drivers/net/bnxt/tf_core/tf_device.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2019-2020 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #include "tf_device.h"
   7 #include "tf_device_p4.h"
   8 #include "tfp.h"
   9 #include "tf_em.h"
  10
  11 struct tf;
  12
  13 /* Forward declarations */
  14 static int tf_dev_unbind_p4(struct tf *tfp);
  15
  16 /**
  17  * Device specific bind function, WH+
  18  *
  19  * [in] tfp
  20  *   Pointer to TF handle
  21  *
  22  * [in] shadow_copy
  23  *   Flag controlling shadow copy DB creation
  24  *
  25  * [in] resources
  26  *   Pointer to resource allocation information
  27  *
  28  * [out] dev_handle
  29  *   Device handle
  30  *
  31  * Returns
  32  *   - (0) if successful.
  33  *   - (-EINVAL) on parameter or internal failure.
  34  */
  35 static int
  36 tf_dev_bind_p4(struct tf *tfp,
  37                bool shadow_copy,
  38                struct tf_session_resources *resources,
  39                struct tf_dev_info *dev_handle)
  40 {
  41         int rc;
  42         int frc;
  43         struct tf_ident_cfg_parms ident_cfg;
  44         struct tf_tbl_cfg_parms tbl_cfg;
  45         struct tf_tcam_cfg_parms tcam_cfg;
  46         struct tf_em_cfg_parms em_cfg;
  47         struct tf_if_tbl_cfg_parms if_tbl_cfg;
  48
  49         dev_handle->type = TF_DEVICE_TYPE_WH;
  50         /* Initial function initialization */
  51         dev_handle->ops = &tf_dev_ops_p4_init;
  52
  53         /* Initialize the modules */
  54
  55         ident_cfg.num_elements = TF_IDENT_TYPE_MAX;
  56         ident_cfg.cfg = tf_ident_p4;
  57         ident_cfg.shadow_copy = shadow_copy;
  58         ident_cfg.resources = resources;
  59         rc = tf_ident_bind(tfp, &ident_cfg);
  60         if (rc) {
  61                 TFP_DRV_LOG(ERR,
  62                             "Identifier initialization failure\n");
  63                 goto fail;
  64         }
  65
  66         tbl_cfg.num_elements = TF_TBL_TYPE_MAX;
  67         tbl_cfg.cfg = tf_tbl_p4;
  68         tbl_cfg.shadow_copy = shadow_copy;
  69         tbl_cfg.resources = resources;
  70         rc = tf_tbl_bind(tfp, &tbl_cfg);
  71         if (rc) {
  72                 TFP_DRV_LOG(ERR,
  73                             "Table initialization failure\n");
  74                 goto fail;
  75         }
  76
  77         tcam_cfg.num_elements = TF_TCAM_TBL_TYPE_MAX;
  78         tcam_cfg.cfg = tf_tcam_p4;
  79         tcam_cfg.shadow_copy = shadow_copy;
  80         tcam_cfg.resources = resources;
  81         rc = tf_tcam_bind(tfp, &tcam_cfg);
  82         if (rc) {
  83                 TFP_DRV_LOG(ERR,
  84                             "TCAM initialization failure\n");
  85                 goto fail;
  86         }
  87
  88         /*
  89          * EEM
  90          */
  91         em_cfg.num_elements = TF_EM_TBL_TYPE_MAX;
  92         em_cfg.cfg = tf_em_ext_p4;
  93         em_cfg.resources = resources;
  94         em_cfg.mem_type = TF_EEM_MEM_TYPE_HOST;
  95
  96         rc = tf_em_ext_common_bind(tfp, &em_cfg);
  97         if (rc) {
  98                 TFP_DRV_LOG(ERR,
  99                             "EEM initialization failure\n");
 100                 goto fail;
 101         }
 102
 103         /*
 104          * EM
 105          */
 106         em_cfg.num_elements = TF_EM_TBL_TYPE_MAX;
 107         em_cfg.cfg = tf_em_int_p4;
 108         em_cfg.resources = resources;
 109         em_cfg.mem_type = 0; /* Not used by EM */
 110
 111         rc = tf_em_int_bind(tfp, &em_cfg);
 112         if (rc) {
 113                 TFP_DRV_LOG(ERR,
 114                             "EM initialization failure\n");
 115                 goto fail;
 116         }
 117
 118         /*
 119          * IF_TBL
 120          */
 121         if_tbl_cfg.num_elements = TF_IF_TBL_TYPE_MAX;
 122         if_tbl_cfg.cfg = tf_if_tbl_p4;
 123         if_tbl_cfg.shadow_copy = shadow_copy;
 124         rc = tf_if_tbl_bind(tfp, &if_tbl_cfg);
 125         if (rc) {
 126                 TFP_DRV_LOG(ERR,
 127                             "IF Table initialization failure\n");
 128                 goto fail;
 129         }
 130
 131         /* Final function initialization */
 132         dev_handle->ops = &tf_dev_ops_p4;
 133
 134         return 0;
 135
 136  fail:
 137         /* Cleanup of already created modules */
 138         frc = tf_dev_unbind_p4(tfp);
 139         if (frc)
 140                 return frc;
 141
 142         return rc;
 143 }
 144
 145 /**
 146  * Device specific unbind function, WH+
 147  *
 148  * [in] tfp
 149  *   Pointer to TF handle
 150  *
 151  * Returns
 152  *   - (0) if successful.
