IB/ehca: add Shared Receive Queue support
authorJoachim Fenkes <fenkes@de.ibm.com>
Mon, 9 Jul 2007 13:25:10 +0000 (15:25 +0200)
committerRoland Dreier <rolandd@cisco.com>
Tue, 10 Jul 2007 03:12:27 +0000 (20:12 -0700)
Support SRQs on eHCA2. Since an SRQ is a QP for eHCA2, a lot of code
(structures, create, destroy, post_recv) can be shared between QP and SRQ.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
drivers/infiniband/hw/ehca/ehca_classes.h
drivers/infiniband/hw/ehca/ehca_classes_pSeries.h
drivers/infiniband/hw/ehca/ehca_iverbs.h
drivers/infiniband/hw/ehca/ehca_main.c
drivers/infiniband/hw/ehca/ehca_qp.c
drivers/infiniband/hw/ehca/ehca_reqs.c
drivers/infiniband/hw/ehca/ehca_uverbs.c
drivers/infiniband/hw/ehca/hcp_if.c
drivers/infiniband/hw/ehca/hipz_hw.h

index 6e75db68996ed10a20edead0f6467d6871277221..9d689aeb928a4030a8033ec8d8e9e1b64812e7cf 100644 (file)
@@ -5,6 +5,7 @@
  *
  *  Authors: Heiko J Schick <schickhj@de.ibm.com>
  *           Christoph Raisch <raisch@de.ibm.com>
+ *           Joachim Fenkes <fenkes@de.ibm.com>
  *
  *  Copyright (c) 2005 IBM Corporation
  *
@@ -117,9 +118,20 @@ struct ehca_pd {
        u32 ownpid;
 };
 
+enum ehca_ext_qp_type {
+       EQPT_NORMAL    = 0,
+       EQPT_LLQP      = 1,
+       EQPT_SRQBASE   = 2,
+       EQPT_SRQ       = 3,
+};
+
 struct ehca_qp {
-       struct ib_qp ib_qp;
+       union {
+               struct ib_qp ib_qp;
+               struct ib_srq ib_srq;
+       };
        u32 qp_type;
+       enum ehca_ext_qp_type ext_type;
        struct ipz_queue ipz_squeue;
        struct ipz_queue ipz_rqueue;
        struct h_galpas galpas;
@@ -142,6 +154,10 @@ struct ehca_qp {
        u32 mm_count_galpa;
 };
 
+#define IS_SRQ(qp) (qp->ext_type == EQPT_SRQ)
+#define HAS_SQ(qp) (qp->ext_type != EQPT_SRQ)
+#define HAS_RQ(qp) (qp->ext_type != EQPT_SRQBASE)
+
 /* must be power of 2 */
 #define QP_HASHTAB_LEN 8
 
@@ -307,6 +323,7 @@ struct ehca_create_qp_resp {
        u32 qp_num;
        u32 token;
        u32 qp_type;
+       u32 ext_type;
        u32 qkey;
        /* qp_num assigned by ehca: sqp0/1 may have got different numbers */
        u32 real_qp_num;
@@ -329,13 +346,6 @@ enum ehca_service_type {
        ST_UD  = 3,
 };
 
-enum ehca_ext_qp_type {
-       EQPT_NORMAL    = 0,
-       EQPT_LLQP      = 1,
-       EQPT_SRQBASE   = 2,
-       EQPT_SRQ       = 3,
-};
-
 enum ehca_ll_comp_flags {
        LLQP_SEND_COMP = 0x20,
        LLQP_RECV_COMP = 0x40,
index 5665f213b81a2ec11309ad0d8a9d0bddf0a4a785..fb3df5c271e7e144d5ffb344296ba9a9a775adab 100644 (file)
@@ -228,8 +228,8 @@ struct hcp_modify_qp_control_block {
 #define MQPCB_QP_NUMBER                         EHCA_BMASK_IBM(8,31)
 #define MQPCB_MASK_QP_ENABLE                    EHCA_BMASK_IBM(48,48)
 #define MQPCB_QP_ENABLE                         EHCA_BMASK_IBM(31,31)
-#define MQPCB_MASK_CURR_SQR_LIMIT               EHCA_BMASK_IBM(49,49)
-#define MQPCB_CURR_SQR_LIMIT                    EHCA_BMASK_IBM(15,31)
+#define MQPCB_MASK_CURR_SRQ_LIMIT               EHCA_BMASK_IBM(49,49)
+#define MQPCB_CURR_SRQ_LIMIT                    EHCA_BMASK_IBM(16,31)
 #define MQPCB_MASK_QP_AFF_ASYN_EV_LOG_REG       EHCA_BMASK_IBM(50,50)
 #define MQPCB_MASK_SHARED_RQ_HNDL               EHCA_BMASK_IBM(51,51)
 
index 37e7fe0908cfad268e8da90142f9d6f8aeaa85ec..fd84a804814c87afd3fa0707b7eacfb1d4e255d7 100644 (file)
@@ -154,6 +154,21 @@ int ehca_post_send(struct ib_qp *qp, struct ib_send_wr *send_wr,
 int ehca_post_recv(struct ib_qp *qp, struct ib_recv_wr *recv_wr,
                   struct ib_recv_wr **bad_recv_wr);
 
