1/*- 2 * Copyright (c) 2016 Chelsio 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 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28#include "common.h" 29#include "t4_regs.h" 30#include "t4_regs_values.h" 31 32#undef msleep 33#define msleep(x) do { \ 34 if (cold) \ 35 DELAY((x) * 1000); \ 36 else \ 37 pause("t4hw", (x) * hz / 1000); \ 38} while (0) 39 40/* 41 * Wait for the device to become ready (signified by our "who am I" register 42 * returning a value other than all 1's). Return an error if it doesn't 43 * become ready ... 44 */ 45int t4vf_wait_dev_ready(struct adapter *adapter) 46{ 47 const u32 whoami = VF_PL_REG(A_PL_VF_WHOAMI); 48 const u32 notready1 = 0xffffffff; 49 const u32 notready2 = 0xeeeeeeee; 50 u32 val; 51 52 val = t4_read_reg(adapter, whoami); 53 if (val != notready1 && val != notready2) 54 return 0; 55 msleep(500); 56 val = t4_read_reg(adapter, whoami); 57 if (val != notready1 && val != notready2) 58 return 0; 59 else 60 return -EIO; 61} 62 63 64/** 65 * t4vf_fw_reset - issue a reset to FW 66 * @adapter: the adapter 67 * 68 * Issues a reset command to FW. For a Physical Function this would 69 * result in the Firmware reseting all of its state. For a Virtual 70 * Function this just resets the state associated with the VF. 71 */ 72int t4vf_fw_reset(struct adapter *adapter) 73{ 74 struct fw_reset_cmd cmd; 75 76 memset(&cmd, 0, sizeof(cmd)); 77 cmd.op_to_write = cpu_to_be32(V_FW_CMD_OP(FW_RESET_CMD) | 78 F_FW_CMD_WRITE); 79 cmd.retval_len16 = cpu_to_be32(V_FW_CMD_LEN16(FW_LEN16(cmd))); 80 return t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); 81} 82 83/** 84 * t4vf_get_sge_params - retrieve adapter Scatter gather Engine parameters 85 * @adapter: the adapter 86 * 87 * Retrieves various core SGE parameters in the form of hardware SGE 88 * register values. The caller is responsible for decoding these as 89 * needed. The SGE parameters are stored in @adapter->params.sge. 90 */ 91int t4vf_get_sge_params(struct adapter *adapter) 92{ 93 struct sge_params *sp = &adapter->params.sge; 94 u32 params[7], vals[7]; 95 u32 whoami; 96 unsigned int pf, s_hps; 97 int i, v; 98 99 params[0] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | 100 V_FW_PARAMS_PARAM_XYZ(A_SGE_CONTROL)); 101 params[1] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | 102 V_FW_PARAMS_PARAM_XYZ(A_SGE_HOST_PAGE_SIZE)); 103 params[2] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | 104 V_FW_PARAMS_PARAM_XYZ(A_SGE_TIMER_VALUE_0_AND_1)); 105 params[3] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | 106 V_FW_PARAMS_PARAM_XYZ(A_SGE_TIMER_VALUE_2_AND_3)); 107 params[4] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | 108 V_FW_PARAMS_PARAM_XYZ(A_SGE_TIMER_VALUE_4_AND_5)); 109 params[5] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | 110 V_FW_PARAMS_PARAM_XYZ(A_SGE_CONM_CTRL)); 111 params[6] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | 112 V_FW_PARAMS_PARAM_XYZ(A_SGE_INGRESS_RX_THRESHOLD)); 113 v = t4vf_query_params(adapter, 7, params, vals); 114 if (v != FW_SUCCESS) 115 return v; 116 117 sp->sge_control = vals[0]; 118 sp->counter_val[0] = G_THRESHOLD_0(vals[6]); 119 sp->counter_val[1] = G_THRESHOLD_1(vals[6]); 120 sp->counter_val[2] = G_THRESHOLD_2(vals[6]); 121 sp->counter_val[3] = G_THRESHOLD_3(vals[6]); 122 