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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/************************************************************************
ravinandan.arakali@neterion.com776bd202005-09-06 21:36:56 -07002 * s2io.h: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC
Jon Mason926bd902010-07-15 08:47:26 +00003 * Copyright(c) 2002-2010 Exar Corp.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004
5 * This software may be used and distributed according to the terms of
6 * the GNU General Public License (GPL), incorporated herein by reference.
7 * Drivers based on or derived from this code fall under the GPL and must
8 * retain the authorship, copyright and license notice. This file is not
9 * a complete program and may only be used when the entire operating
10 * system is licensed under the GPL.
11 * See the file COPYING in this distribution for more information.
12 ************************************************************************/
13#ifndef _S2IO_H
14#define _S2IO_H
15
16#define TBD 0
Jiri Slabyb7b5a122007-10-18 23:40:29 -070017#define s2BIT(loc) (0x8000000000000000ULL >> (loc))
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#define vBIT(val, loc, sz) (((u64)val) << (64-loc-sz))
19#define INV(d) ((d&0xff)<<24) | (((d>>8)&0xff)<<16) | (((d>>16)&0xff)<<8)| ((d>>24)&0xff)
20
Linus Torvalds1da177e2005-04-16 15:20:36 -070021#undef SUCCESS
22#define SUCCESS 0
23#define FAILURE -1
Sivakumar Subramani19a60522007-01-31 13:30:49 -050024#define S2IO_MINUS_ONE 0xFFFFFFFFFFFFFFFFULL
Sreenivasa Honnurfaa4f792008-01-24 01:45:43 -080025#define S2IO_DISABLE_MAC_ENTRY 0xFFFFFFFFFFFFULL
Sivakumar Subramani19a60522007-01-31 13:30:49 -050026#define S2IO_MAX_PCI_CONFIG_SPACE_REINIT 100
Sivakumar Subramani9fc93a42007-02-24 01:57:32 -050027#define S2IO_BIT_RESET 1
28#define S2IO_BIT_SET 2
Ananda Rajubd1034f2006-04-21 19:20:22 -040029#define CHECKBIT(value, nbit) (value & (1 << nbit))
30
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -070031/* Maximum time to flicker LED when asked to identify NIC using ethtool */
32#define MAX_FLICKER_TIME 60000 /* 60 Secs */
33
Linus Torvalds1da177e2005-04-16 15:20:36 -070034/* Maximum outstanding splits to be configured into xena. */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -050035enum {
Linus Torvalds1da177e2005-04-16 15:20:36 -070036 XENA_ONE_SPLIT_TRANSACTION = 0,
37 XENA_TWO_SPLIT_TRANSACTION = 1,
38 XENA_THREE_SPLIT_TRANSACTION = 2,
39 XENA_FOUR_SPLIT_TRANSACTION = 3,
40 XENA_EIGHT_SPLIT_TRANSACTION = 4,
41 XENA_TWELVE_SPLIT_TRANSACTION = 5,
42 XENA_SIXTEEN_SPLIT_TRANSACTION = 6,
43 XENA_THIRTYTWO_SPLIT_TRANSACTION = 7
Ralf Baechle1ee6dd72007-01-31 14:09:29 -050044};
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#define XENA_MAX_OUTSTANDING_SPLITS(n) (n << 4)
46
47/* OS concerned variables and constants */
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -070048#define WATCH_DOG_TIMEOUT 15*HZ
49#define EFILL 0x1234
50#define ALIGN_SIZE 127
51#define PCIX_COMMAND_REGISTER 0x62
Linus Torvalds1da177e2005-04-16 15:20:36 -070052
53/*
54 * Debug related variables.
55 */
56/* different debug levels. */
57#define ERR_DBG 0
58#define INIT_DBG 1
59#define INFO_DBG 2
60#define TX_DBG 3
61#define INTR_DBG 4
62
63/* Global variable that defines the present debug level of the driver. */
Adrian Bunk26df54b2006-01-14 03:09:40 +010064static int debug_level = ERR_DBG;
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
66/* DEBUG message print. */
Joe Perches9e39f7c2009-08-25 08:52:00 +000067#define DBG_PRINT(dbg_level, fmt, args...) do { \
Breno Leitao54470802010-07-26 15:37:30 -070068 if (dbg_level <= debug_level) \
Joe Perches9e39f7c2009-08-25 08:52:00 +000069 pr_info(fmt, ##args); \
70 } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -070071
72/* Protocol assist features of the NIC */
73#define L3_CKSUM_OK 0xFFFF
74#define L4_CKSUM_OK 0xFFFF
75#define S2IO_JUMBO_SIZE 9600
76
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -070077/* Driver statistics maintained by driver */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -050078struct swStat {
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -070079 unsigned long long single_ecc_errs;
80 unsigned long long double_ecc_errs;
Ananda Rajubd1034f2006-04-21 19:20:22 -040081 unsigned long long parity_err_cnt;
82 unsigned long long serious_err_cnt;
83 unsigned long long soft_reset_cnt;
84 unsigned long long fifo_full_cnt;
Sivakumar Subramani8116f3c2007-09-17 13:05:35 -070085 unsigned long long ring_full_cnt[8];
Ravinandan Arakali7d3d04392006-01-25 14:53:07 -050086 /* LRO statistics */
87 unsigned long long clubbed_frms_cnt;
88 unsigned long long sending_both;
89 unsigned long long outof_sequence_pkts;
90 unsigned long long flush_max_pkts;
91 unsigned long long sum_avg_pkts_aggregated;
92 unsigned long long num_aggregations;
Sreenivasa Honnurc53d4942007-05-10 04:18:54 -040093 /* Other statistics */
94 unsigned long long mem_alloc_fail_cnt;
Veena Parat491abf22007-07-23 02:37:14 -040095 unsigned long long pci_map_fail_cnt;
Sreenivasa Honnurc53d4942007-05-10 04:18:54 -040096 unsigned long long watchdog_timer_cnt;
Sreenivasa Honnur491976b2007-05-10 04:22:25 -040097 unsigned long long mem_allocated;
98 unsigned long long mem_freed;
99 unsigned long long link_up_cnt;
100 unsigned long long link_down_cnt;
101 unsigned long long link_up_time;
102 unsigned long long link_down_time;
103
104 /* Transfer Code statistics */
105 unsigned long long tx_buf_abort_cnt;
106 unsigned long long tx_desc_abort_cnt;
107 unsigned long long tx_parity_err_cnt;
108 unsigned long long tx_link_loss_cnt;
109 unsigned long long tx_list_proc_err_cnt;
110
111 unsigned long long rx_parity_err_cnt;
112 unsigned long long rx_abort_cnt;
113 unsigned long long rx_parity_abort_cnt;
114 unsigned long long rx_rda_fail_cnt;
115 unsigned long long rx_unkn_prot_cnt;
116 unsigned long long rx_fcs_err_cnt;
117 unsigned long long rx_buf_size_err_cnt;
118 unsigned long long rx_rxd_corrupt_cnt;
119 unsigned long long rx_unkn_err_cnt;
Sivakumar Subramani8116f3c2007-09-17 13:05:35 -0700120
121 /* Error/alarm statistics*/
122 unsigned long long tda_err_cnt;
123 unsigned long long pfc_err_cnt;
124 unsigned long long pcc_err_cnt;
125 unsigned long long tti_err_cnt;
126 unsigned long long lso_err_cnt;
127 unsigned long long tpa_err_cnt;
128 unsigned long long sm_err_cnt;
129 unsigned long long mac_tmac_err_cnt;
130 unsigned long long mac_rmac_err_cnt;
131 unsigned long long xgxs_txgxs_err_cnt;
132 unsigned long long xgxs_rxgxs_err_cnt;
133 unsigned long long rc_err_cnt;
