1 // SPDX-License-Identifier: GPL-2.0
2 /* Intel(R) Ethernet Switch Host Interface Driver
3 * Copyright(c) 2013 - 2016 Intel Corporation.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * The full GNU General Public License is included in this distribution in
15 * the file called "COPYING".
17 * Contact Information:
18 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
19 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 * fm10k_stop_hw_vf - Stop Tx/Rx units
26 * @hw: pointer to hardware structure
29 static s32 fm10k_stop_hw_vf(struct fm10k_hw *hw)
31 u8 *perm_addr = hw->mac.perm_addr;
32 u32 bal = 0, bah = 0, tdlen;
36 /* we need to disable the queues before taking further steps */
37 err = fm10k_stop_hw_generic(hw);
38 if (err && err != FM10K_ERR_REQUESTS_PENDING)
41 /* If permanent address is set then we need to restore it */
42 if (is_valid_ether_addr(perm_addr)) {
43 bal = (((u32)perm_addr[3]) << 24) |
44 (((u32)perm_addr[4]) << 16) |
45 (((u32)perm_addr[5]) << 8);
46 bah = (((u32)0xFF) << 24) |
47 (((u32)perm_addr[0]) << 16) |
48 (((u32)perm_addr[1]) << 8) |
52 /* restore default itr_scale for next VF initialization */
53 tdlen = hw->mac.itr_scale << FM10K_TDLEN_ITR_SCALE_SHIFT;
55 /* The queues have already been disabled so we just need to
56 * update their base address registers
58 for (i = 0; i < hw->mac.max_queues; i++) {
59 fm10k_write_reg(hw, FM10K_TDBAL(i), bal);
60 fm10k_write_reg(hw, FM10K_TDBAH(i), bah);
61 fm10k_write_reg(hw, FM10K_RDBAL(i), bal);
62 fm10k_write_reg(hw, FM10K_RDBAH(i), bah);
63 /* Restore ITR scale in software-defined mechanism in TDLEN
64 * for next VF initialization. See definition of
65 * FM10K_TDLEN_ITR_SCALE_SHIFT for more details on the use of
68 fm10k_write_reg(hw, FM10K_TDLEN(i), tdlen);
75 * fm10k_reset_hw_vf - VF hardware reset
76 * @hw: pointer to hardware structure
78 * This function should return the hardware to a state similar to the
79 * one it is in after just being initialized.
81 static s32 fm10k_reset_hw_vf(struct fm10k_hw *hw)
85 /* shut down queues we own and reset DMA configuration */
86 err = fm10k_stop_hw_vf(hw);
87 if (err == FM10K_ERR_REQUESTS_PENDING)
88 hw->mac.reset_while_pending++;
92 /* Inititate VF reset */
93 fm10k_write_reg(hw, FM10K_VFCTRL, FM10K_VFCTRL_RST);
95 /* Flush write and allow 100us for reset to complete */
96 fm10k_write_flush(hw);
97 udelay(FM10K_RESET_TIMEOUT);
99 /* Clear reset bit and verify it was cleared */
100 fm10k_write_reg(hw, FM10K_VFCTRL, 0);
101 if (fm10k_read_reg(hw, FM10K_VFCTRL) & FM10K_VFCTRL_RST)
102 return FM10K_ERR_RESET_FAILED;
108 * fm10k_init_hw_vf - VF hardware initialization
109 * @hw: pointer to hardware structure
112 static s32 fm10k_init_hw_vf(struct fm10k_hw *hw)
114 u32 tqdloc, tqdloc0 = ~fm10k_read_reg(hw, FM10K_TQDLOC(0));
118 /* verify we have at least 1 queue */
119 if (!~fm10k_read_reg(hw, FM10K_TXQCTL(0)) ||
120 !~fm10k_read_reg(hw, FM10K_RXQCTL(0))) {
121 err = FM10K_ERR_NO_RESOURCES;
122 goto reset_max_queues;
125 /* determine how many queues we have */
126 for (i = 1; tqdloc0 && (i < FM10K_MAX_QUEUES_POOL); i++) {
127 /* verify the Descriptor cache offsets are increasing */
128 tqdloc = ~fm10k_read_reg(hw, FM10K_TQDLOC(i));
