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 BIT(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_MAX_PCI_CONFIG_SPACE_REINIT 100
35 #define S2IO_BIT_RESET 1
36 #define S2IO_BIT_SET 2
37 #define CHECKBIT(value, nbit) (value & (1 << nbit))
39 /* Maximum time to flicker LED when asked to identify NIC using ethtool */
40 #define MAX_FLICKER_TIME 60000 /* 60 Secs */
42 /* Maximum outstanding splits to be configured into xena. */
44 XENA_ONE_SPLIT_TRANSACTION = 0,
45 XENA_TWO_SPLIT_TRANSACTION = 1,
46 XENA_THREE_SPLIT_TRANSACTION = 2,
47 XENA_FOUR_SPLIT_TRANSACTION = 3,
48 XENA_EIGHT_SPLIT_TRANSACTION = 4,
49 XENA_TWELVE_SPLIT_TRANSACTION = 5,
50 XENA_SIXTEEN_SPLIT_TRANSACTION = 6,
51 XENA_THIRTYTWO_SPLIT_TRANSACTION = 7
53 #define XENA_MAX_OUTSTANDING_SPLITS(n) (n << 4)
55 /* OS concerned variables and constants */
56 #define WATCH_DOG_TIMEOUT 15*HZ
58 #define ALIGN_SIZE 127
59 #define PCIX_COMMAND_REGISTER 0x62
62 * Debug related variables.
64 /* different debug levels. */
71 /* Global variable that defines the present debug level of the driver. */
72 static int debug_level = ERR_DBG;
74 /* DEBUG message print. */
75 #define DBG_PRINT(dbg_level, args...) if(!(debug_level<dbg_level)) printk(args)
77 /* Protocol assist features of the NIC */
78 #define L3_CKSUM_OK 0xFFFF
79 #define L4_CKSUM_OK 0xFFFF
80 #define S2IO_JUMBO_SIZE 9600
82 /* Driver statistics maintained by driver */
84 unsigned long long single_ecc_errs;
85 unsigned long long double_ecc_errs;
86 unsigned long long parity_err_cnt;
87 unsigned long long serious_err_cnt;
88 unsigned long long soft_reset_cnt;
89 unsigned long long fifo_full_cnt;
90 unsigned long long ring_full_cnt;
92 unsigned long long clubbed_frms_cnt;
93 unsigned long long sending_both;
94 unsigned long long outof_sequence_pkts;
95 unsigned long long flush_max_pkts;
96 unsigned long long sum_avg_pkts_aggregated;
97 unsigned long long num_aggregations;
98 /* Other statistics */
99 unsigned long long mem_alloc_fail_cnt;
100 unsigned long long watchdog_timer_cnt;
101 unsigned long long mem_allocated;
102 unsigned long long mem_freed;
103 unsigned long long link_up_cnt;
104 unsigned long long link_down_cnt;
105 unsigned long long link_up_time;
106 unsigned long long link_down_time;
108 /* Transfer Code statistics */
109 unsigned long long tx_buf_abort_cnt;
110 unsigned long long tx_desc_abort_cnt;
111 unsigned long long tx_parity_err_cnt;
112 unsigned long long tx_link_loss_cnt;
113 unsigned long long tx_list_proc_err_cnt;
115 unsigned long long rx_parity_err_cnt;
116 unsigned long long rx_abort_cnt;
117 unsigned long long rx_parity_abort_cnt;
118 unsigned long long rx_rda_fail_cnt;
119 unsigned long long rx_unkn_prot_cnt;
120 unsigned long long rx_fcs_err_cnt;
121 unsigned long long rx_buf_size_err_cnt;
122 unsigned long long rx_rxd_corrupt_cnt;
123 unsigned long long rx_unkn_err_cnt;
126 /* Xpak releated alarm and warnings */
128 u64 alarm_transceiver_temp_high;
