aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/chelsio/cxgb4/t4_hw.h
blob: 7f59ca458431d1c25c4f680a01c713e2858c730a (plain) (blame)
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
/*
 * This file is part of the Chelsio T4 Ethernet driver for Linux.
 *
 * Copyright (c) 2003-2014 Chelsio Communications, Inc. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed 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, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __T4_HW_H
#define __T4_HW_H

#include <linux/types.h>

enum {
	NCHAN          = 4,     /* # of HW channels */
	MAX_MTU        = 9600,  /* max MAC MTU, excluding header + FCS */
	EEPROMSIZE     = 17408, /* Serial EEPROM physical size */
	EEPROMVSIZE    = 32768, /* Serial EEPROM virtual address space size */
	EEPROMPFSIZE   = 1024,  /* EEPROM writable area size for PFn, n>0 */
	RSS_NENTRIES   = 2048,  /* # of entries in RSS mapping table */
	TCB_SIZE       = 128,   /* TCB size */
	NMTUS          = 16,    /* size of MTU table */
	NCCTRL_WIN     = 32,    /* # of congestion control windows */
	PM_NSTATS      = 5,     /* # of PM stats */
	T6_PM_NSTATS   = 7,     /* # of PM stats in T6 */
	MBOX_LEN       = 64,    /* mailbox size in bytes */
	TRACE_LEN      = 112,   /* length of trace data and mask */
	FILTER_OPT_LEN = 36,    /* filter tuple width for optional components */
};

enum {
	CIM_NUM_IBQ    = 6,     /* # of CIM IBQs */
	CIM_NUM_OBQ    = 6,     /* # of CIM OBQs */
	CIM_NUM_OBQ_T5 = 8,     /* # of CIM OBQs for T5 adapter */
	CIMLA_SIZE     = 2048,  /* # of 32-bit words in CIM LA */
	CIM_PIFLA_SIZE = 64,    /* # of 192-bit words in CIM PIF LA */
	CIM_MALA_SIZE  = 64,    /* # of 160-bit words in CIM MA LA */
	CIM_IBQ_SIZE   = 128,   /* # of 128-bit words in a CIM IBQ */
	CIM_OBQ_SIZE   = 128,   /* # of 128-bit words in a CIM OBQ */
	TPLA_SIZE      = 128,   /* # of 64-bit words in TP LA */
	ULPRX_LA_SIZE  = 512,   /* # of 256-bit words in ULP_RX LA */
};

enum {
	SF_PAGE_SIZE = 256,           /* serial flash page size */
	SF_SEC_SIZE = 64 * 1024,      /* serial flash sector size */
};

enum { RSP_TYPE_FLBUF, RSP_TYPE_CPL, RSP_TYPE_INTR }; /* response entry types */

enum { MBOX_OWNER_NONE, MBOX_OWNER_FW, MBOX_OWNER_DRV };    /* mailbox owners */

enum {
	SGE_MAX_WR_LEN = 512,     /* max WR size in bytes */
	SGE_NTIMERS = 6,          /* # of interrupt holdoff timer values */
	SGE_NCOUNTERS = 4,        /* # of interrupt packet counter values */
	SGE_MAX_IQ_SIZE = 65520,

	SGE_TIMER_RSTRT_CNTR = 6, /* restart RX packet threshold counter */
	SGE_TIMER_UPD_CIDX = 7,   /* update cidx only */

	SGE_EQ_IDXSIZE = 64,      /* egress queue pidx/cidx unit size */

	SGE_INTRDST_PCI = 0,      /* interrupt destination is PCI-E */
	SGE_INTRDST_IQ = 1,       /*   destination is an ingress queue */

	SGE_UPDATEDEL_NONE = 0,   /* ingress queue pidx update delivery */
	SGE_UPDATEDEL_INTR = 1,   /*   interrupt */
	SGE_UPDATEDEL_STPG = 2,   /*   status page */
	SGE_UPDATEDEL_BOTH = 3,   /*   interrupt and status page */

	SGE_HOSTFCMODE_NONE = 0,  /* egress queue cidx updates */
	SGE_HOSTFCMODE_IQ = 1,    /*   sent to ingress queue */
	SGE_HOSTFCMODE_STPG = 2,  /*   sent to status page */
	SGE_HOSTFCMODE_BOTH = 3,  /*   ingress queue and status page */

