1 /*******************************************************************************
3 Copyright (c) 2013 - 2015, Intel Corporation
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
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32 ***************************************************************************/
37 * fm10k_stop_hw_vf - Stop Tx/Rx units
38 * @hw: pointer to hardware structure
41 STATIC s32 fm10k_stop_hw_vf(struct fm10k_hw *hw)
43 u8 *perm_addr = hw->mac.perm_addr;
44 u32 bal = 0, bah = 0, tdlen;
48 DEBUGFUNC("fm10k_stop_hw_vf");
50 /* we need to disable the queues before taking further steps */
51 err = fm10k_stop_hw_generic(hw);
55 /* If permanent address is set then we need to restore it */
56 if (FM10K_IS_VALID_ETHER_ADDR(perm_addr)) {
57 bal = (((u32)perm_addr[3]) << 24) |
58 (((u32)perm_addr[4]) << 16) |
59 (((u32)perm_addr[5]) << 8);
60 bah = (((u32)0xFF) << 24) |
61 (((u32)perm_addr[0]) << 16) |
62 (((u32)perm_addr[1]) << 8) |
66 /* restore default itr_scale for next VF initialization */
67 tdlen = hw->mac.itr_scale << FM10K_TDLEN_ITR_SCALE_SHIFT;
69 /* The queues have already been disabled so we just need to
70 * update their base address registers
72 for (i = 0; i < hw->mac.max_queues; i++) {
73 FM10K_WRITE_REG(hw, FM10K_TDBAL(i), bal);
74 FM10K_WRITE_REG(hw, FM10K_TDBAH(i), bah);
75 FM10K_WRITE_REG(hw, FM10K_RDBAL(i), bal);
76 FM10K_WRITE_REG(hw, FM10K_RDBAH(i), bah);
77 /* Restore ITR scale in software-defined mechanism in TDLEN
78 * for next VF initialization. See definition of
79 * FM10K_TDLEN_ITR_SCALE_SHIFT for more details on the use of
82 FM10K_WRITE_REG(hw, FM10K_TDLEN(i), tdlen);
89 * fm10k_reset_hw_vf - VF hardware reset
90 * @hw: pointer to hardware structure
92 * This function should return the hardware to a state similar to the
93 * one it is in after just being initialized.
95 STATIC s32 fm10k_reset_hw_vf(struct fm10k_hw *hw)
99 DEBUGFUNC("fm10k_reset_hw_vf");
101 /* shut down queues we own and reset DMA configuration */
102 err = fm10k_stop_hw_vf(hw);
106 /* Inititate VF reset */
107 FM10K_WRITE_REG(hw, FM10K_VFCTRL, FM10K_VFCTRL_RST);
109 /* Flush write and allow 100us for reset to complete */
110 FM10K_WRITE_FLUSH(hw);
111 usec_delay(FM10K_RESET_TIMEOUT);
113 /* Clear reset bit and verify it was cleared */
114 FM10K_WRITE_REG(hw, FM10K_VFCTRL, 0);
115 if (FM10K_READ_REG(hw, FM10K_VFCTRL) & FM10K_VFCTRL_RST)
116 err = FM10K_ERR_RESET_FAILED;
122 * fm10k_init_hw_vf - VF hardware initialization
123 * @hw: pointer to hardware structure
126 STATIC s32 fm10k_init_hw_vf(struct fm10k_hw *hw)
128 u32 tqdloc, tqdloc0 = ~FM10K_READ_REG(hw, FM10K_TQDLOC(0));
