1 /************************************************************************
2 * s2io.h: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC
3 * Copyright(c) 2002-2005 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;
100 /* Xpak releated alarm and warnings */
102 u64 alarm_transceiver_temp_high;
103 u64 alarm_transceiver_temp_low;
104 u64 alarm_laser_bias_current_high;
105 u64 alarm_laser_bias_current_low;
106 u64 alarm_laser_output_power_high;
107 u64 alarm_laser_output_power_low;
108 u64 warn_transceiver_temp_high;
109 u64 warn_transceiver_temp_low;
110 u64 warn_laser_bias_current_high;
111 u64 warn_laser_bias_current_low;
112 u64 warn_laser_output_power_high;
113 u64 warn_laser_output_power_low;
115 u32 xpak_timer_count;
119 /* The statistics block of Xena */
121 /* Tx MAC statistics counters. */
122 __le32 tmac_data_octets;
124 __le64 tmac_drop_frms;
125 __le32 tmac_bcst_frms;
126 __le32 tmac_mcst_frms;
127 __le64 tmac_pause_ctrl_frms;
128 __le32 tmac_ucst_frms;
129 __le32 tmac_ttl_octets;
130 __le32 tmac_any_err_frms;
131 __le32 tmac_nucst_frms;
132 __le64 tmac_ttl_less_fb_octets;
133 __le64 tmac_vld_ip_octets;
142 /* Rx MAC Statistics counters. */
143 __le32 rmac_data_octets;
144 __le32 rmac_vld_frms;
145 __le64 rmac_fcs_err_frms;
146 __le64 rmac_drop_frms;
147 __le32 rmac_vld_bcst_frms;
148 __le32 rmac_vld_mcst_frms;
149 __le32 rmac_out_rng_len_err_frms;
150 __le32 rmac_in_rng_len_err_frms;
151 __le64 rmac_long_frms;
152 __le64 rmac_pause_ctrl_frms;
153 __le64 rmac_unsup_ctrl_frms;
154 __le32 rmac_accepted_ucst_frms;
155 __le32 rmac_ttl_octets;
156 __le32 rmac_discarded_frms;
157 __le32 rmac_accepted_nucst_frms;
159 __le32 rmac_drop_events;
160 __le64 rmac_ttl_less_fb_octets;
161 __le64 rmac_ttl_frms;
163 __le32 rmac_usized_frms;
165 __le32 rmac_frag_frms;
166 __le32 rmac_osized_frms;
168 __le32 rmac_jabber_frms;
169 __le64 rmac_ttl_64_frms;
170 __le64 rmac_ttl_65_127_frms;
172 __le64 rmac_ttl_128_255_frms;
173 __le64 rmac_ttl_256_511_frms;
175 __le64 rmac_ttl_512_1023_frms;
176 __le64 rmac_ttl_1024_1518_frms;
179 __le64 rmac_ip_octets;
181 __le32 rmac_hdr_err_ip;
185 __le32 rmac_err_drp_udp;
187 __le64 rmac_xgmii_err_sym;
205 __le32 rmac_pause_cnt;
206 __le64 rmac_xgmii_data_err_cnt;
207 __le64 rmac_xgmii_ctrl_err_cnt;
209 __le32 rmac_accepted_ip;
211 /* PCI/PCI-X Read transaction statistics. */
212 __le32 new_rd_req_cnt;
215 __le32 new_rd_req_rtry_cnt;
217 /* PCI/PCI-X Write/Read transaction statistics. */
219 __le32 wr_rtry_rd_ack_cnt;
220 __le32 new_wr_req_rtry_cnt;
221 __le32 new_wr_req_cnt;
225 /* PCI/PCI-X Write / DMA Transaction statistics. */
227 __le32 rd_rtry_wr_ack_cnt;
235 /* Tx MAC statistics overflow counters. */
236 __le32 tmac_data_octets_oflow;
237 __le32 tmac_frms_oflow;
238 __le32 tmac_bcst_frms_oflow;
239 __le32 tmac_mcst_frms_oflow;
240 __le32 tmac_ucst_frms_oflow;
241 __le32 tmac_ttl_octets_oflow;
242 __le32 tmac_any_err_frms_oflow;
243 __le32 tmac_nucst_frms_oflow;
