1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2019 Intel Corporation. */
3 
4 #include "fm10k_pf.h"
5 #include "fm10k_vf.h"
6 
7 /**
8  *  fm10k_reset_hw_pf - PF hardware reset
9  *  @hw: pointer to hardware structure
10  *
11  *  This function should return the hardware to a state similar to the
12  *  one it is in after being powered on.
13  **/
14 static s32 fm10k_reset_hw_pf(struct fm10k_hw *hw)
15 {
16 	s32 err;
17 	u32 reg;
18 	u16 i;
19 
20 	/* Disable interrupts */
21 	fm10k_write_reg(hw, FM10K_EIMR, FM10K_EIMR_DISABLE(ALL));
22 
23 	/* Lock ITR2 reg 0 into itself and disable interrupt moderation */
24 	fm10k_write_reg(hw, FM10K_ITR2(0), 0);
25 	fm10k_write_reg(hw, FM10K_INT_CTRL, 0);
26 
27 	/* We assume here Tx and Rx queue 0 are owned by the PF */
28 
29 	/* Shut off VF access to their queues forcing them to queue 0 */
30 	for (i = 0; i < FM10K_TQMAP_TABLE_SIZE; i++) {
31 		fm10k_write_reg(hw, FM10K_TQMAP(i), 0);
32 		fm10k_write_reg(hw, FM10K_RQMAP(i), 0);
33 	}
34 
35 	/* shut down all rings */
36 	err = fm10k_disable_queues_generic(hw, FM10K_MAX_QUEUES);
37 	if (err == FM10K_ERR_REQUESTS_PENDING) {
38 		hw->mac.reset_while_pending++;
39 		goto force_reset;
40 	} else if (err) {
41 		return err;
42 	}
43 
44 	/* Verify that DMA is no longer active */
45 	reg = fm10k_read_reg(hw, FM10K_DMA_CTRL);
46 	if (reg & (FM10K_DMA_CTRL_TX_ACTIVE | FM10K_DMA_CTRL_RX_ACTIVE))
47 		return FM10K_ERR_DMA_PENDING;
48 
49 force_reset:
50 	/* Inititate data path reset */
51 	reg = FM10K_DMA_CTRL_DATAPATH_RESET;
52 	fm10k_write_reg(hw, FM10K_DMA_CTRL, reg);
53 
54 	/* Flush write and allow 100us for reset to complete */
55 	fm10k_write_flush(hw);
56 	udelay(FM10K_RESET_TIMEOUT);
57 
58 	/* Verify we made it out of reset */
59 	reg = fm10k_read_reg(hw, FM10K_IP);
60 	if (!(reg & FM10K_IP_NOTINRESET))
61 		return FM10K_ERR_RESET_FAILED;
62 
63 	return 0;
64 }
65 
66 /**
67  *  fm10k_is_ari_hierarchy_pf - Indicate ARI hierarchy support
68  *  @hw: pointer to hardware structure
69  *
70  *  Looks at the ARI hierarchy bit to determine whether ARI is supported or not.
71  **/
72 static bool fm10k_is_ari_hierarchy_pf(struct fm10k_hw *hw)
73 {
74 	u16 sriov_ctrl = fm10k_read_pci_cfg_word(hw, FM10K_PCIE_SRIOV_CTRL);
75 
76 	return !!(sriov_ctrl & FM10K_PCIE_SRIOV_CTRL_VFARI);
77 }
78 
79 /**
80  *  fm10k_init_hw_pf - PF hardware initialization
81  *  @hw: pointer to hardware structure
82  *
83  **/
84 static s32 fm10k_init_hw_pf(struct fm10k_hw *hw)
85 {
86 	u32 dma_ctrl, txqctl;
87 	u16 i;
88 
89 	/* Establish default VSI as valid */
90 	fm10k_write_reg(hw, FM10K_DGLORTDEC(fm10k_dglort_default), 0);
91 	fm10k_write_reg(hw, FM10K_DGLORTMAP(fm10k_dglort_default),
92 			FM10K_DGLORTMAP_ANY);
93 
94 	/* Invalidate all other GLORT entries */
95 	for (i = 1; i < FM10K_DGLORT_COUNT; i++)
96 		fm10k_write_reg(hw, FM10K_DGLORTMAP(i), FM10K_DGLORTMAP_NONE);
97 
98 	/* reset ITR2(0) to point to itself */
99 	fm10k_write_reg(hw, FM10K_ITR2(0), 0);
100 
101 	/* reset VF ITR2(0) to point to 0 avoid PF registers */
102 	fm10k_write_reg(hw, FM10K_ITR2(FM10K_ITR_REG_COUNT_PF), 0);
103 
104 	/* loop through all PF ITR2 registers pointing them to the previous */
105 	for (i = 1; i < FM10K_ITR_REG_COUNT_PF; i++)
106 		fm10k_write_reg(hw, FM10K_ITR2(i), i - 1);
107 
108 	/* Enable interrupt moderator if not already enabled */
109 	fm10k_write_reg(hw, FM10K_INT_CTRL, FM10K_INT_CTRL_ENABLEMODERATOR);
110 
111 	/* compute the default txqctl configuration */
112 	txqctl = FM10K_TXQCTL_PF | FM10K_TXQCTL_UNLIMITED_BW |
113 		 (hw->mac.default_vid << FM10K_TXQCTL_VID_SHIFT);
114 
115 	for (i = 0; i < FM10K_MAX_QUEUES; i++) {
116 		/* configure rings for 256 Queue / 32 Descriptor cache mode */
117 		fm10k_write_reg(hw, FM10K_TQDLOC(i),
118 				(i * FM10K_TQDLOC_BASE_32_DESC) |
119 				FM10K_TQDLOC_SIZE_32_DESC);
120 		fm10k_write_reg(hw, FM10K_TXQCTL(i), txqctl);
121 
122 		/* configure rings to provide TPH processing hints */
123 		fm10k_write_reg(hw, FM10K_TPH_TXCTRL(i),
124 				FM10K_TPH_TXCTRL_DESC_TPHEN |
125 				FM10K_TPH_TXCTRL_DESC_RROEN |
126 				FM10K_TPH_TXCTRL_DESC_WROEN |
127 				FM10K_TPH_TXCTRL_DATA_RROEN);
128 		fm10k_write_reg(hw, FM10K_TPH_RXCTRL(i),
129 				FM10K_TPH_RXCTRL_DESC_TPHEN |
130 				FM10K_TPH_RXCTRL_DESC_RROEN |
131 				FM10K_TPH_RXCTRL_DATA_WROEN |
132 				FM10K_TPH_RXCTRL_HDR_WROEN);
133 	}
134 
135 	/* set max hold interval to align with 1.024 usec in all modes and
136 	 * store ITR scale
137 	 */
138 	switch (hw->bus.speed) {
139 	case fm10k_bus_speed_2500:
140 		dma_ctrl = FM10K_DMA_CTRL_MAX_HOLD_1US_GEN1;
141 		hw->mac.itr_scale = FM10K_TDLEN_ITR_SCALE_GEN1;
142 		break;
143 	case fm10k_bus_speed_5000:
144 		dma_ctrl = FM10K_DMA_CTRL_MAX_HOLD_1US_GEN2;
145 		hw->mac.itr_scale = FM10K_TDLEN_ITR_SCALE_GEN2;
146 		break;
147 	case fm10k_bus_speed_8000:
148 		dma_ctrl = FM10K_DMA_CTRL_MAX_HOLD_1US_GEN3;
149 		hw->mac.itr_scale = FM10K_TDLEN_ITR_SCALE_GEN3;
150 		break;
151 	default:
152 		dma_ctrl = 0;
153 		/* just in case, assume Gen3 ITR scale */
154 		hw->mac.itr_scale = FM10K_TDLEN_ITR_SCALE_GEN3;
155 		break;
156 	}
157 
158 	/* Configure TSO flags */
159 	fm10k_write_reg(hw, FM10K_DTXTCPFLGL, FM10K_TSO_FLAGS_LOW);
160 	fm10k_write_reg(hw, FM10K_DTXTCPFLGH, FM10K_TSO_FLAGS_HI);
161 
162 	/* Enable DMA engine
163 	 * Set Rx Descriptor size to 32
164 	 * Set Minimum MSS to 64
165 	 * Set Maximum number of Rx queues to 256 / 32 Descriptor
166 	 */
167 	dma_ctrl |= FM10K_DMA_CTRL_TX_ENABLE | FM10K_DMA_CTRL_RX_ENABLE |
168 		    FM10K_DMA_CTRL_RX_DESC_SIZE | FM10K_DMA_CTRL_MINMSS_64 |
169 		    FM10K_DMA_CTRL_32_DESC;
170 
171 	fm10k_write_reg(hw, FM10K_DMA_CTRL, dma_ctrl);
172 
173 	/* record maximum queue count, we limit ourselves to 128 */
174 	hw->mac.max_queues = FM10K_MAX_QUEUES_PF;
175 
176 	/* We support either 64 VFs or 7 VFs depending on if we have ARI */
177 	hw->iov.total_vfs = fm10k_is_ari_hierarchy_pf(hw) ? 64 : 7;
178 
179 	return 0;
180 }
181 
182 /**
183  *  fm10k_update_vlan_pf - Update status of VLAN ID in VLAN filter table
184  *  @hw: pointer to hardware structure
185  *  @vid: VLAN ID to add to table
186  *  @vsi: Index indicating VF ID or PF ID in table
187  *  @set: Indicates if this is a set or clear operation
188  *
189  *  This function adds or removes the corresponding VLAN ID from the VLAN
190  *  filter table for the corresponding function.  In addition to the
191  *  standard set/clear that supports one bit a multi-bit write is
192  *  supported to set 64 bits at a time.
193  **/
194 static s32 fm10k_update_vlan_pf(struct fm10k_hw *hw, u32 vid, u8 vsi, bool set)
195 {
196 	u32 vlan_table, reg, mask, bit, len;
197 
198 	/* verify the VSI index is valid */
199 	if (vsi > FM10K_VLAN_TABLE_VSI_MAX)
200 		return FM10K_ERR_PARAM;
201 
202 	/* VLAN multi-bit write:
203 	 * The multi-bit write has several parts to it.
204 	 *               24              16               8               0
205 	 *  7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
206 	 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
207 	 * | RSVD0 |         Length        |C|RSVD0|        VLAN ID        |
208 	 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
209 	 *
210 	 * VLAN ID: Vlan Starting value
211 	 * RSVD0: Reserved section, must be 0
212 	 * C: Flag field, 0 is set, 1 is clear (Used in VF VLAN message)
213 	 * Length: Number of times to repeat the bit being set
214 	 */
215 	len = vid >> 16;
216 	vid = (vid << 17) >> 17;
217 
218 	/* verify the reserved 0 fields are 0 */
219 	if (len >= FM10K_VLAN_TABLE_VID_MAX || vid >= FM10K_VLAN_TABLE_VID_MAX)
220 		return FM10K_ERR_PARAM;
221 
222 	/* Loop through the table updating all required VLANs */
223 	for (reg = FM10K_VLAN_TABLE(vsi, vid / 32), bit = vid % 32;
224 	     len < FM10K_VLAN_TABLE_VID_MAX;
225 	     len -= 32 - bit, reg++, bit = 0) {
226 		/* record the initial state of the register */
227 		vlan_table = fm10k_read_reg(hw, reg);
228 
229 		/* truncate mask if we are at the start or end of the run */
230 		mask = (~(u32)0 >> ((len < 31) ? 31 - len : 0)) << bit;
231 
232 		/* make necessary modifications to the register */
233 		mask &= set ? ~vlan_table : vlan_table;
234 		if (mask)
235 			fm10k_write_reg(hw, reg, vlan_table ^ mask);
236 	}
237 
238 	return 0;
239 }
240 
241 /**
242  *  fm10k_read_mac_addr_pf - Read device MAC address
243  *  @hw: pointer to the HW structure
244  *
245  *  Reads the device MAC address from the SM_AREA and stores the value.
