IB/mlx4: Add support for XRC domains

Support creating and destroying XRC domains.  Any sharing of the XRCD
is managed above the low-level driver.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/net/mlx4/fw.c b/drivers/net/mlx4/fw.c
index 7eb8ba822e97..875838b8799c 100644
--- a/drivers/net/mlx4/fw.c
+++ b/drivers/net/mlx4/fw.c
@@ -204,6 +204,8 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
 #define QUERY_DEV_CAP_MAX_MCG_OFFSET            0x63
 #define QUERY_DEV_CAP_RSVD_PD_OFFSET            0x64
 #define QUERY_DEV_CAP_MAX_PD_OFFSET             0x65
+#define QUERY_DEV_CAP_RSVD_XRC_OFFSET           0x66
+#define QUERY_DEV_CAP_MAX_XRC_OFFSET            0x67
 #define QUERY_DEV_CAP_MAX_COUNTERS_OFFSET       0x68
 #define QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET    0x80
 #define QUERY_DEV_CAP_QPC_ENTRY_SZ_OFFSET       0x82
@@ -318,6 +320,10 @@ int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
         dev_cap->reserved_pds = field >> 4;
         MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_PD_OFFSET);
         dev_cap->max_pds = 1 << (field & 0x3f);
+        MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_XRC_OFFSET);
+        dev_cap->reserved_xrcds = field >> 4;
+        MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_PD_OFFSET);
+        dev_cap->max_xrcds = 1 << (field & 0x1f);
 
         MLX4_GET(size, outbox, QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET);
         dev_cap->rdmarc_entry_sz = size;