+			((n << srq->wqe_shift) & (PAGE_SIZE - 1));
+}
+
+/*
+ * Return a pointer to the location within a WQE that we're using as a
+ * link when the WQE is in the free list.  We use an offset of 4
+ * because in the Tavor case, posting a WQE may overwrite the first
+ * four bytes of the previous WQE.  The offset avoids corrupting our
+ * free list if the WQE has already completed and been put on the free
+ * list when we post the next WQE.
+ */
+static inline int *wqe_to_link(void *wqe)
+{
+	return (int *) (wqe + 4);
+}
+
+static void mthca_tavor_init_srq_context(struct mthca_dev *dev,
+					 struct mthca_pd *pd,
+					 struct mthca_srq *srq,
+					 struct mthca_tavor_srq_context *context)
+{
+	memset(context, 0, sizeof *context);
+
+	context->wqe_base_ds = cpu_to_be64(1 << (srq->wqe_shift - 4));
+	context->state_pd    = cpu_to_be32(pd->pd_num);
+	context->lkey        = cpu_to_be32(srq->mr.ibmr.lkey);
+
+	if (pd->ibpd.uobject)
+		context->uar =
+			cpu_to_be32(to_mucontext(pd->ibpd.uobject->context)->uar.index);
+	else
+		context->uar = cpu_to_be32(dev->driver_uar.index);
+}
+
+static void mthca_arbel_init_srq_context(struct mthca_dev *dev,
+					 struct mthca_pd *pd,
+					 struct mthca_srq *srq,
+					 struct mthca_arbel_srq_context *context)
+{
+	int logsize;
+
+	memset(context, 0, sizeof *context);
+
+	logsize = long_log2(srq->max) + srq->wqe_shift;
+	context->state_logsize_srqn = cpu_to_be32(logsize << 24 | srq->srqn);
+	context->lkey = cpu_to_be32(srq->mr.ibmr.lkey);
+	context->db_index = cpu_to_be32(srq->db_index);
+	context->logstride_usrpage = cpu_to_be32((srq->wqe_shift - 4) << 29);
+	if (pd->ibpd.uobject)
+		context->logstride_usrpage |=
+			cpu_to_be32(to_mucontext(pd->ibpd.uobject->context)->uar.index);
+	else
+		context->logstride_usrpage |= cpu_to_be32(dev->driver_uar.index);
+	context->eq_pd = cpu_to_be32(MTHCA_EQ_ASYNC << 24 | pd->pd_num);
+}
+
+static void mthca_free_srq_buf(struct mthca_dev *dev, struct mthca_srq *srq)
+{
+	mthca_buf_free(dev, srq->max << srq->wqe_shift, &srq->queue,
+		       srq->is_direct, &srq->mr);
+	kfree(srq->wrid);
+}
+
+static int mthca_alloc_srq_buf(struct mthca_dev *dev, struct mthca_pd *pd,
+			       struct mthca_srq *srq)
+{
+	struct mthca_data_seg *scatter;
+	void *wqe;
+	int err;
+	int i;
+
+	if (pd->ibpd.uobject)
+		return 0;
+
+	srq->wrid = kmalloc(srq->max * sizeof (u64), GFP_KERNEL);
+	if (!srq->wrid)
+		return -ENOMEM;
+
+	err = mthca_buf_alloc(dev, srq->max << srq->wqe_shift,
+			      MTHCA_MAX_DIRECT_SRQ_SIZE,
+			      &srq->queue, &srq->is_direct, pd, 1, &srq->mr);
+	if (err) {
+		kfree(srq->wrid);
+		return err;
+	}
+
+	/*
+	 * Now initialize the SRQ buffer so that all of the WQEs are
+	 * linked into the list of free WQEs.  In addition, set the
+	 * scatter list L_Keys to the sentry value of 0x100.