	SGE_FETCHBURSTMIN_16B = 0,/* egress queue descriptor fetch minimum */
	SGE_FETCHBURSTMIN_32B = 1,
	SGE_FETCHBURSTMIN_64B = 2,
	SGE_FETCHBURSTMIN_128B = 3,

	SGE_FETCHBURSTMAX_64B = 0,/* egress queue descriptor fetch maximum */
	SGE_FETCHBURSTMAX_128B = 1,
	SGE_FETCHBURSTMAX_256B = 2,
	SGE_FETCHBURSTMAX_512B = 3,

	SGE_CIDXFLUSHTHRESH_1 = 0,/* egress queue cidx flush threshold */
	SGE_CIDXFLUSHTHRESH_2 = 1,
	SGE_CIDXFLUSHTHRESH_4 = 2,
	SGE_CIDXFLUSHTHRESH_8 = 3,
	SGE_CIDXFLUSHTHRESH_16 = 4,
	SGE_CIDXFLUSHTHRESH_32 = 5,
	SGE_CIDXFLUSHTHRESH_64 = 6,
	SGE_CIDXFLUSHTHRESH_128 = 7,

	SGE_INGPADBOUNDARY_SHIFT = 5,/* ingress queue pad boundary */
};

/* PCI-e memory window access */
enum pcie_memwin {
	MEMWIN_NIC      = 0,
	MEMWIN_RSVD1    = 1,
	MEMWIN_RSVD2    = 2,
	MEMWIN_RDMA     = 3,
	MEMWIN_RSVD4    = 4,
	MEMWIN_FOISCSI  = 5,
	MEMWIN_CSIOSTOR = 6,
	MEMWIN_RSVD7    = 7,
};

struct sge_qstat {                /* data written to SGE queue status entries */
	__be32 qid;
	__be16 cidx;
	__be16 pidx;
};

/*
 * Structure for last 128 bits of response descriptors
 */
struct rsp_ctrl {
	__be32 hdrbuflen_pidx;
	__be32 pldbuflen_qid;
	union {
		u8 type_gen;
		__be64 last_flit;
	};
};

#define RSPD_NEWBUF_S    31
#define RSPD_NEWBUF_V(x) ((x) << RSPD_NEWBUF_S)
#define RSPD_NEWBUF_F    RSPD_NEWBUF_V(1U)

#define RSPD_LEN_S    0
#define RSPD_LEN_M    0x7fffffff
#define RSPD_LEN_G(x) (((x) >> RSPD_LEN_S) & RSPD_LEN_M)

#define RSPD_QID_S    RSPD_LEN_S
#define RSPD_QID_M    RSPD_LEN_M
#define RSPD_QID_G(x) RSPD_LEN_G(x)

#define RSPD_GEN_S    7

#define RSPD_TYPE_S    4
#define RSPD_TYPE_M    0x3
#define RSPD_TYPE_G(x) (((x) >> RSPD_TYPE_S) & RSPD_TYPE_M)

/* Rx queue interrupt deferral fields: counter enable and timer index */
#define QINTR_CNT_EN_S    0
#define QINTR_CNT_EN_V(x) ((x) << QINTR_CNT_EN_S)
#define QINTR_CNT_EN_F    QINTR_CNT_EN_V(1U)

#define QINTR_TIMER_IDX_S    1
#define QINTR_TIMER_IDX_M    0x7
#define QINTR_TIMER_IDX_V(x) ((x) << QINTR_TIMER_IDX_S)
#define QINTR_TIMER_IDX_G(x) (((x) >> QINTR_TIMER_IDX_S) & QINTR_TIMER_IDX_M)

/*
 * Flash layout.
 */
#define FLASH_START(start)	((start) * SF_SEC_SIZE)
#define FLASH_MAX_SIZE(nsecs)	((nsecs) * SF_SEC_SIZE)

enum {
	/*
	 * Various Expansion-ROM boot images, etc.
	 */
	FLASH_EXP_ROM_START_SEC = 0,
	FLASH_EXP_ROM_NSECS = 6,
	FLASH_EXP_ROM_START = FLASH_START(FLASH_EXP_ROM_START_SEC),
	FLASH_EXP_ROM_MAX_SIZE = FLASH_MAX_SIZE(FLASH_EXP_ROM_NSECS),

