linux/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
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   1/* Broadcom NetXtreme-C/E network driver.
   2 *
   3 * Copyright (c) 2014-2016 Broadcom Corporation
   4 * Copyright (c) 2016-2018 Broadcom Limited
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation.
   9 */
  10
  11#include <linux/module.h>
  12#include <linux/pci.h>
  13#include <linux/netdevice.h>
  14#include <linux/if_vlan.h>
  15#include <linux/interrupt.h>
  16#include <linux/etherdevice.h>
  17#include "bnxt_hsi.h"
  18#include "bnxt.h"
  19#include "bnxt_ulp.h"
  20#include "bnxt_sriov.h"
  21#include "bnxt_vfr.h"
  22#include "bnxt_ethtool.h"
  23
  24#ifdef CONFIG_BNXT_SRIOV
  25static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
  26                                          struct bnxt_vf_info *vf, u16 event_id)
  27{
  28        struct hwrm_fwd_async_event_cmpl_output *resp = bp->hwrm_cmd_resp_addr;
  29        struct hwrm_fwd_async_event_cmpl_input req = {0};
  30        struct hwrm_async_event_cmpl *async_cmpl;
  31        int rc = 0;
  32
  33        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_ASYNC_EVENT_CMPL, -1, -1);
  34        if (vf)
  35                req.encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
  36        else
  37                /* broadcast this async event to all VFs */
  38                req.encap_async_event_target_id = cpu_to_le16(0xffff);
  39        async_cmpl = (struct hwrm_async_event_cmpl *)req.encap_async_event_cmpl;
  40        async_cmpl->type = cpu_to_le16(ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
  41        async_cmpl->event_id = cpu_to_le16(event_id);
  42
  43        mutex_lock(&bp->hwrm_cmd_lock);
  44        rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
  45
  46        if (rc) {
  47                netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
  48                           rc);
  49                goto fwd_async_event_cmpl_exit;
  50        }
  51
  52        if (resp->error_code) {
  53                netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl error %d\n",
  54                           resp->error_code);
  55                rc = -1;
  56        }
  57
  58fwd_async_event_cmpl_exit:
  59        mutex_unlock(&bp->hwrm_cmd_lock);
  60        return rc;
  61}
  62
  63static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
  64{
  65        if (!test_bit(BNXT_STATE_OPEN, &bp->state)) {
  66                netdev_err(bp->dev, "vf ndo called though PF is down\n");
  67                return -EINVAL;
  68        }
  69        if (!bp->pf.active_vfs) {
  70                netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
  71                return -EINVAL;
  72        }
  73        if (vf_id >= bp->pf.active_vfs) {
  74                netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
  75                return -EINVAL;
  76        }
  77        return 0;
  78}
  79
  80int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
  81{
  82        struct hwrm_func_cfg_input req = {0};
  83        struct bnxt *bp = netdev_priv(dev);
  84        struct bnxt_vf_info *vf;
  85        bool old_setting = false;
  86        u32 func_flags;
  87        int rc;
  88
  89        if (bp->hwrm_spec_code < 0x10701)
  90                return -ENOTSUPP;
  91
  92        rc = bnxt_vf_ndo_prep(bp, vf_id);
  93        if (rc)
  94                return rc;
  95
  96        vf = &bp->pf.vf[vf_id];
  97        if (vf->flags & BNXT_VF_SPOOFCHK)
  98                old_setting = true;
  99        if (old_setting == setting)
 100                return 0;
 101
 102        func_flags = vf->func_flags;
 103        if (setting)
 104                func_flags |= FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_ENABLE;
 105        else
 106                func_flags |= FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_DISABLE;
 107        /*TODO: if the driver supports VLAN filter on guest VLAN,
 108         * the spoof check should also include vlan anti-spoofing
 109         */
 110        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
 111        req.fid = cpu_to_le16(vf->fw_fid);
 112        req.flags = cpu_to_le32(func_flags);
 113        rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 114        if (!rc) {
 115                vf->func_flags = func_flags;
 116                if (setting)
 117                        vf->flags |= BNXT_VF_SPOOFCHK;
 118                else
 119                        vf->flags &= ~BNXT_VF_SPOOFCHK;
 120        }
 121        return rc;
 122}
 123
 124int bnxt_set_vf_trust(struct net_device *dev, int vf_id, bool trusted)
 125{
 126        struct bnxt *bp = netdev_priv(dev);
 127        struct bnxt_vf_info *vf;
 128
 129        if (bnxt_vf_ndo_prep(bp, vf_id))
 130                return -EINVAL;
 131
 132        vf = &bp->pf.vf[vf_id];
 133        if (trusted)
 134                vf->flags |= BNXT_VF_TRUST;
 135        else
 136                vf->flags &= ~BNXT_VF_TRUST;
 137
 138        return 0;
 139}
 140
 141int bnxt_get_vf_config(struct net_device *dev, int vf_id,
 142                       struct ifla_vf_info *ivi)
 143{
 144        struct bnxt *bp = netdev_priv(dev);
 145        struct bnxt_vf_info *vf;
 146        int rc;
 147
 148        rc = bnxt_vf_ndo_prep(bp, vf_id);
 149        if (rc)
 150                return rc;
 151
 152        ivi->vf = vf_id;
 153        vf = &bp->pf.vf[vf_id];
 154
