1 /*- 2 * Copyright (c) 2012-2016 Solarflare Communications Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 21 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 23 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 24 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * The views and conclusions contained in the software and documentation are 27 * those of the authors and should not be interpreted as representing official 28 * policies, either expressed or implied, of the FreeBSD Project. 29 */ 30 31 #include <sys/cdefs.h> 32 #include "efx.h" 33 #include "efx_impl.h" 34 35 #if EFSYS_OPT_SIENA && EFSYS_OPT_MCDI 36 37 #define SIENA_MCDI_PDU(_emip) \ 38 (((emip)->emi_port == 1) \ 39 ? MC_SMEM_P0_PDU_OFST >> 2 \ 40 : MC_SMEM_P1_PDU_OFST >> 2) 41 42 #define SIENA_MCDI_DOORBELL(_emip) \ 43 (((emip)->emi_port == 1) \ 44 ? MC_SMEM_P0_DOORBELL_OFST >> 2 \ 45 : MC_SMEM_P1_DOORBELL_OFST >> 2) 46 47 #define SIENA_MCDI_STATUS(_emip) \ 48 (((emip)->emi_port == 1) \ 49 ? MC_SMEM_P0_STATUS_OFST >> 2 \ 50 : MC_SMEM_P1_STATUS_OFST >> 2) 51 52 void 53 siena_mcdi_send_request( 54 __in efx_nic_t *enp, 55 __in_bcount(hdr_len) void *hdrp, 56 __in size_t hdr_len, 57 __in_bcount(sdu_len) void *sdup, 58 __in size_t sdu_len) 59 { 60 efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); 61 efx_dword_t dword; 62 unsigned int pdur; 63 unsigned int dbr; 64 unsigned int pos; 65 66 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA); 67 68 EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2); 69 pdur = SIENA_MCDI_PDU(emip); 70 dbr = SIENA_MCDI_DOORBELL(emip); 71 72 /* Write the header */ 73 EFSYS_ASSERT3U(hdr_len, ==, sizeof (efx_dword_t)); 74 dword = *(efx_dword_t *)hdrp; 75 EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, pdur, &dword, B_TRUE); 76 77 /* Write the payload */ 78 for (pos = 0; pos < sdu_len; pos += sizeof (efx_dword_t)) { 79 dword = *(efx_dword_t *)((uint8_t *)sdup + pos); 80 EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, 81 pdur + 1 + (pos >> 2), &dword, B_FALSE); 82 } 83 84 /* Ring the doorbell */ 85 EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xd004be11); 86 EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, dbr, &dword, B_FALSE); 87 } 88 89 efx_rc_t 90 siena_mcdi_poll_reboot( 91 __in efx_nic_t *enp) 92 { 93 #ifndef EFX_GRACEFUL_MC_REBOOT 94 /* 95 * This function is not being used properly. 96 * Until its callers are fixed, it should always return 0. 97 */ 98 _NOTE(ARGUNUSED(enp)) 99 return (0); 100 #else 101 efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); 102 unsigned int rebootr; 103 efx_dword_t dword; 104 uint32_t value; 105 106 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA); 107 EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2); 108 rebootr = SIENA_MCDI_STATUS(emip); 109 110 EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, rebootr, &dword, B_FALSE); 111 value = EFX_DWORD_FIELD(dword, EFX_DWORD_0); 112 113 if (value == 0) 114 return (0); 115 116 EFX_ZERO_DWORD(dword); 117 EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, rebootr, &dword, B_FALSE); 118 119 if (value == MC_STATUS_DWORD_ASSERT) 120 return (EINTR); 121 else 122 return (EIO); 123 #endif 124 } 125 126 extern __checkReturn boolean_t 127 siena_mcdi_poll_response( 128 __in efx_nic_t *enp) 129 { 130 efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); 