129 u64 alarm_transceiver_temp_low;
130 u64 alarm_laser_bias_current_high;
131 u64 alarm_laser_bias_current_low;
132 u64 alarm_laser_output_power_high;
133 u64 alarm_laser_output_power_low;
134 u64 warn_transceiver_temp_high;
135 u64 warn_transceiver_temp_low;
136 u64 warn_laser_bias_current_high;
137 u64 warn_laser_bias_current_low;
138 u64 warn_laser_output_power_high;
139 u64 warn_laser_output_power_low;
141 u32 xpak_timer_count;
145 /* The statistics block of Xena */
147 /* Tx MAC statistics counters. */
148 __le32 tmac_data_octets;
150 __le64 tmac_drop_frms;
151 __le32 tmac_bcst_frms;
152 __le32 tmac_mcst_frms;
153 __le64 tmac_pause_ctrl_frms;
154 __le32 tmac_ucst_frms;
155 __le32 tmac_ttl_octets;
156 __le32 tmac_any_err_frms;
157 __le32 tmac_nucst_frms;
158 __le64 tmac_ttl_less_fb_octets;
159 __le64 tmac_vld_ip_octets;
168 /* Rx MAC Statistics counters. */
169 __le32 rmac_data_octets;
170 __le32 rmac_vld_frms;
171 __le64 rmac_fcs_err_frms;
172 __le64 rmac_drop_frms;
173 __le32 rmac_vld_bcst_frms;
174 __le32 rmac_vld_mcst_frms;
175 __le32 rmac_out_rng_len_err_frms;
176 __le32 rmac_in_rng_len_err_frms;
177 __le64 rmac_long_frms;
178 __le64 rmac_pause_ctrl_frms;
179 __le64 rmac_unsup_ctrl_frms;
180 __le32 rmac_accepted_ucst_frms;
181 __le32 rmac_ttl_octets;
182 __le32 rmac_discarded_frms;
183 __le32 rmac_accepted_nucst_frms;
185 __le32 rmac_drop_events;
186 __le64 rmac_ttl_less_fb_octets;
187 __le64 rmac_ttl_frms;
189 __le32 rmac_usized_frms;
191 __le32 rmac_frag_frms;
192 __le32 rmac_osized_frms;
194 __le32 rmac_jabber_frms;
195 __le64 rmac_ttl_64_frms;
196 __le64 rmac_ttl_65_127_frms;
198 __le64 rmac_ttl_128_255_frms;
199 __le64 rmac_ttl_256_511_frms;
201 __le64 rmac_ttl_512_1023_frms;
202 __le64 rmac_ttl_1024_1518_frms;
205 __le64 rmac_ip_octets;
207 __le32 rmac_hdr_err_ip;
211 __le32 rmac_err_drp_udp;
213 __le64 rmac_xgmii_err_sym;
231 __le32 rmac_pause_cnt;
232 __le64 rmac_xgmii_data_err_cnt;
233 __le64 rmac_xgmii_ctrl_err_cnt;
235 __le32 rmac_accepted_ip;
237 /* PCI/PCI-X Read transaction statistics. */
238 __le32 new_rd_req_cnt;
241 __le32 new_rd_req_rtry_cnt;
243 /* PCI/PCI-X Write/Read transaction statistics. */
245 __le32 wr_rtry_rd_ack_cnt;
246 __le32 new_wr_req_rtry_cnt;
247 __le32 new_wr_req_cnt;
251 /* PCI/PCI-X Write / DMA Transaction statistics. */
253 __le32 rd_rtry_wr_ack_cnt;
261 /* Tx MAC statistics overflow counters. */
262 __le32 tmac_data_octets_oflow;
263 __le32 tmac_frms_oflow;
264 __le32 tmac_bcst_frms_oflow;
265 __le32 tmac_mcst_frms_oflow;
266 __le32 tmac_ucst_frms_oflow;
267 __le32 tmac_ttl_octets_oflow;
268 __le32 tmac_any_err_frms_oflow;
269 __le32 tmac_nucst_frms_oflow;
270 __le64 tmac_vlan_frms;
271 __le32 tmac_drop_ip_oflow;
272 __le32 tmac_vld_ip_oflow;
273 __le32 tmac_rst_tcp_oflow;
274 __le32 tmac_icmp_oflow;
275 __le32 tpa_unknown_protocol;
276 __le32 tmac_udp_oflow;
278 __le32 tpa_parse_failure;
280 /* Rx MAC Statistics overflow counters. */
