1// SPDX-License-Identifier: GPL-2.0 2/* Copyright(c) 2013 - 2019 Intel Corporation. */ 3 4#include <linux/bitfield.h> 5#include "fm10k_vf.h" 6 7/** 8 * fm10k_stop_hw_vf - Stop Tx/Rx units 9 * @hw: pointer to hardware structure 10 * 11 **/ 12static s32 fm10k_stop_hw_vf(struct fm10k_hw *hw) 13{ 14 u8 *perm_addr = hw->mac.perm_addr; 15 u32 bal = 0, bah = 0, tdlen; 16 s32 err; 17 u16 i; 18 19 /* we need to disable the queues before taking further steps */ 20 err = fm10k_stop_hw_generic(hw); 21 if (err && err != FM10K_ERR_REQUESTS_PENDING) 22 return err; 23 24 /* If permanent address is set then we need to restore it */ 25 if (is_valid_ether_addr(perm_addr)) { 26 bal = (((u32)perm_addr[3]) << 24) | 27 (((u32)perm_addr[4]) << 16) | 28 (((u32)perm_addr[5]) << 8); 29 bah = (((u32)0xFF) << 24) | 30 (((u32)perm_addr[0]) << 16) | 31 (((u32)perm_addr[1]) << 8) | 32 ((u32)perm_addr[2]); 33 } 34 35 /* restore default itr_scale for next VF initialization */ 36 tdlen = hw->mac.itr_scale << FM10K_TDLEN_ITR_SCALE_SHIFT; 37 38 /* The queues have already been disabled so we just need to 39 * update their base address registers 40 */ 41 for (i = 0; i < hw->mac.max_queues; i++) { 42 fm10k_write_reg(hw, FM10K_TDBAL(i), bal); 43 fm10k_write_reg(hw, FM10K_TDBAH(i), bah); 44 fm10k_write_reg(hw, FM10K_RDBAL(i), bal); 45 fm10k_write_reg(hw, FM10K_RDBAH(i), bah); 46 /* Restore ITR scale in software-defined mechanism in TDLEN 47 * for next VF initialization. See definition of 48 * FM10K_TDLEN_ITR_SCALE_SHIFT for more details on the use of 49 * TDLEN here. 50 */ 51 fm10k_write_reg(hw, FM10K_TDLEN(i), tdlen); 52 } 53 54 return err; 55} 56 57/** 58 * fm10k_reset_hw_vf - VF hardware reset 59 * @hw: pointer to hardware structure 60 * 61 * This function should return the hardware to a state similar to the 62 * one it is in after just being initialized. 63 **/ 64static s32 fm10k_reset_hw_vf(struct fm10k_hw *hw) 65{ 66 s32 err; 67 68 /* shut down queues we own and reset DMA configuration */ 69 err = fm10k_stop_hw_vf(hw); 70 if (err == FM10K_ERR_REQUESTS_PENDING) 71 hw->mac.reset_while_pending++; 72 else if (err) 73 return err; 74 75 /* Inititate VF reset */ 76 fm10k_write_reg(hw, FM10K_VFCTRL, FM10K_VFCTRL_RST); 77 78 /* Flush write and allow 100us for reset to complete */ 79 fm10k_write_flush(hw); 80 udelay(FM10K_RESET_TIMEOUT); 81 82 /* Clear reset bit and verify it was cleared */ 83 fm10k_write_reg(hw, FM10K_VFCTRL, 0); 84 if (fm10k_read_reg(hw, FM10K_VFCTRL) & FM10K_VFCTRL_RST) 85 return FM10K_ERR_RESET_FAILED; 86 87 return 0; 88} 89 90/** 91 * fm10k_init_hw_vf - VF hardware initialization 92 * @hw: pointer to hardware structure 93 * 94 **/ 95static s32 fm10k_init_hw_vf(struct fm10k_hw *hw) 96{ 97 u32 tqdloc, tqdloc0 = ~fm10k_read_reg(hw, FM10K_TQDLOC(0)); 98 s32 err; 99 u16 i; 100 101 /* verify we have at least 1 queue */ 102 if (!~fm10k_read_reg(hw, FM10K_TXQCTL(0)) || 103 !~fm10k_read_reg(hw, FM10K_RXQCTL(0))) { 104 err = FM10K_ERR_NO_RESOURCES; 105 goto reset_max_queues; 106 } 107 108 /* determine how many queues we have */ 109 for (i = 1; tqdloc0 && (i < FM10K_MAX_QUEUES_POOL); i++) { 110 /* verify the Descriptor cache offsets are increasing */ 111 tqdloc = ~fm10k_read_reg(hw, FM10K_TQDLOC(i)); 112 if (!tqdloc || (tqdloc == tqdloc0)) 113 break; 114 115 /* check to verify the PF doesn't own any of our queues */ 116 if (!~fm10k_read_reg(hw, FM10K_TXQCTL(i)) || 117 !