xref: /linux/drivers/net/ethernet/broadcom/cnic.h (revision 9410645520e9b820069761f3450ef6661418e279)
1 /* cnic.h: QLogic CNIC core network driver.
2  *
3  * Copyright (c) 2006-2014 Broadcom Corporation
4  * Copyright (c) 2014 QLogic Corporation
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation.
9  *
10  */
11 
12 
13 #ifndef CNIC_H
14 #define CNIC_H
15 
16 #define HC_INDEX_ISCSI_EQ_CONS			6
17 
18 #define HC_INDEX_FCOE_EQ_CONS			3
19 
20 #define HC_SP_INDEX_ETH_ISCSI_CQ_CONS		5
21 #define HC_SP_INDEX_ETH_ISCSI_RX_CQ_CONS	1
22 
23 #define KWQ_PAGE_CNT	4
24 #define KCQ_PAGE_CNT	16
25 
26 #define KWQ_CID 		24
27 #define KCQ_CID 		25
28 
29 /*
30  *	krnlq_context definition
31  */
32 #define L5_KRNLQ_FLAGS	0x00000000
33 #define L5_KRNLQ_SIZE	0x00000000
34 #define L5_KRNLQ_TYPE	0x00000000
35 #define KRNLQ_FLAGS_PG_SZ					(0xf<<0)
36 #define KRNLQ_FLAGS_PG_SZ_256					(0<<0)
37 #define KRNLQ_FLAGS_PG_SZ_512					(1<<0)
38 #define KRNLQ_FLAGS_PG_SZ_1K					(2<<0)
39 #define KRNLQ_FLAGS_PG_SZ_2K					(3<<0)
40 #define KRNLQ_FLAGS_PG_SZ_4K					(4<<0)
41 #define KRNLQ_FLAGS_PG_SZ_8K					(5<<0)
42 #define KRNLQ_FLAGS_PG_SZ_16K					(6<<0)
43 #define KRNLQ_FLAGS_PG_SZ_32K					(7<<0)
44 #define KRNLQ_FLAGS_PG_SZ_64K					(8<<0)
45 #define KRNLQ_FLAGS_PG_SZ_128K					(9<<0)
46 #define KRNLQ_FLAGS_PG_SZ_256K					(10<<0)
47 #define KRNLQ_FLAGS_PG_SZ_512K					(11<<0)
48 #define KRNLQ_FLAGS_PG_SZ_1M					(12<<0)
49 #define KRNLQ_FLAGS_PG_SZ_2M					(13<<0)
50 #define KRNLQ_FLAGS_QE_SELF_SEQ					(1<<15)
51 #define KRNLQ_SIZE_TYPE_SIZE	((((0x28 + 0x1f) & ~0x1f) / 0x20) << 16)
52 #define KRNLQ_TYPE_TYPE						(0xf<<28)
53 #define KRNLQ_TYPE_TYPE_EMPTY					(0<<28)
54 #define KRNLQ_TYPE_TYPE_KRNLQ					(6<<28)
55 
56 #define L5_KRNLQ_HOST_QIDX		0x00000004
57 #define L5_KRNLQ_HOST_FW_QIDX		0x00000008
58 #define L5_KRNLQ_NX_QE_SELF_SEQ 	0x0000000c
59 #define L5_KRNLQ_QE_SELF_SEQ_MAX	0x0000000c
60 #define L5_KRNLQ_NX_QE_HADDR_HI 	0x00000010
61 #define L5_KRNLQ_NX_QE_HADDR_LO 	0x00000014
62 #define L5_KRNLQ_PGTBL_PGIDX		0x00000018
63 #define L5_KRNLQ_NX_PG_QIDX 		0x00000018
64 #define L5_KRNLQ_PGTBL_NPAGES		0x0000001c
65 #define L5_KRNLQ_QIDX_INCR		0x0000001c
66 #define L5_KRNLQ_PGTBL_HADDR_HI 	0x00000020
67 #define L5_KRNLQ_PGTBL_HADDR_LO 	0x00000024
68 
69 #define BNX2_PG_CTX_MAP			0x1a0034
70 #define BNX2_ISCSI_CTX_MAP		0x1a0074
71 
72 #define MAX_COMPLETED_KCQE	64
73 
74 #define MAX_CNIC_L5_CONTEXT	256
75 