 155        if (is_valid_ether_addr(vf->mac_addr))
 156                memcpy(&ivi->mac, vf->mac_addr, ETH_ALEN);
 157        else
 158                memcpy(&ivi->mac, vf->vf_mac_addr, ETH_ALEN);
 159        ivi->max_tx_rate = vf->max_tx_rate;
 160        ivi->min_tx_rate = vf->min_tx_rate;
 161        ivi->vlan = vf->vlan;
 162        if (vf->flags & BNXT_VF_QOS)
 163                ivi->qos = vf->vlan >> VLAN_PRIO_SHIFT;
 164        else
 165                ivi->qos = 0;
 166        ivi->spoofchk = !!(vf->flags & BNXT_VF_SPOOFCHK);
 167        ivi->trusted = !!(vf->flags & BNXT_VF_TRUST);
 168        if (!(vf->flags & BNXT_VF_LINK_FORCED))
 169                ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
 170        else if (vf->flags & BNXT_VF_LINK_UP)
 171                ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
 172        else
 173                ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
 174
 175        return 0;
 176}
 177
 178int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
 179{
 180        struct hwrm_func_cfg_input req = {0};
 181        struct bnxt *bp = netdev_priv(dev);
 182        struct bnxt_vf_info *vf;
 183        int rc;
 184
 185        rc = bnxt_vf_ndo_prep(bp, vf_id);
 186        if (rc)
 187                return rc;
 188        /* reject bc or mc mac addr, zero mac addr means allow
 189         * VF to use its own mac addr
 190         */
 191        if (is_multicast_ether_addr(mac)) {
 192                netdev_err(dev, "Invalid VF ethernet address\n");
 193                return -EINVAL;
 194        }
 195        vf = &bp->pf.vf[vf_id];
 196
 197        memcpy(vf->mac_addr, mac, ETH_ALEN);
 198        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
 199        req.fid = cpu_to_le16(vf->fw_fid);
 200        req.flags = cpu_to_le32(vf->func_flags);
 201        req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
 202        memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
 203        return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 204}
 205
 206int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos,
 207                     __be16 vlan_proto)
 208{
 209        struct hwrm_func_cfg_input req = {0};
 210        struct bnxt *bp = netdev_priv(dev);
 211        struct bnxt_vf_info *vf;
 212        u16 vlan_tag;
 213        int rc;
 214
 215        if (bp->hwrm_spec_code < 0x10201)
 216                return -ENOTSUPP;
 217
 218        if (vlan_proto != htons(ETH_P_8021Q))
 219                return -EPROTONOSUPPORT;
 220
 221        rc = bnxt_vf_ndo_prep(bp, vf_id);
 222        if (rc)
 223                return rc;
 224
 225        /* TODO: needed to implement proper handling of user priority,
 226         * currently fail the command if there is valid priority
 227         */
 228        if (vlan_id > 4095 || qos)
 229                return -EINVAL;
 230
 231        vf = &bp->pf.vf[vf_id];
 232        vlan_tag = vlan_id;
 233        if (vlan_tag == vf->vlan)
 234                return 0;
 235
 236        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
 237        req.fid = cpu_to_le16(vf->fw_fid);
 238        req.flags = cpu_to_le32(vf->func_flags);
 239        req.dflt_vlan = cpu_to_le16(vlan_tag);
 240        req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
 241        rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 242        if (!rc)
 243                vf->vlan = vlan_tag;
 244        return rc;
 245}
 246
 247int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
 248                   int max_tx_rate)
 249{
 250        struct hwrm_func_cfg_input req = {0};
 251        struct bnxt *bp = netdev_priv(dev);
 252        struct bnxt_vf_info *vf;
 253        u32 pf_link_speed;
 254        int rc;
 255
 256        rc = bnxt_vf_ndo_prep(bp, vf_id);
 257        if (rc)
 258                return rc;
 259
 260        vf = &bp->pf.vf[vf_id];
 261        pf_link_speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
 262        if (max_tx_rate > pf_link_speed) {
 263                netdev_info(bp->dev, "max tx rate %d exceed PF link speed for VF %d\n",
 264                            max_tx_rate, vf_id);
 265                return -EINVAL;
 266        }
 267
 268        if (min_tx_rate > pf_link_speed || min_tx_rate > max_tx_rate) {
 269                netdev_info(bp->dev, "min tx rate %d is invalid for VF %d\n",
 270                            min_tx_rate, vf_id);
 271                return -EINVAL;
 272        }
 273        if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
 274                return 0;
 275        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
 276        req.fid = cpu_to_le16(vf->fw_fid);
 277        req.flags = cpu_to_le32(vf->func_flags);
 278        req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
 279        req.max_bw = cpu_to_le32(max_tx_rate);
 280        req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
 281        req.min_bw = cpu_to_le32(min_tx_rate);
 282        rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 283        if (!rc) {
 284                vf->min_tx_rate = min_tx_rate;
 285                vf->max_tx_rate = max_tx_rate;
 286        }
 287        return rc;
 288}
 289
 290int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link)
 291{
 292        struct bnxt *bp = netdev_priv(dev);
 293        struct bnxt_vf_info *vf;
 294        int rc;
 295
 296        rc = bnxt_vf_ndo_prep(bp, vf_id);
 297        if (rc)
 298                return rc;
