mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-24 03:59:52 +00:00
dcbf469aef
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>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/*
|
|
* 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);
|
|
}
|
|
}
|