diff options
Diffstat (limited to 'drivers/infiniband/hw/ehca/ehca_qp.c')
| -rw-r--r-- | drivers/infiniband/hw/ehca/ehca_qp.c | 1507 |
1 files changed, 1507 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c new file mode 100644 index 0000000..4394123 --- /dev/null +++ b/drivers/infiniband/hw/ehca/ehca_qp.c @@ -0,0 +1,1507 @@ +/* + * IBM eServer eHCA Infiniband device driver for Linux on POWER + * + * QP functions + * + * Authors: Waleri Fomin <fomin@de.ibm.com> + * Hoang-Nam Nguyen <hnguyen@de.ibm.com> + * Reinhard Ernst <rernst@de.ibm.com> + * Heiko J Schick <schickhj@de.ibm.com> + * + * Copyright (c) 2005 IBM Corporation + * + * All rights reserved. + * + * This source code is distributed under a dual license of GPL v2.0 and OpenIB + * BSD. + * + * OpenIB BSD License + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER + * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + + +#include <asm/current.h> + +#include "ehca_classes.h" +#include "ehca_tools.h" +#include "ehca_qes.h" +#include "ehca_iverbs.h" +#include "hcp_if.h" +#include "hipz_fns.h" + +static struct kmem_cache *qp_cache; + +/* + * attributes not supported by query qp + */ +#define QP_ATTR_QUERY_NOT_SUPPORTED (IB_QP_MAX_DEST_RD_ATOMIC | \ + IB_QP_MAX_QP_RD_ATOMIC | \ + IB_QP_ACCESS_FLAGS | \ + IB_QP_EN_SQD_ASYNC_NOTIFY) + +/* + * ehca (internal) qp state values + */ +enum ehca_qp_state { + EHCA_QPS_RESET = 1, + EHCA_QPS_INIT = 2, + EHCA_QPS_RTR = 3, + EHCA_QPS_RTS = 5, + EHCA_QPS_SQD = 6, + EHCA_QPS_SQE = 8, + EHCA_QPS_ERR = 128 +}; + +/* + * qp state transitions as defined by IB Arch Rel 1.1 page 431 + */ +enum ib_qp_statetrans { + IB_QPST_ANY2RESET, + IB_QPST_ANY2ERR, + IB_QPST_RESET2INIT, + IB_QPST_INIT2RTR, + IB_QPST_INIT2INIT, + IB_QPST_RTR2RTS, + IB_QPST_RTS2SQD, + IB_QPST_RTS2RTS, + IB_QPST_SQD2RTS, + IB_QPST_SQE2RTS, + IB_QPST_SQD2SQD, + IB_QPST_MAX /* nr of transitions, this must be last!!! */ +}; + +/* + * ib2ehca_qp_state maps IB to ehca qp_state + * returns ehca qp state corresponding to given ib qp state + */ +static inline enum ehca_qp_state ib2ehca_qp_state(enum ib_qp_state ib_qp_state) +{ + switch (ib_qp_state) { + case IB_QPS_RESET: + return EHCA_QPS_RESET; + case IB_QPS_INIT: + return EHCA_QPS_INIT; + case IB_QPS_RTR: + return EHCA_QPS_RTR; + case IB_QPS_RTS: + return EHCA_QPS_RTS; + case IB_QPS_SQD: + return EHCA_QPS_SQD; + case IB_QPS_SQE: + return EHCA_QPS_SQE; + case IB_QPS_ERR: + return EHCA_QPS_ERR; + default: + ehca_gen_err("invalid ib_qp_state=%x", ib_qp_state); + return -EINVAL; + } +} + +/* + * ehca2ib_qp_state maps ehca to IB qp_state + * returns ib qp state corresponding to given ehca qp state + */ +static inline enum ib_qp_state ehca2ib_qp_state(enum ehca_qp_state + ehca_qp_state) +{ + switch (ehca_qp_state) { + case EHCA_QPS_RESET: + return IB_QPS_RESET; + case EHCA_QPS_INIT: + return IB_QPS_INIT; + case EHCA_QPS_RTR: + return IB_QPS_RTR; + case EHCA_QPS_RTS: + return IB_QPS_RTS; + case EHCA_QPS_SQD: + return IB_QPS_SQD; + case EHCA_QPS_SQE: + return IB_QPS_SQE; + case EHCA_QPS_ERR: + return IB_QPS_ERR; + default: + ehca_gen_err("invalid ehca_qp_state=%x", ehca_qp_state); + return -EINVAL; + } +} + +/* + * ehca_qp_type used as index for req_attr and opt_attr of + * struct ehca_modqp_statetrans + */ +enum ehca_qp_type { + QPT_RC = 0, + QPT_UC = 1, + QPT_UD = 2, + QPT_SQP = 3, + QPT_MAX +}; + +/* + * ib2ehcaqptype maps Ib to ehca qp_type + * returns ehca qp type corresponding to ib qp type + */ +static inline enum ehca_qp_type ib2ehcaqptype(enum ib_qp_type ibqptype) +{ + switch (ibqptype) { + case IB_QPT_SMI: + case IB_QPT_GSI: + return QPT_SQP; + case IB_QPT_RC: + return QPT_RC; + case IB_QPT_UC: + return QPT_UC; + case IB_QPT_UD: + return QPT_UD; + default: + ehca_gen_err("Invalid ibqptype=%x", ibqptype); + return -EINVAL; + } +} + +static inline enum ib_qp_statetrans get_modqp_statetrans(int ib_fromstate, + int ib_tostate) +{ + int index = -EINVAL; + switch (ib_tostate) { + case IB_QPS_RESET: + index = IB_QPST_ANY2RESET; + break; + case IB_QPS_INIT: + switch (ib_fromstate) { + case IB_QPS_RESET: + index = IB_QPST_RESET2INIT; + break; + case IB_QPS_INIT: + index = IB_QPST_INIT2INIT; + break; + } + break; + case IB_QPS_RTR: + if (ib_fromstate == IB_QPS_INIT) + index = IB_QPST_INIT2RTR; + break; + case IB_QPS_RTS: + switch (ib_fromstate) { + case IB_QPS_RTR: + index = IB_QPST_RTR2RTS; + break; + case IB_QPS_RTS: + index = IB_QPST_RTS2RTS; + break; + case IB_QPS_SQD: + index = IB_QPST_SQD2RTS; + break; + case IB_QPS_SQE: + index = IB_QPST_SQE2RTS; + break; + } + break; + case IB_QPS_SQD: + if (ib_fromstate == IB_QPS_RTS) + index = IB_QPST_RTS2SQD; + break; + case IB_QPS_SQE: + break; + case IB_QPS_ERR: + index = IB_QPST_ANY2ERR; + break; + default: + break; + } + return index; +} + +enum ehca_service_type { + ST_RC = 0, + ST_UC = 1, + ST_RD = 2, + ST_UD = 3 +}; + +/* + * ibqptype2servicetype returns hcp service type corresponding to given + * ib qp type used by create_qp() + */ +static inline int ibqptype2servicetype(enum ib_qp_type ibqptype) +{ + switch (ibqptype) { + case IB_QPT_SMI: + case IB_QPT_GSI: + return ST_UD; + case IB_QPT_RC: + return ST_RC; + case IB_QPT_UC: + return ST_UC; + case IB_QPT_UD: + return ST_UD; + case IB_QPT_RAW_IPV6: + return -EINVAL; + case