	/*
	 * iSCSI Boot Firmware Table (iBFT) and other driver-related
	 * parameters ...
	 */
	FLASH_IBFT_START_SEC = 6,
	FLASH_IBFT_NSECS = 1,
	FLASH_IBFT_START = FLASH_START(FLASH_IBFT_START_SEC),
	FLASH_IBFT_MAX_SIZE = FLASH_MAX_SIZE(FLASH_IBFT_NSECS),

	/*
	 * Boot configuration data.
	 */
	FLASH_BOOTCFG_START_SEC = 7,
	FLASH_BOOTCFG_NSECS = 1,
	FLASH_BOOTCFG_START = FLASH_START(FLASH_BOOTCFG_START_SEC),
	FLASH_BOOTCFG_MAX_SIZE = FLASH_MAX_SIZE(FLASH_BOOTCFG_NSECS),

	/*
	 * Location of firmware image in FLASH.
	 */
	FLASH_FW_START_SEC = 8,
	FLASH_FW_NSECS = 16,
	FLASH_FW_START = FLASH_START(FLASH_FW_START_SEC),
	FLASH_FW_MAX_SIZE = FLASH_MAX_SIZE(FLASH_FW_NSECS),

	/* Location of bootstrap firmware image in FLASH.
	 */
	FLASH_FWBOOTSTRAP_START_SEC = 27,
	FLASH_FWBOOTSTRAP_NSECS = 1,
	FLASH_FWBOOTSTRAP_START = FLASH_START(FLASH_FWBOOTSTRAP_START_SEC),
	FLASH_FWBOOTSTRAP_MAX_SIZE = FLASH_MAX_SIZE(FLASH_FWBOOTSTRAP_NSECS),

	/*
	 * iSCSI persistent/crash information.
	 */
	FLASH_ISCSI_CRASH_START_SEC = 29,
	FLASH_ISCSI_CRASH_NSECS = 1,
	FLASH_ISCSI_CRASH_START = FLASH_START(FLASH_ISCSI_CRASH_START_SEC),
	FLASH_ISCSI_CRASH_MAX_SIZE = FLASH_MAX_SIZE(FLASH_ISCSI_CRASH_NSECS),

	/*
	 * FCoE persistent/crash information.
	 */
	FLASH_FCOE_CRASH_START_SEC = 30,
	FLASH_FCOE_CRASH_NSECS = 1,
	FLASH_FCOE_CRASH_START = FLASH_START(FLASH_FCOE_CRASH_START_SEC),
	FLASH_FCOE_CRASH_MAX_SIZE = FLASH_MAX_SIZE(FLASH_FCOE_CRASH_NSECS),

	/*
	 * Location of Firmware Configuration File in FLASH.  Since the FPGA
	 * "FLASH" is smaller we need to store the Configuration File in a
	 * different location -- which will overlap the end of the firmware
	 * image if firmware ever gets that large ...
	 */
	FLASH_CFG_START_SEC = 31,
	FLASH_CFG_NSECS = 1,
	FLASH_CFG_START = FLASH_START(FLASH_CFG_START_SEC),
	FLASH_CFG_MAX_SIZE = FLASH_MAX_SIZE(FLASH_CFG_NSECS),

	/* We don't support FLASH devices which can't support the full
	 * standard set of sections which we need for normal
	 * operations.
	 */
	FLASH_MIN_SIZE = FLASH_CFG_START + FLASH_CFG_MAX_SIZE,

	FLASH_FPGA_CFG_START_SEC = 15,
	FLASH_FPGA_CFG_START = FLASH_START(FLASH_FPGA_CFG_START_SEC),

	/*
	 * Sectors 32-63 are reserved for FLASH failover.
	 */
};

#undef FLASH_START
#undef FLASH_MAX_SIZE

#define SGE_TIMESTAMP_S 0
#define SGE_TIMESTAMP_M 0xfffffffffffffffULL
#define SGE_TIMESTAMP_V(x) ((__u64)(x) << SGE_TIMESTAMP_S)
#define SGE_TIMESTAMP_G(x) (((__u64)(x) >> SGE_TIMESTAMP_S) & SGE_TIMESTAMP_M)

#endif /* __T4_HW_H */