1 /* QLogic qed NIC Driver
2 * Copyright (c) 2015 QLogic Corporation
4 * This software is available under the terms of the GNU General Public License
5 * (GPL) Version 2, available from the file COPYING in the main directory of
11 #include <linux/types.h>
13 #define QED_VF_ARRAY_LENGTH (3)
15 #define IS_VF(cdev) ((cdev)->b_is_vf)
16 #define IS_PF(cdev) (!((cdev)->b_is_vf))
17 #ifdef CONFIG_QED_SRIOV
18 #define IS_PF_SRIOV(p_hwfn) (!!((p_hwfn)->cdev->p_iov_info))
20 #define IS_PF_SRIOV(p_hwfn) (0)
22 #define IS_PF_SRIOV_ALLOC(p_hwfn) (!!((p_hwfn)->pf_iov_info))
24 #define QED_MAX_VF_CHAINS_PER_PF 16
25 #define QED_ETH_VF_NUM_VLAN_FILTERS 2
27 #define QED_ETH_MAX_VF_NUM_VLAN_FILTERS \
28 (MAX_NUM_VFS * QED_ETH_VF_NUM_VLAN_FILTERS)
30 enum qed_iov_vport_update_flag {
31 QED_IOV_VP_UPDATE_ACTIVATE,
32 QED_IOV_VP_UPDATE_VLAN_STRIP,
33 QED_IOV_VP_UPDATE_TX_SWITCH,
34 QED_IOV_VP_UPDATE_MCAST,
35 QED_IOV_VP_UPDATE_ACCEPT_PARAM,
36 QED_IOV_VP_UPDATE_RSS,
37 QED_IOV_VP_UPDATE_ACCEPT_ANY_VLAN,
38 QED_IOV_VP_UPDATE_SGE_TPA,
39 QED_IOV_VP_UPDATE_MAX,
42 struct qed_public_vf_info {
43 /* These copies will later be reflected in the bulletin board,
44 * but this copy should be newer.
50 /* This struct is part of qed_dev and contains data relevant to all hwfns;
51 * Initialized only if SR-IOV cpabability is exposed in PCIe config space.
53 struct qed_hw_sriov_info {
54 int pos; /* capability position */
55 int nres; /* number of resources */
56 u32 cap; /* SR-IOV Capabilities */
57 u16 ctrl; /* SR-IOV Control */
58 u16 total_vfs; /* total VFs associated with the PF */
59 u16 num_vfs; /* number of vfs that have been started */
60 u16 initial_vfs; /* initial VFs associated with the PF */
61 u16 nr_virtfn; /* number of VFs available */
62 u16 offset; /* first VF Routing ID offset */
63 u16 stride; /* following VF stride */
64 u16 vf_device_id; /* VF device id */
65 u32 pgsz; /* page size for BAR alignment */
66 u8 link; /* Function Dependency Link */
71 /* This mailbox is maintained per VF in its PF contains all information
72 * required for sending / receiving a message.
74 struct qed_iov_vf_mbx {
75 union vfpf_tlvs *req_virt;
77 union pfvf_tlvs *reply_virt;
78 dma_addr_t reply_phys;
80 /* Address in VF where a pending message is located */
81 dma_addr_t pending_req;
85 /* saved VF request header */
86 struct vfpf_first_tlv first_tlv;
89 struct qed_vf_q_info {
98 VF_FREE = 0, /* VF ready to be acquired holds no resc */
99 VF_ACQUIRED, /* VF, acquired, but not initalized */
100 VF_ENABLED, /* VF, Enabled */
101 VF_RESET, /* VF, FLR'd, pending cleanup */
102 VF_STOPPED /* VF, Stopped */
105 struct qed_vf_vlan_shadow {
110 struct qed_vf_shadow_config {
111 /* Shadow copy of all guest vlans */
112 struct qed_vf_vlan_shadow vlans[QED_ETH_VF_NUM_VLAN_FILTERS + 1];
114 u8 inner_vlan_removal;
117 /* PFs maintain an array of this structure, per VF */
119 struct qed_iov_vf_mbx vf_mbx;
124 struct qed_bulletin bulletin;
125 dma_addr_t vf_bulletin;
134 #define QED_VF_ABS_ID(p_hwfn, p_vf) (QED_PATH_ID(p_hwfn) ? \
135 (p_vf)->abs_vf_id + MAX_NUM_VFS_BB : \
146 struct qed_vf_q_info vf_queues[QED_MAX_VF_CHAINS_PER_PF];
147 u16 igu_sbs[QED_MAX_VF_CHAINS_PER_PF];
149 struct qed_public_vf_info p_vf_info;
151 /* Stores the configuration requested by VF */
152 struct qed_vf_shadow_config shadow_config;
154 /* A bitfield using bulletin's valid-map bits, used to indicate
155 * which of the bulletin board features have been configured.
