drivers/bus/fslmc/qbman/qbman_debug.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright (C) 2015 Freescale Semiconductor, Inc.
   3  */
   4
   5 #include "compat.h"
   6 #include <fsl_qbman_debug.h>
   7 #include "qbman_portal.h"
   8
   9 /* QBMan portal management command code */
  10 #define QBMAN_BP_QUERY            0x32
  11 #define QBMAN_FQ_QUERY            0x44
  12 #define QBMAN_FQ_QUERY_NP         0x45
  13 #define QBMAN_WQ_QUERY            0x47
  14 #define QBMAN_CGR_QUERY           0x51
  15 #define QBMAN_WRED_QUERY          0x54
  16 #define QBMAN_CGR_STAT_QUERY      0x55
  17 #define QBMAN_CGR_STAT_QUERY_CLR  0x56
  18
  19 struct qbman_fq_query_desc {
  20         uint8_t verb;
  21         uint8_t reserved[3];
  22         uint32_t fqid;
  23         uint8_t reserved2[56];
  24 };
  25
  26 int qbman_fq_query_state(struct qbman_swp *s, uint32_t fqid,
  27                          struct qbman_fq_query_np_rslt *r)
  28 {
  29         struct qbman_fq_query_desc *p;
  30         struct qbman_fq_query_np_rslt *var;
  31
  32         p = (struct qbman_fq_query_desc *)qbman_swp_mc_start(s);
  33         if (!p)
  34                 return -EBUSY;
  35
  36         p->fqid = fqid;
  37         var = qbman_swp_mc_complete(s, p, QBMAN_FQ_QUERY_NP);
  38         if (!var) {
  39                 pr_err("qbman: Query FQID %d NP fields failed, no response\n",
  40                        fqid);
  41                 return -EIO;
  42         }
  43         *r = *var;
  44
  45         /* Decode the outcome */
  46         QBMAN_BUG_ON((r->verb & QBMAN_RESPONSE_VERB_MASK) != QBMAN_FQ_QUERY_NP);
  47
  48         /* Determine success or failure */
  49         if (r->rslt != QBMAN_MC_RSLT_OK) {
  50                 pr_err("Query NP fields of FQID 0x%x failed, code=0x%02x\n",
  51                        fqid, r->rslt);
  52                 return -EIO;
  53         }
  54
  55         return 0;
  56 }
  57
  58 uint32_t qbman_fq_state_frame_count(const struct qbman_fq_query_np_rslt *r)
  59 {
  60         return (r->frm_cnt & 0x00FFFFFF);
  61 }
  62
  63 uint32_t qbman_fq_state_byte_count(const struct qbman_fq_query_np_rslt *r)
  64 {
  65         return r->byte_cnt;
  66 }