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1/* QLogic qede NIC Driver
2* Copyright (c) 2015 QLogic Corporation
3*
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
6* this source tree.
7*/
8
9#ifndef _QEDE_H_
10#define _QEDE_H_
11#include <linux/compiler.h>
12#include <linux/version.h>
13#include <linux/workqueue.h>
14#include <linux/netdevice.h>
15#include <linux/interrupt.h>
16#include <linux/bitmap.h>
17#include <linux/kernel.h>
18#include <linux/mutex.h>
19#include <linux/io.h>
20#include <linux/qed/common_hsi.h>
21#include <linux/qed/eth_common.h>
22#include <linux/qed/qed_if.h>
23#include <linux/qed/qed_chain.h>
24#include <linux/qed/qed_eth_if.h>
25
26#define QEDE_MAJOR_VERSION 8
831a8e6c 27#define QEDE_MINOR_VERSION 10
05fafbfb 28#define QEDE_REVISION_VERSION 9
7c2d7d74 29#define QEDE_ENGINEERING_VERSION 20
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30#define DRV_MODULE_VERSION __stringify(QEDE_MAJOR_VERSION) "." \
31 __stringify(QEDE_MINOR_VERSION) "." \
32 __stringify(QEDE_REVISION_VERSION) "." \
33 __stringify(QEDE_ENGINEERING_VERSION)
34
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35#define DRV_MODULE_SYM qede
36
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37struct qede_stats {
38 u64 no_buff_discards;
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39 u64 packet_too_big_discard;
40 u64 ttl0_discard;
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41 u64 rx_ucast_bytes;
42 u64 rx_mcast_bytes;
43 u64 rx_bcast_bytes;
44 u64 rx_ucast_pkts;
45 u64 rx_mcast_pkts;
46 u64 rx_bcast_pkts;
47 u64 mftag_filter_discards;
48 u64 mac_filter_discards;
49 u64 tx_ucast_bytes;
50 u64 tx_mcast_bytes;
51 u64 tx_bcast_bytes;
52 u64 tx_ucast_pkts;
53 u64 tx_mcast_pkts;
54 u64 tx_bcast_pkts;
55 u64 tx_err_drop_pkts;
56 u64 coalesced_pkts;
57 u64 coalesced_events;
58 u64 coalesced_aborts_num;
59 u64 non_coalesced_pkts;
60 u64 coalesced_bytes;
61
62 /* port */
63 u64 rx_64_byte_packets;
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64 u64 rx_65_to_127_byte_packets;
65 u64 rx_128_to_255_byte_packets;
66 u64 rx_256_to_511_byte_packets;
67 u64 rx_512_to_1023_byte_packets;
68 u64 rx_1024_to_1518_byte_packets;
69 u64 rx_1519_to_1522_byte_packets;
70 u64 rx_1519_to_2047_byte_packets;
71 u64 rx_2048_to_4095_byte_packets;
72 u64 rx_4096_to_9216_byte_packets;
73 u64 rx_9217_to_16383_byte_packets;
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74 u64 rx_crc_errors;
75 u64 rx_mac_crtl_frames;
76 u64 rx_pause_frames;
77 u64 rx_pfc_frames;
78 u64 rx_align_errors;
79 u64 rx_carrier_errors;
80 u64 rx_oversize_packets;
81 u64 rx_jabbers;
82 u64 rx_undersize_packets;
83 u64 rx_fragments;
84 u64 tx_64_byte_packets;
85 u64 tx_65_to_127_byte_packets;
86 u64 tx_128_to_255_byte_packets;
87 u64 tx_256_to_511_byte_packets;
88 u64 tx_512_to_1023_byte_packets;
89 u64 tx_1024_to_1518_byte_packets;
90 u64 tx_1519_to_2047_byte_packets;
91 u64 tx_2048_to_4095_byte_packets;
92 u64 tx_4096_to_9216_byte_packets;
93 u64 tx_9217_to_16383_byte_packets;
94 u64 tx_pause_frames;
95 u64 tx_pfc_frames;
96 u64 tx_lpi_entry_count;
97 u64 tx_total_collisions;
98 u64 brb_truncates;
99 u64 brb_discards;
100 u64 tx_mac_ctrl_frames;
101};
102
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103struct qede_vlan {
104 struct list_head list;
105 u16 vid;
106 bool configured;
107};
108
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109struct qede_dev {
110 struct qed_dev *cdev;
111 struct net_device *ndev;
