1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
2 /* QLogic qed NIC Driver
3  * Copyright (c) 2015-2017  QLogic Corporation
4  * Copyright (c) 2019-2020 Marvell International Ltd.
5  */
6 
7 #ifndef _QED_SRIOV_H
8 #define _QED_SRIOV_H
9 #include <linux/types.h>
10 #include "qed_vf.h"
11 
12 #define QED_ETH_VF_NUM_MAC_FILTERS 1
13 #define QED_ETH_VF_NUM_VLAN_FILTERS 2
14 #define QED_VF_ARRAY_LENGTH (3)
15 
16 #ifdef CONFIG_QED_SRIOV
17 #define IS_VF(cdev)             ((cdev)->b_is_vf)
18 #define IS_PF(cdev)             (!((cdev)->b_is_vf))
19 #define IS_PF_SRIOV(p_hwfn)     (!!((p_hwfn)->cdev->p_iov_info))
20 #else
21 #define IS_VF(cdev)             (0)
22 #define IS_PF(cdev)             (1)
23 #define IS_PF_SRIOV(p_hwfn)     (0)
24 #endif
25 #define IS_PF_SRIOV_ALLOC(p_hwfn)       (!!((p_hwfn)->pf_iov_info))
26 
27 #define QED_MAX_VF_CHAINS_PER_PF 16
28 
29 #define QED_ETH_MAX_VF_NUM_VLAN_FILTERS	\
30 	(MAX_NUM_VFS * QED_ETH_VF_NUM_VLAN_FILTERS)
31 
32 enum qed_iov_vport_update_flag {
33 	QED_IOV_VP_UPDATE_ACTIVATE,
34 	QED_IOV_VP_UPDATE_VLAN_STRIP,
35 	QED_IOV_VP_UPDATE_TX_SWITCH,
36 	QED_IOV_VP_UPDATE_MCAST,
37 	QED_IOV_VP_UPDATE_ACCEPT_PARAM,
38 	QED_IOV_VP_UPDATE_RSS,
39 	QED_IOV_VP_UPDATE_ACCEPT_ANY_VLAN,
40 	QED_IOV_VP_UPDATE_SGE_TPA,
41 	QED_IOV_VP_UPDATE_MAX,
42 };
43 
44 struct qed_public_vf_info {
45 	/* These copies will later be reflected in the bulletin board,
46 	 * but this copy should be newer.
47 	 */
48 	u8 forced_mac[ETH_ALEN];
49 	u16 forced_vlan;
50 	u8 mac[ETH_ALEN];
51 
52 	/* IFLA_VF_LINK_STATE_<X> */
53 	int link_state;
54 
55 	/* Currently configured Tx rate in MB/sec. 0 if unconfigured */
56 	int tx_rate;
57 
58 	/* Trusted VFs can configure promiscuous mode.
59 	 * Also store shadow promisc configuration if needed.
60 	 */
61 	bool is_trusted_configured;
62 	bool is_trusted_request;
63 	u8 rx_accept_mode;
64 	u8 tx_accept_mode;
65 	bool accept_any_vlan;
66 };
67 
68 struct qed_iov_vf_init_params {
69 	u16 rel_vf_id;
70 
71 	/* Number of requested Queues; Currently, don't support different
72 	 * number of Rx/Tx queues.
73 	 */
74 
75 	u16 num_queues;
76 
77 	/* Allow the client to choose which qzones to use for Rx/Tx,
78 	 * and which queue_base to use for Tx queues on a per-queue basis.
79 	 * Notice values should be relative to the PF resources.
80 	 */
81 	u16 req_rx_queue[QED_MAX_VF_CHAINS_PER_PF];
82 	u16 req_tx_queue[QED_MAX_VF_CHAINS_PER_PF];
83 };
84 
85 /* This struct is part of qed_dev and contains data relevant to all hwfns;
86  * Initialized only if SR-IOV cpabability is exposed in PCIe config space.
87  */
88 struct qed_hw_sriov_info {
89 	int pos;		/* capability position */
90 	int nres;		/* number of resources */
91 	u32 cap;		/* SR-IOV Capabilities */
92 	u16 ctrl;		/* SR-IOV Control */
93 	u16 total_vfs;		/* total VFs associated with the PF */
94 	u16 num_vfs;		/* number of vfs that have been started */
95 	u16 initial_vfs;	/* initial VFs associated with the PF */
96 	u16 nr_virtfn;		/* number of VFs available */
97 	u16 offset;		/* first VF Routing ID offset */
98 	u16 stride;		/* following VF stride */
99 	u16 vf_device_id;	/* VF device id */
100 	u32 pgsz;		/* page size for BAR alignment */
101 	u8 link;		/* Function Dependency Link */
102 
103 	u32 first_vf_in_pf;
104 };
105 
106 /* This mailbox is maintained per VF in its PF contains all information
107  * required for sending / receiving a message.
