Resguardo inicial

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/Kconfig

@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config INFINIBAND_VMWARE_PVRDMA
+	tristate "VMware Paravirtualized RDMA Driver"
+	depends on NETDEVICES && ETHERNET && PCI && INET && VMXNET3
+	help
+	  This driver provides low-level support for VMware Paravirtual
+	  RDMA adapter. It interacts with the VMXNet3 driver to provide
+	  Ethernet capabilities.

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/Makefile

@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_INFINIBAND_VMWARE_PVRDMA) += vmw_pvrdma.o
+
+vmw_pvrdma-y := pvrdma_cmd.o pvrdma_cq.o pvrdma_doorbell.o pvrdma_main.o pvrdma_misc.o pvrdma_mr.o pvrdma_qp.o pvrdma_srq.o pvrdma_verbs.o

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/pvrdma.h

@@ -0,0 +1,555 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ *     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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PVRDMA_H__
+#define __PVRDMA_H__
+
+#include <linux/compiler.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/pci.h>
+#include <linux/semaphore.h>
+#include <linux/workqueue.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/iter.h>
+#include <rdma/vmw_pvrdma-abi.h>
+
+#include "pvrdma_ring.h"
+#include "pvrdma_dev_api.h"
+#include "pvrdma_verbs.h"
+
+/* NOT the same as BIT_MASK(). */
+#define PVRDMA_MASK(n) ((n << 1) - 1)
+
+/*
+ * VMware PVRDMA PCI device id.
+ */
+#define PCI_DEVICE_ID_VMWARE_PVRDMA	0x0820
+
+#define PVRDMA_NUM_RING_PAGES		4
+#define PVRDMA_QP_NUM_HEADER_PAGES	1
+
+struct pvrdma_dev;
+
+struct pvrdma_page_dir {
+	dma_addr_t dir_dma;
+	u64 *dir;
+	int ntables;
+	u64 **tables;
+	u64 npages;
+	void **pages;
+};
+
+struct pvrdma_cq {
+	struct ib_cq ibcq;
+	int offset;
+	spinlock_t cq_lock; /* Poll lock. */
+	struct pvrdma_uar_map *uar;
+	struct ib_umem *umem;
+	struct pvrdma_ring_state *ring_state;
+	struct pvrdma_page_dir pdir;
+	u32 cq_handle;
+	bool is_kernel;
+	refcount_t refcnt;
+	struct completion free;
+};
+
+struct pvrdma_id_table {
+	u32 last;
+	u32 top;
+	u32 max;
+	u32 mask;
+	spinlock_t lock; /* Table lock. */
+	unsigned long *table;
+};
+
+struct pvrdma_uar_map {
+	unsigned long pfn;
+	void __iomem *map;
+	int index;
+};
+
+struct pvrdma_uar_table {
+	struct pvrdma_id_table tbl;
+	int size;
+};
+
+struct pvrdma_ucontext {
+	struct ib_ucontext ibucontext;
+	struct pvrdma_dev *dev;
+	struct pvrdma_uar_map uar;
+	u64 ctx_handle;
+};
+
+struct pvrdma_pd {
+	struct ib_pd ibpd;
+	u32 pdn;
+	u32 pd_handle;
+	int privileged;
+};
+
+struct pvrdma_mr {
+	u32 mr_handle;
+	u64 iova;
+	u64 size;
+};
+
+struct pvrdma_user_mr {
+	struct ib_mr ibmr;
+	struct ib_umem *umem;
+	struct pvrdma_mr mmr;
+	struct pvrdma_page_dir pdir;
+	u64 *pages;
+	u32 npages;
+	u32 max_pages;
+	u32 page_shift;
+};
+
+struct pvrdma_wq {
+	struct pvrdma_ring *ring;
+	spinlock_t lock; /* Work queue lock. */
+	int wqe_cnt;
+	int wqe_size;
+	int max_sg;
+	int offset;
+};
+
+struct pvrdma_ah {
+	struct ib_ah ibah;
+	struct pvrdma_av av;
+};
+
+struct pvrdma_srq {
+	struct ib_srq ibsrq;
+	int offset;
+	spinlock_t lock; /* SRQ lock. */
+	int wqe_cnt;
+	int wqe_size;
+	int max_gs;
+	struct ib_umem *umem;
+	struct pvrdma_ring_state *ring;
+	struct pvrdma_page_dir pdir;
+	u32 srq_handle;
+	int npages;
+	refcount_t refcnt;
+	struct completion free;
+};
+
+struct pvrdma_qp {
+	struct ib_qp ibqp;
+	u32 qp_handle;
+	u32 qkey;
+	struct pvrdma_wq sq;
+	struct pvrdma_wq rq;
+	struct ib_umem *rumem;
+	struct ib_umem *sumem;
+	struct pvrdma_page_dir pdir;
+	struct pvrdma_srq *srq;
+	int npages;
+	int npages_send;
+	int npages_recv;
+	u32 flags;
+	u8 port;
+	u8 state;
+	bool is_kernel;
+	struct mutex mutex; /* QP state mutex. */
+	refcount_t refcnt;
+	struct completion free;
+};
+
+struct pvrdma_dev {
+	/* PCI device-related information. */
+	struct ib_device ib_dev;
+	struct pci_dev *pdev;
+	void __iomem *regs;
+	struct pvrdma_device_shared_region *dsr; /* Shared region pointer */
+	dma_addr_t dsrbase; /* Shared region base address */
+	void *cmd_slot;
+	void *resp_slot;
+	unsigned long flags;
+	struct list_head device_link;
+	unsigned int dsr_version;
+
+	/* Locking and interrupt information. */
+	spinlock_t cmd_lock; /* Command lock. */
+	struct semaphore cmd_sema;
+	struct completion cmd_done;
+	unsigned int nr_vectors;
+
+	/* RDMA-related device information. */
+	union ib_gid *sgid_tbl;
+	struct pvrdma_ring_state *async_ring_state;
+	struct pvrdma_page_dir async_pdir;
+	struct pvrdma_ring_state *cq_ring_state;
+	struct pvrdma_page_dir cq_pdir;
+	struct pvrdma_cq **cq_tbl;
+	spinlock_t cq_tbl_lock;
+	struct pvrdma_srq **srq_tbl;
+	spinlock_t srq_tbl_lock;
+	struct pvrdma_qp **qp_tbl;
+	spinlock_t qp_tbl_lock;
+	struct pvrdma_uar_table uar_table;
+	struct pvrdma_uar_map driver_uar;
+	__be64 sys_image_guid;
+	spinlock_t desc_lock; /* Device modification lock. */
+	u32 port_cap_mask;
+	struct mutex port_mutex; /* Port modification mutex. */
+	bool ib_active;
+	atomic_t num_qps;
+	atomic_t num_cqs;
+	atomic_t num_srqs;
+	atomic_t num_pds;
+	atomic_t num_ahs;
+
+	/* Network device information. */
+	struct net_device *netdev;
+	struct notifier_block nb_netdev;
+};
+
+struct pvrdma_netdevice_work {
+	struct work_struct work;
+	struct net_device *event_netdev;
+	unsigned long event;
+};
+
+static inline struct pvrdma_dev *to_vdev(struct ib_device *ibdev)
+{
+	return container_of(ibdev, struct pvrdma_dev, ib_dev);
+}
+
+static inline struct
+pvrdma_ucontext *to_vucontext(struct ib_ucontext *ibucontext)
+{
+	return container_of(ibucontext, struct pvrdma_ucontext, ibucontext);
+}
+
+static inline struct pvrdma_pd *to_vpd(struct ib_pd *ibpd)
+{
+	return container_of(ibpd, struct pvrdma_pd, ibpd);
+}
+
+static inline struct pvrdma_cq *to_vcq(struct ib_cq *ibcq)
+{
+	return container_of(ibcq, struct pvrdma_cq, ibcq);
+}
+
+static inline struct pvrdma_srq *to_vsrq(struct ib_srq *ibsrq)
+{
+	return container_of(ibsrq, struct pvrdma_srq, ibsrq);
+}
+
+static inline struct pvrdma_user_mr *to_vmr(struct ib_mr *ibmr)
+{
+	return container_of(ibmr, struct pvrdma_user_mr, ibmr);
+}
+
+static inline struct pvrdma_qp *to_vqp(struct ib_qp *ibqp)
+{
+	return container_of(ibqp, struct pvrdma_qp, ibqp);
+}
+
+static inline struct pvrdma_ah *to_vah(struct ib_ah *ibah)
+{
+	return container_of(ibah, struct pvrdma_ah, ibah);
+}
+
+static inline void pvrdma_write_reg(struct pvrdma_dev *dev, u32 reg, u32 val)
+{
+	writel(cpu_to_le32(val), dev->regs + reg);
+}
+
+static inline u32 pvrdma_read_reg(struct pvrdma_dev *dev, u32 reg)
+{
+	return le32_to_cpu(readl(dev->regs + reg));
+}
+
+static inline void pvrdma_write_uar_cq(struct pvrdma_dev *dev, u32 val)
+{
+	writel(cpu_to_le32(val), dev->driver_uar.map + PVRDMA_UAR_CQ_OFFSET);
+}
+
+static inline void pvrdma_write_uar_qp(struct pvrdma_dev *dev, u32 val)
+{
+	writel(cpu_to_le32(val), dev->driver_uar.map + PVRDMA_UAR_QP_OFFSET);
+}
+
+static inline void *pvrdma_page_dir_get_ptr(struct pvrdma_page_dir *pdir,
+					    u64 offset)
+{
+	return pdir->pages[offset / PAGE_SIZE] + (offset % PAGE_SIZE);
+}
+
+static inline enum pvrdma_mtu ib_mtu_to_pvrdma(enum ib_mtu mtu)
+{
+	return (enum pvrdma_mtu)mtu;
+}
+
+static inline enum ib_mtu pvrdma_mtu_to_ib(enum pvrdma_mtu mtu)
+{
+	return (enum ib_mtu)mtu;
+}
+
+static inline enum pvrdma_port_state ib_port_state_to_pvrdma(
+					enum ib_port_state state)
+{
+	return (enum pvrdma_port_state)state;
+}
+
+static inline enum ib_port_state pvrdma_port_state_to_ib(
+					enum pvrdma_port_state state)
+{
+	return (enum ib_port_state)state;
+}
+
+static inline int pvrdma_port_cap_flags_to_ib(int flags)
+{
+	return flags;
+}
+
+static inline enum pvrdma_port_width ib_port_width_to_pvrdma(
+					enum ib_port_width width)
+{
+	return (enum pvrdma_port_width)width;
+}
+
+static inline enum ib_port_width pvrdma_port_width_to_ib(
+					enum pvrdma_port_width width)
+{
+	return (enum ib_port_width)width;
+}
+
+static inline enum pvrdma_port_speed ib_port_speed_to_pvrdma(
+					enum ib_port_speed speed)
+{
+	return (enum pvrdma_port_speed)speed;
+}
+
+static inline enum ib_port_speed pvrdma_port_speed_to_ib(
+					enum pvrdma_port_speed speed)
+{
+	return (enum ib_port_speed)speed;
+}
+
+static inline int ib_qp_attr_mask_to_pvrdma(int attr_mask)
+{
+	return attr_mask & PVRDMA_MASK(PVRDMA_QP_ATTR_MASK_MAX);
+}
+
+static inline enum pvrdma_mig_state ib_mig_state_to_pvrdma(
+					enum ib_mig_state state)
+{
+	return (enum pvrdma_mig_state)state;
+}
+
+static inline enum ib_mig_state pvrdma_mig_state_to_ib(
+					enum pvrdma_mig_state state)
+{
+	return (enum ib_mig_state)state;
+}
+
+static inline int ib_access_flags_to_pvrdma(int flags)
+{
+	return flags;
+}
+
+static inline int pvrdma_access_flags_to_ib(int flags)
+{
+	return flags & PVRDMA_MASK(PVRDMA_ACCESS_FLAGS_MAX);
+}
+
+static inline enum pvrdma_qp_type ib_qp_type_to_pvrdma(enum ib_qp_type type)
+{
+	return (enum pvrdma_qp_type)type;
+}
+
+static inline enum pvrdma_qp_state ib_qp_state_to_pvrdma(enum ib_qp_state state)
+{
+	return (enum pvrdma_qp_state)state;
+}
+
+static inline enum ib_qp_state pvrdma_qp_state_to_ib(enum pvrdma_qp_state state)
+{
+	return (enum ib_qp_state)state;
+}
+
+static inline enum pvrdma_wr_opcode ib_wr_opcode_to_pvrdma(enum ib_wr_opcode op)
+{
+	switch (op) {
+	case IB_WR_RDMA_WRITE:
+		return PVRDMA_WR_RDMA_WRITE;
+	case IB_WR_RDMA_WRITE_WITH_IMM:
+		return PVRDMA_WR_RDMA_WRITE_WITH_IMM;
+	case IB_WR_SEND:
+		return PVRDMA_WR_SEND;
+	case IB_WR_SEND_WITH_IMM:
+		return PVRDMA_WR_SEND_WITH_IMM;
+	case IB_WR_RDMA_READ:
+		return PVRDMA_WR_RDMA_READ;
+	case IB_WR_ATOMIC_CMP_AND_SWP:
+		return PVRDMA_WR_ATOMIC_CMP_AND_SWP;
+	case IB_WR_ATOMIC_FETCH_AND_ADD:
+		return PVRDMA_WR_ATOMIC_FETCH_AND_ADD;
+	case IB_WR_LSO:
+		return PVRDMA_WR_LSO;
+	case IB_WR_SEND_WITH_INV:
+		return PVRDMA_WR_SEND_WITH_INV;
+	case IB_WR_RDMA_READ_WITH_INV:
+		return PVRDMA_WR_RDMA_READ_WITH_INV;
+	case IB_WR_LOCAL_INV:
+		return PVRDMA_WR_LOCAL_INV;
+	case IB_WR_REG_MR:
+		return PVRDMA_WR_FAST_REG_MR;
+	case IB_WR_MASKED_ATOMIC_CMP_AND_SWP:
+		return PVRDMA_WR_MASKED_ATOMIC_CMP_AND_SWP;
+	case IB_WR_MASKED_ATOMIC_FETCH_AND_ADD:
+		return PVRDMA_WR_MASKED_ATOMIC_FETCH_AND_ADD;
+	case IB_WR_REG_MR_INTEGRITY:
+		return PVRDMA_WR_REG_SIG_MR;
+	default:
+		return PVRDMA_WR_ERROR;
+	}
+}
+
+static inline enum ib_wc_status pvrdma_wc_status_to_ib(
+					enum pvrdma_wc_status status)
+{
+	return (enum ib_wc_status)status;
+}
+
+static inline int pvrdma_wc_opcode_to_ib(unsigned int opcode)
+{
+	switch (opcode) {
+	case PVRDMA_WC_SEND:
+		return IB_WC_SEND;
+	case PVRDMA_WC_RDMA_WRITE:
+		return IB_WC_RDMA_WRITE;
+	case PVRDMA_WC_RDMA_READ:
+		return IB_WC_RDMA_READ;
+	case PVRDMA_WC_COMP_SWAP:
+		return IB_WC_COMP_SWAP;
+	case PVRDMA_WC_FETCH_ADD:
+		return IB_WC_FETCH_ADD;
+	case PVRDMA_WC_LOCAL_INV:
+		return IB_WC_LOCAL_INV;
+	case PVRDMA_WC_FAST_REG_MR:
+		return IB_WC_REG_MR;
+	case PVRDMA_WC_MASKED_COMP_SWAP:
+		return IB_WC_MASKED_COMP_SWAP;
+	case PVRDMA_WC_MASKED_FETCH_ADD:
+		return IB_WC_MASKED_FETCH_ADD;
+	case PVRDMA_WC_RECV:
+		return IB_WC_RECV;
+	case PVRDMA_WC_RECV_RDMA_WITH_IMM:
+		return IB_WC_RECV_RDMA_WITH_IMM;
+	default:
+		return IB_WC_SEND;
+	}
+}
+
+static inline int pvrdma_wc_flags_to_ib(int flags)
+{
+	return flags;
+}
+
+static inline int ib_send_flags_to_pvrdma(int flags)
+{
+	return flags & PVRDMA_MASK(PVRDMA_SEND_FLAGS_MAX);
+}
+
+static inline int pvrdma_network_type_to_ib(enum pvrdma_network_type type)
+{
+	switch (type) {
+	case PVRDMA_NETWORK_ROCE_V1:
+		return RDMA_NETWORK_ROCE_V1;
+	case PVRDMA_NETWORK_IPV4:
+		return RDMA_NETWORK_IPV4;
+	case PVRDMA_NETWORK_IPV6:
+		return RDMA_NETWORK_IPV6;
+	default:
+		return RDMA_NETWORK_IPV6;
+	}
+}
+
+void pvrdma_qp_cap_to_ib(struct ib_qp_cap *dst,
+			 const struct pvrdma_qp_cap *src);
+void ib_qp_cap_to_pvrdma(struct pvrdma_qp_cap *dst,
+			 const struct ib_qp_cap *src);
+void pvrdma_gid_to_ib(union ib_gid *dst, const union pvrdma_gid *src);
+void ib_gid_to_pvrdma(union pvrdma_gid *dst, const union ib_gid *src);
+void pvrdma_global_route_to_ib(struct ib_global_route *dst,
+			       const struct pvrdma_global_route *src);
+void ib_global_route_to_pvrdma(struct pvrdma_global_route *dst,
+			       const struct ib_global_route *src);
+void pvrdma_ah_attr_to_rdma(struct rdma_ah_attr *dst,
+			    const struct pvrdma_ah_attr *src);
+void rdma_ah_attr_to_pvrdma(struct pvrdma_ah_attr *dst,
+			    const struct rdma_ah_attr *src);
+u8 ib_gid_type_to_pvrdma(enum ib_gid_type gid_type);
+
+int pvrdma_uar_table_init(struct pvrdma_dev *dev);
+void pvrdma_uar_table_cleanup(struct pvrdma_dev *dev);
+
+int pvrdma_uar_alloc(struct pvrdma_dev *dev, struct pvrdma_uar_map *uar);
+void pvrdma_uar_free(struct pvrdma_dev *dev, struct pvrdma_uar_map *uar);
+
+void _pvrdma_flush_cqe(struct pvrdma_qp *qp, struct pvrdma_cq *cq);
+
+int pvrdma_page_dir_init(struct pvrdma_dev *dev, struct pvrdma_page_dir *pdir,
+			 u64 npages, bool alloc_pages);
+void pvrdma_page_dir_cleanup(struct pvrdma_dev *dev,
+			     struct pvrdma_page_dir *pdir);
+int pvrdma_page_dir_insert_dma(struct pvrdma_page_dir *pdir, u64 idx,
+			       dma_addr_t daddr);
+int pvrdma_page_dir_insert_umem(struct pvrdma_page_dir *pdir,
+				struct ib_umem *umem, u64 offset);
+dma_addr_t pvrdma_page_dir_get_dma(struct pvrdma_page_dir *pdir, u64 idx);
+int pvrdma_page_dir_insert_page_list(struct pvrdma_page_dir *pdir,
+				     u64 *page_list, int num_pages);
+
+int pvrdma_cmd_post(struct pvrdma_dev *dev, union pvrdma_cmd_req *req,
+		    union pvrdma_cmd_resp *rsp, unsigned resp_code);
+
+#endif /* __PVRDMA_H__ */