+	 */
+	for (i = 0; i < srq->max; ++i) {
+		wqe = get_wqe(srq, i);
+
+		*wqe_to_link(wqe) = i < srq->max - 1 ? i + 1 : -1;
+
+		for (scatter = wqe + sizeof (struct mthca_next_seg);
+		     (void *) scatter < wqe + (1 << srq->wqe_shift);
+		     ++scatter)
+			scatter->lkey = cpu_to_be32(MTHCA_INVAL_LKEY);
+	}
+
+	return 0;
+}
+
+int mthca_alloc_srq(struct mthca_dev *dev, struct mthca_pd *pd,
+		    struct ib_srq_attr *attr, struct mthca_srq *srq)
+{
+	struct mthca_mailbox *mailbox;
+	u8 status;
+	int ds;
+	int err;
+
+	/* Sanity check SRQ size before proceeding */
+	if (attr->max_wr > 16 << 20 || attr->max_sge > 64)
+		return -EINVAL;
+
+	srq->max      = attr->max_wr;
+	srq->max_gs   = attr->max_sge;
+	srq->last     = NULL;
+	srq->counter  = 0;
+
+	if (mthca_is_memfree(dev))
+		srq->max = roundup_pow_of_two(srq->max + 1);
+
+	ds = min(64UL,
+		 roundup_pow_of_two(sizeof (struct mthca_next_seg) +
+				    srq->max_gs * sizeof (struct mthca_data_seg)));
+	srq->wqe_shift = long_log2(ds);
+
+	srq->srqn = mthca_alloc(&dev->srq_table.alloc);
+	if (srq->srqn == -1)
+		return -ENOMEM;
+
+	if (mthca_is_memfree(dev)) {
+		err = mthca_table_get(dev, dev->srq_table.table, srq->srqn);
+		if (err)
+			goto err_out;
+
+		if (!pd->ibpd.uobject) {
+			srq->db_index = mthca_alloc_db(dev, MTHCA_DB_TYPE_SRQ,
+						       srq->srqn, &srq->db);
+			if (srq->db_index < 0) {
+				err = -ENOMEM;
+				goto err_out_icm;
+			}
+		}
+	}
+
+	mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
+	if (IS_ERR(mailbox)) {
+		err = PTR_ERR(mailbox);
+		goto err_out_db;
+	}
+
+	err = mthca_alloc_srq_buf(dev, pd, srq);
+	if (err)
+		goto err_out_mailbox;
+
+	spin_lock_init(&srq->lock);
+	atomic_set(&srq->refcount, 1);
+	init_waitqueue_head(&srq->wait);
+
+	if (mthca_is_memfree(dev))
+		mthca_arbel_init_srq_context(dev, pd, srq, mailbox->buf);
+	else
+		mthca_tavor_init_srq_context(dev, pd, srq, mailbox->buf);
+
+	err = mthca_SW2HW_SRQ(dev, mailbox, srq->srqn, &status);
+
+	if (err) {
+		mthca_warn(dev, "SW2HW_SRQ failed (%d)\n", err);
+		goto err_out_free_buf;
+	}
+	if (status) {
+		mthca_warn(dev, "SW2HW_SRQ returned status 0x%02x\n",
+			   status);
+		err = -EINVAL;
+		goto err_out_free_buf;
+	}
+
+	spin_lock_irq(&dev->srq_table.lock);
+	if (mthca_array_set(&dev->srq_table.srq,
+			    srq->srqn & (dev->limits.num_srqs - 1),
+			    srq)) {
+		spin_unlock_irq(&dev->srq_table.lock);
+		goto err_out_free_srq;
+	}
+	spin_unlock_irq(&dev->srq_table.lock);
+
+	mthca_free_mailbox(dev, mailbox);
+
+	srq->first_free = 0;
+	srq->last_free  = srq->max - 1;
+
+	return 0;
+
+err_out_free_srq:
+	err = mthca_HW2SW_SRQ(dev, mailbox, srq->srqn, &status);
+	if (err)
+		mthca_warn(dev, "HW2SW_SRQ failed (%d)\n", err);
+	else if (status)
+		mthca_warn(dev, "HW2SW_SRQ returned status 0x%02x\n", status);
+
+err_out_free_buf:
+	if (!pd->ibpd.uobject)
+		mthca_free_srq_buf(dev, srq);
+
+err_out_mailbox:
+	mthca_free_mailbox(dev, mailbox);
+
+err_out_db:
+	if (!pd->ibpd.uobject && mthca_is_memfree(dev))
+		mthca_free_db(dev, MTHCA_DB_TYPE_SRQ, srq->db_index);
+
+err_out_icm:
+	mthca_table_put(dev, dev->srq_table.table, srq->srqn);
+
+err_out:
+	mthca_free(&dev->srq_table.alloc, srq->srqn);
+
+	return err;
+}
+
+void mthca_free_srq(struct mthca_dev *dev, struct mthca_srq *srq)
+{
+	struct mthca_mailbox *mailbox;
+	int err;
+	u8 status;
+
+	mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
+	if (IS_ERR(mailbox)) {
+		mthca_warn(dev, "No memory for mailbox to free SRQ.\n");
+		return;
+	}
+
+	err = mthca_HW2SW_SRQ(dev, mailbox, srq->srqn, &status);
+	if (err)
+		mthca_warn(dev, "HW2SW_SRQ failed (%d)\n", err);
+	else if (status)
+		mthca_warn(dev, "HW2SW_SRQ returned status 0x%02x\n", status);
+
+	spin_lock_irq(&dev->srq_table.lock);
+	mthca_array_clear(&dev->srq_table.srq,