281 __le32 rmac_data_octets_oflow;
282 __le32 rmac_vld_frms_oflow;
283 __le32 rmac_vld_bcst_frms_oflow;
284 __le32 rmac_vld_mcst_frms_oflow;
285 __le32 rmac_accepted_ucst_frms_oflow;
286 __le32 rmac_ttl_octets_oflow;
287 __le32 rmac_discarded_frms_oflow;
288 __le32 rmac_accepted_nucst_frms_oflow;
289 __le32 rmac_usized_frms_oflow;
290 __le32 rmac_drop_events_oflow;
291 __le32 rmac_frag_frms_oflow;
292 __le32 rmac_osized_frms_oflow;
293 __le32 rmac_ip_oflow;
294 __le32 rmac_jabber_frms_oflow;
295 __le32 rmac_icmp_oflow;
296 __le32 rmac_drop_ip_oflow;
297 __le32 rmac_err_drp_udp_oflow;
298 __le32 rmac_udp_oflow;
300 __le32 rmac_pause_cnt_oflow;
301 __le64 rmac_ttl_1519_4095_frms;
302 __le64 rmac_ttl_4096_8191_frms;
303 __le64 rmac_ttl_8192_max_frms;
304 __le64 rmac_ttl_gt_max_frms;
305 __le64 rmac_osized_alt_frms;
306 __le64 rmac_jabber_alt_frms;
307 __le64 rmac_gt_max_alt_frms;
308 __le64 rmac_vlan_frms;
309 __le32 rmac_len_discard;
310 __le32 rmac_fcs_discard;
311 __le32 rmac_pf_discard;
312 __le32 rmac_da_discard;
313 __le32 rmac_red_discard;
314 __le32 rmac_rts_discard;
316 __le32 rmac_ingm_full_discard;
318 __le32 rmac_accepted_ip_oflow;
320 __le32 link_fault_cnt;
322 struct swStat sw_stat;
323 struct xpakStat xpak_stat;
326 /* Default value for 'vlan_strip_tag' configuration parameter */
327 #define NO_STRIP_IN_PROMISC 2
330 * Structures representing different init time configuration
331 * parameters of the NIC.
334 #define MAX_TX_FIFOS 8
335 #define MAX_RX_RINGS 8
337 #define MAX_RX_DESC_1 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 127 )
338 #define MAX_RX_DESC_2 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 85 )
339 #define MAX_RX_DESC_3 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 85 )
340 #define MAX_TX_DESC (MAX_AVAILABLE_TXDS)
342 /* FIFO mappings for all possible number of fifos configured */
343 static int fifo_map[][MAX_TX_FIFOS] = {
344 {0, 0, 0, 0, 0, 0, 0, 0},
345 {0, 0, 0, 0, 1, 1, 1, 1},
346 {0, 0, 0, 1, 1, 1, 2, 2},
347 {0, 0, 1, 1, 2, 2, 3, 3},
348 {0, 0, 1, 1, 2, 2, 3, 4},
349 {0, 0, 1, 1, 2, 3, 4, 5},
350 {0, 0, 1, 2, 3, 4, 5, 6},
351 {0, 1, 2, 3, 4, 5, 6, 7},
354 /* Maintains Per FIFO related information. */
355 struct tx_fifo_config {
356 #define MAX_AVAILABLE_TXDS 8192
357 u32 fifo_len; /* specifies len of FIFO upto 8192, ie no of TxDLs */
358 /* Priority definition */
359 #define TX_FIFO_PRI_0 0 /*Highest */
360 #define TX_FIFO_PRI_1 1
361 #define TX_FIFO_PRI_2 2
362 #define TX_FIFO_PRI_3 3
363 #define TX_FIFO_PRI_4 4
364 #define TX_FIFO_PRI_5 5
365 #define TX_FIFO_PRI_6 6
366 #define TX_FIFO_PRI_7 7 /*lowest */
367 u8 fifo_priority; /* specifies pointer level for FIFO */
368 /* user should not set twos fifos with same pri */
370 #define NO_SNOOP_TXD 0x01
371 #define NO_SNOOP_TXD_BUFFER 0x02
375 /* Maintains per Ring related information */
376 struct rx_ring_config {
377 u32 num_rxd; /*No of RxDs per Rx Ring */
378 #define RX_RING_PRI_0 0 /* highest */