~fm10k_read_reg(hw, FM10K_RXQCTL(i))) 118 break; 119 } 120 121 /* shut down queues we own and reset DMA configuration */ 122 err = fm10k_disable_queues_generic(hw, i); 123 if (err) 124 goto reset_max_queues; 125 126 /* record maximum queue count */ 127 hw->mac.max_queues = i; 128 129 /* fetch default VLAN and ITR scale */ 130 hw->mac.default_vid = FIELD_GET(FM10K_TXQCTL_VID_MASK, 131 fm10k_read_reg(hw, FM10K_TXQCTL(0))); 132 /* Read the ITR scale from TDLEN. See the definition of 133 * FM10K_TDLEN_ITR_SCALE_SHIFT for more information about how TDLEN is 134 * used here. 135 */ 136 hw->mac.itr_scale = FIELD_GET(FM10K_TDLEN_ITR_SCALE_MASK, 137 fm10k_read_reg(hw, FM10K_TDLEN(0))); 138 139 return 0; 140 141reset_max_queues: 142 hw->mac.max_queues = 0; 143 144 return err; 145} 146 147/* This structure defines the attibutes to be parsed below */ 148const struct fm10k_tlv_attr fm10k_mac_vlan_msg_attr[] = { 149 FM10K_TLV_ATTR_U32(FM10K_MAC_VLAN_MSG_VLAN), 150 FM10K_TLV_ATTR_BOOL(FM10K_MAC_VLAN_MSG_SET), 151 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MAC), 152 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_DEFAULT_MAC), 153 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MULTICAST), 154 FM10K_TLV_ATTR_LAST 155}; 156 157/** 158 * fm10k_update_vlan_vf - Update status of VLAN ID in VLAN filter table 159 * @hw: pointer to hardware structure 160 * @vid: VLAN ID to add to table 161 * @vsi: Reserved, should always be 0 162 * @set: Indicates if this is a set or clear operation 163 * 164 * This function adds or removes the corresponding VLAN ID from the VLAN 165 * filter table for this VF. 166 **/ 167static s32 fm10k_update_vlan_vf(struct fm10k_hw *hw, u32 vid, u8 vsi, bool set) 168{ 169 struct fm10k_mbx_info *mbx = &hw->mbx; 170 u32 msg[4]; 171 172 /* verify the index is not set */ 173 if (vsi) 174 return FM10K_ERR_PARAM; 175 176 /* clever trick to verify reserved bits in both vid and length */ 177 if ((vid << 16 | vid) >> 28) 178 return FM10K_ERR_PARAM; 179 180 /* encode set bit into the VLAN ID */ 181 if (!set) 182 vid |= FM10K_VLAN_CLEAR; 183 184 /* generate VLAN request */ 185 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN); 186 fm10k_tlv_attr_put_u32(msg, FM10K_MAC_VLAN_MSG_VLAN, vid); 187 188 /* load onto outgoing mailbox */ 189 return mbx->ops.enqueue_tx(hw, mbx, msg); 190} 191 192/** 193 * fm10k_msg_mac_vlan_vf - Read device MAC address from mailbox message 194 * @hw: pointer to the HW structure 195 * @results: Attributes for message 196 * @mbx: unused mailbox data 197 * 198 * This function should determine the MAC address for the VF 199 **/ 200s32 fm10k_msg_mac_vlan_vf(struct fm10k_hw *hw, u32 **results, 201 struct fm10k_mbx_info __always_unused *mbx) 202{ 203 u8 perm_addr[ETH_ALEN]; 204 u16 vid; 205 s32 err; 206 207 /* record MAC address requested */ 208 err = fm10k_tlv_attr_get_mac_vlan( 209 results[FM10K_MAC_VLAN_MSG_DEFAULT_MAC], 210 perm_addr, &vid); 211 if (err) 212 return err; 213 214 ether_addr_copy(hw->mac.perm_addr, perm_addr); 215 hw->mac.default_vid = vid & (FM10K_VLAN_TABLE_VID_MAX - 1); 216 hw->mac.vlan_override = !!