IB_QPT_RAW_ETY: + return -EINVAL; + default: + ehca_gen_err("Invalid ibqptype=%x", ibqptype); + return -EINVAL; + } +} + +/* + * init_qp_queues initializes/constructs r/squeue and registers queue pages. + */ +static inline int init_qp_queues(struct ehca_shca *shca, + struct ehca_qp *my_qp, + int nr_sq_pages, + int nr_rq_pages, + int swqe_size, + int rwqe_size, + int nr_send_sges, int nr_receive_sges) +{ + int ret, cnt, ipz_rc; + 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; + + ipz_rc = ipz_queue_ctor(&my_qp->ipz_squeue, + nr_sq_pages, + EHCA_PAGESIZE, swqe_size, nr_send_sges); + if (!ipz_rc) { + ehca_err(ib_dev,"Cannot allocate page for squeue. ipz_rc=%x", + ipz_rc); + return -EBUSY; + } + + ipz_rc = ipz_queue_ctor(&my_qp->ipz_rqueue, + nr_rq_pages, + EHCA_PAGESIZE, rwqe_size, nr_receive_sges); + if (!ipz_rc) { + ehca_err(ib_dev, "Cannot allocate page for rqueue. ipz_rc=%x", + ipz_rc); + ret = -EBUSY; + goto init_qp_queues0; + } + /* register SQ pages */ + for (cnt = 0; cnt < nr_sq_pages; cnt++) { + vpage = ipz_qpageit_get_inc(&my_qp->ipz_squeue); + if (!vpage) { + ehca_err(ib_dev, "SQ ipz_qpageit_get_inc() " + "failed p_vpage= %p", vpage); + ret = -EINVAL; + goto init_qp_queues1; + } + rpage = virt_to_abs(vpage); + + h_ret = hipz_h_register_rpage_qp(ipz_hca_handle, + my_qp->ipz_qp_handle, + &my_qp->pf, 0, 0, + rpage, 1, + my_qp->galpas.kernel); + if (h_ret < H_SUCCESS) { + ehca_err(ib_dev, "SQ hipz_qp_register_rpage()" + " failed rc=%lx", h_ret); + ret = ehca2ib_return_code(h_ret); + goto init_qp_queues1; + } + } + + ipz_qeit_reset(&my_qp->ipz_squeue); + + /* register RQ pages */ + for (cnt = 0; cnt < nr_rq_pages; cnt++) { + vpage = ipz_qpageit_get_inc(&my_qp->ipz_rqueue); + if (!vpage) { + ehca_err(ib_dev, "RQ ipz_qpageit_get_inc() " + "failed p_vpage = %p", vpage); + ret = -EINVAL; + goto init_qp_queues1; + } + + rpage = virt_to_abs(vpage); + + h_ret = hipz_h_register_rpage_qp(ipz_hca_handle, + my_qp->ipz_qp_handle, + &my_qp->pf, 0, 1, + rpage, 1,my_qp->galpas.kernel); + if (h_ret < H_SUCCESS) { + ehca_err(ib_dev, "RQ hipz_qp_register_rpage() failed " + "rc=%lx", h_ret); + ret = ehca2ib_return_code(h_ret); + goto init_qp_queues1; + } + if (cnt == (nr_rq_pages - 1)) { /* last page! */ + if (h_ret != H_SUCCESS) { + ehca_err(ib_dev, "RQ hipz_qp_register_rpage() " + "h_ret= %lx ", h_ret); + ret = ehca2ib_return_code(h_ret); + goto init_qp_queues1; + } + vpage = ipz_qpageit_get_inc(&my_qp->ipz_rqueue); + if (vpage) { + ehca_err(ib_dev, "ipz_qpageit_get_inc() " + "should not succeed vpage=%p", vpage); + ret = -EINVAL; + goto init_qp_queues1; + } + } else { + if (h_ret != H_PAGE_REGISTERED) { + ehca_err(ib_dev, "RQ hipz_qp_register_rpage() " + "h_ret= %lx ", h_ret); + ret = ehca2ib_return_code(h_ret); + goto init_qp_queues1; + } + } + } + + ipz_qeit_reset(&my_qp->ipz_rqueue); + + return 0; + +init_qp_queues1: + ipz_queue_dtor(&my_qp->ipz_rqueue); +init_qp_queues0: + ipz_queue_dtor(&my_qp->ipz_squeue); + return ret; +} + +struct ib_qp *ehca_create_qp(struct ib_pd *pd, + struct ib_qp_init_attr *init_attr, + struct ib_udata *udata) +{ + static int da_rc_msg_size[]={ 128, 256, 512, 1024, 2048, 4096 }; + static int da_ud_sq_msg_size[]={ 128, 384, 896, 1920, 3968 }; + struct ehca_qp *my_qp; + struct ehca_pd *my_pd = container_of(pd, struct ehca_pd, ib_pd); + struct ehca_shca *shca = container_of(pd->device, struct ehca_shca, + ib_device); + struct ib_ucontext *context = NULL; + u64 h_ret; + int max_send_sge, max_recv_sge, ret; + + /* h_call's out parameters */ + struct ehca_alloc_qp_parms parms; + u32 swqe_size = 0, rwqe_size = 0; + u8 daqp_completion, isdaqp; + unsigned long flags; + + if (init_attr->sq_sig_type != IB_SIGNAL_REQ_WR && + init_attr->sq_sig_type != IB_SIGNAL_ALL_WR) { + ehca_err(pd->device, "init_attr->sg_sig_type=%x not allowed", + init_attr->sq_sig_type); + return ERR_PTR(-EINVAL); + } + + /* save daqp completion bits */ + daqp_completion = init_attr->qp_type & 0x60; + /* save daqp bit */ + isdaqp = (init_attr->qp_type & 0x80) ? 1 : 0; + init_attr->qp_type = init_attr->qp_type & 0x1F; + + if (init_attr->qp_type != IB_QPT_UD && + init_attr->qp_type != IB_QPT_SMI && + init_attr->qp_type != IB_QPT_GSI && + init_attr->qp_type != IB_QPT_UC && + init_attr->qp_type != IB_QPT_RC) { + ehca_err(pd->device, "wrong QP Type=%x", init_attr->qp_type); + return ERR_PTR(-EINVAL); + } + if ((init_attr->qp_type != IB_QPT_RC && init_attr->qp_type != IB_QPT_UD) + && isdaqp) { + ehca_err(pd->device, "unsupported LL QP Type=%x", + init_attr->qp_type); + return ERR_PTR(-EINVAL); + } else if (init_attr->qp_type == IB_QPT_RC && isdaqp && + (init_attr->cap.max_send_wr > 255 || + init_attr->cap.max_recv_wr > 255 )) { + ehca_err(pd->device, "Invalid Number of max_sq_wr =%x " + "or max_rq_wr=%x for QP Type=%x", + init_attr->cap.max_send_wr, + init_attr->cap.max_recv_wr,init_attr->qp_type); + return ERR_PTR(-EINVAL); + } else if (init_attr->qp_type == IB_QPT_UD && isdaqp && + init_attr->cap.max_send_wr > 255) { + ehca_err(pd->device, + "Invalid Number of max_send_wr=%x for UD QP_TYPE=%x", + init_attr->cap.max_send_wr, init_attr->qp_type); + return ERR_PTR(-EINVAL); + } + + if (pd->uobject && udata) + context = pd->uobject->context; + + my_qp = kmem_cache_alloc(qp_cache, SLAB_KERNEL); + if (!my_qp) { + ehca_err(pd->device, "pd=%p not enough memory to alloc qp", pd); + return ERR_PTR(-ENOMEM); + } + + memset(my_qp, 0, sizeof(struct ehca_qp)); + memset (&parms, 0, sizeof(struct ehca_alloc_qp_parms)); + spin_lock_init(&my_qp->spinlock_s); + spin_lock_init(&my_qp->spinlock_r); + + my_qp->recv_cq = + container_of(init_attr->recv_cq, struct ehca_cq, ib_cq); + my_qp->send_cq = + container_of(init_attr->send_cq, struct ehca_cq, ib_cq); + + my_qp->init_attr = *init_attr; + + do { + if (!idr_pre_get(&ehca_qp_idr, GFP_KERNEL)) { + ret = -ENOMEM; + ehca_err(pd->device, "Can't reserve idr resources."); + goto create_qp_exit0; + } + + spin_lock_irqsave(&ehca_qp_idr_lock, flags); + ret = idr_get_new(&ehca_qp_idr, my_qp, &my_qp->token); + spin_unlock_irqrestore(&ehca_qp_idr_lock, flags); + + } while (ret == -EAGAIN); + + if (ret) { + ret = -ENOMEM; + ehca_err(pd->device, "Can't allocate new idr entry."); + goto create_qp_exit0; + } + + parms.servicetype = ibqptype2servicetype(init_attr->qp_type); + if (parms.servicetype < 0) { + ret = -EINVAL; + ehca_err(pd->device, "Invalid qp_type=%x", init_attr->qp_type); + goto create_qp_exit0; + } + + if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) + parms.sigtype = HCALL_SIGT_EVERY; + else + parms.sigtype = HCALL_SIGT_BY_WQE; + + /* UD_AV CIRCUMVENTION */ + max_send_sge = init_attr->cap.max_send_sge; + max_recv_sge = init_attr->cap.max_recv_sge; + if (IB_QPT_UD == init_attr->qp_type || + IB_QPT_GSI == init_attr->qp_type || + IB_QPT_SMI == init_attr->qp_type) { + max_send_sge += 2; + max_recv_sge += 2; + } + + parms.ipz_eq_handle = shca->eq.ipz_eq_handle; + parms.daqp_ctrl = isdaqp | daqp_completion; + parms.pd = my_pd->fw_pd; + parms.max_recv_sge = max_recv_sge; + parms.max_send_sge = max_send_sge; + + h_ret = hipz_h_alloc_resource_qp(shca->ipz_hca_handle, my_qp, &parms); + + if (h_ret != H_SUCCESS) { + ehca_err(pd->device, "h_alloc_resource_qp() failed h_ret=%lx", + h_ret); + ret = ehca2ib_return_code(h_ret); + goto create_qp_exit1; + } + + switch (init_attr->qp_type) { + case IB_QPT_RC: + if (isdaqp == 0) { + 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 daqp we need to use msg size, not wqe size */ + swqe_size = da_rc_msg_size[max_send_sge]; + rwqe_size = da_rc_msg_size[max_recv_sge]; + parms.act_nr_send_sges = 1; + parms.act_nr_recv_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 */ + parms.act_nr_recv_sges -= 2; + parms.act_nr_send_sges -= 2; + if (isdaqp) { + swqe_size = da_ud_sq_msg_size[max_send_sge]; + rwqe_size = da_rc_msg_size[max_recv_sge]; + parms.act_nr_send_sges = 1; + parms.act_nr_recv_sges = 1; + } else { + 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]); + } + + if (IB_QPT_GSI == init_attr->qp_type || + IB_QPT_SMI == init_attr->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; + my_qp->real_qp_num = + (init_attr->qp_type == IB_QPT_SMI) ? 0 : 1; + } + + break; + + default: + break; + } + + /* initializes r/squeue and registers queue pages */ + ret = init_qp_queues(shca, my_qp, + parms.nr_sq_pages, parms.nr_rq_pages, + swqe_size, rwqe_size, + parms.act_nr_send_sges, parms.act_nr_recv_sges); + if (ret) { + ehca_err(pd->device, + "Couldn't initialize r/squeue and pages ret=%x", ret); + goto create_qp_exit2; + } + + my_qp->ib_qp.pd = &my_pd->ib_pd; + my_qp->ib_qp.device = my_pd->ib_pd.device; + + my_qp->ib_qp.recv_cq = init_attr->recv_cq; + my_qp->ib_qp.send_cq = init_attr->send_cq; + + my_qp->ib_qp.qp_num = my_qp->real_qp_num; + my_qp->ib_qp.qp_type = init_attr->qp_type; + + my_qp->qp_type = init_attr->qp_type; + my_qp->ib_qp.srq = init_attr->srq; + + my_qp->ib_qp.qp_context = init_attr->qp_context; + my_qp->ib_qp.event_handler = init_attr->event_handler; + + 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; + + /* NOTE: define_apq0() not supported yet */ + if (init_attr->qp_type == IB_QPT_GSI) { + h_ret = ehca_define_sqp(shca, my_qp, init_attr); + if (h_ret != H_SUCCESS) { + ehca_err(pd->device, "ehca_define_sqp() failed rc=%lx", + h_ret); + ret = ehca2ib_return_code(h_ret); + goto create_qp_exit3; + } + } + if (init_attr->send_cq) { + struct ehca_cq *cq = container_of(init_attr->send_cq, + struct ehca_cq, ib_cq); + ret = ehca_cq_assign_qp(cq, my_qp); + if (ret) { + ehca_err(pd->device, "Couldn't assign qp to send_cq ret=%x", + ret); + goto create_qp_exit3; + } + my_qp->send_cq = cq; + } + /* copy queues, galpa data to user space */ + if (context && udata) { + struct ipz_queue *ipz_rqueue = &my_qp->ipz_rqueue; + struct ipz_queue *ipz_squeue = &my_qp->ipz_squeue; + struct ehca_create_qp_resp resp; + struct vm_area_struct * vma; + memset(&resp, 0, sizeof(resp)); + + resp.qp_num = my_qp->real_qp_num; + resp.token = my_qp->token; + resp.qp_type = my_qp->qp_type; + resp.qkey = my_qp->qkey; + resp.real_qp_num = my_qp->real_qp_num; + /* rqueue properties */ + resp.ipz_rqueue.qe_size = ipz_rqueue->qe_size; + resp.ipz_rqueue.act_nr_of_sg = ipz_rqueue->act_nr_of_sg; + resp.ipz_rqueue.queue_length = ipz_rqueue->queue_length; + resp.ipz_rqueue.pagesize = ipz_rqueue->pagesize; + resp.ipz_rqueue.toggle_state = ipz_rqueue->toggle_state; + ret = ehca_mmap_nopage(((u64)(my_qp->token) << 32) | 0x22000000, + ipz_rqueue->queue_length, + (void**)&resp.ipz_rqueue.queue, + &vma); + if (ret) { + ehca_err(pd->device, "Could not mmap rqueue pages"); + goto create_qp_exit3; + } + my_qp->uspace_rqueue = resp.ipz_rqueue.queue; + /* squeue properties */ + resp.ipz_squeue.qe_size = ipz_squeue->qe_size; + resp.ipz_squeue.act_nr_of_sg = ipz_squeue->act_nr_of_sg; + resp.ipz_squeue.queue_length = ipz_squeue->queue_length; + resp.ipz_squeue.pagesize = ipz_squeue->pagesize; + resp.ipz_squeue.toggle_state = ipz_squeue->toggle_state; + ret = ehca_mmap_nopage(((u64)(my_qp->token) << 32) | 0x23000000, + ipz_squeue->queue_length, + (void**)&resp.ipz_squeue.queue, + &vma); + if (ret) { + ehca_err(pd->device, "Could not mmap squeue pages"); + goto create_qp_exit4; + } + my_qp->uspace_squeue = resp.ipz_squeue.queue; + /* fw_handle */ + resp.galpas = my_qp->galpas; + ret = ehca_mmap_register(my_qp->galpas.user.fw_handle, + (void**)&resp.galpas.kernel.fw_handle, + &vma); + if (ret) { + ehca_err(pd->device, "Could not mmap fw_handle"); + goto create_qp_exit5; + } + my_qp->uspace_fwh = (u64)resp.galpas.kernel.fw_handle; + + if (ib_copy_to_udata(udata, &resp, sizeof resp)) { + ehca_err(pd->device, "Copy to udata failed"); + ret = -EINVAL; + goto create_qp_exit6; + } + } + + return &my_qp->ib_qp; + +create_qp_exit6: + ehca_munmap(my_qp->uspace_fwh, EHCA_PAGESIZE); + +create_qp_exit5: + ehca_munmap(my_qp->uspace_squeue, my_qp->ipz_squeue.queue_length); + +create_qp_exit4: + ehca_munmap(my_qp->uspace_rqueue, my_qp->ipz_rqueue.queue_length); + +create_qp_exit3: + ipz_queue_dtor(&my_qp->ipz_rqueue); + ipz_queue_dtor(&my_qp->ipz_squeue); + +create_qp_exit2: + hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp); + +create_qp_exit1: + spin_lock_irqsave(&ehca_qp_idr_lock, flags); + idr_remove(&ehca_qp_idr, my_qp->token); + spin_unlock_irqrestore(&ehca_qp_idr_lock, flags); + +create_qp_exit0: + kmem_cache_free(qp_cache, my_qp); + return ERR_PTR(ret); +} + +/* + * prepare_sqe_rts called by internal_modify_qp() at trans sqe -> rts + * set purge bit of bad wqe and subsequent wqes to avoid reentering sqe + * returns total number of bad wqes in bad_wqe_cnt + */ +static int prepare_sqe_rts(struct ehca_qp *my_qp, struct ehca_shca *shca, + int *bad_wqe_cnt) +{ + u64 h_ret; + struct ipz_queue *squeue; + void *bad_send_wqe_p, *bad_send_wqe_v; + void *squeue_start_p, *squeue_end_p; + void *squeue_start_v, *squeue_end_v; + struct ehca_wqe *wqe; + int qp_num = my_qp->ib_qp.qp_num; + + /* get send wqe pointer */ + h_ret = hipz_h_disable_and_get_wqe(shca->ipz_hca_handle, + my_qp->ipz_qp_handle, &my_qp->pf, + &bad_send_wqe_p, NULL, 2); + if (h_ret != H_SUCCESS) { + ehca_err(&shca->ib_device, "hipz_h_disable_and_get_wqe() failed" + " ehca_qp=%p qp_num=%x h_ret=%lx", + my_qp, qp_num, h_ret); + return ehca2ib_return_code(h_ret); + } + bad_send_wqe_p = (void*)((u64)bad_send_wqe_p & (~(1L<<63))); + ehca_dbg(&shca->ib_device, "qp_num=%x bad_send_wqe_p=%p", + qp_num, bad_send_wqe_p); + /* convert wqe pointer to vadr */ + bad_send_wqe_v = abs_to_virt((u64)bad_send_wqe_p); + if (ehca_debug_level) + ehca_dmp(bad_send_wqe_v, 32, "qp_num=%x bad_wqe", qp_num); + squeue = &my_qp->ipz_squeue; + squeue_start_p = (void*)virt_to_abs(ipz_qeit_calc(squeue, 0L)); + squeue_end_p = squeue_start_p+squeue->queue_length; + squeue_start_v = abs_to_virt((u64)squeue_start_p); + squeue_end_v = abs_to_virt((u64)squeue_end_p); + ehca_dbg(&shca->ib_device, "qp_num=%x squeue_start_v=%p squeue_end_v=%p", + qp_num, squeue_start_v, squeue_end_v); + + /* loop sets wqe's purge bit */ + wqe = (struct ehca_wqe*)bad_send_wqe_v; + *bad_wqe_cnt = 0; + while (wqe->optype != 0xff && wqe->wqef != 0xff) { + if (ehca_debug_level) + ehca_dmp(wqe, 32, "qp_num=%x wqe", qp_num); + wqe->nr_of_data_seg = 0; /* suppress data access */ + wqe->wqef = WQEF_PURGE; /* WQE to be purged */ + wqe = (struct ehca_wqe*)((u8*)wqe+squeue->qe_size); + *bad_wqe_cnt = (*bad_wqe_cnt)+1; + if ((void*)wqe >= squeue_end_v) { + wqe = squeue_start_v; + } + } + /* + * bad wqe will be reprocessed and ignored when pol_cq() is called, + * i.e. nr of wqes with flush error status is one less + */ + ehca_dbg(&shca->ib_device, "qp_num=%x flusherr_wqe_cnt=%x", + qp_num, (*bad_wqe_cnt)-1); + wqe->wqef = 0; + + return 0; +} + +/* + * internal_modify_qp with circumvention to handle aqp0 properly + * smi_reset2init indicates if this is an internal reset-to-init-call for + * smi. This flag must always be zero if called from ehca_modify_qp()! + * This internal func was intorduced to avoid recursion of ehca_modify_qp()! + */ +static int internal_modify_qp(struct ib_qp *ibqp, + struct ib_qp_attr *attr, + int attr_mask, int smi_reset2init) +{ + enum ib_qp_state qp_cur_state, qp_new_state; + int cnt, qp_attr_idx, ret = 0; + enum ib_qp_statetrans statetrans; + struct hcp_modify_qp_control_block *mqpcb; + struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp); + struct ehca_shca *shca = + container_of(ibqp->pd->device, struct ehca_shca, ib_device); + u64 update_mask; + u64 h_ret; + int bad_wqe_cnt = 0; + int squeue_locked = 0; + unsigned long spl_flags = 0; + + /* do query_qp to obtain current attr values */ + mqpcb = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL); + if (mqpcb == NULL) { + ehca_err(ibqp->device, "Could not get zeroed page for mqpcb " + "ehca_qp=%p