134 unsigned long long prc_pcix_err_cnt;
135 unsigned long long rpa_err_cnt;
136 unsigned long long rda_err_cnt;
137 unsigned long long rti_err_cnt;
138 unsigned long long mc_err_cnt;
139
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500140};
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700141
Ananda Rajubd1034f2006-04-21 19:20:22 -0400142/* Xpak releated alarm and warnings */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500143struct xpakStat {
Ananda Rajubd1034f2006-04-21 19:20:22 -0400144 u64 alarm_transceiver_temp_high;
145 u64 alarm_transceiver_temp_low;
146 u64 alarm_laser_bias_current_high;
147 u64 alarm_laser_bias_current_low;
148 u64 alarm_laser_output_power_high;
149 u64 alarm_laser_output_power_low;
150 u64 warn_transceiver_temp_high;
151 u64 warn_transceiver_temp_low;
152 u64 warn_laser_bias_current_high;
153 u64 warn_laser_bias_current_low;
154 u64 warn_laser_output_power_high;
155 u64 warn_laser_output_power_low;
156 u64 xpak_regs_stat;
157 u32 xpak_timer_count;
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500158};
Ananda Rajubd1034f2006-04-21 19:20:22 -0400159
160
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161/* The statistics block of Xena */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500162struct stat_block {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163/* Tx MAC statistics counters. */
Al Viro107c3a72006-08-13 15:38:04 -0400164 __le32 tmac_data_octets;
165 __le32 tmac_frms;
166 __le64 tmac_drop_frms;
167 __le32 tmac_bcst_frms;
168 __le32 tmac_mcst_frms;
169 __le64 tmac_pause_ctrl_frms;
170 __le32 tmac_ucst_frms;
171 __le32 tmac_ttl_octets;
172 __le32 tmac_any_err_frms;
173 __le32 tmac_nucst_frms;
174 __le64 tmac_ttl_less_fb_octets;
175 __le64 tmac_vld_ip_octets;
176 __le32 tmac_drop_ip;
177 __le32 tmac_vld_ip;
178 __le32 tmac_rst_tcp;
179 __le32 tmac_icmp;
180 __le64 tmac_tcp;
181 __le32 reserved_0;
182 __le32 tmac_udp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
184/* Rx MAC Statistics counters. */
Al Viro107c3a72006-08-13 15:38:04 -0400185 __le32 rmac_data_octets;
186 __le32 rmac_vld_frms;
187 __le64 rmac_fcs_err_frms;
188 __le64 rmac_drop_frms;
189 __le32 rmac_vld_bcst_frms;
190 __le32 rmac_vld_mcst_frms;
191 __le32 rmac_out_rng_len_err_frms;
192 __le32 rmac_in_rng_len_err_frms;
193 __le64 rmac_long_frms;
194 __le64 rmac_pause_ctrl_frms;
195 __le64 rmac_unsup_ctrl_frms;
196 __le32 rmac_accepted_ucst_frms;
197 __le32 rmac_ttl_octets;
198 __le32 rmac_discarded_frms;
199 __le32 rmac_accepted_nucst_frms;
200 __le32 reserved_1;
201 __le32 rmac_drop_events;
202 __le64 rmac_ttl_less_fb_octets;
203 __le64 rmac_ttl_frms;
204 __le64 reserved_2;
205 __le32 rmac_usized_frms;
206 __le32 reserved_3;
207 __le32 rmac_frag_frms;
208 __le32 rmac_osized_frms;
209 __le32 reserved_4;
210 __le32 rmac_jabber_frms;
211 __le64 rmac_ttl_64_frms;
212 __le64 rmac_ttl_65_127_frms;
213 __le64 reserved_5;
214 __le64 rmac_ttl_128_255_frms;
215 __le64 rmac_ttl_256_511_frms;
216 __le64 reserved_6;
217 __le64 rmac_ttl_512_1023_frms;
218 __le64 rmac_ttl_1024_1518_frms;
219 __le32 rmac_ip;
220 __le32 reserved_7;
221 __le64 rmac_ip_octets;
222 __le32 rmac_drop_ip;
223 __le32 rmac_hdr_err_ip;
224 __le32 reserved_8;
225 __le32 rmac_icmp;
226 __le64 rmac_tcp;
227 __le32 rmac_err_drp_udp;
228 __le32 rmac_udp;
229 __le64 rmac_xgmii_err_sym;
230 __le64 rmac_frms_q0;
231 __le64 rmac_frms_q1;
232 __le64 rmac_frms_q2;
233 __le64 rmac_frms_q3;
234 __le64 rmac_frms_q4;
235 __le64 rmac_frms_q5;
236 __le64 rmac_frms_q6;
237 __le64 rmac_frms_q7;
238 __le16 rmac_full_q3;
239 __le16 rmac_full_q2;
240 __le16 rmac_full_q1;
241 __le16 rmac_full_q0;
242 __le16 rmac_full_q7;
243 __le16 rmac_full_q6;
244 __le16 rmac_full_q5;
245 __le16 rmac_full_q4;
246 __le32 reserved_9;
247 __le32 rmac_pause_cnt;
248 __le64 rmac_xgmii_data_err_cnt;
249 __le64 rmac_xgmii_ctrl_err_cnt;
250 __le32 rmac_err_tcp;
251 __le32 rmac_accepted_ip;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252
253/* PCI/PCI-X Read transaction statistics. */
Al Viro107c3a72006-08-13 15:38:04 -0400254 __le32 new_rd_req_cnt;
255 __le32 rd_req_cnt;
256 __le32 rd_rtry_cnt;
257 __le32 new_rd_req_rtry_cnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258
259/* PCI/PCI-X Write/Read transaction statistics. */
Al Viro107c3a72006-08-13 15:38:04 -0400260 __le32 wr_req_cnt;
261 __le32 wr_rtry_rd_ack_cnt;
262 __le32 new_wr_req_rtry_cnt;
263 __le32 new_wr_req_cnt;
264 __le32 wr_disc_cnt;
265 __le32 wr_rtry_cnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266
267/* PCI/PCI-X Write / DMA Transaction statistics. */
Al Viro107c3a72006-08-13 15:38:04 -0400268 __le32 txp_wr_cnt;
269 __le32 rd_rtry_wr_ack_cnt;
270 __le32 txd_wr_cnt;
271 __le32 txd_rd_cnt;
272 __le32 rxd_wr_cnt;
273 __le32 rxd_rd_cnt;
274 __le32 rxf_wr_cnt;
275 __le32 txf_rd_cnt;
raghavendra.koushik@neterion.com7ba013a2005-08-03 12:29:20 -0700276
raghavendra.koushik@neterion.com541ae682005-08-03 12:36:55 -0700277/* Tx MAC statistics overflow counters. */
Al Viro107c3a72006-08-13 15:38:04 -0400278 __le32 tmac_data_octets_oflow;
279 __le32 tmac_frms_oflow;
280 __le32 tmac_bcst_frms_oflow;
281 __le32 tmac_mcst_frms_oflow;
282 __le32 tmac_ucst_frms_oflow;
283 __le32 tmac_ttl_octets_oflow;
284 __le32 tmac_any_err_frms_oflow;
285 __le32 tmac_nucst_frms_oflow;
286 __le64 tmac_vlan_frms;
287 __le32 tmac_drop_ip_oflow;
288 __le32 tmac_vld_ip_oflow;
289 __le32 tmac_rst_tcp_oflow;
290 __le32 tmac_icmp_oflow;
291 __le32 tpa_unknown_protocol;
292 __le32 tmac_udp_oflow;
293 __le32 reserved_10;
294 __le32 tpa_parse_failure;
raghavendra.koushik@neterion.com541ae682005-08-03 12:36:55 -0700295
296/* Rx MAC Statistics overflow counters. */
Al Viro107c3a72006-08-13 15:38:04 -0400297 __le32 rmac_data_octets_oflow;
298 __le32 rmac_vld_frms_oflow;
299 __le32 rmac_vld_bcst_frms_oflow;
300 __le32 rmac_vld_mcst_frms_oflow;
301 __le32 rmac_accepted_ucst_frms_oflow;
302 __le32 rmac_ttl_octets_oflow;
303 __le32 rmac_discarded_frms_oflow;
304 __le32 rmac_accepted_nucst_frms_oflow;
305 __le32 rmac_usized_frms_oflow;
306 __le32 rmac_drop_events_oflow;
307 __le32 rmac_frag_frms_oflow;
308 __le32 rmac_osized_frms_oflow;
309 __le32 rmac_ip_oflow;
310 __le32 rmac_jabber_frms_oflow;
311 __le32 rmac_icmp_oflow;
312 __le32 rmac_drop_ip_oflow;
313 __le32 rmac_err_drp_udp_oflow;
314 __le32 rmac_udp_oflow;
315 __le32 reserved_11;
316 __le32 rmac_pause_cnt_oflow;
317 __le64 rmac_ttl_1519_4095_frms;
318 __le64 rmac_ttl_4096_8191_frms;
319 __le64 rmac_ttl_8192_max_frms;
320 __le64 rmac_ttl_gt_max_frms;
321 __le64 rmac_osized_alt_frms;
322 __le64 rmac_jabber_alt_frms;
323 __le64 rmac_gt_max_alt_frms;
