1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Atlantic Network Driver
3  *
4  * Copyright (C) 2014-2019 aQuantia Corporation
5  * Copyright (C) 2019-2020 Marvell International Ltd.
6  */
7 
8 /* File aq_nic.h: Declaration of common code for NIC. */
9 
10 #ifndef AQ_NIC_H
11 #define AQ_NIC_H
12 
13 #include <linux/ethtool.h>
14 
15 #include "aq_common.h"
16 #include "aq_rss.h"
17 #include "aq_hw.h"
18 
19 struct aq_ring_s;
20 struct aq_hw_ops;
21 struct aq_fw_s;
22 struct aq_vec_s;
23 struct aq_macsec_cfg;
24 struct aq_ptp_s;
25 enum aq_rx_filter_type;
26 
27 enum aq_fc_mode {
28 	AQ_NIC_FC_OFF = 0,
29 	AQ_NIC_FC_TX,
30 	AQ_NIC_FC_RX,
31 	AQ_NIC_FC_FULL,
32 };
33 
34 struct aq_fc_info {
35 	enum aq_fc_mode req;
36 	enum aq_fc_mode cur;
37 };
38 
39 struct aq_nic_cfg_s {
40 	const struct aq_hw_caps_s *aq_hw_caps;
41 	u64 features;
42 	u32 rxds;		/* rx ring size, descriptors # */
43 	u32 txds;		/* tx ring size, descriptors # */
44 	u32 vecs;		/* allocated rx/tx vectors */
45 	u32 link_irq_vec;
46 	u32 irq_type;
47 	u32 itr;
48 	u16 rx_itr;
49 	u16 tx_itr;
50 	u32 rxpageorder;
51 	u32 num_rss_queues;
52 	u32 mtu;
53 	struct aq_fc_info fc;
54 	u32 link_speed_msk;
55 	u32 wol;
56 	u8 is_vlan_rx_strip;
57 	u8 is_vlan_tx_insert;
58 	bool is_vlan_force_promisc;
59 	u16 is_mc_list_enabled;
60 	u16 mc_list_count;
61 	bool is_autoneg;
62 	bool is_polling;
63 	bool is_rss;
64 	bool is_lro;
65 	bool is_qos;
66 	bool is_ptp;
67 	bool is_media_detect;
68 	int downshift_counter;
69 	enum aq_tc_mode tc_mode;
70 	u32 priv_flags;
71 	u8  tcs;
72 	u8 prio_tc_map[8];
73 	u32 tc_max_rate[AQ_CFG_TCS_MAX];
74 	unsigned long tc_min_rate_msk;
75 	u32 tc_min_rate[AQ_CFG_TCS_MAX];
76 	struct aq_rss_parameters aq_rss;
77 	u32 eee_speeds;
78 };
79 
80 #define AQ_NIC_FLAG_STARTED     0x00000004U
81 #define AQ_NIC_FLAG_STOPPING    0x00000008U
82 #define AQ_NIC_FLAG_RESETTING   0x00000010U
83 #define AQ_NIC_FLAG_CLOSING     0x00000020U
84 #define AQ_NIC_PTP_DPATH_UP     0x02000000U
85 #define AQ_NIC_LINK_DOWN        0x04000000U
86 #define AQ_NIC_FLAG_ERR_UNPLUG  0x40000000U
87 #define AQ_NIC_FLAG_ERR_HW      0x80000000U
88 
89 #define AQ_NIC_QUIRK_BAD_PTP    BIT(0)
90 
91 #define AQ_NIC_WOL_MODES        (WAKE_MAGIC |\
92 				 WAKE_PHY)
93 
94 #define AQ_NIC_CFG_RING_PER_TC(_NIC_CFG_) \
95 	(((_NIC_CFG_)->tc_mode == AQ_TC_MODE_4TCS) ? 8 : 4)
96 
97 #define AQ_NIC_CFG_TCVEC2RING(_NIC_CFG_, _TC_, _VEC_) \
98 	((_TC_) * AQ_NIC_CFG_RING_PER_TC(_NIC_CFG_) + (_VEC_))
99 
100 #define AQ_NIC_RING2QMAP(_NIC_, _ID_) \
101 	((_ID_) / AQ_NIC_CFG_RING_PER_TC(&(_NIC_)->aq_nic_cfg) * \
102 		(_NIC_)->aq_vecs + \
103 	((_ID_) % AQ_NIC_CFG_RING_PER_TC(&(_NIC_)->aq_nic_cfg)))
104 
105 struct aq_hw_rx_fl2 {
106 	struct aq_rx_filter_vlan aq_vlans[AQ_VLAN_MAX_FILTERS];
107 };
108 
109 struct aq_hw_rx_fl3l4 {
110 	u8 active_ipv4;
111 	u8 active_ipv6:2;
112 	u8 is_ipv6;
113 	u8 reserved_count;
114 };
115 
116 struct aq_hw_rx_fltrs_s {
117 	struct hlist_head     filter_list;
118 	u16                   active_filters;
119 	struct aq_hw_rx_fl2   fl2;
120 	struct aq_hw_rx_fl3l4 fl3l4;
121 	/* filter ether type */
122 	u8 fet_reserved_count;
123 };
124 
125 struct aq_nic_s {
126 	atomic_t flags;
127 	u32 msg_enable;
128 	struct aq_vec_s *aq_vec[AQ_CFG_VECS_MAX];
129 	struct aq_ring_s *aq_ring_tx[AQ_HW_QUEUES_MAX];
130 	struct aq_hw_s *aq_hw;
131 	struct net_device *ndev;
132 	unsigned int aq_vecs;
133 	unsigned int packet_filter;
134 	unsigned int power_state;
135 	u8 port;
136 	const struct aq_hw_ops *aq_hw_ops;
137 	const struct aq_fw_ops *aq_fw_ops;
138 	struct aq_nic_cfg_s aq_nic_cfg;
