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[57];
  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
  31         p = (struct qbman_fq_query_desc *)qbman_swp_mc_start(s);
  32         if (!p)
  33                 return -EBUSY;
  34
  35         p->fqid = fqid;
  36         *r = *(struct qbman_fq_query_np_rslt *)qbman_swp_mc_complete(s, p,
  37                                                 QBMAN_FQ_QUERY_NP);
  38         if (!r) {
  39                 pr_err("qbman: Query FQID %d NP fields failed, no response\n",
  40                        fqid);
  41                 return -EIO;
  42         }
  43
  44         /* Decode the outcome */
  45         QBMAN_BUG_ON((r->verb & QBMAN_RESPONSE_VERB_MASK) != QBMAN_FQ_QUERY_NP);
  46
  47         /* Determine success or failure */
  48         if (r->rslt != QBMAN_MC_RSLT_OK) {
  49                 pr_err("Query NP fields of FQID 0x%x failed, code=0x%02x\n",
  50                        fqid, r->rslt);
  51                 return -EIO;
  52         }
  53
  54         return 0;
  55 }
  56
  57 uint32_t qbman_fq_state_frame_count(const struct qbman_fq_query_np_rslt *r)
  58 {
  59         return (r->frm_cnt & 0x00FFFFFF);
  60 }
  61
  62 uint32_t qbman_fq_state_byte_count(const struct qbman_fq_query_np_rslt *r)
  63 {
  64         return r->byte_cnt;
  65 }