summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/qlogic/qede/qede.h
blob: c79dc78746fcbf27e25530c4c94fe0e4f588eef8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
/* QLogic qede NIC Driver
* Copyright (c) 2015 QLogic Corporation
*
* This software is available under the terms of the GNU General Public License
* (GPL) Version 2, available from the file COPYING in the main directory of
* this source tree.
*/

#ifndef _QEDE_H_
#define _QEDE_H_
#include <linux/compiler.h>
#include <linux/version.h>
#include <linux/workqueue.h>
#include <linux/netdevice.h>
#include <linux/interrupt.h>
#include <linux/bitmap.h>
#include <linux/kernel.h>
#include <linux/mutex.h>
#include <linux/bpf.h>
#include <linux/io.h>
#include <linux/qed/common_hsi.h>
#include <linux/qed/eth_common.h>
#include <linux/qed/qed_if.h>
#include <linux/qed/qed_chain.h>
#include <linux/qed/qed_eth_if.h>

#define QEDE_MAJOR_VERSION		8
#define QEDE_MINOR_VERSION		10
#define QEDE_REVISION_VERSION		9
#define QEDE_ENGINEERING_VERSION	20
#define DRV_MODULE_VERSION __stringify(QEDE_MAJOR_VERSION) "."	\
		__stringify(QEDE_MINOR_VERSION) "."		\
		__stringify(QEDE_REVISION_VERSION) "."		\
		__stringify(QEDE_ENGINEERING_VERSION)

#define DRV_MODULE_SYM		qede

struct qede_stats {
	u64 no_buff_discards;
	u64 packet_too_big_discard;
	u64 ttl0_discard;
	u64 rx_ucast_bytes;
	u64 rx_mcast_bytes;
	u64 rx_bcast_bytes;
	u64 rx_ucast_pkts;
	u64 rx_mcast_pkts;
	u64 rx_bcast_pkts;
	u64 mftag_filter_discards;
	u64 mac_filter_discards;
	u64 tx_ucast_bytes;
	u64 tx_mcast_bytes;
	u64 tx_bcast_bytes;
	u64 tx_ucast_pkts;
	u64 tx_mcast_pkts;
	u64 tx_bcast_pkts;
	u64 tx_err_drop_pkts;
	u64 coalesced_pkts;
	u64 coalesced_events;
	u64 coalesced_aborts_num;
	u64 non_coalesced_pkts;
	u64 coalesced_bytes;

	/* port */
	u64 rx_64_byte_packets;
	u64 rx_65_to_127_byte_packets;
	u64 rx_128_to_255_byte_packets;
	u64 rx_256_to_511_byte_packets;
	u64 rx_512_to_1023_byte_packets;
	u64 rx_1024_to_1518_byte_packets;
	u64 rx_1519_to_1522_byte_packets;
	u64 rx_1519_to_2047_byte_packets;
	u64 rx_2048_to_4095_byte_packets;
	u64 rx_4096_to_9216_byte_packets;
	u64 rx_9217_to_16383_byte_packets;
	u64 rx_crc_errors;
	u64 rx_mac_crtl_frames;
	u64 rx_pause_frames;
	u64 rx_pfc_frames;
	u64 rx_align_errors;
	u64 rx_carrier_errors;
	u64 rx_oversize_packets;
	u64 rx_jabbers;
	u64 rx_undersize_packets;
	u64 rx_fragments;
	u64 tx_64_byte_packets;
	u64 tx_65_to_127_byte_packets;
	u64 tx_128_to_255_byte_packets;
	u64 tx_256_to_511_byte_packets;
	u64 tx_512_to_1023_byte_packets;
	u64 tx_1024_to_1518_byte_packets;
	u64 tx_1519_to_2047_byte_packets;
	u64 tx_2048_to_4095_byte_packets;
	u64 tx_4096_to_9216_byte_packets;
	u64 tx_9217_to_16383_byte_packets;
	u64 tx_pause_frames;
	u64 tx_pfc_frames;
	u64 tx_lpi_entry_count;
	u64 tx_total_collisions;
	u64 brb_truncates;
	u64 brb_discards;
	u64 tx_mac_ctrl_frames;
};

