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path: root/drivers/infiniband/hw/ipath/ipath_mr.c
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Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_mr.c')
-rw-r--r--drivers/infiniband/hw/ipath/ipath_mr.c38
1 files changed, 27 insertions, 11 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_mr.c b/drivers/infiniband/hw/ipath/ipath_mr.c
index 31e70732e369..bdeef8d4f279 100644
--- a/drivers/infiniband/hw/ipath/ipath_mr.c
+++ b/drivers/infiniband/hw/ipath/ipath_mr.c
@@ -31,6 +31,7 @@
* SOFTWARE.
*/
+#include <rdma/ib_umem.h>
#include <rdma/ib_pack.h>
#include <rdma/ib_smi.h>
@@ -147,6 +148,7 @@ struct ib_mr *ipath_reg_phys_mr(struct ib_pd *pd,
mr->mr.offset = 0;
mr->mr.access_flags = acc;
mr->mr.max_segs = num_phys_buf;
+ mr->umem = NULL;
m = 0;
n = 0;
@@ -170,46 +172,56 @@ bail:
/**
* ipath_reg_user_mr - register a userspace memory region
* @pd: protection domain for this memory region
- * @region: the user memory region
+ * @start: starting userspace address
+ * @length: length of region to register
+ * @virt_addr: virtual address to use (from HCA's point of view)
* @mr_access_flags: access flags for this memory region
* @udata: unused by the InfiniPath driver
*
* Returns the memory region on success, otherwise returns an errno.
*/
-struct ib_mr *ipath_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
- int mr_access_flags, struct ib_udata *udata)
+struct ib_mr *ipath_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+ u64 virt_addr, int mr_access_flags,
+ struct ib_udata *udata)
{
struct ipath_mr *mr;
+ struct ib_umem *umem;
struct ib_umem_chunk *chunk;
int n, m, i;
struct ib_mr *ret;
- if (region->length == 0) {
+ if (length == 0) {
ret = ERR_PTR(-EINVAL);
goto bail;
}
+ umem = ib_umem_get(pd->uobject->context, start, length, mr_access_flags);
+ if (IS_ERR(umem))
+ return (void *) umem;
+
n = 0;
- list_for_each_entry(chunk, &region->chunk_list, list)
+ list_for_each_entry(chunk, &umem->chunk_list, list)
n += chunk->nents;
mr = alloc_mr(n, &to_idev(pd->device)->lk_table);
if (!mr) {
ret = ERR_PTR(-ENOMEM);
+ ib_umem_release(umem);
goto bail;
}
mr->mr.pd = pd;
- mr->mr.user_base = region->user_base;
- mr->mr.iova = region->virt_base;
- mr->mr.length = region->length;
- mr->mr.offset = region->offset;
+ mr->mr.user_base = start;
+ mr->mr.iova = virt_addr;
+ mr->mr.length = length;
+ mr->mr.offset = umem->offset;
mr->mr.access_flags = mr_access_flags;
mr->mr.max_segs = n;
+ mr->umem = umem;
m = 0;
n = 0;
- list_for_each_entry(chunk, &region->chunk_list, list) {
+ list_for_each_entry(chunk, &umem->chunk_list, list) {
for (i = 0; i < chunk->nents; i++) {
void *vaddr;
@@ -219,7 +231,7 @@ struct ib_mr *ipath_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
goto bail;
}
mr->mr.map[m]->segs[n].vaddr = vaddr;
- mr->mr.map[m]->segs[n].length = region->page_size;
+ mr->mr.map[m]->segs[n].length = umem->page_size;
n++;
if (n == IPATH_SEGSZ) {
m++;
@@ -253,6 +265,10 @@ int ipath_dereg_mr(struct ib_mr *ibmr)
i--;
kfree(mr->mr.map[i]);
}
+
+ if (mr->umem)
+ ib_umem_release(mr->umem);
+
kfree(mr);
return 0;
}