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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2011-2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2011 UT-Battelle, LLC. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#if !defined(MCA_BTL_UGNI_PREPARE_H)
# define MCA_BTL_UGNI_PREPARE_H
# include "opal_config.h"
# include "btl_ugni.h"
# include "btl_ugni_frag.h"
static inline struct mca_btl_base_descriptor_t *
mca_btl_ugni_prepare_src_send_nodata(struct mca_btl_base_module_t *btl,
mca_btl_base_endpoint_t *endpoint, uint8_t order,
size_t reserve, uint32_t flags)
{
mca_btl_ugni_base_frag_t *frag = NULL;
frag = mca_btl_ugni_frag_alloc_rdma(endpoint);
if (OPAL_UNLIKELY(NULL == frag)) {
return NULL;
}
BTL_VERBOSE(("preparing src for send fragment. size = %u", (unsigned int) reserve));
frag->hdr_size = reserve + sizeof(frag->hdr.send);
frag->segments[0].seg_addr.pval = frag->hdr.send_ex.pml_header;
frag->segments[0].seg_len = reserve;
frag->segments[1].seg_addr.pval = NULL;
frag->segments[1].seg_len = 0;
frag->base.des_segments = frag->segments;
frag->base.des_segment_count = 1;
frag->base.order = order;
frag->base.des_flags = flags;
return &frag->base;
}
static inline struct mca_btl_base_descriptor_t *mca_btl_ugni_prepare_src_send_inplace(
struct mca_btl_base_module_t *btl, mca_btl_base_endpoint_t *endpoint,
struct opal_convertor_t *convertor, uint8_t order, size_t reserve, size_t *size, uint32_t flags)
{
bool use_eager_get = (*size + reserve) > mca_btl_ugni_component.smsg_max_data;
mca_btl_ugni_module_t *ugni_module = (mca_btl_ugni_module_t *) btl;
mca_btl_ugni_base_frag_t *frag = NULL;
mca_btl_ugni_reg_t *registration = NULL;
void *data_ptr;
int rc;
opal_convertor_get_current_pointer(convertor, &data_ptr);
frag = mca_btl_ugni_frag_alloc_rdma(endpoint);
if (OPAL_UNLIKELY(NULL == frag)) {
return NULL;
}
BTL_VERBOSE(("preparing src for send fragment. size = %u", (unsigned int) (*size + reserve)));
if (OPAL_UNLIKELY(true == use_eager_get)) {
rc = ugni_module->rcache
->rcache_register(ugni_module->rcache, data_ptr, *size, 0,
MCA_RCACHE_ACCESS_REMOTE_READ,
(mca_rcache_base_registration_t **) ®istration);
if (OPAL_UNLIKELY(OPAL_SUCCESS != rc)) {
mca_btl_ugni_frag_return(frag);
return NULL;
}
frag->flags = MCA_BTL_UGNI_FRAG_EAGER | MCA_BTL_UGNI_FRAG_IGNORE;
frag->registration = registration;
frag->hdr.eager.memory_handle = registration->handle;
;
frag->hdr_size = reserve + sizeof(frag->hdr.eager);
frag->segments[0].seg_addr.pval = frag->hdr.eager_ex.pml_header;
} else {
frag->hdr_size = reserve + sizeof(frag->hdr.send);
frag->segments[0].seg_addr.pval = frag->hdr.send_ex.pml_header;
}
frag->segments[0].seg_len = reserve;
frag->segments[1].seg_addr.pval = data_ptr;
frag->segments[1].seg_len = *size;
frag->base.des_segments = frag->segments;
frag->base.des_segment_count = 2;
frag->base.order = order;
frag->base.des_flags = flags;
return &frag->base;
}
static inline struct mca_btl_base_descriptor_t *mca_btl_ugni_prepare_src_send_buffered(
struct mca_btl_base_module_t *btl, mca_btl_base_endpoint_t *endpoint,
struct opal_convertor_t *convertor, uint8_t order, size_t reserve, size_t *size, uint32_t flags)
{
bool use_eager_get = (*size + reserve) > mca_btl_ugni_component.smsg_max_data;
mca_btl_ugni_reg_t *registration = NULL;
mca_btl_ugni_base_frag_t *frag = NULL;
uint32_t iov_count = 1;
struct iovec iov;
int rc;
if (OPAL_UNLIKELY(true == use_eager_get)) {
frag = mca_btl_ugni_frag_alloc_eager_send(endpoint);
if (OPAL_UNLIKELY(NULL == frag)) {
return NULL;
}
frag->flags = MCA_BTL_UGNI_FRAG_EAGER | MCA_BTL_UGNI_FRAG_IGNORE;
registration = (mca_btl_ugni_reg_t *) frag->base.super.registration;
frag->hdr.eager.memory_handle = registration->handle;
frag->hdr_size = reserve + sizeof(frag->hdr.eager);
frag->segments[0].seg_addr.pval = frag->hdr.eager_ex.pml_header;
} else {
frag = mca_btl_ugni_frag_alloc_smsg(endpoint);
if (OPAL_UNLIKELY(NULL == frag)) {
return NULL;
}
frag->hdr_size = reserve + sizeof(frag->hdr.send);
frag->segments[0].seg_addr.pval = frag->hdr.send_ex.pml_header;
}
frag->flags |= MCA_BTL_UGNI_FRAG_BUFFERED;
iov.iov_len = *size;
iov.iov_base = (IOVBASE_TYPE *) frag->base.super.ptr;
rc = opal_convertor_pack(convertor, &iov, &iov_count, size);
if (OPAL_UNLIKELY(rc < 0)) {
mca_btl_ugni_frag_return(frag);
return NULL;
}
frag->segments[0].seg_len = reserve;
frag->segments[1].seg_addr.pval = frag->base.super.ptr;
frag->segments[1].seg_len = *size;
frag->base.des_segments = frag->segments;
frag->base.des_segment_count = 2;
frag->base.order = order;
frag->base.des_flags = flags;
return &frag->base;
}
static inline struct mca_btl_base_descriptor_t *
mca_btl_ugni_prepare_src_send(struct mca_btl_base_module_t *btl, mca_btl_base_endpoint_t *endpoint,
struct opal_convertor_t *convertor, uint8_t order, size_t reserve,
size_t *size, uint32_t flags)
{
bool use_eager_get = (*size + reserve) > mca_btl_ugni_component.smsg_max_data;
bool send_in_place;
void *data_ptr;
if (!(*size)) {
return mca_btl_ugni_prepare_src_send_nodata(btl, endpoint, order, reserve, flags);
}
opal_convertor_get_current_pointer(convertor, &data_ptr);
send_in_place = (btl->btl_flags & MCA_BTL_FLAGS_SEND_INPLACE)
&& !(opal_convertor_need_buffers(convertor)
|| opal_convertor_on_device(convertor)
|| (use_eager_get && ((uintptr_t) data_ptr & 3)));
if (send_in_place) {
return mca_btl_ugni_prepare_src_send_inplace(btl, endpoint, convertor, order, reserve, size,
flags);
} else {
return mca_btl_ugni_prepare_src_send_buffered(btl, endpoint, convertor, order, reserve,
size, flags);
}
}
#endif
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