244 __le64 tmac_vlan_frms;
245 __le32 tmac_drop_ip_oflow;
246 __le32 tmac_vld_ip_oflow;
247 __le32 tmac_rst_tcp_oflow;
248 __le32 tmac_icmp_oflow;
249 __le32 tpa_unknown_protocol;
250 __le32 tmac_udp_oflow;
252 __le32 tpa_parse_failure;
254 /* Rx MAC Statistics overflow counters. */
255 __le32 rmac_data_octets_oflow;
256 __le32 rmac_vld_frms_oflow;
257 __le32 rmac_vld_bcst_frms_oflow;
258 __le32 rmac_vld_mcst_frms_oflow;
259 __le32 rmac_accepted_ucst_frms_oflow;
260 __le32 rmac_ttl_octets_oflow;
261 __le32 rmac_discarded_frms_oflow;
262 __le32 rmac_accepted_nucst_frms_oflow;
263 __le32 rmac_usized_frms_oflow;
264 __le32 rmac_drop_events_oflow;
265 __le32 rmac_frag_frms_oflow;
266 __le32 rmac_osized_frms_oflow;
267 __le32 rmac_ip_oflow;
268 __le32 rmac_jabber_frms_oflow;
269 __le32 rmac_icmp_oflow;
270 __le32 rmac_drop_ip_oflow;
271 __le32 rmac_err_drp_udp_oflow;
272 __le32 rmac_udp_oflow;
274 __le32 rmac_pause_cnt_oflow;
275 __le64 rmac_ttl_1519_4095_frms;
276 __le64 rmac_ttl_4096_8191_frms;
277 __le64 rmac_ttl_8192_max_frms;
278 __le64 rmac_ttl_gt_max_frms;
279 __le64 rmac_osized_alt_frms;
280 __le64 rmac_jabber_alt_frms;
281 __le64 rmac_gt_max_alt_frms;
282 __le64 rmac_vlan_frms;
283 __le32 rmac_len_discard;
284 __le32 rmac_fcs_discard;
285 __le32 rmac_pf_discard;
286 __le32 rmac_da_discard;
287 __le32 rmac_red_discard;
288 __le32 rmac_rts_discard;
290 __le32 rmac_ingm_full_discard;
292 __le32 rmac_accepted_ip_oflow;
294 __le32 link_fault_cnt;
296 struct swStat sw_stat;
297 struct xpakStat xpak_stat;
300 /* Default value for 'vlan_strip_tag' configuration parameter */
301 #define NO_STRIP_IN_PROMISC 2
304 * Structures representing different init time configuration
305 * parameters of the NIC.
308 #define MAX_TX_FIFOS 8
309 #define MAX_RX_RINGS 8
311 /* FIFO mappings for all possible number of fifos configured */
312 static int fifo_map[][MAX_TX_FIFOS] = {
313 {0, 0, 0, 0, 0, 0, 0, 0},
314 {0, 0, 0, 0, 1, 1, 1, 1},
315 {0, 0, 0, 1, 1, 1, 2, 2},
316 {0, 0, 1, 1, 2, 2, 3, 3},
317 {0, 0, 1, 1, 2, 2, 3, 4},
318 {0, 0, 1, 1, 2, 3, 4, 5},
319 {0, 0, 1, 2, 3, 4, 5, 6},
320 {0, 1, 2, 3, 4, 5, 6, 7},
323 /* Maintains Per FIFO related information. */
324 struct tx_fifo_config {
325 #define MAX_AVAILABLE_TXDS 8192
326 u32 fifo_len; /* specifies len of FIFO upto 8192, ie no of TxDLs */
327 /* Priority definition */
328 #define TX_FIFO_PRI_0 0 /*Highest */
329 #define TX_FIFO_PRI_1 1
330 #define TX_FIFO_PRI_2 2
331 #define TX_FIFO_PRI_3 3
332 #define TX_FIFO_PRI_4 4
333 #define TX_FIFO_PRI_5 5
334 #define TX_FIFO_PRI_6 6
335 #define TX_FIFO_PRI_7 7 /*lowest */
336 u8 fifo_priority; /* specifies pointer level for FIFO */
337 /* user should not set twos fifos with same pri */
339 #define NO_SNOOP_TXD 0x01
340 #define NO_SNOOP_TXD_BUFFER 0x02
344 /* Maintains per Ring related information */
345 struct rx_ring_config {
346 u32 num_rxd; /*No of RxDs per Rx Ring */
347 #define RX_RING_PRI_0 0 /* highest */