379 #define RX_RING_PRI_1 1
380 #define RX_RING_PRI_2 2
381 #define RX_RING_PRI_3 3
382 #define RX_RING_PRI_4 4
383 #define RX_RING_PRI_5 5
384 #define RX_RING_PRI_6 6
385 #define RX_RING_PRI_7 7 /* lowest */
387 u8 ring_priority; /*Specifies service priority of ring */
388 /* OSM should not set any two rings with same priority */
389 u8 ring_org; /*Organization of ring */
390 #define RING_ORG_BUFF1 0x01
391 #define RX_RING_ORG_BUFF3 0x03
392 #define RX_RING_ORG_BUFF5 0x05
395 #define NO_SNOOP_RXD 0x01
396 #define NO_SNOOP_RXD_BUFFER 0x02
399 /* This structure provides contains values of the tunable parameters
402 struct config_param {
404 u32 tx_fifo_num; /*Number of Tx FIFOs */
406 u8 fifo_mapping[MAX_TX_FIFOS];
407 struct tx_fifo_config tx_cfg[MAX_TX_FIFOS]; /*Per-Tx FIFO config */
408 u32 max_txds; /*Max no. of Tx buffer descriptor per TxDL */
410 /* Specifies if Tx Intr is UTILZ or PER_LIST type. */
413 u32 rx_ring_num; /*Number of receive rings */
414 #define MAX_RX_BLOCKS_PER_RING 150
416 struct rx_ring_config rx_cfg[MAX_RX_RINGS]; /*Per-Rx Ring config */
417 u8 bimodal; /*Flag for setting bimodal interrupts*/
419 #define HEADER_ETHERNET_II_802_3_SIZE 14
420 #define HEADER_802_2_SIZE 3
421 #define HEADER_SNAP_SIZE 5
422 #define HEADER_VLAN_SIZE 4
425 #define MAX_PYLD 1500
426 #define MAX_MTU (MAX_PYLD+18)
427 #define MAX_MTU_VLAN (MAX_PYLD+22)
428 #define MAX_PYLD_JUMBO 9600
429 #define MAX_MTU_JUMBO (MAX_PYLD_JUMBO+18)
430 #define MAX_MTU_JUMBO_VLAN (MAX_PYLD_JUMBO+22)
434 /* Structure representing MAC Addrs */
436 u8 mac_addr[ETH_ALEN];
439 /* Structure that represent every FIFO element in the BAR1
442 struct TxFIFO_element {
446 #define TX_FIFO_LAST_TXD_NUM( val) vBIT(val,0,8)
447 #define TX_FIFO_FIRST_LIST BIT(14)
448 #define TX_FIFO_LAST_LIST BIT(15)
449 #define TX_FIFO_FIRSTNLAST_LIST vBIT(3,14,2)
450 #define TX_FIFO_SPECIAL_FUNC BIT(23)
451 #define TX_FIFO_DS_NO_SNOOP BIT(31)
452 #define TX_FIFO_BUFF_NO_SNOOP BIT(30)
455 /* Tx descriptor structure */
459 #define TXD_LIST_OWN_XENA BIT(7)
460 #define TXD_T_CODE (BIT(12)|BIT(13)|BIT(14)|BIT(15))
461 #define TXD_T_CODE_OK(val) (|(val & TXD_T_CODE))
462 #define GET_TXD_T_CODE(val) ((val & TXD_T_CODE)<<12)
463 #define TXD_GATHER_CODE (BIT(22) | BIT(23))
464 #define TXD_GATHER_CODE_FIRST BIT(22)
465 #define TXD_GATHER_CODE_LAST BIT(23)
466 #define TXD_TCP_LSO_EN BIT(30)
467 #define TXD_UDP_COF_EN BIT(31)
468 #define TXD_UFO_EN BIT(31) | BIT(30)
469 #define TXD_TCP_LSO_MSS(val) vBIT(val,34,14)
470 #define TXD_UFO_MSS(val) vBIT(val,34,14)
471 #define TXD_BUFFER0_SIZE(val) vBIT(val,48,16)
474 #define TXD_TX_CKO_CONTROL (BIT(5)|BIT(6)|BIT(7))
475 #define TXD_TX_CKO_IPV4_EN BIT(5)
476 #define TXD_TX_CKO_TCP_EN BIT(6)
477 #define TXD_TX_CKO_UDP_EN BIT(7)
478 #define TXD_VLAN_ENABLE BIT(15)
479 #define TXD_VLAN_TAG(val) vBIT(val,16,16)
480 #define TXD_INT_NUMBER(val) vBIT(val,34,6)
481 #define TXD_INT_TYPE_PER_LIST BIT(47)
482 #define TXD_INT_TYPE_UTILZ BIT(46)
