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 PVRDMADev { 74 PCIDevice parent_obj; 75 MemoryRegion msix; 76 MemoryRegion regs; 77 uint32_t regs_data[RDMA_BAR1_REGS_SIZE]; 78 MemoryRegion uar; 79 uint32_t uar_data[RDMA_BAR2_UAR_SIZE]; 80 DSRInfo dsr_info; 81 int interrupt_mask; 82 struct ibv_device_attr dev_attr; 83 uint64_t node_guid; 84 char *backend_eth_device_name; 85 char *backend_device_name; 86 uint8_t backend_port_num; 87 RdmaBackendDev backend_dev; 88 RdmaDeviceResources rdma_dev_res; 89 CharBackend mad_chr; 90 VMXNET3State *func0; 91 Notifier shutdown_notifier; 92 } PVRDMADev; 93 #define PVRDMA_DEV(dev) OBJECT_CHECK(PVRDMADev, (dev), PVRDMA_HW_NAME) 94 95 static inline int get_reg_val(PVRDMADev *dev, hwaddr addr, uint32_t *val) 96 { 97 int idx = addr >> 2; 98 99 if (idx >= RDMA_BAR1_REGS_SIZE) { 100 return -EINVAL; 101 } 102 103 *val = dev->regs_data[idx]; 104 105 return 0; 106 } 107 108 static inline int set_reg_val(PVRDMADev *dev, hwaddr addr, uint32_t val) 109 { 110 int idx = addr >> 2; 111 112 if (idx >= RDMA_BAR1_REGS_SIZE) { 113 return -EINVAL; 114 } 115 116 dev->regs_data[idx] = val; 117 118 return 0; 119 } 120 121 static inline void post_interrupt(PVRDMADev *dev, unsigned vector) 122 { 123 PCIDevice *pci_dev = PCI_DEVICE(dev); 124 125 if (likely(!dev->interrupt_mask)) { 126 msix_notify(pci_dev, vector); 127 } 128 } 129 130 int execute_command(PVRDMADev *dev); 131 132 #endif 133