LXR qemu/hw/rdma/vmw/pvrdma.h

   1/*
   2 * QEMU VMWARE paravirtual RDMA device definitions
   3 *
   4 * Copyright (C) 2018 Oracle
   5 * Copyright (C) 2018 Red Hat Inc
   6 *
   7 * Authors:
   8 *     Yuval Shaia <yuval.shaia@oracle.com>
   9 *     Marcel Apfelbaum <marcel@redhat.com>
  10 *
  11 * This work is licensed under the terms of the GNU GPL, version 2 or later.
  12 * See the COPYING file in the top-level directory.
  13 *
  14 */
  15
  16#ifndef PVRDMA_PVRDMA_H
  17#define PVRDMA_PVRDMA_H
  18
  19#include "qemu/units.h"
  20#include "hw/pci/pci.h"
  21#include "hw/pci/msix.h"
  22
  23#include "../rdma_backend_defs.h"
  24#include "../rdma_rm_defs.h"
  25
  26#include "standard-headers/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h"
  27#include "standard-headers/drivers/infiniband/hw/vmw_pvrdma/pvrdma_dev_api.h"
  28#include "pvrdma_dev_ring.h"
  29
  30/* BARs */
  31#define RDMA_MSIX_BAR_IDX    0
  32#define RDMA_REG_BAR_IDX     1
  33#define RDMA_UAR_BAR_IDX     2
  34#define RDMA_BAR0_MSIX_SIZE  (16 * KiB)
  35#define RDMA_BAR1_REGS_SIZE  64
  36#define RDMA_BAR2_UAR_SIZE   (0x1000 * MAX_UCS) /* each uc gets page */
  37
  38/* MSIX */
  39#define RDMA_MAX_INTRS       3
  40#define RDMA_MSIX_TABLE      0x0000
  41#define RDMA_MSIX_PBA        0x2000
  42
  43/* Interrupts Vectors */
  44#define INTR_VEC_CMD_RING            0
  45#define INTR_VEC_CMD_ASYNC_EVENTS    1
  46#define INTR_VEC_CMD_COMPLETION_Q    2
  47
  48/* HW attributes */
  49#define PVRDMA_HW_NAME       "pvrdma"
  50#define PVRDMA_HW_VERSION    17
  51#define PVRDMA_FW_VERSION    14
  52
  53typedef struct DSRInfo {
  54    dma_addr_t dma;
  55    struct pvrdma_device_shared_region *dsr;
  56
  57    union pvrdma_cmd_req *req;
  58    union pvrdma_cmd_resp *rsp;
  59
  60    struct pvrdma_ring *async_ring_state;
  61    PvrdmaRing async;
  62
  63    struct pvrdma_ring *cq_ring_state;
  64    PvrdmaRing cq;
  65} DSRInfo;
  66
  67typedef struct PVRDMADev {
  68    PCIDevice parent_obj;
  69    MemoryRegion msix;
  70    MemoryRegion regs;
  71    uint32_t regs_data[RDMA_BAR1_REGS_SIZE];
  72    MemoryRegion uar;
  73    uint32_t uar_data[RDMA_BAR2_UAR_SIZE];
  74    DSRInfo dsr_info;
  75    int interrupt_mask;
  76    struct ibv_device_attr dev_attr;
  77    uint64_t node_guid;
  78    char *backend_device_name;
  79    uint8_t backend_gid_idx;
  80    uint8_t backend_port_num;
  81    RdmaBackendDev backend_dev;
  82    RdmaDeviceResources rdma_dev_res;
  83} PVRDMADev;
  84#define PVRDMA_DEV(dev) OBJECT_CHECK(PVRDMADev, (dev), PVRDMA_HW_NAME)
  85
  86static inline int get_reg_val(PVRDMADev *dev, hwaddr addr, uint32_t *val)
  87{
  88    int idx = addr >> 2;
  89
  90    if (idx >= RDMA_BAR1_REGS_SIZE) {
  91        return -EINVAL;
  92    }
  93
  94    *val = dev->regs_data[idx];
  95
  96    return 0;
  97}
  98
  99static inline int set_reg_val(PVRDMADev *dev, hwaddr addr, uint32_t val)
 100{
 101    int idx = addr >> 2;
 102
 103    if (idx >= RDMA_BAR1_REGS_SIZE) {
 104        return -EINVAL;
 105    }
 106
 107    dev->regs_data[idx] = val;
 108
 109    return 0;
 110}
 111
 112static inline void post_interrupt(PVRDMADev *dev, unsigned vector)
 113{
 114    PCIDevice *pci_dev = PCI_DEVICE(dev);
 115
 116    if (likely(!dev->interrupt_mask)) {
 117        msix_notify(pci_dev, vector);
 118    }
 119}
 120
 121int execute_command(PVRDMADev *dev);
 122
 123#endif
 124