108  */
109 struct qed_iov_vf_mbx {
110 	union vfpf_tlvs *req_virt;
111 	dma_addr_t req_phys;
112 	union pfvf_tlvs *reply_virt;
113 	dma_addr_t reply_phys;
114 
115 	/* Address in VF where a pending message is located */
116 	dma_addr_t pending_req;
117 
118 	/* Message from VF awaits handling */
119 	bool b_pending_msg;
120 
121 	u8 *offset;
122 
123 	/* saved VF request header */
124 	struct vfpf_first_tlv first_tlv;
125 };
126 
127 #define QED_IOV_LEGACY_QID_RX (0)
128 #define QED_IOV_LEGACY_QID_TX (1)
129 #define QED_IOV_QID_INVALID (0xFE)
130 
131 struct qed_vf_queue_cid {
132 	bool b_is_tx;
133 	struct qed_queue_cid *p_cid;
134 };
135 
136 /* Describes a qzone associated with the VF */
137 struct qed_vf_queue {
138 	u16 fw_rx_qid;
139 	u16 fw_tx_qid;
140 
141 	struct qed_vf_queue_cid cids[MAX_QUEUES_PER_QZONE];
142 };
143 
144 enum vf_state {
145 	VF_FREE = 0,		/* VF ready to be acquired holds no resc */
146 	VF_ACQUIRED,		/* VF, acquired, but not initialized */
147 	VF_ENABLED,		/* VF, Enabled */
148 	VF_RESET,		/* VF, FLR'd, pending cleanup */
149 	VF_STOPPED		/* VF, Stopped */
150 };
151 
152 struct qed_vf_vlan_shadow {
153 	bool used;
154 	u16 vid;
155 };
156 
157 struct qed_vf_shadow_config {
158 	/* Shadow copy of all guest vlans */
159 	struct qed_vf_vlan_shadow vlans[QED_ETH_VF_NUM_VLAN_FILTERS + 1];
160 
161 	/* Shadow copy of all configured MACs; Empty if forcing MACs */
162 	u8 macs[QED_ETH_VF_NUM_MAC_FILTERS][ETH_ALEN];
163 	u8 inner_vlan_removal;
164 };
165 
166 /* PFs maintain an array of this structure, per VF */
167 struct qed_vf_info {
168 	struct qed_iov_vf_mbx vf_mbx;
169 	enum vf_state state;
170 	bool b_init;
171 	bool b_malicious;
172 	u8 to_disable;
173 
174 	struct qed_bulletin bulletin;
175 	dma_addr_t vf_bulletin;
176 
177 	/* PF saves a copy of the last VF acquire message */
178 	struct vfpf_acquire_tlv acquire;
179 
180 	u32 concrete_fid;
181 	u16 opaque_fid;
182 	u16 mtu;
183 
184 	u8 vport_id;
185 	u8 relative_vf_id;
186 	u8 abs_vf_id;
187 #define QED_VF_ABS_ID(p_hwfn, p_vf)	(QED_PATH_ID(p_hwfn) ?		      \
188 					 (p_vf)->abs_vf_id + MAX_NUM_VFS_BB : \
189 					 (p_vf)->abs_vf_id)
190 
191 	u8 vport_instance;
192 	u8 num_rxqs;
193 	u8 num_txqs;
194 
195 	u16 rx_coal;
196 	u16 tx_coal;
197 
198 	u8 num_sbs;
199 
200 	u8 num_mac_filters;
201 	u8 num_vlan_filters;
202 
203 	struct qed_vf_queue vf_queues[QED_MAX_VF_CHAINS_PER_PF];
204 	u16 igu_sbs[QED_MAX_VF_CHAINS_PER_PF];
205 	u8 num_active_rxqs;
206 	struct qed_public_vf_info p_vf_info;
207 	bool spoof_chk;
208 	bool req_spoofchk_val;
209 
210 	/* Stores the configuration requested by VF */
211 	struct qed_vf_shadow_config shadow_config;
212 
213 	/* A bitfield using bulletin's valid-map bits, used to indicate
214 	 * which of the bulletin board features have been configured.
215 	 */
216 	u64 configured_features;
217 #define QED_IOV_CONFIGURED_FEATURES_MASK        ((1 << MAC_ADDR_FORCED) | \
218 						 (1 << VLAN_ADDR_FORCED))
219 };
220 
221 /* This structure is part of qed_hwfn and used only for PFs that have sriov
222  * capability enabled.
