/*
* 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);
}
