1 /* 2 * Copyright (c) 2012-2015 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 "efx.h" 32 #include "efx_impl.h" 33 34 #if EFSYS_OPT_SIENA && EFSYS_OPT_MCDI 35 36 #define SIENA_MCDI_PDU(_emip) \ 37 (((emip)->emi_port == 1) \ 38 ? MC_SMEM_P0_PDU_OFST >> 2 \ 39 : MC_SMEM_P1_PDU_OFST >> 2) 40 41 #define SIENA_MCDI_DOORBELL(_emip) \ 42 (((emip)->emi_port == 1) \ 43 ? MC_SMEM_P0_DOORBELL_OFST >> 2 \ 44 : MC_SMEM_P1_DOORBELL_OFST >> 2) 45 46 #define SIENA_MCDI_STATUS(_emip) \ 47 (((emip)->emi_port == 1) \ 48 ? MC_SMEM_P0_STATUS_OFST >> 2 \ 49 : MC_SMEM_P1_STATUS_OFST >> 2) 50 51 52 void 53 siena_mcdi_send_request( 54 __in efx_nic_t *enp, 55 __in void *hdrp, 56 __in size_t hdr_len, 57 __in 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 #if 1 94 /* 95 * XXX Bug 25922, bug 26099: This function is not being used 96 * properly. Until its callers are fixed, it should always 97 * return 0. 98 */ 99 _NOTE(ARGUNUSED(enp)) 100 return (0); 101 #else 102 efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); 103 unsigned int rebootr; 104 efx_dword_t dword; 105 uint32_t value; 106 107 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA); 108 EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2); 109 rebootr = SIENA_MCDI_STATUS(emip); 110 111 EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, rebootr, &dword, B_FALSE); 112 value = EFX_DWORD_FIELD(dword, EFX_DWORD_0); 113 114 if (value == 0) 115 return (0); 116 117 EFX_ZERO_DWORD(dword); 118 EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, rebootr, &dword, B_FALSE); 119 120 if (value == MC_STATUS_DWORD_ASSERT) 121 return (EINTR); 122 else 123 return (EIO); 124 #endif 125 } 126 127 extern __checkReturn boolean_t 128 siena_mcdi_poll_response( 129 __in efx_nic_t *enp) 130 { 131 efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); 132 efx_dword_t hdr; 133 unsigned int pdur; 134 135 EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2); 136 pdur = SIENA_MCDI_PDU(emip); 137 138 EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, pdur, &hdr, B_FALSE); 139 return (EFX_DWORD_FIELD(hdr, MCDI_HEADER_RESPONSE) ? B_TRUE : B_FALSE); 140 } 141 142 void 143 siena_mcdi_read_response( 144 __in efx_nic_t *enp, 145 __out_bcount(length) void *bufferp, 146 __in size_t offset, 147 __in size_t length) 148 { 149 efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); 150 unsigned int pdur; 151 unsigned int pos; 152 efx_dword_t data; 153 154 EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2); 155 pdur = SIENA_MCDI_PDU(emip); 156 157 for (pos = 0; pos < length; pos += sizeof (efx_dword_t)) { 158 EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, 159 pdur + ((offset + pos) >> 2), &data, B_FALSE); 160 (void) memcpy((uint8_t *)bufferp + pos, &data, 161 MIN(sizeof (data), length - pos)); 162 } 163 } 164 165 __checkReturn efx_rc_t 166 siena_mcdi_init( 167 __in efx_nic_t *enp, 168 __in const efx_mcdi_transport_t *mtp) 169 { 170 efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip); 171 efx_oword_t oword; 172 unsigned int portnum; 173 efx_rc_t rc; 174 175 _NOTE(ARGUNUSED(mtp)); 176 177 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_SIENA); 178 179 /* Determine the port number to use for MCDI */ 180 EFX_BAR_READO(enp, FR_AZ_CS_DEBUG_REG, &oword); 181 portnum = EFX_OWORD_FIELD(oword, FRF_CZ_CS_PORT_NUM); 182 183 if (portnum == 0) { 184 /* Presumably booted from ROM; only MCDI port 1 will work */ 185 emip->emi_port = 1; 186 } else if (portnum <= 2) { 187 emip->emi_port = portnum; 188 } else { 189 rc = EINVAL; 190 goto fail1; 191 } 192 193 /* Siena BootROM and firmware only support MCDIv1 */ 194 emip->emi_max_version = 1; 195 196 /* 197 * Wipe the atomic reboot status so subsequent MCDI requests succeed. 198 * BOOT_STATUS is preserved so eno_nic_probe() can boot out of the 199 * assertion handler. 200 */ 201 (void) siena_mcdi_poll_reboot(enp); 202 203 return (0); 204 205 fail1: 206 EFSYS_PROBE1(fail1, efx_rc_t, rc); 207 208 return (rc); 209 } 210 211 void 212 siena_mcdi_fini( 213 __in efx_nic_t *enp) 214 { 215 _NOTE(ARGUNUSED(enp)); 216 } 217 218 __checkReturn efx_rc_t 219 siena_mcdi_feature_supported( 220 __in efx_nic_t *enp, 221 __in efx_mcdi_feature_id_t id, 222 __out boolean_t *supportedp) 223 { 224 efx_rc_t rc; 225 226 EFSYS_ASSERT3U(enp->en_family, ==, EFX_FAMILY_SIENA); 227 228 switch (id) { 229 case EFX_MCDI_FEATURE_FW_UPDATE: 230 case EFX_MCDI_FEATURE_LINK_CONTROL: 231 case EFX_MCDI_FEATURE_MACADDR_CHANGE: 232 case EFX_MCDI_FEATURE_MAC_SPOOFING: 233 *supportedp = B_TRUE; 234 break; 235 default: 236 rc = ENOTSUP; 237 goto fail1; 238 } 239 240 return (0); 241 242 fail1: 243 EFSYS_PROBE1(fail1, efx_rc_t, rc); 244 245 return (rc); 246 } 247 248 #endif /* EFSYS_OPT_SIENA && EFSYS_OPT_MCDI */ 249