246  **/
247 static s32 fm10k_read_mac_addr_pf(struct fm10k_hw *hw)
248 {
249 	u8 perm_addr[ETH_ALEN];
250 	u32 serial_num;
251 
252 	serial_num = fm10k_read_reg(hw, FM10K_SM_AREA(1));
253 
254 	/* last byte should be all 1's */
255 	if ((~serial_num) << 24)
256 		return  FM10K_ERR_INVALID_MAC_ADDR;
257 
258 	perm_addr[0] = (u8)(serial_num >> 24);
259 	perm_addr[1] = (u8)(serial_num >> 16);
260 	perm_addr[2] = (u8)(serial_num >> 8);
261 
262 	serial_num = fm10k_read_reg(hw, FM10K_SM_AREA(0));
263 
264 	/* first byte should be all 1's */
265 	if ((~serial_num) >> 24)
266 		return  FM10K_ERR_INVALID_MAC_ADDR;
267 
268 	perm_addr[3] = (u8)(serial_num >> 16);
269 	perm_addr[4] = (u8)(serial_num >> 8);
270 	perm_addr[5] = (u8)(serial_num);
271 
272 	ether_addr_copy(hw->mac.perm_addr, perm_addr);
273 	ether_addr_copy(hw->mac.addr, perm_addr);
274 
275 	return 0;
276 }
277 
278 /**
279  *  fm10k_glort_valid_pf - Validate that the provided glort is valid
280  *  @hw: pointer to the HW structure
281  *  @glort: base glort to be validated
282  *
283  *  This function will return an error if the provided glort is invalid
284  **/
285 bool fm10k_glort_valid_pf(struct fm10k_hw *hw, u16 glort)
286 {
287 	glort &= hw->mac.dglort_map >> FM10K_DGLORTMAP_MASK_SHIFT;
288 
289 	return glort == (hw->mac.dglort_map & FM10K_DGLORTMAP_NONE);
290 }
291 
292 /**
293  *  fm10k_update_xc_addr_pf - Update device addresses
294  *  @hw: pointer to the HW structure
295  *  @glort: base resource tag for this request
296  *  @mac: MAC address to add/remove from table
297  *  @vid: VLAN ID to add/remove from table
298  *  @add: Indicates if this is an add or remove operation
299  *  @flags: flags field to indicate add and secure
300  *
301  *  This function generates a message to the Switch API requesting
302  *  that the given logical port add/remove the given L2 MAC/VLAN address.
303  **/
304 static s32 fm10k_update_xc_addr_pf(struct fm10k_hw *hw, u16 glort,
305 				   const u8 *mac, u16 vid, bool add, u8 flags)
306 {
307 	struct fm10k_mbx_info *mbx = &hw->mbx;
308 	struct fm10k_mac_update mac_update;
309 	u32 msg[5];
310 
311 	/* clear set bit from VLAN ID */
312 	vid &= ~FM10K_VLAN_CLEAR;
313 
314 	/* if glort or VLAN are not valid return error */
315 	if (!fm10k_glort_valid_pf(hw, glort) || vid >= FM10K_VLAN_TABLE_VID_MAX)
316 		return FM10K_ERR_PARAM;
317 
318 	/* record fields */
319 	mac_update.mac_lower = cpu_to_le32(((u32)mac[2] << 24) |
320 						 ((u32)mac[3] << 16) |
321 						 ((u32)mac[4] << 8) |
322 						 ((u32)mac[5]));
323 	mac_update.mac_upper = cpu_to_le16(((u16)mac[0] << 8) |
324 					   ((u16)mac[1]));
325 	mac_update.vlan = cpu_to_le16(vid);
326 	mac_update.glort = cpu_to_le16(glort);
327 	mac_update.action = add ? 0 : 1;
328 	mac_update.flags = flags;
329 
330 	/* populate mac_update fields */
331 	fm10k_tlv_msg_init(msg, FM10K_PF_MSG_ID_UPDATE_MAC_FWD_RULE);
332 	fm10k_tlv_attr_put_le_struct(msg, FM10K_PF_ATTR_ID_MAC_UPDATE,
333 				     &mac_update, sizeof(mac_update));
334 
335 	/* load onto outgoing mailbox */
336 	return mbx->ops.enqueue_tx(hw, mbx, msg);
337 }
338 
339 /**
340  *  fm10k_update_uc_addr_pf - Update device unicast addresses
341  *  @hw: pointer to the HW structure
342  *  @glort: base resource tag for this request
343  *  @mac: MAC address to add/remove from table
344  *  @vid: VLAN ID to add/remove from table
345  *  @add: Indicates if this is an add or remove operation
346  *  @flags: flags field to indicate add and secure
347  *
348  *  This function is used to add or remove unicast addresses for
349  *  the PF.
350  **/
351 static s32 fm10k_update_uc_addr_pf(struct fm10k_hw *hw, u16 glort,
352 				   const u8 *mac, u16 vid, bool add, u8 flags)
353 {
354 	/* verify MAC address is valid */
355 	if (!is_valid_ether_addr(mac))
356 		return FM10K_ERR_PARAM;
357 
358 	return fm10k_update_xc_addr_pf(hw, glort, mac, vid, add, flags);
359 }
360 
361 /**
362  *  fm10k_update_mc_addr_pf - Update device multicast addresses
363  *  @hw: pointer to the HW structure
364  *  @glort: base resource tag for this request
365  *  @mac: MAC address to add/remove from table
366  *  @vid: VLAN ID to add/remove from table
367  *  @add: Indicates if this is an add or remove operation
368  *
369  *  This function is used to add or remove multicast MAC addresses for
370  *  the PF.
371  **/
372 static s32 fm10k_update_mc_addr_pf(struct fm10k_hw *hw, u16 glort,
373 				   const u8 *mac, u16 vid, bool add)
374 {
375 	/* verify multicast address is valid */
376 	if (!is_multicast_ether_addr(mac))
377 		return FM10K_ERR_PARAM;
378 
379 	return fm10k_update_xc_addr_pf(hw, glort, mac, vid, add, 0);
380 }
381 
382 /**
383  *  fm10k_update_xcast_mode_pf - Request update of multicast mode
384  *  @hw: pointer to hardware structure
385  *  @glort: base resource tag for this request
386  *  @mode: integer value indicating mode being requested
387  *
388  *  This function will attempt to request a higher mode for the port
389  *  so that it can enable either multicast, multicast promiscuous, or
390  *  promiscuous mode of operation.
391  **/
392 static s32 fm10k_update_xcast_mode_pf(struct fm10k_hw *hw, u16 glort, u8 mode)
393 {
394 	struct fm10k_mbx_info *mbx = &hw->mbx;
395 	u32 msg[3], xcast_mode;
396 
397 	if (mode > FM10K_XCAST_MODE_NONE)
398 		return FM10K_ERR_PARAM;
399 
400 	/* if glort is not valid return error */
401 	if (!fm10k_glort_valid_pf(hw, glort))
402 		return FM10K_ERR_PARAM;
403 
404 	/* write xcast mode as a single u32 value,
405 	 * lower 16 bits: glort
406 	 * upper 16 bits: mode
407 	 */
408 	xcast_mode = ((u32)mode << 16) | glort;
409 
410 	/* generate message requesting to change xcast mode */
411 	fm10k_tlv_msg_init(msg, FM10K_PF_MSG_ID_XCAST_MODES);
412 	fm10k_tlv_attr_put_u32(msg, FM10K_PF_ATTR_ID_XCAST_MODE, xcast_mode);
413 
414 	/* load onto outgoing mailbox */
415 	return mbx->ops.enqueue_tx(hw, mbx, msg);
416 }
417 
418 /**
419  *  fm10k_update_int_moderator_pf - Update interrupt moderator linked list
420  *  @hw: pointer to hardware structure
421  *
422  *  This function walks through the MSI-X vector table to determine the
423  *  number of active interrupts and based on that information updates the
424  *  interrupt moderator linked list.
425  **/
426 static void fm10k_update_int_moderator_pf(struct fm10k_hw *hw)
427 {
428 	u32 i;
429 
430 	/* Disable interrupt moderator */
431 	fm10k_write_reg(hw, FM10K_INT_CTRL, 0);
432 
433 	/* loop through PF from last to first looking enabled vectors */
434 	for (i = FM10K_ITR_REG_COUNT_PF - 1; i; i--) {
435 		if (!fm10k_read_reg(hw, FM10K_MSIX_VECTOR_MASK(i)))
436 			break;
437 	}
438 
439 	/* always reset VFITR2[0] to point to last enabled PF vector */
440 	fm10k_write_reg(hw, FM10K_ITR2(FM10K_ITR_REG_COUNT_PF), i);
441 
442 	/* reset ITR2[0] to point to last enabled PF vector */
443 	if (!hw->iov.num_vfs)
444 		fm10k_write_reg(hw, FM10K_ITR2(0), i);
445 
446 	/* Enable interrupt moderator */
447 	fm10k_write_reg(hw, FM10K_INT_CTRL, FM10K_INT_CTRL_ENABLEMODERATOR);
448 }
449 
450 /**
451  *  fm10k_update_lport_state_pf - Notify the switch of a change in port state
452  *  @hw: pointer to the HW structure
453  *  @glort: base resource tag for this request
454  *  @count: number of logical ports being updated
455  *  @enable: boolean value indicating enable or disable
456  *
457  *  This function is used to add/remove a logical port from the switch.
458  **/
459 static s32 fm10k_update_lport_state_pf(struct fm10k_hw *hw, u16 glort,
460 				       u16 count, bool enable)
461 {
462 	struct fm10k_mbx_info *mbx = &hw->mbx;
463 	u32 msg[3], lport_msg;
464 
465 	/* do nothing if we are being asked to create or destroy 0 ports */
466 	if (!count)
467 		return 0;
468 
469 	/* if glort is not valid return error */
470 	if (!fm10k_glort_valid_pf(hw, glort))
471 		return FM10K_ERR_PARAM;
472 
473 	/* reset multicast mode if deleting lport */
474 	if (!enable)
475 		fm10k_update_xcast_mode_pf(hw, glort, FM10K_XCAST_MODE_NONE);
476 
477 	/* construct the lport message from the 2 pieces of data we have */
478 	lport_msg = ((u32)count << 16) | glort;
479 
480 	/* generate lport create/delete message */
481 	fm10k_tlv_msg_init(msg, enable ? FM10K_PF_MSG_ID_LPORT_CREATE :
482 					 FM10K_PF_MSG_ID_LPORT_DELETE);
483 	fm10k_tlv_attr_put_u32(msg, FM10K_PF_ATTR_ID_PORT, lport_msg);
484 
485 	/* load onto outgoing mailbox */
486 	return mbx->ops.enqueue_tx(hw, mbx, msg);
487 }
488 
489 /**
490  *  fm10k_configure_dglort_map_pf - Configures GLORT entry and queues
491  *  @hw: pointer to hardware structure
492  *  @dglort: pointer to dglort configuration structure
493  *
494  *  Reads the configuration structure contained in dglort_cfg and uses
495  *  that information to then populate a DGLORTMAP/DEC entry and the queues
496  *  to which it has been assigned.