 299
 300        vf = &bp->pf.vf[vf_id];
 301
 302        vf->flags &= ~(BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED);
 303        switch (link) {
 304        case IFLA_VF_LINK_STATE_AUTO:
 305                vf->flags |= BNXT_VF_LINK_UP;
 306                break;
 307        case IFLA_VF_LINK_STATE_DISABLE:
 308                vf->flags |= BNXT_VF_LINK_FORCED;
 309                break;
 310        case IFLA_VF_LINK_STATE_ENABLE:
 311                vf->flags |= BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED;
 312                break;
 313        default:
 314                netdev_err(bp->dev, "Invalid link option\n");
 315                rc = -EINVAL;
 316                break;
 317        }
 318        if (vf->flags & (BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED))
 319                rc = bnxt_hwrm_fwd_async_event_cmpl(bp, vf,
 320                        ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE);
 321        return rc;
 322}
 323
 324static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
 325{
 326        int i;
 327        struct bnxt_vf_info *vf;
 328
 329        for (i = 0; i < num_vfs; i++) {
 330                vf = &bp->pf.vf[i];
 331                memset(vf, 0, sizeof(*vf));
 332        }
 333        return 0;
 334}
 335
 336static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
 337{
 338        int i, rc = 0;
 339        struct bnxt_pf_info *pf = &bp->pf;
 340        struct hwrm_func_vf_resc_free_input req = {0};
 341
 342        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESC_FREE, -1, -1);
 343
 344        mutex_lock(&bp->hwrm_cmd_lock);
 345        for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
 346                req.vf_id = cpu_to_le16(i);
 347                rc = _hwrm_send_message(bp, &req, sizeof(req),
 348                                        HWRM_CMD_TIMEOUT);
 349                if (rc)
 350                        break;
 351        }
 352        mutex_unlock(&bp->hwrm_cmd_lock);
 353        return rc;
 354}
 355
 356static void bnxt_free_vf_resources(struct bnxt *bp)
 357{
 358        struct pci_dev *pdev = bp->pdev;
 359        int i;
 360
 361        kfree(bp->pf.vf_event_bmap);
 362        bp->pf.vf_event_bmap = NULL;
 363
 364        for (i = 0; i < 4; i++) {
 365                if (bp->pf.hwrm_cmd_req_addr[i]) {
 366                        dma_free_coherent(&pdev->dev, BNXT_PAGE_SIZE,
 367                                          bp->pf.hwrm_cmd_req_addr[i],
 368                                          bp->pf.hwrm_cmd_req_dma_addr[i]);
 369                        bp->pf.hwrm_cmd_req_addr[i] = NULL;
 370                }
 371        }
 372
 373        kfree(bp->pf.vf);
 374        bp->pf.vf = NULL;
 375}
 376
 377static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
 378{
 379        struct pci_dev *pdev = bp->pdev;
 380        u32 nr_pages, size, i, j, k = 0;
 381
 382        bp->pf.vf = kcalloc(num_vfs, sizeof(struct bnxt_vf_info), GFP_KERNEL);
 383        if (!bp->pf.vf)
 384                return -ENOMEM;
 385
 386        bnxt_set_vf_attr(bp, num_vfs);
 387
 388        size = num_vfs * BNXT_HWRM_REQ_MAX_SIZE;
 389        nr_pages = size / BNXT_PAGE_SIZE;
 390        if (size & (BNXT_PAGE_SIZE - 1))
 391                nr_pages++;
 392
 393        for (i = 0; i < nr_pages; i++) {
 394                bp->pf.hwrm_cmd_req_addr[i] =
 395                        dma_alloc_coherent(&pdev->dev, BNXT_PAGE_SIZE,
 396                                           &bp->pf.hwrm_cmd_req_dma_addr[i],
 397                                           GFP_KERNEL);
 398
 399                if (!bp->pf.hwrm_cmd_req_addr[i])
 400                        return -ENOMEM;
 401
 402                for (j = 0; j < BNXT_HWRM_REQS_PER_PAGE && k < num_vfs; j++) {
 403                        struct bnxt_vf_info *vf = &bp->pf.vf[k];
 404
 405                        vf->hwrm_cmd_req_addr = bp->pf.hwrm_cmd_req_addr[i] +
 406                                                j * BNXT_HWRM_REQ_MAX_SIZE;
 407                        vf->hwrm_cmd_req_dma_addr =
 408                                bp->pf.hwrm_cmd_req_dma_addr[i] + j *
 409                                BNXT_HWRM_REQ_MAX_SIZE;
 410                        k++;
 411                }
 412        }
 413
 414        /* Max 128 VF's */
 415        bp->pf.vf_event_bmap = kzalloc(16, GFP_KERNEL);
 416        if (!bp->pf.vf_event_bmap)
 417                return -ENOMEM;
 418
 419        bp->pf.hwrm_cmd_req_pages = nr_pages;
 420        return 0;
 421}
 422
 423static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
 424{
 425        struct hwrm_func_buf_rgtr_input req = {0};
 426
 427        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_BUF_RGTR, -1, -1);
 428
 429        req.req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
 430        req.req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
 431        req.req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
 432        req.req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
 433        req.req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
 434        req.req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
 435        req.req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
 436
 437        return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 438}
 439
 440/* Only called by PF to reserve resources for VFs, returns actual number of
 441 * VFs configured, or < 0 on error.
