tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/************************************************************************
2 * s2io.h: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC
3 * Copyright(c) 2002-2007 Neterion Inc.
4
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
17#define s2BIT(loc) (0x8000000000000000ULL >> (loc))
18#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
21#ifndef BOOL
22#define BOOL int
23#endif
24
25#ifndef TRUE
26#define TRUE 1
27#define FALSE 0
28#endif
29
30#undef SUCCESS
31#define SUCCESS 0
32#define FAILURE -1
33#define S2IO_MINUS_ONE 0xFFFFFFFFFFFFFFFFULL
34#define S2IO_DISABLE_MAC_ENTRY 0xFFFFFFFFFFFFULL
35#define S2IO_MAX_PCI_CONFIG_SPACE_REINIT 100
36#define S2IO_BIT_RESET 1
37#define S2IO_BIT_SET 2
38#define CHECKBIT(value, nbit) (value & (1 << nbit))
39
40/* Maximum time to flicker LED when asked to identify NIC using ethtool */
41#define MAX_FLICKER_TIME 60000 /* 60 Secs */
42
43/* Maximum outstanding splits to be configured into xena. */
44enum {
45 XENA_ONE_SPLIT_TRANSACTION = 0,
46 XENA_TWO_SPLIT_TRANSACTION = 1,
47 XENA_THREE_SPLIT_TRANSACTION = 2,
48 XENA_FOUR_SPLIT_TRANSACTION = 3,
49 XENA_EIGHT_SPLIT_TRANSACTION = 4,
50 XENA_TWELVE_SPLIT_TRANSACTION = 5,
51 XENA_SIXTEEN_SPLIT_TRANSACTION = 6,
52 XENA_THIRTYTWO_SPLIT_TRANSACTION = 7
53};
54#define XENA_MAX_OUTSTANDING_SPLITS(n) (n << 4)
55
56/* OS concerned variables and constants */
57#define WATCH_DOG_TIMEOUT 15*HZ
58#define EFILL 0x1234
59#define ALIGN_SIZE 127
60#define PCIX_COMMAND_REGISTER 0x62
61
62/*
63 * Debug related variables.
64 */
65/* different debug levels. */
66#define ERR_DBG 0
67#define INIT_DBG 1
68#define INFO_DBG 2
69#define TX_DBG 3
70#define INTR_DBG 4
71
72/* Global variable that defines the present debug level of the driver. */
73static int debug_level = ERR_DBG;
74
75/* DEBUG message print. */
76#define DBG_PRINT(dbg_level, args...) if(!(debug_level<dbg_level)) printk(args)
77
78/* Protocol assist features of the NIC */
79#define L3_CKSUM_OK 0xFFFF
80#define L4_CKSUM_OK 0xFFFF
81#define S2IO_JUMBO_SIZE 9600
82
83/* Driver statistics maintained by driver */
84struct swStat {
85 unsigned long long single_ecc_errs;
86 unsigned long long double_ecc_errs;
87 unsigned long long parity_err_cnt;
88 unsigned long long serious_err_cnt;
89 unsigned long long soft_reset_cnt;
90 unsigned long long fifo_full_cnt;
91 unsigned long long ring_full_cnt[8];
92 /* LRO statistics */
93 unsigned long long clubbed_frms_cnt;
94 unsigned long long sending_both;
95 unsigned long long outof_sequence_pkts;
96 unsigned long long flush_max_pkts;
97 unsigned long long sum_avg_pkts_aggregated;
98 unsigned long long num_aggregations;
99 /* Other statistics */
100 unsigned long long mem_alloc_fail_cnt;
101 unsigned long long pci_map_fail_cnt;
102 unsigned long long watchdog_timer_cnt;
103 unsigned long long mem_allocated;
104 unsigned long long mem_freed;
105 unsigned long long link_up_cnt;
106 unsigned long long link_down_cnt;
107 unsigned long long link_up_time;
108 unsigned long long link_down_time;
109
110 /* Transfer Code statistics */
111 unsigned long long tx_buf_abort_cnt;
112 unsigned long long tx_desc_abort_cnt;
113 unsigned long long tx_parity_err_cnt;
114 unsigned long long tx_link_loss_cnt;
115 unsigned long long tx_list_proc_err_cnt;
116
117 unsigned long long rx_parity_err_cnt;
118 unsigned long long rx_abort_cnt;
119 unsigned long long rx_parity_abort_cnt;
120 unsigned long long rx_rda_fail_cnt;
121 unsigned long long rx_unkn_prot_cnt;
122 unsigned long long rx_fcs_err_cnt;
123 unsigned long long rx_buf_size_err_cnt;
124 unsigned long long rx_rxd_corrupt_cnt;
125 unsigned long long rx_unkn_err_cnt;
126
127 /* Error/alarm statistics*/
128 unsigned long long tda_err_cnt;
129 unsigned long long pfc_err_cnt;
130 unsigned long long pcc_err_cnt;
131 unsigned long long tti_err_cnt;
132 unsigned long long lso_err_cnt;
133 unsigned long long tpa_err_cnt;