497  **/
498 static s32 fm10k_configure_dglort_map_pf(struct fm10k_hw *hw,
499 					 struct fm10k_dglort_cfg *dglort)
500 {
501 	u16 glort, queue_count, vsi_count, pc_count;
502 	u16 vsi, queue, pc, q_idx;
503 	u32 txqctl, dglortdec, dglortmap;
504 
505 	/* verify the dglort pointer */
506 	if (!dglort)
507 		return FM10K_ERR_PARAM;
508 
509 	/* verify the dglort values */
510 	if ((dglort->idx > 7) || (dglort->rss_l > 7) || (dglort->pc_l > 3) ||
511 	    (dglort->vsi_l > 6) || (dglort->vsi_b > 64) ||
512 	    (dglort->queue_l > 8) || (dglort->queue_b >= 256))
513 		return FM10K_ERR_PARAM;
514 
515 	/* determine count of VSIs and queues */
516 	queue_count = BIT(dglort->rss_l + dglort->pc_l);
517 	vsi_count = BIT(dglort->vsi_l + dglort->queue_l);
518 	glort = dglort->glort;
519 	q_idx = dglort->queue_b;
520 
521 	/* configure SGLORT for queues */
522 	for (vsi = 0; vsi < vsi_count; vsi++, glort++) {
523 		for (queue = 0; queue < queue_count; queue++, q_idx++) {
524 			if (q_idx >= FM10K_MAX_QUEUES)
525 				break;
526 
527 			fm10k_write_reg(hw, FM10K_TX_SGLORT(q_idx), glort);
528 			fm10k_write_reg(hw, FM10K_RX_SGLORT(q_idx), glort);
529 		}
530 	}
531 
532 	/* determine count of PCs and queues */
533 	queue_count = BIT(dglort->queue_l + dglort->rss_l + dglort->vsi_l);
534 	pc_count = BIT(dglort->pc_l);
535 
536 	/* configure PC for Tx queues */
537 	for (pc = 0; pc < pc_count; pc++) {
538 		q_idx = pc + dglort->queue_b;
539 		for (queue = 0; queue < queue_count; queue++) {
540 			if (q_idx >= FM10K_MAX_QUEUES)
541 				break;
542 
543 			txqctl = fm10k_read_reg(hw, FM10K_TXQCTL(q_idx));
544 			txqctl &= ~FM10K_TXQCTL_PC_MASK;
545 			txqctl |= pc << FM10K_TXQCTL_PC_SHIFT;
546 			fm10k_write_reg(hw, FM10K_TXQCTL(q_idx), txqctl);
547 
548 			q_idx += pc_count;
549 		}
550 	}
551 
552 	/* configure DGLORTDEC */
553 	dglortdec = ((u32)(dglort->rss_l) << FM10K_DGLORTDEC_RSSLENGTH_SHIFT) |
554 		    ((u32)(dglort->queue_b) << FM10K_DGLORTDEC_QBASE_SHIFT) |
555 		    ((u32)(dglort->pc_l) << FM10K_DGLORTDEC_PCLENGTH_SHIFT) |
556 		    ((u32)(dglort->vsi_b) << FM10K_DGLORTDEC_VSIBASE_SHIFT) |
557 		    ((u32)(dglort->vsi_l) << FM10K_DGLORTDEC_VSILENGTH_SHIFT) |
558 		    ((u32)(dglort->queue_l));
559 	if (dglort->inner_rss)
560 		dglortdec |=  FM10K_DGLORTDEC_INNERRSS_ENABLE;
561 
562 	/* configure DGLORTMAP */
563 	dglortmap = (dglort->idx == fm10k_dglort_default) ?
564 			FM10K_DGLORTMAP_ANY : FM10K_DGLORTMAP_ZERO;
565 	dglortmap <<= dglort->vsi_l + dglort->queue_l + dglort->shared_l;
566 	dglortmap |= dglort->glort;
567 
568 	/* write values to hardware */
569 	fm10k_write_reg(hw, FM10K_DGLORTDEC(dglort->idx), dglortdec);
570 	fm10k_write_reg(hw, FM10K_DGLORTMAP(dglort->idx), dglortmap);
571 
572 	return 0;
573 }
574 
575 u16 fm10k_queues_per_pool(struct fm10k_hw *hw)
576 {
577 	u16 num_pools = hw->iov.num_pools;
578 
579 	return (num_pools > 32) ? 2 : (num_pools > 16) ? 4 : (num_pools > 8) ?
580 	       8 : FM10K_MAX_QUEUES_POOL;
581 }
582 
583 u16 fm10k_vf_queue_index(struct fm10k_hw *hw, u16 vf_idx)
584 {
585 	u16 num_vfs = hw->iov.num_vfs;
586 	u16 vf_q_idx = FM10K_MAX_QUEUES;
587 
588 	vf_q_idx -= fm10k_queues_per_pool(hw) * (num_vfs - vf_idx);
589 
590 	return vf_q_idx;
591 }
592 
593 static u16 fm10k_vectors_per_pool(struct fm10k_hw *hw)
594 {
595 	u16 num_pools = hw->iov.num_pools;
596 
597 	return (num_pools > 32) ? 8 : (num_pools > 16) ? 16 :
598 	       FM10K_MAX_VECTORS_POOL;
599 }
600 
601 static u16 fm10k_vf_vector_index(struct fm10k_hw *hw, u16 vf_idx)
602 {
603 	u16 vf_v_idx = FM10K_MAX_VECTORS_PF;
604 
605 	vf_v_idx += fm10k_vectors_per_pool(hw) * vf_idx;
606 
607 	return vf_v_idx;
608 }
609 
610 /**
611  *  fm10k_iov_assign_resources_pf - Assign pool resources for virtualization
612  *  @hw: pointer to the HW structure
613  *  @num_vfs: number of VFs to be allocated
614  *  @num_pools: number of virtualization pools to be allocated
615  *
616  *  Allocates queues and traffic classes to virtualization entities to prepare
617  *  the PF for SR-IOV and VMDq
618  **/
619 static s32 fm10k_iov_assign_resources_pf(struct fm10k_hw *hw, u16 num_vfs,
620 					 u16 num_pools)
621 {
622 	u16 qmap_stride, qpp, vpp, vf_q_idx, vf_q_idx0, qmap_idx;
623 	u32 vid = hw->mac.default_vid << FM10K_TXQCTL_VID_SHIFT;
624 	int i, j;
625 
626 	/* hardware only supports up to 64 pools */
627 	if (num_pools > 64)
628 		return FM10K_ERR_PARAM;
629 
630 	/* the number of VFs cannot exceed the number of pools */
631 	if ((num_vfs > num_pools) || (num_vfs > hw->iov.total_vfs))
632 		return FM10K_ERR_PARAM;
633 
634 	/* record number of virtualization entities */
635 	hw->iov.num_vfs = num_vfs;
636 	hw->iov.num_pools = num_pools;
637 
638 	/* determine qmap offsets and counts */
639 	qmap_stride = (num_vfs > 8) ? 32 : 256;
640 	qpp = fm10k_queues_per_pool(hw);
641 	vpp = fm10k_vectors_per_pool(hw);
642 
643 	/* calculate starting index for queues */
644 	vf_q_idx = fm10k_vf_queue_index(hw, 0);
645 	qmap_idx = 0;
646 
647 	/* establish TCs with -1 credits and no quanta to prevent transmit */
648 	for (i = 0; i < num_vfs; i++) {
649 		fm10k_write_reg(hw, FM10K_TC_MAXCREDIT(i), 0);
650 		fm10k_write_reg(hw, FM10K_TC_RATE(i), 0);
651 		fm10k_write_reg(hw, FM10K_TC_CREDIT(i),
652 				FM10K_TC_CREDIT_CREDIT_MASK);
653 	}
654 
655 	/* zero out all mbmem registers */
656 	for (i = FM10K_VFMBMEM_LEN * num_vfs; i--;)
657 		fm10k_write_reg(hw, FM10K_MBMEM(i), 0);
658 
659 	/* clear event notification of VF FLR */
660 	fm10k_write_reg(hw, FM10K_PFVFLREC(0), ~0);
661 	fm10k_write_reg(hw, FM10K_PFVFLREC(1), ~0);
662 
663 	/* loop through unallocated rings assigning them back to PF */
664 	for (i = FM10K_MAX_QUEUES_PF; i < vf_q_idx; i++) {
665 		fm10k_write_reg(hw, FM10K_TXDCTL(i), 0);
666 		fm10k_write_reg(hw, FM10K_TXQCTL(i), FM10K_TXQCTL_PF |
667 				FM10K_TXQCTL_UNLIMITED_BW | vid);
668 		fm10k_write_reg(hw, FM10K_RXQCTL(i), FM10K_RXQCTL_PF);
669 	}
670 
671 	/* PF should have already updated VFITR2[0] */
672 
673 	/* update all ITR registers to flow to VFITR2[0] */
674 	for (i = FM10K_ITR_REG_COUNT_PF + 1; i < FM10K_ITR_REG_COUNT; i++) {
675 		if (!(i & (vpp - 1)))
676 			fm10k_write_reg(hw, FM10K_ITR2(i), i - vpp);
677 		else
678 			fm10k_write_reg(hw, FM10K_ITR2(i), i - 1);
679 	}
680 
681 	/* update PF ITR2[0] to reference the last vector */
682 	fm10k_write_reg(hw, FM10K_ITR2(0),
683 			fm10k_vf_vector_index(hw, num_vfs - 1));
684 
685 	/* loop through rings populating rings and TCs */
686 	for (i = 0; i < num_vfs; i++) {
687 		/* record index for VF queue 0 for use in end of loop */
688 		vf_q_idx0 = vf_q_idx;
689 
690 		for (j = 0; j < qpp; j++, qmap_idx++, vf_q_idx++) {
691 			/* assign VF and locked TC to queues */
692 			fm10k_write_reg(hw, FM10K_TXDCTL(vf_q_idx), 0);
693 			fm10k_write_reg(hw, FM10K_TXQCTL(vf_q_idx),
694 					(i << FM10K_TXQCTL_TC_SHIFT) | i |
695 					FM10K_TXQCTL_VF | vid);
696 			fm10k_write_reg(hw, FM10K_RXDCTL(vf_q_idx),
697 					FM10K_RXDCTL_WRITE_BACK_MIN_DELAY |
698 					FM10K_RXDCTL_DROP_ON_EMPTY);
699 			fm10k_write_reg(hw, FM10K_RXQCTL(vf_q_idx),
700 					(i << FM10K_RXQCTL_VF_SHIFT) |
701 					FM10K_RXQCTL_VF);
702 
703 			/* map queue pair to VF */
704 			fm10k_write_reg(hw, FM10K_TQMAP(qmap_idx), vf_q_idx);
705 			fm10k_write_reg(hw, FM10K_RQMAP(qmap_idx), vf_q_idx);
706 		}
707 
708 		/* repeat the first ring for all of the remaining VF rings */
709 		for (; j < qmap_stride; j++, qmap_idx++) {
710 			fm10k_write_reg(hw, FM10K_TQMAP(qmap_idx), vf_q_idx0);
711 			fm10k_write_reg(hw, FM10K_RQMAP(qmap_idx), vf_q_idx0);
712 		}
713 	}
714 
715 	/* loop through remaining indexes assigning all to queue 0 */
716 	while (qmap_idx < FM10K_TQMAP_TABLE_SIZE) {
717 		fm10k_write_reg(hw, FM10K_TQMAP(qmap_idx), 0);
718 		fm10k_write_reg(hw, FM10K_RQMAP(qmap_idx), 0);
719 		qmap_idx++;
720 	}
721 
722 	return 0;
723 }
724 
725 /**
726  *  fm10k_iov_configure_tc_pf - Configure the shaping group for VF
727  *  @hw: pointer to the HW structure
728  *  @vf_idx: index of VF receiving GLORT
729  *  @rate: Rate indicated in Mb/s
730  *
731  *  Configured the TC for a given VF to allow only up to a given number
732  *  of Mb/s of outgoing Tx throughput.