132 DEBUGFUNC("fm10k_init_hw_vf");
134 /* verify we have at least 1 queue */
135 if (!~FM10K_READ_REG(hw, FM10K_TXQCTL(0)) ||
136 !~FM10K_READ_REG(hw, FM10K_RXQCTL(0))) {
137 err = FM10K_ERR_NO_RESOURCES;
138 goto reset_max_queues;
141 /* determine how many queues we have */
142 for (i = 1; tqdloc0 && (i < FM10K_MAX_QUEUES_POOL); i++) {
143 /* verify the Descriptor cache offsets are increasing */
144 tqdloc = ~FM10K_READ_REG(hw, FM10K_TQDLOC(i));
145 if (!tqdloc || (tqdloc == tqdloc0))
148 /* check to verify the PF doesn't own any of our queues */
149 if (!~FM10K_READ_REG(hw, FM10K_TXQCTL(i)) ||
150 !~FM10K_READ_REG(hw, FM10K_RXQCTL(i)))
154 /* shut down queues we own and reset DMA configuration */
155 err = fm10k_disable_queues_generic(hw, i);
157 goto reset_max_queues;
159 /* record maximum queue count */
160 hw->mac.max_queues = i;
162 /* fetch default VLAN and ITR scale */
163 hw->mac.default_vid = (FM10K_READ_REG(hw, FM10K_TXQCTL(0)) &
164 FM10K_TXQCTL_VID_MASK) >> FM10K_TXQCTL_VID_SHIFT;
165 /* Read the ITR scale from TDLEN. See the definition of
166 * FM10K_TDLEN_ITR_SCALE_SHIFT for more information about how TDLEN is
169 hw->mac.itr_scale = (FM10K_READ_REG(hw, FM10K_TDLEN(0)) &
170 FM10K_TDLEN_ITR_SCALE_MASK) >>
171 FM10K_TDLEN_ITR_SCALE_SHIFT;
173 return FM10K_SUCCESS;
176 hw->mac.max_queues = 0;
181 #ifndef NO_IS_SLOT_APPROPRIATE_CHECK
183 * fm10k_is_slot_appropriate_vf - Indicate appropriate slot for this SKU
184 * @hw: pointer to hardware structure
186 * Looks at the PCIe bus info to confirm whether or not this slot can support
187 * the necessary bandwidth for this device. Since the VF has no control over
188 * the "slot" it is in, always indicate that the slot is appropriate.
190 STATIC bool fm10k_is_slot_appropriate_vf(struct fm10k_hw *hw)
192 UNREFERENCED_1PARAMETER(hw);
193 DEBUGFUNC("fm10k_is_slot_appropriate_vf");
199 /* This structure defines the attibutes to be parsed below */
200 const struct fm10k_tlv_attr fm10k_mac_vlan_msg_attr[] = {
201 FM10K_TLV_ATTR_U32(FM10K_MAC_VLAN_MSG_VLAN),
202 FM10K_TLV_ATTR_BOOL(FM10K_MAC_VLAN_MSG_SET),
203 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MAC),
204 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_DEFAULT_MAC),
205 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MULTICAST),
210 * fm10k_update_vlan_vf - Update status of VLAN ID in VLAN filter table
211 * @hw: pointer to hardware structure
212 * @vid: VLAN ID to add to table
213 * @vsi: Reserved, should always be 0
214 * @set: Indicates if this is a set or clear operation
216 * This function adds or removes the corresponding VLAN ID from the VLAN
217 * filter table for this VF.