(vid & FM10K_VLAN_OVERRIDE); 217 218 return 0; 219} 220 221/** 222 * fm10k_read_mac_addr_vf - Read device MAC address 223 * @hw: pointer to the HW structure 224 * 225 * This function should determine the MAC address for the VF 226 **/ 227static s32 fm10k_read_mac_addr_vf(struct fm10k_hw *hw) 228{ 229 u8 perm_addr[ETH_ALEN]; 230 u32 base_addr; 231 232 base_addr = fm10k_read_reg(hw, FM10K_TDBAL(0)); 233 234 /* last byte should be 0 */ 235 if (base_addr << 24) 236 return FM10K_ERR_INVALID_MAC_ADDR; 237 238 perm_addr[3] = (u8)(base_addr >> 24); 239 perm_addr[4] = (u8)(base_addr >> 16); 240 perm_addr[5] = (u8)(base_addr >> 8); 241 242 base_addr = fm10k_read_reg(hw, FM10K_TDBAH(0)); 243 244 /* first byte should be all 1's */ 245 if ((~base_addr) >> 24) 246 return FM10K_ERR_INVALID_MAC_ADDR; 247 248 perm_addr[0] = (u8)(base_addr >> 16); 249 perm_addr[1] = (u8)(base_addr >> 8); 250 perm_addr[2] = (u8)(base_addr); 251 252 ether_addr_copy(hw->mac.perm_addr, perm_addr); 253 ether_addr_copy(hw->mac.addr, perm_addr); 254 255 return 0; 256} 257 258/** 259 * fm10k_update_uc_addr_vf - Update device unicast addresses 260 * @hw: pointer to the HW structure 261 * @glort: unused 262 * @mac: MAC address to add/remove from table 263 * @vid: VLAN ID to add/remove from table 264 * @add: Indicates if this is an add or remove operation 265 * @flags: flags field to indicate add and secure - unused 266 * 267 * This function is used to add or remove unicast MAC addresses for 268 * the VF. 269 **/ 270static s32 fm10k_update_uc_addr_vf(struct fm10k_hw *hw, 271 u16 __always_unused glort, 272 const u8 *mac, u16 vid, bool add, 273 u8 __always_unused flags) 274{ 275 struct fm10k_mbx_info *mbx = &hw->mbx; 276 u32 msg[7]; 277 278 /* verify VLAN ID is valid */ 279 if (vid >= FM10K_VLAN_TABLE_VID_MAX) 280 return FM10K_ERR_PARAM; 281 282 /* verify MAC address is valid */ 283 if (!is_valid_ether_addr(mac)) 284 return FM10K_ERR_PARAM; 285 286 /* verify we are not locked down on the MAC address */ 287 if (is_valid_ether_addr(hw->mac.perm_addr) && 288 !ether_addr_equal(hw->mac.perm_addr, mac)) 289 return FM10K_ERR_PARAM; 290 291 /* add bit to notify us if this is a set or clear operation */ 292 if (!add) 293 vid |= FM10K_VLAN_CLEAR; 294 295 /* generate VLAN request */ 296 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN); 297 fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MAC, mac, vid); 298 299 /* load onto outgoing mailbox */ 300 return mbx->ops.enqueue_tx(hw, mbx, msg); 301} 302 303/** 304 * fm10k_update_mc_addr_vf - Update device multicast addresses 305 * @hw: pointer to the HW structure 306 * @glort: unused 307 * @mac: MAC address to add/remove from table 308 * @vid: VLAN ID to add/remove from table 309 * @add: Indicates if this is an add or remove operation 310 * 311 * This function is used to add or remove multicast MAC addresses for 312 * the VF. 313 **/ 314static s32 fm10k_update_mc_addr_vf(struct fm10k_hw *hw, 315 u16 __always_unused glort, 316 const u8 *mac, u16 vid, bool add) 317{ 318 struct fm10k_mbx_info *mbx = &hw->mbx; 319 u32 msg[7]; 320 321 /* verify VLAN ID is valid */ 322 if (vid >= FM10K_VLAN_TABLE_VID_MAX) 323 return FM10K_ERR_PARAM; 324 325 /* verify multicast address is valid */ 326 if (!is_multicast_ether_addr(mac)) 327 return FM10K_ERR_PARAM; 328 329 /* add bit to notify us if this is a set or clear operation */ 330 if (!add) 331 vid |= FM10K_VLAN_CLEAR; 332 333 /* generate VLAN request */ 334 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN); 335 fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MULTICAST, 336 mac, vid); 337 338 /* load onto outgoing mailbox */ 339 