struct qede_vlan {
	struct list_head list;
	u16 vid;
	bool configured;
};

struct qede_rdma_dev {
	struct qedr_dev *qedr_dev;
	struct list_head entry;
	struct list_head roce_event_list;
	struct workqueue_struct *roce_wq;
};

struct qede_dev {
	struct qed_dev			*cdev;
	struct net_device		*ndev;
	struct pci_dev			*pdev;

	u32				dp_module;
	u8				dp_level;

	u32 flags;
#define QEDE_FLAG_IS_VF	BIT(0)
#define IS_VF(edev)	(!!((edev)->flags & QEDE_FLAG_IS_VF))

	const struct qed_eth_ops	*ops;

	struct qed_dev_eth_info dev_info;
#define QEDE_MAX_RSS_CNT(edev)	((edev)->dev_info.num_queues)
#define QEDE_MAX_TSS_CNT(edev)	((edev)->dev_info.num_queues)

	struct qede_fastpath		*fp_array;
	u8				req_num_tx;
	u8				fp_num_tx;
	u8				req_num_rx;
	u8				fp_num_rx;
	u16				req_queues;
	u16				num_queues;
#define QEDE_QUEUE_CNT(edev)	((edev)->num_queues)
#define QEDE_RSS_COUNT(edev)	((edev)->num_queues - (edev)->fp_num_tx)
#define QEDE_TSS_COUNT(edev)	((edev)->num_queues - (edev)->fp_num_rx)

	struct qed_int_info		int_info;
	unsigned char			primary_mac[ETH_ALEN];

	/* Smaller private varaiant of the RTNL lock */
	struct mutex			qede_lock;
	u32				state; /* Protected by qede_lock */
	u16				rx_buf_size;
	u32				rx_copybreak;

	/* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */
#define ETH_OVERHEAD			(ETH_HLEN + 8 + 8)
	/* Max supported alignment is 256 (8 shift)
	 * minimal alignment shift 6 is optimal for 57xxx HW performance
	 */
#define QEDE_RX_ALIGN_SHIFT		max(6, min(8, L1_CACHE_SHIFT))
	/* We assume skb_build() uses sizeof(struct skb_shared_info) bytes
	 * at the end of skb->data, to avoid wasting a full cache line.
	 * This reduces memory use (skb->truesize).
	 */
#define QEDE_FW_RX_ALIGN_END					\
	max_t(u64, 1UL << QEDE_RX_ALIGN_SHIFT,			\
	      SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))

	struct qede_stats		stats;
#define QEDE_RSS_INDIR_INITED	BIT(0)
#define QEDE_RSS_KEY_INITED	BIT(1)
#define QEDE_RSS_CAPS_INITED	BIT(2)
	u32 rss_params_inited; /* bit-field to track initialized rss params */
	struct qed_update_vport_rss_params	rss_params;
	u16			q_num_rx_buffers; /* Must be a power of two */
	u16			q_num_tx_buffers; /* Must be a power of two */

	bool gro_disable;
	struct list_head vlan_list;
	u16 configured_vlans;
	u16 non_configured_vlans;
	bool accept_any_vlan;
	struct delayed_work		sp_task;
	unsigned long			sp_flags;
	u16				vxlan_dst_port;
	u16				geneve_dst_port;

	bool wol_enabled;

	struct qede_rdma_dev		rdma_info;

	struct bpf_prog *xdp_prog;
};

enum QEDE_STATE {
	QEDE_STATE_CLOSED,
	QEDE_STATE_OPEN,
};

#define HILO_U64(hi, lo)		((((u64)(hi)) << 32) + (lo))

