summaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/qlogic/qed/qed_sp.h
blob: b2c08e4d2a9b9de9c2042bc2afa22c6bd51c3618 (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
422
423
424
425
426
427
428
429
/* QLogic qed 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 _QED_SP_H
#define _QED_SP_H

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/qed/qed_chain.h>
#include "qed.h"
#include "qed_hsi.h"

enum spq_mode {
	QED_SPQ_MODE_BLOCK,     /* Client will poll a designated mem. address */
	QED_SPQ_MODE_CB,        /* Client supplies a callback */
	QED_SPQ_MODE_EBLOCK,    /* QED should block until completion */
};

struct qed_spq_comp_cb {
	void	(*function)(struct qed_hwfn *,
			    void *,
			    union event_ring_data *,
			    u8 fw_return_code);
	void	*cookie;
};

/**
 * @brief qed_eth_cqe_completion - handles the completion of a
 *        ramrod on the cqe ring
 *
 * @param p_hwfn
 * @param cqe
 *
 * @return int
 */
int qed_eth_cqe_completion(struct qed_hwfn *p_hwfn,
			   struct eth_slow_path_rx_cqe *cqe);

/**
 *  @file
 *
 *  QED Slow-hwfn queue interface
 */

union ramrod_data {
	struct pf_start_ramrod_data pf_start;
	struct pf_update_ramrod_data pf_update;
	struct rx_queue_start_ramrod_data rx_queue_start;
	struct rx_queue_update_ramrod_data rx_queue_update;
	struct rx_queue_stop_ramrod_data rx_queue_stop;
	struct tx_queue_start_ramrod_data tx_queue_start;
	struct tx_queue_stop_ramrod_data tx_queue_stop;
	struct vport_start_ramrod_data vport_start;
	struct vport_stop_ramrod_data vport_stop;
	struct vport_update_ramrod_data vport_update;
	struct core_rx_start_ramrod_data core_rx_queue_start;
	struct core_rx_stop_ramrod_data core_rx_queue_stop;
	struct core_tx_start_ramrod_data core_tx_queue_start;
	struct core_tx_stop_ramrod_data core_tx_queue_stop;
	struct vport_filter_update_ramrod_data vport_filter_update;

	struct rdma_init_func_ramrod_data rdma_init_func;
	struct rdma_close_func_ramrod_data rdma_close_func;
	struct rdma_register_tid_ramrod_data rdma_register_tid;
	struct rdma_deregister_tid_ramrod_data rdma_deregister_tid;
	struct roce_create_qp_resp_ramrod_data roce_create_qp_resp;
	struct roce_create_qp_req_ramrod_data roce_create_qp_req;
	struct roce_modify_qp_resp_ramrod_data roce_modify_qp_resp;
	struct roce_modify_qp_req_ramrod_data roce_modify_qp_req;
	struct roce_query_qp_resp_ramrod_data roce_query_qp_resp;
	struct roce_query_qp_req_ramrod_data roce_query_qp_req;
	struct roce_destroy_qp_resp_ramrod_data roce_destroy_qp_resp;
	struct roce_destroy_qp_req_ramrod_data roce_destroy_qp_req;
	struct rdma_create_cq_ramrod_data rdma_create_cq;
	struct rdma_destroy_cq_ramrod_data rdma_destroy_cq;
	struct rdma_srq_create_ramrod_data rdma_create_srq;
	struct rdma_srq_destroy_ramrod_data rdma_destroy_srq;
	struct rdma_srq_modify_ramrod_data rdma_modify_srq;
	struct roce_init_func_ramrod_data roce_init_func;

	struct iscsi_slow_path_hdr iscsi_empty;
	struct iscsi_init_ramrod_params iscsi_init;
	struct iscsi_spe_func_dstry iscsi_destroy;
	struct iscsi_spe_conn_offload iscsi_conn_offload;
	struct iscsi_conn_update_ramrod_params iscsi_conn_update;
	struct iscsi_spe_conn_termination iscsi_conn_terminate;

	struct vf_start_ramrod_data vf_start;
	struct vf_stop_ramrod_data vf_stop;
};

#define EQ_MAX_CREDIT   0xffffffff

enum spq_priority {
	QED_SPQ_PRIORITY_NORMAL,
	QED_SPQ_PRIORITY_HIGH,
};

union qed_spq_req_comp {
	struct qed_spq_comp_cb	cb;
	u64			*done_addr;
};

struct qed_spq_comp_done {
	u64	done;
	u8	fw_return_code;
};

struct qed_spq_entry {
	struct list_head		list;

	u8				flags;