324 __le64 rmac_vlan_frms;
325 __le32 rmac_len_discard;
326 __le32 rmac_fcs_discard;
327 __le32 rmac_pf_discard;
328 __le32 rmac_da_discard;
329 __le32 rmac_red_discard;
330 __le32 rmac_rts_discard;
331 __le32 reserved_12;
332 __le32 rmac_ingm_full_discard;
333 __le32 reserved_13;
334 __le32 rmac_accepted_ip_oflow;
335 __le32 reserved_14;
336 __le32 link_fault_cnt;
Ananda Rajubd1034f2006-04-21 19:20:22 -0400337 u8 buffer[20];
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500338 struct swStat sw_stat;
339 struct xpakStat xpak_stat;
340};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341
Sivakumar Subramani926930b2007-02-24 01:59:39 -0500342/* Default value for 'vlan_strip_tag' configuration parameter */
343#define NO_STRIP_IN_PROMISC 2
344
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700345/*
346 * Structures representing different init time configuration
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 * parameters of the NIC.
348 */
349
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700350#define MAX_TX_FIFOS 8
351#define MAX_RX_RINGS 8
352
Sreenivasa Honnur6cfc4822008-02-20 17:07:51 -0500353#define FIFO_DEFAULT_NUM 5
354#define FIFO_UDP_MAX_NUM 2 /* 0 - even, 1 -odd ports */
355#define FIFO_OTHER_MAX_NUM 1
356
Surjit Reang2fda0962008-01-24 02:08:59 -0800357
Jon Mason1853e2e2010-12-10 15:40:01 +0000358#define MAX_RX_DESC_1 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 128)
359#define MAX_RX_DESC_2 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 86)
Sreenivasa Honnur0cec35e2007-05-10 04:06:28 -0400360#define MAX_TX_DESC (MAX_AVAILABLE_TXDS)
361
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700362/* FIFO mappings for all possible number of fifos configured */
Jon Masonc0dbf372010-12-10 15:40:02 +0000363static const int fifo_map[][MAX_TX_FIFOS] = {
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700364 {0, 0, 0, 0, 0, 0, 0, 0},
365 {0, 0, 0, 0, 1, 1, 1, 1},
366 {0, 0, 0, 1, 1, 1, 2, 2},
367 {0, 0, 1, 1, 2, 2, 3, 3},
368 {0, 0, 1, 1, 2, 2, 3, 4},
369 {0, 0, 1, 1, 2, 3, 4, 5},
370 {0, 0, 1, 2, 3, 4, 5, 6},
371 {0, 1, 2, 3, 4, 5, 6, 7},
372};
373
Jon Masonc0dbf372010-12-10 15:40:02 +0000374static const u16 fifo_selector[MAX_TX_FIFOS] = {0, 1, 3, 3, 7, 7, 7, 7};
Sreenivasa Honnur6cfc4822008-02-20 17:07:51 -0500375
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376/* Maintains Per FIFO related information. */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500377struct tx_fifo_config {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378#define MAX_AVAILABLE_TXDS 8192
379 u32 fifo_len; /* specifies len of FIFO upto 8192, ie no of TxDLs */
380/* Priority definition */
381#define TX_FIFO_PRI_0 0 /*Highest */
382#define TX_FIFO_PRI_1 1
383#define TX_FIFO_PRI_2 2
384#define TX_FIFO_PRI_3 3
385#define TX_FIFO_PRI_4 4
386#define TX_FIFO_PRI_5 5
387#define TX_FIFO_PRI_6 6
388#define TX_FIFO_PRI_7 7 /*lowest */
389 u8 fifo_priority; /* specifies pointer level for FIFO */
390 /* user should not set twos fifos with same pri */
391 u8 f_no_snoop;
392#define NO_SNOOP_TXD 0x01
393#define NO_SNOOP_TXD_BUFFER 0x02
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500394};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395
396
397/* Maintains per Ring related information */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500398struct rx_ring_config {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 u32 num_rxd; /*No of RxDs per Rx Ring */
400#define RX_RING_PRI_0 0 /* highest */
401#define RX_RING_PRI_1 1
402#define RX_RING_PRI_2 2
403#define RX_RING_PRI_3 3
404#define RX_RING_PRI_4 4
405#define RX_RING_PRI_5 5
406#define RX_RING_PRI_6 6
407#define RX_RING_PRI_7 7 /* lowest */
408
409 u8 ring_priority; /*Specifies service priority of ring */
410 /* OSM should not set any two rings with same priority */
411 u8 ring_org; /*Organization of ring */
412#define RING_ORG_BUFF1 0x01
413#define RX_RING_ORG_BUFF3 0x03
414#define RX_RING_ORG_BUFF5 0x05
415
416 u8 f_no_snoop;
417#define NO_SNOOP_RXD 0x01
418#define NO_SNOOP_RXD_BUFFER 0x02
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500419};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700421/* This structure provides contains values of the tunable parameters
422 * of the H/W
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 */
424struct config_param {
425/* Tx Side */
426 u32 tx_fifo_num; /*Number of Tx FIFOs */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427
Sreenivasa Honnur6cfc4822008-02-20 17:07:51 -0500428 /* 0-No steering, 1-Priority steering, 2-Default fifo map */
429#define NO_STEERING 0
430#define TX_PRIORITY_STEERING 0x1
431#define TX_DEFAULT_STEERING 0x2
432 u8 tx_steering_type;
433
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700434 u8 fifo_mapping[MAX_TX_FIFOS];
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500435 struct tx_fifo_config tx_cfg[MAX_TX_FIFOS]; /*Per-Tx FIFO config */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 u32 max_txds; /*Max no. of Tx buffer descriptor per TxDL */
437 u64 tx_intr_type;
Sivakumar Subramani8abc4d52007-09-15 13:11:34 -0700438#define INTA 0
439#define MSI_X 2
440 u8 intr_type;
Sivakumar Subramanic77dd432007-08-06 05:36:28 -0400441 u8 napi;
Sivakumar Subramani8abc4d52007-09-15 13:11:34 -0700442
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 /* Specifies if Tx Intr is UTILZ or PER_LIST type. */
444
445/* Rx Side */
446 u32 rx_ring_num; /*Number of receive rings */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447#define MAX_RX_BLOCKS_PER_RING 150
448
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500449 struct rx_ring_config rx_cfg[MAX_RX_RINGS]; /*Per-Rx Ring config */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450
451#define HEADER_ETHERNET_II_802_3_SIZE 14
452#define HEADER_802_2_SIZE 3
453#define HEADER_SNAP_SIZE 5
454#define HEADER_VLAN_SIZE 4
455
456#define MIN_MTU 46
457#define MAX_PYLD 1500
458#define MAX_MTU (MAX_PYLD+18)
459#define MAX_MTU_VLAN (MAX_PYLD+22)
460#define MAX_PYLD_JUMBO 9600
461#define MAX_MTU_JUMBO (MAX_PYLD_JUMBO+18)
462#define MAX_MTU_JUMBO_VLAN (MAX_PYLD_JUMBO+22)
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700463 u16 bus_speed;
Sreenivasa Honnurfaa4f792008-01-24 01:45:43 -0800464 int max_mc_addr; /* xena=64 herc=256 */
465 int max_mac_addr; /* xena=16 herc=64 */
466 int mc_start_offset; /* xena=16 herc=64 */
Sreenivasa Honnur3a3d5752008-02-20 16:44:07 -0500467 u8 multiq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468};
469
