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 FM10K_WRITE_REG(hw, FM10K_TDLEN(i), tdlen);
84 * fm10k_reset_hw_vf - VF hardware reset
85 * @hw: pointer to hardware structure
87 * This function should return the hardware to a state similar to the
88 * one it is in after just being initialized.
90 STATIC s32 fm10k_reset_hw_vf(struct fm10k_hw *hw)
94 DEBUGFUNC("fm10k_reset_hw_vf");
96 /* shut down queues we own and reset DMA configuration */
97 err = fm10k_stop_hw_vf(hw);
101 /* Inititate VF reset */
102 FM10K_WRITE_REG(hw, FM10K_VFCTRL, FM10K_VFCTRL_RST);
104 /* Flush write and allow 100us for reset to complete */
105 FM10K_WRITE_FLUSH(hw);
106 usec_delay(FM10K_RESET_TIMEOUT);
108 /* Clear reset bit and verify it was cleared */
109 FM10K_WRITE_REG(hw, FM10K_VFCTRL, 0);
110 if (FM10K_READ_REG(hw, FM10K_VFCTRL) & FM10K_VFCTRL_RST)
111 err = FM10K_ERR_RESET_FAILED;
117 * fm10k_init_hw_vf - VF hardware initialization
118 * @hw: pointer to hardware structure
121 STATIC s32 fm10k_init_hw_vf(struct fm10k_hw *hw)
123 u32 tqdloc, tqdloc0 = ~FM10K_READ_REG(hw, FM10K_TQDLOC(0));
127 DEBUGFUNC("fm10k_init_hw_vf");
129 /* verify we have at least 1 queue */
130 if (!~FM10K_READ_REG(hw, FM10K_TXQCTL(0)) ||
131 !~FM10K_READ_REG(hw, FM10K_RXQCTL(0)))
132 return FM10K_ERR_NO_RESOURCES;
134 /* determine how many queues we have */
135 for (i = 1; tqdloc0 && (i < FM10K_MAX_QUEUES_POOL); i++) {
136 /* verify the Descriptor cache offsets are increasing */
137 tqdloc = ~FM10K_READ_REG(hw, FM10K_TQDLOC(i));
138 if (!tqdloc || (tqdloc == tqdloc0))
141 /* check to verify the PF doesn't own any of our queues */
142 if (!~FM10K_READ_REG(hw, FM10K_TXQCTL(i)) ||
143 !~FM10K_READ_REG(hw, FM10K_RXQCTL(i)))
147 /* shut down queues we own and reset DMA configuration */
148 err = fm10k_disable_queues_generic(hw, i);
152 /* record maximum queue count */
153 hw->mac.max_queues = i;
155 /* fetch default VLAN and ITR scale */
156 hw->mac.default_vid = (FM10K_READ_REG(hw, FM10K_TXQCTL(0)) &
157 FM10K_TXQCTL_VID_MASK) >> FM10K_TXQCTL_VID_SHIFT;
158 hw->mac.itr_scale = (FM10K_READ_REG(hw, FM10K_TDLEN(0)) &
159 FM10K_TDLEN_ITR_SCALE_MASK) >>
160 FM10K_TDLEN_ITR_SCALE_SHIFT;
162 /* ensure a non-zero itr scale */
163 if (!hw->mac.itr_scale)
164 hw->mac.itr_scale = FM10K_TDLEN_ITR_SCALE_GEN3;
166 return FM10K_SUCCESS;
170 * fm10k_is_slot_appropriate_vf - Indicate appropriate slot for this SKU
171 * @hw: pointer to hardware structure
173 * Looks at the PCIe bus info to confirm whether or not this slot can support
174 * the necessary bandwidth for this device. Since the VF has no control over
175 * the "slot" it is in, always indicate that the slot is appropriate.
177 STATIC bool fm10k_is_slot_appropriate_vf(struct fm10k_hw *hw)
179 UNREFERENCED_1PARAMETER(hw);
180 DEBUGFUNC("fm10k_is_slot_appropriate_vf");
185 /* This structure defines the attibutes to be parsed below */
186 const struct fm10k_tlv_attr fm10k_mac_vlan_msg_attr[] = {
187 FM10K_TLV_ATTR_U32(FM10K_MAC_VLAN_MSG_VLAN),
188 FM10K_TLV_ATTR_BOOL(FM10K_MAC_VLAN_MSG_SET),
189 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MAC),
190 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_DEFAULT_MAC),
191 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MULTICAST),
196 * fm10k_update_vlan_vf - Update status of VLAN ID in VLAN filter table
197 * @hw: pointer to hardware structure
198 * @vid: VLAN ID to add to table
199 * @vsi: Reserved, should always be 0
200 * @set: Indicates if this is a set or clear operation
202 * This function adds or removes the corresponding VLAN ID from the VLAN
203 * filter table for this VF.
