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         struct tf_global_cfg_cfg_parms global_cfg;
  49
  50         dev_handle->type = TF_DEVICE_TYPE_WH;
  51         /* Initial function initialization */
  52         dev_handle->ops = &tf_dev_ops_p4_init;
  53
  54         /* Initialize the modules */
  55
  56         ident_cfg.num_elements = TF_IDENT_TYPE_MAX;
  57         ident_cfg.cfg = tf_ident_p4;
  58         ident_cfg.shadow_copy = shadow_copy;
  59         ident_cfg.resources = resources;
  60         rc = tf_ident_bind(tfp, &ident_cfg);
  61         if (rc) {
  62                 TFP_DRV_LOG(ERR,
  63                             "Identifier initialization failure\n");
  64                 goto fail;
  65         }
  66
  67         tbl_cfg.num_elements = TF_TBL_TYPE_MAX;
  68         tbl_cfg.cfg = tf_tbl_p4;
  69         tbl_cfg.shadow_copy = shadow_copy;
  70         tbl_cfg.resources = resources;
  71         rc = tf_tbl_bind(tfp, &tbl_cfg);
  72         if (rc) {
  73                 TFP_DRV_LOG(ERR,
  74                             "Table initialization failure\n");
  75                 goto fail;
  76         }
  77
  78         tcam_cfg.num_elements = TF_TCAM_TBL_TYPE_MAX;
  79         tcam_cfg.cfg = tf_tcam_p4;
  80         tcam_cfg.shadow_copy = shadow_copy;
  81         tcam_cfg.resources = resources;
  82         rc = tf_tcam_bind(tfp, &tcam_cfg);
  83         if (rc) {
  84                 TFP_DRV_LOG(ERR,
  85                             "TCAM initialization failure\n");
  86                 goto fail;
  87         }
  88
  89         /*
  90          * EEM
  91          */
  92         em_cfg.num_elements = TF_EM_TBL_TYPE_MAX;
  93         em_cfg.cfg = tf_em_ext_p4;
  94         em_cfg.resources = resources;
  95         em_cfg.mem_type = TF_EEM_MEM_TYPE_HOST;
  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         /*
 132          * GLOBAL_CFG
 133          */
 134         global_cfg.num_elements = TF_GLOBAL_CFG_TYPE_MAX;
 135         global_cfg.cfg = tf_global_cfg_p4;
 136         rc = tf_global_cfg_bind(tfp, &global_cfg);
 137         if (rc) {
 138                 TFP_DRV_LOG(ERR,
 139                             "Global Cfg initialization failure\n");
 140                 goto fail;
 141         }
 142
 143         /* Final function initialization */
 144         dev_handle->ops = &tf_dev_ops_p4;
 145
 146         return 0;
 147
 148  fail:
 149         /* Cleanup of already created modules */
 150         frc = tf_dev_unbind_p4(tfp);
 151         if (frc)
 152                 return frc;
 153
 154         return rc;
 155 }
 156
 157 /**
 158  * Device specific unbind function, WH+
 159  *
 160  * [in] tfp
 161  *   Pointer to TF handle
 162  *
 163  * Returns
 164  *   - (0) if successful.
 165  *   - (-EINVAL) on failure.
 166  */
 167 static int
 168 tf_dev_unbind_p4(struct tf *tfp)
 169 {
 170         int rc = 0;
 171         bool fail = false;
 172
 173         /* Unbind all the support modules. As this is only done on
 174          * close we only report errors as everything has to be cleaned
 175          * up regardless.
 176          *
 177          * In case of residuals TCAMs are cleaned up first as to
 178          * invalidate the pipeline in a clean manner.
 179          */
 180         rc = tf_tcam_unbind(tfp);
 181         if (rc) {
 182                 TFP_DRV_LOG(ERR,
 183                             "Device unbind failed, TCAM\n");
 184                 fail = true;
 185         }
 186
 187         rc = tf_ident_unbind(tfp);
 188         if (rc) {
 189                 TFP_DRV_LOG(ERR,
 190                             "Device unbind failed, Identifier\n");
 191                 fail = true;
 192         }
 193
 194         rc = tf_tbl_unbind(tfp);
 195         if (rc) {
 196                 TFP_DRV_LOG(ERR,
 197                             "Device unbind failed, Table Type\n");
 198                 fail = true;
 199         }
 200
 201         rc = tf_em_ext_common_unbind(tfp);
 202         if (rc) {
 203                 TFP_DRV_LOG(ERR,
 204                             "Device unbind failed, EEM\n");
 205                 fail = true;
 206         }
 207
 208         rc = tf_em_int_unbind(tfp);
 209         if (rc) {
 210                 TFP_DRV_LOG(ERR,
 211                             "Device unbind failed, EM\n");
 212                 fail = true;
 213         }
 214
 215         rc = tf_if_tbl_unbind(tfp);
 216         if (rc) {
 217                 TFP_DRV_LOG(ERR,
 218                             "Device unbind failed, IF Table Type\n");
 219                 fail = true;
 220         }
 221
 222         rc = tf_global_cfg_unbind(tfp);
 223         if (rc) {
 224                 TFP_DRV_LOG(ERR,
 225                             "Device unbind failed, Global Cfg Type\n");
 226                 fail = true;
 227         }
 228
 229         if (fail)
 230                 return -1;
 231
 232         return rc;
 233 }
 234
 235 int
 236 tf_dev_bind(struct tf *tfp __rte_unused,
 237             enum tf_device_type type,
 238             bool shadow_copy,
 239             struct tf_session_resources *resources,
 240             struct tf_dev_info *dev_handle)
 241 {
 242         switch (type) {
 243         case TF_DEVICE_TYPE_WH:
 244                 return tf_dev_bind_p4(tfp,
 245                                       shadow_copy,
 246                                       resources,
 247                                       dev_handle);
 248         default:
 249                 TFP_DRV_LOG(ERR,
 250                             "No such device\n");
 251                 return -ENODEV;
 252         }
 253 }
 254
 255 int
 256 tf_dev_unbind(struct tf *tfp,
 257               struct tf_dev_info *dev_handle)
 258 {
 259         switch (dev_handle->type) {
 260         case TF_DEVICE_TYPE_WH:
 261                 return tf_dev_unbind_p4(tfp);
 262         default:
 263                 TFP_DRV_LOG(ERR,
 264                             "No such device\n");
 265                 return -ENODEV;
 266         }
 267 }