219 STATIC s32 fm10k_update_vlan_vf(struct fm10k_hw *hw, u32 vid, u8 vsi, bool set)
221 struct fm10k_mbx_info *mbx = &hw->mbx;
224 /* verify the index is not set */
226 return FM10K_ERR_PARAM;
228 /* clever trick to verify reserved bits in both vid and length */
229 if ((vid << 16 | vid) >> 28)
230 return FM10K_ERR_PARAM;
232 /* encode set bit into the VLAN ID */
234 vid |= FM10K_VLAN_CLEAR;
236 /* generate VLAN request */
237 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
238 fm10k_tlv_attr_put_u32(msg, FM10K_MAC_VLAN_MSG_VLAN, vid);
240 /* load onto outgoing mailbox */
241 return mbx->ops.enqueue_tx(hw, mbx, msg);
245 * fm10k_msg_mac_vlan_vf - Read device MAC address from mailbox message
246 * @hw: pointer to the HW structure
247 * @results: Attributes for message
248 * @mbx: unused mailbox data
250 * This function should determine the MAC address for the VF
252 s32 fm10k_msg_mac_vlan_vf(struct fm10k_hw *hw, u32 **results,
253 struct fm10k_mbx_info *mbx)
255 u8 perm_addr[ETH_ALEN];
259 UNREFERENCED_1PARAMETER(mbx);
260 DEBUGFUNC("fm10k_msg_mac_vlan_vf");
262 /* record MAC address requested */
263 err = fm10k_tlv_attr_get_mac_vlan(
264 results[FM10K_MAC_VLAN_MSG_DEFAULT_MAC],
269 memcpy(hw->mac.perm_addr, perm_addr, ETH_ALEN);
270 hw->mac.default_vid = vid & (FM10K_VLAN_TABLE_VID_MAX - 1);
271 hw->mac.vlan_override = !!(vid & FM10K_VLAN_OVERRIDE);
273 return FM10K_SUCCESS;
277 * fm10k_read_mac_addr_vf - Read device MAC address
278 * @hw: pointer to the HW structure
280 * This function should determine the MAC address for the VF
282 STATIC s32 fm10k_read_mac_addr_vf(struct fm10k_hw *hw)
284 u8 perm_addr[ETH_ALEN];
287 DEBUGFUNC("fm10k_read_mac_addr_vf");
289 base_addr = FM10K_READ_REG(hw, FM10K_TDBAL(0));
291 /* last byte should be 0 */
293 return FM10K_ERR_INVALID_MAC_ADDR;
295 perm_addr[3] = (u8)(base_addr >> 24);
296 perm_addr[4] = (u8)(base_addr >> 16);
297 perm_addr[5] = (u8)(base_addr >> 8);
299 base_addr = FM10K_READ_REG(hw, FM10K_TDBAH(0));
301 /* first byte should be all 1's */
302 if ((~base_addr) >> 24)
303 return FM10K_ERR_INVALID_MAC_ADDR;
305 perm_addr[0] = (u8)(base_addr >> 16);
306 perm_addr[1] = (u8)(base_addr >> 8);
307 perm_addr[2] = (u8)(base_addr);
309 memcpy(hw->mac.perm_addr, perm_addr, ETH_ALEN);
310 memcpy(hw->mac.addr, perm_addr, ETH_ALEN);
312 return FM10K_SUCCESS;
316 * fm10k_update_uc_addr_vf - Update device unicast addresses
317 * @hw: pointer to the HW structure
319 * @mac: MAC address to add/remove from table
320 * @vid: VLAN ID to add/remove from table
321 * @add: Indicates if this is an add or remove operation
322 * @flags: flags field to indicate add and secure - unused
324 * This function is used to add or remove unicast MAC addresses for
327 STATIC s32 fm10k_update_uc_addr_vf(struct fm10k_hw *hw, u16 glort,
328 const u8 *mac, u16 vid, bool add, u8 flags)
330 struct fm10k_mbx_info *mbx = &hw->mbx;
333 DEBUGFUNC("fm10k_update_uc_addr_vf");
335 UNREFERENCED_2PARAMETER(glort, flags);
337 /* verify VLAN ID is valid */
338 if (vid >= FM10K_VLAN_TABLE_VID_MAX)
339 return FM10K_ERR_PARAM;
341 /* verify MAC address is valid */
342 if (!FM10K_IS_VALID_ETHER_ADDR(mac))
343 return FM10K_ERR_PARAM;
345 /* verify we are not locked down on the MAC address */
346 if (FM10K_IS_VALID_ETHER_ADDR(hw->mac.perm_addr) &&
347 memcmp(hw->mac.perm_addr, mac, ETH_ALEN))
348 return FM10K_ERR_PARAM;
350 /* add bit to notify us if this is a set or clear operation */
352 vid |= FM10K_VLAN_CLEAR;
354 /* generate VLAN request */
355 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
356 fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MAC, mac, vid);
358 /* load onto outgoing mailbox */
359 return mbx->ops.enqueue_tx(hw, mbx, msg);
363 * fm10k_update_mc_addr_vf - Update device multicast addresses
364 * @hw: pointer to the HW structure
366 * @mac: MAC address to add/remove from table
