Merge branch 'linus' into cpus4096

[pandora-kernel.git] / drivers / infiniband / hw / mthca / mthca_main.c

diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c
index 5cf8250..fb9f91b 100644 (file)
--- a/drivers/infiniband/hw/mthca/mthca_main.c
+++ b/drivers/infiniband/hw/mthca/mthca_main.c
@@ -30,8 +30,6 @@
  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
- *
- * $Id: mthca_main.c 1396 2004-12-28 04:10:27Z roland $
  */
 
 #include <linux/module.h>
@@ -45,6 +43,7 @@
 #include "mthca_cmd.h"
 #include "mthca_profile.h"
 #include "mthca_memfree.h"
+#include "mthca_wqe.h"
 
 MODULE_AUTHOR("Roland Dreier");
 MODULE_DESCRIPTION("Mellanox InfiniBand HCA low-level driver");
@@ -126,7 +125,7 @@ module_param_named(fmr_reserved_mtts, hca_profile.fmr_reserved_mtts, int, 0444);
 MODULE_PARM_DESC(fmr_reserved_mtts,
                 "number of memory translation table segments reserved for FMR");
 
-static const char mthca_version[] __devinitdata =
+static char mthca_version[] __devinitdata =
        DRV_NAME ": Mellanox InfiniBand HCA driver v"
        DRV_VERSION " (" DRV_RELDATE ")\n";
 
@@ -200,7 +199,18 @@ static int mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim *dev_lim)
        mdev->limits.gid_table_len      = dev_lim->max_gids;
        mdev->limits.pkey_table_len     = dev_lim->max_pkeys;
        mdev->limits.local_ca_ack_delay = dev_lim->local_ca_ack_delay;
-       mdev->limits.max_sg             = dev_lim->max_sg;
+       /*
+        * Need to allow for worst case send WQE overhead and check
+        * whether max_desc_sz imposes a lower limit than max_sg; UD
+        * send has the biggest overhead.
+        */
+       mdev->limits.max_sg             = min_t(int, dev_lim->max_sg,
+                                             (dev_lim->max_desc_sz -
+                                              sizeof (struct mthca_next_seg) -
+                                              (mthca_is_memfree(mdev) ?
+                                               sizeof (struct mthca_arbel_ud_seg) :
+                                               sizeof (struct mthca_tavor_ud_seg))) /
+                                               sizeof (struct mthca_data_seg));
        mdev->limits.max_wqes           = dev_lim->max_qp_sz;
        mdev->limits.max_qp_init_rdma   = dev_lim->max_requester_per_qp;
        mdev->limits.reserved_qps       = dev_lim->reserved_qps;
@@ -267,11 +277,16 @@ static int mthca_dev_lim(struct mthca_dev *mdev, struct mthca_dev_lim *dev_lim)
        if (dev_lim->flags & DEV_LIM_FLAG_SRQ)
                mdev->mthca_flags |= MTHCA_FLAG_SRQ;
 
+       if (mthca_is_memfree(mdev))
+               if (dev_lim->flags & DEV_LIM_FLAG_IPOIB_CSUM)
+                       mdev->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
+
        return 0;
 }
 
 static int mthca_init_tavor(struct mthca_dev *mdev)
 {
+       s64 size;
        u8 status;
        int err;
        struct mthca_dev_lim        dev_lim;
@@ -324,9 +339,11 @@ static int mthca_init_tavor(struct mthca_dev *mdev)
        if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
                profile.num_srq = dev_lim.max_srqs;
 
-       err = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
-       if (err < 0)
+       size = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
+       if (size < 0) {
+               err = size;
                goto err_disable;
+       }
 
        err = mthca_INIT_HCA(mdev, &init_hca, &status);
        if (err) {
@@ -605,7 +622,7 @@ static int mthca_init_arbel(struct mthca_dev *mdev)
        struct mthca_dev_lim        dev_lim;
        struct mthca_profile        profile;
        struct mthca_init_hca_param init_hca;
-       u64 icm_size;
+       s64 icm_size;
        u8 status;
        int err;
 
@@ -653,7 +670,7 @@ static int mthca_init_arbel(struct mthca_dev *mdev)
                profile.num_srq = dev_lim.max_srqs;
 
        icm_size = mthca_make_profile(mdev, &profile, &dev_lim, &init_hca);
-       if ((int) icm_size < 0) {
+       if (icm_size < 0) {
                err = icm_size;
                goto err_stop_fw;
        }
@@ -735,7 +752,8 @@ static int mthca_init_hca(struct mthca_dev *mdev)
        }
 
        mdev->eq_table.inta_pin = adapter.inta_pin;
-       mdev->rev_id            = adapter.revision_id;
+       if (!mthca_is_memfree(mdev))
+               mdev->rev_id = adapter.revision_id;
        memcpy(mdev->board_id, adapter.board_id, sizeof mdev->board_id);
 
        return 0;