733  **/
734 static s32 fm10k_iov_configure_tc_pf(struct fm10k_hw *hw, u16 vf_idx, int rate)
735 {
736 	/* configure defaults */
737 	u32 interval = FM10K_TC_RATE_INTERVAL_4US_GEN3;
738 	u32 tc_rate = FM10K_TC_RATE_QUANTA_MASK;
739 
740 	/* verify vf is in range */
741 	if (vf_idx >= hw->iov.num_vfs)
742 		return FM10K_ERR_PARAM;
743 
744 	/* set interval to align with 4.096 usec in all modes */
745 	switch (hw->bus.speed) {
746 	case fm10k_bus_speed_2500:
747 		interval = FM10K_TC_RATE_INTERVAL_4US_GEN1;
748 		break;
749 	case fm10k_bus_speed_5000:
750 		interval = FM10K_TC_RATE_INTERVAL_4US_GEN2;
751 		break;
752 	default:
753 		break;
754 	}
755 
756 	if (rate) {
757 		if (rate > FM10K_VF_TC_MAX || rate < FM10K_VF_TC_MIN)
758 			return FM10K_ERR_PARAM;
759 
760 		/* The quanta is measured in Bytes per 4.096 or 8.192 usec
761 		 * The rate is provided in Mbits per second
762 		 * To tralslate from rate to quanta we need to multiply the
763 		 * rate by 8.192 usec and divide by 8 bits/byte.  To avoid
764 		 * dealing with floating point we can round the values up
765 		 * to the nearest whole number ratio which gives us 128 / 125.
766 		 */
767 		tc_rate = (rate * 128) / 125;
768 
769 		/* try to keep the rate limiting accurate by increasing
770 		 * the number of credits and interval for rates less than 4Gb/s
771 		 */
772 		if (rate < 4000)
773 			interval <<= 1;
774 		else
775 			tc_rate >>= 1;
776 	}
777 
778 	/* update rate limiter with new values */
779 	fm10k_write_reg(hw, FM10K_TC_RATE(vf_idx), tc_rate | interval);
780 	fm10k_write_reg(hw, FM10K_TC_MAXCREDIT(vf_idx), FM10K_TC_MAXCREDIT_64K);
781 	fm10k_write_reg(hw, FM10K_TC_CREDIT(vf_idx), FM10K_TC_MAXCREDIT_64K);
782 
783 	return 0;
784 }
785 
786 /**
787  *  fm10k_iov_assign_int_moderator_pf - Add VF interrupts to moderator list
788  *  @hw: pointer to the HW structure
789  *  @vf_idx: index of VF receiving GLORT
790  *
791  *  Update the interrupt moderator linked list to include any MSI-X
792  *  interrupts which the VF has enabled in the MSI-X vector table.
793  **/
794 static s32 fm10k_iov_assign_int_moderator_pf(struct fm10k_hw *hw, u16 vf_idx)
795 {
796 	u16 vf_v_idx, vf_v_limit, i;
797 
798 	/* verify vf is in range */
799 	if (vf_idx >= hw->iov.num_vfs)
800 		return FM10K_ERR_PARAM;
801 
802 	/* determine vector offset and count */
803 	vf_v_idx = fm10k_vf_vector_index(hw, vf_idx);
804 	vf_v_limit = vf_v_idx + fm10k_vectors_per_pool(hw);
805 
806 	/* search for first vector that is not masked */
807 	for (i = vf_v_limit - 1; i > vf_v_idx; i--) {
808 		if (!fm10k_read_reg(hw, FM10K_MSIX_VECTOR_MASK(i)))
809 			break;
810 	}
811 
812 	/* reset linked list so it now includes our active vectors */
813 	if (vf_idx == (hw->iov.num_vfs - 1))
814 		fm10k_write_reg(hw, FM10K_ITR2(0), i);
815 	else
816 		fm10k_write_reg(hw, FM10K_ITR2(vf_v_limit), i);
817 
818 	return 0;
819 }
820 
821 /**
822  *  fm10k_iov_assign_default_mac_vlan_pf - Assign a MAC and VLAN to VF
823  *  @hw: pointer to the HW structure
824  *  @vf_info: pointer to VF information structure
825  *
826  *  Assign a MAC address and default VLAN to a VF and notify it of the update
827  **/
828 static s32 fm10k_iov_assign_default_mac_vlan_pf(struct fm10k_hw *hw,
829 						struct fm10k_vf_info *vf_info)
830 {
831 	u16 qmap_stride, queues_per_pool, vf_q_idx, timeout, qmap_idx, i;
832 	u32 msg[4], txdctl, txqctl, tdbal = 0, tdbah = 0;
833 	s32 err = 0;
834 	u16 vf_idx, vf_vid;
835 
836 	/* verify vf is in range */
837 	if (!vf_info || vf_info->vf_idx >= hw->iov.num_vfs)
838 		return FM10K_ERR_PARAM;
839 
840 	/* determine qmap offsets and counts */
841 	qmap_stride = (hw->iov.num_vfs > 8) ? 32 : 256;
842 	queues_per_pool = fm10k_queues_per_pool(hw);
843 
844 	/* calculate starting index for queues */
845 	vf_idx = vf_info->vf_idx;
846 	vf_q_idx = fm10k_vf_queue_index(hw, vf_idx);
847 	qmap_idx = qmap_stride * vf_idx;
848 
849 	/* Determine correct default VLAN ID. The FM10K_VLAN_OVERRIDE bit is
850 	 * used here to indicate to the VF that it will not have privilege to
851 	 * write VLAN_TABLE. All policy is enforced on the PF but this allows
852 	 * the VF to correctly report errors to userspace requests.
853 	 */
854 	if (vf_info->pf_vid)
855 		vf_vid = vf_info->pf_vid | FM10K_VLAN_OVERRIDE;
856 	else
857 		vf_vid = vf_info->sw_vid;
858 
859 	/* generate MAC_ADDR request */
860 	fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_MAC_VLAN);
861 	fm10k_tlv_attr_put_mac_vlan(msg, FM10K_MAC_VLAN_MSG_DEFAULT_MAC,
862 				    vf_info->mac, vf_vid);
863 
864 	/* Configure Queue control register with new VLAN ID. The TXQCTL
865 	 * register is RO from the VF, so the PF must do this even in the
866 	 * case of notifying the VF of a new VID via the mailbox.
867 	 */
868 	txqctl = ((u32)vf_vid << FM10K_TXQCTL_VID_SHIFT) &
869 		 FM10K_TXQCTL_VID_MASK;
870 	txqctl |= (vf_idx << FM10K_TXQCTL_TC_SHIFT) |
871 		  FM10K_TXQCTL_VF | vf_idx;
872 
873 	for (i = 0; i < queues_per_pool; i++)
874 		fm10k_write_reg(hw, FM10K_TXQCTL(vf_q_idx + i), txqctl);
875 
876 	/* try loading a message onto outgoing mailbox first */
877 	if (vf_info->mbx.ops.enqueue_tx) {
878 		err = vf_info->mbx.ops.enqueue_tx(hw, &vf_info->mbx, msg);
879 		if (err != FM10K_MBX_ERR_NO_MBX)
880 			return err;
881 		err = 0;
882 	}
883 
884 	/* If we aren't connected to a mailbox, this is most likely because
885 	 * the VF driver is not running. It should thus be safe to re-map
886 	 * queues and use the registers to pass the MAC address so that the VF
887 	 * driver gets correct information during its initialization.
888 	 */
889 
890 	/* MAP Tx queue back to 0 temporarily, and disable it */
891 	fm10k_write_reg(hw, FM10K_TQMAP(qmap_idx), 0);
892 	fm10k_write_reg(hw, FM10K_TXDCTL(vf_q_idx), 0);
893 
894 	/* verify ring has disabled before modifying base address registers */
895 	txdctl = fm10k_read_reg(hw, FM10K_TXDCTL(vf_q_idx));
896 	for (timeout = 0; txdctl & FM10K_TXDCTL_ENABLE; timeout++) {
897 		/* limit ourselves to a 1ms timeout */
898 		if (timeout == 10) {
899 			err = FM10K_ERR_DMA_PENDING;
900 			goto err_out;
901 		}
902 
903 		usleep_range(100, 200);
904 		txdctl = fm10k_read_reg(hw, FM10K_TXDCTL(vf_q_idx));
905 	}
906 
907 	/* Update base address registers to contain MAC address */
908 	if (is_valid_ether_addr(vf_info->mac)) {
909 		tdbal = (((u32)vf_info->mac[3]) << 24) |
910 			(((u32)vf_info->mac[4]) << 16) |
911 			(((u32)vf_info->mac[5]) << 8);
912 
913 		tdbah = (((u32)0xFF)	        << 24) |
914 			(((u32)vf_info->mac[0]) << 16) |
915 			(((u32)vf_info->mac[1]) << 8) |
916 			((u32)vf_info->mac[2]);
917 	}
918 
919 	/* Record the base address into queue 0 */
920 	fm10k_write_reg(hw, FM10K_TDBAL(vf_q_idx), tdbal);
921 	fm10k_write_reg(hw, FM10K_TDBAH(vf_q_idx), tdbah);
922 
923 	/* Provide the VF the ITR scale, using software-defined fields in TDLEN
924 	 * to pass the information during VF initialization. See definition of
925 	 * FM10K_TDLEN_ITR_SCALE_SHIFT for more details.