131 efx_dword_t hdr; 132 unsigned int pdur; 133 134 EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2); 135 pdur = SIENA_MCDI_PDU(emip); 136 137 EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, pdur, &hdr, B_FALSE); 138 return (EFX_DWORD_FIELD(hdr, MCDI_HEADER_RESPONSE) ? B_TRUE : B_FALSE); 139 } 140 141 void 142 siena_mcdi_read_response( 143 __in efx_nic_t *enp, 144 __out_bcount(length) void *bufferp, 145 __in size_t offset, 146 __in size_t length) 147 { 148 efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); 149 unsigned int pdur; 150 unsigned int pos = 0; 151 efx_dword_t data; 152 size_t remaining = length; 153 154 EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2); 155 pdur = SIENA_MCDI_PDU(emip); 156 157 while (remaining > 0) { 158 size_t chunk = MIN(remaining, sizeof (data)); 159 160 EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, 161 pdur + ((offset + pos) >> 2), &data, B_FALSE); 162 memcpy((uint8_t *)bufferp + pos, &data, chunk); 163 pos += chunk; 164 remaining -= chunk; 165 } 166 } 167 168 __checkReturn efx_rc_t 169 siena_mcdi_init( 170 __in efx_nic_t *enp, 171 __in const efx_mcdi_transport_t *mtp) 172 { 173 efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); 174 efx_oword_t oword; 175 unsigned int portnum; 176 efx_rc_t rc; 177 178 _NOTE(ARGUNUSED(mtp)) 179 180 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA); 181 182 /* Determine the port number to use for MCDI */ 183 EFX_BAR_READO(enp, FR_AZ_CS_DEBUG_REG, &oword); 184 portnum = EFX_OWORD_FIELD(oword, FRF_CZ_CS_PORT_NUM); 185 186 if (portnum == 0) { 187 /* Presumably booted from ROM; only MCDI port 1 will work */ 188 emip->emi_port = 1; 189 } else if (portnum <= 2) { 190 emip->emi_port = portnum; 191 } else { 192 rc = EINVAL; 193 goto fail1; 194 } 195 196 /* Siena BootROM and firmware only support MCDIv1 */ 197 emip->emi_max_version = 1; 198 199 /* 200 * Wipe the atomic reboot status so subsequent MCDI requests succeed. 201 * BOOT_STATUS is preserved so eno_nic_probe() can boot out of the 202 * assertion handler. 203 */ 204 (void) siena_mcdi_poll_reboot(enp); 205 206 return (0); 207 208 fail1: 209 EFSYS_PROBE1(fail1, efx_rc_t, rc); 210 211 return (rc); 212 } 213 214 void 215 siena_mcdi_fini( 216 __in efx_nic_t *enp) 217 { 218 _NOTE(ARGUNUSED(enp)) 219 } 220 221 __checkReturn efx_rc_t 222 siena_mcdi_feature_supported( 223 __in efx_nic_t *enp, 224 __in efx_mcdi_feature_id_t id, 225 __out boolean_t *supportedp) 226 { 227 efx_rc_t rc; 228 229 EFSYS_ASSERT3U(enp->en_family, ==, EFX_FAMILY_SIENA); 230 231 switch (id) { 232 case EFX_MCDI_FEATURE_FW_UPDATE: 233 case EFX_MCDI_FEATURE_LINK_CONTROL: 234 case EFX_MCDI_FEATURE_MACADDR_CHANGE: 235 case EFX_MCDI_FEATURE_MAC_SPOOFING: 236 *supportedp = B_TRUE; 237 break; 238 default: 239 rc = ENOTSUP; 240 goto fail1; 241 } 242 243 return (0); 244 245 fail1: 246 EFSYS_PROBE1(fail1, efx_rc_t, rc); 247 248 return (rc); 249 } 250 251 /* Default timeout for MCDI command processing. */ 252 #define SIENA_MCDI_CMD_TIMEOUT_US (10 * 1000 * 1000) 253 254 void 255 siena_mcdi_get_timeout( 256 __in efx_nic_t *enp, 257 __in efx_mcdi_req_t *emrp, 258 __out uint32_t *timeoutp) 259 { 260 _NOTE(ARGUNUSED(enp, emrp)) 261 262 *timeoutp = SIENA_MCDI_CMD_TIMEOUT_US; 263 } 264 265 #endif /* EFSYS_OPT_SIENA && EFSYS_OPT_MCDI */ 266