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hw/rdma: Add wrappers and macros

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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>
This commit is contained in:
Yuval Shaia 2018-02-09 15:15:00 +02:00 committed by Marcel Apfelbaum
parent 7605e12a51
commit dcbf469aef
4 changed files with 98 additions and 0 deletions
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1
hw/Makefile.objs
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@ -18,6 +18,7 @@ devices-dirs-$(CONFIG_IPMI) += ipmi/
devices-dirs-$(CONFIG_SOFTMMU) += isa/
devices-dirs-$(CONFIG_SOFTMMU) += misc/
devices-dirs-$(CONFIG_SOFTMMU) += net/
devices-dirs-$(CONFIG_SOFTMMU) += rdma/
devices-dirs-$(CONFIG_SOFTMMU) += nvram/
devices-dirs-$(CONFIG_SOFTMMU) += pci/
devices-dirs-$(CONFIG_PCI) += pci-bridge/ pci-host/

3
hw/rdma/Makefile.objs Normal file
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@ -0,0 +1,3 @@
ifeq ($(CONFIG_RDMA),y)
obj-$(CONFIG_PCI) += rdma_utils.o
endif

51
hw/rdma/rdma_utils.c Normal file
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@ -0,0 +1,51 @@
/*
* QEMU paravirtual RDMA - Generic RDMA backend
*
* 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.
*
*/
#include "rdma_utils.h"
void *rdma_pci_dma_map(PCIDevice *dev, dma_addr_t addr, dma_addr_t plen)
{
void *p;
hwaddr len = plen;
if (!addr) {
pr_dbg("addr is NULL\n");
return NULL;
}
p = pci_dma_map(dev, addr, &len, DMA_DIRECTION_TO_DEVICE);
if (!p) {
pr_dbg("Fail in pci_dma_map, addr=0x%llx, len=%ld\n",
(long long unsigned int)addr, len);
return NULL;
}
if (len != plen) {
rdma_pci_dma_unmap(dev, p, len);
return NULL;
}
pr_dbg("0x%llx -> %p (len=%ld)\n", (long long unsigned int)addr, p, len);
return p;
}
void rdma_pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len)
{
pr_dbg("%p\n", buffer);
if (buffer) {
pci_dma_unmap(dev, buffer, len, DMA_DIRECTION_TO_DEVICE, 0);
}
}

43
hw/rdma/rdma_utils.h Normal file
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@ -0,0 +1,43 @@
/*
* RDMA device: Debug utilities
*
* 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 RDMA_UTILS_H
#define RDMA_UTILS_H
#include <qemu/osdep.h>
#include <include/hw/pci/pci.h>
#include <include/sysemu/dma.h>
#define pr_info(fmt, ...) \
fprintf(stdout, "%s: %-20s (%3d): " fmt, "pvrdma", __func__, __LINE__,\
## __VA_ARGS__)
#define pr_err(fmt, ...) \
fprintf(stderr, "%s: Error at %-20s (%3d): " fmt, "pvrdma", __func__, \
__LINE__, ## __VA_ARGS__)
#ifdef PVRDMA_DEBUG
#define pr_dbg(fmt, ...) \
fprintf(stdout, "%s: %-20s (%3d): " fmt, "pvrdma", __func__, __LINE__,\
## __VA_ARGS__)
#else
#define pr_dbg(fmt, ...)
#endif
void *rdma_pci_dma_map(PCIDevice *dev, dma_addr_t addr, dma_addr_t plen);
void rdma_pci_dma_unmap(PCIDevice *dev, void *buffer, dma_addr_t len);
#endif