157 u64 configured_features;
158 #define QED_IOV_CONFIGURED_FEATURES_MASK ((1 << MAC_ADDR_FORCED) | \
159 (1 << VLAN_ADDR_FORCED))
162 /* This structure is part of qed_hwfn and used only for PFs that have sriov
163 * capability enabled.
166 struct qed_vf_info vfs_array[MAX_NUM_VFS];
167 u64 pending_events[QED_VF_ARRAY_LENGTH];
168 u64 pending_flr[QED_VF_ARRAY_LENGTH];
170 /* Allocate message address continuosuly and split to each VF */
171 void *mbx_msg_virt_addr;
172 dma_addr_t mbx_msg_phys_addr;
174 void *mbx_reply_virt_addr;
175 dma_addr_t mbx_reply_phys_addr;
178 dma_addr_t bulletins_phys;
182 enum qed_iov_wq_flag {
184 QED_IOV_WQ_SET_UNICAST_FILTER_FLAG,
185 QED_IOV_WQ_BULLETIN_UPDATE_FLAG,
186 QED_IOV_WQ_STOP_WQ_FLAG,
190 #ifdef CONFIG_QED_SRIOV
192 * @brief - Given a VF index, return index of next [including that] active VF.
197 * @return MAX_NUM_VFS in case no further active VFs, otherwise index.
199 u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, u16 rel_vf_id);
202 * @brief Read sriov related information and allocated resources
203 * reads from configuraiton space, shmem, etc.
209 int qed_iov_hw_info(struct qed_hwfn *p_hwfn);
212 * @brief qed_add_tlv - place a given tlv on the tlv buffer at next offset
219 * @return pointer to the newly placed tlv
221 void *qed_add_tlv(struct qed_hwfn *p_hwfn, u8 **offset, u16 type, u16 length);
224 * @brief list the types and lengths of the tlvs on the buffer
229 void qed_dp_tlv_list(struct qed_hwfn *p_hwfn, void *tlvs_list);
232 * @brief qed_iov_alloc - allocate sriov related resources
238 int qed_iov_alloc(struct qed_hwfn *p_hwfn);
241 * @brief qed_iov_setup - setup sriov related resources
246 void qed_iov_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt);
249 * @brief qed_iov_free - free sriov related resources
253 void qed_iov_free(struct qed_hwfn *p_hwfn);
256 * @brief free sriov related memory that was allocated during hw_prepare
260 void qed_iov_free_hw_info(struct qed_dev *cdev);
263 * @brief qed_sriov_eqe_event - handle async sriov event arrived on eqe.
270 int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn,
271 u8 opcode, __le16 echo, union event_ring_data *data);
274 * @brief Mark structs of vfs that have been FLR-ed.
277 * @param disabled_vfs - bitmask of all VFs on path that were FLRed
279 * @return 1 iff one of the PF's vfs got FLRed. 0 otherwise.
281 int qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, u32 *disabled_vfs);
284 * @brief Search extended TLVs in request/reply buffer.
287 * @param p_tlvs_list - Pointer to tlvs list
288 * @param req_type - Type of TLV
290 * @return pointer to tlv type if found, otherwise returns NULL.
292 void *qed_iov_search_list_tlvs(struct qed_hwfn *p_hwfn,
293 void *p_tlvs_list, u16 req_type);
295 void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first);
296 int qed_iov_wq_start(struct qed_dev *cdev);
298 void qed_schedule_iov(struct qed_hwfn *hwfn, enum qed_iov_wq_flag flag);
299 void qed_vf_start_iov_wq(struct qed_dev *cdev);
300 int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled);
301 void qed_inform_vf_link_state(struct qed_hwfn *hwfn);
303 static inline u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn,
309 static inline int qed_iov_hw_info(struct qed_hwfn *p_hwfn)
314 static inline int qed_iov_alloc(struct qed_hwfn *p_hwfn)
319 static inline void qed_iov_setup(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
323 static inline void qed_iov_free(struct qed_hwfn *p_hwfn)
327 static inline void qed_iov_free_hw_info(struct qed_dev *cdev)
331 static inline int qed_sriov_eqe_event(struct qed_hwfn *p_hwfn,
333 __le16 echo, union event_ring_data *data)
338 static inline int qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn,
344 static inline void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first)
348 static inline int qed_iov_wq_start(struct qed_dev *cdev)
353 static inline void qed_schedule_iov(struct qed_hwfn *hwfn,
354 enum qed_iov_wq_flag flag)
358 static inline void qed_vf_start_iov_wq(struct qed_dev *cdev)
362 static inline int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled)
367 static inline void qed_inform_vf_link_state(struct qed_hwfn *hwfn)
372 #define qed_for_each_vf(_p_hwfn, _i) \
373 for (_i = qed_iov_get_next_active_vf(_p_hwfn, 0); \
375 _i = qed_iov_get_next_active_vf(_p_hwfn, _i + 1))