 442 */
 443static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs)
 444{
 445        struct hwrm_func_vf_resource_cfg_input req = {0};
 446        struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
 447        u16 vf_tx_rings, vf_rx_rings, vf_cp_rings;
 448        u16 vf_stat_ctx, vf_vnics, vf_ring_grps;
 449        struct bnxt_pf_info *pf = &bp->pf;
 450        int i, rc = 0, min = 1;
 451        u16 vf_msix = 0;
 452
 453        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESOURCE_CFG, -1, -1);
 454
 455        if (bp->flags & BNXT_FLAG_CHIP_P5) {
 456                vf_msix = hw_resc->max_nqs - bnxt_nq_rings_in_use(bp);
 457                vf_ring_grps = 0;
 458        } else {
 459                vf_ring_grps = hw_resc->max_hw_ring_grps - bp->rx_nr_rings;
 460        }
 461        vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp);
 462        vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp);
 463        if (bp->flags & BNXT_FLAG_AGG_RINGS)
 464                vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings * 2;
 465        else
 466                vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings;
 467        vf_tx_rings = hw_resc->max_tx_rings - bp->tx_nr_rings;
 468        vf_vnics = hw_resc->max_vnics - bp->nr_vnics;
 469        vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
 470
 471        req.min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
 472        req.max_rsscos_ctx = cpu_to_le16(BNXT_VF_MAX_RSS_CTX);
 473        if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
 474                min = 0;
 475                req.min_rsscos_ctx = cpu_to_le16(min);
 476        }
 477        if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL ||
 478            pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
 479                req.min_cmpl_rings = cpu_to_le16(min);
 480                req.min_tx_rings = cpu_to_le16(min);
 481                req.min_rx_rings = cpu_to_le16(min);
 482                req.min_l2_ctxs = cpu_to_le16(min);
 483                req.min_vnics = cpu_to_le16(min);
 484                req.min_stat_ctx = cpu_to_le16(min);
 485                if (!(bp->flags & BNXT_FLAG_CHIP_P5))
 486                        req.min_hw_ring_grps = cpu_to_le16(min);
 487        } else {
 488                vf_cp_rings /= num_vfs;
 489                vf_tx_rings /= num_vfs;
 490                vf_rx_rings /= num_vfs;
 491                vf_vnics /= num_vfs;
 492                vf_stat_ctx /= num_vfs;
 493                vf_ring_grps /= num_vfs;
 494
 495                req.min_cmpl_rings = cpu_to_le16(vf_cp_rings);
 496                req.min_tx_rings = cpu_to_le16(vf_tx_rings);
 497                req.min_rx_rings = cpu_to_le16(vf_rx_rings);
 498                req.min_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
 499                req.min_vnics = cpu_to_le16(vf_vnics);
 500                req.min_stat_ctx = cpu_to_le16(vf_stat_ctx);
 501                req.min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
 502        }
 503        req.max_cmpl_rings = cpu_to_le16(vf_cp_rings);
 504        req.max_tx_rings = cpu_to_le16(vf_tx_rings);
 505        req.max_rx_rings = cpu_to_le16(vf_rx_rings);
 506        req.max_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
 507        req.max_vnics = cpu_to_le16(vf_vnics);
 508        req.max_stat_ctx = cpu_to_le16(vf_stat_ctx);
 509        req.max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
 510        if (bp->flags & BNXT_FLAG_CHIP_P5)
 511                req.max_msix = cpu_to_le16(vf_msix / num_vfs);
 512
 513        mutex_lock(&bp->hwrm_cmd_lock);
 514        for (i = 0; i < num_vfs; i++) {
 515                req.vf_id = cpu_to_le16(pf->first_vf_id + i);
 516                rc = _hwrm_send_message(bp, &req, sizeof(req),
 517                                        HWRM_CMD_TIMEOUT);
 518                if (rc) {
 519                        rc = -ENOMEM;
 520                        break;
 521                }
 522                pf->active_vfs = i + 1;
 523                pf->vf[i].fw_fid = pf->first_vf_id + i;
 524        }
 525        mutex_unlock(&bp->hwrm_cmd_lock);
 526        if (pf->active_vfs) {
 527                u16 n = pf->active_vfs;
 528
 529                hw_resc->max_tx_rings -= le16_to_cpu(req.min_tx_rings) * n;
 530                hw_resc->max_rx_rings -= le16_to_cpu(req.min_rx_rings) * n;
 531                hw_resc->max_hw_ring_grps -= le16_to_cpu(req.min_hw_ring_grps) *
 532                                             n;
 533                hw_resc->max_cp_rings -= le16_to_cpu(req.min_cmpl_rings) * n;
 534                hw_resc->max_rsscos_ctxs -= pf->active_vfs;
 535                hw_resc->max_stat_ctxs -= le16_to_cpu(req.min_stat_ctx) * n;
 536                hw_resc->max_vnics -= le16_to_cpu(req.min_vnics) * n;
 537                if (bp->flags & BNXT_FLAG_CHIP_P5)
 538                        hw_resc->max_irqs -= vf_msix * n;
 539
 540                rc = pf->active_vfs;
 541        }
 542        return rc;
 543}
 544
 545/* Only called by PF to reserve resources for VFs, returns actual number of
 546 * VFs configured, or < 0 on error.