205 STATIC s32 fm10k_update_vlan_vf(struct fm10k_hw *hw, u32 vid, u8 vsi, bool set)
207 struct fm10k_mbx_info *mbx = &hw->mbx;
210 /* verify the index is not set */
212 return FM10K_ERR_PARAM;
214 /* verify upper 4 bits of vid and length are 0 */
215 if ((vid << 16 | vid) >> 28)
216 return FM10K_ERR_PARAM;
218 /* encode set bit into the VLAN ID */
220 vid |= FM10K_VLAN_CLEAR;
222 /* generate VLAN request */
223 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
224 fm10k_tlv_attr_put_u32(msg, FM10K_MAC_VLAN_MSG_VLAN, vid);
226 /* load onto outgoing mailbox */
227 return mbx->ops.enqueue_tx(hw, mbx, msg);
231 * fm10k_msg_mac_vlan_vf - Read device MAC address from mailbox message
232 * @hw: pointer to the HW structure
233 * @results: Attributes for message
234 * @mbx: unused mailbox data
236 * This function should determine the MAC address for the VF
238 s32 fm10k_msg_mac_vlan_vf(struct fm10k_hw *hw, u32 **results,
239 struct fm10k_mbx_info *mbx)
241 u8 perm_addr[ETH_ALEN];
245 UNREFERENCED_1PARAMETER(mbx);
246 DEBUGFUNC("fm10k_msg_mac_vlan_vf");
248 /* record MAC address requested */
249 err = fm10k_tlv_attr_get_mac_vlan(
250 results[FM10K_MAC_VLAN_MSG_DEFAULT_MAC],
255 memcpy(hw->mac.perm_addr, perm_addr, ETH_ALEN);
256 hw->mac.default_vid = vid & (FM10K_VLAN_TABLE_VID_MAX - 1);
257 hw->mac.vlan_override = !!(vid & FM10K_VLAN_CLEAR);
259 return FM10K_SUCCESS;
263 * fm10k_read_mac_addr_vf - Read device MAC address
264 * @hw: pointer to the HW structure
266 * This function should determine the MAC address for the VF
268 STATIC s32 fm10k_read_mac_addr_vf(struct fm10k_hw *hw)
270 u8 perm_addr[ETH_ALEN];
273 DEBUGFUNC("fm10k_read_mac_addr_vf");
275 base_addr = FM10K_READ_REG(hw, FM10K_TDBAL(0));
277 /* last byte should be 0 */
279 return FM10K_ERR_INVALID_MAC_ADDR;
281 perm_addr[3] = (u8)(base_addr >> 24);
282 perm_addr[4] = (u8)(base_addr >> 16);
283 perm_addr[5] = (u8)(base_addr >> 8);
285 base_addr = FM10K_READ_REG(hw, FM10K_TDBAH(0));
287 /* first byte should be all 1's */
288 if ((~base_addr) >> 24)
289 return FM10K_ERR_INVALID_MAC_ADDR;
291 perm_addr[0] = (u8)(base_addr >> 16);
292 perm_addr[1] = (u8)(base_addr >> 8);
293 perm_addr[2] = (u8)(base_addr);
295 memcpy(hw->mac.perm_addr, perm_addr, ETH_ALEN);
296 memcpy(hw->mac.addr, perm_addr, ETH_ALEN);
298 return FM10K_SUCCESS;
302 * fm10k_update_uc_addr_vf - Update device unicast addresses
303 * @hw: pointer to the HW structure
305 * @mac: MAC address to add/remove from table
306 * @vid: VLAN ID to add/remove from table
307 * @add: Indicates if this is an add or remove operation
308 * @flags: flags field to indicate add and secure - unused
310 * This function is used to add or remove unicast MAC addresses for
313 STATIC s32 fm10k_update_uc_addr_vf(struct fm10k_hw *hw, u16 glort,
314 const u8 *mac, u16 vid, bool add, u8 flags)
316 struct fm10k_mbx_info *mbx = &hw->mbx;
319 DEBUGFUNC("fm10k_update_uc_addr_vf");
321 UNREFERENCED_2PARAMETER(glort, flags);
323 /* verify VLAN ID is valid */
324 if (vid >= FM10K_VLAN_TABLE_VID_MAX)
325 return FM10K_ERR_PARAM;
327 /* verify MAC address is valid */
328 if (!FM10K_IS_VALID_ETHER_ADDR(mac))
329 return FM10K_ERR_PARAM;
331 /* verify we are not locked down on the MAC address */
332 if (FM10K_IS_VALID_ETHER_ADDR(hw->mac.perm_addr) &&
333 memcmp(hw->mac.perm_addr, mac, ETH_ALEN))
334 return FM10K_ERR_PARAM;
336 /* add bit to notify us if this is a set or clear operation */