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/pvrdma_cmd.c

@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ *     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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/list.h>
+
+#include "pvrdma.h"
+
+#define PVRDMA_CMD_TIMEOUT	10000 /* ms */
+
+static inline int pvrdma_cmd_recv(struct pvrdma_dev *dev,
+				  union pvrdma_cmd_resp *resp,
+				  unsigned resp_code)
+{
+	int err;
+
+	dev_dbg(&dev->pdev->dev, "receive response from device\n");
+
+	err = wait_for_completion_interruptible_timeout(&dev->cmd_done,
+			msecs_to_jiffies(PVRDMA_CMD_TIMEOUT));
+	if (err == 0 || err == -ERESTARTSYS) {
+		dev_warn(&dev->pdev->dev,
+			 "completion timeout or interrupted\n");
+		return -ETIMEDOUT;
+	}
+
+	spin_lock(&dev->cmd_lock);
+	memcpy(resp, dev->resp_slot, sizeof(*resp));
+	spin_unlock(&dev->cmd_lock);
+
+	if (resp->hdr.ack != resp_code) {
+		dev_warn(&dev->pdev->dev,
+			 "unknown response %#x expected %#x\n",
+			 resp->hdr.ack, resp_code);
+		return -EFAULT;
+	}
+
+	return 0;
+}
+
+int
+pvrdma_cmd_post(struct pvrdma_dev *dev, union pvrdma_cmd_req *req,
+		union pvrdma_cmd_resp *resp, unsigned resp_code)
+{
+	int err;
+
+	dev_dbg(&dev->pdev->dev, "post request to device\n");
+
+	/* Serializiation */
+	down(&dev->cmd_sema);
+
+	BUILD_BUG_ON(sizeof(union pvrdma_cmd_req) !=
+		     sizeof(struct pvrdma_cmd_modify_qp));
+
+	spin_lock(&dev->cmd_lock);
+	memcpy(dev->cmd_slot, req, sizeof(*req));
+	spin_unlock(&dev->cmd_lock);
+
+	init_completion(&dev->cmd_done);
+	pvrdma_write_reg(dev, PVRDMA_REG_REQUEST, 0);
+
+	/* Make sure the request is written before reading status. */
+	mb();
+
+	err = pvrdma_read_reg(dev, PVRDMA_REG_ERR);
+	if (err == 0) {
+		if (resp != NULL)
+			err = pvrdma_cmd_recv(dev, resp, resp_code);
+	} else {
+		dev_warn(&dev->pdev->dev,
+			 "failed to write request error reg: %d\n", err);
+		err = -EFAULT;
+	}
+
+	up(&dev->cmd_sema);
+
+	return err;
+}

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c

@@ -0,0 +1,405 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ *     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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/page.h>
+#include <linux/io.h>
+#include <linux/wait.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/uverbs_ioctl.h>
+
+#include "pvrdma.h"
+
+/**
+ * pvrdma_req_notify_cq - request notification for a completion queue
+ * @ibcq: the completion queue
+ * @notify_flags: notification flags
+ *
+ * @return: 0 for success.
+ */
+int pvrdma_req_notify_cq(struct ib_cq *ibcq,
+			 enum ib_cq_notify_flags notify_flags)
+{
+	struct pvrdma_dev *dev = to_vdev(ibcq->device);
+	struct pvrdma_cq *cq = to_vcq(ibcq);
+	u32 val = cq->cq_handle;
+	unsigned long flags;
+	int has_data = 0;
+
+	val |= (notify_flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED ?
+		PVRDMA_UAR_CQ_ARM_SOL : PVRDMA_UAR_CQ_ARM;
+
+	spin_lock_irqsave(&cq->cq_lock, flags);
+
+	pvrdma_write_uar_cq(dev, val);
+
+	if (notify_flags & IB_CQ_REPORT_MISSED_EVENTS) {
+		unsigned int head;
+
+		has_data = pvrdma_idx_ring_has_data(&cq->ring_state->rx,
+						    cq->ibcq.cqe, &head);
+		if (unlikely(has_data == PVRDMA_INVALID_IDX))
+			dev_err(&dev->pdev->dev, "CQ ring state invalid\n");
+	}
+
+	spin_unlock_irqrestore(&cq->cq_lock, flags);
+
+	return has_data;
+}
+
+/**
+ * pvrdma_create_cq - create completion queue
+ * @ibcq: Allocated CQ
+ * @attr: completion queue attributes
+ * @attrs: bundle
+ *
+ * @return: 0 on success
+ */
+int pvrdma_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
+		     struct uverbs_attr_bundle *attrs)
+{
+	struct ib_udata *udata = &attrs->driver_udata;
+	struct ib_device *ibdev = ibcq->device;
+	int entries = attr->cqe;
+	struct pvrdma_dev *dev = to_vdev(ibdev);
+	struct pvrdma_cq *cq = to_vcq(ibcq);
+	int ret;
+	int npages;
+	unsigned long flags;
+	union pvrdma_cmd_req req;
+	union pvrdma_cmd_resp rsp;
+	struct pvrdma_cmd_create_cq *cmd = &req.create_cq;
+	struct pvrdma_cmd_create_cq_resp *resp = &rsp.create_cq_resp;
+	struct pvrdma_create_cq_resp cq_resp = {};
+	struct pvrdma_create_cq ucmd;
+	struct pvrdma_ucontext *context = rdma_udata_to_drv_context(
+		udata, struct pvrdma_ucontext, ibucontext);
+
+	BUILD_BUG_ON(sizeof(struct pvrdma_cqe) != 64);
+
+	if (attr->flags)
+		return -EOPNOTSUPP;
+
+	entries = roundup_pow_of_two(entries);
+	if (entries < 1 || entries > dev->dsr->caps.max_cqe)
+		return -EINVAL;
+
+	if (!atomic_add_unless(&dev->num_cqs, 1, dev->dsr->caps.max_cq))
+		return -ENOMEM;
+
+	cq->ibcq.cqe = entries;
+	cq->is_kernel = !udata;
+
+	if (!cq->is_kernel) {
+		ret = ib_copy_validate_udata_in(udata, ucmd, reserved);
+		if (ret)
+			goto err_cq;
+
+		cq->umem = ib_umem_get_va(ibdev, ucmd.buf_addr, ucmd.buf_size,
+					  IB_ACCESS_LOCAL_WRITE);
+		if (IS_ERR(cq->umem)) {
+			ret = PTR_ERR(cq->umem);
+			goto err_cq;
+		}
+
+		npages = ib_umem_num_dma_blocks(cq->umem, PAGE_SIZE);
+	} else {
+		/* One extra page for shared ring state */
+		npages = 1 + (entries * sizeof(struct pvrdma_cqe) +
+			      PAGE_SIZE - 1) / PAGE_SIZE;
+
+		/* Skip header page. */
+		cq->offset = PAGE_SIZE;
+	}
+
+	if (npages < 0 || npages > PVRDMA_PAGE_DIR_MAX_PAGES) {
+		dev_warn(&dev->pdev->dev,
+			 "overflow pages in completion queue\n");
+		ret = -EINVAL;
+		goto err_umem;
+	}
+
+	ret = pvrdma_page_dir_init(dev, &cq->pdir, npages, cq->is_kernel);
+	if (ret) {
+		dev_warn(&dev->pdev->dev,
+			 "could not allocate page directory\n");
+		goto err_umem;
+	}
+
+	/* Ring state is always the first page. Set in library for user cq. */
+	if (cq->is_kernel)
+		cq->ring_state = cq->pdir.pages[0];
+	else
+		pvrdma_page_dir_insert_umem(&cq->pdir, cq->umem, 0);
+
+	refcount_set(&cq->refcnt, 1);
+	init_completion(&cq->free);
+	spin_lock_init(&cq->cq_lock);
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->hdr.cmd = PVRDMA_CMD_CREATE_CQ;
+	cmd->nchunks = npages;
+	cmd->ctx_handle = context ? context->ctx_handle : 0;
+	cmd->cqe = entries;
+	cmd->pdir_dma = cq->pdir.dir_dma;
+	ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_CQ_RESP);
+	if (ret < 0) {
+		dev_warn(&dev->pdev->dev,
+			 "could not create completion queue, error: %d\n", ret);
+		goto err_page_dir;
+	}
+
+	cq->ibcq.cqe = resp->cqe;
+	cq->cq_handle = resp->cq_handle;
+	cq_resp.cqn = resp->cq_handle;
+	spin_lock_irqsave(&dev->cq_tbl_lock, flags);
+	dev->cq_tbl[cq->cq_handle % dev->dsr->caps.max_cq] = cq;
+	spin_unlock_irqrestore(&dev->cq_tbl_lock, flags);
+
+	if (!cq->is_kernel) {
+		cq->uar = &context->uar;
+
+		/* Copy udata back. */
+		ret = ib_respond_udata(udata, cq_resp);
+		if (ret) {
+			pvrdma_destroy_cq(&cq->ibcq, udata);
+			return ret;
+		}
+	}
+
+	return 0;
+
+err_page_dir:
+	pvrdma_page_dir_cleanup(dev, &cq->pdir);
+err_umem:
+	ib_umem_release(cq->umem);
+err_cq:
+	atomic_dec(&dev->num_cqs);
+	return ret;
+}
+
+static void pvrdma_free_cq(struct pvrdma_dev *dev, struct pvrdma_cq *cq)
+{
+	if (refcount_dec_and_test(&cq->refcnt))
+		complete(&cq->free);
+	wait_for_completion(&cq->free);
+
+	ib_umem_release(cq->umem);
+
+	pvrdma_page_dir_cleanup(dev, &cq->pdir);
+}
+
+/**
+ * pvrdma_destroy_cq - destroy completion queue
+ * @cq: the completion queue to destroy.
+ * @udata: user data or null for kernel object
+ */
+int pvrdma_destroy_cq(struct ib_cq *cq, struct ib_udata *udata)
+{
+	struct pvrdma_cq *vcq = to_vcq(cq);
+	union pvrdma_cmd_req req;
+	struct pvrdma_cmd_destroy_cq *cmd = &req.destroy_cq;
+	struct pvrdma_dev *dev = to_vdev(cq->device);
+	unsigned long flags;
+	int ret;
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->hdr.cmd = PVRDMA_CMD_DESTROY_CQ;
+	cmd->cq_handle = vcq->cq_handle;
+
+	ret = pvrdma_cmd_post(dev, &req, NULL, 0);
+	if (ret < 0)
+		dev_warn(&dev->pdev->dev,
+			 "could not destroy completion queue, error: %d\n",
+			 ret);
+
+	/* free cq's resources */
+	spin_lock_irqsave(&dev->cq_tbl_lock, flags);
+	dev->cq_tbl[vcq->cq_handle] = NULL;
+	spin_unlock_irqrestore(&dev->cq_tbl_lock, flags);
+
+	pvrdma_free_cq(dev, vcq);
+	atomic_dec(&dev->num_cqs);
+	return 0;
+}
+
+static inline struct pvrdma_cqe *get_cqe(struct pvrdma_cq *cq, int i)
+{
+	return (struct pvrdma_cqe *)pvrdma_page_dir_get_ptr(
+					&cq->pdir,
+					cq->offset +
+					sizeof(struct pvrdma_cqe) * i);
+}
+
+void _pvrdma_flush_cqe(struct pvrdma_qp *qp, struct pvrdma_cq *cq)
+{
+	unsigned int head;
+	int has_data;
+
+	if (!cq->is_kernel)
+		return;
+
+	/* Lock held */
+	has_data = pvrdma_idx_ring_has_data(&cq->ring_state->rx,
+					    cq->ibcq.cqe, &head);
+	if (unlikely(has_data > 0)) {
+		int items;
+		int curr;
+		int tail = pvrdma_idx(&cq->ring_state->rx.prod_tail,
+				      cq->ibcq.cqe);
+		struct pvrdma_cqe *cqe;
+		struct pvrdma_cqe *curr_cqe;
+
+		items = (tail > head) ? (tail - head) :
+			(cq->ibcq.cqe - head + tail);
+		curr = --tail;
+		while (items-- > 0) {
+			if (curr < 0)
+				curr = cq->ibcq.cqe - 1;
+			if (tail < 0)
+				tail = cq->ibcq.cqe - 1;
+			curr_cqe = get_cqe(cq, curr);
+			if ((curr_cqe->qp & 0xFFFF) != qp->qp_handle) {
+				if (curr != tail) {
+					cqe = get_cqe(cq, tail);
+					*cqe = *curr_cqe;
+				}
+				tail--;
+			} else {
+				pvrdma_idx_ring_inc(
+					&cq->ring_state->rx.cons_head,
+					cq->ibcq.cqe);
+			}
+			curr--;
+		}
+	}
+}
+
+static int pvrdma_poll_one(struct pvrdma_cq *cq, struct pvrdma_qp **cur_qp,
+			   struct ib_wc *wc)
+{
+	struct pvrdma_dev *dev = to_vdev(cq->ibcq.device);
+	int has_data;
+	unsigned int head;
+	bool tried = false;
+	struct pvrdma_cqe *cqe;
+
+retry:
+	has_data = pvrdma_idx_ring_has_data(&cq->ring_state->rx,
+					    cq->ibcq.cqe, &head);
+	if (has_data == 0) {
+		if (tried)
+			return -EAGAIN;
+
+		pvrdma_write_uar_cq(dev, cq->cq_handle | PVRDMA_UAR_CQ_POLL);
+
+		tried = true;
+		goto retry;
+	} else if (has_data == PVRDMA_INVALID_IDX) {
+		dev_err(&dev->pdev->dev, "CQ ring state invalid\n");
+		return -EAGAIN;
+	}
+
+	cqe = get_cqe(cq, head);
+
+	/* Ensure cqe is valid. */
+	rmb();
+	if (dev->qp_tbl[cqe->qp & 0xffff])
+		*cur_qp = (struct pvrdma_qp *)dev->qp_tbl[cqe->qp & 0xffff];
+	else
+		return -EAGAIN;
+
+	wc->opcode = pvrdma_wc_opcode_to_ib(cqe->opcode);
+	wc->status = pvrdma_wc_status_to_ib(cqe->status);
+	wc->wr_id = cqe->wr_id;
+	wc->qp = &(*cur_qp)->ibqp;
+	wc->byte_len = cqe->byte_len;
+	wc->ex.imm_data = cqe->imm_data;
+	wc->src_qp = cqe->src_qp;
+	wc->wc_flags = pvrdma_wc_flags_to_ib(cqe->wc_flags);
+	wc->pkey_index = cqe->pkey_index;
+	wc->slid = cqe->slid;
+	wc->sl = cqe->sl;
+	wc->dlid_path_bits = cqe->dlid_path_bits;
+	wc->port_num = cqe->port_num;
+	wc->vendor_err = cqe->vendor_err;
+	wc->network_hdr_type = pvrdma_network_type_to_ib(cqe->network_hdr_type);
+
+	/* Update shared ring state */
+	pvrdma_idx_ring_inc(&cq->ring_state->rx.cons_head, cq->ibcq.cqe);
+
+	return 0;
+}
+
+/**
+ * pvrdma_poll_cq - poll for work completion queue entries
+ * @ibcq: completion queue
+ * @num_entries: the maximum number of entries
+ * @wc: pointer to work completion array
+ *
+ * @return: number of polled completion entries
+ */
+int pvrdma_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
+{
+	struct pvrdma_cq *cq = to_vcq(ibcq);
+	struct pvrdma_qp *cur_qp = NULL;
+	unsigned long flags;
+	int npolled;
+
+	if (num_entries < 1 || wc == NULL)
+		return 0;
+
+	spin_lock_irqsave(&cq->cq_lock, flags);
+	for (npolled = 0; npolled < num_entries; ++npolled) {
+		if (pvrdma_poll_one(cq, &cur_qp, wc + npolled))
+			break;
+	}
+
+	spin_unlock_irqrestore(&cq->cq_lock, flags);
+
+	/* Ensure we do not return errors from poll_cq */
+	return npolled;
+}