483 #define TXD_SET_MARKER vBIT(0x6,0,4)
486 u64 Host_Control; /* reserved for host */
489 /* Structure to hold the phy and virt addr of every TxDL. */
490 struct list_info_hold {
491 dma_addr_t list_phy_addr;
492 void *list_virt_addr;
495 /* Rx descriptor structure for 1 buffer mode */
497 u64 Host_Control; /* reserved for host */
499 #define RXD_OWN_XENA BIT(7)
500 #define RXD_T_CODE (BIT(12)|BIT(13)|BIT(14)|BIT(15))
501 #define RXD_FRAME_PROTO vBIT(0xFFFF,24,8)
502 #define RXD_FRAME_PROTO_IPV4 BIT(27)
503 #define RXD_FRAME_PROTO_IPV6 BIT(28)
504 #define RXD_FRAME_IP_FRAG BIT(29)
505 #define RXD_FRAME_PROTO_TCP BIT(30)
506 #define RXD_FRAME_PROTO_UDP BIT(31)
507 #define TCP_OR_UDP_FRAME (RXD_FRAME_PROTO_TCP | RXD_FRAME_PROTO_UDP)
508 #define RXD_GET_L3_CKSUM(val) ((u16)(val>> 16) & 0xFFFF)
509 #define RXD_GET_L4_CKSUM(val) ((u16)(val) & 0xFFFF)
512 #define THE_RXD_MARK 0x3
513 #define SET_RXD_MARKER vBIT(THE_RXD_MARK, 0, 2)
514 #define GET_RXD_MARKER(ctrl) ((ctrl & SET_RXD_MARKER) >> 62)
516 #define MASK_VLAN_TAG vBIT(0xFFFF,48,16)
517 #define SET_VLAN_TAG(val) vBIT(val,48,16)
518 #define SET_NUM_TAG(val) vBIT(val,16,32)
522 /* Rx descriptor structure for 1 buffer mode */
526 #define MASK_BUFFER0_SIZE_1 vBIT(0x3FFF,2,14)
527 #define SET_BUFFER0_SIZE_1(val) vBIT(val,2,14)
528 #define RXD_GET_BUFFER0_SIZE_1(_Control_2) \
529 (u16)((_Control_2 & MASK_BUFFER0_SIZE_1) >> 48)
532 /* Rx descriptor structure for 3 or 2 buffer mode */
537 #define MASK_BUFFER0_SIZE_3 vBIT(0xFF,2,14)
538 #define MASK_BUFFER1_SIZE_3 vBIT(0xFFFF,16,16)
539 #define MASK_BUFFER2_SIZE_3 vBIT(0xFFFF,32,16)
540 #define SET_BUFFER0_SIZE_3(val) vBIT(val,8,8)
541 #define SET_BUFFER1_SIZE_3(val) vBIT(val,16,16)
542 #define SET_BUFFER2_SIZE_3(val) vBIT(val,32,16)
543 #define RXD_GET_BUFFER0_SIZE_3(Control_2) \
544 (u8)((Control_2 & MASK_BUFFER0_SIZE_3) >> 48)
545 #define RXD_GET_BUFFER1_SIZE_3(Control_2) \
546 (u16)((Control_2 & MASK_BUFFER1_SIZE_3) >> 32)
547 #define RXD_GET_BUFFER2_SIZE_3(Control_2) \
548 (u16)((Control_2 & MASK_BUFFER2_SIZE_3) >> 16)
558 /* Structure that represents the Rx descriptor block which contains
559 * 128 Rx descriptors.
562 #define MAX_RXDS_PER_BLOCK_1 127
563 struct RxD1 rxd[MAX_RXDS_PER_BLOCK_1];
566 #define END_OF_BLOCK 0xFEFFFFFFFFFFFFFFULL
567 u64 reserved_1; /* 0xFEFFFFFFFFFFFFFF to mark last
569 u64 reserved_2_pNext_RxD_block; /* Logical ptr to next */
570 u64 pNext_RxD_Blk_physical; /* Buff0_ptr.In a 32 bit arch
571 * the upper 32 bits should
575 #define SIZE_OF_BLOCK 4096
577 #define RXD_MODE_1 0 /* One Buffer mode */
578 #define RXD_MODE_3A 1 /* Three Buffer mode */
579 #define RXD_MODE_3B 2 /* Two Buffer mode */
581 /* Structure to hold virtual addresses of Buf0 and Buf1 in
590 /* Structure which stores all the MAC control parameters */
592 /* This structure stores the offset of the RxD in the ring
593 * from which the Rx Interrupt processor can start picking
594 * up the RxDs for processing.
