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
  53 /* Some defaults */
  54 #define PVRDMA_PKEY          0x7FFF
  55
  56 typedef struct DSRInfo {
  57     dma_addr_t dma;
  58     struct pvrdma_device_shared_region *dsr;
  59
  60     union pvrdma_cmd_req *req;
  61     union pvrdma_cmd_resp *rsp;
  62
  63     struct pvrdma_ring *async_ring_state;
  64     PvrdmaRing async;
  65
  66     struct pvrdma_ring *cq_ring_state;
  67     PvrdmaRing cq;
  68 } DSRInfo;
  69
  70 typedef struct PVRDMADev {
  71     PCIDevice parent_obj;
  72     MemoryRegion msix;
  73     MemoryRegion regs;
  74     uint32_t regs_data[RDMA_BAR1_REGS_SIZE];
  75     MemoryRegion uar;
  76     uint32_t uar_data[RDMA_BAR2_UAR_SIZE];
  77     DSRInfo dsr_info;
  78     int interrupt_mask;
  79     struct ibv_device_attr dev_attr;
  80     uint64_t node_guid;
  81     char *backend_device_name;
  82     uint8_t backend_gid_idx;
  83     uint8_t backend_port_num;
  84     RdmaBackendDev backend_dev;
  85     RdmaDeviceResources rdma_dev_res;
  86 } PVRDMADev;
  87 #define PVRDMA_DEV(dev) OBJECT_CHECK(PVRDMADev, (dev), PVRDMA_HW_NAME)
  88
  89 static inline int get_reg_val(PVRDMADev *dev, hwaddr addr, uint32_t *val)
  90 {
  91     int idx = addr >> 2;
  92
  93     if (idx >= RDMA_BAR1_REGS_SIZE) {
  94         return -EINVAL;
  95     }
  96
  97     *val = dev->regs_data[idx];
  98
  99     return 0;
 100 }
 101
 102 static inline int set_reg_val(PVRDMADev *dev, hwaddr addr, uint32_t val)
 103 {
 104     int idx = addr >> 2;
 105
 106     if (idx >= RDMA_BAR1_REGS_SIZE) {
 107         return -EINVAL;
 108     }
 109
 110     dev->regs_data[idx] = val;
 111
 112     return 0;
 113 }
 114
 115 static inline void post_interrupt(PVRDMADev *dev, unsigned vector)
 116 {
 117     PCIDevice *pci_dev = PCI_DEVICE(dev);
 118
 119     if (likely(!dev->interrupt_mask)) {
 120         msix_notify(pci_dev, vector);
 121     }
 122 }
 123
 124 int execute_command(PVRDMADev *dev);
 125
 126 #endif