223  */
224 struct qed_pf_iov {
225 	struct qed_vf_info vfs_array[MAX_NUM_VFS];
226 	u64 pending_flr[QED_VF_ARRAY_LENGTH];
227 
228 	/* Allocate message address continuosuly and split to each VF */
229 	void *mbx_msg_virt_addr;
230 	dma_addr_t mbx_msg_phys_addr;
231 	u32 mbx_msg_size;
232 	void *mbx_reply_virt_addr;
233 	dma_addr_t mbx_reply_phys_addr;
234 	u32 mbx_reply_size;
235 	void *p_bulletins;
236 	dma_addr_t bulletins_phys;
237 	u32 bulletins_size;
238 };
239 
240 enum qed_iov_wq_flag {
241 	QED_IOV_WQ_MSG_FLAG,
242 	QED_IOV_WQ_SET_UNICAST_FILTER_FLAG,
243 	QED_IOV_WQ_BULLETIN_UPDATE_FLAG,
244 	QED_IOV_WQ_STOP_WQ_FLAG,
245 	QED_IOV_WQ_FLR_FLAG,
246 	QED_IOV_WQ_TRUST_FLAG,
247 	QED_IOV_WQ_VF_FORCE_LINK_QUERY_FLAG,
248 };
249 
250 extern const struct qed_iov_hv_ops qed_iov_ops_pass;
251 
252 #ifdef CONFIG_QED_SRIOV
253 /**
254  * qed_iov_is_valid_vfid(): Check if given VF ID @vfid is valid
255  *                          w.r.t. @b_enabled_only value
256  *                          if b_enabled_only = true - only enabled
257  *                          VF id is valid.
258  *                          else any VF id less than max_vfs is valid.
259  *
260  * @p_hwfn: HW device data.
261  * @rel_vf_id: Relative VF ID.
262  * @b_enabled_only: consider only enabled VF.
263  * @b_non_malicious: true iff we want to validate vf isn't malicious.
264  *
265  * Return: bool - true for valid VF ID
266  */
267 bool qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn,
268 			   int rel_vf_id,
269 			   bool b_enabled_only, bool b_non_malicious);
270 
271 /**
272  * qed_iov_get_next_active_vf(): Given a VF index, return index of
273  *                               next [including that] active VF.
274  *
275  * @p_hwfn: HW device data.
276  * @rel_vf_id: VF ID.
277  *
278  * Return: MAX_NUM_VFS in case no further active VFs, otherwise index.
279  */
280 u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, u16 rel_vf_id);
281 
282 void qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn,
283 				    int vfid, u16 vxlan_port, u16 geneve_port);
284 
285 /**
286  * qed_iov_hw_info(): Read sriov related information and allocated resources
287  *                    reads from configuration space, shmem, etc.
288  *
289  * @p_hwfn: HW device data.
290  *
291  * Return: Int.
292  */
293 int qed_iov_hw_info(struct qed_hwfn *p_hwfn);
294 
295 /**
296  * qed_add_tlv(): place a given tlv on the tlv buffer at next offset
297  *
298  * @p_hwfn: HW device data.
299  * @offset: offset.
300  * @type: Type
301  * @length: Length.
302  *
303  * Return: pointer to the newly placed tlv
304  */
305 void *qed_add_tlv(struct qed_hwfn *p_hwfn, u8 **offset, u16 type, u16 length);
306 
307 /**
308  * qed_dp_tlv_list(): list the types and lengths of the tlvs on the buffer
309  *
310  * @p_hwfn: HW device data.
311  * @tlvs_list: Tlvs_list.
312  *
313  * Return: Void.
314  */
315 void qed_dp_tlv_list(struct qed_hwfn *p_hwfn, void *tlvs_list);
316 
317 /**
318  * qed_sriov_vfpf_malicious(): Handle malicious VF/PF.
319  *
320  * @p_hwfn: HW device data.
321  * @p_data: Pointer to data.
322  *
323  * Return: Void.
324  */
325 void qed_sriov_vfpf_malicious(struct qed_hwfn *p_hwfn,
326 			      struct fw_err_data *p_data);
327 
328 /**
329  * qed_sriov_eqe_event(): Callback for SRIOV events.
330  *
331  * @p_hwfn: HW device data.
332  * @opcode: Opcode.
333  * @echo: Echo.
334  * @data: data
335  * @fw_return_code: FW return code.
336  *
337  * Return: Int.
338  */
339 int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn, u8 opcode, __le16 echo,
340 			union event_ring_data *data, u8  fw_return_code);
341 
342 /**
343  * qed_iov_alloc(): allocate sriov related resources
344  *
345  * @p_hwfn: HW device data.
346  *
347  * Return: Int.
