1 /* Broadcom NetXtreme-C/E network driver.
3 * Copyright (c) 2017 Broadcom Limited
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation.
10 #include <linux/pci.h>
11 #include <linux/netdevice.h>
12 #include <net/devlink.h>
16 #include "bnxt_devlink.h"
18 static const struct devlink_ops bnxt_dl_ops = {
19 #ifdef CONFIG_BNXT_SRIOV
20 .eswitch_mode_set = bnxt_dl_eswitch_mode_set,
21 .eswitch_mode_get = bnxt_dl_eswitch_mode_get,
22 #endif /* CONFIG_BNXT_SRIOV */
25 enum bnxt_dl_param_id {
26 BNXT_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX,
27 BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK,
30 static const struct bnxt_dl_nvm_param nvm_params[] = {
31 {DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV, NVM_OFF_ENABLE_SRIOV,
32 BNXT_NVM_SHARED_CFG, 1},
33 {DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI, NVM_OFF_IGNORE_ARI,
34 BNXT_NVM_SHARED_CFG, 1},
35 {DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
36 NVM_OFF_MSIX_VEC_PER_PF_MAX, BNXT_NVM_SHARED_CFG, 10},
37 {DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
38 NVM_OFF_MSIX_VEC_PER_PF_MIN, BNXT_NVM_SHARED_CFG, 7},
39 {BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK, NVM_OFF_DIS_GRE_VER_CHECK,
40 BNXT_NVM_SHARED_CFG, 1},
43 static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg,
44 int msg_len, union devlink_param_value *val)
46 struct hwrm_nvm_get_variable_input *req = msg;
47 void *data_addr = NULL, *buf = NULL;
48 struct bnxt_dl_nvm_param nvm_param;
49 int bytesize, idx = 0, rc, i;
50 dma_addr_t data_dma_addr;
52 /* Get/Set NVM CFG parameter is supported only on PFs */
56 for (i = 0; i < ARRAY_SIZE(nvm_params); i++) {
57 if (nvm_params[i].id == param_id) {
58 nvm_param = nvm_params[i];
63 if (i == ARRAY_SIZE(nvm_params))
66 if (nvm_param.dir_type == BNXT_NVM_PORT_CFG)
68 else if (nvm_param.dir_type == BNXT_NVM_FUNC_CFG)
69 idx = bp->pf.fw_fid - BNXT_FIRST_PF_FID;
71 bytesize = roundup(nvm_param.num_bits, BITS_PER_BYTE) / BITS_PER_BYTE;
74 if (nvm_param.num_bits == 1)
89 data_addr = dma_alloc_coherent(&bp->pdev->dev, bytesize,
90 &data_dma_addr, GFP_KERNEL);
94 req->dest_data_addr = cpu_to_le64(data_dma_addr);
95 req->data_len = cpu_to_le16(nvm_param.num_bits);
96 req->option_num = cpu_to_le16(nvm_param.offset);
97 req->index_0 = cpu_to_le16(idx);
99 req->dimensions = cpu_to_le16(1);
101 if (req->req_type == cpu_to_le16(HWRM_NVM_SET_VARIABLE))
102 memcpy(data_addr, buf, bytesize);
104 rc = hwrm_send_message(bp, msg, msg_len, HWRM_CMD_TIMEOUT);
105 if (!rc && req->req_type == cpu_to_le16(HWRM_NVM_GET_VARIABLE))
106 memcpy(buf, data_addr, bytesize);
108 dma_free_coherent(&bp->pdev->dev, bytesize, data_addr, data_dma_addr);
109 if (rc == HWRM_ERR_CODE_RESOURCE_ACCESS_DENIED) {
110 netdev_err(bp->dev, "PF does not have admin privileges to modify NVM config\n");
118 static int bnxt_dl_nvm_param_get(struct devlink *dl, u32 id,
119 struct devlink_param_gset_ctx *ctx)
121 struct hwrm_nvm_get_variable_input req = {0};
122 struct bnxt *bp = bnxt_get_bp_from_dl(dl);
125 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_GET_VARIABLE, -1, -1);
126 rc = bnxt_hwrm_nvm_req(bp, id, &req, sizeof(req), &ctx->val);
128 if (id == BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK)
129 ctx->val.vbool = !ctx->val.vbool;
134 static int bnxt_dl_nvm_param_set(struct devlink *dl, u32 id,
135 struct devlink_param_gset_ctx *ctx)
137 struct hwrm_nvm_set_variable_input req = {0};
138 struct bnxt *bp = bnxt_get_bp_from_dl(dl);
140 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_NVM_SET_VARIABLE, -1, -1);