76 #define MAX_CM_SK_TBL_SZ	MAX_CNIC_L5_CONTEXT
77 
78 #define MAX_ISCSI_TBL_SZ	256
79 
80 #define CNIC_LOCAL_PORT_MIN	60000
81 #define CNIC_LOCAL_PORT_MAX	61024
82 #define CNIC_LOCAL_PORT_RANGE	(CNIC_LOCAL_PORT_MAX - CNIC_LOCAL_PORT_MIN)
83 
84 #define KWQE_CNT (BNX2_PAGE_SIZE / sizeof(struct kwqe))
85 #define KCQE_CNT (BNX2_PAGE_SIZE / sizeof(struct kcqe))
86 #define MAX_KWQE_CNT (KWQE_CNT - 1)
87 #define MAX_KCQE_CNT (KCQE_CNT - 1)
88 
89 #define MAX_KWQ_IDX	((KWQ_PAGE_CNT * KWQE_CNT) - 1)
90 #define MAX_KCQ_IDX	((KCQ_PAGE_CNT * KCQE_CNT) - 1)
91 
92 #define KWQ_PG(x) (((x) & ~MAX_KWQE_CNT) >> (BNX2_PAGE_BITS - 5))
93 #define KWQ_IDX(x) ((x) & MAX_KWQE_CNT)
94 
95 #define KCQ_PG(x) (((x) & ~MAX_KCQE_CNT) >> (BNX2_PAGE_BITS - 5))
96 #define KCQ_IDX(x) ((x) & MAX_KCQE_CNT)
97 
98 #define BNX2X_NEXT_KCQE(x) (((x) & (MAX_KCQE_CNT - 1)) ==		\
99 		(MAX_KCQE_CNT - 1)) ?					\
100 		(x) + 2 : (x) + 1
101 
102 #define BNX2X_KWQ_DATA_PG(cp, x) ((x) / (cp)->kwq_16_data_pp)
103 #define BNX2X_KWQ_DATA_IDX(cp, x) ((x) % (cp)->kwq_16_data_pp)
104 #define BNX2X_KWQ_DATA(cp, x)						\
105 	&(cp)->kwq_16_data[BNX2X_KWQ_DATA_PG(cp, x)][BNX2X_KWQ_DATA_IDX(cp, x)]
106 
107 #define DEF_IPID_START		0x8000
108 
109 #define DEF_KA_TIMEOUT		10000
110 #define DEF_KA_INTERVAL		300000
111 #define DEF_KA_MAX_PROBE_COUNT	3
112 #define DEF_TOS			0
113 #define DEF_TTL			0xfe
114 #define DEF_SND_SEQ_SCALE	0
115 #define DEF_RCV_BUF		0xffff
116 #define DEF_SND_BUF		0xffff
117 #define DEF_SEED		0
118 #define DEF_MAX_RT_TIME		500
119 #define DEF_MAX_DA_COUNT	2
120 #define DEF_SWS_TIMER		1000
121 #define DEF_MAX_CWND		0xffff
122 
123 struct cnic_ctx {
124 	u32		cid;
125 	void		*ctx;
126 	dma_addr_t	mapping;
127 };
128 
129 #define BNX2_MAX_CID		0x2000
130 
131 struct cnic_dma {
132 	int		num_pages;
133 	void		**pg_arr;
134 	dma_addr_t	*pg_map_arr;
135 	int		pgtbl_size;
136 	u32		*pgtbl;
137 	dma_addr_t	pgtbl_map;
138 };
139 
140 struct cnic_id_tbl {
141 	spinlock_t	lock;
142 	u32		start;
143 	u32		max;
144 	u32		next;
145 	unsigned long	*table;
146 };
147 
148 #define CNIC_KWQ16_DATA_SIZE	128
149 
150 struct kwqe_16_data {
151 	u8	data[CNIC_KWQ16_DATA_SIZE];
152 };
153 
154 struct cnic_iscsi {
155 	struct cnic_dma		task_array_info;
156 	struct cnic_dma		r2tq_info;
157 	struct cnic_dma		hq_info;
158 };
159 
160 struct cnic_context {
161 	u32			cid;
162 	struct kwqe_16_data	*kwqe_data;
163 	dma_addr_t		kwqe_data_mapping;