134 unsigned long long sm_err_cnt;
135 unsigned long long mac_tmac_err_cnt;
136 unsigned long long mac_rmac_err_cnt;
137 unsigned long long xgxs_txgxs_err_cnt;
138 unsigned long long xgxs_rxgxs_err_cnt;
139 unsigned long long rc_err_cnt;
140 unsigned long long prc_pcix_err_cnt;
141 unsigned long long rpa_err_cnt;
142 unsigned long long rda_err_cnt;
143 unsigned long long rti_err_cnt;
144 unsigned long long mc_err_cnt;
145
146};
147
148/* Xpak releated alarm and warnings */
149struct xpakStat {
150 u64 alarm_transceiver_temp_high;
151 u64 alarm_transceiver_temp_low;
152 u64 alarm_laser_bias_current_high;
153 u64 alarm_laser_bias_current_low;
154 u64 alarm_laser_output_power_high;
155 u64 alarm_laser_output_power_low;
156 u64 warn_transceiver_temp_high;
157 u64 warn_transceiver_temp_low;
158 u64 warn_laser_bias_current_high;
159 u64 warn_laser_bias_current_low;
160 u64 warn_laser_output_power_high;
161 u64 warn_laser_output_power_low;
162 u64 xpak_regs_stat;
163 u32 xpak_timer_count;
164};
165
166
167/* The statistics block of Xena */
168struct stat_block {
169/* Tx MAC statistics counters. */
170 __le32 tmac_data_octets;
171 __le32 tmac_frms;
172 __le64 tmac_drop_frms;
173 __le32 tmac_bcst_frms;
174 __le32 tmac_mcst_frms;
175 __le64 tmac_pause_ctrl_frms;
176 __le32 tmac_ucst_frms;
177 __le32 tmac_ttl_octets;
178 __le32 tmac_any_err_frms;
179 __le32 tmac_nucst_frms;
180 __le64 tmac_ttl_less_fb_octets;
181 __le64 tmac_vld_ip_octets;
182 __le32 tmac_drop_ip;
183 __le32 tmac_vld_ip;
184 __le32 tmac_rst_tcp;
185 __le32 tmac_icmp;
186 __le64 tmac_tcp;
187 __le32 reserved_0;
188 __le32 tmac_udp;
189
190/* Rx MAC Statistics counters. */
191 __le32 rmac_data_octets;
192 __le32 rmac_vld_frms;
193 __le64 rmac_fcs_err_frms;
194 __le64 rmac_drop_frms;
195 __le32 rmac_vld_bcst_frms;
196 __le32 rmac_vld_mcst_frms;
197 __le32 rmac_out_rng_len_err_frms;
198 __le32 rmac_in_rng_len_err_frms;
199 __le64 rmac_long_frms;
200 __le64 rmac_pause_ctrl_frms;
201 __le64 rmac_unsup_ctrl_frms;
202 __le32 rmac_accepted_ucst_frms;
203 __le32 rmac_ttl_octets;
204 __le32 rmac_discarded_frms;
205 __le32 rmac_accepted_nucst_frms;
206 __le32 reserved_1;
207 __le32 rmac_drop_events;
208 __le64 rmac_ttl_less_fb_octets;
209 __le64 rmac_ttl_frms;
210 __le64 reserved_2;
211 __le32 rmac_usized_frms;
212 __le32 reserved_3;
213 __le32 rmac_frag_frms;
214 __le32 rmac_osized_frms;
215 __le32 reserved_4;
216 __le32 rmac_jabber_frms;
217 __le64 rmac_ttl_64_frms;
218 __le64 rmac_ttl_65_127_frms;
219 __le64 reserved_5;
220 __le64 rmac_ttl_128_255_frms;
221 __le64 rmac_ttl_256_511_frms;
222 __le64 reserved_6;
223 __le64 rmac_ttl_512_1023_frms;
224 __le64 rmac_ttl_1024_1518_frms;
225 __le32 rmac_ip;
226 __le32 reserved_7;
227 __le64 rmac_ip_octets;
228 __le32 rmac_drop_ip;
229 __le32 rmac_hdr_err_ip;
230 __le32 reserved_8;
231 __le32 rmac_icmp;
232 __le64 rmac_tcp;
233 __le32 rmac_err_drp_udp;
234 __le32 rmac_udp;
235 __le64 rmac_xgmii_err_sym;
236 __le64 rmac_frms_q0;
237 __le64 rmac_frms_q1;
238 __le64 rmac_frms_q2;
239 __le64 rmac_frms_q3;
240 __le64 rmac_frms_q4;
241 __le64 rmac_frms_q5;
242 __le64 rmac_frms_q6;
243 __le64 rmac_frms_q7;
244 __le16 rmac_full_q3;
245 __le16 rmac_full_q2;
246 __le16 rmac_full_q1;
247 __le16 rmac_full_q0;
248 __le16 rmac_full_q7;
249 __le16 rmac_full_q6;
250 __le16 rmac_full_q5;
251 __le16 rmac_full_q4;
252 __le32 reserved_9;
253 __le32 rmac_pause_cnt;
254 __le64 rmac_xgmii_data_err_cnt;
255 __le64 rmac_xgmii_ctrl_err_cnt;
256 __le32 rmac_err_tcp;
257 __le32 rmac_accepted_ip;
258
259/* PCI/PCI-X Read transaction statistics. */
260 __le32 new_rd_req_cnt;
261 __le32 rd_req_cnt;
262 __le32 rd_rtry_cnt;
263 __le32 new_rd_req_rtry_cnt;
264
265/* PCI/PCI-X Write/Read transaction statistics. */
266 __le32 wr_req_cnt;
267 __le32 wr_rtry_rd_ack_cnt;
268 __le32 new_wr_req_rtry_cnt;
269 __le32 new_wr_req_cnt;
270 __le32 wr_disc_cnt;
271 __le32 wr_rtry_cnt;
272
