drivers/net/bnxt/bnxt_cpr.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) Broadcom Limited.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Broadcom Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <rte_malloc.h>
  35
  36 #include "bnxt.h"
  37 #include "bnxt_cpr.h"
  38 #include "bnxt_hwrm.h"
  39 #include "bnxt_ring.h"
  40 #include "hsi_struct_def_dpdk.h"
  41
  42 /*
  43  * Async event handling
  44  */
  45 void bnxt_handle_async_event(struct bnxt *bp,
  46                              struct cmpl_base *cmp)
  47 {
  48         struct hwrm_async_event_cmpl *async_cmp =
  49                                 (struct hwrm_async_event_cmpl *)cmp;
  50         uint16_t event_id = rte_le_to_cpu_16(async_cmp->event_id);
  51
  52         /* TODO: HWRM async events are not defined yet */
  53         /* Needs to handle: link events, error events, etc. */
  54         switch (event_id) {
  55         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE:
  56         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CHANGE:
  57         case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CFG_CHANGE:
  58                 bnxt_link_update_op(bp->eth_dev, 1);
  59                 break;
  60         default:
  61                 RTE_LOG(DEBUG, PMD, "handle_async_event id = 0x%x\n", event_id);
  62                 break;
  63         }
  64 }
  65
  66 void bnxt_handle_fwd_req(struct bnxt *bp, struct cmpl_base *cmpl)
  67 {
  68         struct hwrm_exec_fwd_resp_input *fwreq;
  69         struct hwrm_fwd_req_cmpl *fwd_cmpl = (struct hwrm_fwd_req_cmpl *)cmpl;
  70         struct input *fwd_cmd;
  71         uint16_t fw_vf_id;
  72         uint16_t vf_id;
  73         uint16_t req_len;
  74         int rc;
  75
  76         if (bp->pf.active_vfs <= 0) {
  77                 RTE_LOG(ERR, PMD, "Forwarded VF with no active VFs\n");
  78                 return;
  79         }
  80
  81         /* Qualify the fwd request */
  82         fw_vf_id = rte_le_to_cpu_16(fwd_cmpl->source_id);
  83         vf_id = fw_vf_id - bp->pf.first_vf_id;
  84
  85         req_len = (rte_le_to_cpu_16(fwd_cmpl->req_len_type) &
  86                    HWRM_FWD_REQ_CMPL_REQ_LEN_MASK) >>
  87                 HWRM_FWD_REQ_CMPL_REQ_LEN_SFT;
  88         if (req_len > sizeof(fwreq->encap_request))
  89                 req_len = sizeof(fwreq->encap_request);
  90
  91         /* Locate VF's forwarded command */
  92         fwd_cmd = (struct input *)bp->pf.vf_info[vf_id].req_buf;
  93
  94         if (fw_vf_id < bp->pf.first_vf_id ||
  95             fw_vf_id >= (bp->pf.first_vf_id) + bp->pf.active_vfs) {
  96                 RTE_LOG(ERR, PMD,
  97                 "FWD req's source_id 0x%x out of range 0x%x - 0x%x (%d %d)\n",
  98                         fw_vf_id, bp->pf.first_vf_id,
  99                         (bp->pf.first_vf_id) + bp->pf.active_vfs - 1,
 100                         bp->pf.first_vf_id, bp->pf.active_vfs);
 101                 goto reject;
 102         }
 103
 104         if (bnxt_rcv_msg_from_vf(bp, vf_id, fwd_cmd) == true) {
 105                 /*
 106                  * In older firmware versions, the MAC had to be all zeros for
 107                  * the VF to set it's MAC via hwrm_func_vf_cfg. Set to all
 108                  * zeros if it's being configured and has been ok'd by caller.