sp->timer_val[0] = core_ticks_to_us(adapter, G_TIMERVALUE0(vals[2])); 123 sp->timer_val[1] = core_ticks_to_us(adapter, G_TIMERVALUE1(vals[2])); 124 sp->timer_val[2] = core_ticks_to_us(adapter, G_TIMERVALUE2(vals[3])); 125 sp->timer_val[3] = core_ticks_to_us(adapter, G_TIMERVALUE3(vals[3])); 126 sp->timer_val[4] = core_ticks_to_us(adapter, G_TIMERVALUE4(vals[4])); 127 sp->timer_val[5] = core_ticks_to_us(adapter, G_TIMERVALUE5(vals[4])); 128 129 sp->fl_starve_threshold = G_EGRTHRESHOLD(vals[5]) * 2 + 1; 130 if (is_t4(adapter)) 131 sp->fl_starve_threshold2 = sp->fl_starve_threshold; 132 else if (is_t5(adapter)) 133 sp->fl_starve_threshold2 = G_EGRTHRESHOLDPACKING(vals[5]) * 2 + 1; 134 else 135 sp->fl_starve_threshold2 = G_T6_EGRTHRESHOLDPACKING(vals[5]) * 2 + 1; 136 137 /* 138 * We need the Queues/Page and Host Page Size for our VF. 139 * This is based on the PF from which we're instantiated. 140 */ 141 whoami = t4_read_reg(adapter, VF_PL_REG(A_PL_VF_WHOAMI)); 142 pf = G_SOURCEPF(whoami); 143 144 s_hps = (S_HOSTPAGESIZEPF0 + 145 (S_HOSTPAGESIZEPF1 - S_HOSTPAGESIZEPF0) * pf); 146 sp->page_shift = ((vals[1] >> s_hps) & M_HOSTPAGESIZEPF0) + 10; 147 148 for (i = 0; i < SGE_FLBUF_SIZES; i++) { 149 params[0] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | 150 V_FW_PARAMS_PARAM_XYZ(A_SGE_FL_BUFFER_SIZE0 + (4 * i))); 151 v = t4vf_query_params(adapter, 1, params, vals); 152 if (v != FW_SUCCESS) 153 return v; 154 155 sp->sge_fl_buffer_size[i] = vals[0]; 156 } 157 158 /* 159 * T4 uses a single control field to specify both the PCIe Padding and 160 * Packing Boundary. T5 introduced the ability to specify these 161 * separately with the Padding Boundary in SGE_CONTROL and and Packing 162 * Boundary in SGE_CONTROL2. So for T5 and later we need to grab 163 * SGE_CONTROL in order to determine how ingress packet data will be 164 * laid out in Packed Buffer Mode. Unfortunately, older versions of 165 * the firmware won't let us retrieve SGE_CONTROL2 so if we get a 166 * failure grabbing it we throw an error since we can't figure out the 167 * right value. 168 */ 169 sp->spg_len = sp->sge_control & F_EGRSTATUSPAGESIZE ? 128 : 64; 170 sp->fl_pktshift = G_PKTSHIFT(sp->sge_control); 171 if (chip_id(adapter) <= CHELSIO_T5) { 172 sp->pad_boundary = 1 << (G_INGPADBOUNDARY(sp->sge_control) + 173 X_INGPADBOUNDARY_SHIFT); 174 } else { 175 sp->pad_boundary = 1 << (G_INGPADBOUNDARY(sp->sge_control) + 176 X_T6_INGPADBOUNDARY_SHIFT); 177 } 178 if (is_t4(adapter)) 179 sp->pack_boundary = sp->pad_boundary; 180 else { 181 params[0] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | 182 V_FW_PARAMS_PARAM_XYZ(A_SGE_CONTROL2)); 183 v = t4vf_query_params(adapter, 1, params, vals); 184 if (v != FW_SUCCESS) { 185 CH_ERR(adapter, "Unable to get SGE Control2; " 186 "probably old firmware.\n"); 187 return v; 188 } 189 if (G_INGPACKBOUNDARY(vals[0]) == 0) 190 sp->pack_boundary = 16; 191 else 192 sp->pack_boundary = 1 << (G_INGPACKBOUNDARY(vals[0]) + 193 5); 194 } 195 196 /* 197 * For T5 and later we want to use the new BAR2 Doorbells. 198 * Unfortunately, older firmware didn't allow the this register to be 199 * read. 200 */ 201 if (!is_t4(adapter)) { 202 unsigned int s_qpp; 203 204 params[0] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | 205 V_FW_PARAMS_PARAM_XYZ(A_SGE_EGRESS_QUEUES_PER_PAGE_VF)); 206 params[1] = (V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_REG) | 207 V_FW_PARAMS_PARAM_XYZ(A_SGE_INGRESS_QUEUES_PER_PAGE_VF)); 208 v = t4vf_query_params(adapter, 2, params, vals); 209 if (v != FW_SUCCESS) { 210 CH_WARN(adapter, "Unable to get VF SGE Queues/Page; " 211 "probably old firmware.