273/* PCI/PCI-X Write / DMA Transaction statistics. */
274 __le32 txp_wr_cnt;
275 __le32 rd_rtry_wr_ack_cnt;
276 __le32 txd_wr_cnt;
277 __le32 txd_rd_cnt;
278 __le32 rxd_wr_cnt;
279 __le32 rxd_rd_cnt;
280 __le32 rxf_wr_cnt;
281 __le32 txf_rd_cnt;
282
283/* Tx MAC statistics overflow counters. */
284 __le32 tmac_data_octets_oflow;
285 __le32 tmac_frms_oflow;
286 __le32 tmac_bcst_frms_oflow;
287 __le32 tmac_mcst_frms_oflow;
288 __le32 tmac_ucst_frms_oflow;
289 __le32 tmac_ttl_octets_oflow;
290 __le32 tmac_any_err_frms_oflow;
291 __le32 tmac_nucst_frms_oflow;
292 __le64 tmac_vlan_frms;
293 __le32 tmac_drop_ip_oflow;
294 __le32 tmac_vld_ip_oflow;
295 __le32 tmac_rst_tcp_oflow;
296 __le32 tmac_icmp_oflow;
297 __le32 tpa_unknown_protocol;
298 __le32 tmac_udp_oflow;
299 __le32 reserved_10;
300 __le32 tpa_parse_failure;
301
302/* Rx MAC Statistics overflow counters. */
303 __le32 rmac_data_octets_oflow;
304 __le32 rmac_vld_frms_oflow;
305 __le32 rmac_vld_bcst_frms_oflow;
306 __le32 rmac_vld_mcst_frms_oflow;
307 __le32 rmac_accepted_ucst_frms_oflow;
308 __le32 rmac_ttl_octets_oflow;
309 __le32 rmac_discarded_frms_oflow;
310 __le32 rmac_accepted_nucst_frms_oflow;
311 __le32 rmac_usized_frms_oflow;
312 __le32 rmac_drop_events_oflow;
313 __le32 rmac_frag_frms_oflow;
314 __le32 rmac_osized_frms_oflow;
315 __le32 rmac_ip_oflow;
316 __le32 rmac_jabber_frms_oflow;
317 __le32 rmac_icmp_oflow;
318 __le32 rmac_drop_ip_oflow;
319 __le32 rmac_err_drp_udp_oflow;
320 __le32 rmac_udp_oflow;
321 __le32 reserved_11;
322 __le32 rmac_pause_cnt_oflow;
323 __le64 rmac_ttl_1519_4095_frms;
324 __le64 rmac_ttl_4096_8191_frms;
325 __le64 rmac_ttl_8192_max_frms;
326 __le64 rmac_ttl_gt_max_frms;
327 __le64 rmac_osized_alt_frms;
328 __le64 rmac_jabber_alt_frms;
329 __le64 rmac_gt_max_alt_frms;
330 __le64 rmac_vlan_frms;
331 __le32 rmac_len_discard;
332 __le32 rmac_fcs_discard;
333 __le32 rmac_pf_discard;
334 __le32 rmac_da_discard;
335 __le32 rmac_red_discard;
336 __le32 rmac_rts_discard;
337 __le32 reserved_12;
338 __le32 rmac_ingm_full_discard;
339 __le32 reserved_13;
340 __le32 rmac_accepted_ip_oflow;
341 __le32 reserved_14;
342 __le32 link_fault_cnt;
343 u8 buffer[20];
344 struct swStat sw_stat;
345 struct xpakStat xpak_stat;
346};
347
348/* Default value for 'vlan_strip_tag' configuration parameter */
349#define NO_STRIP_IN_PROMISC 2
350
351/*
352 * Structures representing different init time configuration
353 * parameters of the NIC.
354 */
355
356#define MAX_TX_FIFOS 8
357#define MAX_RX_RINGS 8
358
359#define FIFO_DEFAULT_NUM 5
360#define FIFO_UDP_MAX_NUM 2 /* 0 - even, 1 -odd ports */
361#define FIFO_OTHER_MAX_NUM 1
362
363
364#define MAX_RX_DESC_1 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 127 )
365#define MAX_RX_DESC_2 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 85 )
366#define MAX_RX_DESC_3 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 85 )
367#define MAX_TX_DESC (MAX_AVAILABLE_TXDS)
368
369/* FIFO mappings for all possible number of fifos configured */
370static int fifo_map[][MAX_TX_FIFOS] = {
371 {0, 0, 0, 0, 0, 0, 0, 0},
372 {0, 0, 0, 0, 1, 1, 1, 1},
373 {0, 0, 0, 1, 1, 1, 2, 2},
374 {0, 0, 1, 1, 2, 2, 3, 3},
375 {0, 0, 1, 1, 2, 2, 3, 4},
376 {0, 0, 1, 1, 2, 3, 4, 5},
377 {0, 0, 1, 2, 3, 4, 5, 6},
378 {0, 1, 2, 3, 4, 5, 6, 7},
379};
380
381static u16 fifo_selector[MAX_TX_FIFOS] = {0, 1, 3, 3, 7, 7, 7, 7};
382
383/* Maintains Per FIFO related information. */
384struct tx_fifo_config {
385#define MAX_AVAILABLE_TXDS 8192
386 u32 fifo_len; /* specifies len of FIFO upto 8192, ie no of TxDLs */
387/* Priority definition */
388#define TX_FIFO_PRI_0 0 /*Highest */
389#define TX_FIFO_PRI_1 1
390#define TX_FIFO_PRI_2 2
391#define TX_FIFO_PRI_3 3
392#define TX_FIFO_PRI_4 4
393#define TX_FIFO_PRI_5 5
394#define TX_FIFO_PRI_6 6
395#define TX_FIFO_PRI_7 7 /*lowest */
396 u8 fifo_priority; /* specifies pointer level for FIFO */
397 /* user should not set twos fifos with same pri */