return mbx->ops.enqueue_tx(hw, mbx, msg); 340} 341 342/** 343 * fm10k_update_int_moderator_vf - Request update of interrupt moderator list 344 * @hw: pointer to hardware structure 345 * 346 * This function will issue a request to the PF to rescan our MSI-X table 347 * and to update the interrupt moderator linked list. 348 **/ 349static void fm10k_update_int_moderator_vf(struct fm10k_hw *hw) 350{ 351 struct fm10k_mbx_info *mbx = &hw->mbx; 352 u32 msg[1]; 353 354 /* generate MSI-X request */ 355 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MSIX); 356 357 /* load onto outgoing mailbox */ 358 mbx->ops.enqueue_tx(hw, mbx, msg); 359} 360 361/* This structure defines the attibutes to be parsed below */ 362const struct fm10k_tlv_attr fm10k_lport_state_msg_attr[] = { 363 FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_DISABLE), 364 FM10K_TLV_ATTR_U8(FM10K_LPORT_STATE_MSG_XCAST_MODE), 365 FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_READY), 366 FM10K_TLV_ATTR_LAST 367}; 368 369/** 370 * fm10k_msg_lport_state_vf - Message handler for lport_state message from PF 371 * @hw: Pointer to hardware structure 372 * @results: pointer array containing parsed data 373 * @mbx: Pointer to mailbox information structure 374 * 375 * This handler is meant to capture the indication from the PF that we 376 * are ready to bring up the interface. 377 **/ 378s32 fm10k_msg_lport_state_vf(struct fm10k_hw *hw, u32 **results, 379 struct fm10k_mbx_info __always_unused *mbx) 380{ 381 hw->mac.dglort_map = !results[FM10K_LPORT_STATE_MSG_READY] ? 382 FM10K_DGLORTMAP_NONE : FM10K_DGLORTMAP_ZERO; 383 384 return 0; 385} 386 387/** 388 * fm10k_update_lport_state_vf - Update device state in lower device 389 * @hw: pointer to the HW structure 390 * @glort: unused 391 * @count: number of logical ports to enable - unused (always 1) 392 * @enable: boolean value indicating if this is an enable or disable request 393 * 394 * Notify the lower device of a state change. If the lower device is 395 * enabled we can add filters, if it is disabled all filters for this 396 * logical port are flushed. 397 **/ 398static s32 fm10k_update_lport_state_vf(struct fm10k_hw *hw, 399 u16 __always_unused glort, 400 u16 __always_unused count, bool enable) 401{ 402 struct fm10k_mbx_info *mbx = &hw->mbx; 403 u32 msg[2]; 404 405 /* reset glort mask 0 as we have to wait to be enabled */ 406 hw->mac.dglort_map = FM10K_DGLORTMAP_NONE; 407 408 /* generate port state request */ 409 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE); 410 if (!enable) 411 fm10k_tlv_attr_put_bool(msg, FM10K_LPORT_STATE_MSG_DISABLE); 412 413 /* load onto outgoing mailbox */ 414 return mbx->ops.enqueue_tx(hw, mbx, msg); 415} 416 417/** 418 * fm10k_update_xcast_mode_vf - Request update of multicast mode 419 * @hw: pointer to hardware structure 420 * @glort: unused 421 * @mode: integer value indicating mode being requested 422 * 423 * This function will attempt to request a higher mode for the port 424 * so that it can enable either multicast, multicast promiscuous, or 425 * promiscuous mode of operation. 