348 #define RX_RING_PRI_1 1
349 #define RX_RING_PRI_2 2
350 #define RX_RING_PRI_3 3
351 #define RX_RING_PRI_4 4
352 #define RX_RING_PRI_5 5
353 #define RX_RING_PRI_6 6
354 #define RX_RING_PRI_7 7 /* lowest */
356 u8 ring_priority; /*Specifies service priority of ring */
357 /* OSM should not set any two rings with same priority */
358 u8 ring_org; /*Organization of ring */
359 #define RING_ORG_BUFF1 0x01
360 #define RX_RING_ORG_BUFF3 0x03
361 #define RX_RING_ORG_BUFF5 0x05
364 #define NO_SNOOP_RXD 0x01
365 #define NO_SNOOP_RXD_BUFFER 0x02
368 /* This structure provides contains values of the tunable parameters
371 struct config_param {
373 u32 tx_fifo_num; /*Number of Tx FIFOs */
375 u8 fifo_mapping[MAX_TX_FIFOS];
376 struct tx_fifo_config tx_cfg[MAX_TX_FIFOS]; /*Per-Tx FIFO config */
377 u32 max_txds; /*Max no. of Tx buffer descriptor per TxDL */
379 /* Specifies if Tx Intr is UTILZ or PER_LIST type. */
382 u32 rx_ring_num; /*Number of receive rings */
383 #define MAX_RX_BLOCKS_PER_RING 150
385 struct rx_ring_config rx_cfg[MAX_RX_RINGS]; /*Per-Rx Ring config */
386 u8 bimodal; /*Flag for setting bimodal interrupts*/
388 #define HEADER_ETHERNET_II_802_3_SIZE 14
389 #define HEADER_802_2_SIZE 3
390 #define HEADER_SNAP_SIZE 5
391 #define HEADER_VLAN_SIZE 4
394 #define MAX_PYLD 1500
395 #define MAX_MTU (MAX_PYLD+18)
396 #define MAX_MTU_VLAN (MAX_PYLD+22)
397 #define MAX_PYLD_JUMBO 9600
398 #define MAX_MTU_JUMBO (MAX_PYLD_JUMBO+18)
399 #define MAX_MTU_JUMBO_VLAN (MAX_PYLD_JUMBO+22)
403 /* Structure representing MAC Addrs */
405 u8 mac_addr[ETH_ALEN];
408 /* Structure that represent every FIFO element in the BAR1
411 struct TxFIFO_element {
415 #define TX_FIFO_LAST_TXD_NUM( val) vBIT(val,0,8)
416 #define TX_FIFO_FIRST_LIST BIT(14)
417 #define TX_FIFO_LAST_LIST BIT(15)
418 #define TX_FIFO_FIRSTNLAST_LIST vBIT(3,14,2)
419 #define TX_FIFO_SPECIAL_FUNC BIT(23)
420 #define TX_FIFO_DS_NO_SNOOP BIT(31)
421 #define TX_FIFO_BUFF_NO_SNOOP BIT(30)
424 /* Tx descriptor structure */
428 #define TXD_LIST_OWN_XENA BIT(7)
429 #define TXD_T_CODE (BIT(12)|BIT(13)|BIT(14)|BIT(15))
430 #define TXD_T_CODE_OK(val) (|(val & TXD_T_CODE))
431 #define GET_TXD_T_CODE(val) ((val & TXD_T_CODE)<<12)
432 #define TXD_GATHER_CODE (BIT(22) | BIT(23))
433 #define TXD_GATHER_CODE_FIRST BIT(22)
434 #define TXD_GATHER_CODE_LAST BIT(23)
435 #define TXD_TCP_LSO_EN BIT(30)
436 #define TXD_UDP_COF_EN BIT(31)
437 #define TXD_UFO_EN BIT(31) | BIT(30)
438 #define TXD_TCP_LSO_MSS(val) vBIT(val,34,14)
439 #define TXD_UFO_MSS(val) vBIT(val,34,14)
440 #define TXD_BUFFER0_SIZE(val) vBIT(val,48,16)
443 #define TXD_TX_CKO_CONTROL (BIT(5)|BIT(6)|BIT(7))
444 #define TXD_TX_CKO_IPV4_EN BIT(5)
445 #define TXD_TX_CKO_TCP_EN BIT(6)
446 #define TXD_TX_CKO_UDP_EN BIT(7)
447 #define TXD_VLAN_ENABLE BIT(15)
448 #define TXD_VLAN_TAG(val) vBIT(val,16,16)
449 #define TXD_INT_NUMBER(val) vBIT(val,34,6)
450 #define TXD_INT_TYPE_PER_LIST BIT(47)
451 #define TXD_INT_TYPE_UTILZ BIT(46)
