1 /************************************************************************
2 * s2io.h: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC
3 * Copyright(c) 2002-2007 Neterion Inc.
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 ************************************************************************/
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)
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))
40 /* Maximum time to flicker LED when asked to identify NIC using ethtool */
41 #define MAX_FLICKER_TIME 60000 /* 60 Secs */
43 /* Maximum outstanding splits to be configured into xena. */
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
54 #define XENA_MAX_OUTSTANDING_SPLITS(n) (n << 4)
56 /* OS concerned variables and constants */
57 #define WATCH_DOG_TIMEOUT 15*HZ
59 #define ALIGN_SIZE 127
60 #define PCIX_COMMAND_REGISTER 0x62
63 * Debug related variables.
65 /* different debug levels. */
72 /* Global variable that defines the present debug level of the driver. */
73 static int debug_level = ERR_DBG;
75 /* DEBUG message print. */
76 #define DBG_PRINT(dbg_level, args...) if(!(debug_level<dbg_level)) printk(args)
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
83 /* Driver statistics maintained by driver */
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];
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;
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;
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;
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;
148 /* Xpak releated alarm and warnings */
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;
163 u32 xpak_timer_count;
167 /* The statistics block of Xena */
169 /* Tx MAC statistics counters. */
170 __le32 tmac_data_octets;
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;
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;
207 __le32 rmac_drop_events;
208 __le64 rmac_ttl_less_fb_octets;
209 __le64 rmac_ttl_frms;
211 __le32 rmac_usized_frms;
213 __le32 rmac_frag_frms;
214 __le32 rmac_osized_frms;
216 __le32 rmac_jabber_frms;
217 __le64 rmac_ttl_64_frms;
218 __le64 rmac_ttl_65_127_frms;
220 __le64 rmac_ttl_128_255_frms;
221 __le64 rmac_ttl_256_511_frms;
223 __le64 rmac_ttl_512_1023_frms;
224 __le64 rmac_ttl_1024_1518_frms;
227 __le64 rmac_ip_octets;
229 __le32 rmac_hdr_err_ip;
233 __le32 rmac_err_drp_udp;
235 __le64 rmac_xgmii_err_sym;
253 __le32 rmac_pause_cnt;
254 __le64 rmac_xgmii_data_err_cnt;
255 __le64 rmac_xgmii_ctrl_err_cnt;
257 __le32 rmac_accepted_ip;
259 /* PCI/PCI-X Read transaction statistics. */
260 __le32 new_rd_req_cnt;
263 __le32 new_rd_req_rtry_cnt;
265 /* PCI/PCI-X Write/Read transaction statistics. */
267 __le32 wr_rtry_rd_ack_cnt;
268 __le32 new_wr_req_rtry_cnt;
269 __le32 new_wr_req_cnt;
273 /* PCI/PCI-X Write / DMA Transaction statistics. */
275 __le32 rd_rtry_wr_ack_cnt;
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;
300 __le32 tpa_parse_failure;
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;
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;
338 __le32 rmac_ingm_full_discard;
340 __le32 rmac_accepted_ip_oflow;
342 __le32 link_fault_cnt;
344 struct swStat sw_stat;
345 struct xpakStat xpak_stat;
348 /* Default value for 'vlan_strip_tag' configuration parameter */
349 #define NO_STRIP_IN_PROMISC 2
352 * Structures representing different init time configuration
353 * parameters of the NIC.