426 **/ 427static s32 fm10k_update_xcast_mode_vf(struct fm10k_hw *hw, 428 u16 __always_unused glort, u8 mode) 429{ 430 struct fm10k_mbx_info *mbx = &hw->mbx; 431 u32 msg[3]; 432 433 if (mode > FM10K_XCAST_MODE_NONE) 434 return FM10K_ERR_PARAM; 435 436 /* generate message requesting to change xcast mode */ 437 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE); 438 fm10k_tlv_attr_put_u8(msg, FM10K_LPORT_STATE_MSG_XCAST_MODE, mode); 439 440 /* load onto outgoing mailbox */ 441 return mbx->ops.enqueue_tx(hw, mbx, msg); 442} 443 444/** 445 * fm10k_update_hw_stats_vf - Updates hardware related statistics of VF 446 * @hw: pointer to hardware structure 447 * @stats: pointer to statistics structure 448 * 449 * This function collects and aggregates per queue hardware statistics. 450 **/ 451static void fm10k_update_hw_stats_vf(struct fm10k_hw *hw, 452 struct fm10k_hw_stats *stats) 453{ 454 fm10k_update_hw_stats_q(hw, stats->q, 0, hw->mac.max_queues); 455} 456 457/** 458 * fm10k_rebind_hw_stats_vf - Resets base for hardware statistics of VF 459 * @hw: pointer to hardware structure 460 * @stats: pointer to the stats structure to update 461 * 462 * This function resets the base for queue hardware statistics. 463 **/ 464static void fm10k_rebind_hw_stats_vf(struct fm10k_hw *hw, 465 struct fm10k_hw_stats *stats) 466{ 467 /* Unbind Queue Statistics */ 468 fm10k_unbind_hw_stats_q(stats->q, 0, hw->mac.max_queues); 469 470 /* Reinitialize bases for all stats */ 471 fm10k_update_hw_stats_vf(hw, stats); 472} 473 474/** 475 * fm10k_configure_dglort_map_vf - Configures GLORT entry and queues 476 * @hw: pointer to hardware structure 477 * @dglort: pointer to dglort configuration structure 478 * 479 * Reads the configuration structure contained in dglort_cfg and uses 480 * that information to then populate a DGLORTMAP/DEC entry and the queues 481 * to which it has been assigned. 482 **/ 483static s32 fm10k_configure_dglort_map_vf(struct fm10k_hw __always_unused *hw, 484 struct fm10k_dglort_cfg *dglort) 485{ 486 /* verify the dglort pointer */ 487 if (!dglort) 488 return FM10K_ERR_PARAM; 489 490 /* stub for now until we determine correct message for this */ 491 492 return 0; 493} 494 495static const struct fm10k_msg_data fm10k_msg_data_vf[] = { 496 FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test), 497 FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_msg_mac_vlan_vf), 498 FM10K_VF_MSG_LPORT_STATE_HANDLER(fm10k_msg_lport_state_vf), 499 FM10K_TLV_MSG_ERROR_HANDLER(fm10k_tlv_msg_error), 500}; 501 502static const struct fm10k_mac_ops mac_ops_vf = { 503 .get_bus_info = fm10k_get_bus_info_generic, 504 .reset_hw = fm10k_reset_hw_vf, 505 .init_hw = fm10k_init_hw_vf, 506 .start_hw = fm10k_start_hw_generic, 507 .stop_hw = fm10k_stop_hw_vf, 508 .update_vlan = fm10k_update_vlan_vf, 509 .read_mac_addr = fm10k_read_mac_addr_vf, 510 .update_uc_addr = fm10k_update_uc_addr_vf, 511 .update_mc_addr = fm10k_update_mc_addr_vf, 512 .update_xcast_mode = fm10k_update_xcast_mode_vf, 513 .update_int_moderator = fm10k_update_int_moderator_vf, 514 .update_lport_state = fm10k_update_lport_state_vf, 515 .update_hw_stats = fm10k_update_hw_stats_vf, 516 .rebind_hw_stats = fm10k_rebind_hw_stats_vf, 517 .configure_dglort_map = fm10k_configure_dglort_map_vf, 518 .get_host_state = fm10k_get_host_state_generic, 519}; 520 521static s32 fm10k_get_invariants_vf(struct fm10k_hw *hw) 522{ 523 fm10k_get_invariants_generic(hw); 524 525 return fm10k_pfvf_mbx_init(hw, &hw->mbx, fm10k_msg_data_vf, 0); 526} 527 528const struct fm10k_info fm10k_vf_info = { 529 .mac = fm10k_mac_vf, 530 .get_invariants = fm10k_get_invariants_vf, 531 .mac_ops = &mac_ops_vf, 532}; 533