\n"); 212 return v; 213 } 214 215 s_qpp = (S_QUEUESPERPAGEPF0 + 216 (S_QUEUESPERPAGEPF1 - S_QUEUESPERPAGEPF0) * pf); 217 sp->eq_s_qpp = ((vals[0] >> s_qpp) & M_QUEUESPERPAGEPF0); 218 sp->iq_s_qpp = ((vals[1] >> s_qpp) & M_QUEUESPERPAGEPF0); 219 } 220 221 return 0; 222} 223 224/** 225 * t4vf_get_rss_glb_config - retrieve adapter RSS Global Configuration 226 * @adapter: the adapter 227 * 228 * Retrieves global RSS mode and parameters with which we have to live 229 * and stores them in the @adapter's RSS parameters. 230 */ 231int t4vf_get_rss_glb_config(struct adapter *adapter) 232{ 233 struct rss_params *rss = &adapter->params.rss; 234 struct fw_rss_glb_config_cmd cmd, rpl; 235 int v; 236 237 /* 238 * Execute an RSS Global Configuration read command to retrieve 239 * our RSS configuration. 240 */ 241 memset(&cmd, 0, sizeof(cmd)); 242 cmd.op_to_write = cpu_to_be32(V_FW_CMD_OP(FW_RSS_GLB_CONFIG_CMD) | 243 F_FW_CMD_REQUEST | 244 F_FW_CMD_READ); 245 cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); 246 v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); 247 if (v != FW_SUCCESS) 248 return v; 249 250 /* 251 * Transate the big-endian RSS Global Configuration into our 252 * cpu-endian format based on the RSS mode. We also do first level 253 * filtering at this point to weed out modes which don't support 254 * VF Drivers ... 255 */ 256 rss->mode = G_FW_RSS_GLB_CONFIG_CMD_MODE( 257 be32_to_cpu(rpl.u.manual.mode_pkd)); 258 switch (rss->mode) { 259 case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: { 260 u32 word = be32_to_cpu( 261 rpl.u.basicvirtual.synmapen_to_hashtoeplitz); 262 263 rss->u.basicvirtual.synmapen = 264 ((word & F_FW_RSS_GLB_CONFIG_CMD_SYNMAPEN) != 0); 265 rss->u.basicvirtual.syn4tupenipv6 = 266 ((word & F_FW_RSS_GLB_CONFIG_CMD_SYN4TUPENIPV6) != 0); 267 rss->u.basicvirtual.syn2tupenipv6 = 268 ((word & F_FW_RSS_GLB_CONFIG_CMD_SYN2TUPENIPV6) != 0); 269 rss->u.basicvirtual.syn4tupenipv4 = 270 ((word & F_FW_RSS_GLB_CONFIG_CMD_SYN4TUPENIPV4) != 0); 271 rss->u.basicvirtual.syn2tupenipv4 = 272 ((word & F_FW_RSS_GLB_CONFIG_CMD_SYN2TUPENIPV4) != 0); 273 274 rss->u.basicvirtual.ofdmapen = 275 ((word & F_FW_RSS_GLB_CONFIG_CMD_OFDMAPEN) != 0); 276 277 rss->u.basicvirtual.tnlmapen = 278 ((word & F_FW_RSS_GLB_CONFIG_CMD_TNLMAPEN) != 0); 279 rss->u.basicvirtual.tnlalllookup = 280 ((word & F_FW_RSS_GLB_CONFIG_CMD_TNLALLLKP) != 0); 281 282 rss->u.basicvirtual.hashtoeplitz = 283 ((word & F_FW_RSS_GLB_CONFIG_CMD_HASHTOEPLITZ) != 0); 284 285 /* we need at least Tunnel Map Enable to be set */ 286 if (!rss->u.basicvirtual.tnlmapen) 287 return -EINVAL; 288 break; 289 } 290 291 default: 292 /* all unknown/unsupported RSS modes result in an error */ 293 return -EINVAL; 294 } 295 296 return 0; 297} 298 299/** 300 * t4vf_get_vfres - retrieve VF resource limits 301 * @adapter: the adapter 302 * 303 * Retrieves configured resource limits and capabilities for a virtual 304 * function. The results are stored in @adapter->vfres. 