452 #define TXD_SET_MARKER vBIT(0x6,0,4)
455 u64 Host_Control; /* reserved for host */
458 /* Structure to hold the phy and virt addr of every TxDL. */
459 struct list_info_hold {
460 dma_addr_t list_phy_addr;
461 void *list_virt_addr;
464 /* Rx descriptor structure for 1 buffer mode */
466 u64 Host_Control; /* reserved for host */
468 #define RXD_OWN_XENA BIT(7)
469 #define RXD_T_CODE (BIT(12)|BIT(13)|BIT(14)|BIT(15))
470 #define RXD_FRAME_PROTO vBIT(0xFFFF,24,8)
471 #define RXD_FRAME_PROTO_IPV4 BIT(27)
472 #define RXD_FRAME_PROTO_IPV6 BIT(28)
473 #define RXD_FRAME_IP_FRAG BIT(29)
474 #define RXD_FRAME_PROTO_TCP BIT(30)
475 #define RXD_FRAME_PROTO_UDP BIT(31)
476 #define TCP_OR_UDP_FRAME (RXD_FRAME_PROTO_TCP | RXD_FRAME_PROTO_UDP)
477 #define RXD_GET_L3_CKSUM(val) ((u16)(val>> 16) & 0xFFFF)
478 #define RXD_GET_L4_CKSUM(val) ((u16)(val) & 0xFFFF)
481 #define THE_RXD_MARK 0x3
482 #define SET_RXD_MARKER vBIT(THE_RXD_MARK, 0, 2)
483 #define GET_RXD_MARKER(ctrl) ((ctrl & SET_RXD_MARKER) >> 62)
485 #define MASK_VLAN_TAG vBIT(0xFFFF,48,16)
486 #define SET_VLAN_TAG(val) vBIT(val,48,16)
487 #define SET_NUM_TAG(val) vBIT(val,16,32)
491 /* Rx descriptor structure for 1 buffer mode */
495 #define MASK_BUFFER0_SIZE_1 vBIT(0x3FFF,2,14)
496 #define SET_BUFFER0_SIZE_1(val) vBIT(val,2,14)
497 #define RXD_GET_BUFFER0_SIZE_1(_Control_2) \
498 (u16)((_Control_2 & MASK_BUFFER0_SIZE_1) >> 48)
501 /* Rx descriptor structure for 3 or 2 buffer mode */
506 #define MASK_BUFFER0_SIZE_3 vBIT(0xFF,2,14)
507 #define MASK_BUFFER1_SIZE_3 vBIT(0xFFFF,16,16)
508 #define MASK_BUFFER2_SIZE_3 vBIT(0xFFFF,32,16)
509 #define SET_BUFFER0_SIZE_3(val) vBIT(val,8,8)
510 #define SET_BUFFER1_SIZE_3(val) vBIT(val,16,16)
511 #define SET_BUFFER2_SIZE_3(val) vBIT(val,32,16)
512 #define RXD_GET_BUFFER0_SIZE_3(Control_2) \
513 (u8)((Control_2 & MASK_BUFFER0_SIZE_3) >> 48)
514 #define RXD_GET_BUFFER1_SIZE_3(Control_2) \
515 (u16)((Control_2 & MASK_BUFFER1_SIZE_3) >> 32)
516 #define RXD_GET_BUFFER2_SIZE_3(Control_2) \
517 (u16)((Control_2 & MASK_BUFFER2_SIZE_3) >> 16)
527 /* Structure that represents the Rx descriptor block which contains
528 * 128 Rx descriptors.
531 #define MAX_RXDS_PER_BLOCK_1 127
532 struct RxD1 rxd[MAX_RXDS_PER_BLOCK_1];
535 #define END_OF_BLOCK 0xFEFFFFFFFFFFFFFFULL
536 u64 reserved_1; /* 0xFEFFFFFFFFFFFFFF to mark last
538 u64 reserved_2_pNext_RxD_block; /* Logical ptr to next */
539 u64 pNext_RxD_Blk_physical; /* Buff0_ptr.In a 32 bit arch
540 * the upper 32 bits should
544 #define SIZE_OF_BLOCK 4096
546 #define RXD_MODE_1 0 /* One Buffer mode */
547 #define RXD_MODE_3A 1 /* Three Buffer mode */
548 #define RXD_MODE_3B 2 /* Two Buffer mode */
550 /* Structure to hold virtual addresses of Buf0 and Buf1 in
559 /* Structure which stores all the MAC control parameters */
561 /* This structure stores the offset of the RxD in the ring
562 * from which the Rx Interrupt processor can start picking
563 * up the RxDs for processing.
