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IB/mlx5: Add support for ODP for DEVX indirection mkey 

Add support for ODP for DEVX indirection mkey, it includes:
- Recognizing its type as part of the radix tree lookup.
- Use similar flow as done for the MW MKEY type.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Yishai Hadas 2019-01-13 16:01:18 +02:00 committed by Jason Gunthorpe
parent 534fd7aac5
commit 414556af5f
1 changed files with 21 additions and 5 deletions
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26
drivers/infiniband/hw/mlx5/odp.c
View File

@ -685,6 +685,21 @@ struct pf_frame {
int depth;
};
static int get_indirect_num_descs(struct mlx5_core_mkey *mmkey)
{
struct mlx5_ib_mw *mw;
struct mlx5_ib_devx_mr *devx_mr;
if (mmkey->type == MLX5_MKEY_MW) {
mw = container_of(mmkey, struct mlx5_ib_mw, mmkey);
return mw->ndescs;
}
devx_mr = container_of(mmkey, struct mlx5_ib_devx_mr,
mmkey);
return devx_mr->ndescs;
}
/*
* Handle a single data segment in a page-fault WQE or RDMA region.
*
@ -705,11 +720,11 @@ static int pagefault_single_data_segment(struct mlx5_ib_dev *dev, u32 key,
bool prefetch = flags & MLX5_PF_FLAGS_PREFETCH;
struct pf_frame *head = NULL, *frame;
struct mlx5_core_mkey *mmkey;
struct mlx5_ib_mw *mw;
struct mlx5_ib_mr *mr;
struct mlx5_klm *pklm;
u32 *out = NULL;
size_t offset;
int ndescs;
srcu_key = srcu_read_lock(&dev->mr_srcu);
@ -762,7 +777,8 @@ next_mr:
break;
case MLX5_MKEY_MW:
mw = container_of(mmkey, struct mlx5_ib_mw, mmkey);
case MLX5_MKEY_INDIRECT_DEVX:
ndescs = get_indirect_num_descs(mmkey);
if (depth >= MLX5_CAP_GEN(dev->mdev, max_indirection)) {
mlx5_ib_dbg(dev, "indirection level exceeded\n");
@ -771,7 +787,7 @@ next_mr:
}
outlen = MLX5_ST_SZ_BYTES(query_mkey_out) +
sizeof(*pklm) * (mw->ndescs - 2);
sizeof(*pklm) * (ndescs - 2);
if (outlen > cur_outlen) {
kfree(out);
@ -786,14 +802,14 @@ next_mr:
pklm = (struct mlx5_klm *)MLX5_ADDR_OF(query_mkey_out, out,
bsf0_klm0_pas_mtt0_1);
ret = mlx5_core_query_mkey(dev->mdev, &mw->mmkey, out, outlen);
ret = mlx5_core_query_mkey(dev->mdev, mmkey, out, outlen);
if (ret)
goto srcu_unlock;
offset = io_virt - MLX5_GET64(query_mkey_out, out,
memory_key_mkey_entry.start_addr);
for (i = 0; bcnt && i < mw->ndescs; i++, pklm++) {
for (i = 0; bcnt && i < ndescs; i++, pklm++) {
if (offset >= be32_to_cpu(pklm->bcount)) {
offset -= be32_to_cpu(pklm->bcount);
continue;