112 struct pci_dev *pdev;
113
114 u32 dp_module;
115 u8 dp_level;
116
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117 u32 flags;
118#define QEDE_FLAG_IS_VF BIT(0)
119#define IS_VF(edev) (!!((edev)->flags & QEDE_FLAG_IS_VF))
120
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121 const struct qed_eth_ops *ops;
122
123 struct qed_dev_eth_info dev_info;
124#define QEDE_MAX_RSS_CNT(edev) ((edev)->dev_info.num_queues)
125#define QEDE_MAX_TSS_CNT(edev) ((edev)->dev_info.num_queues * \
126 (edev)->dev_info.num_tc)
127
2950219d 128 struct qede_fastpath *fp_array;
8edf049d 129 u16 req_rss;
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130 u16 num_rss;
131 u8 num_tc;
132#define QEDE_RSS_CNT(edev) ((edev)->num_rss)
133#define QEDE_TSS_CNT(edev) ((edev)->num_rss * \
134 (edev)->num_tc)
135#define QEDE_TSS_IDX(edev, txqidx) ((txqidx) % (edev)->num_rss)
136#define QEDE_TC_IDX(edev, txqidx) ((txqidx) / (edev)->num_rss)
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137#define QEDE_TX_QUEUE(edev, txqidx) \
138 (&(edev)->fp_array[QEDE_TSS_IDX((edev), (txqidx))].txqs[QEDE_TC_IDX( \
139 (edev), (txqidx))])
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140
141 struct qed_int_info int_info;
142 unsigned char primary_mac[ETH_ALEN];
143
144 /* Smaller private varaiant of the RTNL lock */
145 struct mutex qede_lock;
146 u32 state; /* Protected by qede_lock */
2950219d 147 u16 rx_buf_size;
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148 u32 rx_copybreak;
149
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150 /* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */
151#define ETH_OVERHEAD (ETH_HLEN + 8 + 8)
152 /* Max supported alignment is 256 (8 shift)
153 * minimal alignment shift 6 is optimal for 57xxx HW performance
154 */
155#define QEDE_RX_ALIGN_SHIFT max(6, min(8, L1_CACHE_SHIFT))
156 /* We assume skb_build() uses sizeof(struct skb_shared_info) bytes
157 * at the end of skb->data, to avoid wasting a full cache line.
158 * This reduces memory use (skb->truesize).
159 */
160#define QEDE_FW_RX_ALIGN_END \
161 max_t(u64, 1UL << QEDE_RX_ALIGN_SHIFT, \
162 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))
163
133fac0e 164 struct qede_stats stats;
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165#define QEDE_RSS_INDIR_INITED BIT(0)
166#define QEDE_RSS_KEY_INITED BIT(1)
167#define QEDE_RSS_CAPS_INITED BIT(2)
168 u32 rss_params_inited; /* bit-field to track initialized rss params */
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169 struct qed_update_vport_rss_params rss_params;
170 u16 q_num_rx_buffers; /* Must be a power of two */
171 u16 q_num_tx_buffers; /* Must be a power of two */
0d8e0aa0 172
55482edc 173 bool gro_disable;
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174 struct list_head vlan_list;
175 u16 configured_vlans;
176 u16 non_configured_vlans;
177 bool accept_any_vlan;
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178 struct delayed_work sp_task;
179 unsigned long sp_flags;
b18e170c 180 u16 vxlan_dst_port;
9a109dd0 181 u16 geneve_dst_port;
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182};
183
184enum QEDE_STATE {
185 QEDE_STATE_CLOSED,
186 QEDE_STATE_OPEN,
187};
188
189#define HILO_U64(hi, lo) ((((u64)(hi)) << 32) + (lo))
190
191#define MAX_NUM_TC 8
192#define MAX_NUM_PRI 8
193
194/* The driver supports the new build_skb() API:
195 * RX ring buffer contains pointer to kmalloc() data only,
196 * skb are built only after the frame was DMA-ed.