565 struct rx_curr_get_info {
571 struct rx_curr_put_info {
577 /* This structure stores the offset of the TxDl in the FIFO
578 * from which the Tx Interrupt processor can start picking
579 * up the TxDLs for send complete interrupt processing.
581 struct tx_curr_get_info {
586 struct tx_curr_put_info {
596 /* Structure that holds the Phy and virt addresses of the Blocks */
597 struct rx_block_info {
598 void *block_virt_addr;
599 dma_addr_t block_dma_addr;
600 struct rxd_info *rxds;
603 /* Ring specific structure */
605 /* The ring number */
609 * Place holders for the virtual and physical addresses of
612 struct rx_block_info rx_blocks[MAX_RX_BLOCKS_PER_RING];
617 * Put pointer info which indictes which RxD has to be replenished
620 struct rx_curr_put_info rx_curr_put_info;
623 * Get pointer info which indictes which is the last RxD that was
624 * processed by the driver.
626 struct rx_curr_get_info rx_curr_get_info;
628 /* Index to the absolute position of the put pointer of Rx ring */
631 /* Buffer Address store. */
633 struct s2io_nic *nic;
636 /* Fifo specific structure */
641 /* Maximum TxDs per TxDL */
644 /* Place holder of all the TX List's Phy and Virt addresses. */
645 struct list_info_hold *list_info;
648 * Current offset within the tx FIFO where driver would write
651 struct tx_curr_put_info tx_curr_put_info;
654 * Current offset within tx FIFO from where the driver would start freeing
657 struct tx_curr_get_info tx_curr_get_info;
659 struct s2io_nic *nic;
662 /* Information related to the Tx and Rx FIFOs and Rings of Xena
663 * is maintained in this structure.
667 /* logical pointer of start of each Tx FIFO */
668 struct TxFIFO_element __iomem *tx_FIFO_start[MAX_TX_FIFOS];
670 /* Fifo specific structure */
671 struct fifo_info fifos[MAX_TX_FIFOS];
673 /* Save virtual address of TxD page with zero DMA addr(if any) */
674 void *zerodma_virt_addr;
677 /* Ring specific structure */
678 struct ring_info rings[MAX_RX_RINGS];
681 u16 mc_pause_threshold_q0q3;
682 u16 mc_pause_threshold_q4q7;
684 void *stats_mem; /* orignal pointer to allocated mem */
685 dma_addr_t stats_mem_phy; /* Physical address of the stat block */
687 struct stat_block *stats_info; /* Logical address of the stat block */
690 /* structure representing the user defined MAC addresses */
696 /* Default Tunable parameters of the NIC. */
697 #define DEFAULT_FIFO_0_LEN 4096
698 #define DEFAULT_FIFO_1_7_LEN 512
699 #define SMALL_BLK_CNT 30
700 #define LARGE_BLK_CNT 100
703 * Structure to keep track of the MSI-X vectors and the corresponding
704 * argument registered against each vector
706 #define MAX_REQUESTED_MSI_X 17
707 struct s2io_msix_entry
714 #define MSIX_FIFO_TYPE 1
715 #define MSIX_RING_TYPE 2
718 #define MSIX_REGISTERED_SUCCESS 0xAA
721 struct msix_info_st {
726 /* Data structure to represent a LRO session */
728 struct sk_buff *parent;
729 struct sk_buff *last_frag;
745 /* Structure representing one instance of the NIC */
749 * Count of packets to be processed in a given iteration, it will be indicated
750 * by the quota field of the device structure when NAPI is enabled.