164 	wait_queue_head_t	waitq;
165 	int			wait_cond;
166 	unsigned long		timestamp;
167 	unsigned long		ctx_flags;
168 #define	CTX_FL_OFFLD_START	0
169 #define	CTX_FL_DELETE_WAIT	1
170 #define	CTX_FL_CID_ERROR	2
171 	u8			ulp_proto_id;
172 	union {
173 		struct cnic_iscsi	*iscsi;
174 	} proto;
175 };
176 
177 struct kcq_info {
178 	struct cnic_dma	dma;
179 	struct kcqe	**kcq;
180 
181 	u16		*hw_prod_idx_ptr;
182 	u16		sw_prod_idx;
183 	u16		*status_idx_ptr;
184 	u32		io_addr;
185 
186 	u16		(*next_idx)(u16);
187 	u16		(*hw_idx)(u16);
188 };
189 
190 #define UIO_USE_TX_DOORBELL 0x017855DB
191 
192 struct cnic_uio_dev {
193 	struct uio_info		cnic_uinfo;
194 	u32			uio_dev;
195 
196 	int			l2_ring_size;
197 	void			*l2_ring;
198 	dma_addr_t		l2_ring_map;
199 
200 	int			l2_buf_size;
201 	void			*l2_buf;
202 	dma_addr_t		l2_buf_map;
203 
204 	struct cnic_dev		*dev;
205 	struct pci_dev		*pdev;
206 	struct list_head	list;
207 };
208 
209 struct cnic_local {
210 
211 	spinlock_t cnic_ulp_lock;
212 	void *ulp_handle[MAX_CNIC_ULP_TYPE];
213 	unsigned long ulp_flags[MAX_CNIC_ULP_TYPE];
214 #define ULP_F_INIT	0
215 #define ULP_F_START	1
216 #define ULP_F_CALL_PENDING	2
217 	struct cnic_ulp_ops __rcu *ulp_ops[MAX_CNIC_ULP_TYPE];
218 
219 	unsigned long cnic_local_flags;
220 #define	CNIC_LCL_FL_KWQ_INIT		0x0
221 #define	CNIC_LCL_FL_L2_WAIT		0x1
222 #define	CNIC_LCL_FL_RINGS_INITED	0x2
223 #define	CNIC_LCL_FL_STOP_ISCSI		0x4
224 
225 	struct cnic_dev *dev;
226 
227 	struct cnic_eth_dev *ethdev;
228 
229 	struct cnic_uio_dev *udev;
230 
231 	int		l2_rx_ring_size;
232 	int		l2_single_buf_size;
233 
234 	u16		*rx_cons_ptr;
235 	u16		*tx_cons_ptr;
236 	u16		rx_cons;
237 	u16		tx_cons;
238 
239 	struct cnic_dma		kwq_info;
240 	struct kwqe		**kwq;
241 
242 	struct cnic_dma		kwq_16_data_info;
243 
244 	u16		max_kwq_idx;
245 
246 	u16		kwq_prod_idx;
247 	u32		kwq_io_addr;
248 
249 	u16		*kwq_con_idx_ptr;
250 	u16		kwq_con_idx;
251 
252 	struct kcq_info	kcq1;
253 	struct kcq_info	kcq2;
254 
255 	union {
256 		void				*gen;
257 		struct status_block_msix	*bnx2;
258 		struct host_hc_status_block_e1x	*bnx2x_e1x;
259 		/* index values - which counter to update */
260 		#define SM_RX_ID		0
261 		#define SM_TX_ID		1
262 	} status_blk;
263 	dma_addr_t status_blk_map;
264 
265 	struct host_sp_status_block	*bnx2x_def_status_blk;
266 
267 	u32				status_blk_num;
268 	u32				bnx2x_igu_sb_id;
269 	u32				int_num;
270 	u32				last_status_idx;
