[linux-2.6-block.git] / drivers / net / ethernet / apm / xgene / xgene_enet_cle.h

/* Applied Micro X-Gene SoC Ethernet Classifier structures
 *
 * Copyright (c) 2016, Applied Micro Circuits Corporation
 * Authors: Khuong Dinh <kdinh@apm.com>
 *          Tanmay Inamdar <tinamdar@apm.com>
 *          Iyappan Subramanian <isubramanian@apm.com>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __XGENE_ENET_CLE_H__
#define __XGENE_ENET_CLE_H__

#include <linux/io.h>
#include <linux/random.h>

/* Register offsets */
#define INDADDR			0x04
#define INDCMD			0x08
#define INDCMD_STATUS		0x0c
#define DATA_RAM0		0x10
#define SNPTR0			0x0100
#define SPPTR0			0x0104
#define DFCLSRESDBPTR0		0x0108
#define DFCLSRESDB00		0x010c
#define RSS_CTRL0		0x0000013c

#define CLE_CMD_TO		10	/* ms */
#define CLE_PKTRAM_SIZE		256	/* bytes */
#define CLE_PORT_OFFSET		0x200
#define CLE_DRAM_REGS		17

#define CLE_DN_TYPE_LEN		2
#define CLE_DN_TYPE_POS		0
#define CLE_DN_LASTN_LEN	1
#define CLE_DN_LASTN_POS	2
#define CLE_DN_HLS_LEN		1
#define CLE_DN_HLS_POS		3
#define CLE_DN_EXT_LEN		2
#define	CLE_DN_EXT_POS		4
#define CLE_DN_BSTOR_LEN	2
#define CLE_DN_BSTOR_POS	6
#define CLE_DN_SBSTOR_LEN	2
#define CLE_DN_SBSTOR_POS	8
#define CLE_DN_RPTR_LEN		12
#define CLE_DN_RPTR_POS		12

#define CLE_BR_VALID_LEN	1
#define CLE_BR_VALID_POS	0
#define CLE_BR_NPPTR_LEN	9
#define CLE_BR_NPPTR_POS	1
#define CLE_BR_JB_LEN		1
#define CLE_BR_JB_POS		10
#define CLE_BR_JR_LEN		1
#define CLE_BR_JR_POS		11
#define CLE_BR_OP_LEN		3
#define CLE_BR_OP_POS		12
#define CLE_BR_NNODE_LEN	9
#define CLE_BR_NNODE_POS	15
#define CLE_BR_NBR_LEN		5
#define CLE_BR_NBR_POS		24

#define CLE_BR_DATA_LEN		16
#define CLE_BR_DATA_POS		0
#define CLE_BR_MASK_LEN		16
#define CLE_BR_MASK_POS		16

#define CLE_KN_PRIO_POS		0
#define CLE_KN_PRIO_LEN		3
#define CLE_KN_RPTR_POS		3
#define CLE_KN_RPTR_LEN		10
#define CLE_TYPE_POS		0
#define CLE_TYPE_LEN		2

#define CLE_DROP_POS		28
#define CLE_DROP_LEN		1
#define CLE_DSTQIDL_POS		25
#define CLE_DSTQIDL_LEN		7
#define CLE_DSTQIDH_POS		0
#define CLE_DSTQIDH_LEN		5
#define CLE_FPSEL_POS		21
#define CLE_FPSEL_LEN		4
#define CLE_PRIORITY_POS	5
#define CLE_PRIORITY_LEN	3

#define JMP_ABS			0
#define JMP_REL			1
#define JMP_FW			0
#define JMP_BW			1

enum xgene_cle_ptree_nodes {
	PKT_TYPE_NODE,
	PKT_PROT_NODE,
	RSS_IPV4_TCP_NODE,
	RSS_IPV4_UDP_NODE,
	LAST_NODE,
	MAX_NODES
};

enum xgene_cle_byte_store {
	NO_BYTE,
	FIRST_BYTE,
	SECOND_BYTE,
	BOTH_BYTES
};

