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path: root/drivers/infiniband/hw/mthca/mthca_provider.c
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Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_provider.c')
-rw-r--r--drivers/infiniband/hw/mthca/mthca_provider.c38
1 files changed, 28 insertions, 10 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
index 1c05486c3c6..6bcde1cb968 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -37,6 +37,7 @@
*/
#include <rdma/ib_smi.h>
+#include <rdma/ib_umem.h>
#include <rdma/ib_user_verbs.h>
#include <linux/mm.h>
@@ -908,6 +909,8 @@ static struct ib_mr *mthca_get_dma_mr(struct ib_pd *pd, int acc)
return ERR_PTR(err);
}
+ mr->umem = NULL;
+
return &mr->ibmr;
}
@@ -1003,11 +1006,13 @@ static struct ib_mr *mthca_reg_phys_mr(struct ib_pd *pd,
}
kfree(page_list);
+ mr->umem = NULL;
+
return &mr->ibmr;
}
-static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
- int acc, struct ib_udata *udata)
+static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
+ u64 virt, int acc, struct ib_udata *udata)
{
struct mthca_dev *dev = to_mdev(pd->device);
struct ib_umem_chunk *chunk;
@@ -1018,20 +1023,26 @@ static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
int err = 0;
int write_mtt_size;
- shift = ffs(region->page_size) - 1;
-
mr = kmalloc(sizeof *mr, GFP_KERNEL);
if (!mr)
return ERR_PTR(-ENOMEM);
+ mr->umem = ib_umem_get(pd->uobject->context, start, length, acc);
+ if (IS_ERR(mr->umem)) {
+ err = PTR_ERR(mr->umem);
+ goto err;
+ }
+
+ shift = ffs(mr->umem->page_size) - 1;
+
n = 0;
- list_for_each_entry(chunk, &region->chunk_list, list)
+ list_for_each_entry(chunk, &mr->umem->chunk_list, list)
n += chunk->nents;
mr->mtt = mthca_alloc_mtt(dev, n);
if (IS_ERR(mr->mtt)) {
err = PTR_ERR(mr->mtt);
- goto err;
+ goto err_umem;
}
pages = (u64 *) __get_free_page(GFP_KERNEL);
@@ -1044,12 +1055,12 @@ static struct ib_mr *mthca_reg_user_mr(struct ib_pd *pd, struct ib_umem *region,
write_mtt_size = min(mthca_write_mtt_size(dev), (int) (PAGE_SIZE / sizeof *pages));
- list_for_each_entry(chunk, &region->chunk_list, list)
+ list_for_each_entry(chunk, &mr->umem->chunk_list, list)
for (j = 0; j < chunk->nmap; ++j) {
len = sg_dma_len(&chunk->page_list[j]) >> shift;
for (k = 0; k < len; ++k) {
pages[i++] = sg_dma_address(&chunk->page_list[j]) +
- region->page_size * k;
+ mr->umem->page_size * k;
/*
* Be friendly to write_mtt and pass it chunks
* of appropriate size.
@@ -1071,8 +1082,8 @@ mtt_done:
if (err)
goto err_mtt;
- err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, region->virt_base,
- region->length, convert_access(acc), mr);
+ err = mthca_mr_alloc(dev, to_mpd(pd)->pd_num, shift, virt, length,
+ convert_access(acc), mr);
if (err)
goto err_mtt;
@@ -1082,6 +1093,9 @@ mtt_done:
err_mtt:
mthca_free_mtt(dev, mr->mtt);
+err_umem:
+ ib_umem_release(mr->umem);
+
err:
kfree(mr);
return ERR_PTR(err);
@@ -1090,8 +1104,12 @@ err:
static int mthca_dereg_mr(struct ib_mr *mr)
{
struct mthca_mr *mmr = to_mmr(mr);
+
mthca_free_mr(to_mdev(mr->device), mmr);
+ if (mmr->umem)
+ ib_umem_release(mmr->umem);
kfree(mmr);
+
return 0;
}