271 	struct work_struct		cnic_irq_bh_work;
272 
273 	struct kcqe		*completed_kcq[MAX_COMPLETED_KCQE];
274 
275 	struct cnic_sock	*csk_tbl;
276 	struct cnic_id_tbl	csk_port_tbl;
277 
278 	struct cnic_dma		gbl_buf_info;
279 
280 	struct cnic_iscsi	*iscsi_tbl;
281 	struct cnic_context	*ctx_tbl;
282 	struct cnic_id_tbl	cid_tbl;
283 	atomic_t		iscsi_conn;
284 	u32			iscsi_start_cid;
285 
286 	u32			fcoe_init_cid;
287 	u32			fcoe_start_cid;
288 	struct cnic_id_tbl	fcoe_cid_tbl;
289 
290 	u32			max_cid_space;
291 
292 	/* per connection parameters */
293 	int			num_iscsi_tasks;
294 	int			num_ccells;
295 	int			task_array_size;
296 	int			r2tq_size;
297 	int			hq_size;
298 	int			num_cqs;
299 
300 	struct delayed_work	delete_task;
301 
302 	struct cnic_ctx		*ctx_arr;
303 	int			ctx_blks;
304 	int			ctx_blk_size;
305 	unsigned long		ctx_align;
306 	int			cids_per_blk;
307 
308 	u32			chip_id;
309 	int			func;
310 
311 	u32			shmem_base;
312 
313 	struct cnic_ops		*cnic_ops;
314 	int			(*start_hw)(struct cnic_dev *);
315 	void			(*stop_hw)(struct cnic_dev *);
316 	void			(*setup_pgtbl)(struct cnic_dev *,
317 					       struct cnic_dma *);
318 	int			(*alloc_resc)(struct cnic_dev *);
319 	void			(*free_resc)(struct cnic_dev *);
320 	int			(*start_cm)(struct cnic_dev *);
321 	void			(*stop_cm)(struct cnic_dev *);
322 	void			(*enable_int)(struct cnic_dev *);
323 	void			(*disable_int_sync)(struct cnic_dev *);
324 	void			(*ack_int)(struct cnic_dev *);
325 	void			(*arm_int)(struct cnic_dev *, u32 index);
326 	void			(*close_conn)(struct cnic_sock *, u32 opcode);
327 };
328 
329 struct bnx2x_bd_chain_next {
330 	u32	addr_lo;
331 	u32	addr_hi;
332 	u8	reserved[8];
333 };
334 
335 #define ISCSI_DEFAULT_MAX_OUTSTANDING_R2T 	(1)
336 
337 #define ISCSI_RAMROD_CMD_ID_UPDATE_CONN		(ISCSI_KCQE_OPCODE_UPDATE_CONN)
338 #define ISCSI_RAMROD_CMD_ID_INIT		(ISCSI_KCQE_OPCODE_INIT)
339 
340 #define CDU_REGION_NUMBER_XCM_AG 2
341 #define CDU_REGION_NUMBER_UCM_AG 4
342 
343 #define CDU_VALID_DATA(_cid, _region, _type)	\
344 	(((_cid) << 8) | (((_region)&0xf)<<4) | (((_type)&0xf)))
345 
346 #define CDU_CRC8(_cid, _region, _type)	\
347 	(calc_crc8(CDU_VALID_DATA(_cid, _region, _type), 0xff))
348 
349 #define CDU_RSRVD_VALUE_TYPE_A(_cid, _region, _type)	\
350 	(0x80 | ((CDU_CRC8(_cid, _region, _type)) & 0x7f))
351 
352 #define BNX2X_CONTEXT_MEM_SIZE		1024
353 #define BNX2X_FCOE_CID			16
354 
355 #define BNX2X_ISCSI_START_CID		18