	/* HSI slow path element */
	struct slow_path_element	elem;

	union ramrod_data		ramrod;

	enum spq_priority		priority;

	/* pending queue for this entry */
	struct list_head		*queue;

	enum spq_mode			comp_mode;
	struct qed_spq_comp_cb		comp_cb;
	struct qed_spq_comp_done	comp_done; /* SPQ_MODE_EBLOCK */
};

struct qed_eq {
	struct qed_chain	chain;
	u8			eq_sb_index;    /* index within the SB */
	__le16			*p_fw_cons;     /* ptr to index value */
};

struct qed_consq {
	struct qed_chain chain;
};

struct qed_spq {
	spinlock_t		lock; /* SPQ lock */

	struct list_head	unlimited_pending;
	struct list_head	pending;
	struct list_head	completion_pending;
	struct list_head	free_pool;

	struct qed_chain	chain;

	/* allocated dma-able memory for spq entries (+ramrod data) */
	dma_addr_t		p_phys;
	struct qed_spq_entry	*p_virt;

#define SPQ_RING_SIZE \
	(CORE_SPQE_PAGE_SIZE_BYTES / sizeof(struct slow_path_element))

	/* Bitmap for handling out-of-order completions */
	DECLARE_BITMAP(p_comp_bitmap, SPQ_RING_SIZE);
	u8			comp_bitmap_idx;

	/* Statistics */
	u32			unlimited_pending_count;
	u32			normal_count;
	u32			high_count;
	u32			comp_sent_count;
	u32			comp_count;

	u32			cid;
};

/**
 * @brief qed_spq_post - Posts a Slow hwfn request to FW, or lacking that
 *        Pends it to the future list.
 *
 * @param p_hwfn
 * @param p_req
 *
 * @return int
 */
int qed_spq_post(struct qed_hwfn *p_hwfn,
		 struct qed_spq_entry *p_ent,
		 u8 *fw_return_code);

/**
 * @brief qed_spq_allocate - Alloocates & initializes the SPQ and EQ.
 *
 * @param p_hwfn
 *
 * @return int
 */
int qed_spq_alloc(struct qed_hwfn *p_hwfn);

/**
 * @brief qed_spq_setup - Reset the SPQ to its start state.
 *
 * @param p_hwfn
 */
void qed_spq_setup(struct qed_hwfn *p_hwfn);

/**
 * @brief qed_spq_deallocate - Deallocates the given SPQ struct.
 *
 * @param p_hwfn
 */
void qed_spq_free(struct qed_hwfn *p_hwfn);

/**
 * @brief qed_spq_get_entry - Obtain an entrry from the spq
 *        free pool list.
 *
 *
 *
 * @param p_hwfn
 * @param pp_ent
 *
 * @return int
 */
int
qed_spq_get_entry(struct qed_hwfn *p_hwfn,
		  struct qed_spq_entry **pp_ent);

/**
 * @brief qed_spq_return_entry - Return an entry to spq free
 *                                 pool list
 *
 * @param p_hwfn
 * @param p_ent
 */
void qed_spq_return_entry(struct qed_hwfn *p_hwfn,
			  struct qed_spq_entry *p_ent);
/**
 * @brief qed_eq_allocate - Allocates & initializes an EQ struct
 *
 * @param p_hwfn
 * @param num_elem number of elements in the eq
 *
 * @return struct qed_eq* - a newly allocated structure; NULL upon error.
 */
struct qed_eq *qed_eq_alloc(struct qed_hwfn *p_hwfn,
			    u16 num_elem);

/**
 * @brief qed_eq_setup - Reset the SPQ to its start state.
 *
 * @param p_hwfn
 * @param p_eq
 */
void qed_eq_setup(struct qed_hwfn *p_hwfn,
		  struct qed_eq *p_eq);

/**
 * @brief qed_eq_deallocate - deallocates the given EQ struct.
 *
 * @param p_hwfn
 * @param p_eq
 */
void qed_eq_free(struct qed_hwfn *p_hwfn,
		 struct qed_eq *p_eq);

/**
 * @brief qed_eq_prod_update - update the FW with default EQ producer
 *
 * @param p_hwfn
 * @param prod
 */
void qed_eq_prod_update(struct qed_hwfn *p_hwfn,
			u16 prod);

