From d25a0fc41c1f927bb914e72a03c1898052557406 Mon Sep 17 00:00:00 2001 From: Dave Ertman Date: Thu, 20 May 2021 09:37:49 -0500 Subject: ice: Initialize RDMA support Probe the device's capabilities to see if it supports RDMA. If so, allocate and reserve resources to support its operation; populate structures with initial values. Signed-off-by: Dave Ertman Signed-off-by: Shiraz Saleem Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/ice/ice_idc.c | 43 ++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 drivers/net/ethernet/intel/ice/ice_idc.c (limited to 'drivers/net/ethernet/intel/ice/ice_idc.c') diff --git a/drivers/net/ethernet/intel/ice/ice_idc.c b/drivers/net/ethernet/intel/ice/ice_idc.c new file mode 100644 index 000000000000..c419c9cb316d --- /dev/null +++ b/drivers/net/ethernet/intel/ice/ice_idc.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (C) 2021, Intel Corporation. */ + +/* Inter-Driver Communication */ +#include "ice.h" +#include "ice_lib.h" +#include "ice_dcb_lib.h" + +/** + * ice_reserve_rdma_qvector - Reserve vector resources for RDMA driver + * @pf: board private structure to initialize + */ +static int ice_reserve_rdma_qvector(struct ice_pf *pf) +{ + if (test_bit(ICE_FLAG_RDMA_ENA, pf->flags)) { + int index; + + index = ice_get_res(pf, pf->irq_tracker, pf->num_rdma_msix, + ICE_RES_RDMA_VEC_ID); + if (index < 0) + return index; + pf->num_avail_sw_msix -= pf->num_rdma_msix; + pf->rdma_base_vector = (u16)index; + } + return 0; +} + +/** + * ice_init_rdma - initializes PF for RDMA use + * @pf: ptr to ice_pf + */ +int ice_init_rdma(struct ice_pf *pf) +{ + struct device *dev = &pf->pdev->dev; + int ret; + + /* Reserve vector resources */ + ret = ice_reserve_rdma_qvector(pf); + if (ret < 0) + dev_err(dev, "failed to reserve vectors for RDMA\n"); + + return ret; +} -- cgit v1.2.3