338 vid |= FM10K_VLAN_CLEAR;
340 /* generate VLAN request */
341 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
342 fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MAC, mac, vid);
344 /* load onto outgoing mailbox */
345 return mbx->ops.enqueue_tx(hw, mbx, msg);
349 * fm10k_update_mc_addr_vf - Update device multicast addresses
350 * @hw: pointer to the HW structure
352 * @mac: MAC address to add/remove from table
353 * @vid: VLAN ID to add/remove from table
354 * @add: Indicates if this is an add or remove operation
356 * This function is used to add or remove multicast MAC addresses for
359 STATIC s32 fm10k_update_mc_addr_vf(struct fm10k_hw *hw, u16 glort,
360 const u8 *mac, u16 vid, bool add)
362 struct fm10k_mbx_info *mbx = &hw->mbx;
365 DEBUGFUNC("fm10k_update_uc_addr_vf");
367 UNREFERENCED_1PARAMETER(glort);
369 /* verify VLAN ID is valid */
370 if (vid >= FM10K_VLAN_TABLE_VID_MAX)
371 return FM10K_ERR_PARAM;
373 /* verify multicast address is valid */
374 if (!FM10K_IS_MULTICAST_ETHER_ADDR(mac))
375 return FM10K_ERR_PARAM;
377 /* add bit to notify us if this is a set or clear operation */
379 vid |= FM10K_VLAN_CLEAR;
381 /* generate VLAN request */
382 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
383 fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MULTICAST,
386 /* load onto outgoing mailbox */
387 return mbx->ops.enqueue_tx(hw, mbx, msg);
391 * fm10k_update_int_moderator_vf - Request update of interrupt moderator list
392 * @hw: pointer to hardware structure
394 * This function will issue a request to the PF to rescan our MSI-X table
395 * and to update the interrupt moderator linked list.
397 STATIC void fm10k_update_int_moderator_vf(struct fm10k_hw *hw)
399 struct fm10k_mbx_info *mbx = &hw->mbx;
402 /* generate MSI-X request */
403 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MSIX);
405 /* load onto outgoing mailbox */
406 mbx->ops.enqueue_tx(hw, mbx, msg);
409 /* This structure defines the attibutes to be parsed below */
410 const struct fm10k_tlv_attr fm10k_lport_state_msg_attr[] = {
411 FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_DISABLE),
412 FM10K_TLV_ATTR_U8(FM10K_LPORT_STATE_MSG_XCAST_MODE),
413 FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_READY),
418 * fm10k_msg_lport_state_vf - Message handler for lport_state message from PF
419 * @hw: Pointer to hardware structure
420 * @results: pointer array containing parsed data
421 * @mbx: Pointer to mailbox information structure
423 * This handler is meant to capture the indication from the PF that we
424 * are ready to bring up the interface.
426 s32 fm10k_msg_lport_state_vf(struct fm10k_hw *hw, u32 **results,
427 struct fm10k_mbx_info *mbx)
429 UNREFERENCED_1PARAMETER(mbx);
430 DEBUGFUNC("fm10k_msg_lport_state_vf");
432 hw->mac.dglort_map = !results[FM10K_LPORT_STATE_MSG_READY] ?
433 FM10K_DGLORTMAP_NONE : FM10K_DGLORTMAP_ZERO;
435 return FM10K_SUCCESS;
439 * fm10k_update_lport_state_vf - Update device state in lower device
440 * @hw: pointer to the HW structure
442 * @count: number of logical ports to enable - unused (always 1)
443 * @enable: boolean value indicating if this is an enable or disable request
445 * Notify the lower device of a state change. If the lower device is
446 * enabled we can add filters, if it is disabled all filters for this
447 * logical port are flushed.
