Revision 73e284d2572581d848267c74552215f95f0f0996 authored by Vineet Gupta on 21 October 2016, 00:49:15 UTC, committed by Vineet Gupta on 28 October 2016, 17:07:43 UTC
On older arc700 cores, some of the features configured were not present in Build config registers. To print about them at boot, we just use the Kconfig option i.e. whether linux is built to use them or not. So yes this seems bogus, but what else can be done. Moreover if linux is booting with these enabled, then the Kconfig info is a good indicator anyways. Over time these "hacks" accumulated in read_arc_build_cfg_regs() as well as arc_cpu_mumbojumbo(). so refactor and move all of those in a single place: read_arc_build_cfg_regs(). This causes some code redcution too: | bloat-o-meter2 arch/arc/kernel/setup.o.0 arch/arc/kernel/setup.o.1 | add/remove: 0/0 grow/shrink: 2/1 up/down: 64/-132 (-68) | function old new delta | setup_processor 610 670 +60 | cpuinfo_arc700 76 80 +4 | arc_cpu_mumbojumbo 752 620 -132 Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
1 parent 711c1f2
rw.h
/*
* Copyright (c) 2016 HGST, a Western Digital Company.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#ifndef _RDMA_RW_H
#define _RDMA_RW_H
#include <linux/dma-mapping.h>
#include <linux/scatterlist.h>
#include <rdma/ib_verbs.h>
#include <rdma/rdma_cm.h>
#include <rdma/mr_pool.h>
struct rdma_rw_ctx {
/* number of RDMA READ/WRITE WRs (not counting MR WRs) */
u32 nr_ops;
/* tag for the union below: */
u8 type;
union {
/* for mapping a single SGE: */
struct {
struct ib_sge sge;
struct ib_rdma_wr wr;
} single;
/* for mapping of multiple SGEs: */
struct {
struct ib_sge *sges;
struct ib_rdma_wr *wrs;
} map;
/* for registering multiple WRs: */
struct rdma_rw_reg_ctx {
struct ib_sge sge;
struct ib_rdma_wr wr;
struct ib_reg_wr reg_wr;
struct ib_send_wr inv_wr;
struct ib_mr *mr;
} *reg;
struct {
struct rdma_rw_reg_ctx data;
struct rdma_rw_reg_ctx prot;
struct ib_send_wr sig_inv_wr;
struct ib_mr *sig_mr;
struct ib_sge sig_sge;
struct ib_sig_handover_wr sig_wr;
} *sig;
};
};
int rdma_rw_ctx_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
struct scatterlist *sg, u32 sg_cnt, u32 sg_offset,
u64 remote_addr, u32 rkey, enum dma_data_direction dir);
void rdma_rw_ctx_destroy(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
struct scatterlist *sg, u32 sg_cnt,
enum dma_data_direction dir);
int rdma_rw_ctx_signature_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
u8 port_num, struct scatterlist *sg, u32 sg_cnt,
struct scatterlist *prot_sg, u32 prot_sg_cnt,
struct ib_sig_attrs *sig_attrs, u64 remote_addr, u32 rkey,
enum dma_data_direction dir);
void rdma_rw_ctx_destroy_signature(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
u8 port_num, struct scatterlist *sg, u32 sg_cnt,
struct scatterlist *prot_sg, u32 prot_sg_cnt,
enum dma_data_direction dir);
struct ib_send_wr *rdma_rw_ctx_wrs(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
u8 port_num, struct ib_cqe *cqe, struct ib_send_wr *chain_wr);
int rdma_rw_ctx_post(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
struct ib_cqe *cqe, struct ib_send_wr *chain_wr);
void rdma_rw_init_qp(struct ib_device *dev, struct ib_qp_init_attr *attr);
int rdma_rw_init_mrs(struct ib_qp *qp, struct ib_qp_init_attr *attr);
void rdma_rw_cleanup_mrs(struct ib_qp *qp);
#endif /* _RDMA_RW_H */
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