/* Preclassification operation types */
enum xgene_cle_node_type {
	INV,
	KN,
	EWDN,
	RES_NODE
};

/* Preclassification operation types */
enum xgene_cle_op_type {
	EQT,
	NEQT,
	LTEQT,
	GTEQT,
	AND,
	NAND
};

enum xgene_cle_parser {
	PARSER0,
	PARSER1,
	PARSER2,
	PARSER_ALL
};

#define XGENE_CLE_DRAM(type)	(((type) & 0xf) << 28)
enum xgene_cle_dram_type {
	PKT_RAM,
	RSS_IDT,
	RSS_IPV4_HASH_SKEY,
	PTREE_RAM = 0xc,
	AVL_RAM,
	DB_RAM
};

enum xgene_cle_cmd_type {
	CLE_CMD_WR = 1,
	CLE_CMD_RD = 2,
	CLE_CMD_AVL_ADD = 8,
	CLE_CMD_AVL_DEL = 16,
	CLE_CMD_AVL_SRCH = 32
};

enum xgene_cle_ipv4_rss_hashtype {
	RSS_IPV4_8B,
	RSS_IPV4_12B,
};

enum xgene_cle_prot_type {
	XGENE_CLE_TCP,
	XGENE_CLE_UDP,
	XGENE_CLE_ESP,
	XGENE_CLE_OTHER
};

enum xgene_cle_prot_version {
	XGENE_CLE_IPV4,
};

enum xgene_cle_ptree_dbptrs {
	DB_RES_DROP,
	DB_RES_DEF,
	DB_RES_ACCEPT,
	DB_MAX_PTRS
};

/* RSS sideband signal info */
#define SB_IPFRAG_POS	0
#define SB_IPFRAG_LEN	1
#define SB_IPPROT_POS	1
#define SB_IPPROT_LEN	2
#define SB_IPVER_POS	3
#define SB_IPVER_LEN	1
#define SB_HDRLEN_POS	4
#define SB_HDRLEN_LEN	12

/* RSS indirection table */
#define XGENE_CLE_IDT_ENTRIES	128
#define IDT_DSTQID_POS		0
#define IDT_DSTQID_LEN		12
#define IDT_FPSEL_POS		12
#define IDT_FPSEL_LEN		4
#define IDT_NFPSEL_POS		16
#define IDT_NFPSEL_LEN		4

struct xgene_cle_ptree_branch {
	bool valid;
	u16 next_packet_pointer;
	bool jump_bw;
	bool jump_rel;
	u8 operation;
	u16 next_node;
	u8 next_branch;
	u16 data;
	u16 mask;
};

struct xgene_cle_ptree_ewdn {
	u8 node_type;
	bool last_node;
	bool hdr_len_store;
	u8 hdr_extn;
	u8 byte_store;
	u8 search_byte_store;
	u16 result_pointer;
	u8 num_branches;
	struct xgene_cle_ptree_branch branch[6];
};

struct xgene_cle_ptree_key {
	u8 priority;
	u16 result_pointer;
};

struct xgene_cle_ptree_kn {
	u8 node_type;
	u8 num_keys;
	struct xgene_cle_ptree_key key[32];
};

struct xgene_cle_dbptr {
	u8 split_boundary;
	u8 mirror_nxtfpsel;
	u8 mirror_fpsel;
	u16 mirror_dstqid;
	u8 drop;
	u8 mirror;
	u8 hdr_data_split;
	u64 hopinfomsbs;
	u8 DR;
	u8 HR;
	u64 hopinfomlsbs;
	u16 h0enq_num;
	u8 h0fpsel;
	u8 nxtfpsel;
	u8 fpsel;
	u16 dstqid;
	u8 cle_priority;
	u8 cle_flowgroup;
	u8 cle_perflow;
	u8 cle_insert_timestamp;
	u8 stash;
	u8 in;
	u8 perprioen;
	u8 perflowgroupen;
	u8 perflowen;
	u8 selhash;
	u8 selhdrext;
	u8 mirror_nxtfpsel_msb;
	u8 mirror_fpsel_msb;
	u8 hfpsel_msb;
	u8 nxtfpsel_msb;
	u8 fpsel_msb;
};