129 if (!tqdloc || (tqdloc == tqdloc0))
132 /* check to verify the PF doesn't own any of our queues */
133 if (!~fm10k_read_reg(hw, FM10K_TXQCTL(i)) ||
134 !~fm10k_read_reg(hw, FM10K_RXQCTL(i)))
138 /* shut down queues we own and reset DMA configuration */
139 err = fm10k_disable_queues_generic(hw, i);
141 goto reset_max_queues;
143 /* record maximum queue count */
144 hw->mac.max_queues = i;
146 /* fetch default VLAN and ITR scale */
147 hw->mac.default_vid = (fm10k_read_reg(hw, FM10K_TXQCTL(0)) &
148 FM10K_TXQCTL_VID_MASK) >> FM10K_TXQCTL_VID_SHIFT;
149 /* Read the ITR scale from TDLEN. See the definition of
150 * FM10K_TDLEN_ITR_SCALE_SHIFT for more information about how TDLEN is
153 hw->mac.itr_scale = (fm10k_read_reg(hw, FM10K_TDLEN(0)) &
154 FM10K_TDLEN_ITR_SCALE_MASK) >>
155 FM10K_TDLEN_ITR_SCALE_SHIFT;
160 hw->mac.max_queues = 0;
165 /* This structure defines the attibutes to be parsed below */
166 const struct fm10k_tlv_attr fm10k_mac_vlan_msg_attr[] = {
167 FM10K_TLV_ATTR_U32(FM10K_MAC_VLAN_MSG_VLAN),
168 FM10K_TLV_ATTR_BOOL(FM10K_MAC_VLAN_MSG_SET),
169 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MAC),
170 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_DEFAULT_MAC),
171 FM10K_TLV_ATTR_MAC_ADDR(FM10K_MAC_VLAN_MSG_MULTICAST),
176 * fm10k_update_vlan_vf - Update status of VLAN ID in VLAN filter table
177 * @hw: pointer to hardware structure
178 * @vid: VLAN ID to add to table
179 * @vsi: Reserved, should always be 0
180 * @set: Indicates if this is a set or clear operation
182 * This function adds or removes the corresponding VLAN ID from the VLAN
183 * filter table for this VF.
185 static s32 fm10k_update_vlan_vf(struct fm10k_hw *hw, u32 vid, u8 vsi, bool set)
187 struct fm10k_mbx_info *mbx = &hw->mbx;
190 /* verify the index is not set */
192 return FM10K_ERR_PARAM;
194 /* clever trick to verify reserved bits in both vid and length */
195 if ((vid << 16 | vid) >> 28)
196 return FM10K_ERR_PARAM;
198 /* encode set bit into the VLAN ID */
200 vid |= FM10K_VLAN_CLEAR;
202 /* generate VLAN request */
203 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
204 fm10k_tlv_attr_put_u32(msg, FM10K_MAC_VLAN_MSG_VLAN, vid);
206 /* load onto outgoing mailbox */
207 return mbx->ops.enqueue_tx(hw, mbx, msg);
211 * fm10k_msg_mac_vlan_vf - Read device MAC address from mailbox message
212 * @hw: pointer to the HW structure
213 * @results: Attributes for message
214 * @mbx: unused mailbox data
216 * This function should determine the MAC address for the VF
218 s32 fm10k_msg_mac_vlan_vf(struct fm10k_hw *hw, u32 **results,
219 struct fm10k_mbx_info *mbx)
221 u8 perm_addr[ETH_ALEN];
225 /* record MAC address requested */
226 err = fm10k_tlv_attr_get_mac_vlan(
227 results[FM10K_MAC_VLAN_MSG_DEFAULT_MAC],
232 ether_addr_copy(hw->mac.perm_addr, perm_addr);
233 hw->mac.default_vid = vid & (FM10K_VLAN_TABLE_VID_MAX - 1);
234 hw->mac.vlan_override = !!(vid & FM10K_VLAN_OVERRIDE);
240 * fm10k_read_mac_addr_vf - Read device MAC address
241 * @hw: pointer to the HW structure
243 * This function should determine the MAC address for the VF
245 static s32 fm10k_read_mac_addr_vf(struct fm10k_hw *hw)
247 u8 perm_addr[ETH_ALEN];
