diff options
Diffstat (limited to 'drivers/infiniband/hw/ehca/ehca_main.c')
| -rw-r--r-- | drivers/infiniband/hw/ehca/ehca_main.c | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c index 65048976198c..482103eb6eac 100644 --- a/drivers/infiniband/hw/ehca/ehca_main.c +++ b/drivers/infiniband/hw/ehca/ehca_main.c @@ -68,6 +68,8 @@ int ehca_port_act_time = 30; int ehca_static_rate = -1; int ehca_scaling_code = 0; int ehca_lock_hcalls = -1; +int ehca_max_cq = -1; +int ehca_max_qp = -1; module_param_named(open_aqp1, ehca_open_aqp1, bool, S_IRUGO); module_param_named(debug_level, ehca_debug_level, int, S_IRUGO); @@ -79,6 +81,8 @@ module_param_named(poll_all_eqs, ehca_poll_all_eqs, bool, S_IRUGO); module_param_named(static_rate, ehca_static_rate, int, S_IRUGO); module_param_named(scaling_code, ehca_scaling_code, bool, S_IRUGO); module_param_named(lock_hcalls, ehca_lock_hcalls, bool, S_IRUGO); +module_param_named(number_of_cqs, ehca_max_cq, int, S_IRUGO); +module_param_named(number_of_qps, ehca_max_qp, int, S_IRUGO); MODULE_PARM_DESC(open_aqp1, "Open AQP1 on startup (default: no)"); @@ -104,6 +108,12 @@ MODULE_PARM_DESC(scaling_code, MODULE_PARM_DESC(lock_hcalls, "Serialize all hCalls made by the driver " "(default: autodetect)"); +MODULE_PARM_DESC(number_of_cqs, + "Max number of CQs which can be allocated " + "(default: autodetect)"); +MODULE_PARM_DESC(number_of_qps, + "Max number of QPs which can be allocated " + "(default: autodetect)"); DEFINE_RWLOCK(ehca_qp_idr_lock); DEFINE_RWLOCK(ehca_cq_idr_lock); @@ -355,6 +365,25 @@ static int ehca_sense_attributes(struct ehca_shca *shca) if (rblock->memory_page_size_supported & pgsize_map[i]) shca->hca_cap_mr_pgsize |= pgsize_map[i + 1]; + /* Set maximum number of CQs and QPs to calculate EQ size */ + if (ehca_max_qp == -1) + ehca_max_qp = min_t(int, rblock->max_qp, EHCA_MAX_NUM_QUEUES); + else if (ehca_max_qp < 1 || ehca_max_qp > rblock->max_qp) { + ehca_gen_err("Requested number of QPs is out of range (1 - %i) " + "specified by HW", rblock->max_qp); + ret = -EINVAL; + goto sense_attributes1; + } + + if (ehca_max_cq == -1) + ehca_max_cq = min_t(int, rblock->max_cq, EHCA_MAX_NUM_QUEUES); + else if (ehca_max_cq < 1 || ehca_max_cq > rblock->max_cq) { + ehca_gen_err("Requested number of CQs is out of range (1 - %i) " + "specified by HW", rblock->max_cq); + ret = -EINVAL; + goto sense_attributes1; + } + /* query max MTU from first port -- it's the same for all ports */ port = (struct hipz_query_port *)rblock; h_ret = hipz_h_query_port(shca->ipz_hca_handle, 1, port); @@ -684,7 +713,7 @@ static int __devinit ehca_probe(struct of_device *dev, struct ehca_shca *shca; const u64 *handle; struct ib_pd *ibpd; - int ret, i; + int ret, i, eq_size; handle = of_get_property(dev->node, "ibm,hca-handle", NULL); if (!handle) { @@ -705,6 +734,8 @@ static int __devinit ehca_probe(struct of_device *dev, return -ENOMEM; } mutex_init(&shca->modify_mutex); + atomic_set(&shca->num_cqs, 0); + atomic_set(&shca->num_qps, 0); for (i = 0; i < ARRAY_SIZE(shca->sport); i++) spin_lock_init(&shca->sport[i].mod_sqp_lock); @@ -724,8 +755,9 @@ static int __devinit ehca_probe(struct of_device *dev, goto probe1; } + eq_size = 2 * ehca_max_cq + 4 * ehca_max_qp; /* create event queues */ - ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, 2048); + ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, eq_size); if (ret) { ehca_err(&shca->ib_device, "Cannot create EQ."); goto probe1; |