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_type.h"
  12 #include "tf_tcam.h"
  13 #include "tf_em.h"
  14
  15 /**
  16  * Device specific function that retrieves the MAX number of HCAPI
  17  * types the device supports.
  18  *
  19  * [in] tfp
  20  *   Pointer to TF handle
  21  *
  22  * [out] max_types
  23  *   Pointer to the MAX number of HCAPI types supported
  24  *
  25  * Returns
  26  *   - (0) if successful.
  27  *   - (-EINVAL) on failure.
  28  */
  29 static int
  30 tf_dev_p4_get_max_types(struct tf *tfp __rte_unused,
  31                         uint16_t *max_types)
  32 {
  33         if (max_types == NULL)
  34                 return -EINVAL;
  35
  36         *max_types = CFA_RESOURCE_TYPE_P4_LAST + 1;
  37
  38         return 0;
  39 }
  40
  41 /**
  42  * Device specific function that retrieves the WC TCAM slices the
  43  * device supports.
  44  *
  45  * [in] tfp
  46  *   Pointer to TF handle
  47  *
  48  * [out] slice_size
  49  *   Pointer to the WC TCAM slice size
  50  *
  51  * [out] num_slices_per_row
  52  *   Pointer to the WC TCAM row slice configuration
  53  *
  54  * Returns
  55  *   - (0) if successful.
  56  *   - (-EINVAL) on failure.
  57  */
  58 static int
  59 tf_dev_p4_get_tcam_slice_info(struct tf *tfp __rte_unused,
  60                               enum tf_tcam_tbl_type type,
  61                               uint16_t key_sz,
  62                               uint16_t *num_slices_per_row)
  63 {
  64 #define CFA_P4_WC_TCAM_SLICES_PER_ROW 2
  65 #define CFA_P4_WC_TCAM_SLICE_SIZE     12
  66
  67         if (type == TF_TCAM_TBL_TYPE_WC_TCAM) {
  68                 *num_slices_per_row = CFA_P4_WC_TCAM_SLICES_PER_ROW;
  69                 if (key_sz > *num_slices_per_row * CFA_P4_WC_TCAM_SLICE_SIZE)
  70                         return -ENOTSUP;
  71         } else { /* for other type of tcam */
  72                 *num_slices_per_row = 1;
  73         }
  74
  75         return 0;
  76 }
  77
  78 /**
  79  * Truflow P4 device specific functions
  80  */
  81 const struct tf_dev_ops tf_dev_ops_p4 = {
  82         .tf_dev_get_max_types = tf_dev_p4_get_max_types,
  83         .tf_dev_get_tcam_slice_info = tf_dev_p4_get_tcam_slice_info,
  84         .tf_dev_alloc_ident = tf_ident_alloc,
  85         .tf_dev_free_ident = tf_ident_free,
  86         .tf_dev_alloc_tbl = tf_tbl_alloc,
  87         .tf_dev_free_tbl = tf_tbl_free,
  88         .tf_dev_alloc_search_tbl = tf_tbl_alloc_search,
  89         .tf_dev_set_tbl = tf_tbl_set,
  90         .tf_dev_get_tbl = tf_tbl_get,
  91         .tf_dev_alloc_tcam = tf_tcam_alloc,
  92         .tf_dev_free_tcam = tf_tcam_free,
  93         .tf_dev_alloc_search_tcam = tf_tcam_alloc_search,
  94         .tf_dev_set_tcam = tf_tcam_set,
  95         .tf_dev_get_tcam = tf_tcam_get,
  96         .tf_dev_insert_em_entry = tf_em_insert_entry,
  97         .tf_dev_delete_em_entry = tf_em_delete_entry,
  98 };