305 */ 306int t4vf_get_vfres(struct adapter *adapter) 307{ 308 struct vf_resources *vfres = &adapter->params.vfres; 309 struct fw_pfvf_cmd cmd, rpl; 310 int v; 311 u32 word; 312 313 /* 314 * Execute PFVF Read command to get VF resource limits; bail out early 315 * with error on command failure. 316 */ 317 memset(&cmd, 0, sizeof(cmd)); 318 cmd.op_to_vfn = cpu_to_be32(V_FW_CMD_OP(FW_PFVF_CMD) | 319 F_FW_CMD_REQUEST | 320 F_FW_CMD_READ); 321 cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd)); 322 v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); 323 if (v != FW_SUCCESS) 324 return v; 325 326 /* 327 * Extract VF resource limits and return success. 328 */ 329 word = be32_to_cpu(rpl.niqflint_niq); 330 vfres->niqflint = G_FW_PFVF_CMD_NIQFLINT(word); 331 vfres->niq = G_FW_PFVF_CMD_NIQ(word); 332 333 word = be32_to_cpu(rpl.type_to_neq); 334 vfres->neq = G_FW_PFVF_CMD_NEQ(word); 335 vfres->pmask = G_FW_PFVF_CMD_PMASK(word); 336 337 word = be32_to_cpu(rpl.tc_to_nexactf); 338 vfres->tc = G_FW_PFVF_CMD_TC(word); 339 vfres->nvi = G_FW_PFVF_CMD_NVI(word); 340 vfres->nexactf = G_FW_PFVF_CMD_NEXACTF(word); 341 342 word = be32_to_cpu(rpl.r_caps_to_nethctrl); 343 vfres->r_caps = G_FW_PFVF_CMD_R_CAPS(word); 344 vfres->wx_caps = G_FW_PFVF_CMD_WX_CAPS(word); 345 vfres->nethctrl = G_FW_PFVF_CMD_NETHCTRL(word); 346 347 return 0; 348} 349 350/** 351 */ 352int t4vf_prep_adapter(struct adapter *adapter) 353{ 354 int err; 355 356 /* 357 * Wait for the device to become ready before proceeding ... 358 */ 359 err = t4vf_wait_dev_ready(adapter); 360 if (err) 361 return err; 362 363 adapter->params.chipid = pci_get_device(adapter->dev) >> 12; 364 if (adapter->params.chipid >= 0xa) { 365 adapter->params.chipid -= (0xa - 0x4); 366 adapter->params.fpga = 1; 367 } 368 369 /* 370 * Default port and clock for debugging in case we can't reach 371 * firmware. 372 */ 373 adapter->params.nports = 1; 374 adapter->params.vfres.pmask = 1; 375 adapter->params.vpd.cclk = 50000; 376 377 adapter->chip_params = t4_get_chip_params(chip_id(adapter)); 378 if (adapter->chip_params == NULL) 379 return -EINVAL; 380 381 return 0; 382} 383 384/* 385 * t4vf_get_vf_mac - Get the MAC address to be set to the VI of this VF. 386 * @adapter: The adapter 387 * @port: The port associated with vf 388 * @naddr: the number of ACL MAC addresses returned in addr 389 * @addr: Placeholder for MAC addresses 390 * 391 * Find the MAC address to be set to the VF's VI. The requested MAC address 392 * is from the host OS via callback in the PF driver. 393 */ 394int t4vf_get_vf_mac(struct adapter *adapter, unsigned int port, 395 unsigned int *naddr, u8 *addr) 396{ 397 struct fw_acl_mac_cmd cmd; 398 int ret; 399 400 memset(&cmd, 0, sizeof(cmd)); 401 cmd.op_to_vfn = cpu_to_be32(V_FW_CMD_OP(FW_ACL_MAC_CMD) | 402 F_FW_CMD_REQUEST | 403 F_FW_CMD_READ); 404 cmd.en_to_len16 = cpu_to_be32((unsigned int)FW_LEN16(cmd)); 405 ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &cmd); 406 if (ret) 407 return ret; 408 409 if (cmd.nmac < *naddr) 410 *naddr = cmd.nmac; 411 412 switch (port) { 413 case 3: 414 memcpy(addr, cmd.macaddr3, sizeof(cmd.macaddr3)); 415 break; 416 case 2: 417 memcpy(addr, cmd.macaddr2, sizeof(cmd.macaddr2)); 418 break; 419 case 1: 420 memcpy(addr, cmd.macaddr1, sizeof(cmd.macaddr1)); 421 break; 422 case 0: 423 memcpy(addr, cmd.macaddr0, sizeof(cmd.macaddr0)); 424 break; 425 } 426 427 return ret; 428} 429