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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2014-2018 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2018 Intel, Inc, All rights reserved
*
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "btl_ofi_rdma.h"
#include <rdma/fi_atomic.h>
static inline int to_fi_op(mca_btl_base_atomic_op_t op)
{
switch (op) {
case MCA_BTL_ATOMIC_ADD:
return FI_SUM;
case MCA_BTL_ATOMIC_SWAP:
return FI_ATOMIC_WRITE;
case MCA_BTL_ATOMIC_MAX:
return FI_MAX;
case MCA_BTL_ATOMIC_MIN:
return FI_MIN;
case MCA_BTL_ATOMIC_LAND:
return FI_LAND;
case MCA_BTL_ATOMIC_AND:
return FI_BAND;
case MCA_BTL_ATOMIC_LOR:
return FI_LOR;
case MCA_BTL_ATOMIC_OR:
return FI_BOR;
case MCA_BTL_ATOMIC_LXOR:
return FI_LXOR;
case MCA_BTL_ATOMIC_XOR:
return FI_BXOR;
default:
BTL_ERROR(("Unknown or unsupported atomic op."));
MCA_BTL_OFI_ABORT();
/* just to squash the warning */
return OPAL_ERROR;
}
}
int mca_btl_ofi_afop(struct mca_btl_base_module_t *btl, struct mca_btl_base_endpoint_t *endpoint,
void *local_address, uint64_t remote_address,
mca_btl_base_registration_handle_t *local_handle,
mca_btl_base_registration_handle_t *remote_handle, mca_btl_base_atomic_op_t op,
uint64_t operand, int flags, int order,
mca_btl_base_rdma_completion_fn_t cbfunc, void *cbcontext, void *cbdata)
{
int rc;
int fi_datatype = FI_UINT64;
int fi_op;
mca_btl_ofi_module_t *ofi_btl = (mca_btl_ofi_module_t *) btl;
mca_btl_ofi_endpoint_t *btl_endpoint = (mca_btl_ofi_endpoint_t *) endpoint;
mca_btl_ofi_rdma_completion_t *comp = NULL;
mca_btl_ofi_context_t *ofi_context;
MCA_BTL_OFI_NUM_RDMA_INC(ofi_btl);
ofi_context = get_ofi_context(ofi_btl);
if (flags & MCA_BTL_ATOMIC_FLAG_32BIT) {
fi_datatype = FI_UINT32;
}
fi_op = to_fi_op(op);
comp = mca_btl_ofi_rdma_completion_alloc(btl, endpoint, ofi_context, local_address,
local_handle, cbfunc, cbcontext, cbdata,
MCA_BTL_OFI_TYPE_AFOP);
/* copy the operand because it might get freed from upper layer */
comp->operand = (uint64_t) operand;
remote_address = (remote_address - (uint64_t) remote_handle->base_addr);
rc = fi_fetch_atomic(ofi_context->tx_ctx, (void *) &comp->operand, 1, NULL, /* operand */
local_address, local_handle->desc, /* results */
btl_endpoint->peer_addr, /* remote addr */
remote_address, remote_handle->rkey, /* remote buffer */
fi_datatype, fi_op, &comp->comp_ctx);
if (rc == -FI_EAGAIN) {
MCA_BTL_OFI_NUM_RDMA_DEC(ofi_btl);
opal_free_list_return(comp->base.my_list, (opal_free_list_item_t *) comp);
return OPAL_ERR_OUT_OF_RESOURCE;
} else if (rc < 0) {
MCA_BTL_OFI_NUM_RDMA_DEC(ofi_btl);
opal_free_list_return(comp->base.my_list, (opal_free_list_item_t *) comp);
BTL_ERROR(("fi_fetch_atomic failed with rc=%d (%s)", rc, fi_strerror(-rc)));
MCA_BTL_OFI_ABORT();
}
return OPAL_SUCCESS;
}
int mca_btl_ofi_aop(struct mca_btl_base_module_t *btl, mca_btl_base_endpoint_t *endpoint,
uint64_t remote_address, mca_btl_base_registration_handle_t *remote_handle,
mca_btl_base_atomic_op_t op, uint64_t operand, int flags, int order,
mca_btl_base_rdma_completion_fn_t cbfunc, void *cbcontext, void *cbdata)
{
int rc;
int fi_datatype = FI_UINT64;
int fi_op;
mca_btl_ofi_module_t *ofi_btl = (mca_btl_ofi_module_t *) btl;
