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path: root/drivers/infiniband/hw/cxgb4/device.c
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Diffstat (limited to 'drivers/infiniband/hw/cxgb4/device.c')
-rw-r--r--drivers/infiniband/hw/cxgb4/device.c34
1 files changed, 30 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index 80069ad595c1..ae656016e1ae 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -41,10 +41,20 @@
#define DRV_VERSION "0.1"
MODULE_AUTHOR("Steve Wise");
-MODULE_DESCRIPTION("Chelsio T4 RDMA Driver");
+MODULE_DESCRIPTION("Chelsio T4/T5 RDMA Driver");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(DRV_VERSION);
+static int allow_db_fc_on_t5;
+module_param(allow_db_fc_on_t5, int, 0644);
+MODULE_PARM_DESC(allow_db_fc_on_t5,
+ "Allow DB Flow Control on T5 (default = 0)");
+
+static int allow_db_coalescing_on_t5;
+module_param(allow_db_coalescing_on_t5, int, 0644);
+MODULE_PARM_DESC(allow_db_coalescing_on_t5,
+ "Allow DB Coalescing on T5 (default = 0)");
+
struct uld_ctx {
struct list_head entry;
struct cxgb4_lld_info lldi;
@@ -614,7 +624,7 @@ static int rdma_supported(const struct cxgb4_lld_info *infop)
{
return infop->vr->stag.size > 0 && infop->vr->pbl.size > 0 &&
infop->vr->rq.size > 0 && infop->vr->qp.size > 0 &&
- infop->vr->cq.size > 0 && infop->vr->ocq.size > 0;
+ infop->vr->cq.size > 0;
}
static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
@@ -627,6 +637,22 @@ static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
pci_name(infop->pdev));
return ERR_PTR(-ENOSYS);
}
+ if (!ocqp_supported(infop))
+ pr_info("%s: On-Chip Queues not supported on this device.\n",
+ pci_name(infop->pdev));
+
+ if (!is_t4(infop->adapter_type)) {
+ if (!allow_db_fc_on_t5) {
+ db_fc_threshold = 100000;
+ pr_info("DB Flow Control Disabled.\n");
+ }
+
+ if (!allow_db_coalescing_on_t5) {
+ db_coalescing_threshold = -1;
+ pr_info("DB Coalescing Disabled.\n");
+ }
+ }
+
devp = (struct c4iw_dev *)ib_alloc_device(sizeof(*devp));
if (!devp) {
printk(KERN_ERR MOD "Cannot allocate ib device\n");
@@ -678,8 +704,8 @@ static void *c4iw_uld_add(const struct cxgb4_lld_info *infop)
int i;
if (!vers_printed++)
- printk(KERN_INFO MOD "Chelsio T4 RDMA Driver - version %s\n",
- DRV_VERSION);
+ pr_info("Chelsio T4/T5 RDMA Driver - version %s\n",
+ DRV_VERSION);
ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
if (!ctx) {