usr/src/lib/sun_sas/common/Sun_sasGetSASPhyAttributes.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #include    <sun_sas.h>
  28
  29 /*
  30  * Retrieves the statistics for a specified port on an adapter
  31  */
  32 HBA_STATUS Sun_sasGetSASPhyAttributes(HBA_HANDLE handle,
  33     HBA_UINT32 port, HBA_UINT32 phy, SMHBA_SAS_PHY *pAttributes)
  34 {
  35         const char      ROUTINE[] = "Sun_sasGetSASPhyAttributes";
  36         HBA_STATUS              status = HBA_STATUS_OK;
  37         struct sun_sas_hba      *hba_ptr;
  38         struct sun_sas_port     *hba_port_ptr;
  39         struct phy_info         *phy_ptr;
  40
  41         /* Validate the arguments */
  42         if (pAttributes == NULL) {
  43                 log(LOG_DEBUG, ROUTINE, "NULL response buffer");
  44                 return (HBA_STATUS_ERROR_ARG);
  45         }
  46         lock(&all_hbas_lock);
  47
  48         if ((hba_ptr = Retrieve_Sun_sasHandle(handle)) == NULL) {
  49                 log(LOG_DEBUG, ROUTINE, "Invalid handle %08lx", handle);
  50                 unlock(&all_hbas_lock);
  51                 return (HBA_STATUS_ERROR_INVALID_HANDLE);
  52         }
  53
  54         /* Check for stale data */
  55         status = verifyAdapter(hba_ptr);
  56         if (status != HBA_STATUS_OK) {
  57                 log(LOG_DEBUG, ROUTINE, "Verify adapter failed");
  58                 unlock(&all_hbas_lock);
  59                 return (status);
  60         }
  61
  62         for (hba_port_ptr = hba_ptr->first_port;
  63             hba_port_ptr != NULL;
  64             hba_port_ptr = hba_port_ptr->next) {
  65                 if (hba_port_ptr->index == port) {
  66                         break;
  67                 }
  68         }
  69
  70         if (hba_port_ptr == NULL) {
  71                 log(LOG_DEBUG, ROUTINE, "Invalid port index");
  72                 unlock(&all_hbas_lock);
  73                 return (HBA_STATUS_ERROR_ILLEGAL_INDEX);
  74         }
  75
  76         /* match phy index. */
  77         if (phy >= hba_port_ptr->port_attributes.PortSpecificAttribute.
  78             SASPort->NumberofPhys) {
  79                 log(LOG_DEBUG, ROUTINE, "Invalid phy index %d", phy);
  80                 unlock(&all_hbas_lock);
  81                 return (HBA_STATUS_ERROR_ILLEGAL_INDEX);
  82         } else {
  83                 for (phy_ptr = hba_port_ptr->first_phy; phy_ptr != NULL;
  84                     phy_ptr = phy_ptr->next) {
  85                         if (phy == phy_ptr->index) {
  86                                 (void) memset(pAttributes, 0,
  87                                     sizeof (SMHBA_SAS_PHY));
  88                                 (void) memcpy(pAttributes, &phy_ptr->phy,
  89                                     sizeof (SMHBA_SAS_PHY));
  90                                 unlock(&all_hbas_lock);
  91                                 return (HBA_STATUS_OK);
  92                         }
  93                 }
  94         }
  95
  96         unlock(&all_hbas_lock);
  97         log(LOG_DEBUG, ROUTINE, "Illegal phy index %d", phy);
  98         return (HBA_STATUS_ERROR_ILLEGAL_INDEX);
  99 }