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 __FBSDID("$FreeBSD$"); 33 34 #include "efx.h" 35 #include "efx_impl.h" 36 #if EFSYS_OPT_MON_MCDI 37 #include "mcdi_mon.h" 38 #endif 39 40 #if EFSYS_OPT_HUNTINGTON 41 42 #include "ef10_tlv_layout.h" 43 44 static __checkReturn efx_rc_t 45 hunt_nic_get_required_pcie_bandwidth( 46 __in efx_nic_t *enp, 47 __out uint32_t *bandwidth_mbpsp) 48 { 49 uint32_t port_modes; 50 uint32_t bandwidth; 51 efx_rc_t rc; 52 53 /* 54 * On Huntington, the firmware may not give us the current port mode, so 55 * we need to go by the set of available port modes and assume the most 56 * capable mode is in use. 57 */ 58 59 if ((rc = efx_mcdi_get_port_modes(enp, &port_modes, 60 NULL, NULL)) != 0) { 61 /* No port mode info available */ 62 bandwidth = 0; 63 goto out; 64 } 65 66 if (port_modes & (1U << TLV_PORT_MODE_40G_40G)) { 67 /* 68 * This needs the full PCIe bandwidth (and could use 69 * more) - roughly 64 Gbit/s for 8 lanes of Gen3. 70 */ 71 if ((rc = efx_nic_calculate_pcie_link_bandwidth(8, 72 EFX_PCIE_LINK_SPEED_GEN3, &bandwidth)) != 0) 73 goto fail1; 74 } else { 75 if (port_modes & (1U << TLV_PORT_MODE_40G)) { 76 bandwidth = 40000; 77 } else if (port_modes & (1U << TLV_PORT_MODE_10G_10G_10G_10G)) { 78 bandwidth = 4 * 10000; 79 } else { 80 /* Assume two 10G ports */ 81 bandwidth = 2 * 10000; 82 } 83 } 84 85 out: 86 *bandwidth_mbpsp = bandwidth; 87 88 return (0); 89 90 fail1: 91 EFSYS_PROBE1(fail1, efx_rc_t, rc); 92 93 return (rc); 94 } 95 96 __checkReturn efx_rc_t 97 hunt_board_cfg( 98 __in efx_nic_t *enp) 99 { 100 efx_nic_cfg_t *encp = &(enp->en_nic_cfg); 101 efx_port_t *epp = &(enp->en_port); 102 uint32_t flags; 103 uint32_t sysclk, dpcpu_clk; 104 uint32_t bandwidth; 105 efx_rc_t rc; 106 107 /* 108 * Enable firmware workarounds for hardware errata. 109 * Expected responses are: 110 * - 0 (zero): 111 * Success: workaround enabled or disabled as requested. 112 * - MC_CMD_ERR_ENOSYS (reported as ENOTSUP): 113 * Firmware does not support the MC_CMD_WORKAROUND request. 114 * (assume that the workaround is not supported). 115 * - MC_CMD_ERR_ENOENT (reported as ENOENT): 116 * Firmware does not support the requested workaround. 117 * - MC_CMD_ERR_EPERM (reported as EACCES): 118 * Unprivileged function cannot enable/disable workarounds. 119 * 120 * See efx_mcdi_request_errcode() for MCDI error translations. 121 */ 122 123 /* 124 * If the bug35388 workaround is enabled, then use an indirect access 125 * method to avoid unsafe EVQ writes. 126 */ 127 rc = efx_mcdi_set_workaround(enp, MC_CMD_WORKAROUND_BUG35388, B_TRUE, 128 NULL); 129 if ((rc == 0) || (rc == EACCES)) 130 encp->enc_bug35388_workaround = B_TRUE; 131 else if ((rc == ENOTSUP) || (rc == ENOENT)) 132 encp->enc_bug35388_workaround = B_FALSE; 133 else 134 goto fail1; 135 136 /* 137 * If the bug41750 workaround is enabled, then do not test interrupts, 138 * as the test will fail (seen with Greenport controllers). 