142 if (id == BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK)
143 ctx->val.vbool = !ctx->val.vbool;
145 return bnxt_hwrm_nvm_req(bp, id, &req, sizeof(req), &ctx->val);
148 static int bnxt_dl_msix_validate(struct devlink *dl, u32 id,
149 union devlink_param_value val,
150 struct netlink_ext_ack *extack)
154 if (id == DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX)
155 max_val = BNXT_MSIX_VEC_MAX;
157 if (id == DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN)
158 max_val = BNXT_MSIX_VEC_MIN_MAX;
160 if (val.vu32 > max_val) {
161 NL_SET_ERR_MSG_MOD(extack, "MSIX value is exceeding the range");
168 static const struct devlink_param bnxt_dl_params[] = {
169 DEVLINK_PARAM_GENERIC(ENABLE_SRIOV,
170 BIT(DEVLINK_PARAM_CMODE_PERMANENT),
171 bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,
173 DEVLINK_PARAM_GENERIC(IGNORE_ARI,
174 BIT(DEVLINK_PARAM_CMODE_PERMANENT),
175 bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,
177 DEVLINK_PARAM_GENERIC(MSIX_VEC_PER_PF_MAX,
178 BIT(DEVLINK_PARAM_CMODE_PERMANENT),
179 bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,
180 bnxt_dl_msix_validate),
181 DEVLINK_PARAM_GENERIC(MSIX_VEC_PER_PF_MIN,
182 BIT(DEVLINK_PARAM_CMODE_PERMANENT),
183 bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,
184 bnxt_dl_msix_validate),
185 DEVLINK_PARAM_DRIVER(BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK,
186 "gre_ver_check", DEVLINK_PARAM_TYPE_BOOL,
187 BIT(DEVLINK_PARAM_CMODE_PERMANENT),
188 bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,
192 static const struct devlink_param bnxt_dl_port_params[] = {
195 int bnxt_dl_register(struct bnxt *bp)
200 if (bp->hwrm_spec_code < 0x10600) {
201 netdev_warn(bp->dev, "Firmware does not support NVM params");
205 dl = devlink_alloc(&bnxt_dl_ops, sizeof(struct bnxt_dl));
207 netdev_warn(bp->dev, "devlink_alloc failed");
211 bnxt_link_bp_to_dl(bp, dl);
213 /* Add switchdev eswitch mode setting, if SRIOV supported */
214 if (pci_find_ext_capability(bp->pdev, PCI_EXT_CAP_ID_SRIOV) &&
215 bp->hwrm_spec_code > 0x10803)
216 bp->eswitch_mode = DEVLINK_ESWITCH_MODE_LEGACY;
218 rc = devlink_register(dl, &bp->pdev->dev);
220 netdev_warn(bp->dev, "devlink_register failed. rc=%d", rc);
224 rc = devlink_params_register(dl, bnxt_dl_params,
225 ARRAY_SIZE(bnxt_dl_params));
227 netdev_warn(bp->dev, "devlink_params_register failed. rc=%d",
232 devlink_port_attrs_set(&bp->dl_port, DEVLINK_PORT_FLAVOUR_PHYSICAL,
233 bp->pf.port_id, false, 0,
234 bp->switch_id, sizeof(bp->switch_id));
235 rc = devlink_port_register(dl, &bp->dl_port, bp->pf.port_id);
237 netdev_err(bp->dev, "devlink_port_register failed");
238 goto err_dl_param_unreg;
240 devlink_port_type_eth_set(&bp->dl_port, bp->dev);
242 rc = devlink_port_params_register(&bp->dl_port, bnxt_dl_port_params,
243 ARRAY_SIZE(bnxt_dl_port_params));
245 netdev_err(bp->dev, "devlink_port_params_register failed");
246 goto err_dl_port_unreg;
249 devlink_params_publish(dl);
254 devlink_port_unregister(&bp->dl_port);
256 devlink_params_unregister(dl, bnxt_dl_params,
257 ARRAY_SIZE(bnxt_dl_params));
259 devlink_unregister(dl);
261 bnxt_link_bp_to_dl(bp, NULL);
266 void bnxt_dl_unregister(struct bnxt *bp)
268 struct devlink *dl = bp->dl;
273 devlink_port_params_unregister(&bp->dl_port, bnxt_dl_port_params,
274 ARRAY_SIZE(bnxt_dl_port_params));
275 devlink_port_unregister(&bp->dl_port);
276 devlink_params_unregister(dl, bnxt_dl_params,
277 ARRAY_SIZE(bnxt_dl_params));
278 devlink_unregister(dl);