struct xgene_cle_ptree {
	struct xgene_cle_ptree_ewdn *dn;
	struct xgene_cle_ptree_kn *kn;
	struct xgene_cle_dbptr *dbptr;
	u32 num_dn;
	u32 num_kn;
	u32 num_dbptr;
	u32 start_node;
	u32 start_pkt;
	u32 start_dbptr;
};

struct xgene_enet_cle {
	void __iomem *base;
	struct xgene_cle_ptree ptree;
	enum xgene_cle_parser active_parser;
	u32 parsers;
	u32 max_nodes;
	u32 max_dbptrs;
	u32 jump_bytes;
};

extern struct xgene_cle_ops xgene_cle3in_ops;

#endif /* __XGENE_ENET_CLE_H__ */
Commit	Line	Data
76f94a9c IS	1	/* Applied Micro X-Gene SoC Ethernet Classifier structures
	2	*
	3	* Copyright (c) 2016, Applied Micro Circuits Corporation
	4	* Authors: Khuong Dinh <kdinh@apm.com>
	5	* Tanmay Inamdar <tinamdar@apm.com>
	6	* Iyappan Subramanian <isubramanian@apm.com>
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2 of the License, or (at your
	11	* option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	20	*/
	21
	22	#ifndef __XGENE_ENET_CLE_H__
	23	#define __XGENE_ENET_CLE_H__
	24
	25	#include <linux/io.h>
	26	#include <linux/random.h>
	27
	28	/* Register offsets */
	29	#define INDADDR 0x04
	30	#define INDCMD 0x08
	31	#define INDCMD_STATUS 0x0c
	32	#define DATA_RAM0 0x10
	33	#define SNPTR0 0x0100
	34	#define SPPTR0 0x0104
	35	#define DFCLSRESDBPTR0 0x0108
	36	#define DFCLSRESDB00 0x010c
fc4262d2	37	#define RSS_CTRL0 0x0000013c
76f94a9c IS	38
	39	#define CLE_CMD_TO 10 /* ms */
	40	#define CLE_PKTRAM_SIZE 256 /* bytes */
	41	#define CLE_PORT_OFFSET 0x200
	42	#define CLE_DRAM_REGS 17
	43
	44	#define CLE_DN_TYPE_LEN 2
	45	#define CLE_DN_TYPE_POS 0
	46	#define CLE_DN_LASTN_LEN 1
	47	#define CLE_DN_LASTN_POS 2
	48	#define CLE_DN_HLS_LEN 1
	49	#define CLE_DN_HLS_POS 3
	50	#define CLE_DN_EXT_LEN 2
	51	#define CLE_DN_EXT_POS 4
	52	#define CLE_DN_BSTOR_LEN 2
	53	#define CLE_DN_BSTOR_POS 6
	54	#define CLE_DN_SBSTOR_LEN 2
	55	#define CLE_DN_SBSTOR_POS 8
	56	#define CLE_DN_RPTR_LEN 12
	57	#define CLE_DN_RPTR_POS 12
	58
	59	#define CLE_BR_VALID_LEN 1
	60	#define CLE_BR_VALID_POS 0
	61	#define CLE_BR_NPPTR_LEN 9
	62	#define CLE_BR_NPPTR_POS 1
	63	#define CLE_BR_JB_LEN 1
	64	#define CLE_BR_JB_POS 10
	65	#define CLE_BR_JR_LEN 1
	66	#define CLE_BR_JR_POS 11
	67	#define CLE_BR_OP_LEN 3
	68	#define CLE_BR_OP_POS 12
	69	#define CLE_BR_NNODE_LEN 9
	70	#define CLE_BR_NNODE_POS 15
	71	#define CLE_BR_NBR_LEN 5
	72	#define CLE_BR_NBR_POS 24
	73