596 struct rx_curr_get_info {
602 struct rx_curr_put_info {
608 /* This structure stores the offset of the TxDl in the FIFO
609 * from which the Tx Interrupt processor can start picking
610 * up the TxDLs for send complete interrupt processing.
612 struct tx_curr_get_info {
617 struct tx_curr_put_info {
627 /* Structure that holds the Phy and virt addresses of the Blocks */
628 struct rx_block_info {
629 void *block_virt_addr;
630 dma_addr_t block_dma_addr;
631 struct rxd_info *rxds;
634 /* Ring specific structure */
636 /* The ring number */
640 * Place holders for the virtual and physical addresses of
643 struct rx_block_info rx_blocks[MAX_RX_BLOCKS_PER_RING];
648 * Put pointer info which indictes which RxD has to be replenished
651 struct rx_curr_put_info rx_curr_put_info;
654 * Get pointer info which indictes which is the last RxD that was
655 * processed by the driver.
657 struct rx_curr_get_info rx_curr_get_info;
659 /* Index to the absolute position of the put pointer of Rx ring */
662 /* Buffer Address store. */
664 struct s2io_nic *nic;
667 /* Fifo specific structure */
672 /* Maximum TxDs per TxDL */
675 /* Place holder of all the TX List's Phy and Virt addresses. */
676 struct list_info_hold *list_info;
679 * Current offset within the tx FIFO where driver would write
682 struct tx_curr_put_info tx_curr_put_info;
685 * Current offset within tx FIFO from where the driver would start freeing
688 struct tx_curr_get_info tx_curr_get_info;
690 struct s2io_nic *nic;
693 /* Information related to the Tx and Rx FIFOs and Rings of Xena
694 * is maintained in this structure.
698 /* logical pointer of start of each Tx FIFO */
699 struct TxFIFO_element __iomem *tx_FIFO_start[MAX_TX_FIFOS];
701 /* Fifo specific structure */
702 struct fifo_info fifos[MAX_TX_FIFOS];
704 /* Save virtual address of TxD page with zero DMA addr(if any) */
705 void *zerodma_virt_addr;
708 /* Ring specific structure */
709 struct ring_info rings[MAX_RX_RINGS];
712 u16 mc_pause_threshold_q0q3;
713 u16 mc_pause_threshold_q4q7;
715 void *stats_mem; /* orignal pointer to allocated mem */
716 dma_addr_t stats_mem_phy; /* Physical address of the stat block */
718 struct stat_block *stats_info; /* Logical address of the stat block */
721 /* structure representing the user defined MAC addresses */
727 /* Default Tunable parameters of the NIC. */
728 #define DEFAULT_FIFO_0_LEN 4096
729 #define DEFAULT_FIFO_1_7_LEN 512
730 #define SMALL_BLK_CNT 30
731 #define LARGE_BLK_CNT 100
734 * Structure to keep track of the MSI-X vectors and the corresponding
735 * argument registered against each vector
737 #define MAX_REQUESTED_MSI_X 17
738 struct s2io_msix_entry
745 #define MSIX_FIFO_TYPE 1
746 #define MSIX_RING_TYPE 2
749 #define MSIX_REGISTERED_SUCCESS 0xAA
752 struct msix_info_st {
757 /* Data structure to represent a LRO session */
759 struct sk_buff *parent;
760 struct sk_buff *last_frag;
776 /* Structure representing one instance of the NIC */
780 * Count of packets to be processed in a given iteration, it will be indicated
781 * by the quota field of the device structure when NAPI is enabled.