470/* Structure representing MAC Addrs */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500471struct mac_addr {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 u8 mac_addr[ETH_ALEN];
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500473};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474
475/* Structure that represent every FIFO element in the BAR1
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700476 * Address location.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500478struct TxFIFO_element {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 u64 TxDL_Pointer;
480
481 u64 List_Control;
482#define TX_FIFO_LAST_TXD_NUM( val) vBIT(val,0,8)
Jiri Slabyb7b5a122007-10-18 23:40:29 -0700483#define TX_FIFO_FIRST_LIST s2BIT(14)
484#define TX_FIFO_LAST_LIST s2BIT(15)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485#define TX_FIFO_FIRSTNLAST_LIST vBIT(3,14,2)
Jiri Slabyb7b5a122007-10-18 23:40:29 -0700486#define TX_FIFO_SPECIAL_FUNC s2BIT(23)
487#define TX_FIFO_DS_NO_SNOOP s2BIT(31)
488#define TX_FIFO_BUFF_NO_SNOOP s2BIT(30)
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500489};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490
491/* Tx descriptor structure */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500492struct TxD {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 u64 Control_1;
494/* bit mask */
Jiri Slabyb7b5a122007-10-18 23:40:29 -0700495#define TXD_LIST_OWN_XENA s2BIT(7)
496#define TXD_T_CODE (s2BIT(12)|s2BIT(13)|s2BIT(14)|s2BIT(15))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497#define TXD_T_CODE_OK(val) (|(val & TXD_T_CODE))
498#define GET_TXD_T_CODE(val) ((val & TXD_T_CODE)<<12)
Jiri Slabyb7b5a122007-10-18 23:40:29 -0700499#define TXD_GATHER_CODE (s2BIT(22) | s2BIT(23))
500#define TXD_GATHER_CODE_FIRST s2BIT(22)
501#define TXD_GATHER_CODE_LAST s2BIT(23)
502#define TXD_TCP_LSO_EN s2BIT(30)
503#define TXD_UDP_COF_EN s2BIT(31)
504#define TXD_UFO_EN s2BIT(31) | s2BIT(30)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505#define TXD_TCP_LSO_MSS(val) vBIT(val,34,14)
Ananda Rajufed5ecc2005-11-14 15:25:08 -0500506#define TXD_UFO_MSS(val) vBIT(val,34,14)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507#define TXD_BUFFER0_SIZE(val) vBIT(val,48,16)
508
509 u64 Control_2;
Jiri Slabyb7b5a122007-10-18 23:40:29 -0700510#define TXD_TX_CKO_CONTROL (s2BIT(5)|s2BIT(6)|s2BIT(7))
511#define TXD_TX_CKO_IPV4_EN s2BIT(5)
512#define TXD_TX_CKO_TCP_EN s2BIT(6)
513#define TXD_TX_CKO_UDP_EN s2BIT(7)
514#define TXD_VLAN_ENABLE s2BIT(15)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515#define TXD_VLAN_TAG(val) vBIT(val,16,16)
516#define TXD_INT_NUMBER(val) vBIT(val,34,6)
Jiri Slabyb7b5a122007-10-18 23:40:29 -0700517#define TXD_INT_TYPE_PER_LIST s2BIT(47)
518#define TXD_INT_TYPE_UTILZ s2BIT(46)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519#define TXD_SET_MARKER vBIT(0x6,0,4)
520
521 u64 Buffer_Pointer;
522 u64 Host_Control; /* reserved for host */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500523};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524
525/* Structure to hold the phy and virt addr of every TxDL. */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500526struct list_info_hold {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 dma_addr_t list_phy_addr;
528 void *list_virt_addr;
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500529};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530
Ananda Rajuda6971d2005-10-31 16:55:31 -0500531/* Rx descriptor structure for 1 buffer mode */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500532struct RxD_t {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533 u64 Host_Control; /* reserved for host */
534 u64 Control_1;
Jiri Slabyb7b5a122007-10-18 23:40:29 -0700535#define RXD_OWN_XENA s2BIT(7)
536#define RXD_T_CODE (s2BIT(12)|s2BIT(13)|s2BIT(14)|s2BIT(15))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537#define RXD_FRAME_PROTO vBIT(0xFFFF,24,8)
Sreenivasa Honnurcdb5bf02008-02-20 17:09:15 -0500538#define RXD_FRAME_VLAN_TAG s2BIT(24)
Jiri Slabyb7b5a122007-10-18 23:40:29 -0700539#define RXD_FRAME_PROTO_IPV4 s2BIT(27)
540#define RXD_FRAME_PROTO_IPV6 s2BIT(28)
541#define RXD_FRAME_IP_FRAG s2BIT(29)
542#define RXD_FRAME_PROTO_TCP s2BIT(30)
543#define RXD_FRAME_PROTO_UDP s2BIT(31)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544#define TCP_OR_UDP_FRAME (RXD_FRAME_PROTO_TCP | RXD_FRAME_PROTO_UDP)
545#define RXD_GET_L3_CKSUM(val) ((u16)(val>> 16) & 0xFFFF)
546#define RXD_GET_L4_CKSUM(val) ((u16)(val) & 0xFFFF)
547
548 u64 Control_2;
raghavendra.koushik@neterion.com5e25b9d2005-08-03 12:27:09 -0700549#define THE_RXD_MARK 0x3
550#define SET_RXD_MARKER vBIT(THE_RXD_MARK, 0, 2)
551#define GET_RXD_MARKER(ctrl) ((ctrl & SET_RXD_MARKER) >> 62)
552
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553#define MASK_VLAN_TAG vBIT(0xFFFF,48,16)
554#define SET_VLAN_TAG(val) vBIT(val,48,16)
555#define SET_NUM_TAG(val) vBIT(val,16,32)
556
Ananda Rajuda6971d2005-10-31 16:55:31 -0500557
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500558};
Ananda Rajuda6971d2005-10-31 16:55:31 -0500559/* Rx descriptor structure for 1 buffer mode */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500560struct RxD1 {
561 struct RxD_t h;
Ananda Rajuda6971d2005-10-31 16:55:31 -0500562
563#define MASK_BUFFER0_SIZE_1 vBIT(0x3FFF,2,14)
564#define SET_BUFFER0_SIZE_1(val) vBIT(val,2,14)
565#define RXD_GET_BUFFER0_SIZE_1(_Control_2) \
566 (u16)((_Control_2 & MASK_BUFFER0_SIZE_1) >> 48)
567 u64 Buffer0_ptr;
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500568};
Ananda Rajuda6971d2005-10-31 16:55:31 -0500569/* Rx descriptor structure for 3 or 2 buffer mode */
570
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500571struct RxD3 {
572 struct RxD_t h;
Ananda Rajuda6971d2005-10-31 16:55:31 -0500573
574#define MASK_BUFFER0_SIZE_3 vBIT(0xFF,2,14)
575#define MASK_BUFFER1_SIZE_3 vBIT(0xFFFF,16,16)
576#define MASK_BUFFER2_SIZE_3 vBIT(0xFFFF,32,16)
577#define SET_BUFFER0_SIZE_3(val) vBIT(val,8,8)
578#define SET_BUFFER1_SIZE_3(val) vBIT(val,16,16)
579#define SET_BUFFER2_SIZE_3(val) vBIT(val,32,16)
580#define RXD_GET_BUFFER0_SIZE_3(Control_2) \
581 (u8)((Control_2 & MASK_BUFFER0_SIZE_3) >> 48)
582#define RXD_GET_BUFFER1_SIZE_3(Control_2) \
583 (u16)((Control_2 & MASK_BUFFER1_SIZE_3) >> 32)
584#define RXD_GET_BUFFER2_SIZE_3(Control_2) \
585 (u16)((Control_2 & MASK_BUFFER2_SIZE_3) >> 16)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586#define BUF0_LEN 40
587#define BUF1_LEN 1
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588
589 u64 Buffer0_ptr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590 u64 Buffer1_ptr;