356 #define MAX_TX_FIFOS 8
357 #define MAX_RX_RINGS 8
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
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)
369 /* FIFO mappings for all possible number of fifos configured */
370 static 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},
381 static u16 fifo_selector[MAX_TX_FIFOS] = {0, 1, 3, 3, 7, 7, 7, 7};
383 /* Maintains Per FIFO related information. */
384 struct 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 */
399 #define NO_SNOOP_TXD 0x01
400 #define NO_SNOOP_TXD_BUFFER 0x02
404 /* Maintains per Ring related information */
405 struct 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 */
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
424 #define NO_SNOOP_RXD 0x01
425 #define NO_SNOOP_RXD_BUFFER 0x02
428 /* This structure provides contains values of the tunable parameters
431 struct config_param {
433 u32 tx_fifo_num; /*Number of Tx FIFOs */
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
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 */
450 /* Specifies if Tx Intr is UTILZ or PER_LIST type. */
453 u32 rx_ring_num; /*Number of receive rings */
454 #define MAX_RX_BLOCKS_PER_RING 150
456 struct rx_ring_config rx_cfg[MAX_RX_RINGS]; /*Per-Rx Ring config */
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
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)
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 */
477 /* Structure representing MAC Addrs */
479 u8 mac_addr[ETH_ALEN];
482 /* Structure that represent every FIFO element in the BAR1
485 struct TxFIFO_element {
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)
498 /* Tx descriptor structure */
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)
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)
529 u64 Host_Control; /* reserved for host */
532 /* Structure to hold the phy and virt addr of every TxDL. */
533 struct list_info_hold {
534 dma_addr_t list_phy_addr;
535 void *list_virt_addr;
538 /* Rx descriptor structure for 1 buffer mode */
540 u64 Host_Control; /* reserved for host */
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)
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)
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)
566 /* Rx descriptor structure for 1 buffer mode */
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)
576 /* Rx descriptor structure for 3 or 2 buffer mode */
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)
602 /* Structure that represents the Rx descriptor block which contains
603 * 128 Rx descriptors.
606 #define MAX_RXDS_PER_BLOCK_1 127
607 struct RxD1 rxd[MAX_RXDS_PER_BLOCK_1];
610 #define END_OF_BLOCK 0xFEFFFFFFFFFFFFFFULL
611 u64 reserved_1; /* 0xFEFFFFFFFFFFFFFF to mark last
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
619 #define SIZE_OF_BLOCK 4096
621 #define RXD_MODE_1 0 /* One Buffer mode */
622 #define RXD_MODE_3B 1 /* Two Buffer mode */
624 /* Structure to hold virtual addresses of Buf0 and Buf1 in
633 /* Structure which stores all the MAC control parameters */
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.
639 struct rx_curr_get_info {
645 struct rx_curr_put_info {
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.
655 struct tx_curr_get_info {
660 struct tx_curr_put_info {
670 /* Structure that holds the Phy and virt addresses of the Blocks */
671 struct rx_block_info {
672 void *block_virt_addr;
673 dma_addr_t block_dma_addr;
674 struct rxd_info *rxds;
677 /* Data structure to represent a LRO session */
679 struct sk_buff *parent;
680 struct sk_buff *last_frag;
695 } ____cacheline_aligned;
697 /* Ring specific structure */
699 /* The ring number */
702 /* per-ring buffer counter */
705 #define MAX_LRO_SESSIONS 32
706 struct lro lro0_n[MAX_LRO_SESSIONS];
709 /* copy of sp->rxd_mode flag */
712 /* Number of rxds per block for the rxd_mode */
715 /* copy of sp pointer */
716 struct s2io_nic *nic;
718 /* copy of sp->dev pointer */
719 struct net_device *dev;
721 /* copy of sp->pdev pointer */
722 struct pci_dev *pdev;
724 /* Per ring napi struct */
725 struct napi_struct napi;
727 unsigned long interrupt_count;
730 * Place holders for the virtual and physical addresses of
733 struct rx_block_info rx_blocks[MAX_RX_BLOCKS_PER_RING];
738 * Put pointer info which indictes which RxD has to be replenished
741 struct rx_curr_put_info rx_curr_put_info;
744 * Get pointer info which indictes which is the last RxD that was
745 * processed by the driver.