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/pvrdma_dev_api.h

@@ -0,0 +1,685 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ *     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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PVRDMA_DEV_API_H__
+#define __PVRDMA_DEV_API_H__
+
+#include <linux/types.h>
+
+#include "pvrdma_verbs.h"
+
+/*
+ * PVRDMA version macros. Some new features require updates to PVRDMA_VERSION.
+ * These macros allow us to check for different features if necessary.
+ */
+
+#define PVRDMA_ROCEV1_VERSION		17
+#define PVRDMA_ROCEV2_VERSION		18
+#define PVRDMA_PPN64_VERSION		19
+#define PVRDMA_QPHANDLE_VERSION		20
+#define PVRDMA_VERSION			PVRDMA_QPHANDLE_VERSION
+
+#define PVRDMA_BOARD_ID			1
+#define PVRDMA_REV_ID			1
+
+/*
+ * Masks and accessors for page directory, which is a two-level lookup:
+ * page directory -> page table -> page. Only one directory for now, but we
+ * could expand that easily. 9 bits for tables, 9 bits for pages, gives one
+ * gigabyte for memory regions and so forth.
+ */
+
+#define PVRDMA_PDIR_SHIFT		18
+#define PVRDMA_PTABLE_SHIFT		9
+#define PVRDMA_PAGE_DIR_DIR(x)		(((x) >> PVRDMA_PDIR_SHIFT) & 0x1)
+#define PVRDMA_PAGE_DIR_TABLE(x)	(((x) >> PVRDMA_PTABLE_SHIFT) & 0x1ff)
+#define PVRDMA_PAGE_DIR_PAGE(x)		((x) & 0x1ff)
+#define PVRDMA_PAGE_DIR_MAX_PAGES	(1 * 512 * 512)
+#define PVRDMA_MAX_FAST_REG_PAGES	128
+
+/*
+ * Max MSI-X vectors.
+ */
+
+#define PVRDMA_MAX_INTERRUPTS	3
+
+/* Register offsets within PCI resource on BAR1. */
+#define PVRDMA_REG_VERSION	0x00	/* R: Version of device. */
+#define PVRDMA_REG_DSRLOW	0x04	/* W: Device shared region low PA. */
+#define PVRDMA_REG_DSRHIGH	0x08	/* W: Device shared region high PA. */
+#define PVRDMA_REG_CTL		0x0c	/* W: PVRDMA_DEVICE_CTL */
+#define PVRDMA_REG_REQUEST	0x10	/* W: Indicate device request. */
+#define PVRDMA_REG_ERR		0x14	/* R: Device error. */
+#define PVRDMA_REG_ICR		0x18	/* R: Interrupt cause. */
+#define PVRDMA_REG_IMR		0x1c	/* R/W: Interrupt mask. */
+#define PVRDMA_REG_MACL		0x20	/* R/W: MAC address low. */
+#define PVRDMA_REG_MACH		0x24	/* R/W: MAC address high. */
+
+/* Object flags. */
+#define PVRDMA_CQ_FLAG_ARMED_SOL	BIT(0)	/* Armed for solicited-only. */
+#define PVRDMA_CQ_FLAG_ARMED		BIT(1)	/* Armed. */
+#define PVRDMA_MR_FLAG_DMA		BIT(0)	/* DMA region. */
+#define PVRDMA_MR_FLAG_FRMR		BIT(1)	/* Fast reg memory region. */
+
+/*
+ * Atomic operation capability (masked versions are extended atomic
+ * operations.
+ */
+
+#define PVRDMA_ATOMIC_OP_COMP_SWAP	BIT(0)	/* Compare and swap. */
+#define PVRDMA_ATOMIC_OP_FETCH_ADD	BIT(1)	/* Fetch and add. */
+#define PVRDMA_ATOMIC_OP_MASK_COMP_SWAP	BIT(2)	/* Masked compare and swap. */
+#define PVRDMA_ATOMIC_OP_MASK_FETCH_ADD	BIT(3)	/* Masked fetch and add. */
+
+/*
+ * Base Memory Management Extension flags to support Fast Reg Memory Regions
+ * and Fast Reg Work Requests. Each flag represents a verb operation and we
+ * must support all of them to qualify for the BMME device cap.
+ */
+
+#define PVRDMA_BMME_FLAG_LOCAL_INV	BIT(0)	/* Local Invalidate. */
+#define PVRDMA_BMME_FLAG_REMOTE_INV	BIT(1)	/* Remote Invalidate. */
+#define PVRDMA_BMME_FLAG_FAST_REG_WR	BIT(2)	/* Fast Reg Work Request. */
+
+/*
+ * GID types. The interpretation of the gid_types bit field in the device
+ * capabilities will depend on the device mode. For now, the device only
+ * supports RoCE as mode, so only the different GID types for RoCE are
+ * defined.
+ */
+
+#define PVRDMA_GID_TYPE_FLAG_ROCE_V1	BIT(0)
+#define PVRDMA_GID_TYPE_FLAG_ROCE_V2	BIT(1)
+
+/*
+ * Version checks. This checks whether each version supports specific
+ * capabilities from the device.
+ */
+
+#define PVRDMA_IS_VERSION17(_dev)					\
+	(_dev->dsr_version == PVRDMA_ROCEV1_VERSION &&			\
+	 _dev->dsr->caps.gid_types == PVRDMA_GID_TYPE_FLAG_ROCE_V1)
+
+#define PVRDMA_IS_VERSION18(_dev)					\
+	(_dev->dsr_version >= PVRDMA_ROCEV2_VERSION &&			\
+	 (_dev->dsr->caps.gid_types == PVRDMA_GID_TYPE_FLAG_ROCE_V1 ||  \
+	  _dev->dsr->caps.gid_types == PVRDMA_GID_TYPE_FLAG_ROCE_V2))	\
+
+#define PVRDMA_SUPPORTED(_dev)						\
+	((_dev->dsr->caps.mode == PVRDMA_DEVICE_MODE_ROCE) &&		\
+	 (PVRDMA_IS_VERSION17(_dev) || PVRDMA_IS_VERSION18(_dev)))
+
+/*
+ * Get capability values based on device version.
+ */
+
+#define PVRDMA_GET_CAP(_dev, _old_val, _val) \
+	((PVRDMA_IS_VERSION18(_dev)) ? _val : _old_val)
+
+enum pvrdma_pci_resource {
+	PVRDMA_PCI_RESOURCE_MSIX,	/* BAR0: MSI-X, MMIO. */
+	PVRDMA_PCI_RESOURCE_REG,	/* BAR1: Registers, MMIO. */
+	PVRDMA_PCI_RESOURCE_UAR,	/* BAR2: UAR pages, MMIO, 64-bit. */
+	PVRDMA_PCI_RESOURCE_LAST,	/* Last. */
+};
+
+enum pvrdma_device_ctl {
+	PVRDMA_DEVICE_CTL_ACTIVATE,	/* Activate device. */
+	PVRDMA_DEVICE_CTL_UNQUIESCE,	/* Unquiesce device. */
+	PVRDMA_DEVICE_CTL_RESET,	/* Reset device. */
+};
+
+enum pvrdma_intr_vector {
+	PVRDMA_INTR_VECTOR_RESPONSE,	/* Command response. */
+	PVRDMA_INTR_VECTOR_ASYNC,	/* Async events. */
+	PVRDMA_INTR_VECTOR_CQ,		/* CQ notification. */
+	/* Additional CQ notification vectors. */
+};
+
+enum pvrdma_intr_cause {
+	PVRDMA_INTR_CAUSE_RESPONSE	= (1 << PVRDMA_INTR_VECTOR_RESPONSE),
+	PVRDMA_INTR_CAUSE_ASYNC		= (1 << PVRDMA_INTR_VECTOR_ASYNC),
+	PVRDMA_INTR_CAUSE_CQ		= (1 << PVRDMA_INTR_VECTOR_CQ),
+};
+
+enum pvrdma_gos_bits {
+	PVRDMA_GOS_BITS_UNK,		/* Unknown. */
+	PVRDMA_GOS_BITS_32,		/* 32-bit. */
+	PVRDMA_GOS_BITS_64,		/* 64-bit. */
+};
+
+enum pvrdma_gos_type {
+	PVRDMA_GOS_TYPE_UNK,		/* Unknown. */
+	PVRDMA_GOS_TYPE_LINUX,		/* Linux. */
+};
+
+enum pvrdma_device_mode {
+	PVRDMA_DEVICE_MODE_ROCE,	/* RoCE. */
+	PVRDMA_DEVICE_MODE_IWARP,	/* iWarp. */
+	PVRDMA_DEVICE_MODE_IB,		/* InfiniBand. */
+};
+
+struct pvrdma_gos_info {
+	u32 gos_bits:2;			/* W: PVRDMA_GOS_BITS_ */
+	u32 gos_type:4;			/* W: PVRDMA_GOS_TYPE_ */
+	u32 gos_ver:16;			/* W: Guest OS version. */
+	u32 gos_misc:10;		/* W: Other. */
+	u32 pad;			/* Pad to 8-byte alignment. */
+};
+
+struct pvrdma_device_caps {
+	u64 fw_ver;				/* R: Query device. */
+	__be64 node_guid;
+	__be64 sys_image_guid;
+	u64 max_mr_size;
+	u64 page_size_cap;
+	u64 atomic_arg_sizes;			/* EX verbs. */
+	u32 ex_comp_mask;			/* EX verbs. */
+	u32 device_cap_flags2;			/* EX verbs. */
+	u32 max_fa_bit_boundary;		/* EX verbs. */
+	u32 log_max_atomic_inline_arg;		/* EX verbs. */
+	u32 vendor_id;
+	u32 vendor_part_id;
+	u32 hw_ver;
+	u32 max_qp;
+	u32 max_qp_wr;
+	u32 device_cap_flags;
+	u32 max_sge;
+	u32 max_sge_rd;
+	u32 max_cq;
+	u32 max_cqe;
+	u32 max_mr;
+	u32 max_pd;
+	u32 max_qp_rd_atom;
+	u32 max_ee_rd_atom;
+	u32 max_res_rd_atom;
+	u32 max_qp_init_rd_atom;
+	u32 max_ee_init_rd_atom;
+	u32 max_ee;
+	u32 max_rdd;
+	u32 max_mw;
+	u32 max_raw_ipv6_qp;
+	u32 max_raw_ethy_qp;
+	u32 max_mcast_grp;
+	u32 max_mcast_qp_attach;
+	u32 max_total_mcast_qp_attach;
+	u32 max_ah;
+	u32 max_fmr;
+	u32 max_map_per_fmr;
+	u32 max_srq;
+	u32 max_srq_wr;
+	u32 max_srq_sge;
+	u32 max_uar;
+	u32 gid_tbl_len;
+	u16 max_pkeys;
+	u8  local_ca_ack_delay;
+	u8  phys_port_cnt;
+	u8  mode;				/* PVRDMA_DEVICE_MODE_ */
+	u8  atomic_ops;				/* PVRDMA_ATOMIC_OP_* bits */
+	u8  bmme_flags;				/* FRWR Mem Mgmt Extensions */
+	u8  gid_types;				/* PVRDMA_GID_TYPE_FLAG_ */
+	u32 max_fast_reg_page_list_len;
+};
+
+struct pvrdma_ring_page_info {
+	u32 num_pages;				/* Num pages incl. header. */
+	u32 reserved;				/* Reserved. */
+	u64 pdir_dma;				/* Page directory PA. */
+};
+
+#pragma pack(push, 1)
+
+struct pvrdma_device_shared_region {
+	u32 driver_version;			/* W: Driver version. */
+	u32 pad;				/* Pad to 8-byte align. */
+	struct pvrdma_gos_info gos_info;	/* W: Guest OS information. */
+	u64 cmd_slot_dma;			/* W: Command slot address. */
+	u64 resp_slot_dma;			/* W: Response slot address. */
+	struct pvrdma_ring_page_info async_ring_pages;
+						/* W: Async ring page info. */
+	struct pvrdma_ring_page_info cq_ring_pages;
+						/* W: CQ ring page info. */
+	union {
+		u32 uar_pfn;			/* W: UAR pageframe. */
+		u64 uar_pfn64;			/* W: 64-bit UAR page frame. */
+	};
+	struct pvrdma_device_caps caps;		/* R: Device capabilities. */
+};
+
+#pragma pack(pop)
+
+/* Event types. Currently a 1:1 mapping with enum ib_event. */
+enum pvrdma_eqe_type {
+	PVRDMA_EVENT_CQ_ERR,
+	PVRDMA_EVENT_QP_FATAL,
+	PVRDMA_EVENT_QP_REQ_ERR,
+	PVRDMA_EVENT_QP_ACCESS_ERR,
+	PVRDMA_EVENT_COMM_EST,
+	PVRDMA_EVENT_SQ_DRAINED,
+	PVRDMA_EVENT_PATH_MIG,
+	PVRDMA_EVENT_PATH_MIG_ERR,
+	PVRDMA_EVENT_DEVICE_FATAL,
+	PVRDMA_EVENT_PORT_ACTIVE,
+	PVRDMA_EVENT_PORT_ERR,
+	PVRDMA_EVENT_LID_CHANGE,
+	PVRDMA_EVENT_PKEY_CHANGE,
+	PVRDMA_EVENT_SM_CHANGE,
+	PVRDMA_EVENT_SRQ_ERR,
+	PVRDMA_EVENT_SRQ_LIMIT_REACHED,
+	PVRDMA_EVENT_QP_LAST_WQE_REACHED,
+	PVRDMA_EVENT_CLIENT_REREGISTER,
+	PVRDMA_EVENT_GID_CHANGE,
+};
+
+/* Event queue element. */
+struct pvrdma_eqe {
+	u32 type;	/* Event type. */
+	u32 info;	/* Handle, other. */
+};
+
+/* CQ notification queue element. */
+struct pvrdma_cqne {
+	u32 info;	/* Handle */
+};
+
+enum {
+	PVRDMA_CMD_FIRST,
+	PVRDMA_CMD_QUERY_PORT = PVRDMA_CMD_FIRST,
+	PVRDMA_CMD_QUERY_PKEY,
+	PVRDMA_CMD_CREATE_PD,
+	PVRDMA_CMD_DESTROY_PD,
+	PVRDMA_CMD_CREATE_MR,
+	PVRDMA_CMD_DESTROY_MR,
+	PVRDMA_CMD_CREATE_CQ,
+	PVRDMA_CMD_RESIZE_CQ,
+	PVRDMA_CMD_DESTROY_CQ,
+	PVRDMA_CMD_CREATE_QP,
+	PVRDMA_CMD_MODIFY_QP,
+	PVRDMA_CMD_QUERY_QP,
+	PVRDMA_CMD_DESTROY_QP,
+	PVRDMA_CMD_CREATE_UC,
+	PVRDMA_CMD_DESTROY_UC,
+	PVRDMA_CMD_CREATE_BIND,
+	PVRDMA_CMD_DESTROY_BIND,
+	PVRDMA_CMD_CREATE_SRQ,
+	PVRDMA_CMD_MODIFY_SRQ,
+	PVRDMA_CMD_QUERY_SRQ,
+	PVRDMA_CMD_DESTROY_SRQ,
+	PVRDMA_CMD_MAX,
+};
+
+enum {
+	PVRDMA_CMD_FIRST_RESP = (1 << 31),
+	PVRDMA_CMD_QUERY_PORT_RESP = PVRDMA_CMD_FIRST_RESP,
+	PVRDMA_CMD_QUERY_PKEY_RESP,
+	PVRDMA_CMD_CREATE_PD_RESP,
+	PVRDMA_CMD_DESTROY_PD_RESP_NOOP,
+	PVRDMA_CMD_CREATE_MR_RESP,
+	PVRDMA_CMD_DESTROY_MR_RESP_NOOP,
+	PVRDMA_CMD_CREATE_CQ_RESP,
+	PVRDMA_CMD_RESIZE_CQ_RESP,
+	PVRDMA_CMD_DESTROY_CQ_RESP_NOOP,
+	PVRDMA_CMD_CREATE_QP_RESP,
+	PVRDMA_CMD_MODIFY_QP_RESP,
+	PVRDMA_CMD_QUERY_QP_RESP,
+	PVRDMA_CMD_DESTROY_QP_RESP,
+	PVRDMA_CMD_CREATE_UC_RESP,
+	PVRDMA_CMD_DESTROY_UC_RESP_NOOP,
+	PVRDMA_CMD_CREATE_BIND_RESP_NOOP,
+	PVRDMA_CMD_DESTROY_BIND_RESP_NOOP,
+	PVRDMA_CMD_CREATE_SRQ_RESP,
+	PVRDMA_CMD_MODIFY_SRQ_RESP,
+	PVRDMA_CMD_QUERY_SRQ_RESP,
+	PVRDMA_CMD_DESTROY_SRQ_RESP,
+	PVRDMA_CMD_MAX_RESP,
+};
+
+struct pvrdma_cmd_hdr {
+	u64 response;		/* Key for response lookup. */
+	u32 cmd;		/* PVRDMA_CMD_ */
+	u32 reserved;		/* Reserved. */
+};
+
+struct pvrdma_cmd_resp_hdr {
+	u64 response;		/* From cmd hdr. */
+	u32 ack;		/* PVRDMA_CMD_XXX_RESP */
+	u8 err;			/* Error. */
+	u8 reserved[3];		/* Reserved. */
+};
+
+struct pvrdma_cmd_query_port {
+	struct pvrdma_cmd_hdr hdr;
+	u8 port_num;
+	u8 reserved[7];
+};
+
+struct pvrdma_cmd_query_port_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	struct pvrdma_port_attr attrs;
+};
+
+struct pvrdma_cmd_query_pkey {
+	struct pvrdma_cmd_hdr hdr;
+	u8 port_num;
+	u8 index;
+	u8 reserved[6];
+};
+
+struct pvrdma_cmd_query_pkey_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	u16 pkey;
+	u8 reserved[6];
+};
+
+struct pvrdma_cmd_create_uc {
+	struct pvrdma_cmd_hdr hdr;
+	union {
+		u32 pfn; /* UAR page frame number */
+		u64 pfn64; /* 64-bit UAR page frame number */
+	};
+};
+
+struct pvrdma_cmd_create_uc_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	u32 ctx_handle;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_destroy_uc {
+	struct pvrdma_cmd_hdr hdr;
+	u32 ctx_handle;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_pd {
+	struct pvrdma_cmd_hdr hdr;
+	u32 ctx_handle;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_pd_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	u32 pd_handle;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_destroy_pd {
+	struct pvrdma_cmd_hdr hdr;
+	u32 pd_handle;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_mr {
+	struct pvrdma_cmd_hdr hdr;
+	u64 start;
+	u64 length;
+	u64 pdir_dma;
+	u32 pd_handle;
+	u32 access_flags;
+	u32 flags;
+	u32 nchunks;
+};
+
+struct pvrdma_cmd_create_mr_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	u32 mr_handle;
+	u32 lkey;
+	u32 rkey;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_destroy_mr {
+	struct pvrdma_cmd_hdr hdr;
+	u32 mr_handle;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_cq {
+	struct pvrdma_cmd_hdr hdr;
+	u64 pdir_dma;
+	u32 ctx_handle;
+	u32 cqe;
+	u32 nchunks;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_cq_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	u32 cq_handle;
+	u32 cqe;
+};
+
+struct pvrdma_cmd_resize_cq {
+	struct pvrdma_cmd_hdr hdr;
+	u32 cq_handle;
+	u32 cqe;
+};
+
+struct pvrdma_cmd_resize_cq_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	u32 cqe;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_destroy_cq {
+	struct pvrdma_cmd_hdr hdr;
+	u32 cq_handle;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_srq {
+	struct pvrdma_cmd_hdr hdr;
+	u64 pdir_dma;
+	u32 pd_handle;
+	u32 nchunks;
+	struct pvrdma_srq_attr attrs;
+	u8 srq_type;
+	u8 reserved[7];
+};
+
+struct pvrdma_cmd_create_srq_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	u32 srqn;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_modify_srq {
+	struct pvrdma_cmd_hdr hdr;
+	u32 srq_handle;
+	u32 attr_mask;
+	struct pvrdma_srq_attr attrs;
+};
+
+struct pvrdma_cmd_query_srq {
+	struct pvrdma_cmd_hdr hdr;
+	u32 srq_handle;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_query_srq_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	struct pvrdma_srq_attr attrs;
+};
+
+struct pvrdma_cmd_destroy_srq {
+	struct pvrdma_cmd_hdr hdr;
+	u32 srq_handle;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_qp {
+	struct pvrdma_cmd_hdr hdr;
+	u64 pdir_dma;
+	u32 pd_handle;
+	u32 send_cq_handle;
+	u32 recv_cq_handle;
+	u32 srq_handle;
+	u32 max_send_wr;
+	u32 max_recv_wr;
+	u32 max_send_sge;
+	u32 max_recv_sge;
+	u32 max_inline_data;
+	u32 lkey;
+	u32 access_flags;
+	u16 total_chunks;
+	u16 send_chunks;
+	u16 max_atomic_arg;
+	u8 sq_sig_all;
+	u8 qp_type;
+	u8 is_srq;
+	u8 reserved[3];
+};
+
+struct pvrdma_cmd_create_qp_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	u32 qpn;
+	u32 max_send_wr;
+	u32 max_recv_wr;
+	u32 max_send_sge;
+	u32 max_recv_sge;
+	u32 max_inline_data;
+};
+
+struct pvrdma_cmd_create_qp_resp_v2 {
+	struct pvrdma_cmd_resp_hdr hdr;
+	u32 qpn;
+	u32 qp_handle;
+	u32 max_send_wr;
+	u32 max_recv_wr;
+	u32 max_send_sge;
+	u32 max_recv_sge;
+	u32 max_inline_data;
+};
+
+struct pvrdma_cmd_modify_qp {
+	struct pvrdma_cmd_hdr hdr;
+	u32 qp_handle;
+	u32 attr_mask;
+	struct pvrdma_qp_attr attrs;
+};
+
+struct pvrdma_cmd_query_qp {
+	struct pvrdma_cmd_hdr hdr;
+	u32 qp_handle;
+	u32 attr_mask;
+};
+
+struct pvrdma_cmd_query_qp_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	struct pvrdma_qp_attr attrs;
+};
+
+struct pvrdma_cmd_destroy_qp {
+	struct pvrdma_cmd_hdr hdr;
+	u32 qp_handle;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_destroy_qp_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	u32 events_reported;
+	u8 reserved[4];
+};
+
+struct pvrdma_cmd_create_bind {
+	struct pvrdma_cmd_hdr hdr;
+	u32 mtu;
+	u32 vlan;
+	u32 index;
+	u8 new_gid[16];
+	u8 gid_type;
+	u8 reserved[3];
+};
+
+struct pvrdma_cmd_destroy_bind {
+	struct pvrdma_cmd_hdr hdr;
+	u32 index;
+	u8 dest_gid[16];
+	u8 reserved[4];
+};
+
+union pvrdma_cmd_req {
+	struct pvrdma_cmd_hdr hdr;
+	struct pvrdma_cmd_query_port query_port;
+	struct pvrdma_cmd_query_pkey query_pkey;
+	struct pvrdma_cmd_create_uc create_uc;
+	struct pvrdma_cmd_destroy_uc destroy_uc;
+	struct pvrdma_cmd_create_pd create_pd;
+	struct pvrdma_cmd_destroy_pd destroy_pd;
+	struct pvrdma_cmd_create_mr create_mr;
+	struct pvrdma_cmd_destroy_mr destroy_mr;
+	struct pvrdma_cmd_create_cq create_cq;
+	struct pvrdma_cmd_resize_cq resize_cq;
+	struct pvrdma_cmd_destroy_cq destroy_cq;
+	struct pvrdma_cmd_create_qp create_qp;
+	struct pvrdma_cmd_modify_qp modify_qp;
+	struct pvrdma_cmd_query_qp query_qp;
+	struct pvrdma_cmd_destroy_qp destroy_qp;
+	struct pvrdma_cmd_create_bind create_bind;
+	struct pvrdma_cmd_destroy_bind destroy_bind;
+	struct pvrdma_cmd_create_srq create_srq;
+	struct pvrdma_cmd_modify_srq modify_srq;
+	struct pvrdma_cmd_query_srq query_srq;
+	struct pvrdma_cmd_destroy_srq destroy_srq;
+};
+
+union pvrdma_cmd_resp {
+	struct pvrdma_cmd_resp_hdr hdr;
+	struct pvrdma_cmd_query_port_resp query_port_resp;
+	struct pvrdma_cmd_query_pkey_resp query_pkey_resp;
+	struct pvrdma_cmd_create_uc_resp create_uc_resp;
+	struct pvrdma_cmd_create_pd_resp create_pd_resp;
+	struct pvrdma_cmd_create_mr_resp create_mr_resp;
+	struct pvrdma_cmd_create_cq_resp create_cq_resp;
+	struct pvrdma_cmd_resize_cq_resp resize_cq_resp;
+	struct pvrdma_cmd_create_qp_resp create_qp_resp;
+	struct pvrdma_cmd_create_qp_resp_v2 create_qp_resp_v2;
+	struct pvrdma_cmd_query_qp_resp query_qp_resp;
+	struct pvrdma_cmd_destroy_qp_resp destroy_qp_resp;
+	struct pvrdma_cmd_create_srq_resp create_srq_resp;
+	struct pvrdma_cmd_query_srq_resp query_srq_resp;
+};
+
+#endif /* __PVRDMA_DEV_API_H__ */