/**
 * @brief qed_eq_completion - Completes currently pending EQ elements
 *
 * @param p_hwfn
 * @param cookie
 *
 * @return int
 */
int qed_eq_completion(struct qed_hwfn *p_hwfn,
		      void *cookie);

/**
 * @brief qed_spq_completion - Completes a single event
 *
 * @param p_hwfn
 * @param echo - echo value from cookie (used for determining completion)
 * @param p_data - data from cookie (used in callback function if applicable)
 *
 * @return int
 */
int qed_spq_completion(struct qed_hwfn *p_hwfn,
		       __le16 echo,
		       u8 fw_return_code,
		       union event_ring_data *p_data);

/**
 * @brief qed_spq_get_cid - Given p_hwfn, return cid for the hwfn's SPQ
 *
 * @param p_hwfn
 *
 * @return u32 - SPQ CID
 */
u32 qed_spq_get_cid(struct qed_hwfn *p_hwfn);

/**
 * @brief qed_consq_alloc - Allocates & initializes an ConsQ
 *        struct
 *
 * @param p_hwfn
 *
 * @return struct qed_eq* - a newly allocated structure; NULL upon error.
 */
struct qed_consq *qed_consq_alloc(struct qed_hwfn *p_hwfn);

/**
 * @brief qed_consq_setup - Reset the ConsQ to its start
 *        state.
 *
 * @param p_hwfn
 * @param p_eq
 */
void qed_consq_setup(struct qed_hwfn *p_hwfn,
		     struct qed_consq *p_consq);

/**
 * @brief qed_consq_free - deallocates the given ConsQ struct.
 *
 * @param p_hwfn
 * @param p_eq
 */
void qed_consq_free(struct qed_hwfn *p_hwfn,
		    struct qed_consq *p_consq);

/**
 * @file
 *
 * @brief Slow-hwfn low-level commands (Ramrods) function definitions.
 */

#define QED_SP_EQ_COMPLETION  0x01
#define QED_SP_CQE_COMPLETION 0x02

struct qed_sp_init_data {
	u32			cid;
	u16			opaque_fid;

	/* Information regarding operation upon sending & completion */
	enum spq_mode		comp_mode;
	struct qed_spq_comp_cb *p_comp_data;
};

int qed_sp_init_request(struct qed_hwfn *p_hwfn,
			struct qed_spq_entry **pp_ent,
			u8 cmd,
			u8 protocol,
			struct qed_sp_init_data *p_data);

/**
 * @brief qed_sp_pf_start - PF Function Start Ramrod
 *
 * This ramrod is sent to initialize a physical function (PF). It will
 * configure the function related parameters and write its completion to the
 * event ring specified in the parameters.
 *
 * Ramrods complete on the common event ring for the PF. This ring is
 * allocated by the driver on host memory and its parameters are written
 * to the internal RAM of the UStorm by the Function Start Ramrod.
 *
 * @param p_hwfn
 * @param p_tunn
 * @param mode
 * @param allow_npar_tx_switch
 *
 * @return int
 */

int qed_sp_pf_start(struct qed_hwfn *p_hwfn,
		    struct qed_tunn_start_params *p_tunn,
		    enum qed_mf_mode mode, bool allow_npar_tx_switch);

/**
 * @brief qed_sp_pf_update - PF Function Update Ramrod
 *
 * This ramrod updates function-related parameters. Every parameter can be
 * updated independently, according to configuration flags.
 *
 * @param p_hwfn
 *
 * @return int
 */

int qed_sp_pf_update(struct qed_hwfn *p_hwfn);

/**
 * @brief qed_sp_pf_stop - PF Function Stop Ramrod
 *
 * This ramrod is sent to close a Physical Function (PF). It is the last ramrod
 * sent and the last completion written to the PFs Event Ring. This ramrod also
 * deletes the context for the Slowhwfn connection on this PF.
 *
 * @note Not required for first packet.
 *
 * @param p_hwfn
 *
 * @return int
 */

int qed_sp_pf_stop(struct qed_hwfn *p_hwfn);

int qed_sp_pf_update_tunn_cfg(struct qed_hwfn *p_hwfn,
			      struct qed_tunn_update_params *p_tunn,
			      enum spq_mode comp_mode,
			      struct qed_spq_comp_cb *p_comp_data);
/**
 * @brief qed_sp_heartbeat_ramrod - Send empty Ramrod
 *
 * @param p_hwfn
 *
 * @return int
 */

int qed_sp_heartbeat_ramrod(struct qed_hwfn *p_hwfn);

#endif