197 */
198struct sw_rx_data {
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199 struct page *data;
200 dma_addr_t mapping;
201 unsigned int page_offset;
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202};
203
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204enum qede_agg_state {
205 QEDE_AGG_STATE_NONE = 0,
206 QEDE_AGG_STATE_START = 1,
207 QEDE_AGG_STATE_ERROR = 2
208};
209
210struct qede_agg_info {
211 struct sw_rx_data replace_buf;
212 dma_addr_t replace_buf_mapping;
213 struct sw_rx_data start_buf;
214 dma_addr_t start_buf_mapping;
215 struct eth_fast_path_rx_tpa_start_cqe start_cqe;
216 enum qede_agg_state agg_state;
217 struct sk_buff *skb;
218 int frag_id;
219 u16 vlan_tag;
220};
221
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222struct qede_rx_queue {
223 __le16 *hw_cons_ptr;
224 struct sw_rx_data *sw_rx_ring;
225 u16 sw_rx_cons;
226 u16 sw_rx_prod;
227 struct qed_chain rx_bd_ring;
228 struct qed_chain rx_comp_ring;
229 void __iomem *hw_rxq_prod_addr;
230
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231 /* GRO */
232 struct qede_agg_info tpa_info[ETH_TPA_MAX_AGGS_NUM];
233
2950219d 234 int rx_buf_size;
fc48b7a6 235 unsigned int rx_buf_seg_size;
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236
237 u16 num_rx_buffers;
238 u16 rxq_id;
239
68db9ec2 240 u64 rcv_pkts;
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241 u64 rx_hw_errors;
242 u64 rx_alloc_errors;
c72a6125 243 u64 rx_ip_frags;
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244};
245
246union db_prod {
247 struct eth_db_data data;
248 u32 raw;
249};
250
251struct sw_tx_bd {
252 struct sk_buff *skb;
253 u8 flags;
254/* Set on the first BD descriptor when there is a split BD */
255#define QEDE_TSO_SPLIT_BD BIT(0)
256};
257
258struct qede_tx_queue {
259 int index; /* Queue index */
260 __le16 *hw_cons_ptr;
261 struct sw_tx_bd *sw_tx_ring;
262 u16 sw_tx_cons;
263 u16 sw_tx_prod;
264 struct qed_chain tx_pbl;
265 void __iomem *doorbell_addr;
266 union db_prod tx_db;
267
268 u16 num_tx_buffers;
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269 u64 xmit_pkts;
270 u64 stopped_cnt;
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271
272 bool is_legacy;
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273};
274
275#define BD_UNMAP_ADDR(bd) HILO_U64(le32_to_cpu((bd)->addr.hi), \
276 le32_to_cpu((bd)->addr.lo))
277#define BD_SET_UNMAP_ADDR_LEN(bd, maddr, len) \
278 do { \
279 (bd)->addr.hi = cpu_to_le32(upper_32_bits(maddr)); \
280 (bd)->addr.lo = cpu_to_le32(lower_32_bits(maddr)); \
281 (bd)->nbytes = cpu_to_le16(len); \
282 } while (0)
283#define BD_UNMAP_LEN(bd) (le16_to_cpu((bd)->nbytes))
284
285struct qede_fastpath {
286 struct qede_dev *edev;
287 u8 rss_id;
288 struct napi_struct napi;
289 struct qed_sb_info *sb_info;
290 struct qede_rx_queue *rxq;
291 struct qede_tx_queue *txqs;
292
293#define VEC_NAME_SIZE (sizeof(((struct net_device *)0)->name) + 8)
294 char name[VEC_NAME_SIZE];
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295};
296
297/* Debug print definitions */
298#define DP_NAME(edev) ((edev)->ndev->name)
299
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300#define XMIT_PLAIN 0
301#define XMIT_L4_CSUM BIT(0)
302#define XMIT_LSO BIT(1)
303#define XMIT_ENC BIT(2)
304
305#define QEDE_CSUM_ERROR BIT(0)
306#define QEDE_CSUM_UNNECESSARY BIT(1)
14db81de 307#define QEDE_TUNN_CSUM_UNNECESSARY BIT(2)
0d8e0aa0 308
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309#define QEDE_SP_RX_MODE 1
310#define QEDE_SP_VXLAN_PORT_CONFIG 2
9a109dd0 311#define QEDE_SP_GENEVE_PORT_CONFIG 3
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312
313union qede_reload_args {
314 u16 mtu;
315};
316
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317#ifdef CONFIG_DCB
318void qede_set_dcbnl_ops(struct net_device *ndev);
319#endif
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320void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level);
321void qede_set_ethtool_ops(struct net_device *netdev);
322void qede_reload(struct qede_dev *edev,
323 void (*func)(struct qede_dev *edev,
324 union qede_reload_args *args),
325 union qede_reload_args *args);
326int qede_change_mtu(struct net_device *dev, int new_mtu);
327void qede_fill_by_demand_stats(struct qede_dev *edev);
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328bool qede_has_rx_work(struct qede_rx_queue *rxq);
329int qede_txq_has_work(struct qede_tx_queue *txq);
330void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq, struct qede_dev *edev,
331 u8 count);
133fac0e 332
2950219d 333#define RX_RING_SIZE_POW 13
01ef7e05 334#define RX_RING_SIZE ((u16)BIT(RX_RING_SIZE_POW))
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335#define NUM_RX_BDS_MAX (RX_RING_SIZE - 1)
336#define NUM_RX_BDS_MIN 128
337#define NUM_RX_BDS_DEF NUM_RX_BDS_MAX
338
339#define TX_RING_SIZE_POW 13
01ef7e05 340#define TX_RING_SIZE ((u16)BIT(TX_RING_SIZE_POW))
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341#define NUM_TX_BDS_MAX (TX_RING_SIZE - 1)
342#define NUM_TX_BDS_MIN 128
343#define NUM_TX_BDS_DEF NUM_TX_BDS_MAX
344
3d789994 345#define QEDE_MIN_PKT_LEN 64
fc48b7a6 346#define QEDE_RX_HDR_SIZE 256
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347#define for_each_rss(i) for (i = 0; i < edev->num_rss; i++)
348
e712d52b 349#endif /* _QEDE_H_ */