367 * @vid: VLAN ID to add/remove from table
368 * @add: Indicates if this is an add or remove operation
370 * This function is used to add or remove multicast MAC addresses for
373 STATIC s32 fm10k_update_mc_addr_vf(struct fm10k_hw *hw, u16 glort,
374 const u8 *mac, u16 vid, bool add)
376 struct fm10k_mbx_info *mbx = &hw->mbx;
379 DEBUGFUNC("fm10k_update_uc_addr_vf");
381 UNREFERENCED_1PARAMETER(glort);
383 /* verify VLAN ID is valid */
384 if (vid >= FM10K_VLAN_TABLE_VID_MAX)
385 return FM10K_ERR_PARAM;
387 /* verify multicast address is valid */
388 if (!FM10K_IS_MULTICAST_ETHER_ADDR(mac))
389 return FM10K_ERR_PARAM;
391 /* add bit to notify us if this is a set or clear operation */
393 vid |= FM10K_VLAN_CLEAR;
395 /* generate VLAN request */
396 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
397 fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MULTICAST,
400 /* load onto outgoing mailbox */
401 return mbx->ops.enqueue_tx(hw, mbx, msg);
405 * fm10k_update_int_moderator_vf - Request update of interrupt moderator list
406 * @hw: pointer to hardware structure
408 * This function will issue a request to the PF to rescan our MSI-X table
409 * and to update the interrupt moderator linked list.
411 STATIC void fm10k_update_int_moderator_vf(struct fm10k_hw *hw)
413 struct fm10k_mbx_info *mbx = &hw->mbx;
416 /* generate MSI-X request */
417 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MSIX);
419 /* load onto outgoing mailbox */
420 mbx->ops.enqueue_tx(hw, mbx, msg);
423 /* This structure defines the attibutes to be parsed below */
424 const struct fm10k_tlv_attr fm10k_lport_state_msg_attr[] = {
425 FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_DISABLE),
426 FM10K_TLV_ATTR_U8(FM10K_LPORT_STATE_MSG_XCAST_MODE),
427 FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_READY),
432 * fm10k_msg_lport_state_vf - Message handler for lport_state message from PF
433 * @hw: Pointer to hardware structure
434 * @results: pointer array containing parsed data
435 * @mbx: Pointer to mailbox information structure
437 * This handler is meant to capture the indication from the PF that we
438 * are ready to bring up the interface.
440 s32 fm10k_msg_lport_state_vf(struct fm10k_hw *hw, u32 **results,
441 struct fm10k_mbx_info *mbx)
443 UNREFERENCED_1PARAMETER(mbx);
444 DEBUGFUNC("fm10k_msg_lport_state_vf");
446 hw->mac.dglort_map = !results[FM10K_LPORT_STATE_MSG_READY] ?
447 FM10K_DGLORTMAP_NONE : FM10K_DGLORTMAP_ZERO;
449 return FM10K_SUCCESS;
453 * fm10k_update_lport_state_vf - Update device state in lower device
454 * @hw: pointer to the HW structure
456 * @count: number of logical ports to enable - unused (always 1)
457 * @enable: boolean value indicating if this is an enable or disable request
459 * Notify the lower device of a state change. If the lower device is
460 * enabled we can add filters, if it is disabled all filters for this
461 * logical port are flushed.
463 STATIC s32 fm10k_update_lport_state_vf(struct fm10k_hw *hw, u16 glort,
464 u16 count, bool enable)
466 struct fm10k_mbx_info *mbx = &hw->mbx;
469 UNREFERENCED_2PARAMETER(glort, count);
470 DEBUGFUNC("fm10k_update_lport_state_vf");
472 /* reset glort mask 0 as we have to wait to be enabled */
473 hw->mac.dglort_map = FM10K_DGLORTMAP_NONE;
475 /* generate port state request */
476 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
478 fm10k_tlv_attr_put_bool(msg, FM10K_LPORT_STATE_MSG_DISABLE);
480 /* load onto outgoing mailbox */
481 return mbx->ops.enqueue_tx(hw, mbx, msg);
485 * fm10k_update_xcast_mode_vf - Request update of multicast mode
486 * @hw: pointer to hardware structure
488 * @mode: integer value indicating mode being requested
490 * This function will attempt to request a higher mode for the port
491 * so that it can enable either multicast, multicast promiscuous, or
492 * promiscuous mode of operation.