+			  srq->srqn & (dev->limits.num_srqs - 1));
+	spin_unlock_irq(&dev->srq_table.lock);
+
+	atomic_dec(&srq->refcount);
+	wait_event(srq->wait, !atomic_read(&srq->refcount));
+
+	if (!srq->ibsrq.uobject) {
+		mthca_free_srq_buf(dev, srq);
+		if (mthca_is_memfree(dev))
+			mthca_free_db(dev, MTHCA_DB_TYPE_SRQ, srq->db_index);
+	}
+
+	mthca_table_put(dev, dev->srq_table.table, srq->srqn);
+	mthca_free(&dev->srq_table.alloc, srq->srqn);
+	mthca_free_mailbox(dev, mailbox);
+}
+
+void mthca_srq_event(struct mthca_dev *dev, u32 srqn,
+		     enum ib_event_type event_type)
+{
+	struct mthca_srq *srq;
+	struct ib_event event;
+
+	spin_lock(&dev->srq_table.lock);
+	srq = mthca_array_get(&dev->srq_table.srq, srqn & (dev->limits.num_srqs - 1));
+	if (srq)
+		atomic_inc(&srq->refcount);
+	spin_unlock(&dev->srq_table.lock);
+
+	if (!srq) {
+		mthca_warn(dev, "Async event for bogus SRQ %08x\n", srqn);
+		return;
+	}
+
+	if (!srq->ibsrq.event_handler)
+		goto out;
+
+	event.device      = &dev->ib_dev;
+	event.event       = event_type;
+	event.element.srq  = &srq->ibsrq;
+	srq->ibsrq.event_handler(&event, srq->ibsrq.srq_context);
+
+out:
+	if (atomic_dec_and_test(&srq->refcount))
+		wake_up(&srq->wait);
+}
+
+/*
+ * This function must be called with IRQs disabled.
+ */
+void mthca_free_srq_wqe(struct mthca_srq *srq, u32 wqe_addr)
+{
+	int ind;
+
+	ind = wqe_addr >> srq->wqe_shift;
+
+	spin_lock(&srq->lock);
+
+	if (likely(srq->first_free >= 0))
+		*wqe_to_link(get_wqe(srq, srq->last_free)) = ind;
+	else
+		srq->first_free = ind;
+
+	*wqe_to_link(get_wqe(srq, ind)) = -1;
+	srq->last_free = ind;
+
+	spin_unlock(&srq->lock);
+}
+
+int mthca_tavor_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
+			      struct ib_recv_wr **bad_wr)
+{
+	struct mthca_dev *dev = to_mdev(ibsrq->device);
+	struct mthca_srq *srq = to_msrq(ibsrq);
+	unsigned long flags;
+	int err = 0;
+	int first_ind;
+	int ind;
+	int next_ind;
+	int nreq;
+	int i;
+	void *wqe;
+	void *prev_wqe;
+
+	spin_lock_irqsave(&srq->lock, flags);
+
+	first_ind = srq->first_free;
+
+	for (nreq = 0; wr; ++nreq, wr = wr->next) {
+		ind = srq->first_free;
+
+		if (ind < 0) {
+			mthca_err(dev, "SRQ %06x full\n", srq->srqn);
+			err = -ENOMEM;
+			*bad_wr = wr;
+			return nreq;
+		}
+
+		wqe       = get_wqe(srq, ind);
+		next_ind  = *wqe_to_link(wqe);
+		prev_wqe  = srq->last;
+		srq->last = wqe;
+
+		((struct mthca_next_seg *) wqe)->nda_op = 0;
+		((struct mthca_next_seg *) wqe)->ee_nds = 0;
+		/* flags field will always remain 0 */
+
+		wqe += sizeof (struct mthca_next_seg);
+
+		if (unlikely(wr->num_sge > srq->max_gs)) {
+			err = -EINVAL;
+			*bad_wr = wr;
+			srq->last = prev_wqe;
+			return nreq;
+		}
+
+		for (i = 0; i < wr->num_sge; ++i) {
+			((struct mthca_data_seg *) wqe)->byte_count =
+				cpu_to_be32(wr->sg_list[i].length);
+			((struct mthca_data_seg *) wqe)->lkey =
+				cpu_to_be32(wr->sg_list[i].lkey);
+			((struct mthca_data_seg *) wqe)->addr =
+				cpu_to_be64(wr->sg_list[i].addr);
+			wqe += sizeof (struct mthca_data_seg);
+		}
+
+		if (i < srq->max_gs) {
+			((struct mthca_data_seg *) wqe)->byte_count = 0;
+			((struct mthca_data_seg *) wqe)->lkey = cpu_to_be32(MTHCA_INVAL_LKEY);
+			((struct mthca_data_seg *) wqe)->addr = 0;
+		}
+
+		if (likely(prev_wqe)) {
+			((struct mthca_next_seg *) prev_wqe)->nda_op =
+				cpu_to_be32((ind << srq->wqe_shift) | 1);
+			wmb();
+			((struct mthca_next_seg *) prev_wqe)->ee_nds =
+				cpu_to_be32(MTHCA_NEXT_DBD);
+		}
+
+		srq->wrid[ind]  = wr->wr_id;
+		srq->first_free = next_ind;
+	}
+
+	return nreq;
+
+	if (likely(nreq)) {
+		__be32 doorbell[2];
+
+		doorbell[0] = cpu_to_be32(first_ind << srq->wqe_shift);
+		doorbell[1] = cpu_to_be32((srq->srqn << 8) | nreq);
+
+		/*
+		 * Make sure that descriptors are written before
+		 * doorbell is rung.