398 u8 f_no_snoop;
399#define NO_SNOOP_TXD 0x01
400#define NO_SNOOP_TXD_BUFFER 0x02
401};
402
403
404/* Maintains per Ring related information */
405struct rx_ring_config {
406 u32 num_rxd; /*No of RxDs per Rx Ring */
407#define RX_RING_PRI_0 0 /* highest */
408#define RX_RING_PRI_1 1
409#define RX_RING_PRI_2 2
410#define RX_RING_PRI_3 3
411#define RX_RING_PRI_4 4
412#define RX_RING_PRI_5 5
413#define RX_RING_PRI_6 6
414#define RX_RING_PRI_7 7 /* lowest */
415
416 u8 ring_priority; /*Specifies service priority of ring */
417 /* OSM should not set any two rings with same priority */
418 u8 ring_org; /*Organization of ring */
419#define RING_ORG_BUFF1 0x01
420#define RX_RING_ORG_BUFF3 0x03
421#define RX_RING_ORG_BUFF5 0x05
422
423 u8 f_no_snoop;
424#define NO_SNOOP_RXD 0x01
425#define NO_SNOOP_RXD_BUFFER 0x02
426};
427
428/* This structure provides contains values of the tunable parameters
429 * of the H/W
430 */
431struct config_param {
432/* Tx Side */
433 u32 tx_fifo_num; /*Number of Tx FIFOs */
434
435 /* 0-No steering, 1-Priority steering, 2-Default fifo map */
436#define NO_STEERING 0
437#define TX_PRIORITY_STEERING 0x1
438#define TX_DEFAULT_STEERING 0x2
439 u8 tx_steering_type;
440
441 u8 fifo_mapping[MAX_TX_FIFOS];
442 struct tx_fifo_config tx_cfg[MAX_TX_FIFOS]; /*Per-Tx FIFO config */
443 u32 max_txds; /*Max no. of Tx buffer descriptor per TxDL */
444 u64 tx_intr_type;
445#define INTA 0
446#define MSI_X 2
447 u8 intr_type;
448 u8 napi;
449
450 /* Specifies if Tx Intr is UTILZ or PER_LIST type. */
451
452/* Rx Side */
453 u32 rx_ring_num; /*Number of receive rings */
454#define MAX_RX_BLOCKS_PER_RING 150
455
456 struct rx_ring_config rx_cfg[MAX_RX_RINGS]; /*Per-Rx Ring config */
457
458#define HEADER_ETHERNET_II_802_3_SIZE 14
459#define HEADER_802_2_SIZE 3
460#define HEADER_SNAP_SIZE 5
461#define HEADER_VLAN_SIZE 4
462
463#define MIN_MTU 46
464#define MAX_PYLD 1500
465#define MAX_MTU (MAX_PYLD+18)
466#define MAX_MTU_VLAN (MAX_PYLD+22)
467#define MAX_PYLD_JUMBO 9600
468#define MAX_MTU_JUMBO (MAX_PYLD_JUMBO+18)
469#define MAX_MTU_JUMBO_VLAN (MAX_PYLD_JUMBO+22)
470 u16 bus_speed;
471 int max_mc_addr; /* xena=64 herc=256 */
472 int max_mac_addr; /* xena=16 herc=64 */
473 int mc_start_offset; /* xena=16 herc=64 */
474 u8 multiq;
475};
476
477/* Structure representing MAC Addrs */
478struct mac_addr {
479 u8 mac_addr[ETH_ALEN];
480};
481
482/* Structure that represent every FIFO element in the BAR1
483 * Address location.
484 */
485struct TxFIFO_element {
486 u64 TxDL_Pointer;
487
488 u64 List_Control;
489#define TX_FIFO_LAST_TXD_NUM( val) vBIT(val,0,8)
490#define TX_FIFO_FIRST_LIST s2BIT(14)
491#define TX_FIFO_LAST_LIST s2BIT(15)
492#define TX_FIFO_FIRSTNLAST_LIST vBIT(3,14,2)
493#define TX_FIFO_SPECIAL_FUNC s2BIT(23)
494#define TX_FIFO_DS_NO_SNOOP s2BIT(31)
495#define TX_FIFO_BUFF_NO_SNOOP s2BIT(30)
496};
497
498/* Tx descriptor structure */
499struct TxD {
500 u64 Control_1;
501/* bit mask */
502#define TXD_LIST_OWN_XENA s2BIT(7)
503#define TXD_T_CODE (s2BIT(12)|s2BIT(13)|s2BIT(14)|s2BIT(15))
504#define TXD_T_CODE_OK(val) (|(val & TXD_T_CODE))
505#define GET_TXD_T_CODE(val) ((val & TXD_T_CODE)<<12)
506#define TXD_GATHER_CODE (s2BIT(22) | s2BIT(23))
507#define TXD_GATHER_CODE_FIRST s2BIT(22)
508#define TXD_GATHER_CODE_LAST s2BIT(23)
509#define TXD_TCP_LSO_EN s2BIT(30)
510#define TXD_UDP_COF_EN s2BIT(31)
511#define TXD_UFO_EN s2BIT(31) | s2BIT(30)
512#define TXD_TCP_LSO_MSS(val) vBIT(val,34,14)
513#define TXD_UFO_MSS(val) vBIT(val,34,14)
514#define TXD_BUFFER0_SIZE(val) vBIT(val,48,16)
515
516 u64 Control_2;
517#define TXD_TX_CKO_CONTROL (s2BIT(5)|s2BIT(6)|s2BIT(7))
518#define TXD_TX_CKO_IPV4_EN s2BIT(5)
519#define TXD_TX_CKO_TCP_EN s2BIT(6)
520#define TXD_TX_CKO_UDP_EN s2BIT(7)
521#define TXD_VLAN_ENABLE s2BIT(15)
522#define TXD_VLAN_TAG(val) vBIT(val,16,16)
523#define TXD_INT_NUMBER(val) vBIT(val,34,6)
524#define TXD_INT_TYPE_PER_LIST s2BIT(47)
