From: Leonid Arsh <[EMAIL PROTECTED]>
Adds module parameters that enable settting some of the HCA
profile values.
Signed-off-by: Leonid Arsh <[EMAIL PROTECTED]>
Signed-off-by: Moni Shoua <[EMAIL PROTECTED]>
---
mthca_main.c | 104 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 101 insertions(+), 3 deletions(-)
--- mthca_main.c.orig 2006-11-14 22:07:58.000000000 -0500
+++ mthca_main.c 2006-11-15 09:42:30.151093815 -0500
@@ -80,9 +80,6 @@
module_param(tune_pci, int, 0444);
MODULE_PARM_DESC(tune_pci, "increase PCI burst from the default set by BIOS if
nonzero");
-static const char mthca_version[] __devinitdata =
- DRV_NAME ": Mellanox InfiniBand HCA driver v"
- DRV_VERSION " (" DRV_RELDATE ")\n";
static struct mthca_profile default_profile = {
.num_qp = 1 << 16,
@@ -96,6 +93,103 @@
.uarc_size = 1 << 18, /* Arbel only */
};
+module_param_named(num_qp, default_profile.num_qp, int, 0444);
+MODULE_PARM_DESC(num_qp, "maximum number of available QPs per HCA");
+
+module_param_named(rdb_per_qp, default_profile.rdb_per_qp, int, 0444);
+MODULE_PARM_DESC(rdb_per_qp, "number of RDB buffers per QP");
+
+module_param_named(num_cq, default_profile.num_cq, int, 0444);
+MODULE_PARM_DESC(num_cq, "maximum number of CQs per HCA");
+
+module_param_named(num_mcg, default_profile.num_mcg, int, 0444);
+MODULE_PARM_DESC(num_mcg, "maximum number of multicast groups per HCA");
+
+module_param_named(num_mpt, default_profile.num_mpt, int, 0444);
+MODULE_PARM_DESC(num_mpt,
+ "maximum number of memory protection pable entries per HCA");
+
+module_param_named(num_mtt, default_profile.num_mtt, int, 0444);
+MODULE_PARM_DESC(num_mtt,
+ "maximum number of memory translation table segments per HCA");
+/* Tavor only */
+module_param_named(num_udav, default_profile.num_udav, int, 0444);
+MODULE_PARM_DESC(num_udav, "maximum number of UD address vectors per HCA");
+
+/* Tavor only */
+module_param_named(fmr_reserved_mtts, default_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 =
+ DRV_NAME ": Mellanox InfiniBand HCA driver v"
+ DRV_VERSION " (" DRV_RELDATE ")\n";
+
+#define is_power_of_2(x) (x>0 &&(x & (x - 1)))
+#define to_up_power_of_2(x) (x = roundup_pow_of_two(x))
+static int __devinit mthca_validate_profile(struct mthca_dev *mdev,
+ struct mthca_profile *profile)
+{
+ if (!is_power_of_2(default_profile.num_qp)){
+ to_up_power_of_2(default_profile.num_qp);
+ mthca_warn(mdev, "num_qp rounded to power of 2 (%d).\n",
+ default_profile.num_qp);
+ }
+
+ if (!is_power_of_2(default_profile.rdb_per_qp)){
+ to_up_power_of_2(default_profile.rdb_per_qp);
+ mthca_warn(mdev, "rdb_per_qp rounded to power of 2 (%d)\n",
+ default_profile.rdb_per_qp);
+ }
+
+ if (!is_power_of_2(default_profile.num_cq)){
+ to_up_power_of_2(default_profile.num_cq);
+ mthca_warn(mdev, "num_cq rounded to power of 2 (%d)\n",
+ default_profile.num_cq);
+ }
+
+ if (!is_power_of_2(default_profile.num_mcg)){
+ to_up_power_of_2(default_profile.num_mcg);
+ mthca_warn(mdev, "num_mcg rounded to power of 2 (%d)\n",
+ default_profile.num_mcg);
+ }
+ if (!is_power_of_2(default_profile.num_mpt)){
+ to_up_power_of_2(default_profile.num_mpt);
+ mthca_warn(mdev, "num_mpt rounded to power of 2 (%d)\n",
+ default_profile.num_mpt);
+ }
+
+ if (!is_power_of_2(default_profile.num_mtt)){
+ to_up_power_of_2(default_profile.num_mtt);
+ mthca_warn(mdev, "num_mtt rounded to power of 2 (%d)\n",
+ default_profile.num_mtt);
+ }
+
+ if (mthca_is_memfree(mdev)) {
+ if (!is_power_of_2(default_profile.num_udav)){
+ to_up_power_of_2(default_profile.num_udav);
+ mthca_warn(mdev, "num_udav rounded to power of 2
(%d)\n",
+ default_profile.num_udav);
+ }
+
+ if (!is_power_of_2(default_profile.fmr_reserved_mtts)){
+ to_up_power_of_2(default_profile.fmr_reserved_mtts);
+ mthca_warn(mdev, "fmr_reserved_mtts rounded to power of
2 (%d)\n",
+ default_profile.fmr_reserved_mtts);
+ }
+ if (default_profile.fmr_reserved_mtts >=
default_profile.num_mtt ) {
+ mthca_err(mdev,
+ "Invalid fmr_reserved_mtts parameter value
(%d). "
+ "Must be lower then num_mtt (%d)\n",
+ default_profile.fmr_reserved_mtts,
+ default_profile.num_mtt );
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
static int __devinit mthca_tune_pci(struct mthca_dev *mdev)
{
int cap;
@@ -1095,6 +1189,10 @@
if (err)
goto err_cmd;
+ err = mthca_validate_profile(mdev, &default_profile);
+ if (err)
+ goto err_cmd;
+
err = mthca_init_hca(mdev);
if (err)
goto err_cmd;
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