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/*
* QEMU VMWARE paravirtual RDMA device definitions
*
* Copyright (C) 2018 Oracle
* Copyright (C) 2018 Red Hat Inc
*
* Authors:
* Yuval Shaia <yuval.shaia@oracle.com>
* Marcel Apfelbaum <marcel@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef PVRDMA_PVRDMA_H
#define PVRDMA_PVRDMA_H
#include "qemu/units.h"
#include "qemu/notify.h"
#include "hw/pci/pci.h"
#include "hw/pci/msix.h"
#include "chardev/char-fe.h"
#include "hw/net/vmxnet3_defs.h"
#include "../rdma_backend_defs.h"
#include "../rdma_rm_defs.h"
#include "standard-headers/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h"
#include "standard-headers/drivers/infiniband/hw/vmw_pvrdma/pvrdma_dev_api.h"
#include "pvrdma_dev_ring.h"
/* BARs */
#define RDMA_MSIX_BAR_IDX 0
#define RDMA_REG_BAR_IDX 1
#define RDMA_UAR_BAR_IDX 2
#define RDMA_BAR0_MSIX_SIZE (16 * KiB)
#define RDMA_BAR1_REGS_SIZE 64
#define RDMA_BAR2_UAR_SIZE (0x1000 * MAX_UCS) /* each uc gets page */
/* MSIX */
#define RDMA_MAX_INTRS 3
#define RDMA_MSIX_TABLE 0x0000
#define RDMA_MSIX_PBA 0x2000
/* Interrupts Vectors */
#define INTR_VEC_CMD_RING 0
#define INTR_VEC_CMD_ASYNC_EVENTS 1
#define INTR_VEC_CMD_COMPLETION_Q 2
/* HW attributes */
#define PVRDMA_HW_NAME "pvrdma"
#define PVRDMA_HW_VERSION 17
#define PVRDMA_FW_VERSION 14
/* Some defaults */
#define PVRDMA_PKEY 0xFFFF
typedef struct DSRInfo {
dma_addr_t dma;
struct pvrdma_device_shared_region *dsr;
union pvrdma_cmd_req *req;
union pvrdma_cmd_resp *rsp;
struct pvrdma_ring *async_ring_state;
PvrdmaRing async;
struct pvrdma_ring *cq_ring_state;
PvrdmaRing cq;
} DSRInfo;
typedef struct PVRDMADevStats {
uint64_t commands;
uint64_t regs_reads;
uint64_t regs_writes;
uint64_t uar_writes;
uint64_t interrupts;
} PVRDMADevStats;
typedef struct PVRDMADev {
PCIDevice parent_obj;
MemoryRegion msix;
MemoryRegion regs;
uint32_t regs_data[RDMA_BAR1_REGS_SIZE];
MemoryRegion uar;
uint32_t uar_data[RDMA_BAR2_UAR_SIZE];
DSRInfo dsr_info;
int interrupt_mask;
struct ibv_device_attr dev_attr;
uint64_t node_guid;
char *backend_eth_device_name;
char *backend_device_name;
uint8_t backend_port_num;
RdmaBackendDev backend_dev;
RdmaDeviceResources rdma_dev_res;
CharBackend mad_chr;
VMXNET3State *func0;
Notifier shutdown_notifier;
PVRDMADevStats stats;
} PVRDMADev;
#define PVRDMA_DEV(dev) OBJECT_CHECK(PVRDMADev, (dev), PVRDMA_HW_NAME)
static inline int get_reg_val(PVRDMADev *dev, hwaddr addr, uint32_t *val)
{
int idx = addr >> 2;
if (idx >= RDMA_BAR1_REGS_SIZE) {
return -EINVAL;
}
*val = dev->regs_data[idx];
return 0;
}
static inline int set_reg_val(PVRDMADev *dev, hwaddr addr, uint32_t val)
{
int idx = addr >> 2;
if (idx >= RDMA_BAR1_REGS_SIZE) {
return -EINVAL;
}
dev->regs_data[idx] = val;
return 0;
}
static inline void post_interrupt(PVRDMADev *dev, unsigned vector)
{
PCIDevice *pci_dev = PCI_DEVICE(dev);
if (likely(!dev->interrupt_mask)) {
dev->stats.interrupts++;
msix_notify(pci_dev, vector);
}
}
int pvrdma_exec_cmd(PVRDMADev *dev);
#endif
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