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/pvrdma_doorbell.c

@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ *     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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/bitmap.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+
+#include "pvrdma.h"
+
+int pvrdma_uar_table_init(struct pvrdma_dev *dev)
+{
+	u32 num = dev->dsr->caps.max_uar;
+	u32 mask = num - 1;
+	struct pvrdma_id_table *tbl = &dev->uar_table.tbl;
+
+	if (!is_power_of_2(num))
+		return -EINVAL;
+
+	tbl->last = 0;
+	tbl->top = 0;
+	tbl->max = num;
+	tbl->mask = mask;
+	spin_lock_init(&tbl->lock);
+	tbl->table = bitmap_zalloc(num, GFP_KERNEL);
+	if (!tbl->table)
+		return -ENOMEM;
+
+	/* 0th UAR is taken by the device. */
+	__set_bit(0, tbl->table);
+
+	return 0;
+}
+
+void pvrdma_uar_table_cleanup(struct pvrdma_dev *dev)
+{
+	struct pvrdma_id_table *tbl = &dev->uar_table.tbl;
+
+	bitmap_free(tbl->table);
+}
+
+int pvrdma_uar_alloc(struct pvrdma_dev *dev, struct pvrdma_uar_map *uar)
+{
+	struct pvrdma_id_table *tbl;
+	unsigned long flags;
+	u32 obj;
+
+	tbl = &dev->uar_table.tbl;
+
+	spin_lock_irqsave(&tbl->lock, flags);
+	obj = find_next_zero_bit(tbl->table, tbl->max, tbl->last);
+	if (obj >= tbl->max) {
+		tbl->top = (tbl->top + tbl->max) & tbl->mask;
+		obj = find_first_zero_bit(tbl->table, tbl->max);
+	}
+
+	if (obj >= tbl->max) {
+		spin_unlock_irqrestore(&tbl->lock, flags);
+		return -ENOMEM;
+	}
+
+	__set_bit(obj, tbl->table);
+	obj |= tbl->top;
+
+	spin_unlock_irqrestore(&tbl->lock, flags);
+
+	uar->index = obj;
+	uar->pfn = (pci_resource_start(dev->pdev, PVRDMA_PCI_RESOURCE_UAR) >>
+		    PAGE_SHIFT) + uar->index;
+
+	return 0;
+}
+
+void pvrdma_uar_free(struct pvrdma_dev *dev, struct pvrdma_uar_map *uar)
+{
+	struct pvrdma_id_table *tbl = &dev->uar_table.tbl;
+	unsigned long flags;
+	u32 obj;
+
+	obj = uar->index & (tbl->max - 1);
+	spin_lock_irqsave(&tbl->lock, flags);
+	__clear_bit(obj, tbl->table);
+	tbl->last = min(tbl->last, obj);
+	tbl->top = (tbl->top + tbl->max) & tbl->mask;
+	spin_unlock_irqrestore(&tbl->lock, flags);
+}