250 base_addr = fm10k_read_reg(hw, FM10K_TDBAL(0));
252 /* last byte should be 0 */
254 return FM10K_ERR_INVALID_MAC_ADDR;
256 perm_addr[3] = (u8)(base_addr >> 24);
257 perm_addr[4] = (u8)(base_addr >> 16);
258 perm_addr[5] = (u8)(base_addr >> 8);
260 base_addr = fm10k_read_reg(hw, FM10K_TDBAH(0));
262 /* first byte should be all 1's */
263 if ((~base_addr) >> 24)
264 return FM10K_ERR_INVALID_MAC_ADDR;
266 perm_addr[0] = (u8)(base_addr >> 16);
267 perm_addr[1] = (u8)(base_addr >> 8);
268 perm_addr[2] = (u8)(base_addr);
270 ether_addr_copy(hw->mac.perm_addr, perm_addr);
271 ether_addr_copy(hw->mac.addr, perm_addr);
277 * fm10k_update_uc_addr_vf - Update device unicast addresses
278 * @hw: pointer to the HW structure
280 * @mac: MAC address to add/remove from table
281 * @vid: VLAN ID to add/remove from table
282 * @add: Indicates if this is an add or remove operation
283 * @flags: flags field to indicate add and secure - unused
285 * This function is used to add or remove unicast MAC addresses for
288 static s32 fm10k_update_uc_addr_vf(struct fm10k_hw *hw, u16 glort,
289 const u8 *mac, u16 vid, bool add, u8 flags)
291 struct fm10k_mbx_info *mbx = &hw->mbx;
294 /* verify VLAN ID is valid */
295 if (vid >= FM10K_VLAN_TABLE_VID_MAX)
296 return FM10K_ERR_PARAM;
298 /* verify MAC address is valid */
299 if (!is_valid_ether_addr(mac))
300 return FM10K_ERR_PARAM;
302 /* verify we are not locked down on the MAC address */
303 if (is_valid_ether_addr(hw->mac.perm_addr) &&
304 !ether_addr_equal(hw->mac.perm_addr, mac))
305 return FM10K_ERR_PARAM;
307 /* add bit to notify us if this is a set or clear operation */
309 vid |= FM10K_VLAN_CLEAR;
311 /* generate VLAN request */
312 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
313 fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MAC, mac, vid);
315 /* load onto outgoing mailbox */
316 return mbx->ops.enqueue_tx(hw, mbx, msg);
320 * fm10k_update_mc_addr_vf - Update device multicast addresses
321 * @hw: pointer to the HW structure
323 * @mac: MAC address to add/remove from table
324 * @vid: VLAN ID to add/remove from table
325 * @add: Indicates if this is an add or remove operation
327 * This function is used to add or remove multicast MAC addresses for
330 static s32 fm10k_update_mc_addr_vf(struct fm10k_hw *hw, u16 glort,
331 const u8 *mac, u16 vid, bool add)
333 struct fm10k_mbx_info *mbx = &hw->mbx;
336 /* verify VLAN ID is valid */
337 if (vid >= FM10K_VLAN_TABLE_VID_MAX)
338 return FM10K_ERR_PARAM;
340 /* verify multicast address is valid */
341 if (!is_multicast_ether_addr(mac))
342 return FM10K_ERR_PARAM;
344 /* add bit to notify us if this is a set or clear operation */
346 vid |= FM10K_VLAN_CLEAR;
348 /* generate VLAN request */
349 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
350 fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_MULTICAST,
353 /* load onto outgoing mailbox */
354 return mbx->ops.enqueue_tx(hw, mbx, msg);
358 * fm10k_update_int_moderator_vf - Request update of interrupt moderator list
359 * @hw: pointer to hardware structure
361 * This function will issue a request to the PF to rescan our MSI-X table
362 * and to update the interrupt moderator linked list.