525#define TXD_INT_TYPE_UTILZ s2BIT(46)
526#define TXD_SET_MARKER vBIT(0x6,0,4)
527
528 u64 Buffer_Pointer;
529 u64 Host_Control; /* reserved for host */
530};
531
532/* Structure to hold the phy and virt addr of every TxDL. */
533struct list_info_hold {
534 dma_addr_t list_phy_addr;
535 void *list_virt_addr;
536};
537
538/* Rx descriptor structure for 1 buffer mode */
539struct RxD_t {
540 u64 Host_Control; /* reserved for host */
541 u64 Control_1;
542#define RXD_OWN_XENA s2BIT(7)
543#define RXD_T_CODE (s2BIT(12)|s2BIT(13)|s2BIT(14)|s2BIT(15))
544#define RXD_FRAME_PROTO vBIT(0xFFFF,24,8)
545#define RXD_FRAME_VLAN_TAG s2BIT(24)
546#define RXD_FRAME_PROTO_IPV4 s2BIT(27)
547#define RXD_FRAME_PROTO_IPV6 s2BIT(28)
548#define RXD_FRAME_IP_FRAG s2BIT(29)
549#define RXD_FRAME_PROTO_TCP s2BIT(30)
550#define RXD_FRAME_PROTO_UDP s2BIT(31)
551#define TCP_OR_UDP_FRAME (RXD_FRAME_PROTO_TCP | RXD_FRAME_PROTO_UDP)
552#define RXD_GET_L3_CKSUM(val) ((u16)(val>> 16) & 0xFFFF)
553#define RXD_GET_L4_CKSUM(val) ((u16)(val) & 0xFFFF)
554
555 u64 Control_2;
556#define THE_RXD_MARK 0x3
557#define SET_RXD_MARKER vBIT(THE_RXD_MARK, 0, 2)
558#define GET_RXD_MARKER(ctrl) ((ctrl & SET_RXD_MARKER) >> 62)
559
560#define MASK_VLAN_TAG vBIT(0xFFFF,48,16)
561#define SET_VLAN_TAG(val) vBIT(val,48,16)
562#define SET_NUM_TAG(val) vBIT(val,16,32)
563
564
565};
566/* Rx descriptor structure for 1 buffer mode */
567struct RxD1 {
568 struct RxD_t h;
569
570#define MASK_BUFFER0_SIZE_1 vBIT(0x3FFF,2,14)
571#define SET_BUFFER0_SIZE_1(val) vBIT(val,2,14)
572#define RXD_GET_BUFFER0_SIZE_1(_Control_2) \
573 (u16)((_Control_2 & MASK_BUFFER0_SIZE_1) >> 48)
574 u64 Buffer0_ptr;
575};
576/* Rx descriptor structure for 3 or 2 buffer mode */
577
578struct RxD3 {
579 struct RxD_t h;
580
581#define MASK_BUFFER0_SIZE_3 vBIT(0xFF,2,14)
582#define MASK_BUFFER1_SIZE_3 vBIT(0xFFFF,16,16)
583#define MASK_BUFFER2_SIZE_3 vBIT(0xFFFF,32,16)
584#define SET_BUFFER0_SIZE_3(val) vBIT(val,8,8)
585#define SET_BUFFER1_SIZE_3(val) vBIT(val,16,16)
586#define SET_BUFFER2_SIZE_3(val) vBIT(val,32,16)
587#define RXD_GET_BUFFER0_SIZE_3(Control_2) \
588 (u8)((Control_2 & MASK_BUFFER0_SIZE_3) >> 48)
589#define RXD_GET_BUFFER1_SIZE_3(Control_2) \
590 (u16)((Control_2 & MASK_BUFFER1_SIZE_3) >> 32)
591#define RXD_GET_BUFFER2_SIZE_3(Control_2) \
592 (u16)((Control_2 & MASK_BUFFER2_SIZE_3) >> 16)
593#define BUF0_LEN 40
594#define BUF1_LEN 1
595
596 u64 Buffer0_ptr;
597 u64 Buffer1_ptr;
598 u64 Buffer2_ptr;
599};
600
601
602/* Structure that represents the Rx descriptor block which contains
603 * 128 Rx descriptors.
604 */
605struct RxD_block {
606#define MAX_RXDS_PER_BLOCK_1 127
607 struct RxD1 rxd[MAX_RXDS_PER_BLOCK_1];
608
609 u64 reserved_0;
610#define END_OF_BLOCK 0xFEFFFFFFFFFFFFFFULL
611 u64 reserved_1; /* 0xFEFFFFFFFFFFFFFF to mark last
612 * Rxd in this blk */
613 u64 reserved_2_pNext_RxD_block; /* Logical ptr to next */
614 u64 pNext_RxD_Blk_physical; /* Buff0_ptr.In a 32 bit arch
615 * the upper 32 bits should
616 * be 0 */
617};
618
619#define SIZE_OF_BLOCK 4096
620
621#define RXD_MODE_1 0 /* One Buffer mode */
622#define RXD_MODE_3B 1 /* Two Buffer mode */
623
624/* Structure to hold virtual addresses of Buf0 and Buf1 in
625 * 2buf mode. */
626struct buffAdd {
627 void *ba_0_org;
628 void *ba_1_org;
629 void *ba_0;
630 void *ba_1;
631};
632
633/* Structure which stores all the MAC control parameters */
634
635/* This structure stores the offset of the RxD in the ring
636 * from which the Rx Interrupt processor can start picking
637 * up the RxDs for processing.
638 */
639struct rx_curr_get_info {
640 u32 block_index;
641 u32 offset;
642 u32 ring_len;
643};
644
645struct rx_curr_put_info {
646 u32 block_index;
647 u32 offset;
648 u32 ring_len;
649};
650
651/* This structure stores the offset of the TxDl in the FIFO
652 * from which the Tx Interrupt processor can start picking
653 * up the TxDLs for send complete interrupt processing.