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/pvrdma_misc.c

@@ -0,0 +1,304 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ *     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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/bitmap.h>
+
+#include "pvrdma.h"
+
+int pvrdma_page_dir_init(struct pvrdma_dev *dev, struct pvrdma_page_dir *pdir,
+			 u64 npages, bool alloc_pages)
+{
+	u64 i;
+
+	if (npages > PVRDMA_PAGE_DIR_MAX_PAGES)
+		return -EINVAL;
+
+	memset(pdir, 0, sizeof(*pdir));
+
+	pdir->dir = dma_alloc_coherent(&dev->pdev->dev, PAGE_SIZE,
+				       &pdir->dir_dma, GFP_KERNEL);
+	if (!pdir->dir)
+		goto err;
+
+	pdir->ntables = PVRDMA_PAGE_DIR_TABLE(npages - 1) + 1;
+	pdir->tables = kzalloc_objs(*pdir->tables, pdir->ntables);
+	if (!pdir->tables)
+		goto err;
+
+	for (i = 0; i < pdir->ntables; i++) {
+		pdir->tables[i] = dma_alloc_coherent(&dev->pdev->dev, PAGE_SIZE,
+						(dma_addr_t *)&pdir->dir[i],
+						GFP_KERNEL);
+		if (!pdir->tables[i])
+			goto err;
+	}
+
+	pdir->npages = npages;
+
+	if (alloc_pages) {
+		pdir->pages = kzalloc_objs(*pdir->pages, npages);
+		if (!pdir->pages)
+			goto err;
+
+		for (i = 0; i < pdir->npages; i++) {
+			dma_addr_t page_dma;
+
+			pdir->pages[i] = dma_alloc_coherent(&dev->pdev->dev,
+							    PAGE_SIZE,
+							    &page_dma,
+							    GFP_KERNEL);
+			if (!pdir->pages[i])
+				goto err;
+
+			pvrdma_page_dir_insert_dma(pdir, i, page_dma);
+		}
+	}
+
+	return 0;
+
+err:
+	pvrdma_page_dir_cleanup(dev, pdir);
+
+	return -ENOMEM;
+}
+
+static u64 *pvrdma_page_dir_table(struct pvrdma_page_dir *pdir, u64 idx)
+{
+	return pdir->tables[PVRDMA_PAGE_DIR_TABLE(idx)];
+}
+
+dma_addr_t pvrdma_page_dir_get_dma(struct pvrdma_page_dir *pdir, u64 idx)
+{
+	return pvrdma_page_dir_table(pdir, idx)[PVRDMA_PAGE_DIR_PAGE(idx)];
+}
+
+static void pvrdma_page_dir_cleanup_pages(struct pvrdma_dev *dev,
+					  struct pvrdma_page_dir *pdir)
+{
+	if (pdir->pages) {
+		u64 i;
+
+		for (i = 0; i < pdir->npages && pdir->pages[i]; i++) {
+			dma_addr_t page_dma = pvrdma_page_dir_get_dma(pdir, i);
+
+			dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
+					  pdir->pages[i], page_dma);
+		}
+
+		kfree(pdir->pages);
+	}
+}
+
+static void pvrdma_page_dir_cleanup_tables(struct pvrdma_dev *dev,
+					   struct pvrdma_page_dir *pdir)
+{
+	if (pdir->tables) {
+		int i;
+
+		pvrdma_page_dir_cleanup_pages(dev, pdir);
+
+		for (i = 0; i < pdir->ntables; i++) {
+			u64 *table = pdir->tables[i];
+
+			if (table)
+				dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
+						  table, pdir->dir[i]);
+		}
+
+		kfree(pdir->tables);
+	}
+}
+
+void pvrdma_page_dir_cleanup(struct pvrdma_dev *dev,
+			     struct pvrdma_page_dir *pdir)
+{
+	if (pdir->dir) {
+		pvrdma_page_dir_cleanup_tables(dev, pdir);
+		dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
+				  pdir->dir, pdir->dir_dma);
+	}
+}
+
+int pvrdma_page_dir_insert_dma(struct pvrdma_page_dir *pdir, u64 idx,
+			       dma_addr_t daddr)
+{
+	u64 *table;
+
+	if (idx >= pdir->npages)
+		return -EINVAL;
+
+	table = pvrdma_page_dir_table(pdir, idx);
+	table[PVRDMA_PAGE_DIR_PAGE(idx)] = daddr;
+
+	return 0;
+}
+
+int pvrdma_page_dir_insert_umem(struct pvrdma_page_dir *pdir,
+				struct ib_umem *umem, u64 offset)
+{
+	struct ib_block_iter biter;
+	u64 i = offset;
+	int ret = 0;
+
+	if (offset >= pdir->npages)
+		return -EINVAL;
+
+	rdma_umem_for_each_dma_block (umem, &biter, PAGE_SIZE) {
+		ret = pvrdma_page_dir_insert_dma(
+			pdir, i, rdma_block_iter_dma_address(&biter));
+		if (ret)
+			goto exit;
+
+		i++;
+	}
+
+exit:
+	return ret;
+}
+
+int pvrdma_page_dir_insert_page_list(struct pvrdma_page_dir *pdir,
+				     u64 *page_list,
+				     int num_pages)
+{
+	int i;
+	int ret;
+
+	if (num_pages > pdir->npages)
+		return -EINVAL;
+
+	for (i = 0; i < num_pages; i++) {
+		ret = pvrdma_page_dir_insert_dma(pdir, i, page_list[i]);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+void pvrdma_qp_cap_to_ib(struct ib_qp_cap *dst, const struct pvrdma_qp_cap *src)
+{
+	dst->max_send_wr = src->max_send_wr;
+	dst->max_recv_wr = src->max_recv_wr;
+	dst->max_send_sge = src->max_send_sge;
+	dst->max_recv_sge = src->max_recv_sge;
+	dst->max_inline_data = src->max_inline_data;
+}
+
+void ib_qp_cap_to_pvrdma(struct pvrdma_qp_cap *dst, const struct ib_qp_cap *src)
+{
+	dst->max_send_wr = src->max_send_wr;
+	dst->max_recv_wr = src->max_recv_wr;
+	dst->max_send_sge = src->max_send_sge;
+	dst->max_recv_sge = src->max_recv_sge;
+	dst->max_inline_data = src->max_inline_data;
+}
+
+void pvrdma_gid_to_ib(union ib_gid *dst, const union pvrdma_gid *src)
+{
+	BUILD_BUG_ON(sizeof(union pvrdma_gid) != sizeof(union ib_gid));
+	memcpy(dst, src, sizeof(*src));
+}
+
+void ib_gid_to_pvrdma(union pvrdma_gid *dst, const union ib_gid *src)
+{
+	BUILD_BUG_ON(sizeof(union pvrdma_gid) != sizeof(union ib_gid));
+	memcpy(dst, src, sizeof(*src));
+}
+
+void pvrdma_global_route_to_ib(struct ib_global_route *dst,
+			       const struct pvrdma_global_route *src)
+{
+	pvrdma_gid_to_ib(&dst->dgid, &src->dgid);
+	dst->flow_label = src->flow_label;
+	dst->sgid_index = src->sgid_index;
+	dst->hop_limit = src->hop_limit;
+	dst->traffic_class = src->traffic_class;
+}
+
+void ib_global_route_to_pvrdma(struct pvrdma_global_route *dst,
+			       const struct ib_global_route *src)
+{
+	ib_gid_to_pvrdma(&dst->dgid, &src->dgid);
+	dst->flow_label = src->flow_label;
+	dst->sgid_index = src->sgid_index;
+	dst->hop_limit = src->hop_limit;
+	dst->traffic_class = src->traffic_class;
+}
+
+void pvrdma_ah_attr_to_rdma(struct rdma_ah_attr *dst,
+			    const struct pvrdma_ah_attr *src)
+{
+	dst->type = RDMA_AH_ATTR_TYPE_ROCE;
+	pvrdma_global_route_to_ib(rdma_ah_retrieve_grh(dst), &src->grh);
+	rdma_ah_set_dlid(dst, src->dlid);
+	rdma_ah_set_sl(dst, src->sl);
+	rdma_ah_set_path_bits(dst, src->src_path_bits);
+	rdma_ah_set_static_rate(dst, src->static_rate);
+	rdma_ah_set_ah_flags(dst, src->ah_flags);
+	rdma_ah_set_port_num(dst, src->port_num);
+	memcpy(dst->roce.dmac, &src->dmac, ETH_ALEN);
+}
+
+void rdma_ah_attr_to_pvrdma(struct pvrdma_ah_attr *dst,
+			    const struct rdma_ah_attr *src)
+{
+	ib_global_route_to_pvrdma(&dst->grh, rdma_ah_read_grh(src));
+	dst->dlid = rdma_ah_get_dlid(src);
+	dst->sl = rdma_ah_get_sl(src);
+	dst->src_path_bits = rdma_ah_get_path_bits(src);
+	dst->static_rate = rdma_ah_get_static_rate(src);
+	dst->ah_flags = rdma_ah_get_ah_flags(src);
+	dst->port_num = rdma_ah_get_port_num(src);
+	memcpy(&dst->dmac, src->roce.dmac, sizeof(dst->dmac));
+}
+
+u8 ib_gid_type_to_pvrdma(enum ib_gid_type gid_type)
+{
+	return (gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP) ?
+		PVRDMA_GID_TYPE_FLAG_ROCE_V2 :
+		PVRDMA_GID_TYPE_FLAG_ROCE_V1;
+}

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/pvrdma_mr.c

@@ -0,0 +1,332 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ *     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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/list.h>
+#include <linux/slab.h>
+
+#include "pvrdma.h"
+
+/**
+ * pvrdma_get_dma_mr - get a DMA memory region
+ * @pd: protection domain
+ * @acc: access flags
+ *
+ * @return: ib_mr pointer on success, otherwise returns an errno.
+ */
+struct ib_mr *pvrdma_get_dma_mr(struct ib_pd *pd, int acc)
+{
+	struct pvrdma_dev *dev = to_vdev(pd->device);
+	struct pvrdma_user_mr *mr;
+	union pvrdma_cmd_req req;
+	union pvrdma_cmd_resp rsp;
+	struct pvrdma_cmd_create_mr *cmd = &req.create_mr;
+	struct pvrdma_cmd_create_mr_resp *resp = &rsp.create_mr_resp;
+	int ret;
+
+	/* Support only LOCAL_WRITE flag for DMA MRs */
+	if (acc & ~IB_ACCESS_LOCAL_WRITE) {
+		dev_warn(&dev->pdev->dev,
+			 "unsupported dma mr access flags %#x\n", acc);
+		return ERR_PTR(-EOPNOTSUPP);
+	}
+
+	mr = kzalloc_obj(*mr);
+	if (!mr)
+		return ERR_PTR(-ENOMEM);
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->hdr.cmd = PVRDMA_CMD_CREATE_MR;
+	cmd->pd_handle = to_vpd(pd)->pd_handle;
+	cmd->access_flags = acc;
+	cmd->flags = PVRDMA_MR_FLAG_DMA;
+
+	ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_MR_RESP);
+	if (ret < 0) {
+		dev_warn(&dev->pdev->dev,
+			 "could not get DMA mem region, error: %d\n", ret);
+		kfree(mr);
+		return ERR_PTR(ret);
+	}
+
+	mr->mmr.mr_handle = resp->mr_handle;
+	mr->ibmr.lkey = resp->lkey;
+	mr->ibmr.rkey = resp->rkey;
+
+	return &mr->ibmr;
+}
+
+/**
+ * pvrdma_reg_user_mr - register a userspace memory region
+ * @pd: protection domain
+ * @start: starting address
+ * @length: length of region
+ * @virt_addr: I/O virtual address
+ * @access_flags: access flags for memory region
+ * @dmah: dma handle
+ * @udata: user data
+ *
+ * @return: ib_mr pointer on success, otherwise returns an errno.
+ */
+struct ib_mr *pvrdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+				 u64 virt_addr, int access_flags,
+				 struct ib_dmah *dmah,
+				 struct ib_udata *udata)
+{
+	struct pvrdma_dev *dev = to_vdev(pd->device);
+	struct pvrdma_user_mr *mr = NULL;
+	struct ib_umem *umem;
+	union pvrdma_cmd_req req;
+	union pvrdma_cmd_resp rsp;
+	struct pvrdma_cmd_create_mr *cmd = &req.create_mr;
+	struct pvrdma_cmd_create_mr_resp *resp = &rsp.create_mr_resp;
+	int ret, npages;
+
+	if (dmah)
+		return ERR_PTR(-EOPNOTSUPP);
+
+	if (length == 0 || length > dev->dsr->caps.max_mr_size) {
+		dev_warn(&dev->pdev->dev, "invalid mem region length\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	umem = ib_umem_get_va(pd->device, start, length, access_flags);
+	if (IS_ERR(umem)) {
+		dev_warn(&dev->pdev->dev,
+			 "could not get umem for mem region\n");
+		return ERR_CAST(umem);
+	}
+
+	npages = ib_umem_num_dma_blocks(umem, PAGE_SIZE);
+	if (npages < 0 || npages > PVRDMA_PAGE_DIR_MAX_PAGES) {
+		dev_warn(&dev->pdev->dev, "overflow %d pages in mem region\n",
+			 npages);
+		ret = -EINVAL;
+		goto err_umem;
+	}
+
+	mr = kzalloc_obj(*mr);
+	if (!mr) {
+		ret = -ENOMEM;
+		goto err_umem;
+	}
+
+	mr->mmr.iova = virt_addr;
+	mr->mmr.size = length;
+	mr->umem = umem;
+
+	ret = pvrdma_page_dir_init(dev, &mr->pdir, npages, false);
+	if (ret) {
+		dev_warn(&dev->pdev->dev,
+			 "could not allocate page directory\n");
+		goto err_umem;
+	}
+
+	ret = pvrdma_page_dir_insert_umem(&mr->pdir, mr->umem, 0);
+	if (ret)
+		goto err_pdir;
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->hdr.cmd = PVRDMA_CMD_CREATE_MR;
+	cmd->start = start;
+	cmd->length = length;
+	cmd->pd_handle = to_vpd(pd)->pd_handle;
+	cmd->access_flags = access_flags;
+	cmd->nchunks = npages;
+	cmd->pdir_dma = mr->pdir.dir_dma;
+
+	ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_MR_RESP);
+	if (ret < 0) {
+		dev_warn(&dev->pdev->dev,
+			 "could not register mem region, error: %d\n", ret);
+		goto err_pdir;
+	}
+
+	mr->mmr.mr_handle = resp->mr_handle;
+	mr->ibmr.lkey = resp->lkey;
+	mr->ibmr.rkey = resp->rkey;
+
+	return &mr->ibmr;
+
+err_pdir:
+	pvrdma_page_dir_cleanup(dev, &mr->pdir);
+err_umem:
+	ib_umem_release(umem);
+	kfree(mr);
+
+	return ERR_PTR(ret);
+}
+
+/**
+ * pvrdma_alloc_mr - allocate a memory region
+ * @pd: protection domain
+ * @mr_type: type of memory region
+ * @max_num_sg: maximum number of pages
+ *
+ * @return: ib_mr pointer on success, otherwise returns an errno.
+ */
+struct ib_mr *pvrdma_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
+			      u32 max_num_sg)
+{
+	struct pvrdma_dev *dev = to_vdev(pd->device);
+	struct pvrdma_user_mr *mr;
+	union pvrdma_cmd_req req;
+	union pvrdma_cmd_resp rsp;
+	struct pvrdma_cmd_create_mr *cmd = &req.create_mr;
+	struct pvrdma_cmd_create_mr_resp *resp = &rsp.create_mr_resp;
+	int size = max_num_sg * sizeof(u64);
+	int ret;
+
+	if (mr_type != IB_MR_TYPE_MEM_REG ||
+	    max_num_sg > PVRDMA_MAX_FAST_REG_PAGES)
+		return ERR_PTR(-EINVAL);
+
+	mr = kzalloc_obj(*mr);
+	if (!mr)
+		return ERR_PTR(-ENOMEM);
+
+	mr->pages = kzalloc(size, GFP_KERNEL);
+	if (!mr->pages) {
+		ret = -ENOMEM;
+		goto freemr;
+	}
+
+	ret = pvrdma_page_dir_init(dev, &mr->pdir, max_num_sg, false);
+	if (ret) {
+		dev_warn(&dev->pdev->dev,
+			 "failed to allocate page dir for mr\n");
+		ret = -ENOMEM;
+		goto freepages;
+	}
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->hdr.cmd = PVRDMA_CMD_CREATE_MR;
+	cmd->pd_handle = to_vpd(pd)->pd_handle;
+	cmd->access_flags = 0;
+	cmd->flags = PVRDMA_MR_FLAG_FRMR;
+	cmd->nchunks = max_num_sg;
+
+	ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_MR_RESP);
+	if (ret < 0) {
+		dev_warn(&dev->pdev->dev,
+			 "could not create FR mem region, error: %d\n", ret);
+		goto freepdir;
+	}
+
+	mr->max_pages = max_num_sg;
+	mr->mmr.mr_handle = resp->mr_handle;
+	mr->ibmr.lkey = resp->lkey;
+	mr->ibmr.rkey = resp->rkey;
+	mr->page_shift = PAGE_SHIFT;
+	mr->umem = NULL;
+
+	return &mr->ibmr;
+
+freepdir:
+	pvrdma_page_dir_cleanup(dev, &mr->pdir);
+freepages:
+	kfree(mr->pages);
+freemr:
+	kfree(mr);
+	return ERR_PTR(ret);
+}
+
+/**
+ * pvrdma_dereg_mr - deregister a memory region
+ * @ibmr: memory region
+ * @udata: pointer to user data
+ *
+ * @return: 0 on success.
+ */
+int pvrdma_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata)
+{
+	struct pvrdma_user_mr *mr = to_vmr(ibmr);
+	struct pvrdma_dev *dev = to_vdev(ibmr->device);
+	union pvrdma_cmd_req req;
+	struct pvrdma_cmd_destroy_mr *cmd = &req.destroy_mr;
+	int ret;
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->hdr.cmd = PVRDMA_CMD_DESTROY_MR;
+	cmd->mr_handle = mr->mmr.mr_handle;
+	ret = pvrdma_cmd_post(dev, &req, NULL, 0);
+	if (ret < 0)
+		dev_warn(&dev->pdev->dev,
+			 "could not deregister mem region, error: %d\n", ret);
+
+	pvrdma_page_dir_cleanup(dev, &mr->pdir);
+	ib_umem_release(mr->umem);
+
+	kfree(mr->pages);
+	kfree(mr);
+
+	return 0;
+}
+
+static int pvrdma_set_page(struct ib_mr *ibmr, u64 addr)
+{
+	struct pvrdma_user_mr *mr = to_vmr(ibmr);
+
+	if (mr->npages == mr->max_pages)
+		return -ENOMEM;
+
+	mr->pages[mr->npages++] = addr;
+	return 0;
+}
+
+int pvrdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
+		     unsigned int *sg_offset)
+{
+	struct pvrdma_user_mr *mr = to_vmr(ibmr);
+	struct pvrdma_dev *dev = to_vdev(ibmr->device);
+	int ret;
+
+	mr->npages = 0;
+
+	ret = ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, pvrdma_set_page);
+	if (ret < 0)
+		dev_warn(&dev->pdev->dev, "could not map sg to pages\n");
+
+	return ret;
+}

