cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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otx2_cpt_devlink.c (2806B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/* Copyright (C) 2021 Marvell. */
      3
      4#include "otx2_cpt_devlink.h"
      5
      6static int otx2_cpt_dl_egrp_create(struct devlink *dl, u32 id,
      7				   struct devlink_param_gset_ctx *ctx)
      8{
      9	struct otx2_cpt_devlink *cpt_dl = devlink_priv(dl);
     10	struct otx2_cptpf_dev *cptpf = cpt_dl->cptpf;
     11
     12	return otx2_cpt_dl_custom_egrp_create(cptpf, ctx);
     13}
     14
     15static int otx2_cpt_dl_egrp_delete(struct devlink *dl, u32 id,
     16				   struct devlink_param_gset_ctx *ctx)
     17{
     18	struct otx2_cpt_devlink *cpt_dl = devlink_priv(dl);
     19	struct otx2_cptpf_dev *cptpf = cpt_dl->cptpf;
     20
     21	return otx2_cpt_dl_custom_egrp_delete(cptpf, ctx);
     22}
     23
     24static int otx2_cpt_dl_uc_info(struct devlink *dl, u32 id,
     25			       struct devlink_param_gset_ctx *ctx)
     26{
     27	struct otx2_cpt_devlink *cpt_dl = devlink_priv(dl);
     28	struct otx2_cptpf_dev *cptpf = cpt_dl->cptpf;
     29
     30	otx2_cpt_print_uc_dbg_info(cptpf);
     31
     32	return 0;
     33}
     34
     35enum otx2_cpt_dl_param_id {
     36	OTX2_CPT_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
     37	OTX2_CPT_DEVLINK_PARAM_ID_EGRP_CREATE,
     38	OTX2_CPT_DEVLINK_PARAM_ID_EGRP_DELETE,
     39};
     40
     41static const struct devlink_param otx2_cpt_dl_params[] = {
     42	DEVLINK_PARAM_DRIVER(OTX2_CPT_DEVLINK_PARAM_ID_EGRP_CREATE,
     43			     "egrp_create", DEVLINK_PARAM_TYPE_STRING,
     44			     BIT(DEVLINK_PARAM_CMODE_RUNTIME),
     45			     otx2_cpt_dl_uc_info, otx2_cpt_dl_egrp_create,
     46			     NULL),
     47	DEVLINK_PARAM_DRIVER(OTX2_CPT_DEVLINK_PARAM_ID_EGRP_DELETE,
     48			     "egrp_delete", DEVLINK_PARAM_TYPE_STRING,
     49			     BIT(DEVLINK_PARAM_CMODE_RUNTIME),
     50			     otx2_cpt_dl_uc_info, otx2_cpt_dl_egrp_delete,
     51			     NULL),
     52};
     53
     54static int otx2_cpt_devlink_info_get(struct devlink *devlink,
     55				     struct devlink_info_req *req,
     56				     struct netlink_ext_ack *extack)
     57{
     58	return devlink_info_driver_name_put(req, "rvu_cptpf");
     59}
     60
     61static const struct devlink_ops otx2_cpt_devlink_ops = {
     62	.info_get = otx2_cpt_devlink_info_get,
     63};
     64
     65int otx2_cpt_register_dl(struct otx2_cptpf_dev *cptpf)
     66{
     67	struct device *dev = &cptpf->pdev->dev;
     68	struct otx2_cpt_devlink *cpt_dl;
     69	struct devlink *dl;
     70	int ret;
     71
     72	dl = devlink_alloc(&otx2_cpt_devlink_ops,
     73			   sizeof(struct otx2_cpt_devlink), dev);
     74	if (!dl) {
     75		dev_warn(dev, "devlink_alloc failed\n");
     76		return -ENOMEM;
     77	}
     78
     79	cpt_dl = devlink_priv(dl);
     80	cpt_dl->dl = dl;
     81	cpt_dl->cptpf = cptpf;
     82	cptpf->dl = dl;
     83	ret = devlink_params_register(dl, otx2_cpt_dl_params,
     84				      ARRAY_SIZE(otx2_cpt_dl_params));
     85	if (ret) {
     86		dev_err(dev, "devlink params register failed with error %d",
     87			ret);
     88		devlink_free(dl);
     89		return ret;
     90	}
     91
     92	devlink_register(dl);
     93
     94	return 0;
     95}
     96
     97void otx2_cpt_unregister_dl(struct otx2_cptpf_dev *cptpf)
     98{
     99	struct devlink *dl = cptpf->dl;
    100
    101	if (!dl)
    102		return;
    103
    104	devlink_unregister(dl);
    105	devlink_params_unregister(dl, otx2_cpt_dl_params,
    106				  ARRAY_SIZE(otx2_cpt_dl_params));
    107	devlink_free(dl);
    108}