 153  *   - (-EINVAL) on failure.
 154  */
 155 static int
 156 tf_dev_unbind_p4(struct tf *tfp)
 157 {
 158         int rc = 0;
 159         bool fail = false;
 160
 161         /* Unbind all the support modules. As this is only done on
 162          * close we only report errors as everything has to be cleaned
 163          * up regardless.
 164          *
 165          * In case of residuals TCAMs are cleaned up first as to
 166          * invalidate the pipeline in a clean manner.
 167          */
 168         rc = tf_tcam_unbind(tfp);
 169         if (rc) {
 170                 TFP_DRV_LOG(ERR,
 171                             "Device unbind failed, TCAM\n");
 172                 fail = true;
 173         }
 174
 175         rc = tf_ident_unbind(tfp);
 176         if (rc) {
 177                 TFP_DRV_LOG(ERR,
 178                             "Device unbind failed, Identifier\n");
 179                 fail = true;
 180         }
 181
 182         rc = tf_tbl_unbind(tfp);
 183         if (rc) {
 184                 TFP_DRV_LOG(ERR,
 185                             "Device unbind failed, Table Type\n");
 186                 fail = true;
 187         }
 188
 189         rc = tf_em_ext_common_unbind(tfp);
 190         if (rc) {
 191                 TFP_DRV_LOG(ERR,
 192                             "Device unbind failed, EEM\n");
 193                 fail = true;
 194         }
 195
 196         rc = tf_em_int_unbind(tfp);
 197         if (rc) {
 198                 TFP_DRV_LOG(ERR,
 199                             "Device unbind failed, EM\n");
 200                 fail = true;
 201         }
 202
 203         rc = tf_if_tbl_unbind(tfp);
 204         if (rc) {
 205                 TFP_DRV_LOG(ERR,
 206                             "Device unbind failed, IF Table Type\n");
 207                 fail = true;
 208         }
 209
 210         if (fail)
 211                 return -1;
 212
 213         return rc;
 214 }
 215
 216 int
 217 tf_dev_bind(struct tf *tfp __rte_unused,
 218             enum tf_device_type type,
 219             bool shadow_copy,
 220             struct tf_session_resources *resources,
 221             struct tf_dev_info *dev_handle)
 222 {
 223         switch (type) {
 224         case TF_DEVICE_TYPE_WH:
 225                 return tf_dev_bind_p4(tfp,
 226                                       shadow_copy,
 227                                       resources,
 228                                       dev_handle);
 229         default:
 230                 TFP_DRV_LOG(ERR,
 231                             "No such device\n");
 232                 return -ENODEV;
 233         }
 234 }
 235
 236 int
 237 tf_dev_unbind(struct tf *tfp,
 238               struct tf_dev_info *dev_handle)
 239 {
 240         switch (dev_handle->type) {
 241         case TF_DEVICE_TYPE_WH:
 242                 return tf_dev_unbind_p4(tfp);
 243         default:
 244                 TFP_DRV_LOG(ERR,
 245                             "No such device\n");
 246                 return -ENODEV;
 247         }
 248 }