926 	 */
927 	fm10k_write_reg(hw, FM10K_TDLEN(vf_q_idx), hw->mac.itr_scale <<
928 						   FM10K_TDLEN_ITR_SCALE_SHIFT);
929 
930 err_out:
931 	/* restore the queue back to VF ownership */
932 	fm10k_write_reg(hw, FM10K_TQMAP(qmap_idx), vf_q_idx);
933 	return err;
934 }
935 
936 /**
937  *  fm10k_iov_reset_resources_pf - Reassign queues and interrupts to a VF
938  *  @hw: pointer to the HW structure
939  *  @vf_info: pointer to VF information structure
940  *
941  *  Reassign the interrupts and queues to a VF following an FLR
942  **/
943 static s32 fm10k_iov_reset_resources_pf(struct fm10k_hw *hw,
944 					struct fm10k_vf_info *vf_info)
945 {
946 	u16 qmap_stride, queues_per_pool, vf_q_idx, qmap_idx;
947 	u32 tdbal = 0, tdbah = 0, txqctl, rxqctl;
948 	u16 vf_v_idx, vf_v_limit, vf_vid;
949 	u8 vf_idx = vf_info->vf_idx;
950 	int i;
951 
952 	/* verify vf is in range */
953 	if (vf_idx >= hw->iov.num_vfs)
954 		return FM10K_ERR_PARAM;
955 
956 	/* clear event notification of VF FLR */
957 	fm10k_write_reg(hw, FM10K_PFVFLREC(vf_idx / 32), BIT(vf_idx % 32));
958 
959 	/* force timeout and then disconnect the mailbox */
960 	vf_info->mbx.timeout = 0;
961 	if (vf_info->mbx.ops.disconnect)
962 		vf_info->mbx.ops.disconnect(hw, &vf_info->mbx);
963 
964 	/* determine vector offset and count */
965 	vf_v_idx = fm10k_vf_vector_index(hw, vf_idx);
966 	vf_v_limit = vf_v_idx + fm10k_vectors_per_pool(hw);
967 
968 	/* determine qmap offsets and counts */
969 	qmap_stride = (hw->iov.num_vfs > 8) ? 32 : 256;
970 	queues_per_pool = fm10k_queues_per_pool(hw);
971 	qmap_idx = qmap_stride * vf_idx;
972 
973 	/* make all the queues inaccessible to the VF */
974 	for (i = qmap_idx; i < (qmap_idx + qmap_stride); i++) {
975 		fm10k_write_reg(hw, FM10K_TQMAP(i), 0);
976 		fm10k_write_reg(hw, FM10K_RQMAP(i), 0);
977 	}
978 
979 	/* calculate starting index for queues */
980 	vf_q_idx = fm10k_vf_queue_index(hw, vf_idx);
981 
982 	/* determine correct default VLAN ID */
983 	if (vf_info->pf_vid)
984 		vf_vid = vf_info->pf_vid;
985 	else
986 		vf_vid = vf_info->sw_vid;
987 
988 	/* configure Queue control register */
989 	txqctl = ((u32)vf_vid << FM10K_TXQCTL_VID_SHIFT) |
990 		 (vf_idx << FM10K_TXQCTL_TC_SHIFT) |
991 		 FM10K_TXQCTL_VF | vf_idx;
992 	rxqctl = (vf_idx << FM10K_RXQCTL_VF_SHIFT) | FM10K_RXQCTL_VF;
993 
994 	/* stop further DMA and reset queue ownership back to VF */
995 	for (i = vf_q_idx; i < (queues_per_pool + vf_q_idx); i++) {
996 		fm10k_write_reg(hw, FM10K_TXDCTL(i), 0);
997 		fm10k_write_reg(hw, FM10K_TXQCTL(i), txqctl);
998 		fm10k_write_reg(hw, FM10K_RXDCTL(i),
999 				FM10K_RXDCTL_WRITE_BACK_MIN_DELAY |
1000 				FM10K_RXDCTL_DROP_ON_EMPTY);
1001 		fm10k_write_reg(hw, FM10K_RXQCTL(i), rxqctl);
1002 	}
1003 
1004 	/* reset TC with -1 credits and no quanta to prevent transmit */
1005 	fm10k_write_reg(hw, FM10K_TC_MAXCREDIT(vf_idx), 0);
1006 	fm10k_write_reg(hw, FM10K_TC_RATE(vf_idx), 0);
1007 	fm10k_write_reg(hw, FM10K_TC_CREDIT(vf_idx),
1008 			FM10K_TC_CREDIT_CREDIT_MASK);
1009 
1010 	/* update our first entry in the table based on previous VF */
1011 	if (!vf_idx)
1012 		hw->mac.ops.update_int_moderator(hw);
1013 	else
1014 		hw->iov.ops.assign_int_moderator(hw, vf_idx - 1);
1015 
1016 	/* reset linked list so it now includes our active vectors */
1017 	if (vf_idx == (hw->iov.num_vfs - 1))
1018 		fm10k_write_reg(hw, FM10K_ITR2(0), vf_v_idx);
1019 	else
1020 		fm10k_write_reg(hw, FM10K_ITR2(vf_v_limit), vf_v_idx);
1021 
1022 	/* link remaining vectors so that next points to previous */
1023 	for (vf_v_idx++; vf_v_idx < vf_v_limit; vf_v_idx++)
1024 		fm10k_write_reg(hw, FM10K_ITR2(vf_v_idx), vf_v_idx - 1);
1025 
1026 	/* zero out MBMEM, VLAN_TABLE, RETA, RSSRK, and MRQC registers */
1027 	for (i = FM10K_VFMBMEM_LEN; i--;)
1028 		fm10k_write_reg(hw, FM10K_MBMEM_VF(vf_idx, i), 0);
1029 	for (i = FM10K_VLAN_TABLE_SIZE; i--;)
1030 		fm10k_write_reg(hw, FM10K_VLAN_TABLE(vf_info->vsi, i), 0);
1031 	for (i = FM10K_RETA_SIZE; i--;)
1032 		fm10k_write_reg(hw, FM10K_RETA(vf_info->vsi, i), 0);
1033 	for (i = FM10K_RSSRK_SIZE; i--;)
1034 		fm10k_write_reg(hw, FM10K_RSSRK(vf_info->vsi, i), 0);
1035 	fm10k_write_reg(hw, FM10K_MRQC(vf_info->vsi), 0);
1036 
1037 	/* Update base address registers to contain MAC address */
1038 	if (is_valid_ether_addr(vf_info->mac)) {
1039 		tdbal = (((u32)vf_info->mac[3]) << 24) |
1040 			(((u32)vf_info->mac[4]) << 16) |
1041 			(((u32)vf_info->mac[5]) << 8);
1042 		tdbah = (((u32)0xFF)	   << 24) |
1043 			(((u32)vf_info->mac[0]) << 16) |
1044 			(((u32)vf_info->mac[1]) << 8) |
1045 			((u32)vf_info->mac[2]);
1046 	}
1047 
1048 	/* map queue pairs back to VF from last to first */
1049 	for (i = queues_per_pool; i--;) {
1050 		fm10k_write_reg(hw, FM10K_TDBAL(vf_q_idx + i), tdbal);
1051 		fm10k_write_reg(hw, FM10K_TDBAH(vf_q_idx + i), tdbah);
1052 		/* See definition of FM10K_TDLEN_ITR_SCALE_SHIFT for an
1053 		 * explanation of how TDLEN is used.
1054 		 */
1055 		fm10k_write_reg(hw, FM10K_TDLEN(vf_q_idx + i),
1056 				hw->mac.itr_scale <<
1057 				FM10K_TDLEN_ITR_SCALE_SHIFT);
1058 		fm10k_write_reg(hw, FM10K_TQMAP(qmap_idx + i), vf_q_idx + i);
1059 		fm10k_write_reg(hw, FM10K_RQMAP(qmap_idx + i), vf_q_idx + i);
1060 	}
1061 
1062 	/* repeat the first ring for all the remaining VF rings */
1063 	for (i = queues_per_pool; i < qmap_stride; i++) {
1064 		fm10k_write_reg(hw, FM10K_TQMAP(qmap_idx + i), vf_q_idx);
1065 		fm10k_write_reg(hw, FM10K_RQMAP(qmap_idx + i), vf_q_idx);
1066 	}
1067 
1068 	return 0;
1069 }
1070 
1071 /**
1072  *  fm10k_iov_set_lport_pf - Assign and enable a logical port for a given VF
1073  *  @hw: pointer to hardware structure
1074  *  @vf_info: pointer to VF information structure
1075  *  @lport_idx: Logical port offset from the hardware glort
1076  *  @flags: Set of capability flags to extend port beyond basic functionality
1077  *
1078  *  This function allows enabling a VF port by assigning it a GLORT and
1079  *  setting the flags so that it can enable an Rx mode.
1080  **/
1081 static s32 fm10k_iov_set_lport_pf(struct fm10k_hw *hw,
1082 				  struct fm10k_vf_info *vf_info,
1083 				  u16 lport_idx, u8 flags)
1084 {
1085 	u16 glort = (hw->mac.dglort_map + lport_idx) & FM10K_DGLORTMAP_NONE;
1086 
1087 	/* if glort is not valid return error */
1088 	if (!fm10k_glort_valid_pf(hw, glort))
1089 		return FM10K_ERR_PARAM;
1090 
1091 	vf_info->vf_flags = flags | FM10K_VF_FLAG_NONE_CAPABLE;
1092 	vf_info->glort = glort;
1093 
1094 	return 0;
1095 }
1096 
1097 /**
1098  *  fm10k_iov_reset_lport_pf - Disable a logical port for a given VF
1099  *  @hw: pointer to hardware structure
1100  *  @vf_info: pointer to VF information structure
1101  *
1102  *  This function disables a VF port by stripping it of a GLORT and
1103  *  setting the flags so that it cannot enable any Rx mode.
1104  **/
1105 static void fm10k_iov_reset_lport_pf(struct fm10k_hw *hw,
1106 				     struct fm10k_vf_info *vf_info)
1107 {
1108 	u32 msg[1];
1109 
1110 	/* need to disable the port if it is already enabled */
1111 	if (FM10K_VF_FLAG_ENABLED(vf_info)) {
1112 		/* notify switch that this port has been disabled */
1113 		fm10k_update_lport_state_pf(hw, vf_info->glort, 1, false);
1114 
1115 		/* generate port state response to notify VF it is not ready */
1116 		fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
1117 		vf_info->mbx.ops.enqueue_tx(hw, &vf_info->mbx, msg);
1118 	}
1119 
1120 	/* clear flags and glort if it exists */
1121 	vf_info->vf_flags = 0;
1122 	vf_info->glort = 0;
1123 }
1124 
1125 /**
1126  *  fm10k_iov_update_stats_pf - Updates hardware related statistics for VFs
1127  *  @hw: pointer to hardware structure
1128  *  @q: stats for all queues of a VF
1129  *  @vf_idx: index of VF
1130  *
1131  *  This function collects queue stats for VFs.