	74	#define CLE_BR_DATA_LEN 16
	75	#define CLE_BR_DATA_POS 0
	76	#define CLE_BR_MASK_LEN 16
	77	#define CLE_BR_MASK_POS 16
	78
	79	#define CLE_KN_PRIO_POS 0
	80	#define CLE_KN_PRIO_LEN 3
	81	#define CLE_KN_RPTR_POS 3
	82	#define CLE_KN_RPTR_LEN 10
	83	#define CLE_TYPE_POS 0
	84	#define CLE_TYPE_LEN 2
	85
b30cfd24 IS	86	#define CLE_DROP_POS 28
b30cfd24 IS	87	#define CLE_DROP_LEN 1
76f94a9c IS	88	#define CLE_DSTQIDL_POS 25
	89	#define CLE_DSTQIDL_LEN 7
	90	#define CLE_DSTQIDH_POS 0
	91	#define CLE_DSTQIDH_LEN 5
	92	#define CLE_FPSEL_POS 21
	93	#define CLE_FPSEL_LEN 4
	94	#define CLE_PRIORITY_POS 5
	95	#define CLE_PRIORITY_LEN 3
	96
	97	#define JMP_ABS 0
	98	#define JMP_REL 1
	99	#define JMP_FW 0
	100	#define JMP_BW 1
	101
	102	enum xgene_cle_ptree_nodes {
	103	PKT_TYPE_NODE,
fc4262d2 IS	104	PKT_PROT_NODE,
	105	RSS_IPV4_TCP_NODE,
	106	RSS_IPV4_UDP_NODE,
76f94a9c IS	107	LAST_NODE,
	108	MAX_NODES
	109	};
	110
	111	enum xgene_cle_byte_store {
	112	NO_BYTE,
	113	FIRST_BYTE,
	114	SECOND_BYTE,
	115	BOTH_BYTES
	116	};
	117
	118	/* Preclassification operation types */
	119	enum xgene_cle_node_type {
	120	INV,
	121	KN,
	122	EWDN,
	123	RES_NODE
	124	};
	125
	126	/* Preclassification operation types */
	127	enum xgene_cle_op_type {
	128	EQT,
	129	NEQT,
	130	LTEQT,
	131	GTEQT,
	132	AND,
	133	NAND
	134	};
	135
	136	enum xgene_cle_parser {
	137	PARSER0,
	138	PARSER1,
	139	PARSER2,
	140	PARSER_ALL
	141	};
	142
	143	#define XGENE_CLE_DRAM(type) (((type) & 0xf) << 28)
	144	enum xgene_cle_dram_type {
	145	PKT_RAM,
fc4262d2 IS	146	RSS_IDT,
fc4262d2 IS	147	RSS_IPV4_HASH_SKEY,
76f94a9c IS	148	PTREE_RAM = 0xc,
	149	AVL_RAM,
	150	DB_RAM
	151	};
	152
	153	enum xgene_cle_cmd_type {
	154	CLE_CMD_WR = 1,
	155	CLE_CMD_RD = 2,
	156	CLE_CMD_AVL_ADD = 8,
	157	CLE_CMD_AVL_DEL = 16,
	158	CLE_CMD_AVL_SRCH = 32
	159	};
	160
fc4262d2 IS	161	enum xgene_cle_ipv4_rss_hashtype {
	162	RSS_IPV4_8B,
	163	RSS_IPV4_12B,
	164	};
	165
	166	enum xgene_cle_prot_type {
	167	XGENE_CLE_TCP,
	168	XGENE_CLE_UDP,
	169	XGENE_CLE_ESP,
	170	XGENE_CLE_OTHER
	171	};
	172
	173	enum xgene_cle_prot_version {
	174	XGENE_CLE_IPV4,
	175	};
	176
76f94a9c IS	177	enum xgene_cle_ptree_dbptrs {
	178	DB_RES_DROP,
	179	DB_RES_DEF,
	180	DB_RES_ACCEPT,
	181	DB_MAX_PTRS
	182	};
	183
fc4262d2 IS	184	/* RSS sideband signal info */
	185	#define SB_IPFRAG_POS 0
	186	#define SB_IPFRAG_LEN 1
	187	#define SB_IPPROT_POS 1