449 STATIC s32 fm10k_update_lport_state_vf(struct fm10k_hw *hw, u16 glort,
450 u16 count, bool enable)
452 struct fm10k_mbx_info *mbx = &hw->mbx;
455 UNREFERENCED_2PARAMETER(glort, count);
456 DEBUGFUNC("fm10k_update_lport_state_vf");
458 /* reset glort mask 0 as we have to wait to be enabled */
459 hw->mac.dglort_map = FM10K_DGLORTMAP_NONE;
461 /* generate port state request */
462 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
464 fm10k_tlv_attr_put_bool(msg, FM10K_LPORT_STATE_MSG_DISABLE);
466 /* load onto outgoing mailbox */
467 return mbx->ops.enqueue_tx(hw, mbx, msg);
471 * fm10k_update_xcast_mode_vf - Request update of multicast mode
472 * @hw: pointer to hardware structure
474 * @mode: integer value indicating mode being requested
476 * This function will attempt to request a higher mode for the port
477 * so that it can enable either multicast, multicast promiscuous, or
478 * promiscuous mode of operation.
480 STATIC s32 fm10k_update_xcast_mode_vf(struct fm10k_hw *hw, u16 glort, u8 mode)
482 struct fm10k_mbx_info *mbx = &hw->mbx;
485 UNREFERENCED_1PARAMETER(glort);
486 DEBUGFUNC("fm10k_update_xcast_mode_vf");
488 if (mode > FM10K_XCAST_MODE_NONE)
489 return FM10K_ERR_PARAM;
491 /* generate message requesting to change xcast mode */
492 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
493 fm10k_tlv_attr_put_u8(msg, FM10K_LPORT_STATE_MSG_XCAST_MODE, mode);
495 /* load onto outgoing mailbox */
496 return mbx->ops.enqueue_tx(hw, mbx, msg);
499 const struct fm10k_tlv_attr fm10k_1588_msg_attr[] = {
500 FM10K_TLV_ATTR_U64(FM10K_1588_MSG_CLK_OFFSET),
504 /* currently there is no shared 1588 message handler */
507 * fm10k_update_hw_stats_vf - Updates hardware related statistics of VF
508 * @hw: pointer to hardware structure
509 * @stats: pointer to statistics structure
511 * This function collects and aggregates per queue hardware statistics.
513 STATIC void fm10k_update_hw_stats_vf(struct fm10k_hw *hw,
514 struct fm10k_hw_stats *stats)
516 DEBUGFUNC("fm10k_update_hw_stats_vf");
518 fm10k_update_hw_stats_q(hw, stats->q, 0, hw->mac.max_queues);
522 * fm10k_rebind_hw_stats_vf - Resets base for hardware statistics of VF
523 * @hw: pointer to hardware structure
524 * @stats: pointer to the stats structure to update
526 * This function resets the base for queue hardware statistics.
528 STATIC void fm10k_rebind_hw_stats_vf(struct fm10k_hw *hw,
529 struct fm10k_hw_stats *stats)
531 DEBUGFUNC("fm10k_rebind_hw_stats_vf");
533 /* Unbind Queue Statistics */
534 fm10k_unbind_hw_stats_q(stats->q, 0, hw->mac.max_queues);
536 /* Reinitialize bases for all stats */
537 fm10k_update_hw_stats_vf(hw, stats);
541 * fm10k_configure_dglort_map_vf - Configures GLORT entry and queues
542 * @hw: pointer to hardware structure
543 * @dglort: pointer to dglort configuration structure
545 * Reads the configuration structure contained in dglort_cfg and uses
546 * that information to then populate a DGLORTMAP/DEC entry and the queues
547 * to which it has been assigned.