+int ehca_post_srq_recv(struct ib_srq *srq,
+                      struct ib_recv_wr *recv_wr,
+                      struct ib_recv_wr **bad_recv_wr);
+
+struct ib_srq *ehca_create_srq(struct ib_pd *pd,
+                              struct ib_srq_init_attr *init_attr,
+                              struct ib_udata *udata);
+
+int ehca_modify_srq(struct ib_srq *srq, struct ib_srq_attr *attr,
+                   enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
+
+int ehca_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
+
+int ehca_destroy_srq(struct ib_srq *srq);
+
 u64 ehca_define_sqp(struct ehca_shca *shca, struct ehca_qp *ibqp,
                    struct ib_qp_init_attr *qp_init_attr);
 
index eb22a6b296d9bbd15f213eff6d1ee8bba6bd305a..ca215bac974261bcb90aacbd8c6ac3dc55c4577c 100644 (file)
@@ -343,7 +343,7 @@ int ehca_init_device(struct ehca_shca *shca)
        strlcpy(shca->ib_device.name, "ehca%d", IB_DEVICE_NAME_MAX);
        shca->ib_device.owner               = THIS_MODULE;
 
-       shca->ib_device.uverbs_abi_ver      = 6;
+       shca->ib_device.uverbs_abi_ver      = 7;
        shca->ib_device.uverbs_cmd_mask     =
                (1ull << IB_USER_VERBS_CMD_GET_CONTEXT)         |
                (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE)        |
@@ -411,6 +411,20 @@ int ehca_init_device(struct ehca_shca *shca)
        /* shca->ib_device.process_mad      = ehca_process_mad;     */
        shca->ib_device.mmap                = ehca_mmap;
 
+       if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) {
+               shca->ib_device.uverbs_cmd_mask |=
+                       (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
+                       (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
+                       (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) |
+                       (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
+
+               shca->ib_device.create_srq          = ehca_create_srq;
+               shca->ib_device.modify_srq          = ehca_modify_srq;
+               shca->ib_device.query_srq           = ehca_query_srq;
+               shca->ib_device.destroy_srq         = ehca_destroy_srq;
+               shca->ib_device.post_srq_recv       = ehca_post_srq_recv;
+       }
+
        return ret;
 }
 
index 513471a7bffa9bd6b767d4d6b5eb06be2076d2a5..6f35f07dc02cd103383831ae494c0ba5a363b457 100644 (file)
@@ -3,7 +3,9 @@
  *
  *  QP functions
  *
- *  Authors: Waleri Fomin <fomin@de.ibm.com>
+ *  Authors: Joachim Fenkes <fenkes@de.ibm.com>
+ *           Stefan Roscher <stefan.roscher@de.ibm.com>
+ *           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>
@@ -260,6 +262,19 @@ static inline int ibqptype2servicetype(enum ib_qp_type ibqptype)
        }
 }
 
+/*
+ * init userspace queue info from ipz_queue data
+ */
+static inline void queue2resp(struct ipzu_queue_resp *resp,
+                             struct ipz_queue *queue)
+{
+       resp->qe_size = queue->qe_size;
+       resp->act_nr_of_sg = queue->act_nr_of_sg;
+       resp->queue_length = queue->queue_length;
+       resp->pagesize = queue->pagesize;
+       resp->toggle_state = queue->toggle_state;
+}
+
 /*
  * init_qp_queue initializes/constructs r/squeue and registers queue pages.
  */
@@ -338,11 +353,17 @@ init_qp_queue1:
        return ret;
 }
 
-struct ib_qp *ehca_create_qp(struct ib_pd *pd,
-                            struct ib_qp_init_attr *init_attr,
-                            struct ib_udata *udata)
+/*
+ * 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
+ * fields, the field out of init_attr is used.
+ */
+struct ehca_qp *internal_create_qp(struct ib_pd *pd,
+                                  struct ib_qp_init_attr *init_attr,
+                                  struct ib_srq_init_attr *srq_init_attr,
+                                  struct ib_udata *udata, int is_srq)
 {
-       static int da_rc_msg_size[]={ 128, 256, 512, 1024, 2048, 4096 };
+       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);
@@ -355,7 +376,7 @@ struct ib_qp *ehca_create_qp(struct ib_pd *pd,
 
        /* h_call's out parameters */
        struct ehca_alloc_qp_parms parms;
-       u32 swqe_size = 0, rwqe_size = 0;
+       u32 swqe_size = 0, rwqe_size = 0, ib_qp_num;
        unsigned long flags;
 
        memset(&parms, 0, sizeof(parms));
@@ -376,13 +397,34 @@ struct ib_qp *ehca_create_qp(struct ib_pd *pd,
        }
        qp_type &= 0x1F;
 