139 	struct timer_list service_timer;
140 	struct work_struct service_task;
141 	struct timer_list polling_timer;
142 	struct aq_hw_link_status_s link_status;
143 	struct {
144 		u32 count;
145 		u8 ar[AQ_HW_MULTICAST_ADDRESS_MAX][ETH_ALEN];
146 	} mc_list;
147 	/* Bitmask of currently assigned vlans from linux */
148 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
149 
150 	struct pci_dev *pdev;
151 	unsigned int msix_entry_mask;
152 	u32 irqvecs;
153 	/* mutex to serialize FW interface access operations */
154 	struct mutex fwreq_mutex;
155 #if IS_ENABLED(CONFIG_MACSEC)
156 	struct aq_macsec_cfg *macsec_cfg;
157 #endif
158 	/* PTP support */
159 	struct aq_ptp_s *aq_ptp;
160 	struct aq_hw_rx_fltrs_s aq_hw_rx_fltrs;
161 };
162 
163 static inline struct device *aq_nic_get_dev(struct aq_nic_s *self)
164 {
165 	return self->ndev->dev.parent;
166 }
167 
168 void aq_nic_ndev_init(struct aq_nic_s *self);
169 struct aq_nic_s *aq_nic_alloc_hot(struct net_device *ndev);
170 void aq_nic_set_tx_ring(struct aq_nic_s *self, unsigned int idx,
171 			struct aq_ring_s *ring);
172 struct net_device *aq_nic_get_ndev(struct aq_nic_s *self);
173 int aq_nic_init(struct aq_nic_s *self);
174 void aq_nic_cfg_start(struct aq_nic_s *self);
175 int aq_nic_ndev_register(struct aq_nic_s *self);
176 void aq_nic_ndev_free(struct aq_nic_s *self);
177 int aq_nic_start(struct aq_nic_s *self);
178 unsigned int aq_nic_map_skb(struct aq_nic_s *self, struct sk_buff *skb,
179 			    struct aq_ring_s *ring);
180 int aq_nic_xmit(struct aq_nic_s *self, struct sk_buff *skb);
181 int aq_nic_get_regs(struct aq_nic_s *self, struct ethtool_regs *regs, void *p);
182 int aq_nic_get_regs_count(struct aq_nic_s *self);
183 u64 *aq_nic_get_stats(struct aq_nic_s *self, u64 *data);
184 int aq_nic_stop(struct aq_nic_s *self);
185 void aq_nic_deinit(struct aq_nic_s *self, bool link_down);
186 void aq_nic_set_power(struct aq_nic_s *self);
187 void aq_nic_free_hot_resources(struct aq_nic_s *self);
188 void aq_nic_free_vectors(struct aq_nic_s *self);
189 int aq_nic_realloc_vectors(struct aq_nic_s *self);
190 int aq_nic_set_mtu(struct aq_nic_s *self, int new_mtu);
191 int aq_nic_set_mac(struct aq_nic_s *self, struct net_device *ndev);
192 int aq_nic_set_packet_filter(struct aq_nic_s *self, unsigned int flags);
193 int aq_nic_set_multicast_list(struct aq_nic_s *self, struct net_device *ndev);
194 unsigned int aq_nic_get_link_speed(struct aq_nic_s *self);
195 void aq_nic_get_link_ksettings(struct aq_nic_s *self,
196 			       struct ethtool_link_ksettings *cmd);
197 int aq_nic_set_link_ksettings(struct aq_nic_s *self,
198 			      const struct ethtool_link_ksettings *cmd);
199 struct aq_nic_cfg_s *aq_nic_get_cfg(struct aq_nic_s *self);
200 u32 aq_nic_get_fw_version(struct aq_nic_s *self);
201 int aq_nic_set_loopback(struct aq_nic_s *self);
202 int aq_nic_set_downshift(struct aq_nic_s *self, int val);
203 int aq_nic_set_media_detect(struct aq_nic_s *self, int val);
204 int aq_nic_update_interrupt_moderation_settings(struct aq_nic_s *self);
205 void aq_nic_shutdown(struct aq_nic_s *self);
206 u8 aq_nic_reserve_filter(struct aq_nic_s *self, enum aq_rx_filter_type type);
207 void aq_nic_release_filter(struct aq_nic_s *self, enum aq_rx_filter_type type,
208 			   u32 location);
209 int aq_nic_setup_tc_mqprio(struct aq_nic_s *self, u32 tcs, u8 *prio_tc_map);
210 int aq_nic_setup_tc_max_rate(struct aq_nic_s *self, const unsigned int tc,
211 			     const u32 max_rate);
212 int aq_nic_setup_tc_min_rate(struct aq_nic_s *self, const unsigned int tc,
213 			     const u32 min_rate);
214 #endif /* AQ_NIC_H */
215