+		 */
+		wmb();
+
+		mthca_write64(doorbell,
+			      dev->kar + MTHCA_RECEIVE_DOORBELL,
+			      MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
+	}
+
+	spin_unlock_irqrestore(&srq->lock, flags);
+	return err;
+}
+
+int mthca_arbel_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
+			      struct ib_recv_wr **bad_wr)
+{
+	struct mthca_dev *dev = to_mdev(ibsrq->device);
+	struct mthca_srq *srq = to_msrq(ibsrq);
+	unsigned long flags;
+	int err = 0;
+	int ind;
+	int next_ind;
+	int nreq;
+	int i;
+	void *wqe;
+
+	spin_lock_irqsave(&srq->lock, flags);
+
+	for (nreq = 0; wr; ++nreq, wr = wr->next) {
+		ind = srq->first_free;
+
+		if (ind < 0) {
+			mthca_err(dev, "SRQ %06x full\n", srq->srqn);
+			err = -ENOMEM;
+			*bad_wr = wr;
+			return nreq;
+		}
+
+		wqe       = get_wqe(srq, ind);
+		next_ind  = *wqe_to_link(wqe);
+
+		((struct mthca_next_seg *) wqe)->nda_op =
+			cpu_to_be32((next_ind << srq->wqe_shift) | 1);
+		((struct mthca_next_seg *) wqe)->ee_nds = 0;
+		/* flags field will always remain 0 */
+
+		wqe += sizeof (struct mthca_next_seg);
+
+		if (unlikely(wr->num_sge > srq->max_gs)) {
+			err = -EINVAL;
+			*bad_wr = wr;
+			return nreq;
+		}
+
+		for (i = 0; i < wr->num_sge; ++i) {
+			((struct mthca_data_seg *) wqe)->byte_count =
+				cpu_to_be32(wr->sg_list[i].length);
+			((struct mthca_data_seg *) wqe)->lkey =
+				cpu_to_be32(wr->sg_list[i].lkey);
+			((struct mthca_data_seg *) wqe)->addr =
+				cpu_to_be64(wr->sg_list[i].addr);
+			wqe += sizeof (struct mthca_data_seg);
+		}
+
+		if (i < srq->max_gs) {
+			((struct mthca_data_seg *) wqe)->byte_count = 0;
+			((struct mthca_data_seg *) wqe)->lkey = cpu_to_be32(MTHCA_INVAL_LKEY);
+			((struct mthca_data_seg *) wqe)->addr = 0;
+		}
+
+		srq->wrid[ind]  = wr->wr_id;
+		srq->first_free = next_ind;
+	}
+
+	if (likely(nreq)) {
+		srq->counter += nreq;
+
+		/*
+		 * Make sure that descriptors are written before
+		 * we write doorbell record.