qp_num=%x ", my_qp, ibqp->qp_num); + return -ENOMEM; + } + + h_ret = hipz_h_query_qp(shca->ipz_hca_handle, + my_qp->ipz_qp_handle, + &my_qp->pf, + mqpcb, my_qp->galpas.kernel); + if (h_ret != H_SUCCESS) { + ehca_err(ibqp->device, "hipz_h_query_qp() failed " + "ehca_qp=%p qp_num=%x h_ret=%lx", + my_qp, ibqp->qp_num, h_ret); + ret = ehca2ib_return_code(h_ret); + goto modify_qp_exit1; + } + + qp_cur_state = ehca2ib_qp_state(mqpcb->qp_state); + + if (qp_cur_state == -EINVAL) { /* invalid qp state */ + ret = -EINVAL; + ehca_err(ibqp->device, "Invalid current ehca_qp_state=%x " + "ehca_qp=%p qp_num=%x", + mqpcb->qp_state, my_qp, ibqp->qp_num); + goto modify_qp_exit1; + } + /* + * circumvention to set aqp0 initial state to init + * as expected by IB spec + */ + if (smi_reset2init == 0 && + ibqp->qp_type == IB_QPT_SMI && + qp_cur_state == IB_QPS_RESET && + (attr_mask & IB_QP_STATE) && + attr->qp_state == IB_QPS_INIT) { /* RESET -> INIT */ + struct ib_qp_attr smiqp_attr = { + .qp_state = IB_QPS_INIT, + .port_num = my_qp->init_attr.port_num, + .pkey_index = 0, + .qkey = 0 + }; + int smiqp_attr_mask = IB_QP_STATE | IB_QP_PORT | + IB_QP_PKEY_INDEX | IB_QP_QKEY; + int smirc = internal_modify_qp( + ibqp, &smiqp_attr, smiqp_attr_mask, 1); + if (smirc) { + ehca_err(ibqp->device, "SMI RESET -> INIT failed. " + "ehca_modify_qp() rc=%x", smirc); + ret = H_PARAMETER; + goto modify_qp_exit1; + } + qp_cur_state = IB_QPS_INIT; + ehca_dbg(ibqp->device, "SMI RESET -> INIT succeeded"); + } + /* is transmitted current state equal to "real" current state */ + if ((attr_mask & IB_QP_CUR_STATE) && + qp_cur_state != attr->cur_qp_state) { + ret = -EINVAL; + ehca_err(ibqp->device, + "Invalid IB_QP_CUR_STATE attr->curr_qp_state=%x <>" + " actual cur_qp_state=%x. ehca_qp=%p qp_num=%x", + attr->cur_qp_state, qp_cur_state, my_qp, ibqp->qp_num); + goto modify_qp_exit1; + } + + ehca_dbg(ibqp->device,"ehca_qp=%p qp_num=%x current qp_state=%x " + "new qp_state=%x attribute_mask=%x", + my_qp, ibqp->qp_num, qp_cur_state, attr->qp_state, attr_mask); + + qp_new_state = attr_mask & IB_QP_STATE ? attr->qp_state : qp_cur_state; + if (!smi_reset2init && + !ib_modify_qp_is_ok(qp_cur_state, qp_new_state, ibqp->qp_type, + attr_mask)) { + ret = -EINVAL; + ehca_err(ibqp->device, + "Invalid qp transition new_state=%x cur_state=%x " + "ehca_qp=%p qp_num=%x attr_mask=%x", qp_new_state, + qp_cur_state, my_qp, ibqp->qp_num, attr_mask); + goto modify_qp_exit1; + } + + if ((mqpcb->qp_state = ib2ehca_qp_state(qp_new_state))) + update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_STATE, 1); + else { + ret = -EINVAL; + ehca_err(ibqp->device, "Invalid new qp state=%x " + "ehca_qp=%p qp_num=%x", + qp_new_state, my_qp, ibqp->qp_num); + goto modify_qp_exit1; + } + + /* retrieve state transition struct to get req and opt attrs */ + statetrans = get_modqp_statetrans(qp_cur_state, qp_new_state); + if (statetrans < 0) { + ret = -EINVAL; + ehca_err(ibqp->device, "<INVALID STATE CHANGE> qp_cur_state=%x " + "new_qp_state=%x State_xsition=%x ehca_qp=%p " + "qp_num=%x", qp_cur_state, qp_new_state, + statetrans, my_qp, ibqp->qp_num); + goto modify_qp_exit1; + } + + qp_attr_idx = ib2ehcaqptype(ibqp->qp_type); + + if (qp_attr_idx < 0) { + ret = qp_attr_idx; + ehca_err(ibqp->device, + "Invalid QP type=%x ehca_qp=%p qp_num=%x", + ibqp->qp_type, my_qp, ibqp->qp_num); + goto modify_qp_exit1; + } + + ehca_dbg(ibqp->device, + "ehca_qp=%p qp_num=%x <VALID STATE CHANGE> qp_state_xsit=%x", + my_qp, ibqp->qp_num, statetrans); + + /* sqe -> rts: set purge bit of bad wqe before actual trans */ + if ((my_qp->qp_type == IB_QPT_UD || + my_qp->qp_type == IB_QPT_GSI || + my_qp->qp_type == IB_QPT_SMI) && + statetrans == IB_QPST_SQE2RTS) { + /* mark next free wqe if kernel */ + if (my_qp->uspace_squeue == 0) { + struct ehca_wqe *wqe; + /* lock send queue */ + spin_lock_irqsave(&my_qp->spinlock_s, spl_flags); + squeue_locked = 1; + /* mark next free wqe */ + wqe = (struct ehca_wqe*) + ipz_qeit_get(&my_qp->ipz_squeue); + wqe->optype = wqe->wqef = 0xff; + ehca_dbg(ibqp->device, "qp_num=%x next_free_wqe=%p", + ibqp->qp_num, wqe); + } + ret = prepare_sqe_rts(my_qp, shca, &bad_wqe_cnt); + if (ret) { + ehca_err(ibqp->device, "prepare_sqe_rts() failed " + "ehca_qp=%p qp_num=%x ret=%x", + my_qp, ibqp->qp_num, ret); + goto modify_qp_exit2; + } + } + + /* + * enable RDMA_Atomic_Control if reset->init und reliable con + * this is necessary since gen2 does not provide that flag, + * but pHyp requires it + */ + if (statetrans == IB_QPST_RESET2INIT && + (ibqp->qp_type == IB_QPT_RC || ibqp->qp_type == IB_QPT_UC)) { + mqpcb->rdma_atomic_ctrl = 3; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RDMA_ATOMIC_CTRL, 1); + } + /* circ. pHyp requires #RDMA/Atomic Resp Res for UC INIT -> RTR */ + if (statetrans == IB_QPST_INIT2RTR && + (ibqp->qp_type == IB_QPT_UC) && + !(attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)) { + mqpcb->rdma_nr_atomic_resp_res = 1; /* default to 1 */ + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES, 1); + } + + if (attr_mask & IB_QP_PKEY_INDEX) { + mqpcb->prim_p_key_idx = attr->pkey_index; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_P_KEY_IDX, 1); + } + if (attr_mask & IB_QP_PORT) { + if (attr->port_num < 1 || attr->port_num > shca->num_ports) { + ret = -EINVAL; + ehca_err(ibqp->device, "Invalid port=%x. " + "ehca_qp=%p qp_num=%x num_ports=%x", + attr->port_num, my_qp, ibqp->qp_num, + shca->num_ports); + goto modify_qp_exit2; + } + mqpcb->prim_phys_port = attr->port_num; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_PHYS_PORT, 1); + } + if (attr_mask & IB_QP_QKEY) { + mqpcb->qkey = attr->qkey; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_QKEY, 1); + } + if (attr_mask & IB_QP_AV) { + int ah_mult = ib_rate_to_mult(attr->ah_attr.static_rate); + int ehca_mult = ib_rate_to_mult(shca->sport[my_qp-> + init_attr.port_num].rate); + + mqpcb->dlid = attr->ah_attr.dlid; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DLID, 1); + mqpcb->source_path_bits = attr->ah_attr.src_path_bits; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS, 1); + mqpcb->service_level = attr->ah_attr.sl; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL, 1); + + if (ah_mult < ehca_mult) + mqpcb->max_static_rate = (ah_mult > 0) ? + ((ehca_mult - 1) / ah_mult) : 0; + else + mqpcb->max_static_rate = 0; + + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE, 1); + + /* + * only if GRH is TRUE we might consider SOURCE_GID_IDX + * and DEST_GID otherwise phype will return H_ATTR_PARM!!! + */ + if (attr->ah_attr.ah_flags == IB_AH_GRH) { + mqpcb->send_grh_flag = 1 << 31; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG, 1); + mqpcb->source_gid_idx = attr->ah_attr.grh.sgid_index; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX, 1); + + for (cnt = 0; cnt < 16; cnt++) + mqpcb->dest_gid.byte[cnt] = + attr->ah_attr.grh.dgid.raw[cnt]; + + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DEST_GID, 1); + mqpcb->flow_label = attr->ah_attr.grh.flow_label; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL, 1); + mqpcb->hop_limit = attr->ah_attr.grh.hop_limit; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT, 1); + mqpcb->traffic_class = attr->ah_attr.grh.traffic_class; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS, 1); + } + } + + if (attr_mask & IB_QP_PATH_MTU) { + mqpcb->path_mtu = attr->path_mtu; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PATH_MTU, 1); + } + if (attr_mask & IB_QP_TIMEOUT) { + mqpcb->timeout = attr->timeout; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_TIMEOUT, 1); + } + if (attr_mask & IB_QP_RETRY_CNT) { + mqpcb->retry_count = attr->retry_cnt; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RETRY_COUNT, 1); + } + if (attr_mask & IB_QP_RNR_RETRY) { + mqpcb->rnr_retry_count = attr->rnr_retry; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RNR_RETRY_COUNT, 1); + } + if (attr_mask & IB_QP_RQ_PSN) { + mqpcb->receive_psn = attr->rq_psn; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RECEIVE_PSN, 1); + } + if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { + mqpcb->rdma_nr_atomic_resp_res = attr->max_dest_rd_atomic < 3 ? + attr->max_dest_rd_atomic : 2; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES, 1); + } + if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { + mqpcb->rdma_atomic_outst_dest_qp = attr->max_rd_atomic < 3 ? + attr->max_rd_atomic : 2; + update_mask |= + EHCA_BMASK_SET + (MQPCB_MASK_RDMA_ATOMIC_OUTST_DEST_QP, 1); + } + if (attr_mask & IB_QP_ALT_PATH) { + int ah_mult = ib_rate_to_mult(attr->alt_ah_attr.static_rate); + int ehca_mult = ib_rate_to_mult( + shca->sport[my_qp->init_attr.port_num].rate); + + mqpcb->dlid_al = attr->alt_ah_attr.dlid; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DLID_AL, 1); + mqpcb->source_path_bits_al = attr->alt_ah_attr.src_path_bits; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS_AL, 1); + mqpcb->service_level_al = attr->alt_ah_attr.sl; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL_AL, 1); + + if (ah_mult < ehca_mult) + mqpcb->max_static_rate = (ah_mult > 0) ? + ((ehca_mult - 1) / ah_mult) : 0; + else + mqpcb->max_static_rate_al = 0; + + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE_AL, 1); + + /* + * only if GRH is TRUE we might consider SOURCE_GID_IDX + * and DEST_GID otherwise phype will return H_ATTR_PARM!!! + */ + if (attr->alt_ah_attr.ah_flags == IB_AH_GRH) { + mqpcb->send_grh_flag_al = 1 << 31; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG_AL, 1); + mqpcb->source_gid_idx_al = + attr->alt_ah_attr.grh.sgid_index; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX_AL, 1); + + for (cnt = 0; cnt < 16; cnt++) + mqpcb->dest_gid_al.byte[cnt] = + attr->alt_ah_attr.grh.dgid.raw[cnt]; + + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_DEST_GID_AL, 1); + mqpcb->flow_label_al = attr->alt_ah_attr.grh.flow_label; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL_AL, 1); + mqpcb->hop_limit_al = attr->alt_ah_attr.grh.hop_limit; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT_AL, 1); + mqpcb->traffic_class_al = + attr->alt_ah_attr.grh.traffic_class; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS_AL, 1); + } + } + + if (attr_mask & IB_QP_MIN_RNR_TIMER) { + mqpcb->min_rnr_nak_timer_field = attr->min_rnr_timer; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_MIN_RNR_NAK_TIMER_FIELD, 1); + } + + if (attr_mask & IB_QP_SQ_PSN) { + mqpcb->send_psn = attr->sq_psn; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_PSN, 