#define	MAX_NUM_TC	8
#define	MAX_NUM_PRI	8

/* The driver supports the new build_skb() API:
 * RX ring buffer contains pointer to kmalloc() data only,
 * skb are built only after the frame was DMA-ed.
 */
struct sw_rx_data {
	struct page *data;
	dma_addr_t mapping;
	unsigned int page_offset;
};

enum qede_agg_state {
	QEDE_AGG_STATE_NONE  = 0,
	QEDE_AGG_STATE_START = 1,
	QEDE_AGG_STATE_ERROR = 2
};

struct qede_agg_info {
	/* rx_buf is a data buffer that can be placed / consumed from rx bd
	 * chain. It has two purposes: We will preallocate the data buffer
	 * for each aggregation when we open the interface and will place this
	 * buffer on the rx-bd-ring when we receive TPA_START. We don't want
	 * to be in a state where allocation fails, as we can't reuse the
	 * consumer buffer in the rx-chain since FW may still be writing to it
	 * (since header needs to be modified for TPA).
	 * The second purpose is to keep a pointer to the bd buffer during
	 * aggregation.
	 */
	struct sw_rx_data buffer;
	dma_addr_t buffer_mapping;

	struct sk_buff *skb;

	/* We need some structs from the start cookie until termination */
	u16 vlan_tag;
	u16 start_cqe_bd_len;
	u8 start_cqe_placement_offset;

	u8 state;
	u8 frag_id;

	u8 tunnel_type;
};

struct qede_rx_queue {
	__le16 *hw_cons_ptr;
	void __iomem *hw_rxq_prod_addr;

	/* Required for the allocation of replacement buffers */
	struct device *dev;

	struct bpf_prog *xdp_prog;

	u16 sw_rx_cons;
	u16 sw_rx_prod;

	u16 num_rx_buffers; /* Slowpath */
	u8 data_direction;
	u8 rxq_id;

	u32 rx_buf_size;
	u32 rx_buf_seg_size;

	u64 rcv_pkts;

	struct sw_rx_data *sw_rx_ring;
	struct qed_chain rx_bd_ring;
	struct qed_chain rx_comp_ring ____cacheline_aligned;

	/* GRO */
	struct qede_agg_info tpa_info[ETH_TPA_MAX_AGGS_NUM];

	u64 rx_hw_errors;
	u64 rx_alloc_errors;
	u64 rx_ip_frags;

	u64 xdp_no_pass;

	void *handle;
};

union db_prod {
	struct eth_db_data data;
	u32		raw;
};

struct sw_tx_bd {
	struct sk_buff *skb;
	u8 flags;
/* Set on the first BD descriptor when there is a split BD */
#define QEDE_TSO_SPLIT_BD		BIT(0)
};

struct qede_tx_queue {
	u8 is_xdp;
	bool is_legacy;
	u16 sw_tx_cons;
	u16 sw_tx_prod;
	u16 num_tx_buffers; /* Slowpath only */

	u64 xmit_pkts;
	u64 stopped_cnt;

	__le16 *hw_cons_ptr;

	/* Needed for the mapping of packets */
	struct device *dev;

	void __iomem *doorbell_addr;
	union db_prod tx_db;
	int index; /* Slowpath only */
#define QEDE_TXQ_XDP_TO_IDX(edev, txq)	((txq)->index - \
					 QEDE_MAX_TSS_CNT(edev))
#define QEDE_TXQ_IDX_TO_XDP(edev, idx)	((idx) + QEDE_MAX_TSS_CNT(edev))

	/* Regular Tx requires skb + metadata for release purpose,
	 * while XDP requires only the pages themselves.
	 */
	union {
		struct sw_tx_bd *skbs;
		struct page **pages;
	} sw_tx_ring;

	struct qed_chain tx_pbl;

	/* Slowpath; Should be kept in end [unless missing padding] */
	void *handle;
};