364 static void fm10k_update_int_moderator_vf(struct fm10k_hw *hw)
366 struct fm10k_mbx_info *mbx = &hw->mbx;
369 /* generate MSI-X request */
370 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MSIX);
372 /* load onto outgoing mailbox */
373 mbx->ops.enqueue_tx(hw, mbx, msg);
376 /* This structure defines the attibutes to be parsed below */
377 const struct fm10k_tlv_attr fm10k_lport_state_msg_attr[] = {
378 FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_DISABLE),
379 FM10K_TLV_ATTR_U8(FM10K_LPORT_STATE_MSG_XCAST_MODE),
380 FM10K_TLV_ATTR_BOOL(FM10K_LPORT_STATE_MSG_READY),
385 * fm10k_msg_lport_state_vf - Message handler for lport_state message from PF
386 * @hw: Pointer to hardware structure
387 * @results: pointer array containing parsed data
388 * @mbx: Pointer to mailbox information structure
390 * This handler is meant to capture the indication from the PF that we
391 * are ready to bring up the interface.
393 s32 fm10k_msg_lport_state_vf(struct fm10k_hw *hw, u32 **results,
394 struct fm10k_mbx_info *mbx)
396 hw->mac.dglort_map = !results[FM10K_LPORT_STATE_MSG_READY] ?
397 FM10K_DGLORTMAP_NONE : FM10K_DGLORTMAP_ZERO;
403 * fm10k_update_lport_state_vf - Update device state in lower device
404 * @hw: pointer to the HW structure
406 * @count: number of logical ports to enable - unused (always 1)
407 * @enable: boolean value indicating if this is an enable or disable request
409 * Notify the lower device of a state change. If the lower device is
410 * enabled we can add filters, if it is disabled all filters for this
411 * logical port are flushed.
413 static s32 fm10k_update_lport_state_vf(struct fm10k_hw *hw, u16 glort,
414 u16 count, bool enable)
416 struct fm10k_mbx_info *mbx = &hw->mbx;
419 /* reset glort mask 0 as we have to wait to be enabled */
420 hw->mac.dglort_map = FM10K_DGLORTMAP_NONE;
422 /* generate port state request */
423 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
425 fm10k_tlv_attr_put_bool(msg, FM10K_LPORT_STATE_MSG_DISABLE);
427 /* load onto outgoing mailbox */
428 return mbx->ops.enqueue_tx(hw, mbx, msg);
432 * fm10k_update_xcast_mode_vf - Request update of multicast mode
433 * @hw: pointer to hardware structure
435 * @mode: integer value indicating mode being requested
437 * This function will attempt to request a higher mode for the port
438 * so that it can enable either multicast, multicast promiscuous, or
439 * promiscuous mode of operation.
441 static s32 fm10k_update_xcast_mode_vf(struct fm10k_hw *hw, u16 glort, u8 mode)
443 struct fm10k_mbx_info *mbx = &hw->mbx;
446 if (mode > FM10K_XCAST_MODE_NONE)
447 return FM10K_ERR_PARAM;
449 /* generate message requesting to change xcast mode */
450 fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
451 fm10k_tlv_attr_put_u8(msg, FM10K_LPORT_STATE_MSG_XCAST_MODE, mode);
453 /* load onto outgoing mailbox */
454 return mbx->ops.enqueue_tx(hw, mbx, msg);
458 * fm10k_update_hw_stats_vf - Updates hardware related statistics of VF
459 * @hw: pointer to hardware structure
460 * @stats: pointer to statistics structure
462 * This function collects and aggregates per queue hardware statistics.
