ceph/src/spdk/lib/nvme/nvme_quirks.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (c) Intel Corporation.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include "nvme_internal.h"
  35
  36 struct nvme_quirk {
  37         struct spdk_pci_id      id;
  38         uint64_t                flags;
  39 };
  40
  41 static const struct nvme_quirk nvme_quirks[] = {
  42         {       {SPDK_PCI_VID_INTEL, 0x0953, SPDK_PCI_ANY_ID, SPDK_PCI_ANY_ID},
  43                 NVME_INTEL_QUIRK_READ_LATENCY |
  44                 NVME_INTEL_QUIRK_WRITE_LATENCY |
  45                 NVME_INTEL_QUIRK_STRIPING |
  46                 NVME_QUIRK_DELAY_BEFORE_ENABLE
  47         },
  48         {       {SPDK_PCI_VID_INTEL, 0x0A53, SPDK_PCI_ANY_ID, SPDK_PCI_ANY_ID},
  49                 NVME_INTEL_QUIRK_STRIPING
  50         },
  51         {       {SPDK_PCI_VID_INTEL, 0x0A54, SPDK_PCI_ANY_ID, SPDK_PCI_ANY_ID},
  52                 NVME_INTEL_QUIRK_STRIPING
  53         },
  54         {       {SPDK_PCI_VID_MEMBLAZE, 0x0540, SPDK_PCI_ANY_ID, SPDK_PCI_ANY_ID},
  55                 NVME_QUIRK_DELAY_BEFORE_CHK_RDY
  56         },
  57         {       {0x0000, 0x0000, 0x0000, 0x0000}, 0}
  58 };
  59
  60 /* Compare each field. SPDK_PCI_ANY_ID in s1 matches everything */
  61 static bool
  62 pci_id_match(const struct spdk_pci_id *s1, const struct spdk_pci_id *s2)
  63 {
  64         if ((s1->vendor_id == SPDK_PCI_ANY_ID || s1->vendor_id == s2->vendor_id) &&
  65             (s1->device_id == SPDK_PCI_ANY_ID || s1->device_id == s2->device_id) &&
  66             (s1->subvendor_id == SPDK_PCI_ANY_ID || s1->subvendor_id == s2->subvendor_id) &&
  67             (s1->subdevice_id == SPDK_PCI_ANY_ID || s1->subdevice_id == s2->subdevice_id)) {
  68                 return true;
  69         }
  70         return false;
  71 }
  72
  73 uint64_t
  74 nvme_get_quirks(const struct spdk_pci_id *id)
  75 {
  76         const struct nvme_quirk *quirk = nvme_quirks;
  77
  78         while (quirk->id.vendor_id) {
  79                 if (pci_id_match(&quirk->id, id)) {
  80                         return quirk->flags;
  81                 }
  82                 quirk++;
  83         }
  84         return false;
  85 }