591 u64 Buffer2_ptr;
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500592};
Ananda Rajuda6971d2005-10-31 16:55:31 -0500593
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700595/* Structure that represents the Rx descriptor block which contains
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 * 128 Rx descriptors.
597 */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500598struct RxD_block {
Ananda Rajuda6971d2005-10-31 16:55:31 -0500599#define MAX_RXDS_PER_BLOCK_1 127
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500600 struct RxD1 rxd[MAX_RXDS_PER_BLOCK_1];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601
602 u64 reserved_0;
603#define END_OF_BLOCK 0xFEFFFFFFFFFFFFFFULL
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700604 u64 reserved_1; /* 0xFEFFFFFFFFFFFFFF to mark last
Linus Torvalds1da177e2005-04-16 15:20:36 -0700605 * Rxd in this blk */
606 u64 reserved_2_pNext_RxD_block; /* Logical ptr to next */
607 u64 pNext_RxD_Blk_physical; /* Buff0_ptr.In a 32 bit arch
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700608 * the upper 32 bits should
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609 * be 0 */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500610};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612#define SIZE_OF_BLOCK 4096
613
Sivakumar Subramani19a60522007-01-31 13:30:49 -0500614#define RXD_MODE_1 0 /* One Buffer mode */
Veena Parat6d517a22007-07-23 02:20:51 -0400615#define RXD_MODE_3B 1 /* Two Buffer mode */
Ananda Rajuda6971d2005-10-31 16:55:31 -0500616
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700617/* Structure to hold virtual addresses of Buf0 and Buf1 in
Linus Torvalds1da177e2005-04-16 15:20:36 -0700618 * 2buf mode. */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500619struct buffAdd {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620 void *ba_0_org;
621 void *ba_1_org;
622 void *ba_0;
623 void *ba_1;
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500624};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625
626/* Structure which stores all the MAC control parameters */
627
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700628/* This structure stores the offset of the RxD in the ring
629 * from which the Rx Interrupt processor can start picking
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630 * up the RxDs for processing.
631 */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500632struct rx_curr_get_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633 u32 block_index;
634 u32 offset;
635 u32 ring_len;
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500636};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700637
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500638struct rx_curr_put_info {
639 u32 block_index;
640 u32 offset;
641 u32 ring_len;
642};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643
644/* This structure stores the offset of the TxDl in the FIFO
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700645 * from which the Tx Interrupt processor can start picking
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646 * up the TxDLs for send complete interrupt processing.
647 */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500648struct tx_curr_get_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649 u32 offset;
650 u32 fifo_len;
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500651};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500653struct tx_curr_put_info {
654 u32 offset;
655 u32 fifo_len;
656};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500658struct rxd_info {
Ananda Rajuda6971d2005-10-31 16:55:31 -0500659 void *virt_addr;
660 dma_addr_t dma_addr;
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500661};
Ananda Rajuda6971d2005-10-31 16:55:31 -0500662
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700663/* Structure that holds the Phy and virt addresses of the Blocks */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500664struct rx_block_info {
Ananda Rajuda6971d2005-10-31 16:55:31 -0500665 void *block_virt_addr;
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700666 dma_addr_t block_dma_addr;
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500667 struct rxd_info *rxds;
668};
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700669
Sreenivasa Honnur0425b462008-04-28 21:08:45 -0400670/* Data structure to represent a LRO session */
671struct lro {
672 struct sk_buff *parent;
673 struct sk_buff *last_frag;
674 u8 *l2h;
675 struct iphdr *iph;
676 struct tcphdr *tcph;
677 u32 tcp_next_seq;
678 __be32 tcp_ack;
679 int total_len;
680 int frags_len;
681 int sg_num;
682 int in_use;
683 __be16 window;
684 u16 vlan_tag;
685 u32 cur_tsval;
686 __be32 cur_tsecr;
687 u8 saw_ts;
688} ____cacheline_aligned;
689
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700690/* Ring specific structure */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500691struct ring_info {
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700692 /* The ring number */
693 int ring_no;
694
Sreenivasa Honnur0425b462008-04-28 21:08:45 -0400695 /* per-ring buffer counter */
696 u32 rx_bufs_left;
697
Sreenivasa Honnurf61e0a32008-05-12 13:42:17 -0400698#define MAX_LRO_SESSIONS 32
Sreenivasa Honnur0425b462008-04-28 21:08:45 -0400699 struct lro lro0_n[MAX_LRO_SESSIONS];
700 u8 lro;
701
702 /* copy of sp->rxd_mode flag */
703 int rxd_mode;
704
705 /* Number of rxds per block for the rxd_mode */
706 int rxd_count;
707
708 /* copy of sp pointer */
709 struct s2io_nic *nic;
710
711 /* copy of sp->dev pointer */
712 struct net_device *dev;
713
714 /* copy of sp->pdev pointer */
715 struct pci_dev *pdev;
716
Sreenivasa Honnurf61e0a32008-05-12 13:42:17 -0400717 /* Per ring napi struct */
718 struct napi_struct napi;
719
720 unsigned long interrupt_count;
721
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700722 /*
723 * Place holders for the virtual and physical addresses of
724 * all the Rx Blocks
725 */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500726 struct rx_block_info rx_blocks[MAX_RX_BLOCKS_PER_RING];
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700727 int block_count;
728 int pkt_cnt;
729
730 /*
731 * Put pointer info which indictes which RxD has to be replenished
732 * with a new buffer.
733 */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500734 struct rx_curr_put_info rx_curr_put_info;
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700735
736 /*
737 * Get pointer info which indictes which is the last RxD that was
738 * processed by the driver.