-       /* check for SRQ */
-       has_srq = !!(init_attr->srq);
+       /* handle SRQ base QPs */
+       if (init_attr->srq) {
+               struct ehca_qp *my_srq =
+                       container_of(init_attr->srq, struct ehca_qp, ib_srq);
+
+               has_srq = 1;
+               parms.ext_type = EQPT_SRQBASE;
+               parms.srq_qpn = my_srq->real_qp_num;
+               parms.srq_token = my_srq->token;
+       }
+
        if (is_llqp && has_srq) {
                ehca_err(pd->device, "LLQPs can't have an SRQ");
                return ERR_PTR(-EINVAL);
        }
 
+       /* handle SRQs */
+       if (is_srq) {
+               parms.ext_type = EQPT_SRQ;
+               parms.srq_limit = srq_init_attr->attr.srq_limit;
+               if (init_attr->cap.max_recv_sge > 3) {
+                       ehca_err(pd->device, "no more than three SGEs "
+                                "supported for SRQ  pd=%p  max_sge=%x",
+                                pd, init_attr->cap.max_recv_sge);
+                       return ERR_PTR(-EINVAL);
+               }
+       }
+
        /* check QP type */
        if (qp_type != IB_QPT_UD &&
            qp_type != IB_QPT_UC &&
@@ -423,11 +465,15 @@ struct ib_qp *ehca_create_qp(struct ib_pd *pd,
 
        spin_lock_init(&my_qp->spinlock_s);
        spin_lock_init(&my_qp->spinlock_r);
+       my_qp->qp_type = qp_type;
+       my_qp->ext_type = parms.ext_type;
 
-       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);
+       if (init_attr->recv_cq)
+               my_qp->recv_cq =
+                       container_of(init_attr->recv_cq, struct ehca_cq, ib_cq);
+       if (init_attr->send_cq)
+               my_qp->send_cq =
+                       container_of(init_attr->send_cq, struct ehca_cq, ib_cq);
 
        do {
                if (!idr_pre_get(&ehca_qp_idr, GFP_KERNEL)) {
@@ -471,8 +517,10 @@ struct ib_qp *ehca_create_qp(struct ib_pd *pd,
        parms.token = my_qp->token;
        parms.eq_handle = shca->eq.ipz_eq_handle;
        parms.pd = my_pd->fw_pd;
-       parms.send_cq_handle = my_qp->send_cq->ipz_cq_handle;
-       parms.recv_cq_handle = my_qp->recv_cq->ipz_cq_handle;
+       if (my_qp->send_cq)
+               parms.send_cq_handle = my_qp->send_cq->ipz_cq_handle;
+       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;
@@ -487,7 +535,7 @@ struct ib_qp *ehca_create_qp(struct ib_pd *pd,
                goto create_qp_exit1;
        }
 
-       my_qp->ib_qp.qp_num = my_qp->real_qp_num = parms.real_qp_num;
+       ib_qp_num = my_qp->real_qp_num = parms.real_qp_num;
        my_qp->ipz_qp_handle = parms.qp_handle;
        my_qp->galpas = parms.galpas;
 
@@ -535,7 +583,7 @@ struct ib_qp *ehca_create_qp(struct ib_pd *pd,
                        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->ib_qp.qp_num = (qp_type == IB_QPT_SMI) ? 0 : 1;
+                       ib_qp_num = (qp_type == IB_QPT_SMI) ? 0 : 1;
                }
 
                break;
@@ -545,36 +593,51 @@ struct ib_qp *ehca_create_qp(struct ib_pd *pd,
        }
 
        /* initialize r/squeue and register queue pages */
-       ret = init_qp_queue(shca, my_qp, &my_qp->ipz_squeue, 0,
-                           has_srq ? H_SUCCESS : H_PAGE_REGISTERED,
-                           parms.nr_sq_pages, swqe_size,
-                           parms.act_nr_send_sges);
-       if (ret) {
-               ehca_err(pd->device,
-                        "Couldn't initialize squeue and pages ret=%x", ret);
-               goto create_qp_exit2;
+       if (HAS_SQ(my_qp)) {
+               ret = init_qp_queue(
+                       shca, 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);
+               if (ret) {
+                       ehca_err(pd->device, "Couldn't initialize squeue "
+                                "and pages  ret=%x", ret);
+                       goto create_qp_exit2;
+               }
        }
 
-       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);
-       if (ret) {
-               ehca_err(pd->device,
-                        "Couldn't initialize rqueue and pages ret=%x", ret);
-               goto create_qp_exit3;
+       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);
+               if (ret) {
+                       ehca_err(pd->device, "Couldn't initialize rqueue "
+                                "and pages ret=%x", ret);
+                       goto create_qp_exit3;
+               }
        }
 