549 STATIC s32 fm10k_configure_dglort_map_vf(struct fm10k_hw *hw,
550 struct fm10k_dglort_cfg *dglort)
552 UNREFERENCED_1PARAMETER(hw);
553 DEBUGFUNC("fm10k_configure_dglort_map_vf");
555 /* verify the dglort pointer */
557 return FM10K_ERR_PARAM;
559 /* stub for now until we determine correct message for this */
561 return FM10K_SUCCESS;
565 * fm10k_adjust_systime_vf - Adjust systime frequency
566 * @hw: pointer to hardware structure
567 * @ppb: adjustment rate in parts per billion
569 * This function takes an adjustment rate in parts per billion and will
570 * verify that this value is 0 as the VF cannot support adjusting the
573 * If the ppb value is non-zero the return is ERR_PARAM else success
575 STATIC s32 fm10k_adjust_systime_vf(struct fm10k_hw *hw, s32 ppb)
577 UNREFERENCED_1PARAMETER(hw);
578 DEBUGFUNC("fm10k_adjust_systime_vf");
580 /* The VF cannot adjust the clock frequency, however it should
581 * already have a syntonic clock with whichever host interface is
582 * running as the master for the host interface clock domain so
583 * there should be not frequency adjustment necessary.
585 return ppb ? FM10K_ERR_PARAM : FM10K_SUCCESS;
589 * fm10k_read_systime_vf - Reads value of systime registers
590 * @hw: pointer to the hardware structure
592 * Function reads the content of 2 registers, combined to represent a 64 bit
593 * value measured in nanoseconds. In order to guarantee the value is accurate
594 * we check the 32 most significant bits both before and after reading the
595 * 32 least significant bits to verify they didn't change as we were reading
598 static u64 fm10k_read_systime_vf(struct fm10k_hw *hw)
600 u32 systime_l, systime_h, systime_tmp;
602 systime_h = fm10k_read_reg(hw, FM10K_VFSYSTIME + 1);
605 systime_tmp = systime_h;
606 systime_l = fm10k_read_reg(hw, FM10K_VFSYSTIME);
607 systime_h = fm10k_read_reg(hw, FM10K_VFSYSTIME + 1);
608 } while (systime_tmp != systime_h);
610 return ((u64)systime_h << 32) | systime_l;
613 static const struct fm10k_msg_data fm10k_msg_data_vf[] = {
614 FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test),
615 FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_msg_mac_vlan_vf),
616 FM10K_VF_MSG_LPORT_STATE_HANDLER(fm10k_msg_lport_state_vf),
617 FM10K_TLV_MSG_ERROR_HANDLER(fm10k_tlv_msg_error),
621 * fm10k_init_ops_vf - Inits func ptrs and MAC type
622 * @hw: pointer to hardware structure
624 * Initialize the function pointers and assign the MAC type for VF.
625 * Does not touch the hardware.
627 s32 fm10k_init_ops_vf(struct fm10k_hw *hw)
629 struct fm10k_mac_info *mac = &hw->mac;
631 DEBUGFUNC("fm10k_init_ops_vf");
633 fm10k_init_ops_generic(hw);
635 mac->ops.reset_hw = &fm10k_reset_hw_vf;
636 mac->ops.init_hw = &fm10k_init_hw_vf;
637 mac->ops.start_hw = &fm10k_start_hw_generic;
638 mac->ops.stop_hw = &fm10k_stop_hw_vf;
639 mac->ops.is_slot_appropriate = &fm10k_is_slot_appropriate_vf;
640 mac->ops.update_vlan = &fm10k_update_vlan_vf;
641 mac->ops.read_mac_addr = &fm10k_read_mac_addr_vf;
642 mac->ops.update_uc_addr = &fm10k_update_uc_addr_vf;
643 mac->ops.update_mc_addr = &fm10k_update_mc_addr_vf;
644 mac->ops.update_xcast_mode = &fm10k_update_xcast_mode_vf;
645 mac->ops.update_int_moderator = &fm10k_update_int_moderator_vf;
646 mac->ops.update_lport_state = &fm10k_update_lport_state_vf;
647 mac->ops.update_hw_stats = &fm10k_update_hw_stats_vf;
648 mac->ops.rebind_hw_stats = &fm10k_rebind_hw_stats_vf;
649 mac->ops.configure_dglort_map = &fm10k_configure_dglort_map_vf;
650 mac->ops.get_host_state = &fm10k_get_host_state_generic;
651 mac->ops.adjust_systime = &fm10k_adjust_systime_vf;
652 mac->ops.read_systime = &fm10k_read_systime_vf;
654 mac->max_msix_vectors = fm10k_get_pcie_msix_count_generic(hw);
656 return fm10k_pfvf_mbx_init(hw, &hw->mbx, fm10k_msg_data_vf, 0);