resp->toggle_state = queue->toggle_state;
}
-static inline int ll_qp_msg_size(int nr_sge)
-{
- return 128 << nr_sge;
-}
-
/*
* init_qp_queue initializes/constructs r/squeue and registers queue pages.
*/
static inline int init_qp_queue(struct ehca_shca *shca,
+ struct ehca_pd *pd,
struct ehca_qp *my_qp,
struct ipz_queue *queue,
int q_type,
u64 expected_hret,
- int nr_q_pages,
- int wqe_size,
- int nr_sges)
+ struct ehca_alloc_queue_parms *parms,
+ int wqe_size)
{
- int ret, cnt, ipz_rc;
+ int ret, cnt, ipz_rc, nr_q_pages;
void *vpage;
u64 rpage, h_ret;
struct ib_device *ib_dev = &shca->ib_device;
struct ipz_adapter_handle ipz_hca_handle = shca->ipz_hca_handle;
- if (!nr_q_pages)
+ if (!parms->queue_size)
return 0;
- ipz_rc = ipz_queue_ctor(queue, nr_q_pages, EHCA_PAGESIZE,
- wqe_size, nr_sges);
+ if (parms->is_small) {
+ nr_q_pages = 1;
+ ipz_rc = ipz_queue_ctor(pd, queue, nr_q_pages,
+ 128 << parms->page_size,
+ wqe_size, parms->act_nr_sges, 1);
+ } else {
+ nr_q_pages = parms->queue_size;
+ ipz_rc = ipz_queue_ctor(pd, queue, nr_q_pages,
+ EHCA_PAGESIZE, wqe_size,
+ parms->act_nr_sges, 0);
+ }
+
if (!ipz_rc) {
ehca_err(ib_dev, "Cannot allocate page for queue. ipz_rc=%x",
ipz_rc);
h_ret = hipz_h_register_rpage_qp(ipz_hca_handle,
my_qp->ipz_qp_handle,
NULL, 0, q_type,
- rpage, 1,
+ rpage, parms->is_small ? 0 : 1,
my_qp->galpas.kernel);
if (cnt == (nr_q_pages - 1)) { /* last page! */
if (h_ret != expected_hret) {
return 0;
init_qp_queue1:
- ipz_queue_dtor(queue);
+ ipz_queue_dtor(pd, queue);
return ret;
}
+static inline int ehca_calc_wqe_size(int act_nr_sge, int is_llqp)
+{
+ if (is_llqp)
+ return 128 << act_nr_sge;
+ else
+ return offsetof(struct ehca_wqe,
+ u.nud.sg_list[act_nr_sge]);
+}
+
+static void ehca_determine_small_queue(struct ehca_alloc_queue_parms *queue,
+ int req_nr_sge, int is_llqp)
+{
+ u32 wqe_size, q_size;
+ int act_nr_sge = req_nr_sge;
+
+ if (!is_llqp)
+ /* round up #SGEs so WQE size is a power of 2 */
+ for (act_nr_sge = 4; act_nr_sge <= 252;
+ act_nr_sge = 4 + 2 * act_nr_sge)
+ if (act_nr_sge >= req_nr_sge)
+ break;
+
+ wqe_size = ehca_calc_wqe_size(act_nr_sge, is_llqp);
+ q_size = wqe_size * (queue->max_wr + 1);
+
+ if (q_size <= 512)
+ queue->page_size = 2;
+ else if (q_size <= 1024)
+ queue->page_size = 3;
+ else
+ queue->page_size = 0;
+
+ queue->is_small = (queue->page_size != 0);
+}
+
/*
* Create an ib_qp struct that is either a QP or an SRQ, depending on
* the value of the is_srq parameter. If init_attr and srq_init_attr share
if (my_qp->recv_cq)
parms.recv_cq_handle = my_qp->recv_cq->ipz_cq_handle;