784 struct net_device *dev;
785 struct mac_info mac_control;
786 struct config_param config;
787 struct pci_dev *pdev;
790 #define MAX_MAC_SUPPORTED 16
791 #define MAX_SUPPORTED_MULTICASTS MAX_MAC_SUPPORTED
793 struct mac_addr def_mac_addr[MAX_MAC_SUPPORTED];
795 struct net_device_stats stats;
797 int device_close_flag;
798 int device_enabled_once;
801 struct tasklet_struct task;
802 volatile unsigned long tasklet_status;
804 /* Timer that handles I/O errors/exceptions */
805 struct timer_list alarm_timer;
807 /* Space to back up the PCI config space */
808 u32 config_space[256 / sizeof(u32)];
810 atomic_t rx_bufs_left[MAX_RX_RINGS];
818 #define MAX_ADDRS_SUPPORTED 64
821 struct usr_addr usr_addrs[MAX_ADDRS_SUPPORTED];
827 /* Id timer, used to blink NIC to physically identify NIC. */
828 struct timer_list id_timer;
830 /* Restart timer, used to restart NIC if the device is stuck and
831 * a schedule task that will set the correct Link state once the
832 * NIC's PHY has stabilized after a state change.
834 struct work_struct rst_timer_task;
835 struct work_struct set_link_task;
837 /* Flag that can be used to turn on or turn off the Rx checksum
842 /* after blink, the adapter must be restored with original
847 /* Last known link state. */
853 unsigned long long start_time;
857 volatile unsigned long link_state;
858 struct vlan_group *vlgrp;
859 #define MSIX_FLG 0xA5
860 struct msix_entry *entries;
861 struct s2io_msix_entry *s2io_entries;
862 char desc[MAX_REQUESTED_MSI_X][25];
864 int avail_msix_vectors; /* No. of MSI-X vectors granted by system */
866 struct msix_info_st msix_info[0x3f];
868 #define XFRAME_I_DEVICE 1
869 #define XFRAME_II_DEVICE 2
872 #define MAX_LRO_SESSIONS 32
873 struct lro lro0_n[MAX_LRO_SESSIONS];
874 unsigned long clubbed_frms_cnt;
875 unsigned long sending_both;
877 u16 lro_max_aggr_per_sess;
887 #define VPD_STRING_LEN 80
888 u8 product_name[VPD_STRING_LEN];
889 u8 serial_num[VPD_STRING_LEN];
892 #define RESET_ERROR 1;
895 /* OS related system calls */
897 static inline u64 readq(void __iomem *addr)
900 ret = readl(addr + 4);
909 static inline void writeq(u64 val, void __iomem *addr)
911 writel((u32) (val), addr);
912 writel((u32) (val >> 32), (addr + 4));
917 * Some registers have to be written in a particular order to
918 * expect correct hardware operation. The macro SPECIAL_REG_WRITE
919 * is used to perform such ordered writes. Defines UF (Upper First)
920 * and LF (Lower First) will be used to specify the required write order.
924 static inline void SPECIAL_REG_WRITE(u64 val, void __iomem *addr, int order)
929 writel((u32) (val), addr);
931 writel((u32) (val >> 32), (addr + 4));
932 ret = readl(addr + 4);
934 writel((u32) (val >> 32), (addr + 4));
935 ret = readl(addr + 4);
936 writel((u32) (val), addr);
941 /* Interrupt related values of Xena */
943 #define ENABLE_INTRS 1
944 #define DISABLE_INTRS 2
946 /* Highest level interrupt blocks */
947 #define TX_PIC_INTR (0x0001<<0)
948 #define TX_DMA_INTR (0x0001<<1)
949 #define TX_MAC_INTR (0x0001<<2)
950 #define TX_XGXS_INTR (0x0001<<3)
951 #define TX_TRAFFIC_INTR (0x0001<<4)
952 #define RX_PIC_INTR (0x0001<<5)
953 #define RX_DMA_INTR (0x0001<<6)
954 #define RX_MAC_INTR (0x0001<<7)
955 #define RX_XGXS_INTR (0x0001<<8)
956 #define RX_TRAFFIC_INTR (0x0001<<9)
957 #define MC_INTR (0x0001<<10)
958 #define ENA_ALL_INTRS ( TX_PIC_INTR | \
970 /* Interrupt masks for the general interrupt mask register */
971 #define DISABLE_ALL_INTRS 0xFFFFFFFFFFFFFFFFULL
973 #define TXPIC_INT_M BIT(0)
974 #define TXDMA_INT_M BIT(1)
975 #define TXMAC_INT_M BIT(2)
976 #define TXXGXS_INT_M BIT(3)
977 #define TXTRAFFIC_INT_M BIT(8)
978 #define PIC_RX_INT_M BIT(32)
979 #define RXDMA_INT_M BIT(33)
980 #define RXMAC_INT_M BIT(34)
981 #define MC_INT_M BIT(35)
982 #define RXXGXS_INT_M BIT(36)
983 #define RXTRAFFIC_INT_M BIT(40)
985 /* PIC level Interrupts TODO*/
987 /* DMA level Inressupts */
988 #define TXDMA_PFC_INT_M BIT(0)
989 #define TXDMA_PCC_INT_M BIT(2)
991 /* PFC block interrupts */
992 #define PFC_MISC_ERR_1 BIT(0) /* Interrupt to indicate FIFO full */
994 /* PCC block interrupts. */
995 #define PCC_FB_ECC_ERR vBIT(0xff, 16, 8) /* Interrupt to indicate
998 #define RXD_GET_VLAN_TAG(Control_2) (u16)(Control_2 & MASK_VLAN_TAG)
1000 * Prototype declaration.
