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From: Anatoly Burakov <anatoly.burakov@intel.com>
To: dev@dpdk.org
Cc: keith.wiles@intel.com, jianfeng.tan@intel.com, andras.kovacs@ericsson.com,
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Date: Wed, 4 Apr 2018 00:21:44 +0100
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Subject: [dpdk-dev] [PATCH v3 32/68] vfio/type1: use memseg walk instead of
iteration
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Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
lib/librte_eal/linuxapp/eal/eal_vfio.c | 45 ++++++++++++++++------------------
1 file changed, 21 insertions(+), 24 deletions(-)
diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.c b/lib/librte_eal/linuxapp/eal/eal_vfio.c
index 2421d51..2a34ae9 100644
--- a/lib/librte_eal/linuxapp/eal/eal_vfio.c
+++ b/lib/librte_eal/linuxapp/eal/eal_vfio.c
@@ -665,39 +665,36 @@ vfio_get_group_no(const char *sysfs_base,
}
static int
-vfio_type1_dma_map(int vfio_container_fd)
+type1_map(const struct rte_memseg *ms, void *arg)
{
- const struct rte_memseg *ms = rte_eal_get_physmem_layout();
- int i, ret;
+ int *vfio_container_fd = arg;
+ struct vfio_iommu_type1_dma_map dma_map;
+ int ret;
- /* map all DPDK segments for DMA. use 1:1 PA to IOVA mapping */
- for (i = 0; i < RTE_MAX_MEMSEG; i++) {
- struct vfio_iommu_type1_dma_map dma_map;
+ memset(&dma_map, 0, sizeof(dma_map));
+ dma_map.argsz = sizeof(struct vfio_iommu_type1_dma_map);
+ dma_map.vaddr = ms->addr_64;
+ dma_map.size = ms->len;
+ dma_map.iova = ms->iova;
+ dma_map.flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE;
- if (ms[i].addr == NULL)
- break;
-
- memset(&dma_map, 0, sizeof(dma_map));
- dma_map.argsz = sizeof(struct vfio_iommu_type1_dma_map);
- dma_map.vaddr = ms[i].addr_64;
- dma_map.size = ms[i].len;
- dma_map.iova = ms[i].iova;
- dma_map.flags = VFIO_DMA_MAP_FLAG_READ | VFIO_DMA_MAP_FLAG_WRITE;
+ ret = ioctl(*vfio_container_fd, VFIO_IOMMU_MAP_DMA, &dma_map);
- ret = ioctl(vfio_container_fd, VFIO_IOMMU_MAP_DMA, &dma_map);
-
- if (ret) {
- RTE_LOG(ERR, EAL, " cannot set up DMA remapping, "
- "error %i (%s)\n", errno,
- strerror(errno));
- return -1;
- }
+ if (ret) {
+ RTE_LOG(ERR, EAL, " cannot set up DMA remapping, error %i (%s)\n",
+ errno, strerror(errno));
+ return -1;
}
-
return 0;
}
static int
+vfio_type1_dma_map(int vfio_container_fd)
+{
+ return rte_memseg_walk(type1_map, &vfio_container_fd);
+}
+
+static int
vfio_spapr_dma_map(int vfio_container_fd)
{
const struct rte_memseg *ms = rte_eal_get_physmem_layout();
--
2.7.4