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h

@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ *     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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PVRDMA_RING_H__
+#define __PVRDMA_RING_H__
+
+#include <linux/types.h>
+
+#define PVRDMA_INVALID_IDX	-1	/* Invalid index. */
+
+struct pvrdma_ring {
+	atomic_t prod_tail;	/* Producer tail. */
+	atomic_t cons_head;	/* Consumer head. */
+};
+
+struct pvrdma_ring_state {
+	struct pvrdma_ring tx;	/* Tx ring. */
+	struct pvrdma_ring rx;	/* Rx ring. */
+};
+
+static inline int pvrdma_idx_valid(__u32 idx, __u32 max_elems)
+{
+	/* Generates fewer instructions than a less-than. */
+	return (idx & ~((max_elems << 1) - 1)) == 0;
+}
+
+static inline __s32 pvrdma_idx(atomic_t *var, __u32 max_elems)
+{
+	const unsigned int idx = atomic_read(var);
+
+	if (pvrdma_idx_valid(idx, max_elems))
+		return idx & (max_elems - 1);
+	return PVRDMA_INVALID_IDX;
+}
+
+static inline void pvrdma_idx_ring_inc(atomic_t *var, __u32 max_elems)
+{
+	__u32 idx = atomic_read(var) + 1;	/* Increment. */
+
+	idx &= (max_elems << 1) - 1;		/* Modulo size, flip gen. */
+	atomic_set(var, idx);
+}
+
+static inline __s32 pvrdma_idx_ring_has_space(const struct pvrdma_ring *r,
+					      __u32 max_elems, __u32 *out_tail)
+{
+	const __u32 tail = atomic_read(&r->prod_tail);
+	const __u32 head = atomic_read(&r->cons_head);
+
+	if (pvrdma_idx_valid(tail, max_elems) &&
+	    pvrdma_idx_valid(head, max_elems)) {
+		*out_tail = tail & (max_elems - 1);
+		return tail != (head ^ max_elems);
+	}
+	return PVRDMA_INVALID_IDX;
+}
+
+static inline __s32 pvrdma_idx_ring_has_data(const struct pvrdma_ring *r,
+					     __u32 max_elems, __u32 *out_head)
+{
+	const __u32 tail = atomic_read(&r->prod_tail);
+	const __u32 head = atomic_read(&r->cons_head);
+
+	if (pvrdma_idx_valid(tail, max_elems) &&
+	    pvrdma_idx_valid(head, max_elems)) {
+		*out_head = head & (max_elems - 1);
+		return tail != head;
+	}
+	return PVRDMA_INVALID_IDX;
+}
+
+#endif /* __PVRDMA_RING_H__ */

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/pvrdma_srq.c

@@ -0,0 +1,303 @@
+/*
+ * Copyright (c) 2016-2017 VMware, Inc.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ *     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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/page.h>
+#include <linux/io.h>
+#include <linux/wait.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/uverbs_ioctl.h>
+
+#include "pvrdma.h"
+
+/**
+ * pvrdma_query_srq - query shared receive queue
+ * @ibsrq: the shared receive queue to query
+ * @srq_attr: attributes to query and return to client
+ *
+ * @return: 0 for success, otherwise returns an errno.
+ */
+int pvrdma_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
+{
+	struct pvrdma_dev *dev = to_vdev(ibsrq->device);
+	struct pvrdma_srq *srq = to_vsrq(ibsrq);
+	union pvrdma_cmd_req req;
+	union pvrdma_cmd_resp rsp;
+	struct pvrdma_cmd_query_srq *cmd = &req.query_srq;
+	struct pvrdma_cmd_query_srq_resp *resp = &rsp.query_srq_resp;
+	int ret;
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->hdr.cmd = PVRDMA_CMD_QUERY_SRQ;
+	cmd->srq_handle = srq->srq_handle;
+
+	ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_QUERY_SRQ_RESP);
+	if (ret < 0) {
+		dev_warn(&dev->pdev->dev,
+			 "could not query shared receive queue, error: %d\n",
+			 ret);
+		return -EINVAL;
+	}
+
+	srq_attr->srq_limit = resp->attrs.srq_limit;
+	srq_attr->max_wr = resp->attrs.max_wr;
+	srq_attr->max_sge = resp->attrs.max_sge;
+
+	return 0;
+}
+
+/**
+ * pvrdma_create_srq - create shared receive queue
+ * @ibsrq: the IB shared receive queue
+ * @init_attr: shared receive queue attributes
+ * @udata: user data
+ *
+ * @return: 0 on success, otherwise returns an errno.
+ */
+int pvrdma_create_srq(struct ib_srq *ibsrq, struct ib_srq_init_attr *init_attr,
+		      struct ib_udata *udata)
+{
+	struct pvrdma_srq *srq = to_vsrq(ibsrq);
+	struct pvrdma_dev *dev = to_vdev(ibsrq->device);
+	union pvrdma_cmd_req req;
+	union pvrdma_cmd_resp rsp;
+	struct pvrdma_cmd_create_srq *cmd = &req.create_srq;
+	struct pvrdma_cmd_create_srq_resp *resp = &rsp.create_srq_resp;
+	struct pvrdma_create_srq_resp srq_resp = {};
+	struct pvrdma_create_srq ucmd;
+	unsigned long flags;
+	int ret;
+
+	if (!udata) {
+		/* No support for kernel clients. */
+		dev_warn(&dev->pdev->dev,
+			 "no shared receive queue support for kernel client\n");
+		return -EOPNOTSUPP;
+	}
+
+	if (init_attr->srq_type != IB_SRQT_BASIC) {
+		dev_warn(&dev->pdev->dev,
+			 "shared receive queue type %d not supported\n",
+			 init_attr->srq_type);
+		return -EOPNOTSUPP;
+	}
+
+	if (init_attr->attr.max_wr  > dev->dsr->caps.max_srq_wr ||
+	    init_attr->attr.max_sge > dev->dsr->caps.max_srq_sge) {
+		dev_warn(&dev->pdev->dev,
+			 "shared receive queue size invalid\n");
+		return -EINVAL;
+	}
+
+	if (!atomic_add_unless(&dev->num_srqs, 1, dev->dsr->caps.max_srq))
+		return -ENOMEM;
+
+	spin_lock_init(&srq->lock);
+	refcount_set(&srq->refcnt, 1);
+	init_completion(&srq->free);
+
+	dev_dbg(&dev->pdev->dev,
+		"create shared receive queue from user space\n");
+
+	ret = ib_copy_validate_udata_in(udata, ucmd, reserved);
+	if (ret)
+		goto err_srq;
+
+	srq->umem = ib_umem_get_va(ibsrq->device, ucmd.buf_addr, ucmd.buf_size, 0);
+	if (IS_ERR(srq->umem)) {
+		ret = PTR_ERR(srq->umem);
+		goto err_srq;
+	}
+
+	srq->npages = ib_umem_num_dma_blocks(srq->umem, PAGE_SIZE);
+
+	if (srq->npages < 0 || srq->npages > PVRDMA_PAGE_DIR_MAX_PAGES) {
+		dev_warn(&dev->pdev->dev,
+			 "overflow pages in shared receive queue\n");
+		ret = -EINVAL;
+		goto err_umem;
+	}
+
+	ret = pvrdma_page_dir_init(dev, &srq->pdir, srq->npages, false);
+	if (ret) {
+		dev_warn(&dev->pdev->dev,
+			 "could not allocate page directory\n");
+		goto err_umem;
+	}
+
+	pvrdma_page_dir_insert_umem(&srq->pdir, srq->umem, 0);
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->hdr.cmd = PVRDMA_CMD_CREATE_SRQ;
+	cmd->srq_type = init_attr->srq_type;
+	cmd->nchunks = srq->npages;
+	cmd->pd_handle = to_vpd(ibsrq->pd)->pd_handle;
+	cmd->attrs.max_wr = init_attr->attr.max_wr;
+	cmd->attrs.max_sge = init_attr->attr.max_sge;
+	cmd->attrs.srq_limit = init_attr->attr.srq_limit;
+	cmd->pdir_dma = srq->pdir.dir_dma;
+
+	ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_SRQ_RESP);
+	if (ret < 0) {
+		dev_warn(&dev->pdev->dev,
+			 "could not create shared receive queue, error: %d\n",
+			 ret);
+		goto err_page_dir;
+	}
+
+	srq->srq_handle = resp->srqn;
+	srq_resp.srqn = resp->srqn;
+	spin_lock_irqsave(&dev->srq_tbl_lock, flags);
+	dev->srq_tbl[srq->srq_handle % dev->dsr->caps.max_srq] = srq;
+	spin_unlock_irqrestore(&dev->srq_tbl_lock, flags);
+
+	/* Copy udata back. */
+	ret = ib_respond_udata(udata, srq_resp);
+	if (ret) {
+		pvrdma_destroy_srq(&srq->ibsrq, udata);
+		return ret;
+	}
+
+	return 0;
+
+err_page_dir:
+	pvrdma_page_dir_cleanup(dev, &srq->pdir);
+err_umem:
+	ib_umem_release(srq->umem);
+err_srq:
+	atomic_dec(&dev->num_srqs);
+
+	return ret;
+}
+
+static void pvrdma_free_srq(struct pvrdma_dev *dev, struct pvrdma_srq *srq)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->srq_tbl_lock, flags);
+	dev->srq_tbl[srq->srq_handle] = NULL;
+	spin_unlock_irqrestore(&dev->srq_tbl_lock, flags);
+
+	if (refcount_dec_and_test(&srq->refcnt))
+		complete(&srq->free);
+	wait_for_completion(&srq->free);
+
+	/* There is no support for kernel clients, so this is safe. */
+	ib_umem_release(srq->umem);
+
+	pvrdma_page_dir_cleanup(dev, &srq->pdir);
+
+	atomic_dec(&dev->num_srqs);
+}
+
+/**
+ * pvrdma_destroy_srq - destroy shared receive queue
+ * @srq: the shared receive queue to destroy
+ * @udata: user data or null for kernel object
+ *
+ * @return: 0 for success.
+ */
+int pvrdma_destroy_srq(struct ib_srq *srq, struct ib_udata *udata)
+{
+	struct pvrdma_srq *vsrq = to_vsrq(srq);
+	union pvrdma_cmd_req req;
+	struct pvrdma_cmd_destroy_srq *cmd = &req.destroy_srq;
+	struct pvrdma_dev *dev = to_vdev(srq->device);
+	int ret;
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->hdr.cmd = PVRDMA_CMD_DESTROY_SRQ;
+	cmd->srq_handle = vsrq->srq_handle;
+
+	ret = pvrdma_cmd_post(dev, &req, NULL, 0);
+	if (ret < 0)
+		dev_warn(&dev->pdev->dev,
+			 "destroy shared receive queue failed, error: %d\n",
+			 ret);
+
+	pvrdma_free_srq(dev, vsrq);
+	return 0;
+}
+
+/**
+ * pvrdma_modify_srq - modify shared receive queue attributes
+ * @ibsrq: the shared receive queue to modify
+ * @attr: the shared receive queue's new attributes
+ * @attr_mask: attributes mask
+ * @udata: user data
+ *
+ * @returns 0 on success, otherwise returns an errno.
+ */
+int pvrdma_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
+		      enum ib_srq_attr_mask attr_mask, struct ib_udata *udata)
+{
+	struct pvrdma_srq *vsrq = to_vsrq(ibsrq);
+	union pvrdma_cmd_req req;
+	struct pvrdma_cmd_modify_srq *cmd = &req.modify_srq;
+	struct pvrdma_dev *dev = to_vdev(ibsrq->device);
+	int ret;
+
+	/* Only support SRQ limit. */
+	if (!(attr_mask & IB_SRQ_LIMIT))
+		return -EINVAL;
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->hdr.cmd = PVRDMA_CMD_MODIFY_SRQ;
+	cmd->srq_handle = vsrq->srq_handle;
+	cmd->attrs.srq_limit = attr->srq_limit;
+	cmd->attr_mask = attr_mask;
+
+	ret = pvrdma_cmd_post(dev, &req, NULL, 0);
+	if (ret < 0) {
+		dev_warn(&dev->pdev->dev,
+			 "could not modify shared receive queue, error: %d\n",
+			 ret);
+
+		return -EINVAL;
+	}
+
+	return ret;
+}

