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hw/rdma: Add wrappers and macros
As all mapping for this device are from driver to device, declare wrappers on top of pci_dma_*map functions. In addition, declare macros to be used for debug messages. Reviewed-by: Dotan Barak <dotanb@mellanox.com> Reviewed-by: Zhu Yanjun <yanjun.zhu@oracle.com> Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
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@ -18,6 +18,7 @@ devices-dirs-$(CONFIG_IPMI) += ipmi/
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devices-dirs-$(CONFIG_SOFTMMU) += isa/
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devices-dirs-$(CONFIG_SOFTMMU) += misc/
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devices-dirs-$(CONFIG_SOFTMMU) += net/
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devices-dirs-$(CONFIG_SOFTMMU) += rdma/
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devices-dirs-$(CONFIG_SOFTMMU) += nvram/
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devices-dirs-$(CONFIG_SOFTMMU) += pci/
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devices-dirs-$(CONFIG_PCI) += pci-bridge/ pci-host/
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3
hw/rdma/Makefile.objs
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3
hw/rdma/Makefile.objs
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@ -0,0 +1,3 @@
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ifeq ($(CONFIG_RDMA),y)
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obj-$(CONFIG_PCI) += rdma_utils.o
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endif
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51
hw/rdma/rdma_utils.c
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51
hw/rdma/rdma_utils.c
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@ -0,0 +1,51 @@
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/*
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* QEMU paravirtual RDMA - Generic RDMA backend
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*
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* Copyright (C) 2018 Oracle
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* Copyright (C) 2018 Red Hat Inc
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*
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* Authors:
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* Yuval Shaia <yuval.shaia@oracle.com>
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* Marcel Apfelbaum <marcel@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "rdma_utils.h"
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void *rdma_pci_dma_map(PCIDevice *dev, dma_addr_t addr, dma_addr_t plen)
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{
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void *p;
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hwaddr len = plen;
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if (!addr) {
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pr_dbg("addr is NULL\n");
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return NULL;
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}
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p = pci_dma_map(dev, addr, &len, DMA_DIRECTION_TO_DEVICE);
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if (!p) {
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pr_dbg("Fail in pci_dma_map, addr=0x%llx, len=%ld\n",
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(long long unsigned int)addr, len);
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return NULL;
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}
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if (len != plen) {
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rdma_pci_dma_unmap(dev, p, len);
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return NULL;
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}
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pr_dbg("0x%llx -> %p (len=%ld)\n", (long long unsigned int)addr, p, len);
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return p;
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}
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void rdma_pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len)
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{
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pr_dbg("%p\n", buffer);
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if (buffer) {
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pci_dma_unmap(dev, buffer, len, DMA_DIRECTION_TO_DEVICE, 0);
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}
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}
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43
hw/rdma/rdma_utils.h
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43
hw/rdma/rdma_utils.h
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@ -0,0 +1,43 @@
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/*
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* RDMA device: Debug utilities
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*
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* Copyright (C) 2018 Oracle
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* Copyright (C) 2018 Red Hat Inc
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*
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*
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* Authors:
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* Yuval Shaia <yuval.shaia@oracle.com>
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* Marcel Apfelbaum <marcel@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef RDMA_UTILS_H
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#define RDMA_UTILS_H
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#include <qemu/osdep.h>
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#include <include/hw/pci/pci.h>
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#include <include/sysemu/dma.h>
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#define pr_info(fmt, ...) \
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fprintf(stdout, "%s: %-20s (%3d): " fmt, "pvrdma", __func__, __LINE__,\
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## __VA_ARGS__)
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#define pr_err(fmt, ...) \
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fprintf(stderr, "%s: Error at %-20s (%3d): " fmt, "pvrdma", __func__, \
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__LINE__, ## __VA_ARGS__)
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#ifdef PVRDMA_DEBUG
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#define pr_dbg(fmt, ...) \
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fprintf(stdout, "%s: %-20s (%3d): " fmt, "pvrdma", __func__, __LINE__,\
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## __VA_ARGS__)
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#else
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#define pr_dbg(fmt, ...)
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#endif
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void *rdma_pci_dma_map(PCIDevice *dev, dma_addr_t addr, dma_addr_t plen);
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void rdma_pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len);
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#endif
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