sys/dev/sfxge/sfxge_nvram.c

   1 /*-
   2  * Copyright (c) 2010-2016 Solarflare Communications, Inc.
   3  * All rights reserved.
   4  *
   5  * This software was developed in part by OKTET Labs Ltd. under contract for
   6  * Solarflare Communications, Inc.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33
  34 #include <sys/types.h>
  35 #include <sys/malloc.h>
  36
  37 #include "common/efx.h"
  38 #include "sfxge.h"
  39
  40 /* These data make no real sense, they are here just to make sfupdate happy.
  41  * Any code that would rely on it is broken.
  42  */
  43 static const uint8_t fake_dynamic_cfg_nvram[] = {
  44         0x7a, 0xda, 0x10, 0xef, 0x0c, 0x00, 0x00, 0x00,
  45         0x00, 0x05, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
  46         0x48, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x10,
  47         0x08, 0x00, 0x00, 0x00, 0x90, 0x04, 0x00, 0x52,
  48         0x56, 0x01, 0xc3, 0x78, 0x01, 0x00, 0x03, 0x10,
  49         0x08, 0x00, 0x00, 0x00, 0x90, 0x04, 0x00, 0x52,
  50         0x56, 0x01, 0xc3, 0x78, 0x57, 0x1a, 0x10, 0xef,
  51         0x08, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
  52         0x02, 0x0b, 0x64, 0x7d, 0xee, 0xee, 0xee, 0xee
  53 };
  54
  55 static int
  56 sfxge_nvram_rw(struct sfxge_softc *sc, sfxge_ioc_t *ip, efx_nvram_type_t type,
  57                boolean_t write)
  58 {
  59         efx_nic_t *enp = sc->enp;
  60         size_t total_size = ip->u.nvram.size;
  61         size_t chunk_size;
  62         off_t off;
  63         int rc = 0;
  64         uint8_t *buf;
  65
  66         if (type == EFX_NVRAM_DYNAMIC_CFG && sc->family == EFX_FAMILY_SIENA) {
  67                 if (write)
  68                         return (0);
  69                 rc = copyout(fake_dynamic_cfg_nvram, ip->u.nvram.data,
  70                              MIN(total_size, sizeof(fake_dynamic_cfg_nvram)));
  71                 return (rc);
  72         }
  73
  74         if ((rc = efx_nvram_rw_start(enp, type, &chunk_size)) != 0)
  75                 goto fail1;
  76
  77         buf = malloc(chunk_size, M_TEMP, M_WAITOK);
  78
  79         off = 0;
  80         while (total_size) {
  81                 size_t len = MIN(chunk_size, total_size);
  82
  83                 if (write) {
  84                         rc = copyin(ip->u.nvram.data + off, buf, len);
  85                         if (rc != 0)
  86                                 goto fail3;
  87                         rc = efx_nvram_write_chunk(enp, type,
  88                                                    ip->u.nvram.offset + off, buf, len);
  89                         if (rc != 0)
  90                                 goto fail3;
  91                 } else {
  92                         rc = efx_nvram_read_chunk(enp, type,
  93                                                   ip->u.nvram.offset + off, buf, len);
  94                         if (rc != 0)
  95                                 goto fail3;
  96                         rc = copyout(buf, ip->u.nvram.data + off, len);
  97                         if (rc != 0)
  98                                 goto fail3;
  99                 }
 100
 101                 total_size -= len;
 102                 off += len;
 103         }
 104
 105 fail3:
 106         free(buf, M_TEMP);
 107         efx_nvram_rw_finish(enp, type);
 108 fail1:
 109         return (rc);
 110 }
 111
 112
 113 static int
 114 sfxge_nvram_erase(struct sfxge_softc *sc, efx_nvram_type_t type)