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.c

@@ -0,0 +1,530 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ *     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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm/page.h>
+#include <linux/inet.h>
+#include <linux/io.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib_smi.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/vmw_pvrdma-abi.h>
+#include <rdma/uverbs_ioctl.h>
+
+#include "pvrdma.h"
+
+/**
+ * pvrdma_query_device - query device
+ * @ibdev: the device to query
+ * @props: the device properties
+ * @uhw: user data
+ *
+ * @return: 0 on success, otherwise negative errno
+ */
+int pvrdma_query_device(struct ib_device *ibdev,
+			struct ib_device_attr *props,
+			struct ib_udata *uhw)
+{
+	struct pvrdma_dev *dev = to_vdev(ibdev);
+	int err;
+
+	err = ib_is_udata_in_empty(uhw);
+	if (err)
+		return err;
+
+	props->fw_ver = dev->dsr->caps.fw_ver;
+	props->sys_image_guid = dev->dsr->caps.sys_image_guid;
+	props->max_mr_size = dev->dsr->caps.max_mr_size;
+	props->page_size_cap = dev->dsr->caps.page_size_cap;
+	props->vendor_id = dev->dsr->caps.vendor_id;
+	props->vendor_part_id = dev->pdev->device;
+	props->hw_ver = dev->dsr->caps.hw_ver;
+	props->max_qp = dev->dsr->caps.max_qp;
+	props->max_qp_wr = dev->dsr->caps.max_qp_wr;
+	props->device_cap_flags = dev->dsr->caps.device_cap_flags;
+	props->max_send_sge = dev->dsr->caps.max_sge;
+	props->max_recv_sge = dev->dsr->caps.max_sge;
+	props->max_sge_rd = PVRDMA_GET_CAP(dev, dev->dsr->caps.max_sge,
+					   dev->dsr->caps.max_sge_rd);
+	props->max_srq = dev->dsr->caps.max_srq;
+	props->max_srq_wr = dev->dsr->caps.max_srq_wr;
+	props->max_srq_sge = dev->dsr->caps.max_srq_sge;
+	props->max_cq = dev->dsr->caps.max_cq;
+	props->max_cqe = dev->dsr->caps.max_cqe;
+	props->max_mr = dev->dsr->caps.max_mr;
+	props->max_pd = dev->dsr->caps.max_pd;
+	props->max_qp_rd_atom = dev->dsr->caps.max_qp_rd_atom;
+	props->max_qp_init_rd_atom = dev->dsr->caps.max_qp_init_rd_atom;
+	props->atomic_cap =
+		dev->dsr->caps.atomic_ops &
+		(PVRDMA_ATOMIC_OP_COMP_SWAP | PVRDMA_ATOMIC_OP_FETCH_ADD) ?
+		IB_ATOMIC_HCA : IB_ATOMIC_NONE;
+	props->masked_atomic_cap = props->atomic_cap;
+	props->max_ah = dev->dsr->caps.max_ah;
+	props->max_pkeys = dev->dsr->caps.max_pkeys;
+	props->local_ca_ack_delay = dev->dsr->caps.local_ca_ack_delay;
+	if ((dev->dsr->caps.bmme_flags & PVRDMA_BMME_FLAG_LOCAL_INV) &&
+	    (dev->dsr->caps.bmme_flags & PVRDMA_BMME_FLAG_REMOTE_INV) &&
+	    (dev->dsr->caps.bmme_flags & PVRDMA_BMME_FLAG_FAST_REG_WR)) {
+		props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
+		props->max_fast_reg_page_list_len = PVRDMA_GET_CAP(dev,
+				PVRDMA_MAX_FAST_REG_PAGES,
+				dev->dsr->caps.max_fast_reg_page_list_len);
+	}
+
+	props->device_cap_flags |= IB_DEVICE_PORT_ACTIVE_EVENT |
+				   IB_DEVICE_RC_RNR_NAK_GEN;
+
+	return ib_respond_empty_udata(uhw);
+}
+
+/**
+ * pvrdma_query_port - query device port attributes
+ * @ibdev: the device to query
+ * @port: the port number
+ * @props: the device properties
+ *
+ * @return: 0 on success, otherwise negative errno
+ */
+int pvrdma_query_port(struct ib_device *ibdev, u32 port,
+		      struct ib_port_attr *props)
+{
+	struct pvrdma_dev *dev = to_vdev(ibdev);
+	union pvrdma_cmd_req req;
+	union pvrdma_cmd_resp rsp;
+	struct pvrdma_cmd_query_port *cmd = &req.query_port;
+	struct pvrdma_cmd_query_port_resp *resp = &rsp.query_port_resp;
+	int err;
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->hdr.cmd = PVRDMA_CMD_QUERY_PORT;
+	cmd->port_num = port;
+
+	err = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_QUERY_PORT_RESP);
+	if (err < 0) {
+		dev_warn(&dev->pdev->dev,
+			 "could not query port, error: %d\n", err);
+		return err;
+	}
+
+	/* props being zeroed by the caller, avoid zeroing it here */
+
+	props->state = pvrdma_port_state_to_ib(resp->attrs.state);
+	props->max_mtu = pvrdma_mtu_to_ib(resp->attrs.max_mtu);
+	props->active_mtu = pvrdma_mtu_to_ib(resp->attrs.active_mtu);
+	props->gid_tbl_len = resp->attrs.gid_tbl_len;
+	props->port_cap_flags =
+		pvrdma_port_cap_flags_to_ib(resp->attrs.port_cap_flags);
+	props->port_cap_flags |= IB_PORT_CM_SUP;
+	props->ip_gids = true;
+	props->max_msg_sz = resp->attrs.max_msg_sz;
+	props->bad_pkey_cntr = resp->attrs.bad_pkey_cntr;
+	props->qkey_viol_cntr = resp->attrs.qkey_viol_cntr;
+	props->pkey_tbl_len = resp->attrs.pkey_tbl_len;
+	props->lid = resp->attrs.lid;
+	props->sm_lid = resp->attrs.sm_lid;
+	props->lmc = resp->attrs.lmc;
+	props->max_vl_num = resp->attrs.max_vl_num;
+	props->sm_sl = resp->attrs.sm_sl;
+	props->subnet_timeout = resp->attrs.subnet_timeout;
+	props->init_type_reply = resp->attrs.init_type_reply;
+	props->active_width = pvrdma_port_width_to_ib(resp->attrs.active_width);
+	props->active_speed = pvrdma_port_speed_to_ib(resp->attrs.active_speed);
+	props->phys_state = resp->attrs.phys_state;
+
+	return 0;
+}
+
+/**
+ * pvrdma_query_gid - query device gid
+ * @ibdev: the device to query
+ * @port: the port number
+ * @index: the index
+ * @gid: the device gid value
+ *
+ * @return: 0 on success, otherwise negative errno
+ */
+int pvrdma_query_gid(struct ib_device *ibdev, u32 port, int index,
+		     union ib_gid *gid)
+{
+	struct pvrdma_dev *dev = to_vdev(ibdev);
+
+	if (index >= dev->dsr->caps.gid_tbl_len)
+		return -EINVAL;
+
+	memcpy(gid, &dev->sgid_tbl[index], sizeof(union ib_gid));
+
+	return 0;
+}
+
+/**
+ * pvrdma_query_pkey - query device port's P_Key table
+ * @ibdev: the device to query
+ * @port: the port number
+ * @index: the index
+ * @pkey: the device P_Key value
+ *
+ * @return: 0 on success, otherwise negative errno
+ */
+int pvrdma_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
+		      u16 *pkey)
+{
+	int err = 0;
+	union pvrdma_cmd_req req;
+	union pvrdma_cmd_resp rsp;
+	struct pvrdma_cmd_query_pkey *cmd = &req.query_pkey;
+
+	memset(cmd, 0, sizeof(*cmd));
+	cmd->hdr.cmd = PVRDMA_CMD_QUERY_PKEY;
+	cmd->port_num = port;
+	cmd->index = index;
+
+	err = pvrdma_cmd_post(to_vdev(ibdev), &req, &rsp,
+			      PVRDMA_CMD_QUERY_PKEY_RESP);
+	if (err < 0) {
+		dev_warn(&to_vdev(ibdev)->pdev->dev,
+			 "could not query pkey, error: %d\n", err);
+		return err;
+	}
+
+	*pkey = rsp.query_pkey_resp.pkey;
+
+	return 0;
+}
+
+enum rdma_link_layer pvrdma_port_link_layer(struct ib_device *ibdev,
+					    u32 port)
+{
+	return IB_LINK_LAYER_ETHERNET;
+}
+
+/**
+ * pvrdma_modify_port - modify device port attributes
+ * @ibdev: the device to modify
+ * @port: the port number
+ * @mask: attributes to modify
+ * @props: the device properties
+ *
+ * @return: 0 on success, otherwise negative errno
+ */
+int pvrdma_modify_port(struct ib_device *ibdev, u32 port, int mask,
+		       struct ib_port_modify *props)
+{
+	struct ib_port_attr attr;
+	struct pvrdma_dev *vdev = to_vdev(ibdev);
+	int ret;
+
+	if (mask & ~IB_PORT_SHUTDOWN) {
+		dev_warn(&vdev->pdev->dev,
+			 "unsupported port modify mask %#x\n", mask);
+		return -EOPNOTSUPP;
+	}
+
+	mutex_lock(&vdev->port_mutex);
+	ret = ib_query_port(ibdev, port, &attr);
+	if (ret)
+		goto out;
+
+	vdev->port_cap_mask |= props->set_port_cap_mask;
+	vdev->port_cap_mask &= ~props->clr_port_cap_mask;
+
+	if (mask & IB_PORT_SHUTDOWN)
+		vdev->ib_active = false;
+
+out:
+	mutex_unlock(&vdev->port_mutex);
+	return ret;
+}
+
+/**
+ * pvrdma_alloc_ucontext - allocate ucontext
+ * @uctx: the uverbs countext
+ * @udata: user data
+ *
+ * @return:  zero on success, otherwise errno.
+ */
+int pvrdma_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata)
+{
+	struct ib_device *ibdev = uctx->device;
+	struct pvrdma_dev *vdev = to_vdev(ibdev);
+	struct pvrdma_ucontext *context = to_vucontext(uctx);
+	union pvrdma_cmd_req req = {};
+	union pvrdma_cmd_resp rsp = {};
+	struct pvrdma_cmd_create_uc *cmd = &req.create_uc;
+	struct pvrdma_cmd_create_uc_resp *resp = &rsp.create_uc_resp;
+	struct pvrdma_alloc_ucontext_resp uresp = {};
+	int ret;
+
+	if (!vdev->ib_active)
+		return -EAGAIN;
+
+	context->dev = vdev;
+	ret = pvrdma_uar_alloc(vdev, &context->uar);
+	if (ret)
+		return -ENOMEM;
+
+	/* get ctx_handle from host */
+	if (vdev->dsr_version < PVRDMA_PPN64_VERSION)
+		cmd->pfn = context->uar.pfn;
+	else
+		cmd->pfn64 = context->uar.pfn;
+
+	cmd->hdr.cmd = PVRDMA_CMD_CREATE_UC;
+	ret = pvrdma_cmd_post(vdev, &req, &rsp, PVRDMA_CMD_CREATE_UC_RESP);
+	if (ret < 0) {
+		dev_warn(&vdev->pdev->dev,
+			 "could not create ucontext, error: %d\n", ret);
+		goto err;
+	}
+
+	context->ctx_handle = resp->ctx_handle;
+
+	/* copy back to user */
+	uresp.qp_tab_size = vdev->dsr->caps.max_qp;
+	ret = ib_respond_udata(udata, uresp);
+	if (ret) {
+		/* pvrdma_dealloc_ucontext() also frees the UAR */
+		pvrdma_dealloc_ucontext(&context->ibucontext);
+		return ret;
+	}
+
+	return 0;
+
+err:
+	pvrdma_uar_free(vdev, &context->uar);
+	return ret;
+}
+
+/**
+ * pvrdma_dealloc_ucontext - deallocate ucontext
+ * @ibcontext: the ucontext
+ */
+void pvrdma_dealloc_ucontext(struct ib_ucontext *ibcontext)
+{
+	struct pvrdma_ucontext *context = to_vucontext(ibcontext);
+	union pvrdma_cmd_req req = {};
+	struct pvrdma_cmd_destroy_uc *cmd = &req.destroy_uc;
+	int ret;
+
+	cmd->hdr.cmd = PVRDMA_CMD_DESTROY_UC;
+	cmd->ctx_handle = context->ctx_handle;
+
+	ret = pvrdma_cmd_post(context->dev, &req, NULL, 0);
+	if (ret < 0)
+		dev_warn(&context->dev->pdev->dev,
+			 "destroy ucontext failed, error: %d\n", ret);
+
+	/* Free the UAR even if the device command failed */
+	pvrdma_uar_free(to_vdev(ibcontext->device), &context->uar);
+}
+
+/**
+ * pvrdma_mmap - create mmap region
+ * @ibcontext: the user context
+ * @vma: the VMA
+ *
+ * @return: 0 on success, otherwise errno.
+ */
+int pvrdma_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
+{
+	struct pvrdma_ucontext *context = to_vucontext(ibcontext);
+	unsigned long start = vma->vm_start;
+	unsigned long size = vma->vm_end - vma->vm_start;
+	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+
+	dev_dbg(&context->dev->pdev->dev, "create mmap region\n");
+
+	if ((size != PAGE_SIZE) || (offset & ~PAGE_MASK)) {
+		dev_warn(&context->dev->pdev->dev,
+			 "invalid params for mmap region\n");
+		return -EINVAL;
+	}
+
+	/* Map UAR to kernel space, VM_LOCKED? */
+	vm_flags_set(vma, VM_DONTCOPY | VM_DONTEXPAND);
+	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+	if (io_remap_pfn_range(vma, start, context->uar.pfn, size,
+			       vma->vm_page_prot))
+		return -EAGAIN;
+
+	return 0;
+}
+
+/**
+ * pvrdma_alloc_pd - allocate protection domain
+ * @ibpd: PD pointer
+ * @udata: user data
+ *
+ * @return: the ib_pd protection domain pointer on success, otherwise errno.
+ */
+int pvrdma_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
+{
+	struct ib_device *ibdev = ibpd->device;
+	struct pvrdma_pd *pd = to_vpd(ibpd);
+	struct pvrdma_dev *dev = to_vdev(ibdev);
+	union pvrdma_cmd_req req = {};
+	union pvrdma_cmd_resp rsp = {};
+	struct pvrdma_cmd_create_pd *cmd = &req.create_pd;
+	struct pvrdma_cmd_create_pd_resp *resp = &rsp.create_pd_resp;
+	struct pvrdma_alloc_pd_resp pd_resp = {0};
+	int ret;
+	struct pvrdma_ucontext *context = rdma_udata_to_drv_context(
+		udata, struct pvrdma_ucontext, ibucontext);
+
+	/* Check allowed max pds */
+	if (!atomic_add_unless(&dev->num_pds, 1, dev->dsr->caps.max_pd))
+		return -ENOMEM;
+
+	cmd->hdr.cmd = PVRDMA_CMD_CREATE_PD;
+	cmd->ctx_handle = context ? context->ctx_handle : 0;
+	ret = pvrdma_cmd_post(dev, &req, &rsp, PVRDMA_CMD_CREATE_PD_RESP);
+	if (ret < 0) {
+		dev_warn(&dev->pdev->dev,
+			 "failed to allocate protection domain, error: %d\n",
+			 ret);
+		goto err;
+	}
+
+	pd->privileged = !udata;
+	pd->pd_handle = resp->pd_handle;
+	pd->pdn = resp->pd_handle;
+	pd_resp.pdn = resp->pd_handle;
+
+	if (udata) {
+		ret = ib_respond_udata(udata, pd_resp);
+		if (ret) {
+			pvrdma_dealloc_pd(&pd->ibpd, udata);
+			return ret;
+		}
+	}
+
+	/* u32 pd handle */
+	return 0;
+
+err:
+	atomic_dec(&dev->num_pds);
+	return ret;
+}
+
+/**
+ * pvrdma_dealloc_pd - deallocate protection domain
+ * @pd: the protection domain to be released
+ * @udata: user data or null for kernel object
+ *
+ * @return: Always 0
+ */
+int pvrdma_dealloc_pd(struct ib_pd *pd, struct ib_udata *udata)
+{
+	struct pvrdma_dev *dev = to_vdev(pd->device);
+	union pvrdma_cmd_req req = {};
+	struct pvrdma_cmd_destroy_pd *cmd = &req.destroy_pd;
+	int ret;
+
+	cmd->hdr.cmd = PVRDMA_CMD_DESTROY_PD;
+	cmd->pd_handle = to_vpd(pd)->pd_handle;
+
+	ret = pvrdma_cmd_post(dev, &req, NULL, 0);
+	if (ret)
+		dev_warn(&dev->pdev->dev,
+			 "could not dealloc protection domain, error: %d\n",
+			 ret);
+
+	atomic_dec(&dev->num_pds);
+	return 0;
+}
+
+/**
+ * pvrdma_create_ah - create an address handle
+ * @ibah: the IB address handle
+ * @init_attr: the attributes of the AH
+ * @udata: pointer to user data
+ *
+ * @return: 0 on success, otherwise errno.
+ */
+int pvrdma_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
+		     struct ib_udata *udata)
+{
+	struct rdma_ah_attr *ah_attr = init_attr->ah_attr;
+	struct pvrdma_dev *dev = to_vdev(ibah->device);
+	struct pvrdma_ah *ah = to_vah(ibah);
+	const struct ib_global_route *grh;
+	u32 port_num = rdma_ah_get_port_num(ah_attr);
+
+	if (!(rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH))
+		return -EINVAL;
+
+	grh = rdma_ah_read_grh(ah_attr);
+	if ((ah_attr->type != RDMA_AH_ATTR_TYPE_ROCE)  ||
+	    rdma_is_multicast_addr((struct in6_addr *)grh->dgid.raw))
+		return -EINVAL;
+
+	if (!atomic_add_unless(&dev->num_ahs, 1, dev->dsr->caps.max_ah))
+		return -ENOMEM;
+
+	ah->av.port_pd = to_vpd(ibah->pd)->pd_handle | (port_num << 24);
+	ah->av.src_path_bits = rdma_ah_get_path_bits(ah_attr);
+	ah->av.src_path_bits |= 0x80;
+	ah->av.gid_index = grh->sgid_index;
+	ah->av.hop_limit = grh->hop_limit;
+	ah->av.sl_tclass_flowlabel = (grh->traffic_class << 20) |
+				      grh->flow_label;
+	memcpy(ah->av.dgid, grh->dgid.raw, 16);
+	memcpy(ah->av.dmac, ah_attr->roce.dmac, ETH_ALEN);
+
+	return 0;
+}
+
+/**
+ * pvrdma_destroy_ah - destroy an address handle
+ * @ah: the address handle to destroyed
+ * @flags: destroy address handle flags (see enum rdma_destroy_ah_flags)
+ *
+ */
+int pvrdma_destroy_ah(struct ib_ah *ah, u32 flags)
+{
+	struct pvrdma_dev *dev = to_vdev(ah->device);
+
+	atomic_dec(&dev->num_ahs);
+	return 0;
+}