+		 */
+		wmb();
+		*srq->db = cpu_to_be32(srq->counter);
+	}
+
+	spin_unlock_irqrestore(&srq->lock, flags);
+	return err;
+}
+
+int __devinit mthca_init_srq_table(struct mthca_dev *dev)
+{
+	int err;
+
+	if (!(dev->mthca_flags & MTHCA_FLAG_SRQ))
+		return 0;
+
+	spin_lock_init(&dev->srq_table.lock);
+
+	err = mthca_alloc_init(&dev->srq_table.alloc,
+			       dev->limits.num_srqs,
+			       dev->limits.num_srqs - 1,
+			       dev->limits.reserved_srqs);
+	if (err)
+		return err;
+
+	err = mthca_array_init(&dev->srq_table.srq,
+			       dev->limits.num_srqs);
+	if (err)
+		mthca_alloc_cleanup(&dev->srq_table.alloc);
+
+	return err;
+}
+
+void __devexit mthca_cleanup_srq_table(struct mthca_dev *dev)
+{
+	if (!(dev->mthca_flags & MTHCA_FLAG_SRQ))
+		return;
+
+	mthca_array_cleanup(&dev->srq_table.srq, dev->limits.num_srqs);
+	mthca_alloc_cleanup(&dev->srq_table.alloc);
+}
diff --git a/drivers/infiniband/hw/mthca/mthca_user.h b/drivers/infiniband/hw/mthca/mthca_user.h
index 3024c1b4547..41613ec8a04 100644
--- a/drivers/infiniband/hw/mthca/mthca_user.h
+++ b/drivers/infiniband/hw/mthca/mthca_user.h
@@ -69,6 +69,17 @@ struct mthca_create_cq_resp {
 	__u32 reserved;
 };
 
+struct mthca_create_srq {
+	__u32 lkey;
+	__u32 db_index;
+	__u64 db_page;
+};
+
+struct mthca_create_srq_resp {
+	__u32 srqn;
+	__u32 reserved;
+};
+
 struct mthca_create_qp {
 	__u32 lkey;
 	__u32 reserved;
diff --git a/drivers/infiniband/hw/mthca/mthca_wqe.h b/drivers/infiniband/hw/mthca/mthca_wqe.h
new file mode 100644
index 00000000000..1f4c0ff28f7
--- /dev/null
+++ b/drivers/infiniband/hw/mthca/mthca_wqe.h
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2005 Cisco Systems. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id: mthca_wqe.h 3047 2005-08-10 03:59:35Z roland $
+ */
+
+#ifndef MTHCA_WQE_H
+#define MTHCA_WQE_H
+
+#include <linux/types.h>
+
+enum {
+	MTHCA_NEXT_DBD       = 1 << 7,
+	MTHCA_NEXT_FENCE     = 1 << 6,
+	MTHCA_NEXT_CQ_UPDATE = 1 << 3,
+	MTHCA_NEXT_EVENT_GEN = 1 << 2,
+	MTHCA_NEXT_SOLICIT   = 1 << 1,
+
+	MTHCA_MLX_VL15       = 1 << 17,
+	MTHCA_MLX_SLR        = 1 << 16
+};
+
+enum {
+	MTHCA_INVAL_LKEY = 0x100
+};
+
+struct mthca_next_seg {
+	__be32 nda_op;		/* [31:6] next WQE [4:0] next opcode */
+	__be32 ee_nds;		/* [31:8] next EE  [7] DBD [6] F [5:0] next WQE size */
+	__be32 flags;		/* [3] CQ [2] Event [1] Solicit */
+	__be32 imm;		/* immediate data */
+};
+
+struct mthca_tavor_ud_seg {
+	u32    reserved1;
+	__be32 lkey;
+	__be64 av_addr;
+	u32    reserved2[4];
+	__be32 dqpn;
+	__be32 qkey;
+	u32    reserved3[2];
+};
+
+struct mthca_arbel_ud_seg {
+	__be32 av[8];
+	__be32 dqpn;
+	__be32 qkey;
+	u32    reserved[2];
+};
+
+struct mthca_bind_seg {
+	__be32 flags;		/* [31] Atomic [30] rem write [29] rem read */
+	u32    reserved;
+	__be32 new_rkey;
+	__be32 lkey;
+	__be64 addr;
+	__be64 length;
+};
+
+struct mthca_raddr_seg {
+	__be64 raddr;
+	__be32 rkey;
+	u32    reserved;
+};
+
+struct mthca_atomic_seg {
+	__be64 swap_add;
+	__be64 compare;
+};
+
+struct mthca_data_seg {
+	__be32 byte_count;
+	__be32 lkey;
+	__be64 addr;
+};
+
+struct mthca_mlx_seg {
+	__be32 nda_op;
+	__be32 nds;
+	__be32 flags;		/* [17] VL15 [16] SLR [14:12] static rate
+				   [11:8] SL [3] C [2] E */
+	__be16 rlid;
+	__be16 vcrc;
+};
+
+#endif /* MTHCA_WQE_H */