739 */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500740 struct rx_curr_get_info rx_curr_get_info;
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700741
Sreenivasa Honnur0425b462008-04-28 21:08:45 -0400742 /* interface MTU value */
743 unsigned mtu;
Jeff Garzik7d2e3cb2008-05-13 01:41:58 -0400744
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700745 /* Buffer Address store. */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500746 struct buffAdd **ba;
Sreenivasa Honnur0425b462008-04-28 21:08:45 -0400747} ____cacheline_aligned;
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700748
749/* Fifo specific structure */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500750struct fifo_info {
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700751 /* FIFO number */
752 int fifo_no;
753
754 /* Maximum TxDs per TxDL */
755 int max_txds;
756
757 /* Place holder of all the TX List's Phy and Virt addresses. */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500758 struct list_info_hold *list_info;
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700759
760 /*
761 * Current offset within the tx FIFO where driver would write
762 * new Tx frame
763 */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500764 struct tx_curr_put_info tx_curr_put_info;
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700765
766 /*
767 * Current offset within tx FIFO from where the driver would start freeing
768 * the buffers
769 */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500770 struct tx_curr_get_info tx_curr_get_info;
Sreenivasa Honnur3a3d5752008-02-20 16:44:07 -0500771#define FIFO_QUEUE_START 0
772#define FIFO_QUEUE_STOP 1
773 int queue_state;
774
775 /* copy of sp->dev pointer */
776 struct net_device *dev;
777
778 /* copy of multiq status */
779 u8 multiq;
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700780
Surjit Reang2fda0962008-01-24 02:08:59 -0800781 /* Per fifo lock */
782 spinlock_t tx_lock;
783
784 /* Per fifo UFO in band structure */
785 u64 *ufo_in_band_v;
786
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500787 struct s2io_nic *nic;
Surjit Reang2fda0962008-01-24 02:08:59 -0800788} ____cacheline_aligned;
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700789
Adrian Bunk47bdd712006-06-30 18:25:18 +0200790/* Information related to the Tx and Rx FIFOs and Rings of Xena
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791 * is maintained in this structure.
792 */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500793struct mac_info {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794/* tx side stuff */
795 /* logical pointer of start of each Tx FIFO */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500796 struct TxFIFO_element __iomem *tx_FIFO_start[MAX_TX_FIFOS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700798 /* Fifo specific structure */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500799 struct fifo_info fifos[MAX_TX_FIFOS];
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700800
ravinandan.arakali@neterion.com776bd202005-09-06 21:36:56 -0700801 /* Save virtual address of TxD page with zero DMA addr(if any) */
802 void *zerodma_virt_addr;
803
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700804/* rx side stuff */
805 /* Ring specific structure */
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500806 struct ring_info rings[MAX_RX_RINGS];
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700807
808 u16 rmac_pause_time;
809 u16 mc_pause_threshold_q0q3;
810 u16 mc_pause_threshold_q4q7;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811
812 void *stats_mem; /* orignal pointer to allocated mem */
813 dma_addr_t stats_mem_phy; /* Physical address of the stat block */
814 u32 stats_mem_sz;
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500815 struct stat_block *stats_info; /* Logical address of the stat block */
816};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818/* Default Tunable parameters of the NIC. */
Ananda Raju9dc737a2006-04-21 19:05:41 -0400819#define DEFAULT_FIFO_0_LEN 4096
820#define DEFAULT_FIFO_1_7_LEN 512
Ananda Rajuc92ca042006-04-21 19:18:03 -0400821#define SMALL_BLK_CNT 30
822#define LARGE_BLK_CNT 100
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823
Ravinandan Arakalicc6e7c42005-10-04 06:41:24 -0400824/*
825 * Structure to keep track of the MSI-X vectors and the corresponding
826 * argument registered against each vector
827 */
Sreenivasa Honnurf61e0a32008-05-12 13:42:17 -0400828#define MAX_REQUESTED_MSI_X 9
Ravinandan Arakalicc6e7c42005-10-04 06:41:24 -0400829struct s2io_msix_entry
830{
831 u16 vector;
832 u16 entry;
833 void *arg;
834
835 u8 type;
Sreenivasa Honnurac731ab2008-05-12 13:41:32 -0400836#define MSIX_ALARM_TYPE 1
837#define MSIX_RING_TYPE 2
Ravinandan Arakalicc6e7c42005-10-04 06:41:24 -0400838
839 u8 in_use;
840#define MSIX_REGISTERED_SUCCESS 0xAA
841};
842
843struct msix_info_st {
844 u64 addr;
845 u64 data;
846};
847
Sivakumar Subramani92b84432007-09-06 06:51:14 -0400848/* These flags represent the devices temporary state */
849enum s2io_device_state_t
850{
851 __S2IO_STATE_LINK_TASK=0,
852 __S2IO_STATE_CARD_UP
853};
854
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855/* Structure representing one instance of the NIC */
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700856struct s2io_nic {
Ananda Rajuda6971d2005-10-31 16:55:31 -0500857 int rxd_mode;
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700858 /*
859 * Count of packets to be processed in a given iteration, it will be indicated
860 * by the quota field of the device structure when NAPI is enabled.
861 */
862 int pkts_to_process;
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700863 struct net_device *dev;
Ralf Baechle1ee6dd72007-01-31 14:09:29 -0500864 struct mac_info mac_control;
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700865 struct config_param config;
866 struct pci_dev *pdev;
867 void __iomem *bar0;
868 void __iomem *bar1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869#define MAX_MAC_SUPPORTED 16
870#define MAX_SUPPORTED_MULTICASTS MAX_MAC_SUPPORTED
871
Sreenivasa Honnurfaa4f792008-01-24 01:45:43 -0800872 struct mac_addr def_mac_addr[256];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700873
874 struct net_device_stats stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875 int high_dma_flag;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876 int device_enabled_once;
877
Ananda Rajuc92ca042006-04-21 19:18:03 -0400878 char name[60];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879
raghavendra.koushik@neterion.com25fff882005-08-03 12:34:11 -0700880 /* Timer that handles I/O errors/exceptions */
881 struct timer_list alarm_timer;
882
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700883 /* Space to back up the PCI config space */
884 u32 config_space[256 / sizeof(u32)];
885
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886#define PROMISC 1
887#define ALL_MULTI 2
888
889#define MAX_ADDRS_SUPPORTED 64
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890 u16 mc_addr_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891
892 u16 m_cast_flg;
893 u16 all_multi_pos;
894 u16 promisc_flg;
895
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896 /* Id timer, used to blink NIC to physically identify NIC. */
897 struct timer_list id_timer;
898
899 /* Restart timer, used to restart NIC if the device is stuck and
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700900 * a schedule task that will set the correct Link state once the
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901 * NIC's PHY has stabilized after a state change.
902 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903 struct work_struct rst_timer_task;
904 struct work_struct set_link_task;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700905
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700906 /* Flag that can be used to turn on or turn off the Rx checksum
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907 * offload feature.
908 */
909 int rx_csum;
910
Sreenivasa Honnur6cfc4822008-02-20 17:07:51 -0500911 /* Below variables are used for fifo selection to transmit a packet */
912 u16 fifo_selector[MAX_TX_FIFOS];
913
914 /* Total fifos for tcp packets */
915 u8 total_tcp_fifos;
916
917 /*
918 * Beginning index of udp for udp packets
919 * Value will be equal to
920 * (tx_fifo_num - FIFO_UDP_MAX_NUM - FIFO_OTHER_MAX_NUM)
921 */
922 u8 udp_fifo_idx;
923
924 u8 total_udp_fifos;
925
926 /*
927 * Beginning index of fifo for all other packets
928 * Value will be equal to (tx_fifo_num - FIFO_OTHER_MAX_NUM)
929 */
930 u8 other_fifo_idx;
931
Sreenivasa Honnurf61e0a32008-05-12 13:42:17 -0400932 struct napi_struct napi;
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700933 /* after blink, the adapter must be restored with original
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934 * values.