- parms.max_send_wr = init_attr->cap.max_send_wr;
- parms.max_recv_wr = init_attr->cap.max_recv_wr;
- parms.max_send_sge = max_send_sge;
- parms.max_recv_sge = max_recv_sge;
+ parms.squeue.max_wr = init_attr->cap.max_send_wr;
+ parms.rqueue.max_wr = init_attr->cap.max_recv_wr;
+ parms.squeue.max_sge = max_send_sge;
+ parms.rqueue.max_sge = max_recv_sge;
+
+ if (EHCA_BMASK_GET(HCA_CAP_MINI_QP, shca->hca_cap)
+ && !(context && udata)) { /* no small QP support in userspace ATM */
+ ehca_determine_small_queue(
+ &parms.squeue, max_send_sge, is_llqp);
+ ehca_determine_small_queue(
+ &parms.rqueue, max_recv_sge, is_llqp);
+ parms.qp_storage =
+ (parms.squeue.is_small || parms.rqueue.is_small);
+ }
h_ret = hipz_h_alloc_resource_qp(shca->ipz_hca_handle, &parms);
if (h_ret != H_SUCCESS) {
my_qp->ipz_qp_handle = parms.qp_handle;
my_qp->galpas = parms.galpas;
+ swqe_size = ehca_calc_wqe_size(parms.squeue.act_nr_sges, is_llqp);
+ rwqe_size = ehca_calc_wqe_size(parms.rqueue.act_nr_sges, is_llqp);
+
switch (qp_type) {
case IB_QPT_RC:
- if (!is_llqp) {
- swqe_size = offsetof(struct ehca_wqe, u.nud.sg_list[
- (parms.act_nr_send_sges)]);
- rwqe_size = offsetof(struct ehca_wqe, u.nud.sg_list[
- (parms.act_nr_recv_sges)]);
- } else { /* for LLQP we need to use msg size, not wqe size */
- swqe_size = ll_qp_msg_size(max_send_sge);
- rwqe_size = ll_qp_msg_size(max_recv_sge);
- parms.act_nr_send_sges = 1;
- parms.act_nr_recv_sges = 1;
+ if (is_llqp) {
+ parms.squeue.act_nr_sges = 1;
+ parms.rqueue.act_nr_sges = 1;
}
break;
- case IB_QPT_UC:
- swqe_size = offsetof(struct ehca_wqe,
- u.nud.sg_list[parms.act_nr_send_sges]);
- rwqe_size = offsetof(struct ehca_wqe,
- u.nud.sg_list[parms.act_nr_recv_sges]);
- break;
-
case IB_QPT_UD:
case IB_QPT_GSI:
case IB_QPT_SMI:
+ /* UD circumvention */
if (is_llqp) {
- swqe_size = ll_qp_msg_size(parms.act_nr_send_sges);
- rwqe_size = ll_qp_msg_size(parms.act_nr_recv_sges);
- parms.act_nr_send_sges = 1;
- parms.act_nr_recv_sges = 1;
+ parms.squeue.act_nr_sges = 1;
+ parms.rqueue.act_nr_sges = 1;
} else {
- /* UD circumvention */
- parms.act_nr_send_sges -= 2;
- parms.act_nr_recv_sges -= 2;
- swqe_size = offsetof(struct ehca_wqe, u.ud_av.sg_list[
- parms.act_nr_send_sges]);
- rwqe_size = offsetof(struct ehca_wqe, u.ud_av.sg_list[
- parms.act_nr_recv_sges]);
+ parms.squeue.act_nr_sges -= 2;
+ parms.rqueue.act_nr_sges -= 2;
}
if (IB_QPT_GSI == qp_type || IB_QPT_SMI == qp_type) {
- parms.act_nr_send_wqes = init_attr->cap.max_send_wr;
- parms.act_nr_recv_wqes = init_attr->cap.max_recv_wr;
- parms.act_nr_send_sges = init_attr->cap.max_send_sge;