139 */ 140 rc = efx_mcdi_set_workaround(enp, MC_CMD_WORKAROUND_BUG41750, B_TRUE, 141 NULL); 142 if (rc == 0) { 143 encp->enc_bug41750_workaround = B_TRUE; 144 } else if (rc == EACCES) { 145 /* Assume a controller with 40G ports needs the workaround. */ 146 if (epp->ep_default_adv_cap_mask & EFX_PHY_CAP_40000FDX) 147 encp->enc_bug41750_workaround = B_TRUE; 148 else 149 encp->enc_bug41750_workaround = B_FALSE; 150 } else if ((rc == ENOTSUP) || (rc == ENOENT)) { 151 encp->enc_bug41750_workaround = B_FALSE; 152 } else { 153 goto fail2; 154 } 155 if (EFX_PCI_FUNCTION_IS_VF(encp)) { 156 /* Interrupt testing does not work for VFs. See bug50084. */ 157 encp->enc_bug41750_workaround = B_TRUE; 158 } 159 160 /* 161 * If the bug26807 workaround is enabled, then firmware has enabled 162 * support for chained multicast filters. Firmware will reset (FLR) 163 * functions which have filters in the hardware filter table when the 164 * workaround is enabled/disabled. 165 * 166 * We must recheck if the workaround is enabled after inserting the 167 * first hardware filter, in case it has been changed since this check. 168 */ 169 rc = efx_mcdi_set_workaround(enp, MC_CMD_WORKAROUND_BUG26807, 170 B_TRUE, &flags); 171 if (rc == 0) { 172 encp->enc_bug26807_workaround = B_TRUE; 173 if (flags & (1 << MC_CMD_WORKAROUND_EXT_OUT_FLR_DONE_LBN)) { 174 /* 175 * Other functions had installed filters before the 176 * workaround was enabled, and they have been reset 177 * by firmware. 178 */ 179 EFSYS_PROBE(bug26807_workaround_flr_done); 180 /* FIXME: bump MC warm boot count ? */ 181 } 182 } else if (rc == EACCES) { 183 /* 184 * Unprivileged functions cannot enable the workaround in older 185 * firmware. 186 */ 187 encp->enc_bug26807_workaround = B_FALSE; 188 } else if ((rc == ENOTSUP) || (rc == ENOENT)) { 189 encp->enc_bug26807_workaround = B_FALSE; 190 } else { 191 goto fail3; 192 } 193 194 /* Get clock frequencies (in MHz). */ 195 if ((rc = efx_mcdi_get_clock(enp, &sysclk, &dpcpu_clk)) != 0) 196 goto fail4; 197 198 /* 199 * The Huntington timer quantum is 1536 sysclk cycles, documented for 200 * the EV_TMR_VAL field of EV_TIMER_TBL. Scale for MHz and ns units. 201 */ 202 encp->enc_evq_timer_quantum_ns = 1536000UL / sysclk; /* 1536 cycles */ 203 if (encp->enc_bug35388_workaround) { 204 encp->enc_evq_timer_max_us = (encp->enc_evq_timer_quantum_ns << 205 ERF_DD_EVQ_IND_TIMER_VAL_WIDTH) / 1000; 206 } else { 207 encp->enc_evq_timer_max_us = (encp->enc_evq_timer_quantum_ns << 208 FRF_CZ_TC_TIMER_VAL_WIDTH) / 1000; 209 } 210 211 encp->enc_bug61265_workaround = B_FALSE; /* Medford only */ 212 213 /* Checksums for TSO sends can be incorrect on Huntington. */ 214 encp->enc_bug61297_workaround = B_TRUE; 215 216 /* Alignment for receive packet DMA buffers */ 217 encp->enc_rx_buf_align_start = 1; 218 encp->enc_rx_buf_align_end = 64; /* RX DMA end padding */ 219 220 /* 221 * The workaround for bug35388 uses the top bit of transmit queue 222 * descriptor writes, preventing the use of 4096 descriptor TXQs. 223 */ 224 encp->enc_txq_max_ndescs = encp->enc_bug35388_workaround ? 2048 : 4096; 225 226 EFX_STATIC_ASSERT(HUNT_PIOBUF_NBUFS <= EF10_MAX_PIOBUF_NBUFS); 227 encp->enc_piobuf_limit = HUNT_PIOBUF_NBUFS; 228 encp->enc_piobuf_size = HUNT_PIOBUF_SIZE; 229 encp->enc_piobuf_min_alloc_size = HUNT_MIN_PIO_ALLOC_SIZE; 230 231 if ((rc = hunt_nic_get_required_pcie_bandwidth(enp, &bandwidth)) != 0) 232 goto fail5; 233 encp->enc_required_pcie_bandwidth_mbps = bandwidth; 234 235 /* All Huntington devices have a PCIe Gen3, 8 lane connector */ 236 encp->enc_max_pcie_link_gen = EFX_PCIE_LINK_SPEED_GEN3; 237 238 return (0); 239 240 fail5: 241 EFSYS_PROBE(fail5); 242 fail4: 243 EFSYS_PROBE(fail4); 244 fail3: 245 EFSYS_PROBE(fail3); 246 fail2: 247 EFSYS_PROBE(fail2); 248 fail1: 249 EFSYS_PROBE1(fail1, efx_rc_t, rc); 250 251 return (rc); 252 } 253 254 #endif /* EFSYS_OPT_HUNTINGTON */ 255