-       my_qp->ib_qp.pd = &my_pd->ib_pd;
-       my_qp->ib_qp.device = my_pd->ib_pd.device;
+       if (is_srq) {
+               my_qp->ib_srq.pd = &my_pd->ib_pd;
+               my_qp->ib_srq.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_srq.srq_context = init_attr->qp_context;
+               my_qp->ib_srq.event_handler = init_attr->event_handler;
+       } else {
+               my_qp->ib_qp.qp_num = ib_qp_num;
+               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_type = my_qp->qp_type = qp_type;
-       my_qp->ib_qp.srq = init_attr->srq;
+               my_qp->ib_qp.qp_type = 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;
+               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;
@@ -593,41 +656,32 @@ struct ib_qp *ehca_create_qp(struct ib_pd *pd,
                        goto create_qp_exit4;
                }
        }
-       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 (my_qp->send_cq) {
+               ret = ehca_cq_assign_qp(my_qp->send_cq, my_qp);
                if (ret) {
                        ehca_err(pd->device, "Couldn't assign qp to send_cq ret=%x",
                                 ret);
                        goto create_qp_exit4;
                }
-               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;
                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.ext_type = my_qp->ext_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;
-               /* 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;
+               if (HAS_SQ(my_qp))
+                       queue2resp(&resp.ipz_squeue, &my_qp->ipz_squeue);
+               if (HAS_RQ(my_qp))
+                       queue2resp(&resp.ipz_rqueue, &my_qp->ipz_rqueue);
+
                if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
                        ehca_err(pd->device, "Copy to udata failed");
                        ret = -EINVAL;
@@ -635,13 +689,15 @@ struct ib_qp *ehca_create_qp(struct ib_pd *pd,
                }
        }
 
-       return &my_qp->ib_qp;
+       return my_qp;
 
 create_qp_exit4:
-       ipz_queue_dtor(&my_qp->ipz_rqueue);
+       if (HAS_RQ(my_qp))
+               ipz_queue_dtor(&my_qp->ipz_rqueue);
 
 create_qp_exit3:
-       ipz_queue_dtor(&my_qp->ipz_squeue);
+       if (HAS_SQ(my_qp))
+               ipz_queue_dtor(&my_qp->ipz_squeue);
 
 create_qp_exit2:
        hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp);
@@ -656,6 +712,114 @@ create_qp_exit0:
        return ERR_PTR(ret);
 }
 
+struct ib_qp *ehca_create_qp(struct ib_pd *pd,
+                            struct ib_qp_init_attr *qp_init_attr,
+                            struct ib_udata *udata)
+{
+       struct ehca_qp *ret;
+
+       ret = internal_create_qp(pd, qp_init_attr, NULL, udata, 0);
+       return IS_ERR(ret) ? (struct ib_qp *) ret : &ret->ib_qp;
+}
+
+int internal_destroy_qp(struct ib_device *dev, struct ehca_qp *my_qp,
+                       struct ib_uobject *uobject);
+
+struct ib_srq *ehca_create_srq(struct ib_pd *pd,
+                              struct ib_srq_init_attr *srq_init_attr,
+                              struct ib_udata *udata)
+{
+       struct ib_qp_init_attr qp_init_attr;
+       struct ehca_qp *my_qp;
+       struct ib_srq *ret;
+       struct ehca_shca *shca = container_of(pd->device, struct ehca_shca,
+                                             ib_device);
+       struct hcp_modify_qp_control_block *mqpcb;
+       u64 hret, update_mask;
+
+       /* For common attributes, internal_create_qp() takes its info
+        * out of qp_init_attr, so copy all common attrs there.
+        */
+       memset(&qp_init_attr, 0, sizeof(qp_init_attr));
+       qp_init_attr.event_handler = srq_init_attr->event_handler;
+       qp_init_attr.qp_context = srq_init_attr->srq_context;
+       qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR;
+       qp_init_attr.qp_type = IB_QPT_RC;
+       qp_init_attr.cap.max_recv_wr = srq_init_attr->attr.max_wr;
+       qp_init_attr.cap.max_recv_sge = srq_init_attr->attr.max_sge;
+
+       my_qp = internal_create_qp(pd, &qp_init_attr, srq_init_attr, udata, 1);
+       if (IS_ERR(my_qp))
+               return (struct ib_srq *) my_qp;
+
+       /* copy back return values */
+       srq_init_attr->attr.max_wr = qp_init_attr.cap.max_recv_wr;
+       srq_init_attr->attr.max_sge = qp_init_attr.cap.max_recv_sge;
+
+       /* drive SRQ into RTR state */
+       mqpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
+       if (!mqpcb) {
+               ehca_err(pd->device, "Could not get zeroed page for mqpcb "
+                        "ehca_qp=%p qp_num=%x ", my_qp, my_qp->real_qp_num);
+               ret = ERR_PTR(-ENOMEM);
+               goto create_srq1;
+       }
+
+       mqpcb->qp_state = EHCA_QPS_INIT;
+       mqpcb->prim_phys_port = 1;
+       update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_STATE, 1);
+       hret = hipz_h_modify_qp(shca->ipz_hca_handle,
+                               my_qp->ipz_qp_handle,
+                               &my_qp->pf,
+                               update_mask,
+                               mqpcb, my_qp->galpas.kernel);
+       if (hret != H_SUCCESS) {
+               ehca_err(pd->device, "Could not modify SRQ to INIT"
+                        "ehca_qp=%p qp_num=%x hret=%lx",
+                        my_qp, my_qp->real_qp_num, hret);
+               goto create_srq2;
+       }
+
+       mqpcb->qp_enable = 1;
+       update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_ENABLE, 1);
+       hret = hipz_h_modify_qp(shca->ipz_hca_handle,
+                               my_qp->ipz_qp_handle,
+                               &my_qp->pf,
+                               update_mask,
+                               mqpcb, my_qp->galpas.kernel);
+       if (hret != H_SUCCESS) {
+               ehca_err(pd->device, "Could not enable SRQ"
+                        "ehca_qp=%p qp_num=%x hret=%lx",
+                        my_qp, my_qp->real_qp_num, hret);
+               goto create_srq2;
+       }
+
+       mqpcb->qp_state  = EHCA_QPS_RTR;
+       update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_STATE, 1);
+       hret = hipz_h_modify_qp(shca->ipz_hca_handle,
+                               my_qp->ipz_qp_handle,
+                               &my_qp->pf,
+                               update_mask,
+                               mqpcb, my_qp->galpas.kernel);
+       if (hret != H_SUCCESS) {
+               ehca_err(pd->device, "Could not modify SRQ to RTR"
+                        "ehca_qp=%p qp_num=%x hret=%lx",
+                        my_qp, my_qp->real_qp_num, hret);
+               goto create_srq2;
+       }
+
+       return &my_qp->ib_srq;
+
+create_srq2:
+       ret = ERR_PTR(ehca2ib_return_code(hret));
+       ehca_free_fw_ctrlblock(mqpcb);
+
+create_srq1:
+       internal_destroy_qp(pd->device, my_qp, my_qp->ib_srq.uobject);
+
+       return 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
@@ -1341,42 +1505,159 @@ query_qp_exit1:
        return ret;
 }
 