1132  **/
1133 static void fm10k_iov_update_stats_pf(struct fm10k_hw *hw,
1134 				      struct fm10k_hw_stats_q *q,
1135 				      u16 vf_idx)
1136 {
1137 	u32 idx, qpp;
1138 
1139 	/* get stats for all of the queues */
1140 	qpp = fm10k_queues_per_pool(hw);
1141 	idx = fm10k_vf_queue_index(hw, vf_idx);
1142 	fm10k_update_hw_stats_q(hw, q, idx, qpp);
1143 }
1144 
1145 /**
1146  *  fm10k_iov_msg_msix_pf - Message handler for MSI-X request from VF
1147  *  @hw: Pointer to hardware structure
1148  *  @results: Pointer array to message, results[0] is pointer to message
1149  *  @mbx: Pointer to mailbox information structure
1150  *
1151  *  This function is a default handler for MSI-X requests from the VF. The
1152  *  assumption is that in this case it is acceptable to just directly
1153  *  hand off the message from the VF to the underlying shared code.
1154  **/
1155 s32 fm10k_iov_msg_msix_pf(struct fm10k_hw *hw, u32 __always_unused **results,
1156 			  struct fm10k_mbx_info *mbx)
1157 {
1158 	struct fm10k_vf_info *vf_info = (struct fm10k_vf_info *)mbx;
1159 	u8 vf_idx = vf_info->vf_idx;
1160 
1161 	return hw->iov.ops.assign_int_moderator(hw, vf_idx);
1162 }
1163 
1164 /**
1165  * fm10k_iov_select_vid - Select correct default VLAN ID
1166  * @vf_info: pointer to VF information structure
1167  * @vid: VLAN ID to correct
1168  *
1169  * Will report an error if the VLAN ID is out of range. For VID = 0, it will
1170  * return either the pf_vid or sw_vid depending on which one is set.
1171  */
1172 s32 fm10k_iov_select_vid(struct fm10k_vf_info *vf_info, u16 vid)
1173 {
1174 	if (!vid)
1175 		return vf_info->pf_vid ? vf_info->pf_vid : vf_info->sw_vid;
1176 	else if (vf_info->pf_vid && vid != vf_info->pf_vid)
1177 		return FM10K_ERR_PARAM;
1178 	else
1179 		return vid;
1180 }
1181 
1182 /**
1183  *  fm10k_iov_msg_mac_vlan_pf - Message handler for MAC/VLAN request from VF
1184  *  @hw: Pointer to hardware structure
1185  *  @results: Pointer array to message, results[0] is pointer to message
1186  *  @mbx: Pointer to mailbox information structure
1187  *
1188  *  This function is a default handler for MAC/VLAN requests from the VF.
1189  *  The assumption is that in this case it is acceptable to just directly
1190  *  hand off the message from the VF to the underlying shared code.
1191  **/
1192 s32 fm10k_iov_msg_mac_vlan_pf(struct fm10k_hw *hw, u32 **results,
1193 			      struct fm10k_mbx_info *mbx)
1194 {
1195 	struct fm10k_vf_info *vf_info = (struct fm10k_vf_info *)mbx;
1196 	u8 mac[ETH_ALEN];
1197 	u32 *result;
1198 	int err = 0;
1199 	bool set;
1200 	u16 vlan;
1201 	u32 vid;
1202 
1203 	/* we shouldn't be updating rules on a disabled interface */
1204 	if (!FM10K_VF_FLAG_ENABLED(vf_info))
1205 		err = FM10K_ERR_PARAM;
1206 
1207 	if (!err && !!results[FM10K_MAC_VLAN_MSG_VLAN]) {
1208 		result = results[FM10K_MAC_VLAN_MSG_VLAN];
1209 
1210 		/* record VLAN id requested */
1211 		err = fm10k_tlv_attr_get_u32(result, &vid);
1212 		if (err)
1213 			return err;
1214 
1215 		set = !(vid & FM10K_VLAN_CLEAR);
1216 		vid &= ~FM10K_VLAN_CLEAR;
1217 
1218 		/* if the length field has been set, this is a multi-bit
1219 		 * update request. For multi-bit requests, simply disallow
1220 		 * them when the pf_vid has been set. In this case, the PF
1221 		 * should have already cleared the VLAN_TABLE, and if we
1222 		 * allowed them, it could allow a rogue VF to receive traffic
1223 		 * on a VLAN it was not assigned. In the single-bit case, we
1224 		 * need to modify requests for VLAN 0 to use the default PF or
1225 		 * SW vid when assigned.
1226 		 */
1227 
1228 		if (vid >> 16) {
1229 			/* prevent multi-bit requests when PF has
1230 			 * administratively set the VLAN for this VF
1231 			 */
1232 			if (vf_info->pf_vid)
1233 				return FM10K_ERR_PARAM;
1234 		} else {
1235 			err = fm10k_iov_select_vid(vf_info, (u16)vid);
1236 			if (err < 0)
1237 				return err;
1238 
1239 			vid = err;
1240 		}
1241 
1242 		/* update VSI info for VF in regards to VLAN table */
1243 		err = hw->mac.ops.update_vlan(hw, vid, vf_info->vsi, set);
1244 	}
1245 
1246 	if (!err && !!results[FM10K_MAC_VLAN_MSG_MAC]) {
1247 		result = results[FM10K_MAC_VLAN_MSG_MAC];
1248 
1249 		/* record unicast MAC address requested */
1250 		err = fm10k_tlv_attr_get_mac_vlan(result, mac, &vlan);
1251 		if (err)
1252 			return err;
1253 
1254 		/* block attempts to set MAC for a locked device */
1255 		if (is_valid_ether_addr(vf_info->mac) &&
1256 		    !ether_addr_equal(mac, vf_info->mac))
1257 			return FM10K_ERR_PARAM;
1258 
1259 		set = !(vlan & FM10K_VLAN_CLEAR);
1260 		vlan &= ~FM10K_VLAN_CLEAR;
1261 
1262 		err = fm10k_iov_select_vid(vf_info, vlan);
1263 		if (err < 0)
1264 			return err;
1265 
1266 		vlan = (u16)err;
1267 
1268 		/* notify switch of request for new unicast address */
1269 		err = hw->mac.ops.update_uc_addr(hw, vf_info->glort,
1270 						 mac, vlan, set, 0);
1271 	}
1272 
1273 	if (!err && !!results[FM10K_MAC_VLAN_MSG_MULTICAST]) {
1274 		result = results[FM10K_MAC_VLAN_MSG_MULTICAST];
1275 
1276 		/* record multicast MAC address requested */
1277 		err = fm10k_tlv_attr_get_mac_vlan(result, mac, &vlan);
1278 		if (err)
1279 			return err;
1280 
1281 		/* verify that the VF is allowed to request multicast */
1282 		if (!(vf_info->vf_flags & FM10K_VF_FLAG_MULTI_ENABLED))
1283 			return FM10K_ERR_PARAM;
1284 
1285 		set = !(vlan & FM10K_VLAN_CLEAR);
1286 		vlan &= ~FM10K_VLAN_CLEAR;
1287 
1288 		err = fm10k_iov_select_vid(vf_info, vlan);
1289 		if (err < 0)
1290 			return err;
1291 
1292 		vlan = (u16)err;
1293 
1294 		/* notify switch of request for new multicast address */
1295 		err = hw->mac.ops.update_mc_addr(hw, vf_info->glort,
1296 						 mac, vlan, set);
1297 	}
1298 
1299 	return err;
1300 }
1301 
1302 /**
1303  *  fm10k_iov_supported_xcast_mode_pf - Determine best match for xcast mode
1304  *  @vf_info: VF info structure containing capability flags
1305  *  @mode: Requested xcast mode
1306  *
1307  *  This function outputs the mode that most closely matches the requested
1308  *  mode.  If not modes match it will request we disable the port
1309  **/
1310 static u8 fm10k_iov_supported_xcast_mode_pf(struct fm10k_vf_info *vf_info,
1311 					    u8 mode)
1312 {
1313 	u8 vf_flags = vf_info->vf_flags;
1314 
1315 	/* match up mode to capabilities as best as possible */
1316 	switch (mode) {
1317 	case FM10K_XCAST_MODE_PROMISC:
1318 		if (vf_flags & FM10K_VF_FLAG_PROMISC_CAPABLE)
1319 			return FM10K_XCAST_MODE_PROMISC;
1320 		fallthrough;
1321 	case FM10K_XCAST_MODE_ALLMULTI:
1322 		if (vf_flags & FM10K_VF_FLAG_ALLMULTI_CAPABLE)
1323 			return FM10K_XCAST_MODE_ALLMULTI;
1324 		fallthrough;
1325 	case FM10K_XCAST_MODE_MULTI:
1326 		if (vf_flags & FM10K_VF_FLAG_MULTI_CAPABLE)
1327 			return FM10K_XCAST_MODE_MULTI;
1328 		fallthrough;
1329 	case FM10K_XCAST_MODE_NONE:
1330 		if (vf_flags & FM10K_VF_FLAG_NONE_CAPABLE)
1331 			return FM10K_XCAST_MODE_NONE;
1332 		fallthrough;
1333 	default:
1334 		break;
1335 	}
1336 
1337 	/* disable interface as it should not be able to request any */
1338 	return FM10K_XCAST_MODE_DISABLE;
1339 }
1340 
1341 /**
1342  *  fm10k_iov_msg_lport_state_pf - Message handler for port state requests
1343  *  @hw: Pointer to hardware structure
1344  *  @results: Pointer array to message, results[0] is pointer to message
1345  *  @mbx: Pointer to mailbox information structure
1346  *
1347  *  This function is a default handler for port state requests.  The port
1348  *  state requests for now are basic and consist of enabling or disabling
1349  *  the port.
1350  **/
1351 s32 fm10k_iov_msg_lport_state_pf(struct fm10k_hw *hw, u32 **results,
1352 				 struct fm10k_mbx_info *mbx)
1353 {
1354 	struct fm10k_vf_info *vf_info = (struct fm10k_vf_info *)mbx;
1355 	s32 err = 0;
1356 	u32 msg[2];
1357 	u8 mode = 0;
1358 
1359 	/* verify VF is allowed to enable even minimal mode */
1360 	if (!(vf_info->vf_flags & FM10K_VF_FLAG_NONE_CAPABLE))
1361 		return FM10K_ERR_PARAM;
1362 
1363 	if (!!results[FM10K_LPORT_STATE_MSG_XCAST_MODE]) {
1364 		u32 *result = results[FM10K_LPORT_STATE_MSG_XCAST_MODE];
1365 
1366 		/* XCAST mode update requested */
1367 		err = fm10k_tlv_attr_get_u8(result, &mode);
1368 		if (err)
1369 			return FM10K_ERR_PARAM;
1370 
1371 		/* prep for possible demotion depending on capabilities */
1372 		mode = fm10k_iov_supported_xcast_mode_pf(vf_info, mode);
1373 
1374 		/* if mode is not currently enabled, enable it */
1375 		if (!(FM10K_VF_FLAG_ENABLED(vf_info) & BIT(mode)))
1376 			fm10k_update_xcast_mode_pf(hw, vf_info->glort, mode);
1377 
1378 		/* swap mode back to a bit flag */
1379 		mode = FM10K_VF_FLAG_SET_MODE(mode);
1380 	} else if (!results[FM10K_LPORT_STATE_MSG_DISABLE]) {
1381 		/* need to disable the port if it is already enabled */
1382 		if (FM10K_VF_FLAG_ENABLED(vf_info))
1383 			err = fm10k_update_lport_state_pf(hw, vf_info->glort,
1384 							  1, false);
1385 
1386 		/* we need to clear VF_FLAG_ENABLED flags in order to ensure
1387 		 * that we actually re-enable the LPORT state below. Note that
1388 		 * this has no impact if the VF is already disabled, as the
1389 		 * flags are already cleared.