 115 {
 116         efx_nic_t *enp = sc->enp;
 117         size_t chunk_size;
 118         int rc = 0;
 119
 120         if (type == EFX_NVRAM_DYNAMIC_CFG && sc->family == EFX_FAMILY_SIENA)
 121                 return (0);
 122
 123         if ((rc = efx_nvram_rw_start(enp, type, &chunk_size)) != 0)
 124                 return (rc);
 125
 126         rc = efx_nvram_erase(enp, type);
 127
 128         efx_nvram_rw_finish(enp, type);
 129         return (rc);
 130 }
 131
 132 int
 133 sfxge_nvram_ioctl(struct sfxge_softc *sc, sfxge_ioc_t *ip)
 134 {
 135         static const efx_nvram_type_t nvram_types[] = {
 136                 [SFXGE_NVRAM_TYPE_BOOTROM]  = EFX_NVRAM_BOOTROM,
 137                 [SFXGE_NVRAM_TYPE_BOOTROM_CFG]  = EFX_NVRAM_BOOTROM_CFG,
 138                 [SFXGE_NVRAM_TYPE_MC]  = EFX_NVRAM_MC_FIRMWARE,
 139                 [SFXGE_NVRAM_TYPE_MC_GOLDEN]  = EFX_NVRAM_MC_GOLDEN,
 140                 [SFXGE_NVRAM_TYPE_PHY]  = EFX_NVRAM_PHY,
 141                 [SFXGE_NVRAM_TYPE_NULL_PHY]  = EFX_NVRAM_NULLPHY,
 142                 [SFXGE_NVRAM_TYPE_FPGA]  = EFX_NVRAM_FPGA,
 143                 [SFXGE_NVRAM_TYPE_FCFW]  = EFX_NVRAM_FCFW,
 144                 [SFXGE_NVRAM_TYPE_CPLD]  = EFX_NVRAM_CPLD,
 145                 [SFXGE_NVRAM_TYPE_FPGA_BACKUP]  = EFX_NVRAM_FPGA_BACKUP,
 146                 [SFXGE_NVRAM_TYPE_DYNAMIC_CFG]  = EFX_NVRAM_DYNAMIC_CFG,
 147         };
 148
 149         efx_nic_t *enp = sc->enp;
 150         efx_nvram_type_t type;
 151         int rc = 0;
 152
 153         if (ip->u.nvram.type > SFXGE_NVRAM_TYPE_DYNAMIC_CFG)
 154                 return (EINVAL);
 155         type = nvram_types[ip->u.nvram.type];
 156         if (type == EFX_NVRAM_MC_GOLDEN &&
 157             (ip->u.nvram.op == SFXGE_NVRAM_OP_WRITE ||
 158              ip->u.nvram.op == SFXGE_NVRAM_OP_ERASE ||
 159              ip->u.nvram.op == SFXGE_NVRAM_OP_SET_VER))
 160                 return (EOPNOTSUPP);
 161
 162         switch (ip->u.nvram.op) {
 163         case SFXGE_NVRAM_OP_SIZE:
 164         {
 165                 size_t size;
 166
 167                 if (type == EFX_NVRAM_DYNAMIC_CFG && sc->family == EFX_FAMILY_SIENA) {
 168                         ip->u.nvram.size = sizeof(fake_dynamic_cfg_nvram);
 169                 } else {
 170                         if ((rc = efx_nvram_size(enp, type, &size)) != 0)
 171                                 return (rc);
 172                         ip->u.nvram.size = size;
 173                 }
 174                 break;
 175         }
 176         case SFXGE_NVRAM_OP_READ:
 177                 rc = sfxge_nvram_rw(sc, ip, type, B_FALSE);
 178                 break;
 179         case SFXGE_NVRAM_OP_WRITE:
 180                 rc = sfxge_nvram_rw(sc, ip, type, B_TRUE);
 181                 break;
 182         case SFXGE_NVRAM_OP_ERASE:
 183                 rc = sfxge_nvram_erase(sc, type);
 184                 break;
 185         case SFXGE_NVRAM_OP_GET_VER:
 186                 rc = efx_nvram_get_version(enp, type, &ip->u.nvram.subtype,
 187                                            &ip->u.nvram.version[0]);
 188                 break;
 189         case SFXGE_NVRAM_OP_SET_VER:
 190                 rc = efx_nvram_set_version(enp, type, &ip->u.nvram.version[0]);
 191                 break;
 192         default:
 193                 rc = EOPNOTSUPP;
 194                 break;
 195         }
 196
 197         return (rc);
 198 }