935 */
936 u64 adapt_ctrl_org;
937
938 /* Last known link state. */
939 u16 last_link_state;
940#define LINK_DOWN 1
941#define LINK_UP 2
942
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 int task_flag;
Sreenivasa Honnur491976b2007-05-10 04:22:25 -0400944 unsigned long long start_time;
raghavendra.koushik@neterion.combe3a6b02005-08-03 12:35:55 -0700945 struct vlan_group *vlgrp;
Breno Leitaocd0fce02008-09-04 17:52:54 -0300946 int vlan_strip_flag;
Ravinandan Arakalicc6e7c42005-10-04 06:41:24 -0400947#define MSIX_FLG 0xA5
Sreenivasa Honnurf61e0a32008-05-12 13:42:17 -0400948 int num_entries;
Ravinandan Arakalicc6e7c42005-10-04 06:41:24 -0400949 struct msix_entry *entries;
Sivakumar Subramani8abc4d52007-09-15 13:11:34 -0700950 int msi_detected;
951 wait_queue_head_t msi_wait;
Ravinandan Arakalicc6e7c42005-10-04 06:41:24 -0400952 struct s2io_msix_entry *s2io_entries;
Ananda Rajue6a8fee2006-07-06 23:58:23 -0700953 char desc[MAX_REQUESTED_MSI_X][25];
Ravinandan Arakalicc6e7c42005-10-04 06:41:24 -0400954
Ananda Rajuc92ca042006-04-21 19:18:03 -0400955 int avail_msix_vectors; /* No. of MSI-X vectors granted by system */
956
Ravinandan Arakalicc6e7c42005-10-04 06:41:24 -0400957 struct msix_info_st msix_info[0x3f];
958
raghavendra.koushik@neterion.com541ae682005-08-03 12:36:55 -0700959#define XFRAME_I_DEVICE 1
960#define XFRAME_II_DEVICE 2
961 u8 device_type;
raghavendra.koushik@neterion.combe3a6b02005-08-03 12:35:55 -0700962
Ravinandan Arakali7d3d04392006-01-25 14:53:07 -0500963 unsigned long clubbed_frms_cnt;
964 unsigned long sending_both;
Ravinandan Arakali7d3d04392006-01-25 14:53:07 -0500965 u16 lro_max_aggr_per_sess;
Sivakumar Subramani92b84432007-09-06 06:51:14 -0400966 volatile unsigned long state;
Sivakumar Subramani9caab452007-09-06 06:21:54 -0400967 u64 general_int_mask;
Sreenivasa Honnurac731ab2008-05-12 13:41:32 -0400968
Sivakumar Subramani19a60522007-01-31 13:30:49 -0500969#define VPD_STRING_LEN 80
970 u8 product_name[VPD_STRING_LEN];
971 u8 serial_num[VPD_STRING_LEN];
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700972};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973
974#define RESET_ERROR 1;
975#define CMD_ERROR 2;
976
977/* OS related system calls */
978#ifndef readq
979static inline u64 readq(void __iomem *addr)
980{
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -0700981 u64 ret = 0;
982 ret = readl(addr + 4);
Andrew Morton7ef24b62005-08-25 17:14:46 -0700983 ret <<= 32;
984 ret |= readl(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985
986 return ret;
987}
988#endif
989
990#ifndef writeq
991static inline void writeq(u64 val, void __iomem *addr)
992{
993 writel((u32) (val), addr);
994 writel((u32) (val >> 32), (addr + 4));
995}
Ananda Rajuc92ca042006-04-21 19:18:03 -0400996#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997
Jeff Garzik6aa20a22006-09-13 13:24:59 -0400998/*
999 * Some registers have to be written in a particular order to
1000 * expect correct hardware operation. The macro SPECIAL_REG_WRITE
1001 * is used to perform such ordered writes. Defines UF (Upper First)
Ananda Rajuc92ca042006-04-21 19:18:03 -04001002 * and LF (Lower First) will be used to specify the required write order.
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003 */
1004#define UF 1
1005#define LF 2
1006static inline void SPECIAL_REG_WRITE(u64 val, void __iomem *addr, int order)
1007{
Ananda Rajuc92ca042006-04-21 19:18:03 -04001008 u32 ret;
1009
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010 if (order == LF) {
1011 writel((u32) (val), addr);
Ananda Rajuc92ca042006-04-21 19:18:03 -04001012 ret = readl(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013 writel((u32) (val >> 32), (addr + 4));
Ananda Rajuc92ca042006-04-21 19:18:03 -04001014 ret = readl(addr + 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001015 } else {
1016 writel((u32) (val >> 32), (addr + 4));
Ananda Rajuc92ca042006-04-21 19:18:03 -04001017 ret = readl(addr + 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018 writel((u32) (val), addr);
Ananda Rajuc92ca042006-04-21 19:18:03 -04001019 ret = readl(addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020 }
1021}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022
1023/* Interrupt related values of Xena */
1024
1025#define ENABLE_INTRS 1
1026#define DISABLE_INTRS 2
1027
1028/* Highest level interrupt blocks */
1029#define TX_PIC_INTR (0x0001<<0)
1030#define TX_DMA_INTR (0x0001<<1)
1031#define TX_MAC_INTR (0x0001<<2)
1032#define TX_XGXS_INTR (0x0001<<3)
1033#define TX_TRAFFIC_INTR (0x0001<<4)
1034#define RX_PIC_INTR (0x0001<<5)
1035#define RX_DMA_INTR (0x0001<<6)
1036#define RX_MAC_INTR (0x0001<<7)
1037#define RX_XGXS_INTR (0x0001<<8)
1038#define RX_TRAFFIC_INTR (0x0001<<9)
1039#define MC_INTR (0x0001<<10)
1040#define ENA_ALL_INTRS ( TX_PIC_INTR | \
1041 TX_DMA_INTR | \
1042 TX_MAC_INTR | \
1043 TX_XGXS_INTR | \
1044 TX_TRAFFIC_INTR | \
1045 RX_PIC_INTR | \
1046 RX_DMA_INTR | \
1047 RX_MAC_INTR | \
1048 RX_XGXS_INTR | \
1049 RX_TRAFFIC_INTR | \
1050 MC_INTR )
1051
1052/* Interrupt masks for the general interrupt mask register */
1053#define DISABLE_ALL_INTRS 0xFFFFFFFFFFFFFFFFULL
1054
Jiri Slabyb7b5a122007-10-18 23:40:29 -07001055#define TXPIC_INT_M s2BIT(0)
1056#define TXDMA_INT_M s2BIT(1)
1057#define TXMAC_INT_M s2BIT(2)
1058#define TXXGXS_INT_M s2BIT(3)
1059#define TXTRAFFIC_INT_M s2BIT(8)
1060#define PIC_RX_INT_M s2BIT(32)
1061#define RXDMA_INT_M s2BIT(33)
1062#define RXMAC_INT_M s2BIT(34)
1063#define MC_INT_M s2BIT(35)
1064#define RXXGXS_INT_M s2BIT(36)
1065#define RXTRAFFIC_INT_M s2BIT(40)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066
1067/* PIC level Interrupts TODO*/
1068
1069/* DMA level Inressupts */
Jiri Slabyb7b5a122007-10-18 23:40:29 -07001070#define TXDMA_PFC_INT_M s2BIT(0)
1071#define TXDMA_PCC_INT_M s2BIT(2)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001072
1073/* PFC block interrupts */
Jiri Slabyb7b5a122007-10-18 23:40:29 -07001074#define PFC_MISC_ERR_1 s2BIT(0) /* Interrupt to indicate FIFO full */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001075
1076/* PCC block interrupts. */
1077#define PCC_FB_ECC_ERR vBIT(0xff, 16, 8) /* Interrupt to indicate
1078 PCC_FB_ECC Error. */
1079
raghavendra.koushik@neterion.com20346722005-08-03 12:24:33 -07001080#define RXD_GET_VLAN_TAG(Control_2) (u16)(Control_2 & MASK_VLAN_TAG)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001081/*
1082 * Prototype declaration.