654 */
655struct tx_curr_get_info {
656 u32 offset;
657 u32 fifo_len;
658};
659
660struct tx_curr_put_info {
661 u32 offset;
662 u32 fifo_len;
663};
664
665struct rxd_info {
666 void *virt_addr;
667 dma_addr_t dma_addr;
668};
669
670/* Structure that holds the Phy and virt addresses of the Blocks */
671struct rx_block_info {
672 void *block_virt_addr;
673 dma_addr_t block_dma_addr;
674 struct rxd_info *rxds;
675};
676
677/* Data structure to represent a LRO session */
678struct lro {
679 struct sk_buff *parent;
680 struct sk_buff *last_frag;
681 u8 *l2h;
682 struct iphdr *iph;
683 struct tcphdr *tcph;
684 u32 tcp_next_seq;
685 __be32 tcp_ack;
686 int total_len;
687 int frags_len;
688 int sg_num;
689 int in_use;
690 __be16 window;
691 u16 vlan_tag;
692 u32 cur_tsval;
693 __be32 cur_tsecr;
694 u8 saw_ts;
695} ____cacheline_aligned;
696
697/* Ring specific structure */
698struct ring_info {
699 /* The ring number */
700 int ring_no;
701
702 /* per-ring buffer counter */
703 u32 rx_bufs_left;
704
705#define MAX_LRO_SESSIONS 32
706 struct lro lro0_n[MAX_LRO_SESSIONS];
707 u8 lro;
708
709 /* copy of sp->rxd_mode flag */
710 int rxd_mode;
711
712 /* Number of rxds per block for the rxd_mode */
713 int rxd_count;
714
715 /* copy of sp pointer */
716 struct s2io_nic *nic;
717
718 /* copy of sp->dev pointer */
719 struct net_device *dev;
720
721 /* copy of sp->pdev pointer */
722 struct pci_dev *pdev;
723
724 /* Per ring napi struct */
725 struct napi_struct napi;
726
727 unsigned long interrupt_count;
728
729 /*
730 * Place holders for the virtual and physical addresses of
731 * all the Rx Blocks
732 */
733 struct rx_block_info rx_blocks[MAX_RX_BLOCKS_PER_RING];
734 int block_count;
735 int pkt_cnt;
736
737 /*
738 * Put pointer info which indictes which RxD has to be replenished
739 * with a new buffer.
740 */
741 struct rx_curr_put_info rx_curr_put_info;
742
743 /*
744 * Get pointer info which indictes which is the last RxD that was
745 * processed by the driver.
746 */
747 struct rx_curr_get_info rx_curr_get_info;
748
749 /* interface MTU value */
750 unsigned mtu;
751
752 /* Buffer Address store. */
753 struct buffAdd **ba;
754
755 /* per-Ring statistics */
756 unsigned long rx_packets;
757 unsigned long rx_bytes;
758} ____cacheline_aligned;
759
760/* Fifo specific structure */
761struct fifo_info {
762 /* FIFO number */
763 int fifo_no;
764
765 /* Maximum TxDs per TxDL */
766 int max_txds;
767
768 /* Place holder of all the TX List's Phy and Virt addresses. */
769 struct list_info_hold *list_info;
770
771 /*
772 * Current offset within the tx FIFO where driver would write
773 * new Tx frame
774 */
775 struct tx_curr_put_info tx_curr_put_info;
776
777 /*
778 * Current offset within tx FIFO from where the driver would start freeing
779 * the buffers
780 */
781 struct tx_curr_get_info tx_curr_get_info;
782#define FIFO_QUEUE_START 0
783#define FIFO_QUEUE_STOP 1
784 int queue_state;
785
786 /* copy of sp->dev pointer */
787 struct net_device *dev;
788
789 /* copy of multiq status */
790 u8 multiq;
791
792 /* Per fifo lock */
793 spinlock_t tx_lock;
794
795 /* Per fifo UFO in band structure */
796 u64 *ufo_in_band_v;
797
798 struct s2io_nic *nic;
799} ____cacheline_aligned;
800
801/* Information related to the Tx and Rx FIFOs and Rings of Xena
802 * is maintained in this structure.
803 */
804struct mac_info {
805/* tx side stuff */
806 /* logical pointer of start of each Tx FIFO */
807 struct TxFIFO_element __iomem *tx_FIFO_start[MAX_TX_FIFOS];
808
809 /* Fifo specific structure */
810 struct fifo_info fifos[MAX_TX_FIFOS];
811
812 /* Save virtual address of TxD page with zero DMA addr(if any) */
813 void *zerodma_virt_addr;
814
815/* rx side stuff */
816 /* Ring specific structure */
817 struct ring_info rings[MAX_RX_RINGS];
818
819 u16 rmac_pause_time;
820 u16 mc_pause_threshold_q0q3;
821 u16 mc_pause_threshold_q4q7;
822
823 void *stats_mem; /* orignal pointer to allocated mem */
824 dma_addr_t stats_mem_phy; /* Physical address of the stat block */
825 u32 stats_mem_sz;
826 struct stat_block *stats_info; /* Logical address of the stat block */
827};
828
829/* structure representing the user defined MAC addresses */
830struct usr_addr {
831 char addr[ETH_ALEN];
832 int usage_cnt;
833};
834
835/* Default Tunable parameters of the NIC. */
836#define DEFAULT_FIFO_0_LEN 4096
837#define DEFAULT_FIFO_1_7_LEN 512
838#define SMALL_BLK_CNT 30
839#define LARGE_BLK_CNT 100
840
841/*
842 * Structure to keep track of the MSI-X vectors and the corresponding
843 * argument registered against each vector
844 */
845#define MAX_REQUESTED_MSI_X 9
846struct s2io_msix_entry
847{
848 u16 vector;
849 u16 entry;
850 void *arg;
851
852 u8 type;
853#define MSIX_ALARM_TYPE 1
854#define MSIX_RING_TYPE 2
855
856 u8 in_use;
857#define MSIX_REGISTERED_SUCCESS 0xAA
858};
859
860struct msix_info_st {
861 u64 addr;
862 u64 data;
863};
864
865/* These flags represent the devices temporary state */
866enum s2io_device_state_t
867{
868 __S2IO_STATE_LINK_TASK=0,
869 __S2IO_STATE_CARD_UP
870};
871
872/* Structure representing one instance of the NIC */
873struct s2io_nic {
874 int rxd_mode;
875 /*
876 * Count of packets to be processed in a given iteration, it will be indicated
877 * by the quota field of the device structure when NAPI is enabled.