-int ehca_destroy_qp(struct ib_qp *ibqp)
+int ehca_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
+                   enum ib_srq_attr_mask attr_mask, struct ib_udata *udata)
 {
-       struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
-       struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca,
+       struct ehca_qp *my_qp =
+               container_of(ibsrq, struct ehca_qp, ib_srq);
+       struct ehca_pd *my_pd =
+               container_of(ibsrq->pd, struct ehca_pd, ib_pd);
+       struct ehca_shca *shca =
+               container_of(ibsrq->pd->device, struct ehca_shca, ib_device);
+       struct hcp_modify_qp_control_block *mqpcb;
+       u64 update_mask;
+       u64 h_ret;
+       int ret = 0;
+
+       u32 cur_pid = current->tgid;
+       if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+           my_pd->ownpid != cur_pid) {
+               ehca_err(ibsrq->pd->device, "Invalid caller pid=%x ownpid=%x",
+                        cur_pid, my_pd->ownpid);
+               return -EINVAL;
+       }
+
+       mqpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
+       if (!mqpcb) {
+               ehca_err(ibsrq->device, "Could not get zeroed page for mqpcb "
+                        "ehca_qp=%p qp_num=%x ", my_qp, my_qp->real_qp_num);
+               return -ENOMEM;
+       }
+
+       update_mask = 0;
+       if (attr_mask & IB_SRQ_LIMIT) {
+               attr_mask &= ~IB_SRQ_LIMIT;
+               update_mask |=
+                       EHCA_BMASK_SET(MQPCB_MASK_CURR_SRQ_LIMIT, 1)
+                       | EHCA_BMASK_SET(MQPCB_MASK_QP_AFF_ASYN_EV_LOG_REG, 1);
+               mqpcb->curr_srq_limit =
+                       EHCA_BMASK_SET(MQPCB_CURR_SRQ_LIMIT, attr->srq_limit);
+               mqpcb->qp_aff_asyn_ev_log_reg =
+                       EHCA_BMASK_SET(QPX_AAELOG_RESET_SRQ_LIMIT, 1);
+       }
+
+       /* by now, all bits in attr_mask should have been cleared */
+       if (attr_mask) {
+               ehca_err(ibsrq->device, "invalid attribute mask bits set  "
+                        "attr_mask=%x", attr_mask);
+               ret = -EINVAL;
+               goto modify_srq_exit0;
+       }
+
+       if (ehca_debug_level)
+               ehca_dmp(mqpcb, 4*70, "qp_num=%x", my_qp->real_qp_num);
+
+       h_ret = hipz_h_modify_qp(shca->ipz_hca_handle, my_qp->ipz_qp_handle,
+                                NULL, update_mask, mqpcb,
+                                my_qp->galpas.kernel);
+
+       if (h_ret != H_SUCCESS) {
+               ret = ehca2ib_return_code(h_ret);
+               ehca_err(ibsrq->device, "hipz_h_modify_qp() failed rc=%lx "
+                        "ehca_qp=%p qp_num=%x",
+                        h_ret, my_qp, my_qp->real_qp_num);
+       }
+
+modify_srq_exit0:
+       ehca_free_fw_ctrlblock(mqpcb);
+
+       return ret;
+}
+
+int ehca_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr)
+{
+       struct ehca_qp *my_qp = container_of(srq, struct ehca_qp, ib_srq);
+       struct ehca_pd *my_pd = container_of(srq->pd, struct ehca_pd, ib_pd);
+       struct ehca_shca *shca = container_of(srq->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 ret = 0;
+       u64 h_ret;
+
+       if (my_pd->ib_pd.uobject  && my_pd->ib_pd.uobject->context  &&
+           my_pd->ownpid != cur_pid) {
+               ehca_err(srq->device, "Invalid caller pid=%x ownpid=%x",
+                        cur_pid, my_pd->ownpid);
+               return -EINVAL;
+       }
+
+       qpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
+       if (!qpcb) {
+               ehca_err(srq->device, "Out of memory for qpcb "
+                        "ehca_qp=%p qp_num=%x", my_qp, my_qp->real_qp_num);
+               return -ENOMEM;
+       }
+
+       h_ret = hipz_h_query_qp(adapter_handle, my_qp->ipz_qp_handle,
+                               NULL, qpcb, my_qp->galpas.kernel);
+
+       if (h_ret != H_SUCCESS) {
+               ret = ehca2ib_return_code(h_ret);
+               ehca_err(srq->device, "hipz_h_query_qp() failed "
+                        "ehca_qp=%p qp_num=%x h_ret=%lx",
+                        my_qp, my_qp->real_qp_num, h_ret);
+               goto query_srq_exit1;
+       }
+
+       srq_attr->max_wr = qpcb->max_nr_outst_recv_wr - 1;
+       srq_attr->srq_limit = EHCA_BMASK_GET(
+               MQPCB_CURR_SRQ_LIMIT, qpcb->curr_srq_limit);
+
+       if (ehca_debug_level)
+               ehca_dmp(qpcb, 4*70, "qp_num=%x", my_qp->real_qp_num);
+
+query_srq_exit1:
+       ehca_free_fw_ctrlblock(qpcb);
+
+       return ret;
+}
+
+int internal_destroy_qp(struct ib_device *dev, struct ehca_qp *my_qp,
+                       struct ib_uobject *uobject)
+{
+       struct ehca_shca *shca = container_of(dev, 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;
+       u32 qp_num = my_qp->real_qp_num;
        int ret;
        u64 h_ret;
        u8 port_num;
        enum ib_qp_type qp_type;
        unsigned long flags;
 