747 struct rx_curr_get_info rx_curr_get_info;
749 /* interface MTU value */
752 /* Buffer Address store. */
755 /* per-Ring statistics */
756 unsigned long rx_packets;
757 unsigned long rx_bytes;
758 } ____cacheline_aligned;
760 /* Fifo specific structure */
765 /* Maximum TxDs per TxDL */
768 /* Place holder of all the TX List's Phy and Virt addresses. */
769 struct list_info_hold *list_info;
772 * Current offset within the tx FIFO where driver would write
775 struct tx_curr_put_info tx_curr_put_info;
778 * Current offset within tx FIFO from where the driver would start freeing
781 struct tx_curr_get_info tx_curr_get_info;
782 #define FIFO_QUEUE_START 0
783 #define FIFO_QUEUE_STOP 1
786 /* copy of sp->dev pointer */
787 struct net_device *dev;
789 /* copy of multiq status */
795 /* Per fifo UFO in band structure */
798 struct s2io_nic *nic;
799 } ____cacheline_aligned;
801 /* Information related to the Tx and Rx FIFOs and Rings of Xena
802 * is maintained in this structure.
806 /* logical pointer of start of each Tx FIFO */
807 struct TxFIFO_element __iomem *tx_FIFO_start[MAX_TX_FIFOS];
809 /* Fifo specific structure */
810 struct fifo_info fifos[MAX_TX_FIFOS];
812 /* Save virtual address of TxD page with zero DMA addr(if any) */
813 void *zerodma_virt_addr;
816 /* Ring specific structure */
817 struct ring_info rings[MAX_RX_RINGS];
820 u16 mc_pause_threshold_q0q3;
821 u16 mc_pause_threshold_q4q7;
823 void *stats_mem; /* orignal pointer to allocated mem */
824 dma_addr_t stats_mem_phy; /* Physical address of the stat block */
826 struct stat_block *stats_info; /* Logical address of the stat block */
829 /* structure representing the user defined MAC addresses */
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
842 * Structure to keep track of the MSI-X vectors and the corresponding
843 * argument registered against each vector
845 #define MAX_REQUESTED_MSI_X 9
846 struct s2io_msix_entry
853 #define MSIX_ALARM_TYPE 1
854 #define MSIX_RING_TYPE 2
857 #define MSIX_REGISTERED_SUCCESS 0xAA
860 struct msix_info_st {
865 /* These flags represent the devices temporary state */
866 enum s2io_device_state_t
868 __S2IO_STATE_LINK_TASK=0,
872 /* Structure representing one instance of the NIC */
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.
880 struct net_device *dev;
881 struct mac_info mac_control;
882 struct config_param config;
883 struct pci_dev *pdev;
886 #define MAX_MAC_SUPPORTED 16
887 #define MAX_SUPPORTED_MULTICASTS MAX_MAC_SUPPORTED
889 struct mac_addr def_mac_addr[256];
891 struct net_device_stats stats;
893 int device_enabled_once;
897 /* Timer that handles I/O errors/exceptions */
898 struct timer_list alarm_timer;
900 /* Space to back up the PCI config space */
901 u32 config_space[256 / sizeof(u32)];
906 #define MAX_ADDRS_SUPPORTED 64
909 struct usr_addr usr_addrs[256];
915 /* Id timer, used to blink NIC to physically identify NIC. */
916 struct timer_list id_timer;
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.
922 struct work_struct rst_timer_task;
923 struct work_struct set_link_task;
925 /* Flag that can be used to turn on or turn off the Rx checksum
930 /* Below variables are used for fifo selection to transmit a packet */
931 u16 fifo_selector[MAX_TX_FIFOS];
933 /* Total fifos for tcp packets */
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)
946 * Beginning index of fifo for all other packets
947 * Value will be equal to (tx_fifo_num - FIFO_OTHER_MAX_NUM)
951 struct napi_struct napi;
952 /* after blink, the adapter must be restored with original
957 /* Last known link state. */
963 unsigned long long start_time;
964 struct vlan_group *vlgrp;
965 #define MSIX_FLG 0xA5
967 struct msix_entry *entries;
969 wait_queue_head_t msi_wait;
970 struct s2io_msix_entry *s2io_entries;
971 char desc[MAX_REQUESTED_MSI_X][25];
973 int avail_msix_vectors; /* No. of MSI-X vectors granted by system */
975 struct msix_info_st msix_info[0x3f];
977 #define XFRAME_I_DEVICE 1
978 #define XFRAME_II_DEVICE 2
981 unsigned long clubbed_frms_cnt;
982 unsigned long sending_both;
984 u16 lro_max_aggr_per_sess;
985 volatile unsigned long state;
986 u64 general_int_mask;
988 #define VPD_STRING_LEN 80
989 u8 product_name[VPD_STRING_LEN];
990 u8 serial_num[VPD_STRING_LEN];
993 #define RESET_ERROR 1;
996 /* OS related system calls */
998 static inline u64 readq(void __iomem *addr)
1001 ret = readl(addr + 4);
1010 static inline void writeq(u64 val, void __iomem *addr)
1012 writel((u32) (val), addr);
1013 writel((u32) (val >> 32), (addr + 4));
1018 * Some registers have to be written in a particular order to
1019 * expect correct hardware operation. The macro SPECIAL_REG_WRITE
1020 * is used to perform such ordered writes. Defines UF (Upper First)
1021 * and LF (Lower First) will be used to specify the required write order.