 547 */
 548static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
 549{
 550        u32 rc = 0, mtu, i;
 551        u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
 552        struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
 553        struct hwrm_func_cfg_input req = {0};
 554        struct bnxt_pf_info *pf = &bp->pf;
 555        int total_vf_tx_rings = 0;
 556        u16 vf_ring_grps;
 557
 558        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
 559
 560        /* Remaining rings are distributed equally amongs VF's for now */
 561        vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp) / num_vfs;
 562        vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp) / num_vfs;
 563        if (bp->flags & BNXT_FLAG_AGG_RINGS)
 564                vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
 565                              num_vfs;
 566        else
 567                vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings) /
 568                              num_vfs;
 569        vf_ring_grps = (hw_resc->max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
 570        vf_tx_rings = (hw_resc->max_tx_rings - bp->tx_nr_rings) / num_vfs;
 571        vf_vnics = (hw_resc->max_vnics - bp->nr_vnics) / num_vfs;
 572        vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
 573
 574        req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MTU |
 575                                  FUNC_CFG_REQ_ENABLES_MRU |
 576                                  FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
 577                                  FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
 578                                  FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
 579                                  FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
 580                                  FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
 581                                  FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
 582                                  FUNC_CFG_REQ_ENABLES_NUM_VNICS |
 583                                  FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
 584
 585        mtu = bp->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
 586        req.mru = cpu_to_le16(mtu);
 587        req.mtu = cpu_to_le16(mtu);
 588
 589        req.num_rsscos_ctxs = cpu_to_le16(1);
 590        req.num_cmpl_rings = cpu_to_le16(vf_cp_rings);
 591        req.num_tx_rings = cpu_to_le16(vf_tx_rings);
 592        req.num_rx_rings = cpu_to_le16(vf_rx_rings);
 593        req.num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
 594        req.num_l2_ctxs = cpu_to_le16(4);
 595
 596        req.num_vnics = cpu_to_le16(vf_vnics);
 597        /* FIXME spec currently uses 1 bit for stats ctx */
 598        req.num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
 599
 600        mutex_lock(&bp->hwrm_cmd_lock);
 601        for (i = 0; i < num_vfs; i++) {
 602                int vf_tx_rsvd = vf_tx_rings;
 603
 604                req.fid = cpu_to_le16(pf->first_vf_id + i);
 605                rc = _hwrm_send_message(bp, &req, sizeof(req),
 606                                        HWRM_CMD_TIMEOUT);
 607                if (rc)
 608                        break;
 609                pf->active_vfs = i + 1;
 610                pf->vf[i].fw_fid = le16_to_cpu(req.fid);
 611                rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
 612                                              &vf_tx_rsvd);
 613                if (rc)
 614                        break;
 615                total_vf_tx_rings += vf_tx_rsvd;
 616        }
 617        mutex_unlock(&bp->hwrm_cmd_lock);
 618        if (rc)
 619                rc = -ENOMEM;
 620        if (pf->active_vfs) {
 621                hw_resc->max_tx_rings -= total_vf_tx_rings;
 622                hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;
 623                hw_resc->max_hw_ring_grps -= vf_ring_grps * num_vfs;
 624                hw_resc->max_cp_rings -= vf_cp_rings * num_vfs;
 625                hw_resc->max_rsscos_ctxs -= num_vfs;
 626                hw_resc->max_stat_ctxs -= vf_stat_ctx * num_vfs;
 627                hw_resc->max_vnics -= vf_vnics * num_vfs;
 628                rc = pf->active_vfs;
 629        }
 630        return rc;
 631}
 632
 633static int bnxt_func_cfg(struct bnxt *bp, int num_vfs)
 634{
 635        if (BNXT_NEW_RM(bp))
 636                return bnxt_hwrm_func_vf_resc_cfg(bp, num_vfs);
 637        else
 638                return bnxt_hwrm_func_cfg(bp, num_vfs);
 639}
 640
 641static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
 642{
 643        int rc = 0, vfs_supported;
 644        int min_rx_rings, min_tx_rings, min_rss_ctxs;
 645        struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
 646        int tx_ok = 0, rx_ok = 0, rss_ok = 0;
 647        int avail_cp, avail_stat;
 648
 649        /* Check if we can enable requested num of vf's. At a mininum
 650         * we require 1 RX 1 TX rings for each VF. In this minimum conf
 651         * features like TPA will not be available.