878 */
879 int pkts_to_process;
880 struct net_device *dev;
881 struct mac_info mac_control;
882 struct config_param config;
883 struct pci_dev *pdev;
884 void __iomem *bar0;
885 void __iomem *bar1;
886#define MAX_MAC_SUPPORTED 16
887#define MAX_SUPPORTED_MULTICASTS MAX_MAC_SUPPORTED
888
889 struct mac_addr def_mac_addr[256];
890
891 struct net_device_stats stats;
892 int high_dma_flag;
893 int device_enabled_once;
894
895 char name[60];
896
897 /* Timer that handles I/O errors/exceptions */
898 struct timer_list alarm_timer;
899
900 /* Space to back up the PCI config space */
901 u32 config_space[256 / sizeof(u32)];
902
903#define PROMISC 1
904#define ALL_MULTI 2
905
906#define MAX_ADDRS_SUPPORTED 64
907 u16 usr_addr_count;
908 u16 mc_addr_count;
909 struct usr_addr usr_addrs[256];
910
911 u16 m_cast_flg;
912 u16 all_multi_pos;
913 u16 promisc_flg;
914
915 /* Id timer, used to blink NIC to physically identify NIC. */
916 struct timer_list id_timer;
917
918 /* Restart timer, used to restart NIC if the device is stuck and
919 * a schedule task that will set the correct Link state once the
920 * NIC's PHY has stabilized after a state change.
921 */
922 struct work_struct rst_timer_task;
923 struct work_struct set_link_task;
924
925 /* Flag that can be used to turn on or turn off the Rx checksum
926 * offload feature.
927 */
928 int rx_csum;
929
930 /* Below variables are used for fifo selection to transmit a packet */
931 u16 fifo_selector[MAX_TX_FIFOS];
932
933 /* Total fifos for tcp packets */
934 u8 total_tcp_fifos;
935
936 /*
937 * Beginning index of udp for udp packets
938 * Value will be equal to
939 * (tx_fifo_num - FIFO_UDP_MAX_NUM - FIFO_OTHER_MAX_NUM)
940 */
941 u8 udp_fifo_idx;
942
943 u8 total_udp_fifos;
944
945 /*
946 * Beginning index of fifo for all other packets
947 * Value will be equal to (tx_fifo_num - FIFO_OTHER_MAX_NUM)
948 */
949 u8 other_fifo_idx;
950
951 struct napi_struct napi;
952 /* after blink, the adapter must be restored with original
953 * values.
954 */
955 u64 adapt_ctrl_org;
956
957 /* Last known link state. */
958 u16 last_link_state;
959#define LINK_DOWN 1
960#define LINK_UP 2
961
962 int task_flag;
963 unsigned long long start_time;
964 struct vlan_group *vlgrp;
965 int vlan_strip_flag;
966#define MSIX_FLG 0xA5
967 int num_entries;
968 struct msix_entry *entries;
969 int msi_detected;
970 wait_queue_head_t msi_wait;
971 struct s2io_msix_entry *s2io_entries;
972 char desc[MAX_REQUESTED_MSI_X][25];
973
974 int avail_msix_vectors; /* No. of MSI-X vectors granted by system */
975
976 struct msix_info_st msix_info[0x3f];
977
978#define XFRAME_I_DEVICE 1
979#define XFRAME_II_DEVICE 2
980 u8 device_type;
981
982 unsigned long clubbed_frms_cnt;
983 unsigned long sending_both;
984 u8 lro;
985 u16 lro_max_aggr_per_sess;
986 volatile unsigned long state;
987 u64 general_int_mask;
988
989#define VPD_STRING_LEN 80
990 u8 product_name[VPD_STRING_LEN];
991 u8 serial_num[VPD_STRING_LEN];
992};
993
994#define RESET_ERROR 1;
995#define CMD_ERROR 2;
996
997/* OS related system calls */
998#ifndef readq
999static inline u64 readq(void __iomem *addr)
1000{
1001 u64 ret = 0;
1002 ret = readl(addr + 4);
1003 ret <<= 32;
1004 ret |= readl(addr);
1005
1006 return ret;
1007}
1008#endif
1009
1010#ifndef writeq
1011static inline void writeq(u64 val, void __iomem *addr)
1012{
1013 writel((u32) (val), addr);
1014 writel((u32) (val >> 32), (addr + 4));
1015}
1016#endif
1017
1018/*
1019 * Some registers have to be written in a particular order to
1020 * expect correct hardware operation. The macro SPECIAL_REG_WRITE
1021 * is used to perform such ordered writes. Defines UF (Upper First)
1022 * and LF (Lower First) will be used to specify the required write order.
1023 */
1024#define UF 1
1025#define LF 2
1026static inline void SPECIAL_REG_WRITE(u64 val, void __iomem *addr, int order)
1027{
1028 u32 ret;
1029
1030 if (order == LF) {
1031 writel((u32) (val), addr);
1032 ret = readl(addr);
1033 writel((u32) (val >> 32), (addr + 4));
1034 ret = readl(addr + 4);
1035 } else {
1036 writel((u32) (val >> 32), (addr + 4));
1037 ret = readl(addr + 4);
1038 writel((u32) (val), addr);
1039 ret = readl(addr);
1040 }
1041}
1042
1043/* Interrupt related values of Xena */
1044
1045#define ENABLE_INTRS 1
1046#define DISABLE_INTRS 2
1047
1048/* Highest level interrupt blocks */
1049#define TX_PIC_INTR (0x0001<<0)
1050#define TX_DMA_INTR (0x0001<<1)
1051#define TX_MAC_INTR (0x0001<<2)
1052#define TX_XGXS_INTR (0x0001<<3)
1053#define TX_TRAFFIC_INTR (0x0001<<4)
1054#define RX_PIC_INTR (0x0001<<5)
1055#define RX_DMA_INTR (0x0001<<6)
1056#define RX_MAC_INTR (0x0001<<7)
1057#define RX_XGXS_INTR (0x0001<<8)
1058#define RX_TRAFFIC_INTR (0x0001<<9)
1059#define MC_INTR (0x0001<<10)
1060#define ENA_ALL_INTRS ( TX_PIC_INTR | \
1061 TX_DMA_INTR | \
1062 TX_MAC_INTR | \
1063 TX_XGXS_INTR | \
1064 TX_TRAFFIC_INTR | \
1065 RX_PIC_INTR | \
1066 RX_DMA_INTR | \
1067 RX_MAC_INTR | \
1068 RX_XGXS_INTR | \
1069 RX_TRAFFIC_INTR | \
1070 MC_INTR )
1071
1072/* Interrupt masks for the general interrupt mask register */
1073#define DISABLE_ALL_INTRS 0xFFFFFFFFFFFFFFFFULL
1074
1075#define TXPIC_INT_M s2BIT(0)
1076#define TXDMA_INT_M s2BIT(1)
1077#define TXMAC_INT_M s2BIT(2)
1078#define TXXGXS_INT_M s2BIT(3)
1079#define TXTRAFFIC_INT_M s2BIT(8)
1080#define PIC_RX_INT_M s2BIT(32)
1081#define RXDMA_INT_M s2BIT(33)
1082#define RXMAC_INT_M s2BIT(34)
1083#define MC_INT_M s2BIT(35)
1084#define RXXGXS_INT_M s2BIT(36)
1085#define RXTRAFFIC_INT_M s2BIT(40)
1086
1087/* PIC level Interrupts TODO*/
1088
1089/* DMA level Inressupts */
1090#define TXDMA_PFC_INT_M s2BIT(0)
1091#define TXDMA_PCC_INT_M s2BIT(2)
1092
1093/* PFC block interrupts */
1094#define PFC_MISC_ERR_1 s2BIT(0) /* Interrupt to indicate FIFO full */
1095
1096/* PCC block interrupts. */
1097#define PCC_FB_ECC_ERR vBIT(0xff, 16, 8) /* Interrupt to indicate
1098 PCC_FB_ECC Error. */
1099
1100#define RXD_GET_VLAN_TAG(Control_2) (u16)(Control_2 & MASK_VLAN_TAG)
1101/*
1102 * Prototype declaration.