1025 static inline void SPECIAL_REG_WRITE(u64 val, void __iomem *addr, int order)
1030 writel((u32) (val), addr);
1032 writel((u32) (val >> 32), (addr + 4));
1033 ret = readl(addr + 4);
1035 writel((u32) (val >> 32), (addr + 4));
1036 ret = readl(addr + 4);
1037 writel((u32) (val), addr);
1042 /* Interrupt related values of Xena */
1044 #define ENABLE_INTRS 1
1045 #define DISABLE_INTRS 2
1047 /* Highest level interrupt blocks */
1048 #define TX_PIC_INTR (0x0001<<0)
1049 #define TX_DMA_INTR (0x0001<<1)
1050 #define TX_MAC_INTR (0x0001<<2)
1051 #define TX_XGXS_INTR (0x0001<<3)
1052 #define TX_TRAFFIC_INTR (0x0001<<4)
1053 #define RX_PIC_INTR (0x0001<<5)
1054 #define RX_DMA_INTR (0x0001<<6)
1055 #define RX_MAC_INTR (0x0001<<7)
1056 #define RX_XGXS_INTR (0x0001<<8)
1057 #define RX_TRAFFIC_INTR (0x0001<<9)
1058 #define MC_INTR (0x0001<<10)
1059 #define ENA_ALL_INTRS ( TX_PIC_INTR | \
1071 /* Interrupt masks for the general interrupt mask register */
1072 #define DISABLE_ALL_INTRS 0xFFFFFFFFFFFFFFFFULL
1074 #define TXPIC_INT_M s2BIT(0)
1075 #define TXDMA_INT_M s2BIT(1)
1076 #define TXMAC_INT_M s2BIT(2)
1077 #define TXXGXS_INT_M s2BIT(3)
1078 #define TXTRAFFIC_INT_M s2BIT(8)
1079 #define PIC_RX_INT_M s2BIT(32)
1080 #define RXDMA_INT_M s2BIT(33)
1081 #define RXMAC_INT_M s2BIT(34)
1082 #define MC_INT_M s2BIT(35)
1083 #define RXXGXS_INT_M s2BIT(36)
1084 #define RXTRAFFIC_INT_M s2BIT(40)
1086 /* PIC level Interrupts TODO*/
1088 /* DMA level Inressupts */
1089 #define TXDMA_PFC_INT_M s2BIT(0)
1090 #define TXDMA_PCC_INT_M s2BIT(2)
1092 /* PFC block interrupts */
1093 #define PFC_MISC_ERR_1 s2BIT(0) /* Interrupt to indicate FIFO full */
1095 /* PCC block interrupts. */
1096 #define PCC_FB_ECC_ERR vBIT(0xff, 16, 8) /* Interrupt to indicate
1097 PCC_FB_ECC Error. */
1099 #define RXD_GET_VLAN_TAG(Control_2) (u16)(Control_2 & MASK_VLAN_TAG)
1101 * Prototype declaration.