356 #define BNX2X_ISCSI_NUM_CONNECTIONS	128
357 #define BNX2X_ISCSI_TASK_CONTEXT_SIZE	128
358 #define BNX2X_ISCSI_MAX_PENDING_R2TS	4
359 #define BNX2X_ISCSI_R2TQE_SIZE		8
360 #define BNX2X_ISCSI_HQ_BD_SIZE		64
361 #define BNX2X_ISCSI_GLB_BUF_SIZE	64
362 #define BNX2X_ISCSI_PBL_NOT_CACHED	0xff
363 #define BNX2X_ISCSI_PDU_HEADER_NOT_CACHED	0xff
364 
365 #define BNX2X_FCOE_NUM_CONNECTIONS	1024
366 
367 #define BNX2X_FCOE_L5_CID_BASE		MAX_ISCSI_TBL_SZ
368 
369 #define BNX2X_CHIP_IS_E2_PLUS(bp) (CHIP_IS_E2(bp) || CHIP_IS_E3(bp))
370 
371 #define BNX2X_RX_DESC_CNT		(BNX2_PAGE_SIZE / \
372 					 sizeof(struct eth_rx_bd))
373 #define BNX2X_MAX_RX_DESC_CNT		(BNX2X_RX_DESC_CNT - 2)
374 #define BNX2X_RCQ_DESC_CNT		(BNX2_PAGE_SIZE / \
375 					 sizeof(union eth_rx_cqe))
376 #define BNX2X_MAX_RCQ_DESC_CNT		(BNX2X_RCQ_DESC_CNT - 1)
377 
378 #define BNX2X_NEXT_RCQE(x) (((x) & BNX2X_MAX_RCQ_DESC_CNT) ==		\
379 		(BNX2X_MAX_RCQ_DESC_CNT - 1)) ?				\
380 		((x) + 2) : ((x) + 1)
381 
382 #define BNX2X_DEF_SB_ID			HC_SP_SB_ID
383 
384 #define BNX2X_SHMEM_MF_BLK_OFFSET	0x7e4
385 
386 #define BNX2X_SHMEM_ADDR(base, field)	(base + \
387 					 offsetof(struct shmem_region, field))
388 
389 #define BNX2X_SHMEM2_ADDR(base, field)	(base + \
390 					 offsetof(struct shmem2_region, field))
391 
392 #define BNX2X_SHMEM2_HAS(base, field)				\
393 		((base) &&					\
394 		 (CNIC_RD(dev, BNX2X_SHMEM2_ADDR(base, size)) >	\
395 		  offsetof(struct shmem2_region, field)))
396 
397 #define BNX2X_MF_CFG_ADDR(base, field)				\
398 			((base) + offsetof(struct mf_cfg, field))
399 
400 #ifndef ETH_MAX_RX_CLIENTS_E2
401 #define ETH_MAX_RX_CLIENTS_E2 		ETH_MAX_RX_CLIENTS_E1H
402 #endif
403 
404 #define CNIC_FUNC(cp)			((cp)->func)
405 
406 #define BNX2X_HW_CID(bp, x)		((BP_PORT(bp) << 23) | \
407 					 (BP_VN(bp) << 17) | (x))
408 
409 #define BNX2X_SW_CID(x)			(x & 0x1ffff)
410 
411 #define BNX2X_CL_QZONE_ID(bp, cli)					\
412 		(BNX2X_CHIP_IS_E2_PLUS(bp) ? cli :			\
413 		 cli + (BP_PORT(bp) * ETH_MAX_RX_CLIENTS_E1H))
414 
415 #ifndef MAX_STAT_COUNTER_ID
416 #define MAX_STAT_COUNTER_ID						\
417 	(CHIP_IS_E1H(bp) ? MAX_STAT_COUNTER_ID_E1H :			\
418 	 ((BNX2X_CHIP_IS_E2_PLUS(bp)) ? MAX_STAT_COUNTER_ID_E2 :	\
419 	  MAX_STAT_COUNTER_ID_E1))
420 #endif
421 
422 #define CNIC_SUPPORTS_FCOE(cp)						\
423 	(BNX2X_CHIP_IS_E2_PLUS(bp) && !NO_FCOE(bp))
424 
425 #define CNIC_RAMROD_TMO			(HZ / 4)
426 
427 #endif
428 
429