1103 */
1104static int __devinit s2io_init_nic(struct pci_dev *pdev,
1105 const struct pci_device_id *pre);
1106static void __devexit s2io_rem_nic(struct pci_dev *pdev);
1107static int init_shared_mem(struct s2io_nic *sp);
1108static void free_shared_mem(struct s2io_nic *sp);
1109static int init_nic(struct s2io_nic *nic);
1110static int rx_intr_handler(struct ring_info *ring_data, int budget);
1111static void s2io_txpic_intr_handle(struct s2io_nic *sp);
1112static void tx_intr_handler(struct fifo_info *fifo_data);
1113static void s2io_handle_errors(void * dev_id);
1114
1115static int s2io_starter(void);
1116static void s2io_closer(void);
1117static void s2io_tx_watchdog(struct net_device *dev);
1118static void s2io_set_multicast(struct net_device *dev);
1119static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp);
1120static void s2io_link(struct s2io_nic * sp, int link);
1121static void s2io_reset(struct s2io_nic * sp);
1122static int s2io_poll_msix(struct napi_struct *napi, int budget);
1123static int s2io_poll_inta(struct napi_struct *napi, int budget);
1124static void s2io_init_pci(struct s2io_nic * sp);
1125static int do_s2io_prog_unicast(struct net_device *dev, u8 *addr);
1126static void s2io_alarm_handle(unsigned long data);
1127static irqreturn_t
1128s2io_msix_ring_handle(int irq, void *dev_id);
1129static irqreturn_t
1130s2io_msix_fifo_handle(int irq, void *dev_id);
1131static irqreturn_t s2io_isr(int irq, void *dev_id);
1132static int verify_xena_quiescence(struct s2io_nic *sp);
1133static const struct ethtool_ops netdev_ethtool_ops;
1134static void s2io_set_link(struct work_struct *work);
1135static int s2io_set_swapper(struct s2io_nic * sp);
1136static void s2io_card_down(struct s2io_nic *nic);
1137static int s2io_card_up(struct s2io_nic *nic);
1138static int wait_for_cmd_complete(void __iomem *addr, u64 busy_bit,
1139 int bit_state);
1140static int s2io_add_isr(struct s2io_nic * sp);
1141static void s2io_rem_isr(struct s2io_nic * sp);
1142
1143static void restore_xmsi_data(struct s2io_nic *nic);
1144static void do_s2io_store_unicast_mc(struct s2io_nic *sp);
1145static void do_s2io_restore_unicast_mc(struct s2io_nic *sp);
1146static u64 do_s2io_read_unicast_mc(struct s2io_nic *sp, int offset);
1147static int do_s2io_add_mc(struct s2io_nic *sp, u8 *addr);
1148static int do_s2io_add_mac(struct s2io_nic *sp, u64 addr, int offset);
1149static int do_s2io_delete_unicast_mc(struct s2io_nic *sp, u64 addr);
1150
1151static int s2io_club_tcp_session(struct ring_info *ring_data, u8 *buffer,
1152 u8 **tcp, u32 *tcp_len, struct lro **lro, struct RxD_t *rxdp,
1153 struct s2io_nic *sp);
1154static void clear_lro_session(struct lro *lro);
1155static void queue_rx_frame(struct sk_buff *skb, u16 vlan_tag);
1156static void update_L3L4_header(struct s2io_nic *sp, struct lro *lro);
1157static void lro_append_pkt(struct s2io_nic *sp, struct lro *lro,
1158 struct sk_buff *skb, u32 tcp_len);
1159static int rts_ds_steer(struct s2io_nic *nic, u8 ds_codepoint, u8 ring);
1160
1161static pci_ers_result_t s2io_io_error_detected(struct pci_dev *pdev,
1162 pci_channel_state_t state);
1163static pci_ers_result_t s2io_io_slot_reset(struct pci_dev *pdev);
1164static void s2io_io_resume(struct pci_dev *pdev);
1165
1166#define s2io_tcp_mss(skb) skb_shinfo(skb)->gso_size
1167#define s2io_udp_mss(skb) skb_shinfo(skb)->gso_size
1168#define s2io_offload_type(skb) skb_shinfo(skb)->gso_type
1169
1170#define S2IO_PARM_INT(X, def_val) \
1171 static unsigned int X = def_val;\
1172 module_param(X , uint, 0);
1173
1174#endif /* _S2IO_H */