 652         */
 653        vfs_supported = *num_vfs;
 654
 655        avail_cp = bnxt_get_avail_cp_rings_for_en(bp);
 656        avail_stat = bnxt_get_avail_stat_ctxs_for_en(bp);
 657        avail_cp = min_t(int, avail_cp, avail_stat);
 658
 659        while (vfs_supported) {
 660                min_rx_rings = vfs_supported;
 661                min_tx_rings = vfs_supported;
 662                min_rss_ctxs = vfs_supported;
 663
 664                if (bp->flags & BNXT_FLAG_AGG_RINGS) {
 665                        if (hw_resc->max_rx_rings - bp->rx_nr_rings * 2 >=
 666                            min_rx_rings)
 667                                rx_ok = 1;
 668                } else {
 669                        if (hw_resc->max_rx_rings - bp->rx_nr_rings >=
 670                            min_rx_rings)
 671                                rx_ok = 1;
 672                }
 673                if (hw_resc->max_vnics - bp->nr_vnics < min_rx_rings ||
 674                    avail_cp < min_rx_rings)
 675                        rx_ok = 0;
 676
 677                if (hw_resc->max_tx_rings - bp->tx_nr_rings >= min_tx_rings &&
 678                    avail_cp >= min_tx_rings)
 679                        tx_ok = 1;
 680
 681                if (hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs >=
 682                    min_rss_ctxs)
 683                        rss_ok = 1;
 684
 685                if (tx_ok && rx_ok && rss_ok)
 686                        break;
 687
 688                vfs_supported--;
 689        }
 690
 691        if (!vfs_supported) {
 692                netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
 693                return -EINVAL;
 694        }
 695
 696        if (vfs_supported != *num_vfs) {
 697                netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
 698                            *num_vfs, vfs_supported);
 699                *num_vfs = vfs_supported;
 700        }
 701
 702        rc = bnxt_alloc_vf_resources(bp, *num_vfs);
 703        if (rc)
 704                goto err_out1;
 705
 706        /* Reserve resources for VFs */
 707        rc = bnxt_func_cfg(bp, *num_vfs);
 708        if (rc != *num_vfs) {
 709                if (rc <= 0) {
 710                        netdev_warn(bp->dev, "Unable to reserve resources for SRIOV.\n");
 711                        *num_vfs = 0;
 712                        goto err_out2;
 713                }
 714                netdev_warn(bp->dev, "Only able to reserve resources for %d VFs.\n", rc);
 715                *num_vfs = rc;
 716        }
 717
 718        /* Register buffers for VFs */
 719        rc = bnxt_hwrm_func_buf_rgtr(bp);
 720        if (rc)
 721                goto err_out2;
 722
 723        bnxt_ulp_sriov_cfg(bp, *num_vfs);
 724
 725        rc = pci_enable_sriov(bp->pdev, *num_vfs);
 726        if (rc)
 727                goto err_out2;
 728
 729        return 0;
 730
 731err_out2:
 732        /* Free the resources reserved for various VF's */
 733        bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
 734
 735err_out1:
 736        bnxt_free_vf_resources(bp);
 737
 738        return rc;
 739}
 740
 741void bnxt_sriov_disable(struct bnxt *bp)
 742{
 743        u16 num_vfs = pci_num_vf(bp->pdev);
 744
 745        if (!num_vfs)
 746                return;
 747
 748        /* synchronize VF and VF-rep create and destroy */
 749        mutex_lock(&bp->sriov_lock);
 750        bnxt_vf_reps_destroy(bp);
 751
 752        if (pci_vfs_assigned(bp->pdev)) {
 753                bnxt_hwrm_fwd_async_event_cmpl(
 754                        bp, NULL, ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
 755                netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
 756                            num_vfs);
 757        } else {
 758                pci_disable_sriov(bp->pdev);
 759                /* Free the HW resources reserved for various VF's */
 760                bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
 761        }
 762        mutex_unlock(&bp->sriov_lock);
 763
 764        bnxt_free_vf_resources(bp);
 765
 766        bp->pf.active_vfs = 0;
 767        /* Reclaim all resources for the PF. */
 768        rtnl_lock();
 769        bnxt_restore_pf_fw_resources(bp);
 770        rtnl_unlock();
 771
 772        bnxt_ulp_sriov_cfg(bp, 0);
 773}
 774
 775int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
 776{
 777        struct net_device *dev = pci_get_drvdata(pdev);
 778        struct bnxt *bp = netdev_priv(dev);
 779
 780        if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
 781                netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
 782                return 0;
 783        }
 784
 785        rtnl_lock();
 786        if (!netif_running(dev)) {
 787                netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
 788                rtnl_unlock();
 789                return 0;
 790        }
 791        bp->sriov_cfg = true;
 792        rtnl_unlock();
 793
 794        if (pci_vfs_assigned(bp->pdev)) {
 795                netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
 796                num_vfs = 0;
 797                goto sriov_cfg_exit;
 798        }
 799
 800        /* Check if enabled VFs is same as requested */
 801        if (num_vfs && num_vfs == bp->pf.active_vfs)
 802                goto sriov_cfg_exit;
 803
 804        /* if there are previous existing VFs, clean them up */
 805        bnxt_sriov_disable(bp);
 806        if (!num_vfs)
 807                goto sriov_cfg_exit;
 808
 809        bnxt_sriov_enable(bp, &num_vfs);
 810
 811sriov_cfg_exit:
 812        bp->sriov_cfg = false;
 813        wake_up(&bp->sriov_cfg_wait);
 814
 815        return num_vfs;
 816}
 817