1); + } + + if (attr_mask & IB_QP_DEST_QPN) { + mqpcb->dest_qp_nr = attr->dest_qp_num; + update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DEST_QP_NR, 1); + } + + if (attr_mask & IB_QP_PATH_MIG_STATE) { + mqpcb->path_migration_state = attr->path_mig_state; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_PATH_MIGRATION_STATE, 1); + } + + if (attr_mask & IB_QP_CAP) { + mqpcb->max_nr_outst_send_wr = attr->cap.max_send_wr+1; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_MAX_NR_OUTST_SEND_WR, 1); + mqpcb->max_nr_outst_recv_wr = attr->cap.max_recv_wr+1; + update_mask |= + EHCA_BMASK_SET(MQPCB_MASK_MAX_NR_OUTST_RECV_WR, 1); + /* no support for max_send/recv_sge yet */ + } + + if (ehca_debug_level) + ehca_dmp(mqpcb, 4*70, "qp_num=%x", ibqp->qp_num); + + h_ret = hipz_h_modify_qp(shca->ipz_hca_handle, + my_qp->ipz_qp_handle, + &my_qp->pf, + update_mask, + mqpcb, my_qp->galpas.kernel); + + if (h_ret != H_SUCCESS) { + ret = ehca2ib_return_code(h_ret); + ehca_err(ibqp->device, "hipz_h_modify_qp() failed rc=%lx " + "ehca_qp=%p qp_num=%x",h_ret, my_qp, ibqp->qp_num); + goto modify_qp_exit2; + } + + if ((my_qp->qp_type == IB_QPT_UD || + my_qp->qp_type == IB_QPT_GSI || + my_qp->qp_type == IB_QPT_SMI) && + statetrans == IB_QPST_SQE2RTS) { + /* doorbell to reprocessing wqes */ + iosync(); /* serialize GAL register access */ + hipz_update_sqa(my_qp, bad_wqe_cnt-1); + ehca_gen_dbg("doorbell for %x wqes", bad_wqe_cnt); + } + + if (statetrans == IB_QPST_RESET2INIT || + statetrans == IB_QPST_INIT2INIT) { + mqpcb->qp_enable = 1; + mqpcb->qp_state = EHCA_QPS_INIT; + update_mask = 0; + update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_ENABLE, 1); + + h_ret = hipz_h_modify_qp(shca->ipz_hca_handle, + my_qp->ipz_qp_handle, + &my_qp->pf, + update_mask, + mqpcb, + my_qp->galpas.kernel); + + if (h_ret != H_SUCCESS) { + ret = ehca2ib_return_code(h_ret); + ehca_err(ibqp->device, "ENABLE in context of " + "RESET_2_INIT failed! Maybe you didn't get " + "a LID h_ret=%lx ehca_qp=%p qp_num=%x", + h_ret, my_qp, ibqp->qp_num); + goto modify_qp_exit2; + } + } + + if (statetrans == IB_QPST_ANY2RESET) { + ipz_qeit_reset(&my_qp->ipz_rqueue); + ipz_qeit_reset(&my_qp->ipz_squeue); + } + + if (attr_mask & IB_QP_QKEY) + my_qp->qkey = attr->qkey; + +modify_qp_exit2: + if (squeue_locked) { /* this means: sqe -> rts */ + spin_unlock_irqrestore(&my_qp->spinlock_s, spl_flags); + my_qp->sqerr_purgeflag = 1; + } + +modify_qp_exit1: + kfree(mqpcb); + + return ret; +} + +int ehca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, + struct ib_udata *udata) +{ + struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp); + struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd, + ib_pd); + u32 cur_pid = current->tgid; + + if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context && + my_pd->ownpid != cur_pid) { + ehca_err(ibqp->pd->device, "Invalid caller pid=%x ownpid=%x", + cur_pid, my_pd->ownpid); + return -EINVAL; + } + + return internal_modify_qp(ibqp, attr, attr_mask, 0); +} + +int ehca_query_qp(struct ib_qp *qp, + struct ib_qp_attr *qp_attr, + int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr) +{ + struct ehca_qp *my_qp = container_of(qp, struct ehca_qp, ib_qp); + struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd, + ib_pd); + struct ehca_shca *shca = container_of(qp->device, struct ehca_shca, + ib_device); + struct ipz_adapter_handle adapter_handle = shca->ipz_hca_handle; + struct hcp_modify_qp_control_block *qpcb; + u32 cur_pid = current->tgid; + int cnt, ret = 0; + u64 h_ret; + + if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context && + my_pd->ownpid != cur_pid) { + ehca_err(qp->device, "Invalid caller pid=%x ownpid=%x", + cur_pid, my_pd->ownpid); + return -EINVAL; + } + + if (qp_attr_mask & QP_ATTR_QUERY_NOT_SUPPORTED) { + ehca_err(qp->device,"Invalid attribute mask " + "ehca_qp=%p qp_num=%x qp_attr_mask=%x ", + my_qp, qp->qp_num, qp_attr_mask); + return -EINVAL; + } + + qpcb = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL ); + if (!qpcb) { + ehca_err(qp->device,"Out of memory for qpcb " + "ehca_qp=%p qp_num=%x", my_qp, qp->qp_num); + return -ENOMEM; + } + + h_ret = hipz_h_query_qp(adapter_handle, + my_qp->ipz_qp_handle, + &my_qp->pf, + qpcb, my_qp->galpas.kernel); + + if (h_ret != H_SUCCESS) { + ret = ehca2ib_return_code(h_ret); + ehca_err(qp->device,"hipz_h_query_qp() failed " + "ehca_qp=%p qp_num=%x h_ret=%lx", + my_qp, qp->qp_num, h_ret); + goto query_qp_exit1; + } + + qp_attr->cur_qp_state = ehca2ib_qp_state(qpcb->qp_state); + qp_attr->qp_state = qp_attr->cur_qp_state; + + if (qp_attr->cur_qp_state == -EINVAL) { + ret = -EINVAL; + ehca_err(qp->device,"Got invalid ehca_qp_state=%x " + "ehca_qp=%p qp_num=%x", + qpcb->qp_state, my_qp, qp->qp_num); + goto query_qp_exit1; + } + + if (qp_attr->qp_state == IB_QPS_SQD) + qp_attr->sq_draining = 1; + + qp_attr->qkey = qpcb->qkey; + qp_attr->path_mtu = qpcb->path_mtu; + qp_attr->path_mig_state = qpcb->path_migration_state; + qp_attr->rq_psn = qpcb->receive_psn; + qp_attr->sq_psn = qpcb->send_psn; + qp_attr->min_rnr_timer = qpcb->min_rnr_nak_timer_field; + qp_attr->cap.max_send_wr = qpcb->max_nr_outst_send_wr-1; + qp_attr->cap.max_recv_wr = qpcb->max_nr_outst_recv_wr-1; + /* UD_AV CIRCUMVENTION */ + if (my_qp->qp_type == IB_QPT_UD) { + qp_attr->cap.max_send_sge = + qpcb->actual_nr_sges_in_sq_wqe - 2; + qp_attr->cap.max_recv_sge = + qpcb->actual_nr_sges_in_rq_wqe - 2; + } else { + qp_attr->cap.max_send_sge = + qpcb->actual_nr_sges_in_sq_wqe; + qp_attr->cap.max_recv_sge = + qpcb->actual_nr_sges_in_rq_wqe; + } + + qp_attr->cap.max_inline_data = my_qp->sq_max_inline_data_size; + qp_attr->dest_qp_num = qpcb->dest_qp_nr; + + qp_attr->pkey_index = + EHCA_BMASK_GET(MQPCB_PRIM_P_KEY_IDX, qpcb->prim_p_key_idx); + + qp_attr->port_num = + EHCA_BMASK_GET(MQPCB_PRIM_PHYS_PORT, qpcb->prim_phys_port); + + qp_attr->timeout = qpcb->timeout; + qp_attr->retry_cnt = qpcb->retry_count; + qp_attr->rnr_retry = qpcb->rnr_retry_count; + + qp_attr->alt_pkey_index = + EHCA_BMASK_GET(MQPCB_PRIM_P_KEY_IDX, qpcb->alt_p_key_idx); + + qp_attr->alt_port_num = qpcb->alt_phys_port; + qp_attr->alt_timeout = qpcb->timeout_al; + + /* primary av */ + qp_attr->ah_attr.sl = qpcb->service_level; + + if (qpcb->send_grh_flag) { + qp_attr->ah_attr.ah_flags = IB_AH_GRH; + } + + qp_attr->ah_attr.static_rate = qpcb->max_static_rate; + qp_attr->ah_attr.dlid = qpcb->dlid; + qp_attr->ah_attr.src_path_bits = qpcb->source_path_bits; + qp_attr->ah_attr.port_num = qp_attr->port_num; + + /* primary GRH */ + qp_attr->ah_attr.grh.traffic_class = qpcb->traffic_class; + qp_attr->ah_attr.grh.hop_limit = qpcb->hop_limit; + qp_attr->ah_attr.grh.sgid_index = qpcb->source_gid_idx; + qp_attr->ah_attr.grh.flow_label = qpcb->flow_label; + + for (cnt = 0; cnt < 16; cnt++) + qp_attr->ah_attr.grh.dgid.raw[cnt] = + qpcb->dest_gid.byte[cnt]; + + /* alternate AV */ + qp_attr->alt_ah_attr.sl = qpcb->service_level_al; + if (qpcb->send_grh_flag_al) { + qp_attr->alt_ah_attr.ah_flags = IB_AH_GRH; + } + + qp_attr->alt_ah_attr.static_rate = qpcb->max_static_rate_al; + qp_attr->alt_ah_attr.dlid = qpcb->dlid_al; + qp_attr->alt_ah_attr.src_path_bits = qpcb->source_path_bits_al; + + /* alternate GRH */ + qp_attr->alt_ah_attr.grh.traffic_class = qpcb->traffic_class_al; + qp_attr->alt_ah_attr.grh.hop_limit = qpcb->hop_limit_al; + qp_attr->alt_ah_attr.grh.sgid_index = qpcb->source_gid_idx_al; + qp_attr->alt_ah_attr.grh.flow_label = qpcb->flow_label_al; + + for (cnt = 0; cnt < 16; cnt++) + qp_attr->alt_ah_attr.grh.dgid.raw[cnt] = + qpcb->dest_gid_al.byte[cnt]; + + /* return init attributes given in ehca_create_qp */ + if (qp_init_attr) + *qp_init_attr = my_qp->init_attr; + + if (ehca_debug_level) + ehca_dmp(qpcb, 4*70, "qp_num=%x", qp->qp_num); + +query_qp_exit1: + kfree(qpcb); + + return ret; +} + +int ehca_destroy_qp(struct ib_qp *ibqp) +{ + struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp); + struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca, + ib_device); + struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd, + ib_pd); + u32 cur_pid = current->tgid; + u32 qp_num = ibqp->qp_num; + int ret; + u64 h_ret; + u8 port_num; + enum ib_qp_type qp_type; + unsigned long flags; + + if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context && + my_pd->ownpid != cur_pid) { + ehca_err(ibqp->device, "Invalid caller pid=%x ownpid=%x", + cur_pid, my_pd->ownpid); + return -EINVAL; + } + + if (my_qp->send_cq) { + ret = ehca_cq_unassign_qp(my_qp->send_cq, + my_qp->real_qp_num); + if (ret) { + ehca_err(ibqp->device, "Couldn't unassign qp from " + "send_cq ret=%x qp_num=%x cq_num=%x", ret, + my_qp->ib_qp.qp_num, my_qp->send_cq->cq_number); + return ret; + } + } + + spin_lock_irqsave(&ehca_qp_idr_lock, flags); + idr_remove(&ehca_qp_idr, my_qp->token); + spin_unlock_irqrestore(&ehca_qp_idr_lock, flags); + + /* un-mmap if vma alloc */ + if (my_qp->uspace_rqueue) { + ret = ehca_munmap(my_qp->uspace_rqueue, + my_qp->ipz_rqueue.queue_length); + if (ret) + ehca_err(ibqp->device, "Could not munmap rqueue " + "qp_num=%x", qp_num); + ret = ehca_munmap(my_qp->uspace_squeue, + my_qp->ipz_squeue.queue_length); + if (ret) + ehca_err(ibqp->device, "Could not munmap squeue " + "qp_num=%x", qp_num); + ret = ehca_munmap(my_qp->uspace_fwh, EHCA_PAGESIZE); + if (ret) + ehca_err(ibqp->device, "Could not munmap fwh qp_num=%x", + qp_num); + } + + h_ret = hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp); + if (h_ret != H_SUCCESS) { + ehca_err(ibqp->device, "hipz_h_destroy_qp() failed rc=%lx " + "ehca_qp=%p qp_num=%x", h_ret, my_qp, qp_num); + return ehca2ib_return_code(h_ret); + } + + port_num = my_qp->init_attr.port_num; + qp_type = my_qp->init_attr.qp_type; + + /* no support for IB_QPT_SMI yet */ + if (qp_type == IB_QPT_GSI) { + struct ib_event event; + ehca_info(ibqp->device, "device %s: port %x is inactive.", + shca->ib_device.name, port_num); + event.device = &shca->ib_device; + event.event = IB_EVENT_PORT_ERR; + event.element.port_num = port_num; + shca->sport[port_num - 1].port_state = IB_PORT_DOWN; + ib_dispatch_event(&event); + } + + ipz_queue_dtor(&my_qp->ipz_rqueue); + ipz_queue_dtor(&my_qp->ipz_squeue); + kmem_cache_free(qp_cache, my_qp); + return 0; +} + +int ehca_init_qp_cache(void) +{ + qp_cache = kmem_cache_create("ehca_cache_qp", + sizeof(struct ehca_qp), 0, + SLAB_HWCACHE_ALIGN, + NULL, NULL); + if (!qp_cache) + return -ENOMEM; + return 0; +} + +void ehca_cleanup_qp_cache(void) +{ + if (qp_cache) + kmem_cache_destroy(qp_cache); +} |