	188	#define SB_IPPROT_LEN 2
	189	#define SB_IPVER_POS 3
	190	#define SB_IPVER_LEN 1
	191	#define SB_HDRLEN_POS 4
	192	#define SB_HDRLEN_LEN 12
	193
	194	/* RSS indirection table */
	195	#define XGENE_CLE_IDT_ENTRIES 128
	196	#define IDT_DSTQID_POS 0
	197	#define IDT_DSTQID_LEN 12
	198	#define IDT_FPSEL_POS 12
	199	#define IDT_FPSEL_LEN 4
	200	#define IDT_NFPSEL_POS 16
	201	#define IDT_NFPSEL_LEN 4
	202
76f94a9c IS	203	struct xgene_cle_ptree_branch {
	204	bool valid;
	205	u16 next_packet_pointer;
	206	bool jump_bw;
	207	bool jump_rel;
	208	u8 operation;
	209	u16 next_node;
	210	u8 next_branch;
	211	u16 data;
	212	u16 mask;
	213	};
	214
	215	struct xgene_cle_ptree_ewdn {
	216	u8 node_type;
	217	bool last_node;
	218	bool hdr_len_store;
	219	u8 hdr_extn;
	220	u8 byte_store;
	221	u8 search_byte_store;
	222	u16 result_pointer;
	223	u8 num_branches;
	224	struct xgene_cle_ptree_branch branch[6];
	225	};
	226
	227	struct xgene_cle_ptree_key {
	228	u8 priority;
	229	u16 result_pointer;
	230	};
	231
	232	struct xgene_cle_ptree_kn {
	233	u8 node_type;
	234	u8 num_keys;
	235	struct xgene_cle_ptree_key key[32];
	236	};
	237
	238	struct xgene_cle_dbptr {
	239	u8 split_boundary;
	240	u8 mirror_nxtfpsel;
	241	u8 mirror_fpsel;
	242	u16 mirror_dstqid;
	243	u8 drop;
	244	u8 mirror;
	245	u8 hdr_data_split;
	246	u64 hopinfomsbs;
	247	u8 DR;
	248	u8 HR;
	249	u64 hopinfomlsbs;
	250	u16 h0enq_num;
	251	u8 h0fpsel;
	252	u8 nxtfpsel;
	253	u8 fpsel;
	254	u16 dstqid;
	255	u8 cle_priority;
	256	u8 cle_flowgroup;
	257	u8 cle_perflow;
	258	u8 cle_insert_timestamp;
	259	u8 stash;
	260	u8 in;
	261	u8 perprioen;
	262	u8 perflowgroupen;
	263	u8 perflowen;
	264	u8 selhash;
	265	u8 selhdrext;
	266	u8 mirror_nxtfpsel_msb;
267	u8 mirror_fpsel_msb;
268	u8 hfpsel_msb;
269	u8 nxtfpsel_msb;
270	u8 fpsel_msb;
271	};
272
273	struct xgene_cle_ptree {
274	struct xgene_cle_ptree_ewdn *dn;
275	struct xgene_cle_ptree_kn *kn;
276	struct xgene_cle_dbptr *dbptr;
277	u32 num_dn;
278	u32 num_kn;
279	u32 num_dbptr;
280	u32 start_node;
281	u32 start_pkt;
282	u32 start_dbptr;
283	};
284
285	struct xgene_enet_cle {
286	void __iomem *base;
287	struct xgene_cle_ptree ptree;
288	enum xgene_cle_parser active_parser;
289	u32 parsers;
290	u32 max_nodes;
291	u32 max_dbptrs;
292	u32 jump_bytes;
293	};
294
295	extern struct xgene_cle_ops xgene_cle3in_ops;
296
297	#endif /* __XGENE_ENET_CLE_H__ */