464 static void fm10k_update_hw_stats_vf(struct fm10k_hw *hw,
465 struct fm10k_hw_stats *stats)
467 fm10k_update_hw_stats_q(hw, stats->q, 0, hw->mac.max_queues);
471 * fm10k_rebind_hw_stats_vf - Resets base for hardware statistics of VF
472 * @hw: pointer to hardware structure
473 * @stats: pointer to the stats structure to update
475 * This function resets the base for queue hardware statistics.
477 static void fm10k_rebind_hw_stats_vf(struct fm10k_hw *hw,
478 struct fm10k_hw_stats *stats)
480 /* Unbind Queue Statistics */
481 fm10k_unbind_hw_stats_q(stats->q, 0, hw->mac.max_queues);
483 /* Reinitialize bases for all stats */
484 fm10k_update_hw_stats_vf(hw, stats);
488 * fm10k_configure_dglort_map_vf - Configures GLORT entry and queues
489 * @hw: pointer to hardware structure
490 * @dglort: pointer to dglort configuration structure
492 * Reads the configuration structure contained in dglort_cfg and uses
493 * that information to then populate a DGLORTMAP/DEC entry and the queues
494 * to which it has been assigned.
496 static s32 fm10k_configure_dglort_map_vf(struct fm10k_hw *hw,
497 struct fm10k_dglort_cfg *dglort)
499 /* verify the dglort pointer */
501 return FM10K_ERR_PARAM;
503 /* stub for now until we determine correct message for this */
508 static const struct fm10k_msg_data fm10k_msg_data_vf[] = {
509 FM10K_TLV_MSG_TEST_HANDLER(fm10k_tlv_msg_test),
510 FM10K_VF_MSG_MAC_VLAN_HANDLER(fm10k_msg_mac_vlan_vf),
511 FM10K_VF_MSG_LPORT_STATE_HANDLER(fm10k_msg_lport_state_vf),
512 FM10K_TLV_MSG_ERROR_HANDLER(fm10k_tlv_msg_error),
515 static const struct fm10k_mac_ops mac_ops_vf = {
516 .get_bus_info = fm10k_get_bus_info_generic,
517 .reset_hw = fm10k_reset_hw_vf,
518 .init_hw = fm10k_init_hw_vf,
519 .start_hw = fm10k_start_hw_generic,
520 .stop_hw = fm10k_stop_hw_vf,
521 .update_vlan = fm10k_update_vlan_vf,
522 .read_mac_addr = fm10k_read_mac_addr_vf,
523 .update_uc_addr = fm10k_update_uc_addr_vf,
524 .update_mc_addr = fm10k_update_mc_addr_vf,
525 .update_xcast_mode = fm10k_update_xcast_mode_vf,
526 .update_int_moderator = fm10k_update_int_moderator_vf,
527 .update_lport_state = fm10k_update_lport_state_vf,
528 .update_hw_stats = fm10k_update_hw_stats_vf,
529 .rebind_hw_stats = fm10k_rebind_hw_stats_vf,
530 .configure_dglort_map = fm10k_configure_dglort_map_vf,
531 .get_host_state = fm10k_get_host_state_generic,
534 static s32 fm10k_get_invariants_vf(struct fm10k_hw *hw)
536 fm10k_get_invariants_generic(hw);
538 return fm10k_pfvf_mbx_init(hw, &hw->mbx, fm10k_msg_data_vf, 0);
541 const struct fm10k_info fm10k_vf_info = {
543 .get_invariants = fm10k_get_invariants_vf,
544 .mac_ops = &mac_ops_vf,