348  */
349 int qed_iov_alloc(struct qed_hwfn *p_hwfn);
350 
351 /**
352  * qed_iov_setup(): setup sriov related resources
353  *
354  * @p_hwfn: HW device data.
355  *
356  * Return: Void.
357  */
358 void qed_iov_setup(struct qed_hwfn *p_hwfn);
359 
360 /**
361  * qed_iov_free(): free sriov related resources
362  *
363  * @p_hwfn: HW device data.
364  *
365  * Return: Void.
366  */
367 void qed_iov_free(struct qed_hwfn *p_hwfn);
368 
369 /**
370  * qed_iov_free_hw_info(): free sriov related memory that was
371  *                          allocated during hw_prepare
372  *
373  * @cdev: Qed dev pointer.
374  *
375  * Return: Void.
376  */
377 void qed_iov_free_hw_info(struct qed_dev *cdev);
378 
379 /**
380  * qed_iov_mark_vf_flr(): Mark structs of vfs that have been FLR-ed.
381  *
382  * @p_hwfn: HW device data.
383  * @disabled_vfs: bitmask of all VFs on path that were FLRed
384  *
385  * Return: true iff one of the PF's vfs got FLRed. false otherwise.
386  */
387 bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, u32 *disabled_vfs);
388 
389 /**
390  * qed_iov_search_list_tlvs(): Search extended TLVs in request/reply buffer.
391  *
392  * @p_hwfn: HW device data.
393  * @p_tlvs_list: Pointer to tlvs list
394  * @req_type: Type of TLV
395  *
396  * Return: pointer to tlv type if found, otherwise returns NULL.
397  */
398 void *qed_iov_search_list_tlvs(struct qed_hwfn *p_hwfn,
399 			       void *p_tlvs_list, u16 req_type);
400 
401 void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first);
402 int qed_iov_wq_start(struct qed_dev *cdev);
403 
404 void qed_schedule_iov(struct qed_hwfn *hwfn, enum qed_iov_wq_flag flag);
405 void qed_vf_start_iov_wq(struct qed_dev *cdev);
406 int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled);
407 void qed_inform_vf_link_state(struct qed_hwfn *hwfn);
408 #else
409 static inline bool
410 qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn,
411 		      int rel_vf_id, bool b_enabled_only, bool b_non_malicious)
412 {
413 	return false;
414 }
415 
416 static inline u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn,
417 					     u16 rel_vf_id)
418 {
419 	return MAX_NUM_VFS;
420 }
421 
422 static inline void
423 qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn, int vfid,
424 			       u16 vxlan_port, u16 geneve_port)
425 {
426 }
427 
428 static inline int qed_iov_hw_info(struct qed_hwfn *p_hwfn)
429 {
430 	return 0;
431 }
432 
433 static inline int qed_iov_alloc(struct qed_hwfn *p_hwfn)
434 {
435 	return 0;
436 }
437 
438 static inline void qed_iov_setup(struct qed_hwfn *p_hwfn)
439 {
440 }
441 
442 static inline void qed_iov_free(struct qed_hwfn *p_hwfn)
443 {
444 }
445 
446 static inline void qed_iov_free_hw_info(struct qed_dev *cdev)
447 {
448 }
449 
450 static inline bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn,
451 				       u32 *disabled_vfs)
452 {
453 	return false;
454 }
455 
456 static inline void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first)
457 {
458 }
459 
460 static inline int qed_iov_wq_start(struct qed_dev *cdev)
461 {
462 	return 0;
463 }
464 
465 static inline void qed_schedule_iov(struct qed_hwfn *hwfn,
466 				    enum qed_iov_wq_flag flag)
467 {
468 }
469 
470 static inline void qed_vf_start_iov_wq(struct qed_dev *cdev)
471 {
472 }
473 
474 static inline int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled)
475 {
476 	return 0;
477 }
478 
479 static inline void qed_inform_vf_link_state(struct qed_hwfn *hwfn)
480 {
481 }
482 
483 static inline void qed_sriov_vfpf_malicious(struct qed_hwfn *p_hwfn,
484 					    struct fw_err_data *p_data)
485 {
486 }
487 
488 static inline int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn, u8 opcode,
489 				      __le16 echo, union event_ring_data *data,
490 				      u8  fw_return_code)
491 {
492 	return 0;
493 }
494 #endif
495 
496 #define qed_for_each_vf(_p_hwfn, _i)			  \
497 	for (_i = qed_iov_get_next_active_vf(_p_hwfn, 0); \
498 	     _i < MAX_NUM_VFS;				  \
499 	     _i = qed_iov_get_next_active_vf(_p_hwfn, _i + 1))
500 
501 #endif
502