1390 		 */
1391 		if (!err)
1392 			vf_info->vf_flags = FM10K_VF_FLAG_CAPABLE(vf_info);
1393 
1394 		/* when enabling the port we should reset the rate limiters */
1395 		hw->iov.ops.configure_tc(hw, vf_info->vf_idx, vf_info->rate);
1396 
1397 		/* set mode for minimal functionality */
1398 		mode = FM10K_VF_FLAG_SET_MODE_NONE;
1399 
1400 		/* generate port state response to notify VF it is ready */
1401 		fm10k_tlv_msg_init(msg, FM10K_VF_MSG_ID_LPORT_STATE);
1402 		fm10k_tlv_attr_put_bool(msg, FM10K_LPORT_STATE_MSG_READY);
1403 		mbx->ops.enqueue_tx(hw, mbx, msg);
1404 	}
1405 
1406 	/* if enable state toggled note the update */
1407 	if (!err && (!FM10K_VF_FLAG_ENABLED(vf_info) != !mode))
1408 		err = fm10k_update_lport_state_pf(hw, vf_info->glort, 1,
1409 						  !!mode);
1410 
1411 	/* if state change succeeded, then update our stored state */
1412 	mode |= FM10K_VF_FLAG_CAPABLE(vf_info);
1413 	if (!err)
1414 		vf_info->vf_flags = mode;
1415 
1416 	return err;
1417 }
1418 
1419 /**
1420  *  fm10k_update_stats_hw_pf - Updates hardware related statistics of PF
1421  *  @hw: pointer to hardware structure
1422  *  @stats: pointer to the stats structure to update
1423  *
1424  *  This function collects and aggregates global and per queue hardware
1425  *  statistics.
1426  **/
1427 static void fm10k_update_hw_stats_pf(struct fm10k_hw *hw,
1428 				     struct fm10k_hw_stats *stats)
1429 {
1430 	u32 timeout, ur, ca, um, xec, vlan_drop, loopback_drop, nodesc_drop;
1431 	u32 id, id_prev;
1432 
1433 	/* Use Tx queue 0 as a canary to detect a reset */
1434 	id = fm10k_read_reg(hw, FM10K_TXQCTL(0));
1435 
1436 	/* Read Global Statistics */
1437 	do {
1438 		timeout = fm10k_read_hw_stats_32b(hw, FM10K_STATS_TIMEOUT,
1439 						  &stats->timeout);
1440 		ur = fm10k_read_hw_stats_32b(hw, FM10K_STATS_UR, &stats->ur);
1441 		ca = fm10k_read_hw_stats_32b(hw, FM10K_STATS_CA, &stats->ca);
1442 		um = fm10k_read_hw_stats_32b(hw, FM10K_STATS_UM, &stats->um);
1443 		xec = fm10k_read_hw_stats_32b(hw, FM10K_STATS_XEC, &stats->xec);
1444 		vlan_drop = fm10k_read_hw_stats_32b(hw, FM10K_STATS_VLAN_DROP,
1445 						    &stats->vlan_drop);
1446 		loopback_drop =
1447 			fm10k_read_hw_stats_32b(hw,
1448 						FM10K_STATS_LOOPBACK_DROP,
1449 						&stats->loopback_drop);
1450 		nodesc_drop = fm10k_read_hw_stats_32b(hw,
1451 						      FM10K_STATS_NODESC_DROP,
1452 						      &stats->nodesc_drop);
1453 
1454 		/* if value has not changed then we have consistent data */
1455 		id_prev = id;
1456 		id = fm10k_read_reg(hw, FM10K_TXQCTL(0));
1457 	} while ((id ^ id_prev) & FM10K_TXQCTL_ID_MASK);
1458 
1459 	/* drop non-ID bits and set VALID ID bit */
1460 	id &= FM10K_TXQCTL_ID_MASK;
1461 	id |= FM10K_STAT_VALID;
1462 
1463 	/* Update Global Statistics */
1464 	if (stats->stats_idx == id) {
1465 		stats->timeout.count += timeout;
1466 		stats->ur.count += ur;
1467 		stats->ca.count += ca;
1468 		stats->um.count += um;
1469 		stats->xec.count += xec;
1470 		stats->vlan_drop.count += vlan_drop;
1471 		stats->loopback_drop.count += loopback_drop;
1472 		stats->nodesc_drop.count += nodesc_drop;
1473 	}
1474 
1475 	/* Update bases and record current PF id */
1476 	fm10k_update_hw_base_32b(&stats->timeout, timeout);
1477 	fm10k_update_hw_base_32b(&stats->ur, ur);
1478 	fm10k_update_hw_base_32b(&stats->ca, ca);
1479 	fm10k_update_hw_base_32b(&stats->um, um);
1480 	fm10k_update_hw_base_32b(&stats->xec, xec);
1481 	fm10k_update_hw_base_32b(&stats->vlan_drop, vlan_drop);
1482 	fm10k_update_hw_base_32b(&stats->loopback_drop, loopback_drop);
1483 	fm10k_update_hw_base_32b(&stats->nodesc_drop, nodesc_drop);
1484 	stats->stats_idx = id;
1485 
1486 	/* Update Queue Statistics */
1487 	fm10k_update_hw_stats_q(hw, stats->q, 0, hw->mac.max_queues);
1488 }
1489 
1490 /**
1491  *  fm10k_rebind_hw_stats_pf - Resets base for hardware statistics of PF
1492  *  @hw: pointer to hardware structure
1493  *  @stats: pointer to the stats structure to update
1494  *
1495  *  This function resets the base for global and per queue hardware
1496  *  statistics.
1497  **/
1498 static void fm10k_rebind_hw_stats_pf(struct fm10k_hw *hw,
1499 				     struct fm10k_hw_stats *stats)
1500 {
1501 	/* Unbind Global Statistics */
1502 	fm10k_unbind_hw_stats_32b(&stats->timeout);
1503 	fm10k_unbind_hw_stats_32b(&stats->ur);
1504 	fm10k_unbind_hw_stats_32b(&stats->ca);
1505 	fm10k_unbind_hw_stats_32b(&stats->um);
1506 	fm10k_unbind_hw_stats_32b(&stats->xec);
1507 	fm10k_unbind_hw_stats_32b(&stats->vlan_drop);
1508 	fm10k_unbind_hw_stats_32b(&stats->loopback_drop);
1509 	fm10k_unbind_hw_stats_32b(&stats->nodesc_drop);
1510 
1511 	/* Unbind Queue Statistics */
1512 	fm10k_unbind_hw_stats_q(stats->q, 0, hw->mac.max_queues);
1513 
1514 	/* Reinitialize bases for all stats */
1515 	fm10k_update_hw_stats_pf(hw, stats);
1516 }
1517 
1518 /**
1519  *  fm10k_set_dma_mask_pf - Configures PhyAddrSpace to limit DMA to system
1520  *  @hw: pointer to hardware structure
1521  *  @dma_mask: 64 bit DMA mask required for platform
1522  *
1523  *  This function sets the PHYADDR.PhyAddrSpace bits for the endpoint in order
1524  *  to limit the access to memory beyond what is physically in the system.
1525  **/
1526 static void fm10k_set_dma_mask_pf(struct fm10k_hw *hw, u64 dma_mask)
1527 {
1528 	/* we need to write the upper 32 bits of DMA mask to PhyAddrSpace */
1529 	u32 phyaddr = (u32)(dma_mask >> 32);
1530 
1531 	fm10k_write_reg(hw, FM10K_PHYADDR, phyaddr);
1532 }
1533 
1534 /**
1535  *  fm10k_get_fault_pf - Record a fault in one of the interface units
1536  *  @hw: pointer to hardware structure
1537  *  @type: pointer to fault type register offset
1538  *  @fault: pointer to memory location to record the fault
1539  *
1540  *  Record the fault register contents to the fault data structure and
1541  *  clear the entry from the register.
1542  *
1543  *  Returns ERR_PARAM if invalid register is specified or no error is present.
1544  **/
1545 static s32 fm10k_get_fault_pf(struct fm10k_hw *hw, int type,
1546 			      struct fm10k_fault *fault)
1547 {
1548 	u32 func;
1549 
1550 	/* verify the fault register is in range and is aligned */
1551 	switch (type) {
1552 	case FM10K_PCA_FAULT:
1553 	case FM10K_THI_FAULT:
1554 	case FM10K_FUM_FAULT:
1555 		break;
1556 	default:
1557 		return FM10K_ERR_PARAM;
1558 	}
1559 
1560 	/* only service faults that are valid */
1561 	func = fm10k_read_reg(hw, type + FM10K_FAULT_FUNC);
1562 	if (!(func & FM10K_FAULT_FUNC_VALID))
1563 		return FM10K_ERR_PARAM;
1564 
1565 	/* read remaining fields */
1566 	fault->address = fm10k_read_reg(hw, type + FM10K_FAULT_ADDR_HI);
1567 	fault->address <<= 32;
1568 	fault->address |= fm10k_read_reg(hw, type + FM10K_FAULT_ADDR_LO);
1569 	fault->specinfo = fm10k_read_reg(hw, type + FM10K_FAULT_SPECINFO);
1570 
1571 	/* clear valid bit to allow for next error */
1572 	fm10k_write_reg(hw, type + FM10K_FAULT_FUNC, FM10K_FAULT_FUNC_VALID);
1573 
1574 	/* Record which function triggered the error */
1575 	if (func & FM10K_FAULT_FUNC_PF)
1576 		fault->func = 0;
1577 	else
1578 		fault->func = 1 + ((func & FM10K_FAULT_FUNC_VF_MASK) >>
1579 				   FM10K_FAULT_FUNC_VF_SHIFT);
1580 
1581 	/* record fault type */
1582 	fault->type = func & FM10K_FAULT_FUNC_TYPE_MASK;
1583 
1584 	return 0;
1585 }
1586 
1587 /**
1588  *  fm10k_request_lport_map_pf - Request LPORT map from the switch API
1589  *  @hw: pointer to hardware structure
1590  *
1591  **/
1592 static s32 fm10k_request_lport_map_pf(struct fm10k_hw *hw)
1593 {
1594 	struct fm10k_mbx_info *mbx = &hw->mbx;
1595 	u32 msg[1];
1596 
1597 	/* issue request asking for LPORT map */
1598 	fm10k_tlv_msg_init(msg, FM10K_PF_MSG_ID_LPORT_MAP);
1599 
1600 	/* load onto outgoing mailbox */
1601 	return mbx->ops.enqueue_tx(hw, mbx, msg);
1602 }
1603 
1604 /**
1605  *  fm10k_get_host_state_pf - Returns the state of the switch and mailbox
1606  *  @hw: pointer to hardware structure
1607  *  @switch_ready: pointer to boolean value that will record switch state
1608  *
1609  *  This function will check the DMA_CTRL2 register and mailbox in order
1610  *  to determine if the switch is ready for the PF to begin requesting
1611  *  addresses and mapping traffic to the local interface.