1083 */
1084static int __devinit s2io_init_nic(struct pci_dev *pdev,
1085 const struct pci_device_id *pre);
1086static void __devexit s2io_rem_nic(struct pci_dev *pdev);
1087static int init_shared_mem(struct s2io_nic *sp);
1088static void free_shared_mem(struct s2io_nic *sp);
1089static int init_nic(struct s2io_nic *nic);
Sreenivasa Honnurf61e0a32008-05-12 13:42:17 -04001090static int rx_intr_handler(struct ring_info *ring_data, int budget);
Sreenivasa Honnur01e16fa2008-07-09 23:49:21 -04001091static void s2io_txpic_intr_handle(struct s2io_nic *sp);
Ralf Baechle1ee6dd72007-01-31 14:09:29 -05001092static void tx_intr_handler(struct fifo_info *fifo_data);
Sivakumar Subramani8116f3c2007-09-17 13:05:35 -07001093static void s2io_handle_errors(void * dev_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001094
1095static int s2io_starter(void);
Sivakumar Subramani19a60522007-01-31 13:30:49 -05001096static void s2io_closer(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097static void s2io_tx_watchdog(struct net_device *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098static void s2io_set_multicast(struct net_device *dev);
Ralf Baechle1ee6dd72007-01-31 14:09:29 -05001099static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp);
1100static void s2io_link(struct s2io_nic * sp, int link);
1101static void s2io_reset(struct s2io_nic * sp);
Sreenivasa Honnurf61e0a32008-05-12 13:42:17 -04001102static int s2io_poll_msix(struct napi_struct *napi, int budget);
1103static int s2io_poll_inta(struct napi_struct *napi, int budget);
Ralf Baechle1ee6dd72007-01-31 14:09:29 -05001104static void s2io_init_pci(struct s2io_nic * sp);
Sivakumar Subramani2fd37682007-09-14 07:39:19 -04001105static int do_s2io_prog_unicast(struct net_device *dev, u8 *addr);
raghavendra.koushik@neterion.com25fff882005-08-03 12:34:11 -07001106static void s2io_alarm_handle(unsigned long data);
Ravinandan Arakalicc6e7c42005-10-04 06:41:24 -04001107static irqreturn_t
David Howells7d12e782006-10-05 14:55:46 +01001108s2io_msix_ring_handle(int irq, void *dev_id);
Ravinandan Arakalicc6e7c42005-10-04 06:41:24 -04001109static irqreturn_t
David Howells7d12e782006-10-05 14:55:46 +01001110s2io_msix_fifo_handle(int irq, void *dev_id);
1111static irqreturn_t s2io_isr(int irq, void *dev_id);
Ralf Baechle1ee6dd72007-01-31 14:09:29 -05001112static int verify_xena_quiescence(struct s2io_nic *sp);
Jeff Garzik7282d492006-09-13 14:30:00 -04001113static const struct ethtool_ops netdev_ethtool_ops;
David Howellsc4028952006-11-22 14:57:56 +00001114static void s2io_set_link(struct work_struct *work);
Ralf Baechle1ee6dd72007-01-31 14:09:29 -05001115static int s2io_set_swapper(struct s2io_nic * sp);
1116static void s2io_card_down(struct s2io_nic *nic);
1117static int s2io_card_up(struct s2io_nic *nic);
Sivakumar Subramani9fc93a42007-02-24 01:57:32 -05001118static int wait_for_cmd_complete(void __iomem *addr, u64 busy_bit,
1119 int bit_state);
Ralf Baechle1ee6dd72007-01-31 14:09:29 -05001120static int s2io_add_isr(struct s2io_nic * sp);
1121static void s2io_rem_isr(struct s2io_nic * sp);
Sivakumar Subramani19a60522007-01-31 13:30:49 -05001122
Ralf Baechle1ee6dd72007-01-31 14:09:29 -05001123static void restore_xmsi_data(struct s2io_nic *nic);
Sreenivasa Honnurfaa4f792008-01-24 01:45:43 -08001124static void do_s2io_store_unicast_mc(struct s2io_nic *sp);
1125static void do_s2io_restore_unicast_mc(struct s2io_nic *sp);
1126static u64 do_s2io_read_unicast_mc(struct s2io_nic *sp, int offset);
1127static int do_s2io_add_mc(struct s2io_nic *sp, u8 *addr);
1128static int do_s2io_add_mac(struct s2io_nic *sp, u64 addr, int offset);
1129static int do_s2io_delete_unicast_mc(struct s2io_nic *sp, u64 addr);
Ravinandan Arakali7d3d04392006-01-25 14:53:07 -05001130
Sreenivasa Honnur0425b462008-04-28 21:08:45 -04001131static int s2io_club_tcp_session(struct ring_info *ring_data, u8 *buffer,
1132 u8 **tcp, u32 *tcp_len, struct lro **lro, struct RxD_t *rxdp,
1133 struct s2io_nic *sp);
Ralf Baechle1ee6dd72007-01-31 14:09:29 -05001134static void clear_lro_session(struct lro *lro);
Sreenivasa Honnurcdb5bf02008-02-20 17:09:15 -05001135static void queue_rx_frame(struct sk_buff *skb, u16 vlan_tag);
Ralf Baechle1ee6dd72007-01-31 14:09:29 -05001136static void update_L3L4_header(struct s2io_nic *sp, struct lro *lro);
1137static void lro_append_pkt(struct s2io_nic *sp, struct lro *lro,
1138 struct sk_buff *skb, u32 tcp_len);
Sivakumar Subramani9fc93a42007-02-24 01:57:32 -05001139static int rts_ds_steer(struct s2io_nic *nic, u8 ds_codepoint, u8 ring);
Ananda Rajub41477f2006-07-24 19:52:49 -04001140
Linas Vepstasd796fdb2007-05-14 18:37:30 -05001141static pci_ers_result_t s2io_io_error_detected(struct pci_dev *pdev,
1142 pci_channel_state_t state);
1143static pci_ers_result_t s2io_io_slot_reset(struct pci_dev *pdev);
1144static void s2io_io_resume(struct pci_dev *pdev);
1145
Ananda Raju75c30b12006-07-24 19:55:09 -04001146#define s2io_tcp_mss(skb) skb_shinfo(skb)->gso_size
1147#define s2io_udp_mss(skb) skb_shinfo(skb)->gso_size
1148#define s2io_offload_type(skb) skb_shinfo(skb)->gso_type
1149
Ananda Rajub41477f2006-07-24 19:52:49 -04001150#define S2IO_PARM_INT(X, def_val) \
1151 static unsigned int X = def_val;\
1152 module_param(X , uint, 0);
1153
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154#endif /* _S2IO_H */