mca_btl_ofi_endpoint_t *btl_endpoint = (mca_btl_ofi_endpoint_t *) endpoint;
mca_btl_ofi_rdma_completion_t *comp = NULL;
mca_btl_ofi_context_t *ofi_context;
MCA_BTL_OFI_NUM_RDMA_INC(ofi_btl);
ofi_context = get_ofi_context(ofi_btl);
if (flags & MCA_BTL_ATOMIC_FLAG_32BIT) {
fi_datatype = FI_UINT32;
}
fi_op = to_fi_op(op);
comp = mca_btl_ofi_rdma_completion_alloc(btl, endpoint, ofi_context, NULL, NULL, cbfunc,
cbcontext, cbdata, MCA_BTL_OFI_TYPE_AOP);
/* copy the operand because it might get freed from upper layer */
comp->operand = (uint64_t) operand;
remote_address = (remote_address - (uint64_t) remote_handle->base_addr);
rc = fi_atomic(ofi_context->tx_ctx, (void *) &comp->operand, 1, NULL, /* operand */
btl_endpoint->peer_addr, /* remote addr */
remote_address, remote_handle->rkey, /* remote buffer */
fi_datatype, fi_op, &comp->comp_ctx);
if (rc == -FI_EAGAIN) {
MCA_BTL_OFI_NUM_RDMA_DEC(ofi_btl);
opal_free_list_return(comp->base.my_list, (opal_free_list_item_t *) comp);
return OPAL_ERR_OUT_OF_RESOURCE;
} else if (rc < 0) {
MCA_BTL_OFI_NUM_RDMA_DEC(ofi_btl);
opal_free_list_return(comp->base.my_list, (opal_free_list_item_t *) comp);
BTL_ERROR(("fi_atomic failed with rc=%d (%s)", rc, fi_strerror(-rc)));
MCA_BTL_OFI_ABORT();
}
return OPAL_SUCCESS;
}
int mca_btl_ofi_acswap(struct mca_btl_base_module_t *btl, struct mca_btl_base_endpoint_t *endpoint,
void *local_address, uint64_t remote_address,
mca_btl_base_registration_handle_t *local_handle,
mca_btl_base_registration_handle_t *remote_handle, uint64_t compare,
uint64_t value, int flags, int order,
mca_btl_base_rdma_completion_fn_t cbfunc, void *cbcontext, void *cbdata)
{
int rc;
int fi_datatype = FI_UINT64;
mca_btl_ofi_rdma_completion_t *comp = NULL;
mca_btl_ofi_module_t *ofi_btl = (mca_btl_ofi_module_t *) btl;
mca_btl_ofi_endpoint_t *btl_endpoint = (mca_btl_ofi_endpoint_t *) endpoint;
mca_btl_ofi_context_t *ofi_context;
MCA_BTL_OFI_NUM_RDMA_INC(ofi_btl);
ofi_context = get_ofi_context(ofi_btl);
if (flags & MCA_BTL_ATOMIC_FLAG_32BIT) {
fi_datatype = FI_UINT32;
}
comp = mca_btl_ofi_rdma_completion_alloc(btl, endpoint, ofi_context, local_address,
local_handle, cbfunc, cbcontext, cbdata,
MCA_BTL_OFI_TYPE_CSWAP);
/* copy the operand because it might get freed from upper layer */
comp->operand = (uint64_t) value;
comp->compare = (uint64_t) compare;
remote_address = (remote_address - (uint64_t) remote_handle->base_addr);
/* perform atomic */
rc = fi_compare_atomic(ofi_context->tx_ctx, (void *) &comp->operand, 1, NULL,
(void *) &comp->compare, NULL, local_address, local_handle->desc,
btl_endpoint->peer_addr, remote_address, remote_handle->rkey,
fi_datatype, FI_CSWAP, &comp->comp_ctx);
if (rc == -FI_EAGAIN) {
MCA_BTL_OFI_NUM_RDMA_DEC(ofi_btl);
opal_free_list_return(comp->base.my_list, (opal_free_list_item_t *) comp);
return OPAL_ERR_OUT_OF_RESOURCE;
} else if (rc < 0) {
MCA_BTL_OFI_NUM_RDMA_DEC(ofi_btl);
opal_free_list_return(comp->base.my_list, (opal_free_list_item_t *) comp);
BTL_ERROR(("fi_compare_atomic failed with rc=%d (%s)", rc, fi_strerror(-rc)));
MCA_BTL_OFI_ABORT();
}
return OPAL_SUCCESS;
}
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