Merge /spare/repo/linux-2.6/

25 files changed, 1523 insertions, 665 deletions

diff --git a/drivers/infiniband/hw/mthca/Makefile b/drivers/infiniband/hw/mthca/Makefile
index 5dcbd43073e2..c44f7bae5424 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 b1db48dd91d6..9ba3211cef7c 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 d58dcbe66488..889e85096736 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 1557a522d831..cc758a2d2bc6 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 ed517f175dd6..65f976a13e02 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 b4bfbbfe2c3d..afa56bfaab2e 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 5687c3014522..8600b6c3e0c2 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 5ecdd2eeeb0f..7bff5a8425f4 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 535fad7710fb..dd9a44d170c9 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 cbcf2b4722e4..18f0981eb0c1 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 7df223642015..9804174f7f3c 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 2ef916859e17..3241d6c9dc11 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 5be7d949dbf6..a2707605f4c8 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 2a8646150355..1827400f189b 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 4761d844cb5f..bafa51544aa3 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 cbe50feaf680..1f97a44477f5 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 c2c899844e98..3dbf06a6e6f4 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 4fedc32d5871..0576056b34f4 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 17aef3357661..94641808f97f 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 81919a7b4935..1c1c2e230871 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 1d032791cc8b..bcd4b01a339c 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 f7126b14d5ae..0164b84d4ec6 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 000000000000..75cd2d84ef12
--- /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 3024c1b4547d..41613ec8a04e 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 000000000000..1f4c0ff28f79
--- /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 */