-       if (ibqp->uobject) {
+       if (uobject) {
                if (my_qp->mm_count_galpa ||
                    my_qp->mm_count_rqueue || my_qp->mm_count_squeue) {
-                       ehca_err(ibqp->device, "Resources still referenced in "
-                                "user space qp_num=%x", ibqp->qp_num);
+                       ehca_err(dev, "Resources still referenced in "
+                                "user space qp_num=%x", qp_num);
                        return -EINVAL;
                }
                if (my_pd->ownpid != cur_pid) {
-                       ehca_err(ibqp->device, "Invalid caller pid=%x ownpid=%x",
+                       ehca_err(dev, "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);
+               ret = ehca_cq_unassign_qp(my_qp->send_cq, qp_num);
                if (ret) {
-                       ehca_err(ibqp->device, "Couldn't unassign qp from "
+                       ehca_err(dev, "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);
+                                qp_num, my_qp->send_cq->cq_number);
                        return ret;
                }
        }
@@ -1387,7 +1668,7 @@ int ehca_destroy_qp(struct ib_qp *ibqp)
 
        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_err(dev, "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);
        }
@@ -1398,7 +1679,7 @@ int ehca_destroy_qp(struct ib_qp *ibqp)
        /* 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.",
+               ehca_info(dev, "device %s: port %x is inactive.",
                          shca->ib_device.name, port_num);
                event.device = &shca->ib_device;
                event.event = IB_EVENT_PORT_ERR;
@@ -1407,12 +1688,28 @@ int ehca_destroy_qp(struct ib_qp *ibqp)
                ib_dispatch_event(&event);
        }
 
-       ipz_queue_dtor(&my_qp->ipz_rqueue);
-       ipz_queue_dtor(&my_qp->ipz_squeue);
+       if (HAS_RQ(my_qp))
+               ipz_queue_dtor(&my_qp->ipz_rqueue);
+       if (HAS_SQ(my_qp))
+               ipz_queue_dtor(&my_qp->ipz_squeue);
        kmem_cache_free(qp_cache, my_qp);
        return 0;
 }
 