 818static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 819                              void *encap_resp, __le64 encap_resp_addr,
 820                              __le16 encap_resp_cpr, u32 msg_size)
 821{
 822        int rc = 0;
 823        struct hwrm_fwd_resp_input req = {0};
 824        struct hwrm_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
 825
 826        if (BNXT_FWD_RESP_SIZE_ERR(msg_size))
 827                return -EINVAL;
 828
 829        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_RESP, -1, -1);
 830
 831        /* Set the new target id */
 832        req.target_id = cpu_to_le16(vf->fw_fid);
 833        req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
 834        req.encap_resp_len = cpu_to_le16(msg_size);
 835        req.encap_resp_addr = encap_resp_addr;
 836        req.encap_resp_cmpl_ring = encap_resp_cpr;
 837        memcpy(req.encap_resp, encap_resp, msg_size);
 838
 839        mutex_lock(&bp->hwrm_cmd_lock);
 840        rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 841
 842        if (rc) {
 843                netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
 844                goto fwd_resp_exit;
 845        }
 846
 847        if (resp->error_code) {
 848                netdev_err(bp->dev, "hwrm_fwd_resp error %d\n",
 849                           resp->error_code);
 850                rc = -1;
 851        }
 852
 853fwd_resp_exit:
 854        mutex_unlock(&bp->hwrm_cmd_lock);
 855        return rc;
 856}
 857
 858static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 859                                  u32 msg_size)
 860{
 861        int rc = 0;
 862        struct hwrm_reject_fwd_resp_input req = {0};
 863        struct hwrm_reject_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
 864
 865        if (BNXT_REJ_FWD_RESP_SIZE_ERR(msg_size))
 866                return -EINVAL;
 867
 868        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_REJECT_FWD_RESP, -1, -1);
 869        /* Set the new target id */
 870        req.target_id = cpu_to_le16(vf->fw_fid);
 871        req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
 872        memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
 873
 874        mutex_lock(&bp->hwrm_cmd_lock);
 875        rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 876
 877        if (rc) {
 878                netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
 879                goto fwd_err_resp_exit;
 880        }
 881
 882        if (resp->error_code) {
 883                netdev_err(bp->dev, "hwrm_fwd_err_resp error %d\n",
 884                           resp->error_code);
 885                rc = -1;
 886        }
 887
 888fwd_err_resp_exit:
 889        mutex_unlock(&bp->hwrm_cmd_lock);
 890        return rc;
 891}
 892
 893static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
 894                                   u32 msg_size)
 895{
 896        int rc = 0;
 897        struct hwrm_exec_fwd_resp_input req = {0};
 898        struct hwrm_exec_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
 899
 900        if (BNXT_EXEC_FWD_RESP_SIZE_ERR(msg_size))
 901                return -EINVAL;
 902
 903        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_EXEC_FWD_RESP, -1, -1);
 904        /* Set the new target id */
 905        req.target_id = cpu_to_le16(vf->fw_fid);
 906        req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
 907        memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
 908
 909        mutex_lock(&bp->hwrm_cmd_lock);
 910        rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 911
 912        if (rc) {
 913                netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
 914                goto exec_fwd_resp_exit;
 915        }
 916
 917        if (resp->error_code) {
 918                netdev_err(bp->dev, "hwrm_exec_fw_resp error %d\n",
 919                           resp->error_code);
 920                rc = -1;
 921        }
 922
 923exec_fwd_resp_exit:
 924        mutex_unlock(&bp->hwrm_cmd_lock);
 925        return rc;
 926}
 927
 928static int bnxt_vf_configure_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
 929{
 930        u32 msg_size = sizeof(struct hwrm_func_vf_cfg_input);
 931        struct hwrm_func_vf_cfg_input *req =
 932                (struct hwrm_func_vf_cfg_input *)vf->hwrm_cmd_req_addr;
 933
 934        /* Allow VF to set a valid MAC address, if trust is set to on or
 935         * if the PF assigned MAC address is zero
 936         */
 937        if (req->enables & cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR)) {
 938                if (is_valid_ether_addr(req->dflt_mac_addr) &&
 939                    ((vf->flags & BNXT_VF_TRUST) ||
 940                     !is_valid_ether_addr(vf->mac_addr) ||
 941                     ether_addr_equal(req->dflt_mac_addr, vf->mac_addr))) {
 942                        ether_addr_copy(vf->vf_mac_addr, req->dflt_mac_addr);
 943                        return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
 944                }
 945                return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
 946        }
 947        return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
 948}
 949
 950static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
 951{
 952        u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
 953        struct hwrm_cfa_l2_filter_alloc_input *req =
 954                (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
 955        bool mac_ok = false;
 956
 957        if (!is_valid_ether_addr((const u8 *)req->l2_addr))
 958                return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
 959
 960        /* Allow VF to set a valid MAC address, if trust is set to on.
 961         * Or VF MAC address must first match MAC address in PF's context.
