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 "qemu/notify.h"
  21 #include "hw/pci/pci.h"
  22 #include "hw/pci/msix.h"
  23 #include "chardev/char-fe.h"
  24 #include "hw/net/vmxnet3_defs.h"
  25
  26 #include "../rdma_backend_defs.h"
  27 #include "../rdma_rm_defs.h"
  28
  29 #include "standard-headers/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h"
  30 #include "standard-headers/drivers/infiniband/hw/vmw_pvrdma/pvrdma_dev_api.h"
  31 #include "pvrdma_dev_ring.h"
  32
  33 /* BARs */
  34 #define RDMA_MSIX_BAR_IDX    0
  35 #define RDMA_REG_BAR_IDX     1
  36 #define RDMA_UAR_BAR_IDX     2
  37 #define RDMA_BAR0_MSIX_SIZE  (16 * KiB)
  38 #define RDMA_BAR1_REGS_SIZE  64
  39 #define RDMA_BAR2_UAR_SIZE   (0x1000 * MAX_UCS) /* each uc gets page */
  40
  41 /* MSIX */
  42 #define RDMA_MAX_INTRS       3
  43 #define RDMA_MSIX_TABLE      0x0000
  44 #define RDMA_MSIX_PBA        0x2000
  45
  46 /* Interrupts Vectors */
  47 #define INTR_VEC_CMD_RING            0
  48 #define INTR_VEC_CMD_ASYNC_EVENTS    1
  49 #define INTR_VEC_CMD_COMPLETION_Q    2
  50
  51 /* HW attributes */
  52 #define PVRDMA_HW_NAME       "pvrdma"
  53 #define PVRDMA_HW_VERSION    17
  54 #define PVRDMA_FW_VERSION    14
  55
  56 /* Some defaults */
  57 #define PVRDMA_PKEY          0xFFFF
  58
  59 typedef struct DSRInfo {
  60     dma_addr_t dma;
  61     struct pvrdma_device_shared_region *dsr;
  62
  63     union pvrdma_cmd_req *req;
  64     union pvrdma_cmd_resp *rsp;
  65
  66     struct pvrdma_ring *async_ring_state;
  67     PvrdmaRing async;
  68
  69     struct pvrdma_ring *cq_ring_state;
  70     PvrdmaRing cq;
  71 } DSRInfo;
  72
  73 typedef struct PVRDMADevStats {
  74     uint64_t commands;
  75     uint64_t regs_reads;
  76     uint64_t regs_writes;
  77     uint64_t uar_writes;
  78     uint64_t interrupts;
  79 } PVRDMADevStats;
  80
  81 typedef struct PVRDMADev {
  82     PCIDevice parent_obj;
  83     MemoryRegion msix;
  84     MemoryRegion regs;
  85     uint32_t regs_data[RDMA_BAR1_REGS_SIZE];
  86     MemoryRegion uar;
  87     uint32_t uar_data[RDMA_BAR2_UAR_SIZE];
  88     DSRInfo dsr_info;
  89     int interrupt_mask;
  90     struct ibv_device_attr dev_attr;
  91     uint64_t node_guid;
  92     char *backend_eth_device_name;
  93     char *backend_device_name;
  94     uint8_t backend_port_num;
  95     RdmaBackendDev backend_dev;
  96     RdmaDeviceResources rdma_dev_res;
  97     CharBackend mad_chr;
  98     VMXNET3State *func0;
  99     Notifier shutdown_notifier;
 100     PVRDMADevStats stats;
 101 } PVRDMADev;
 102 #define PVRDMA_DEV(dev) OBJECT_CHECK(PVRDMADev, (dev), PVRDMA_HW_NAME)
 103
 104 static inline int get_reg_val(PVRDMADev *dev, hwaddr addr, uint32_t *val)
 105 {
 106     int idx = addr >> 2;
 107
 108     if (idx >= RDMA_BAR1_REGS_SIZE) {
 109         return -EINVAL;
 110     }
 111
 112     *val = dev->regs_data[idx];
 113
 114     return 0;
 115 }
 116
 117 static inline int set_reg_val(PVRDMADev *dev, hwaddr addr, uint32_t val)
 118 {
 119     int idx = addr >> 2;
 120
 121     if (idx >= RDMA_BAR1_REGS_SIZE) {
 122         return -EINVAL;
 123     }
 124
 125     dev->regs_data[idx] = val;
 126
 127     return 0;
 128 }
 129
 130 static inline void post_interrupt(PVRDMADev *dev, unsigned vector)
 131 {
 132     PCIDevice *pci_dev = PCI_DEVICE(dev);
 133
 134     if (likely(!dev->interrupt_mask)) {
 135         dev->stats.interrupts++;
 136         msix_notify(pci_dev, vector);
 137     }
 138 }
 139
 140 int pvrdma_exec_cmd(PVRDMADev *dev);
 141
 142 #endif