+int ehca_destroy_qp(struct ib_qp *qp)
+{
+       return internal_destroy_qp(qp->device,
+                                  container_of(qp, struct ehca_qp, ib_qp),
+                                  qp->uobject);
+}
+
+int ehca_destroy_srq(struct ib_srq *srq)
+{
+       return internal_destroy_qp(srq->device,
+                                  container_of(srq, struct ehca_qp, ib_srq),
+                                  srq->uobject);
+}
+
 int ehca_init_qp_cache(void)
 {
        qp_cache = kmem_cache_create("ehca_cache_qp",
index 56c4527c884f75b1c05727c7b40c07d2d61321cf..b5664fa34de3d19dc15cb81be51a0137317599a9 100644 (file)
@@ -3,8 +3,9 @@
  *
  *  post_send/recv, poll_cq, req_notify
  *
- *  Authors: Waleri Fomin <fomin@de.ibm.com>
- *           Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ *  Authors: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ *           Waleri Fomin <fomin@de.ibm.com>
+ *           Joachim Fenkes <fenkes@de.ibm.com>
  *           Reinhard Ernst <rernst@de.ibm.com>
  *
  *  Copyright (c) 2005 IBM Corporation
@@ -413,17 +414,23 @@ post_send_exit0:
        return ret;
 }
 
-int ehca_post_recv(struct ib_qp *qp,
-                  struct ib_recv_wr *recv_wr,
-                  struct ib_recv_wr **bad_recv_wr)
+static int internal_post_recv(struct ehca_qp *my_qp,
+                             struct ib_device *dev,
+                             struct ib_recv_wr *recv_wr,
+                             struct ib_recv_wr **bad_recv_wr)
 {
-       struct ehca_qp *my_qp = container_of(qp, struct ehca_qp, ib_qp);
        struct ib_recv_wr *cur_recv_wr;
        struct ehca_wqe *wqe_p;
        int wqe_cnt = 0;
        int ret = 0;
        unsigned long spl_flags;
 
+       if (unlikely(!HAS_RQ(my_qp))) {
+               ehca_err(dev, "QP has no RQ  ehca_qp=%p qp_num=%x ext_type=%d",
+                        my_qp, my_qp->real_qp_num, my_qp->ext_type);
+               return -ENODEV;
+       }
+
        /* LOCK the QUEUE */
        spin_lock_irqsave(&my_qp->spinlock_r, spl_flags);
 
@@ -439,8 +446,8 @@ int ehca_post_recv(struct ib_qp *qp,
                                *bad_recv_wr = cur_recv_wr;
                        if (wqe_cnt == 0) {
                                ret = -ENOMEM;
-                               ehca_err(qp->device, "Too many posted WQEs "
-                                        "qp_num=%x", qp->qp_num);
+                               ehca_err(dev, "Too many posted WQEs "
+                                        "qp_num=%x", my_qp->real_qp_num);
                        }
                        goto post_recv_exit0;
                }
@@ -455,14 +462,14 @@ int ehca_post_recv(struct ib_qp *qp,
                        *bad_recv_wr = cur_recv_wr;
                        if (wqe_cnt == 0) {
                                ret = -EINVAL;
-                               ehca_err(qp->device, "Could not write WQE "
-                                        "qp_num=%x", qp->qp_num);
+                               ehca_err(dev, "Could not write WQE "
+                                        "qp_num=%x", my_qp->real_qp_num);
                        }
                        goto post_recv_exit0;
                }
                wqe_cnt++;
-               ehca_gen_dbg("ehca_qp=%p qp_num=%x wqe_cnt=%d",
-                    my_qp, qp->qp_num, wqe_cnt);
+               ehca_dbg(dev, "ehca_qp=%p qp_num=%x wqe_cnt=%d",
+                        my_qp, my_qp->real_qp_num, wqe_cnt);
        } /* eof for cur_recv_wr */
 
 post_recv_exit0:
@@ -472,6 +479,22 @@ post_recv_exit0:
        return ret;
 }
 
+int ehca_post_recv(struct ib_qp *qp,
+                  struct ib_recv_wr *recv_wr,
+                  struct ib_recv_wr **bad_recv_wr)
+{
+       return internal_post_recv(container_of(qp, struct ehca_qp, ib_qp),
+                                 qp->device, recv_wr, bad_recv_wr);
+}
+
+int ehca_post_srq_recv(struct ib_srq *srq,
+                      struct ib_recv_wr *recv_wr,
+                      struct ib_recv_wr **bad_recv_wr)
+{
+       return internal_post_recv(container_of(srq, struct ehca_qp, ib_srq),
+                                 srq->device, recv_wr, bad_recv_wr);
+}
+
 /*
  * ib_wc_opcode table converts ehca wc opcode to ib
  * Since we use zero to indicate invalid opcode, the actual ib opcode must
index 73db920b6945e7b255f3ac2ac996ab87b42aa2de..d8fe37d56f1a5e86d9252507d73b533ef35608a7 100644 (file)
@@ -257,6 +257,7 @@ int ehca_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
        struct ehca_cq *cq;
        struct ehca_qp *qp;
        struct ehca_pd *pd;
+       struct ib_uobject *uobject;
 
        switch (q_type) {
        case  1: /* CQ */
@@ -304,7 +305,8 @@ int ehca_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
                        return -ENOMEM;
                }
 