494 STATIC s32 fm10k_update_xcast_mode_vf(struct fm10k_hw *hw, u16 glort, u8 mode)
496 struct fm10k_mbx_info *mbx = &hw->mbx;
499 UNREFERENCED_1PARAMETER(glort);
500 DEBUGFUNC("fm10k_update_xcast_mode_vf");
502 if (mode > FM10K_XCAST_MODE_NONE)
503 return FM10K_ERR_PARAM;
505 /* generate message requesting to change xcast mode */
506 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
507 fm10k_tlv_attr_put_u8(msg, FM10K_LPORT_STATE_MSG_XCAST_MODE, mode);
509 /* load onto outgoing mailbox */
510 return mbx->ops.enqueue_tx(hw, mbx, msg);
513 const struct fm10k_tlv_attr fm10k_1588_msg_attr[] = {
514 FM10K_TLV_ATTR_U64(FM10K_1588_MSG_CLK_OFFSET),
518 /* currently there is no shared 1588 message handler */
521 * fm10k_update_hw_stats_vf - Updates hardware related statistics of VF
522 * @hw: pointer to hardware structure
523 * @stats: pointer to statistics structure
525 * This function collects and aggregates per queue hardware statistics.
527 STATIC void fm10k_update_hw_stats_vf(struct fm10k_hw *hw,
528 struct fm10k_hw_stats *stats)
530 DEBUGFUNC("fm10k_update_hw_stats_vf");
532 fm10k_update_hw_stats_q(hw, stats->q, 0, hw->mac.max_queues);
536 * fm10k_rebind_hw_stats_vf - Resets base for hardware statistics of VF
537 * @hw: pointer to hardware structure
538 * @stats: pointer to the stats structure to update
540 * This function resets the base for queue hardware statistics.
542 STATIC void fm10k_rebind_hw_stats_vf(struct fm10k_hw *hw,
543 struct fm10k_hw_stats *stats)
545 DEBUGFUNC("fm10k_rebind_hw_stats_vf");
547 /* Unbind Queue Statistics */
548 fm10k_unbind_hw_stats_q(stats->q, 0, hw->mac.max_queues);
550 /* Reinitialize bases for all stats */
551 fm10k_update_hw_stats_vf(hw, stats);
555 * fm10k_configure_dglort_map_vf - Configures GLORT entry and queues
556 * @hw: pointer to hardware structure
557 * @dglort: pointer to dglort configuration structure
559 * Reads the configuration structure contained in dglort_cfg and uses
560 * that information to then populate a DGLORTMAP/DEC entry and the queues
561 * to which it has been assigned.
563 STATIC s32 fm10k_configure_dglort_map_vf(struct fm10k_hw *hw,
564 struct fm10k_dglort_cfg *dglort)
566 UNREFERENCED_1PARAMETER(hw);
567 DEBUGFUNC("fm10k_configure_dglort_map_vf");
569 /* verify the dglort pointer */
571 return FM10K_ERR_PARAM;
573 /* stub for now until we determine correct message for this */
575 return FM10K_SUCCESS;
579 * fm10k_adjust_systime_vf - Adjust systime frequency
580 * @hw: pointer to hardware structure
581 * @ppb: adjustment rate in parts per billion
583 * This function takes an adjustment rate in parts per billion and will
584 * verify that this value is 0 as the VF cannot support adjusting the
587 * If the ppb value is non-zero the return is ERR_PARAM else success
589 STATIC s32 fm10k_adjust_systime_vf(struct fm10k_hw *hw, s32 ppb)
591 UNREFERENCED_1PARAMETER(hw);
592 DEBUGFUNC("fm10k_adjust_systime_vf");
594 /* The VF cannot adjust the clock frequency, however it should
595 * already have a syntonic clock with whichever host interface is
596 * running as the master for the host interface clock domain so
597 * there should be not frequency adjustment necessary.