linux-7.2.3/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.h

@@ -0,0 +1,404 @@
+/*
+ * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of EITHER the GNU General Public License
+ * version 2 as published by the Free Software Foundation or the BSD
+ * 2-Clause License. This program is distributed in the hope that it
+ * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
+ * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License version 2 for more details at
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program available in the file COPYING in the main
+ * directory of this source tree.
+ *
+ * The BSD 2-Clause License
+ *
+ *     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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __PVRDMA_VERBS_H__
+#define __PVRDMA_VERBS_H__
+
+#include <linux/types.h>
+
+union pvrdma_gid {
+	u8	raw[16];
+	struct {
+		__be64	subnet_prefix;
+		__be64	interface_id;
+	} global;
+};
+
+enum pvrdma_link_layer {
+	PVRDMA_LINK_LAYER_UNSPECIFIED,
+	PVRDMA_LINK_LAYER_INFINIBAND,
+	PVRDMA_LINK_LAYER_ETHERNET,
+};
+
+enum pvrdma_mtu {
+	PVRDMA_MTU_256  = 1,
+	PVRDMA_MTU_512  = 2,
+	PVRDMA_MTU_1024 = 3,
+	PVRDMA_MTU_2048 = 4,
+	PVRDMA_MTU_4096 = 5,
+};
+
+enum pvrdma_port_state {
+	PVRDMA_PORT_NOP			= 0,
+	PVRDMA_PORT_DOWN		= 1,
+	PVRDMA_PORT_INIT		= 2,
+	PVRDMA_PORT_ARMED		= 3,
+	PVRDMA_PORT_ACTIVE		= 4,
+	PVRDMA_PORT_ACTIVE_DEFER	= 5,
+};
+
+enum pvrdma_port_cap_flags {
+	PVRDMA_PORT_SM				= 1 <<  1,
+	PVRDMA_PORT_NOTICE_SUP			= 1 <<  2,
+	PVRDMA_PORT_TRAP_SUP			= 1 <<  3,
+	PVRDMA_PORT_OPT_IPD_SUP			= 1 <<  4,
+	PVRDMA_PORT_AUTO_MIGR_SUP		= 1 <<  5,
+	PVRDMA_PORT_SL_MAP_SUP			= 1 <<  6,
+	PVRDMA_PORT_MKEY_NVRAM			= 1 <<  7,
+	PVRDMA_PORT_PKEY_NVRAM			= 1 <<  8,
+	PVRDMA_PORT_LED_INFO_SUP		= 1 <<  9,
+	PVRDMA_PORT_SM_DISABLED			= 1 << 10,
+	PVRDMA_PORT_SYS_IMAGE_GUID_SUP		= 1 << 11,
+	PVRDMA_PORT_PKEY_SW_EXT_PORT_TRAP_SUP	= 1 << 12,
+	PVRDMA_PORT_EXTENDED_SPEEDS_SUP		= 1 << 14,
+	PVRDMA_PORT_CM_SUP			= 1 << 16,
+	PVRDMA_PORT_SNMP_TUNNEL_SUP		= 1 << 17,
+	PVRDMA_PORT_REINIT_SUP			= 1 << 18,
+	PVRDMA_PORT_DEVICE_MGMT_SUP		= 1 << 19,
+	PVRDMA_PORT_VENDOR_CLASS_SUP		= 1 << 20,
+	PVRDMA_PORT_DR_NOTICE_SUP		= 1 << 21,
+	PVRDMA_PORT_CAP_MASK_NOTICE_SUP		= 1 << 22,
+	PVRDMA_PORT_BOOT_MGMT_SUP		= 1 << 23,
+	PVRDMA_PORT_LINK_LATENCY_SUP		= 1 << 24,
+	PVRDMA_PORT_CLIENT_REG_SUP		= 1 << 25,
+	PVRDMA_PORT_IP_BASED_GIDS		= 1 << 26,
+	PVRDMA_PORT_CAP_FLAGS_MAX		= PVRDMA_PORT_IP_BASED_GIDS,
+};
+
+enum pvrdma_port_width {
+	PVRDMA_WIDTH_1X		= 1,
+	PVRDMA_WIDTH_4X		= 2,
+	PVRDMA_WIDTH_8X		= 4,
+	PVRDMA_WIDTH_12X	= 8,
+};
+
+enum pvrdma_port_speed {
+	PVRDMA_SPEED_SDR	= 1,
+	PVRDMA_SPEED_DDR	= 2,
+	PVRDMA_SPEED_QDR	= 4,
+	PVRDMA_SPEED_FDR10	= 8,
+	PVRDMA_SPEED_FDR	= 16,
+	PVRDMA_SPEED_EDR	= 32,
+};
+
+struct pvrdma_port_attr {
+	enum pvrdma_port_state	state;
+	enum pvrdma_mtu		max_mtu;
+	enum pvrdma_mtu		active_mtu;
+	u32			gid_tbl_len;
+	u32			port_cap_flags;
+	u32			max_msg_sz;
+	u32			bad_pkey_cntr;
+	u32			qkey_viol_cntr;
+	u16			pkey_tbl_len;
+	u16			lid;
+	u16			sm_lid;
+	u8			lmc;
+	u8			max_vl_num;
+	u8			sm_sl;
+	u8			subnet_timeout;
+	u8			init_type_reply;
+	u8			active_width;
+	u8			active_speed;
+	u8			phys_state;
+	u8			reserved[2];
+};
+
+struct pvrdma_global_route {
+	union pvrdma_gid	dgid;
+	u32			flow_label;
+	u8			sgid_index;
+	u8			hop_limit;
+	u8			traffic_class;
+	u8			reserved;
+};
+
+struct pvrdma_grh {
+	__be32			version_tclass_flow;
+	__be16			paylen;
+	u8			next_hdr;
+	u8			hop_limit;
+	union pvrdma_gid	sgid;
+	union pvrdma_gid	dgid;
+};
+
+enum pvrdma_ah_flags {
+	PVRDMA_AH_GRH = 1,
+};
+
+enum pvrdma_rate {
+	PVRDMA_RATE_PORT_CURRENT	= 0,
+	PVRDMA_RATE_2_5_GBPS		= 2,
+	PVRDMA_RATE_5_GBPS		= 5,
+	PVRDMA_RATE_10_GBPS		= 3,
+	PVRDMA_RATE_20_GBPS		= 6,
+	PVRDMA_RATE_30_GBPS		= 4,
+	PVRDMA_RATE_40_GBPS		= 7,
+	PVRDMA_RATE_60_GBPS		= 8,
+	PVRDMA_RATE_80_GBPS		= 9,
+	PVRDMA_RATE_120_GBPS		= 10,
+	PVRDMA_RATE_14_GBPS		= 11,
+	PVRDMA_RATE_56_GBPS		= 12,
+	PVRDMA_RATE_112_GBPS		= 13,
+	PVRDMA_RATE_168_GBPS		= 14,
+	PVRDMA_RATE_25_GBPS		= 15,
+	PVRDMA_RATE_100_GBPS		= 16,
+	PVRDMA_RATE_200_GBPS		= 17,
+	PVRDMA_RATE_300_GBPS		= 18,
+};
+
+struct pvrdma_ah_attr {
+	struct pvrdma_global_route	grh;
+	u16				dlid;
+	u16				vlan_id;
+	u8				sl;
+	u8				src_path_bits;
+	u8				static_rate;
+	u8				ah_flags;
+	u8				port_num;
+	u8				dmac[6];
+	u8				reserved;
+};
+
+enum pvrdma_cq_notify_flags {
+	PVRDMA_CQ_SOLICITED		= 1 << 0,
+	PVRDMA_CQ_NEXT_COMP		= 1 << 1,
+	PVRDMA_CQ_SOLICITED_MASK	= PVRDMA_CQ_SOLICITED |
+					  PVRDMA_CQ_NEXT_COMP,
+	PVRDMA_CQ_REPORT_MISSED_EVENTS	= 1 << 2,
+};
+
+struct pvrdma_qp_cap {
+	u32	max_send_wr;
+	u32	max_recv_wr;
+	u32	max_send_sge;
+	u32	max_recv_sge;
+	u32	max_inline_data;
+	u32	reserved;
+};
+
+enum pvrdma_sig_type {
+	PVRDMA_SIGNAL_ALL_WR,
+	PVRDMA_SIGNAL_REQ_WR,
+};
+
+enum pvrdma_qp_type {
+	PVRDMA_QPT_SMI,
+	PVRDMA_QPT_GSI,
+	PVRDMA_QPT_RC,
+	PVRDMA_QPT_UC,
+	PVRDMA_QPT_UD,
+	PVRDMA_QPT_RAW_IPV6,
+	PVRDMA_QPT_RAW_ETHERTYPE,
+	PVRDMA_QPT_RAW_PACKET = 8,
+	PVRDMA_QPT_XRC_INI = 9,
+	PVRDMA_QPT_XRC_TGT,
+	PVRDMA_QPT_MAX,
+};
+
+enum pvrdma_qp_create_flags {
+	PVRDMA_QP_CREATE_IPOPVRDMA_UD_LSO		= 1 << 0,
+	PVRDMA_QP_CREATE_BLOCK_MULTICAST_LOOPBACK	= 1 << 1,
+};
+
+enum pvrdma_qp_attr_mask {
+	PVRDMA_QP_STATE			= 1 << 0,
+	PVRDMA_QP_CUR_STATE		= 1 << 1,
+	PVRDMA_QP_EN_SQD_ASYNC_NOTIFY	= 1 << 2,
+	PVRDMA_QP_ACCESS_FLAGS		= 1 << 3,
+	PVRDMA_QP_PKEY_INDEX		= 1 << 4,
+	PVRDMA_QP_PORT			= 1 << 5,
+	PVRDMA_QP_QKEY			= 1 << 6,
+	PVRDMA_QP_AV			= 1 << 7,
+	PVRDMA_QP_PATH_MTU		= 1 << 8,
+	PVRDMA_QP_TIMEOUT		= 1 << 9,
+	PVRDMA_QP_RETRY_CNT		= 1 << 10,
+	PVRDMA_QP_RNR_RETRY		= 1 << 11,
+	PVRDMA_QP_RQ_PSN		= 1 << 12,
+	PVRDMA_QP_MAX_QP_RD_ATOMIC	= 1 << 13,
+	PVRDMA_QP_ALT_PATH		= 1 << 14,
+	PVRDMA_QP_MIN_RNR_TIMER		= 1 << 15,
+	PVRDMA_QP_SQ_PSN		= 1 << 16,
+	PVRDMA_QP_MAX_DEST_RD_ATOMIC	= 1 << 17,
+	PVRDMA_QP_PATH_MIG_STATE	= 1 << 18,
+	PVRDMA_QP_CAP			= 1 << 19,
+	PVRDMA_QP_DEST_QPN		= 1 << 20,
+	PVRDMA_QP_ATTR_MASK_MAX		= PVRDMA_QP_DEST_QPN,
+};
+
+enum pvrdma_qp_state {
+	PVRDMA_QPS_RESET,
+	PVRDMA_QPS_INIT,
+	PVRDMA_QPS_RTR,
+	PVRDMA_QPS_RTS,
+	PVRDMA_QPS_SQD,
+	PVRDMA_QPS_SQE,
+	PVRDMA_QPS_ERR,
+};
+
+enum pvrdma_mig_state {
+	PVRDMA_MIG_MIGRATED,
+	PVRDMA_MIG_REARM,
+	PVRDMA_MIG_ARMED,
+};
+
+enum pvrdma_mw_type {
+	PVRDMA_MW_TYPE_1 = 1,
+	PVRDMA_MW_TYPE_2 = 2,
+};
+
+struct pvrdma_srq_attr {
+	u32			max_wr;
+	u32			max_sge;
+	u32			srq_limit;
+	u32			reserved;
+};
+
+struct pvrdma_qp_attr {
+	enum pvrdma_qp_state	qp_state;
+	enum pvrdma_qp_state	cur_qp_state;
+	enum pvrdma_mtu		path_mtu;
+	enum pvrdma_mig_state	path_mig_state;
+	u32			qkey;
+	u32			rq_psn;
+	u32			sq_psn;
+	u32			dest_qp_num;
+	u32			qp_access_flags;
+	u16			pkey_index;
+	u16			alt_pkey_index;
+	u8			en_sqd_async_notify;
+	u8			sq_draining;
+	u8			max_rd_atomic;
+	u8			max_dest_rd_atomic;
+	u8			min_rnr_timer;
+	u8			port_num;
+	u8			timeout;
+	u8			retry_cnt;
+	u8			rnr_retry;
+	u8			alt_port_num;
+	u8			alt_timeout;
+	u8			reserved[5];
+	struct pvrdma_qp_cap	cap;
+	struct pvrdma_ah_attr	ah_attr;
+	struct pvrdma_ah_attr	alt_ah_attr;
+};
+
+enum pvrdma_send_flags {
+	PVRDMA_SEND_FENCE	= 1 << 0,
+	PVRDMA_SEND_SIGNALED	= 1 << 1,
+	PVRDMA_SEND_SOLICITED	= 1 << 2,
+	PVRDMA_SEND_INLINE	= 1 << 3,
+	PVRDMA_SEND_IP_CSUM	= 1 << 4,
+	PVRDMA_SEND_FLAGS_MAX	= PVRDMA_SEND_IP_CSUM,
+};
+
+enum pvrdma_access_flags {
+	PVRDMA_ACCESS_LOCAL_WRITE	= 1 << 0,
+	PVRDMA_ACCESS_REMOTE_WRITE	= 1 << 1,
+	PVRDMA_ACCESS_REMOTE_READ	= 1 << 2,
+	PVRDMA_ACCESS_REMOTE_ATOMIC	= 1 << 3,
+	PVRDMA_ACCESS_MW_BIND		= 1 << 4,
+	PVRDMA_ZERO_BASED		= 1 << 5,
+	PVRDMA_ACCESS_ON_DEMAND		= 1 << 6,
+	PVRDMA_ACCESS_FLAGS_MAX		= PVRDMA_ACCESS_ON_DEMAND,
+};
+
+int pvrdma_query_device(struct ib_device *ibdev,
+			struct ib_device_attr *props,
+			struct ib_udata *udata);
+int pvrdma_query_port(struct ib_device *ibdev, u32 port,
+		      struct ib_port_attr *props);
+int pvrdma_query_gid(struct ib_device *ibdev, u32 port,
+		     int index, union ib_gid *gid);
+int pvrdma_query_pkey(struct ib_device *ibdev, u32 port,
+		      u16 index, u16 *pkey);
+enum rdma_link_layer pvrdma_port_link_layer(struct ib_device *ibdev,
+					    u32 port);
+int pvrdma_modify_port(struct ib_device *ibdev, u32 port,
+		       int mask, struct ib_port_modify *props);
+int pvrdma_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
+int pvrdma_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata);
+void pvrdma_dealloc_ucontext(struct ib_ucontext *context);
+int pvrdma_alloc_pd(struct ib_pd *pd, struct ib_udata *udata);
+int pvrdma_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata);
+struct ib_mr *pvrdma_get_dma_mr(struct ib_pd *pd, int acc);
+struct ib_mr *pvrdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+				 u64 virt_addr, int access_flags,
+				 struct ib_dmah *dmah,
+				 struct ib_udata *udata);
+int pvrdma_dereg_mr(struct ib_mr *mr, struct ib_udata *udata);
+struct ib_mr *pvrdma_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
+			      u32 max_num_sg);
+int pvrdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
+		     int sg_nents, unsigned int *sg_offset);
+int pvrdma_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
+		     struct uverbs_attr_bundle *attrs);
+int pvrdma_destroy_cq(struct ib_cq *cq, struct ib_udata *udata);
+int pvrdma_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
+int pvrdma_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
+int pvrdma_create_ah(struct ib_ah *ah, struct rdma_ah_init_attr *init_attr,
+		     struct ib_udata *udata);
+int pvrdma_destroy_ah(struct ib_ah *ah, u32 flags);
+
+int pvrdma_create_srq(struct ib_srq *srq, struct ib_srq_init_attr *init_attr,
+		      struct ib_udata *udata);
+int pvrdma_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
+		      enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
+int pvrdma_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
+int pvrdma_destroy_srq(struct ib_srq *srq, struct ib_udata *udata);
+
+int pvrdma_create_qp(struct ib_qp *qp, struct ib_qp_init_attr *init_attr,
+		     struct ib_udata *udata);
+int pvrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+		     int attr_mask, struct ib_udata *udata);
+int pvrdma_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
+		    int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr);
+int pvrdma_destroy_qp(struct ib_qp *qp, struct ib_udata *udata);
+int pvrdma_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
+		     const struct ib_send_wr **bad_wr);
+int pvrdma_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
+		     const struct ib_recv_wr **bad_wr);
+
+#endif /* __PVRDMA_VERBS_H__ */