1002 static int __devinit s2io_init_nic(struct pci_dev *pdev,
1003 const struct pci_device_id *pre);
1004 static void __devexit s2io_rem_nic(struct pci_dev *pdev);
1005 static int init_shared_mem(struct s2io_nic *sp);
1006 static void free_shared_mem(struct s2io_nic *sp);
1007 static int init_nic(struct s2io_nic *nic);
1008 static void rx_intr_handler(struct ring_info *ring_data);
1009 static void tx_intr_handler(struct fifo_info *fifo_data);
1010 static void alarm_intr_handler(struct s2io_nic *sp);
1012 static int s2io_starter(void);
1013 static void s2io_closer(void);
1014 static void s2io_tx_watchdog(struct net_device *dev);
1015 static void s2io_tasklet(unsigned long dev_addr);
1016 static void s2io_set_multicast(struct net_device *dev);
1017 static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp);
1018 static void s2io_link(struct s2io_nic * sp, int link);
1019 static void s2io_reset(struct s2io_nic * sp);
1020 static int s2io_poll(struct net_device *dev, int *budget);
1021 static void s2io_init_pci(struct s2io_nic * sp);
1022 static int s2io_set_mac_addr(struct net_device *dev, u8 * addr);
1023 static void s2io_alarm_handle(unsigned long data);
1024 static int s2io_enable_msi(struct s2io_nic *nic);
1025 static irqreturn_t s2io_msi_handle(int irq, void *dev_id);
1027 s2io_msix_ring_handle(int irq, void *dev_id);
1029 s2io_msix_fifo_handle(int irq, void *dev_id);
1030 static irqreturn_t s2io_isr(int irq, void *dev_id);
1031 static int verify_xena_quiescence(struct s2io_nic *sp);
1032 static const struct ethtool_ops netdev_ethtool_ops;
1033 static void s2io_set_link(struct work_struct *work);
1034 static int s2io_set_swapper(struct s2io_nic * sp);
1035 static void s2io_card_down(struct s2io_nic *nic);
1036 static int s2io_card_up(struct s2io_nic *nic);
1037 static int get_xena_rev_id(struct pci_dev *pdev);
1038 static int wait_for_cmd_complete(void __iomem *addr, u64 busy_bit,
1040 static int s2io_add_isr(struct s2io_nic * sp);
1041 static void s2io_rem_isr(struct s2io_nic * sp);
1043 static void restore_xmsi_data(struct s2io_nic *nic);
1046 s2io_club_tcp_session(u8 *buffer, u8 **tcp, u32 *tcp_len, struct lro **lro,
1047 struct RxD_t *rxdp, struct s2io_nic *sp);
1048 static void clear_lro_session(struct lro *lro);
1049 static void queue_rx_frame(struct sk_buff *skb);
1050 static void update_L3L4_header(struct s2io_nic *sp, struct lro *lro);
1051 static void lro_append_pkt(struct s2io_nic *sp, struct lro *lro,
1052 struct sk_buff *skb, u32 tcp_len);
1053 static int rts_ds_steer(struct s2io_nic *nic, u8 ds_codepoint, u8 ring);
1055 #define s2io_tcp_mss(skb) skb_shinfo(skb)->gso_size
1056 #define s2io_udp_mss(skb) skb_shinfo(skb)->gso_size
1057 #define s2io_offload_type(skb) skb_shinfo(skb)->gso_type
1059 #define S2IO_PARM_INT(X, def_val) \
1060 static unsigned int X = def_val;\
1061 module_param(X , uint, 0);
1063 #endif /* _S2IO_H */