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 | 139
++++++++++++++++++++++++++++++++++++++++++++++++++++++-----
1 files changed, 128 insertions(+), 11 deletions(-)
--- mthca_main.c.orig 2006-11-14 22:07:58.000000000 -0500
+++ mthca_main.c 2006-11-16 11:27:17.683513163 -0500
@@ -80,21 +80,134 @@
module_param(tune_pci, int, 0444);
MODULE_PARM_DESC(tune_pci, "increase PCI burst from the default set by BIOS
if nonzero");
+#define MTHCA_DEFAULT_NUM_QP (1 << 16)
+#define MTHCA_DEFAULT_RDB_PER_QP (1 << 2)
+#define MTHCA_DEFAULT_NUM_CQ (1 << 16)
+#define MTHCA_DEFAULT_NUM_MCG (1 << 13)
+#define MTHCA_DEFAULT_NUM_MPT (1 << 17)
+#define MTHCA_DEFAULT_NUM_MTT (1 << 20)
+#define MTHCA_DEFAULT_NUM_UDAV (1 << 15)
+#define MTHCA_DEFAULT_NUM_RESERVED_MTTS (1 << 18)
+#define MTHCA_DEFAULT_NUM_UARC_SIZE (1 << 18)
+
+static struct mthca_profile default_profile = {
+ .num_qp = MTHCA_DEFAULT_NUM_QP,
+ .rdb_per_qp = MTHCA_DEFAULT_RDB_PER_QP,
+ .num_cq = MTHCA_DEFAULT_NUM_CQ,
+ .num_mcg = MTHCA_DEFAULT_NUM_MCG,
+ .num_mpt = MTHCA_DEFAULT_NUM_MPT,
+ .num_mtt = MTHCA_DEFAULT_NUM_MTT,
+ .num_udav = MTHCA_DEFAULT_NUM_UDAV, /* Tavor
only */
+ .fmr_reserved_mtts = MTHCA_DEFAULT_NUM_RESERVED_MTTS, /* Tavor only */
+ .uarc_size = MTHCA_DEFAULT_NUM_UARC_SIZE, /* 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";
-static struct mthca_profile default_profile = {
- .num_qp = 1 << 16,
- .rdb_per_qp = 4,
- .num_cq = 1 << 16,
- .num_mcg = 1 << 13,
- .num_mpt = 1 << 17,
- .num_mtt = 1 << 20,
- .num_udav = 1 << 15, /* Tavor only */
- .fmr_reserved_mtts = 1 << 18, /* Tavor only */
- .uarc_size = 1 << 18, /* Arbel only */
-};
+#define is_power_of_2(x) (!(x & (x - 1)))
+
+static int __devinit mthca_check_profile_value(int* pval,int pval_default){
+ /* value must be positive and power of 2 */
+ int old_pval = *pval;
+ if (old_pval <= 0) {
+ *pval = pval_default;
+ } else if (!is_power_of_2(old_pval)) {
+ *pval = roundup_pow_of_two(old_pval);
+ }
+ return old_pval-*pval;
+}
+
+static int __devinit mthca_validate_profile(struct mthca_dev *mdev,
+ struct mthca_profile *profile)
+{
+ if (mthca_check_profile_value(&default_profile.num_qp,
+ MTHCA_DEFAULT_NUM_QP)){
+ mthca_warn(mdev,"invalid num_qp passed. changed to %d.\n",
+ default_profile.num_qp);
+ }
+
+ if (mthca_check_profile_value(&default_profile.rdb_per_qp,
+ MTHCA_DEFAULT_RDB_PER_QP)){
+ mthca_warn(mdev,"invalid rdb_per_qp passed. changed to %d\n",
+ default_profile.rdb_per_qp);
+ }
+
+ if (mthca_check_profile_value(&default_profile.num_cq,
+ MTHCA_DEFAULT_NUM_CQ)){
+ mthca_warn(mdev,"invalid num_cq passed. changed to %d\n",
+ default_profile.num_cq);
+ }
+
+ if (mthca_check_profile_value(&default_profile.num_mcg,
+ MTHCA_DEFAULT_NUM_MCG)){
+ mthca_warn(mdev,"invalid num_mcg passed. changed to %d\n",
+ default_profile.num_mcg);
+ }
+ if (mthca_check_profile_value(&default_profile.num_mpt,
+ MTHCA_DEFAULT_NUM_MPT)){
+ mthca_warn(mdev,"invalid num_mpt passed. changed to %d\n",
+ default_profile.num_mpt);
+ }
+
+ if (mthca_check_profile_value(&default_profile.num_mtt,
+ MTHCA_DEFAULT_NUM_MTT)){
+ mthca_warn(mdev,"invalid num_mtt passed. changed to %d\n",
+ default_profile.num_mtt);
+ }
+
+ if (mthca_is_memfree(mdev)) {
+ if (mthca_check_profile_value(&default_profile.num_udav,
+ MTHCA_DEFAULT_NUM_UDAV)){
+ mthca_warn(mdev,"invalid num_udav passed. changed to
%d\n",
+ default_profile.num_udav);
+ }
+
+ if
(mthca_check_profile_value(&default_profile.fmr_reserved_mtts,
+ MTHCA_DEFAULT_NUM_RESERVED_MTTS)){
+ mthca_warn(mdev,"invalid fmr_reserved_mtts passed.
changed to %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)
{
@@ -1095,6 +1208,10 @@
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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