1612  **/
1613 static s32 fm10k_get_host_state_pf(struct fm10k_hw *hw, bool *switch_ready)
1614 {
1615 	u32 dma_ctrl2;
1616 
1617 	/* verify the switch is ready for interaction */
1618 	dma_ctrl2 = fm10k_read_reg(hw, FM10K_DMA_CTRL2);
1619 	if (!(dma_ctrl2 & FM10K_DMA_CTRL2_SWITCH_READY))
1620 		return 0;
1621 
1622 	/* retrieve generic host state info */
1623 	return fm10k_get_host_state_generic(hw, switch_ready);
1624 }
1625 
1626 /* This structure defines the attibutes to be parsed below */
1627 const struct fm10k_tlv_attr fm10k_lport_map_msg_attr[] = {
1628 	FM10K_TLV_ATTR_LE_STRUCT(FM10K_PF_ATTR_ID_ERR,
1629 				 sizeof(struct fm10k_swapi_error)),
1630 	FM10K_TLV_ATTR_U32(FM10K_PF_ATTR_ID_LPORT_MAP),
1631 	FM10K_TLV_ATTR_LAST
1632 };
1633 
1634 /**
1635  *  fm10k_msg_lport_map_pf - Message handler for lport_map message from SM
1636  *  @hw: Pointer to hardware structure
1637  *  @results: pointer array containing parsed data
1638  *  @mbx: Pointer to mailbox information structure
1639  *
1640  *  This handler configures the lport mapping based on the reply from the
1641  *  switch API.
1642  **/
1643 s32 fm10k_msg_lport_map_pf(struct fm10k_hw *hw, u32 **results,
1644 			   struct fm10k_mbx_info __always_unused *mbx)
1645 {
1646 	u16 glort, mask;
1647 	u32 dglort_map;
1648 	s32 err;
1649 
1650 	err = fm10k_tlv_attr_get_u32(results[FM10K_PF_ATTR_ID_LPORT_MAP],
1651 				     &dglort_map);
1652 	if (err)
1653 		return err;
1654 
1655 	/* extract values out of the header */
1656 	glort = FM10K_MSG_HDR_FIELD_GET(dglort_map, LPORT_MAP_GLORT);
1657 	mask = FM10K_MSG_HDR_FIELD_GET(dglort_map, LPORT_MAP_MASK);
1658 
1659 	/* verify mask is set and none of the masked bits in glort are set */
1660 	if (!mask || (glort & ~mask))
1661 		return FM10K_ERR_PARAM;
1662 
1663 	/* verify the mask is contiguous, and that it is 1's followed by 0's */
1664 	if (((~(mask - 1) & mask) + mask) & FM10K_DGLORTMAP_NONE)
1665 		return FM10K_ERR_PARAM;
1666 
1667 	/* record the glort, mask, and port count */
1668 	hw->mac.dglort_map = dglort_map;
1669 
1670 	return 0;
1671 }
1672 
1673 const struct fm10k_tlv_attr fm10k_update_pvid_msg_attr[] = {
1674 	FM10K_TLV_ATTR_U32(FM10K_PF_ATTR_ID_UPDATE_PVID),
1675 	FM10K_TLV_ATTR_LAST
1676 };
1677 
1678 /**
1679  *  fm10k_msg_update_pvid_pf - Message handler for port VLAN message from SM
1680  *  @hw: Pointer to hardware structure
1681  *  @results: pointer array containing parsed data
1682  *  @mbx: Pointer to mailbox information structure
1683  *
1684  *  This handler configures the default VLAN for the PF
1685  **/
1686 static s32 fm10k_msg_update_pvid_pf(struct fm10k_hw *hw, u32 **results,
1687 				    struct fm10k_mbx_info __always_unused *mbx)
1688 {
1689 	u16 glort, pvid;
1690 	u32 pvid_update;
1691 	s32 err;
1692 
1693 	err = fm10k_tlv_attr_get_u32(results[FM10K_PF_ATTR_ID_UPDATE_PVID],
1694 				     &pvid_update);
1695 	if (err)
1696 		return err;
1697 
1698 	/* extract values from the pvid update */
1699 	glort = FM10K_MSG_HDR_FIELD_GET(pvid_update, UPDATE_PVID_GLORT);
1700 	pvid = FM10K_MSG_HDR_FIELD_GET(pvid_update, UPDATE_PVID_PVID);
1701 
1702 	/* if glort is not valid return error */
1703 	if (!fm10k_glort_valid_pf(hw, glort))
1704 		return FM10K_ERR_PARAM;
1705 
1706 	/* verify VLAN ID is valid */
1707 	if (pvid >= FM10K_VLAN_TABLE_VID_MAX)
1708 		return FM10K_ERR_PARAM;
1709 
1710 	/* record the port VLAN ID value */
1711 	hw->mac.default_vid = pvid;
1712 
1713 	return 0;
1714 }
1715 
1716 /**
1717  *  fm10k_record_global_table_data - Move global table data to swapi table info
1718  *  @from: pointer to source table data structure
1719  *  @to: pointer to destination table info structure
1720  *
1721  *  This function is will copy table_data to the table_info contained in
1722  *  the hw struct.
1723  **/
1724 static void fm10k_record_global_table_data(struct fm10k_global_table_data *from,
1725 					   struct fm10k_swapi_table_info *to)
1726 {
1727 	/* convert from le32 struct to CPU byte ordered values */
1728 	to->used = le32_to_cpu(from->used);
1729 	to->avail = le32_to_cpu(from->avail);
1730 }
1731 
1732 const struct fm10k_tlv_attr fm10k_err_msg_attr[] = {
1733 	FM10K_TLV_ATTR_LE_STRUCT(FM10K_PF_ATTR_ID_ERR,
1734 				 sizeof(struct fm10k_swapi_error)),
1735 	FM10K_TLV_ATTR_LAST
1736 };
1737 
1738 /**
1739  *  fm10k_msg_err_pf - Message handler for error reply
1740  *  @hw: Pointer to hardware structure
1741  *  @results: pointer array containing parsed data
1742  *  @mbx: Pointer to mailbox information structure
1743  *
1744  *  This handler will capture the data for any error replies to previous
1745  *  messages that the PF has sent.
1746  **/
1747 s32 fm10k_msg_err_pf(struct fm10k_hw *hw, u32 **results,
1748 		     struct fm10k_mbx_info __always_unused *mbx)
1749 {
1750 	struct fm10k_swapi_error err_msg;
1751 	s32 err;
1752 
1753 	/* extract structure from message */
1754 	err = fm10k_tlv_attr_get_le_struct(results[FM10K_PF_ATTR_ID_ERR],
1755 					   &err_msg, sizeof(err_msg));
1756 	if (err)
1757 		return err;
1758 
1759 	/* record table status */
1760 	fm10k_record_global_table_data(&err_msg.mac, &hw->swapi.mac);
1761 	fm10k_record_global_table_data(&err_msg.nexthop, &hw->swapi.nexthop);
1762 	fm10k_record_global_table_data(&err_msg.ffu, &hw->swapi.ffu);
1763 
1764 	/* record SW API status value */
1765 	hw->swapi.status = le32_to_cpu(err_msg.status);
1766 
1767 	return 0;
1768 }
1769 
1770 static const struct fm10k_msg_data fm10k_msg_data_pf[] = {
1771 	FM10K_PF_MSG_ERR_HANDLER(XCAST_MODES, fm10k_msg_err_pf),
1772 	FM10K_PF_MSG_ERR_HANDLER(UPDATE_MAC_FWD_RULE, fm10k_msg_err_pf),
1773 	FM10K_PF_MSG_LPORT_MAP_HANDLER(fm10k_msg_lport_map_pf),
1774 	FM10K_PF_MSG_ERR_HANDLER(LPORT_CREATE, fm10k_msg_err_pf),
1775 	FM10K_PF_MSG_ERR_HANDLER(LPORT_DELETE, fm10k_msg_err_pf),
1776 	FM10K_PF_MSG_UPDATE_PVID_HANDLER(fm10k_msg_update_pvid_pf),
1777 	FM10K_TLV_MSG_ERROR_HANDLER(fm10k_tlv_msg_error),
1778 };
1779 
1780 static const struct fm10k_mac_ops mac_ops_pf = {
1781 	.get_bus_info		= fm10k_get_bus_info_generic,
1782 	.reset_hw		= fm10k_reset_hw_pf,
1783 	.init_hw		= fm10k_init_hw_pf,
1784 	.start_hw		= fm10k_start_hw_generic,
1785 	.stop_hw		= fm10k_stop_hw_generic,
1786 	.update_vlan		= fm10k_update_vlan_pf,
1787 	.read_mac_addr		= fm10k_read_mac_addr_pf,
1788 	.update_uc_addr		= fm10k_update_uc_addr_pf,
1789 	.update_mc_addr		= fm10k_update_mc_addr_pf,
1790 	.update_xcast_mode	= fm10k_update_xcast_mode_pf,
1791 	.update_int_moderator	= fm10k_update_int_moderator_pf,
1792 	.update_lport_state	= fm10k_update_lport_state_pf,
1793 	.update_hw_stats	= fm10k_update_hw_stats_pf,
1794 	.rebind_hw_stats	= fm10k_rebind_hw_stats_pf,
1795 	.configure_dglort_map	= fm10k_configure_dglort_map_pf,
1796 	.set_dma_mask		= fm10k_set_dma_mask_pf,
1797 	.get_fault		= fm10k_get_fault_pf,
1798 	.get_host_state		= fm10k_get_host_state_pf,
1799 	.request_lport_map	= fm10k_request_lport_map_pf,
1800 };
1801 
1802 static const struct fm10k_iov_ops iov_ops_pf = {
1803 	.assign_resources		= fm10k_iov_assign_resources_pf,
1804 	.configure_tc			= fm10k_iov_configure_tc_pf,
1805 	.assign_int_moderator		= fm10k_iov_assign_int_moderator_pf,
1806 	.assign_default_mac_vlan	= fm10k_iov_assign_default_mac_vlan_pf,
1807 	.reset_resources		= fm10k_iov_reset_resources_pf,
1808 	.set_lport			= fm10k_iov_set_lport_pf,
1809 	.reset_lport			= fm10k_iov_reset_lport_pf,
1810 	.update_stats			= fm10k_iov_update_stats_pf,
1811 };
1812 
1813 static s32 fm10k_get_invariants_pf(struct fm10k_hw *hw)
1814 {
1815 	fm10k_get_invariants_generic(hw);
1816 
1817 	return fm10k_sm_mbx_init(hw, &hw->mbx, fm10k_msg_data_pf);
1818 }
1819 
1820 const struct fm10k_info fm10k_pf_info = {
1821 	.mac		= fm10k_mac_pf,
1822 	.get_invariants	= fm10k_get_invariants_pf,
1823 	.mac_ops	= &mac_ops_pf,
1824 	.iov_ops	= &iov_ops_pf,
1825 };
1826