#define BD_UNMAP_ADDR(bd)		HILO_U64(le32_to_cpu((bd)->addr.hi), \
						 le32_to_cpu((bd)->addr.lo))
#define BD_SET_UNMAP_ADDR_LEN(bd, maddr, len)				\
	do {								\
		(bd)->addr.hi = cpu_to_le32(upper_32_bits(maddr));	\
		(bd)->addr.lo = cpu_to_le32(lower_32_bits(maddr));	\
		(bd)->nbytes = cpu_to_le16(len);			\
	} while (0)
#define BD_UNMAP_LEN(bd)		(le16_to_cpu((bd)->nbytes))

struct qede_fastpath {
	struct qede_dev	*edev;
#define QEDE_FASTPATH_TX	BIT(0)
#define QEDE_FASTPATH_RX	BIT(1)
#define QEDE_FASTPATH_XDP	BIT(2)
#define QEDE_FASTPATH_COMBINED	(QEDE_FASTPATH_TX | QEDE_FASTPATH_RX)
	u8			type;
	u8			id;
	u8			xdp_xmit;
	struct napi_struct	napi;
	struct qed_sb_info	*sb_info;
	struct qede_rx_queue	*rxq;
	struct qede_tx_queue	*txq;
	struct qede_tx_queue	*xdp_tx;

#define VEC_NAME_SIZE	(sizeof(((struct net_device *)0)->name) + 8)
	char	name[VEC_NAME_SIZE];
};

/* Debug print definitions */
#define DP_NAME(edev) ((edev)->ndev->name)

#define XMIT_PLAIN		0
#define XMIT_L4_CSUM		BIT(0)
#define XMIT_LSO		BIT(1)
#define XMIT_ENC		BIT(2)
#define XMIT_ENC_GSO_L4_CSUM	BIT(3)

#define QEDE_CSUM_ERROR			BIT(0)
#define QEDE_CSUM_UNNECESSARY		BIT(1)
#define QEDE_TUNN_CSUM_UNNECESSARY	BIT(2)

#define QEDE_SP_RX_MODE			1
#define QEDE_SP_VXLAN_PORT_CONFIG	2
#define QEDE_SP_GENEVE_PORT_CONFIG	3

struct qede_reload_args {
	void (*func)(struct qede_dev *edev, struct qede_reload_args *args);
	union {
		netdev_features_t features;
		struct bpf_prog *new_prog;
		u16 mtu;
	} u;
};

#ifdef CONFIG_DCB
void qede_set_dcbnl_ops(struct net_device *ndev);
#endif
void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level);
void qede_set_ethtool_ops(struct net_device *netdev);
void qede_reload(struct qede_dev *edev,
		 struct qede_reload_args *args, bool is_locked);
int qede_change_mtu(struct net_device *dev, int new_mtu);
void qede_fill_by_demand_stats(struct qede_dev *edev);
void __qede_lock(struct qede_dev *edev);
void __qede_unlock(struct qede_dev *edev);
bool qede_has_rx_work(struct qede_rx_queue *rxq);
int qede_txq_has_work(struct qede_tx_queue *txq);
void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq, u8 count);
void qede_update_rx_prod(struct qede_dev *edev, struct qede_rx_queue *rxq);

#define RX_RING_SIZE_POW	13
#define RX_RING_SIZE		((u16)BIT(RX_RING_SIZE_POW))
#define NUM_RX_BDS_MAX		(RX_RING_SIZE - 1)
#define NUM_RX_BDS_MIN		128
#define NUM_RX_BDS_DEF		((u16)BIT(10) - 1)

#define TX_RING_SIZE_POW	13
#define TX_RING_SIZE		((u16)BIT(TX_RING_SIZE_POW))
#define NUM_TX_BDS_MAX		(TX_RING_SIZE - 1)
#define NUM_TX_BDS_MIN		128
#define NUM_TX_BDS_DEF		NUM_TX_BDS_MAX

#define QEDE_MIN_PKT_LEN		64
#define QEDE_RX_HDR_SIZE		256
#define QEDE_MAX_JUMBO_PACKET_SIZE	9600
#define	for_each_queue(i) for (i = 0; i < edev->num_queues; i++)

#endif /* _QEDE_H_ */
OpenPOWER on IntegriCloud