Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=82da703ee685b69b921b20eb76b50e519ca9956c
Commit: 82da703ee685b69b921b20eb76b50e519ca9956c
Parent: bf628dc22a09ed2022abb32c76011ae5f99ad6b0
Author: Leonid Arsh <[EMAIL PROTECTED]>
AuthorDate: Sun Dec 10 13:40:17 2006 +0200
Committer: Roland Dreier <[EMAIL PROTECTED]>
CommitDate: Fri Dec 15 20:46:31 2006 -0800
IB/mthca: Add HCA profile module parameters
Add module parameters that enable settting some of the HCA
profile values, such as the number of QPs, CQs, etc.
Signed-off-by: Leonid Arsh <[EMAIL PROTECTED]>
Signed-off-by: Moni Shoua <[EMAIL PROTECTED]>
Signed-off-by: Roland Dreier <[EMAIL PROTECTED]>
---
drivers/infiniband/hw/mthca/mthca_main.c | 111 ++++++++++++++++++++++++++----
1 files changed, 97 insertions(+), 14 deletions(-)
diff --git a/drivers/infiniband/hw/mthca/mthca_main.c
b/drivers/infiniband/hw/mthca/mthca_main.c
index 0491ec7..711c1b8 100644
--- a/drivers/infiniband/hw/mthca/mthca_main.c
+++ b/drivers/infiniband/hw/mthca/mthca_main.c
@@ -82,22 +82,59 @@ MODULE_PARM_DESC(tune_pci, "increase PCI burst from the
default set by BIOS if n
struct mutex mthca_device_mutex;
+#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 hca_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, hca_profile.num_qp, int, 0444);
+MODULE_PARM_DESC(num_qp, "maximum number of QPs per HCA");
+
+module_param_named(rdb_per_qp, hca_profile.rdb_per_qp, int, 0444);
+MODULE_PARM_DESC(rdb_per_qp, "number of RDB buffers per QP");
+
+module_param_named(num_cq, hca_profile.num_cq, int, 0444);
+MODULE_PARM_DESC(num_cq, "maximum number of CQs per HCA");
+
+module_param_named(num_mcg, hca_profile.num_mcg, int, 0444);
+MODULE_PARM_DESC(num_mcg, "maximum number of multicast groups per HCA");
+
+module_param_named(num_mpt, hca_profile.num_mpt, int, 0444);
+MODULE_PARM_DESC(num_mpt,
+ "maximum number of memory protection table entries per HCA");
+
+module_param_named(num_mtt, hca_profile.num_mtt, int, 0444);
+MODULE_PARM_DESC(num_mtt,
+ "maximum number of memory translation table segments per HCA");
+
+module_param_named(num_udav, hca_profile.num_udav, int, 0444);
+MODULE_PARM_DESC(num_udav, "maximum number of UD address vectors per HCA");
+
+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 =
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 */
-};
-
static int mthca_tune_pci(struct mthca_dev *mdev)
{
int cap;
@@ -303,7 +340,7 @@ static int mthca_init_tavor(struct mthca_dev *mdev)
goto err_disable;
}
- profile = default_profile;
+ profile = hca_profile;
profile.num_uar = dev_lim.uar_size / PAGE_SIZE;
profile.uarc_size = 0;
if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
@@ -621,7 +658,7 @@ static int mthca_init_arbel(struct mthca_dev *mdev)
goto err_stop_fw;
}
- profile = default_profile;
+ profile = hca_profile;
profile.num_uar = dev_lim.uar_size / PAGE_SIZE;
profile.num_udav = 0;
if (mdev->mthca_flags & MTHCA_FLAG_SRQ)
@@ -1278,11 +1315,57 @@ static struct pci_driver mthca_driver = {
.remove = __devexit_p(mthca_remove_one)
};
+static void __init __mthca_check_profile_val(const char *name, 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
+ *pval = roundup_pow_of_two(old_pval);
+
+ if (old_pval != *pval) {
+ printk(KERN_WARNING PFX "Invalid value %d for %s in module
parameter.\n",
+ old_pval, name);
+ printk(KERN_WARNING PFX "Corrected %s to %d.\n", name, *pval);
+ }
+}
+
+#define mthca_check_profile_val(name, default) \
+ __mthca_check_profile_val(#name, &hca_profile.name, default)
+
+static void __init mthca_validate_profile(void)
+{
+ mthca_check_profile_val(num_qp, MTHCA_DEFAULT_NUM_QP);
+ mthca_check_profile_val(rdb_per_qp, MTHCA_DEFAULT_RDB_PER_QP);
+ mthca_check_profile_val(num_cq, MTHCA_DEFAULT_NUM_CQ);
+ mthca_check_profile_val(num_mcg, MTHCA_DEFAULT_NUM_MCG);
+ mthca_check_profile_val(num_mpt, MTHCA_DEFAULT_NUM_MPT);
+ mthca_check_profile_val(num_mtt, MTHCA_DEFAULT_NUM_MTT);
+ mthca_check_profile_val(num_udav, MTHCA_DEFAULT_NUM_UDAV);
+ mthca_check_profile_val(fmr_reserved_mtts,
MTHCA_DEFAULT_NUM_RESERVED_MTTS);
+
+ if (hca_profile.fmr_reserved_mtts >= hca_profile.num_mtt) {
+ printk(KERN_WARNING PFX "Invalid fmr_reserved_mtts module
parameter %d.\n",
+ hca_profile.fmr_reserved_mtts);
+ printk(KERN_WARNING PFX "(Must be smaller than num_mtt %d)\n",
+ hca_profile.num_mtt);
+ hca_profile.fmr_reserved_mtts = hca_profile.num_mtt / 2;
+ printk(KERN_WARNING PFX "Corrected fmr_reserved_mtts to %d.\n",
+ hca_profile.fmr_reserved_mtts);
+ }
+}
+
static int __init mthca_init(void)
{
int ret;
mutex_init(&mthca_device_mutex);
+
+ mthca_validate_profile();
+
ret = mthca_catas_init();
if (ret)
return ret;
-
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