 109                  */
 110                 if (fwd_cmd->req_type == HWRM_FUNC_VF_CFG) {
 111                         struct hwrm_func_vf_cfg_input *vfc = (void *)fwd_cmd;
 112
 113                         if (vfc->enables &
 114                             HWRM_FUNC_VF_CFG_INPUT_ENABLES_DFLT_MAC_ADDR) {
 115                                 bnxt_hwrm_func_vf_mac(bp, vf_id,
 116                                 (const uint8_t *)"\x00\x00\x00\x00\x00");
 117                         }
 118                 }
 119                 if (fwd_cmd->req_type == HWRM_CFA_L2_SET_RX_MASK) {
 120                         struct hwrm_cfa_l2_set_rx_mask_input *srm =
 121                                                         (void *)fwd_cmd;
 122
 123                         srm->vlan_tag_tbl_addr = rte_cpu_to_le_64(0);
 124                         srm->num_vlan_tags = rte_cpu_to_le_32(0);
 125                         srm->mask &= ~rte_cpu_to_le_32(
 126                                 HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_VLANONLY |
 127                             HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_VLAN_NONVLAN |
 128                             HWRM_CFA_L2_SET_RX_MASK_INPUT_MASK_ANYVLAN_NONVLAN);
 129                 }
 130                 /* Forward */
 131                 rc = bnxt_hwrm_exec_fwd_resp(bp, fw_vf_id, fwd_cmd, req_len);
 132                 if (rc) {
 133                         RTE_LOG(ERR, PMD,
 134                                 "Failed to send FWD req VF 0x%x, type 0x%x.\n",
 135                                 fw_vf_id - bp->pf.first_vf_id,
 136                                 rte_le_to_cpu_16(fwd_cmd->req_type));
 137                 }
 138                 return;
 139         }
 140
 141 reject:
 142         rc = bnxt_hwrm_reject_fwd_resp(bp, fw_vf_id, fwd_cmd, req_len);
 143         if (rc) {
 144                 RTE_LOG(ERR, PMD,
 145                         "Failed to send REJECT req VF 0x%x, type 0x%x.\n",
 146                         fw_vf_id - bp->pf.first_vf_id,
 147                         rte_le_to_cpu_16(fwd_cmd->req_type));
 148         }
 149
 150         return;
 151 }
 152
 153 /* For the default completion ring only */
 154 int bnxt_alloc_def_cp_ring(struct bnxt *bp)
 155 {
 156         struct bnxt_cp_ring_info *cpr = bp->def_cp_ring;
 157         struct bnxt_ring *cp_ring = cpr->cp_ring_struct;
 158         int rc;
 159
 160         rc = bnxt_hwrm_ring_alloc(bp, cp_ring,
 161                                   HWRM_RING_ALLOC_INPUT_RING_TYPE_L2_CMPL,
 162                                   0, HWRM_NA_SIGNATURE,
 163                                   HWRM_NA_SIGNATURE);
 164         if (rc)
 165                 goto err_out;
 166         cpr->cp_doorbell = bp->pdev->mem_resource[2].addr;
 167         B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
 168         if (BNXT_PF(bp))
 169                 rc = bnxt_hwrm_func_cfg_def_cp(bp);
 170         else
 171                 rc = bnxt_hwrm_vf_func_cfg_def_cp(bp);
 172
 173 err_out:
 174         return rc;
 175 }
 176
 177 void bnxt_free_def_cp_ring(struct bnxt *bp)
 178 {
 179         struct bnxt_cp_ring_info *cpr = bp->def_cp_ring;
 180
 181         if (cpr == NULL)
 182                 return;
 183
 184         bnxt_free_ring(cpr->cp_ring_struct);
 185         cpr->cp_ring_struct = NULL;
 186         rte_free(cpr->cp_ring_struct);
 187         rte_free(cpr);
 188         bp->def_cp_ring = NULL;
 189 }
 190
 191 /* For the default completion ring only */
 192 int bnxt_init_def_ring_struct(struct bnxt *bp, unsigned int socket_id)
 193 {
 194         struct bnxt_cp_ring_info *cpr;
 195         struct bnxt_ring *ring;
 196
 197         cpr = rte_zmalloc_socket("cpr",
 198                                  sizeof(struct bnxt_cp_ring_info),
 199                                  RTE_CACHE_LINE_SIZE, socket_id);
 200         if (cpr == NULL)
 201                 return -ENOMEM;
 202         bp->def_cp_ring = cpr;
 203
 204         ring = rte_zmalloc_socket("bnxt_cp_ring_struct",
 205                                   sizeof(struct bnxt_ring),
 206                                   RTE_CACHE_LINE_SIZE, socket_id);
 207         if (ring == NULL)
 208                 return -ENOMEM;
 209         cpr->cp_ring_struct = ring;
 210         ring->bd = (void *)cpr->cp_desc_ring;
 211         ring->bd_dma = cpr->cp_desc_mapping;
 212         ring->ring_size = rte_align32pow2(DEFAULT_CP_RING_SIZE);
 213         ring->ring_mask = ring->ring_size - 1;
 214         ring->vmem_size = 0;
 215         ring->vmem = NULL;
 216
 217         return 0;
 218 }