- parms.act_nr_recv_sges = init_attr->cap.max_recv_sge;
+ parms.squeue.act_nr_wqes = init_attr->cap.max_send_wr;
+ parms.rqueue.act_nr_wqes = init_attr->cap.max_recv_wr;
+ parms.squeue.act_nr_sges = init_attr->cap.max_send_sge;
+ parms.rqueue.act_nr_sges = init_attr->cap.max_recv_sge;
ib_qp_num = (qp_type == IB_QPT_SMI) ? 0 : 1;
}
/* initialize r/squeue and register queue pages */
if (HAS_SQ(my_qp)) {
ret = init_qp_queue(
- shca, my_qp, &my_qp->ipz_squeue, 0,
+ shca, my_pd, my_qp, &my_qp->ipz_squeue, 0,
HAS_RQ(my_qp) ? H_PAGE_REGISTERED : H_SUCCESS,
- parms.nr_sq_pages, swqe_size,
- parms.act_nr_send_sges);
+ &parms.squeue, swqe_size);
if (ret) {
ehca_err(pd->device, "Couldn't initialize squeue "
"and pages ret=%x", ret);
if (HAS_RQ(my_qp)) {
ret = init_qp_queue(
- shca, my_qp, &my_qp->ipz_rqueue, 1,
- H_SUCCESS, parms.nr_rq_pages, rwqe_size,
- parms.act_nr_recv_sges);
+ shca, my_pd, my_qp, &my_qp->ipz_rqueue, 1,
+ H_SUCCESS, &parms.rqueue, rwqe_size);
if (ret) {
ehca_err(pd->device, "Couldn't initialize rqueue "
"and pages ret=%x", ret);
}
init_attr->cap.max_inline_data = 0; /* not supported yet */
- init_attr->cap.max_recv_sge = parms.act_nr_recv_sges;
- init_attr->cap.max_recv_wr = parms.act_nr_recv_wqes;
- init_attr->cap.max_send_sge = parms.act_nr_send_sges;
- init_attr->cap.max_send_wr = parms.act_nr_send_wqes;
+ init_attr->cap.max_recv_sge = parms.rqueue.act_nr_sges;
+ init_attr->cap.max_recv_wr = parms.rqueue.act_nr_wqes;
+ init_attr->cap.max_send_sge = parms.squeue.act_nr_sges;
+ init_attr->cap.max_send_wr = parms.squeue.act_nr_wqes;
my_qp->init_attr = *init_attr;
/* NOTE: define_apq0() not supported yet */
resp.ext_type = my_qp->ext_type;
resp.qkey = my_qp->qkey;
resp.real_qp_num = my_qp->real_qp_num;
+ resp.ipz_rqueue.offset = my_qp->ipz_rqueue.offset;
+ resp.ipz_squeue.offset = my_qp->ipz_squeue.offset;
if (HAS_SQ(my_qp))
queue2resp(&resp.ipz_squeue, &my_qp->ipz_squeue);
if (HAS_RQ(my_qp))
create_qp_exit4:
if (HAS_RQ(my_qp))
- ipz_queue_dtor(&my_qp->ipz_rqueue);
+ ipz_queue_dtor(my_pd, &my_qp->ipz_rqueue);
create_qp_exit3:
if (HAS_SQ(my_qp))
- ipz_queue_dtor(&my_qp->ipz_squeue);
+ ipz_queue_dtor(my_pd, &my_qp->ipz_squeue);
create_qp_exit2:
hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp);
}
if (HAS_RQ(my_qp))
- ipz_queue_dtor(&my_qp->ipz_rqueue);
+ ipz_queue_dtor(my_pd, &my_qp->ipz_rqueue);
if (HAS_SQ(my_qp))
- ipz_queue_dtor(&my_qp->ipz_squeue);
+ ipz_queue_dtor(my_pd, &my_qp->ipz_squeue);
kmem_cache_free(qp_cache, my_qp);
return 0;
}
projects / linux-2.6-omap-h63xx.git / blobdiff