-               if (!qp->ib_qp.uobject || qp->ib_qp.uobject->context != context)
+               uobject = IS_SRQ(qp) ? qp->ib_srq.uobject : qp->ib_qp.uobject;
+               if (!uobject || uobject->context != context)
                        return -EINVAL;
 
                ret = ehca_mmap_qp(vma, qp, rsrc_type);
index 7efc4a2ad2b9a7775a9357d976603dbac209b182..b0783773f1c8e10c879144d9e63660147009f9d7 100644 (file)
@@ -5,6 +5,7 @@
  *
  *  Authors: Christoph Raisch <raisch@de.ibm.com>
  *           Hoang-Nam Nguyen <hnguyen@de.ibm.com>
+ *           Joachim Fenkes <fenkes@de.ibm.com>
  *           Gerd Bayer <gerd.bayer@de.ibm.com>
  *           Waleri Fomin <fomin@de.ibm.com>
  *
 #define H_ALL_RES_QP_MAX_SEND_SGE       EHCA_BMASK_IBM(32, 39)
 #define H_ALL_RES_QP_MAX_RECV_SGE       EHCA_BMASK_IBM(40, 47)
 
+#define H_ALL_RES_QP_UD_AV_LKEY         EHCA_BMASK_IBM(32, 63)
+#define H_ALL_RES_QP_SRQ_QP_TOKEN       EHCA_BMASK_IBM(0, 31)
+#define H_ALL_RES_QP_SRQ_QP_HANDLE      EHCA_BMASK_IBM(0, 64)
+#define H_ALL_RES_QP_SRQ_LIMIT          EHCA_BMASK_IBM(48, 63)
+#define H_ALL_RES_QP_SRQ_QPN            EHCA_BMASK_IBM(40, 63)
+
 #define H_ALL_RES_QP_ACT_OUTST_SEND_WR  EHCA_BMASK_IBM(16, 31)
 #define H_ALL_RES_QP_ACT_OUTST_RECV_WR  EHCA_BMASK_IBM(48, 63)
 #define H_ALL_RES_QP_ACT_SEND_SGE       EHCA_BMASK_IBM(8, 15)
@@ -150,7 +157,7 @@ static long ehca_plpar_hcall9(unsigned long opcode,
 {
        long ret;
        int i, sleep_msecs, lock_is_set = 0;
-       unsigned long flags;
+       unsigned long flags = 0;
 
        ehca_gen_dbg("opcode=%lx arg1=%lx arg2=%lx arg3=%lx arg4=%lx "
                     "arg5=%lx arg6=%lx arg7=%lx arg8=%lx arg9=%lx",
@@ -282,8 +289,7 @@ u64 hipz_h_alloc_resource_qp(const struct ipz_adapter_handle adapter_handle,
                             struct ehca_alloc_qp_parms *parms)
 {
        u64 ret;
-       u64 allocate_controls;
-       u64 max_r10_reg;
+       u64 allocate_controls, max_r10_reg, r11, r12;
        u64 outs[PLPAR_HCALL9_BUFSIZE];
 
        allocate_controls =
@@ -309,6 +315,13 @@ u64 hipz_h_alloc_resource_qp(const struct ipz_adapter_handle adapter_handle,
                | EHCA_BMASK_SET(H_ALL_RES_QP_MAX_RECV_SGE,
                                 parms->max_recv_sge);
 
+       r11 = EHCA_BMASK_SET(H_ALL_RES_QP_SRQ_QP_TOKEN, parms->srq_token);
+
+       if (parms->ext_type == EQPT_SRQ)
+               r12 = EHCA_BMASK_SET(H_ALL_RES_QP_SRQ_LIMIT, parms->srq_limit);
+       else
+               r12 = EHCA_BMASK_SET(H_ALL_RES_QP_SRQ_QPN, parms->srq_qpn);
+
        ret = ehca_plpar_hcall9(H_ALLOC_RESOURCE, outs,
                                adapter_handle.handle,             /* r4  */
                                allocate_controls,                 /* r5  */
@@ -316,9 +329,7 @@ u64 hipz_h_alloc_resource_qp(const struct ipz_adapter_handle adapter_handle,
                                parms->recv_cq_handle.handle,
                                parms->eq_handle.handle,
                                ((u64)parms->token << 32) | parms->pd.value,
-                               max_r10_reg,                       /* r10 */
-                               parms->ud_av_l_key_ctl,            /* r11 */
-                               0);
+                               max_r10_reg, r11, r12);
 
        parms->qp_handle.handle = outs[0];
        parms->real_qp_num = (u32)outs[1];
index 9116fc943feee3e2b78cf37a9cbeeac829ddd283..dad6dea5636b55e1883eca6ac59e6f9248aafbd7 100644 (file)
@@ -163,6 +163,7 @@ struct hipz_qptemm {
 
 #define QPX_SQADDER EHCA_BMASK_IBM(48,63)
 #define QPX_RQADDER EHCA_BMASK_IBM(48,63)
+#define QPX_AAELOG_RESET_SRQ_LIMIT EHCA_BMASK_IBM(3,3)
 
 #define QPTEMM_OFFSET(x) offsetof(struct hipz_qptemm,x)