drivers/net/bnxt/tf_core/tf_device_p4.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2019-2020 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #include <rte_common.h>
   7 #include <cfa_resource_types.h>
   8
   9 #include "tf_device.h"
  10 #include "tf_identifier.h"
  11 #include "tf_tbl.h"
  12 #include "tf_tcam.h"
  13 #include "tf_em.h"
  14 #include "tf_if_tbl.h"
  15
  16 /**
  17  * Device specific function that retrieves the MAX number of HCAPI
  18  * types the device supports.
  19  *
  20  * [in] tfp
  21  *   Pointer to TF handle
  22  *
  23  * [out] max_types
  24  *   Pointer to the MAX number of HCAPI types supported
  25  *
  26  * Returns
  27  *   - (0) if successful.
  28  *   - (-EINVAL) on failure.
  29  */
  30 static int
  31 tf_dev_p4_get_max_types(struct tf *tfp,
  32                         uint16_t *max_types)
  33 {
  34         struct tf_session *tfs;
  35         struct tf_dev_info *dev;
  36         int rc;
  37
  38         if (max_types == NULL || tfp == NULL)
  39                 return -EINVAL;
  40
  41         /* Retrieve the session information */
  42         rc = tf_session_get_session(tfp, &tfs);
  43         if (rc)
  44                 return rc;
  45
  46         /* Retrieve the device information */
  47         rc = tf_session_get_device(tfs, &dev);
  48         if (rc)
  49                 return rc;
  50
  51         if (dev->type == TF_DEVICE_TYPE_WH)
  52                 *max_types = CFA_RESOURCE_TYPE_P4_LAST + 1;
  53         else if (dev->type == TF_DEVICE_TYPE_SR)
  54                 *max_types = CFA_RESOURCE_TYPE_P45_LAST + 1;
  55         else
  56                 return -ENODEV;
  57
  58         return 0;
  59 }
  60
  61 /**
  62  * Device specific function that retrieves the WC TCAM slices the
  63  * device supports.
  64  *
  65  * [in] tfp
  66  *   Pointer to TF handle
  67  *
  68  * [out] slice_size
  69  *   Pointer to the WC TCAM slice size
  70  *
  71  * [out] num_slices_per_row
  72  *   Pointer to the WC TCAM row slice configuration
  73  *
  74  * Returns
  75  *   - (0) if successful.
  76  *   - (-EINVAL) on failure.
  77  */
  78 static int
  79 tf_dev_p4_get_tcam_slice_info(struct tf *tfp __rte_unused,
  80                               enum tf_tcam_tbl_type type,
  81                               uint16_t key_sz,
  82                               uint16_t *num_slices_per_row)
  83 {
  84 #define CFA_P4_WC_TCAM_SLICES_PER_ROW 2
  85 #define CFA_P4_WC_TCAM_SLICE_SIZE     12
  86
  87         if (type == TF_TCAM_TBL_TYPE_WC_TCAM) {
  88                 *num_slices_per_row = CFA_P4_WC_TCAM_SLICES_PER_ROW;
  89                 if (key_sz > *num_slices_per_row * CFA_P4_WC_TCAM_SLICE_SIZE)
  90                         return -ENOTSUP;
  91
  92                 *num_slices_per_row = 1;
  93         } else { /* for other type of tcam */
  94                 *num_slices_per_row = 1;
  95         }
  96
  97         return 0;
  98 }
  99
 100 /**
 101  * Truflow P4 device specific functions
 102  */
 103 const struct tf_dev_ops tf_dev_ops_p4_init = {
 104         .tf_dev_get_max_types = tf_dev_p4_get_max_types,
 105         .tf_dev_get_tcam_slice_info = tf_dev_p4_get_tcam_slice_info,
 106         .tf_dev_alloc_ident = NULL,
 107         .tf_dev_free_ident = NULL,
 108         .tf_dev_search_ident = NULL,
 109         .tf_dev_alloc_ext_tbl = NULL,
 110         .tf_dev_alloc_tbl = NULL,
 111         .tf_dev_free_ext_tbl = NULL,
 112         .tf_dev_free_tbl = NULL,
 113         .tf_dev_alloc_search_tbl = NULL,
 114         .tf_dev_set_tbl = NULL,
 115         .tf_dev_set_ext_tbl = NULL,
 116         .tf_dev_get_tbl = NULL,
 117         .tf_dev_get_bulk_tbl = NULL,
 118         .tf_dev_alloc_tcam = NULL,
 119         .tf_dev_free_tcam = NULL,
 120         .tf_dev_alloc_search_tcam = NULL,
 121         .tf_dev_set_tcam = NULL,
 122         .tf_dev_get_tcam = NULL,
 123         .tf_dev_insert_int_em_entry = NULL,
 124         .tf_dev_delete_int_em_entry = NULL,
 125         .tf_dev_insert_ext_em_entry = NULL,
 126         .tf_dev_delete_ext_em_entry = NULL,
 127         .tf_dev_alloc_tbl_scope = NULL,
 128         .tf_dev_free_tbl_scope = NULL,
 129         .tf_dev_set_if_tbl = NULL,
 130         .tf_dev_get_if_tbl = NULL,
 131         .tf_dev_set_global_cfg = NULL,
 132         .tf_dev_get_global_cfg = NULL,
 133 };
 134
 135 /**
 136  * Truflow P4 device specific functions
 137  */
 138 const struct tf_dev_ops tf_dev_ops_p4 = {
 139         .tf_dev_get_max_types = tf_dev_p4_get_max_types,
 140         .tf_dev_get_tcam_slice_info = tf_dev_p4_get_tcam_slice_info,
 141         .tf_dev_alloc_ident = tf_ident_alloc,
 142         .tf_dev_free_ident = tf_ident_free,
 143         .tf_dev_search_ident = tf_ident_search,
 144         .tf_dev_alloc_tbl = tf_tbl_alloc,
 145         .tf_dev_alloc_ext_tbl = tf_tbl_ext_alloc,
 146         .tf_dev_free_tbl = tf_tbl_free,
 147         .tf_dev_free_ext_tbl = tf_tbl_ext_free,
 148         .tf_dev_alloc_search_tbl = tf_tbl_alloc_search,
 149         .tf_dev_set_tbl = tf_tbl_set,
 150         .tf_dev_set_ext_tbl = tf_tbl_ext_common_set,
 151         .tf_dev_get_tbl = tf_tbl_get,
 152         .tf_dev_get_bulk_tbl = tf_tbl_bulk_get,
 153         .tf_dev_alloc_tcam = tf_tcam_alloc,
 154         .tf_dev_free_tcam = tf_tcam_free,
 155         .tf_dev_alloc_search_tcam = tf_tcam_alloc_search,
 156         .tf_dev_set_tcam = tf_tcam_set,
 157         .tf_dev_get_tcam = NULL,
 158         .tf_dev_insert_int_em_entry = tf_em_insert_int_entry,
 159         .tf_dev_delete_int_em_entry = tf_em_delete_int_entry,
 160         .tf_dev_insert_ext_em_entry = tf_em_insert_ext_entry,
 161         .tf_dev_delete_ext_em_entry = tf_em_delete_ext_entry,
 162         .tf_dev_alloc_tbl_scope = tf_em_ext_common_alloc,
 163         .tf_dev_free_tbl_scope = tf_em_ext_common_free,
 164         .tf_dev_set_if_tbl = tf_if_tbl_set,
 165         .tf_dev_get_if_tbl = tf_if_tbl_get,
 166         .tf_dev_set_global_cfg = tf_global_cfg_set,
 167         .tf_dev_get_global_cfg = tf_global_cfg_get,
 168 };