1103 static int __devinit s2io_init_nic(struct pci_dev *pdev,
1104 const struct pci_device_id *pre);
1105 static void __devexit s2io_rem_nic(struct pci_dev *pdev);
1106 static int init_shared_mem(struct s2io_nic *sp);
1107 static void free_shared_mem(struct s2io_nic *sp);
1108 static int init_nic(struct s2io_nic *nic);
1109 static int rx_intr_handler(struct ring_info *ring_data, int budget);
1110 static void s2io_txpic_intr_handle(struct s2io_nic *sp);
1111 static void tx_intr_handler(struct fifo_info *fifo_data);
1112 static void s2io_handle_errors(void * dev_id);
1114 static int s2io_starter(void);
1115 static void s2io_closer(void);
1116 static void s2io_tx_watchdog(struct net_device *dev);
1117 static void s2io_set_multicast(struct net_device *dev);
1118 static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp);
1119 static void s2io_link(struct s2io_nic * sp, int link);
1120 static void s2io_reset(struct s2io_nic * sp);
1121 static int s2io_poll_msix(struct napi_struct *napi, int budget);
1122 static int s2io_poll_inta(struct napi_struct *napi, int budget);
1123 static void s2io_init_pci(struct s2io_nic * sp);
1124 static int do_s2io_prog_unicast(struct net_device *dev, u8 *addr);
1125 static void s2io_alarm_handle(unsigned long data);
1127 s2io_msix_ring_handle(int irq, void *dev_id);
1129 s2io_msix_fifo_handle(int irq, void *dev_id);
1130 static irqreturn_t s2io_isr(int irq, void *dev_id);
1131 static int verify_xena_quiescence(struct s2io_nic *sp);
1132 static const struct ethtool_ops netdev_ethtool_ops;
1133 static void s2io_set_link(struct work_struct *work);
1134 static int s2io_set_swapper(struct s2io_nic * sp);
1135 static void s2io_card_down(struct s2io_nic *nic);
1136 static int s2io_card_up(struct s2io_nic *nic);
1137 static int wait_for_cmd_complete(void __iomem *addr, u64 busy_bit,
1139 static int s2io_add_isr(struct s2io_nic * sp);
1140 static void s2io_rem_isr(struct s2io_nic * sp);
1142 static void restore_xmsi_data(struct s2io_nic *nic);
1143 static void do_s2io_store_unicast_mc(struct s2io_nic *sp);
1144 static void do_s2io_restore_unicast_mc(struct s2io_nic *sp);
1145 static u64 do_s2io_read_unicast_mc(struct s2io_nic *sp, int offset);
1146 static int do_s2io_add_mc(struct s2io_nic *sp, u8 *addr);
1147 static int do_s2io_add_mac(struct s2io_nic *sp, u64 addr, int offset);
1148 static int do_s2io_delete_unicast_mc(struct s2io_nic *sp, u64 addr);
1150 static int s2io_club_tcp_session(struct ring_info *ring_data, u8 *buffer,
1151 u8 **tcp, u32 *tcp_len, struct lro **lro, struct RxD_t *rxdp,
1152 struct s2io_nic *sp);
1153 static void clear_lro_session(struct lro *lro);
1154 static void queue_rx_frame(struct sk_buff *skb, u16 vlan_tag);
1155 static void update_L3L4_header(struct s2io_nic *sp, struct lro *lro);
1156 static void lro_append_pkt(struct s2io_nic *sp, struct lro *lro,
1157 struct sk_buff *skb, u32 tcp_len);
1158 static int rts_ds_steer(struct s2io_nic *nic, u8 ds_codepoint, u8 ring);
1160 static pci_ers_result_t s2io_io_error_detected(struct pci_dev *pdev,
1161 pci_channel_state_t state);
1162 static pci_ers_result_t s2io_io_slot_reset(struct pci_dev *pdev);
1163 static void s2io_io_resume(struct pci_dev *pdev);
1165 #define s2io_tcp_mss(skb) skb_shinfo(skb)->gso_size
1166 #define s2io_udp_mss(skb) skb_shinfo(skb)->gso_size
1167 #define s2io_offload_type(skb) skb_shinfo(skb)->gso_type
1169 #define S2IO_PARM_INT(X, def_val) \
1170 static unsigned int X = def_val;\
1171 module_param(X , uint, 0);
1173 #endif /* _S2IO_H */