 962         * Otherwise, it must match the VF MAC address if firmware spec >=
 963         * 1.2.2
 964         */
 965        if (vf->flags & BNXT_VF_TRUST) {
 966                mac_ok = true;
 967        } else if (is_valid_ether_addr(vf->mac_addr)) {
 968                if (ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
 969                        mac_ok = true;
 970        } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
 971                if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
 972                        mac_ok = true;
 973        } else {
 974                /* There are two cases:
 975                 * 1.If firmware spec < 0x10202,VF MAC address is not forwarded
 976                 *   to the PF and so it doesn't have to match
 977                 * 2.Allow VF to modify it's own MAC when PF has not assigned a
 978                 *   valid MAC address and firmware spec >= 0x10202
 979                 */
 980                mac_ok = true;
 981        }
 982        if (mac_ok)
 983                return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
 984        return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
 985}
 986
 987static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
 988{
 989        int rc = 0;
 990
 991        if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
 992                /* real link */
 993                rc = bnxt_hwrm_exec_fwd_resp(
 994                        bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
 995        } else {
 996                struct hwrm_port_phy_qcfg_output phy_qcfg_resp;
 997                struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
 998
 999                phy_qcfg_req =
1000                (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
1001                mutex_lock(&bp->hwrm_cmd_lock);
1002                memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
1003                       sizeof(phy_qcfg_resp));
1004                mutex_unlock(&bp->hwrm_cmd_lock);
1005                phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp));
1006                phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
1007                phy_qcfg_resp.valid = 1;
1008
1009                if (vf->flags & BNXT_VF_LINK_UP) {
1010                        /* if physical link is down, force link up on VF */
1011                        if (phy_qcfg_resp.link !=
1012                            PORT_PHY_QCFG_RESP_LINK_LINK) {
1013                                phy_qcfg_resp.link =
1014                                        PORT_PHY_QCFG_RESP_LINK_LINK;
1015                                phy_qcfg_resp.link_speed = cpu_to_le16(
1016                                        PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
1017                                phy_qcfg_resp.duplex_cfg =
1018                                        PORT_PHY_QCFG_RESP_DUPLEX_CFG_FULL;
1019                                phy_qcfg_resp.duplex_state =
1020                                        PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL;
1021                                phy_qcfg_resp.pause =
1022                                        (PORT_PHY_QCFG_RESP_PAUSE_TX |
1023                                         PORT_PHY_QCFG_RESP_PAUSE_RX);
1024                        }
1025                } else {
1026                        /* force link down */
1027                        phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
1028                        phy_qcfg_resp.link_speed = 0;
1029                        phy_qcfg_resp.duplex_state =
1030                                PORT_PHY_QCFG_RESP_DUPLEX_STATE_HALF;
1031                        phy_qcfg_resp.pause = 0;
1032                }
1033                rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
1034                                        phy_qcfg_req->resp_addr,
1035                                        phy_qcfg_req->cmpl_ring,
1036                                        sizeof(phy_qcfg_resp));
1037        }
1038        return rc;
1039}
1040
1041static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
1042{
1043        int rc = 0;
1044        struct input *encap_req = vf->hwrm_cmd_req_addr;
1045        u32 req_type = le16_to_cpu(encap_req->req_type);
1046
1047        switch (req_type) {
1048        case HWRM_FUNC_VF_CFG:
1049                rc = bnxt_vf_configure_mac(bp, vf);
1050                break;
1051        case HWRM_CFA_L2_FILTER_ALLOC:
1052                rc = bnxt_vf_validate_set_mac(bp, vf);
1053                break;
1054        case HWRM_FUNC_CFG:
1055                /* TODO Validate if VF is allowed to change mac address,
1056                 * mtu, num of rings etc
1057                 */
1058                rc = bnxt_hwrm_exec_fwd_resp(
1059                        bp, vf, sizeof(struct hwrm_func_cfg_input));
1060                break;
1061        case HWRM_PORT_PHY_QCFG:
1062                rc = bnxt_vf_set_link(bp, vf);
1063                break;
1064        default:
1065                break;
1066        }
1067        return rc;
1068}
1069
1070void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1071{
1072        u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
1073
1074        /* Scan through VF's and process commands */
1075        while (1) {
1076                vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
1077                if (vf_id >= active_vfs)
1078                        break;
1079
1080                clear_bit(vf_id, bp->pf.vf_event_bmap);
1081                bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
1082                i = vf_id + 1;
1083        }
1084}
1085
1086void bnxt_update_vf_mac(struct bnxt *bp)
1087{
1088        struct hwrm_func_qcaps_input req = {0};
1089        struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
1090
1091        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
1092        req.fid = cpu_to_le16(0xffff);
1093
1094        mutex_lock(&bp->hwrm_cmd_lock);
1095        if (_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT))
1096                goto update_vf_mac_exit;
1097
1098        /* Store MAC address from the firmware.  There are 2 cases:
1099         * 1. MAC address is valid.  It is assigned from the PF and we
1100         *    need to override the current VF MAC address with it.
1101         * 2. MAC address is zero.  The VF will use a random MAC address by
1102         *    default but the stored zero MAC will allow the VF user to change
1103         *    the random MAC address using ndo_set_mac_address() if he wants.
1104         */
1105        if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr))
1106                memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
1107
1108        /* overwrite netdev dev_addr with admin VF MAC */
1109        if (is_valid_ether_addr(bp->vf.mac_addr))
1110                memcpy(bp->dev->dev_addr, bp->vf.mac_addr, ETH_ALEN);
1111update_vf_mac_exit:
1112        mutex_unlock(&bp->hwrm_cmd_lock);
1113}
1114
1115int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
1116{
1117        struct hwrm_func_vf_cfg_input req = {0};
1118        int rc = 0;
1119
1120        if (!BNXT_VF(bp))
1121                return 0;
1122
1123        if (bp->hwrm_spec_code < 0x10202) {
1124                if (is_valid_ether_addr(bp->vf.mac_addr))
1125                        rc = -EADDRNOTAVAIL;
1126                goto mac_done;
1127        }
1128        bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_CFG, -1, -1);
1129        req.enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
1130        memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
1131        rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
1132mac_done:
1133        if (rc && strict) {
1134                rc = -EADDRNOTAVAIL;
1135                netdev_warn(bp->dev, "VF MAC address %pM not approved by the PF\n",
1136                            mac);
1137                return rc;
1138        }
1139        return 0;
1140}
1141#else
1142
1143void bnxt_sriov_disable(struct bnxt *bp)
1144{
1145}
1146
1147void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1148{
1149        netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
1150}
1151
1152void bnxt_update_vf_mac(struct bnxt *bp)
1153{
1154}
1155
1156int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
1157{
1158        return 0;
1159}
1160#endif
1161