599 return ppb ? FM10K_ERR_PARAM : FM10K_SUCCESS;
603 * fm10k_read_systime_vf - Reads value of systime registers
604 * @hw: pointer to the hardware structure
606 * Function reads the content of 2 registers, combined to represent a 64 bit
607 * value measured in nanoseconds. In order to guarantee the value is accurate
608 * we check the 32 most significant bits both before and after reading the
609 * 32 least significant bits to verify they didn't change as we were reading
612 static u64 fm10k_read_systime_vf(struct fm10k_hw *hw)
614 u32 systime_l, systime_h, systime_tmp;
616 systime_h = fm10k_read_reg(hw, FM10K_VFSYSTIME + 1);
619 systime_tmp = systime_h;
620 systime_l = fm10k_read_reg(hw, FM10K_VFSYSTIME);
621 systime_h = fm10k_read_reg(hw, FM10K_VFSYSTIME + 1);
622 } while (systime_tmp != systime_h);
624 return ((u64)systime_h << 32) | systime_l;
627 static const struct fm10k_msg_data fm10k_msg_data_vf[] = {
628 FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test),
629 FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_msg_mac_vlan_vf),
630 FM10K_VF_MSG_LPORT_STATE_HANDLER(fm10k_msg_lport_state_vf),
631 FM10K_TLV_MSG_ERROR_HANDLER(fm10k_tlv_msg_error),
635 * fm10k_init_ops_vf - Inits func ptrs and MAC type
636 * @hw: pointer to hardware structure
638 * Initialize the function pointers and assign the MAC type for VF.
639 * Does not touch the hardware.
641 s32 fm10k_init_ops_vf(struct fm10k_hw *hw)
643 struct fm10k_mac_info *mac = &hw->mac;
645 DEBUGFUNC("fm10k_init_ops_vf");
647 fm10k_init_ops_generic(hw);
649 mac->ops.reset_hw = &fm10k_reset_hw_vf;
650 mac->ops.init_hw = &fm10k_init_hw_vf;
651 mac->ops.start_hw = &fm10k_start_hw_generic;
652 mac->ops.stop_hw = &fm10k_stop_hw_vf;
653 #ifndef NO_IS_SLOT_APPROPRIATE_CHECK
654 mac->ops.is_slot_appropriate = &fm10k_is_slot_appropriate_vf;
656 mac->ops.update_vlan = &fm10k_update_vlan_vf;
657 mac->ops.read_mac_addr = &fm10k_read_mac_addr_vf;
658 mac->ops.update_uc_addr = &fm10k_update_uc_addr_vf;
659 mac->ops.update_mc_addr = &fm10k_update_mc_addr_vf;
660 mac->ops.update_xcast_mode = &fm10k_update_xcast_mode_vf;
661 mac->ops.update_int_moderator = &fm10k_update_int_moderator_vf;
662 mac->ops.update_lport_state = &fm10k_update_lport_state_vf;
663 mac->ops.update_hw_stats = &fm10k_update_hw_stats_vf;
664 mac->ops.rebind_hw_stats = &fm10k_rebind_hw_stats_vf;
665 mac->ops.configure_dglort_map = &fm10k_configure_dglort_map_vf;
666 mac->ops.get_host_state = &fm10k_get_host_state_generic;
667 mac->ops.adjust_systime = &fm10k_adjust_systime_vf;
668 mac->ops.read_systime = &fm10k_read_systime_vf;
670 mac->max_msix_vectors = fm10k_get_pcie_msix_count_generic(hw);
672 return fm10k_pfvf_mbx_init(hw, &hw->mbx, fm10k_msg_data_vf, 0);