753 struct net_device *dev;
754 struct mac_info mac_control;
755 struct config_param config;
756 struct pci_dev *pdev;
759 #define MAX_MAC_SUPPORTED 16
760 #define MAX_SUPPORTED_MULTICASTS MAX_MAC_SUPPORTED
762 struct mac_addr def_mac_addr[MAX_MAC_SUPPORTED];
763 struct mac_addr pre_mac_addr[MAX_MAC_SUPPORTED];
765 struct net_device_stats stats;
767 int device_close_flag;
768 int device_enabled_once;
771 struct tasklet_struct task;
772 volatile unsigned long tasklet_status;
774 /* Timer that handles I/O errors/exceptions */
775 struct timer_list alarm_timer;
777 /* Space to back up the PCI config space */
778 u32 config_space[256 / sizeof(u32)];
780 atomic_t rx_bufs_left[MAX_RX_RINGS];
788 #define MAX_ADDRS_SUPPORTED 64
791 struct usr_addr usr_addrs[MAX_ADDRS_SUPPORTED];
802 /* Id timer, used to blink NIC to physically identify NIC. */
803 struct timer_list id_timer;
805 /* Restart timer, used to restart NIC if the device is stuck and
806 * a schedule task that will set the correct Link state once the
807 * NIC's PHY has stabilized after a state change.
809 struct work_struct rst_timer_task;
810 struct work_struct set_link_task;
812 /* Flag that can be used to turn on or turn off the Rx checksum
817 /* after blink, the adapter must be restored with original
822 /* Last known link state. */
831 volatile unsigned long link_state;
832 struct vlan_group *vlgrp;
833 #define MSIX_FLG 0xA5
834 struct msix_entry *entries;
835 struct s2io_msix_entry *s2io_entries;
836 char desc[MAX_REQUESTED_MSI_X][25];
838 int avail_msix_vectors; /* No. of MSI-X vectors granted by system */
840 struct msix_info_st msix_info[0x3f];
842 #define XFRAME_I_DEVICE 1
843 #define XFRAME_II_DEVICE 2
846 #define MAX_LRO_SESSIONS 32
847 struct lro lro0_n[MAX_LRO_SESSIONS];
848 unsigned long clubbed_frms_cnt;
849 unsigned long sending_both;
851 u16 lro_max_aggr_per_sess;
861 #define VPD_STRING_LEN 80
862 u8 product_name[VPD_STRING_LEN];
863 u8 serial_num[VPD_STRING_LEN];
866 #define RESET_ERROR 1;
869 /* OS related system calls */
871 static inline u64 readq(void __iomem *addr)
874 ret = readl(addr + 4);
883 static inline void writeq(u64 val, void __iomem *addr)
885 writel((u32) (val), addr);
886 writel((u32) (val >> 32), (addr + 4));
891 * Some registers have to be written in a particular order to
892 * expect correct hardware operation. The macro SPECIAL_REG_WRITE
893 * is used to perform such ordered writes. Defines UF (Upper First)
894 * and LF (Lower First) will be used to specify the required write order.
898 static inline void SPECIAL_REG_WRITE(u64 val, void __iomem *addr, int order)
903 writel((u32) (val), addr);
905 writel((u32) (val >> 32), (addr + 4));
906 ret = readl(addr + 4);
908 writel((u32) (val >> 32), (addr + 4));
909 ret = readl(addr + 4);
910 writel((u32) (val), addr);
915 /* Interrupt related values of Xena */
917 #define ENABLE_INTRS 1
918 #define DISABLE_INTRS 2
920 /* Highest level interrupt blocks */
921 #define TX_PIC_INTR (0x0001<<0)
922 #define TX_DMA_INTR (0x0001<<1)
923 #define TX_MAC_INTR (0x0001<<2)
924 #define TX_XGXS_INTR (0x0001<<3)
925 #define TX_TRAFFIC_INTR (0x0001<<4)
926 #define RX_PIC_INTR (0x0001<<5)
927 #define RX_DMA_INTR (0x0001<<6)
928 #define RX_MAC_INTR (0x0001<<7)
929 #define RX_XGXS_INTR (0x0001<<8)
930 #define RX_TRAFFIC_INTR (0x0001<<9)
931 #define MC_INTR (0x0001<<10)
932 #define ENA_ALL_INTRS ( TX_PIC_INTR | \
944 /* Interrupt masks for the general interrupt mask register */
945 #define DISABLE_ALL_INTRS 0xFFFFFFFFFFFFFFFFULL
947 #define TXPIC_INT_M BIT(0)
948 #define TXDMA_INT_M BIT(1)
949 #define TXMAC_INT_M BIT(2)
950 #define TXXGXS_INT_M BIT(3)
951 #define TXTRAFFIC_INT_M BIT(8)
952 #define PIC_RX_INT_M BIT(32)
953 #define RXDMA_INT_M BIT(33)
954 #define RXMAC_INT_M BIT(34)
955 #define MC_INT_M BIT(35)
956 #define RXXGXS_INT_M BIT(36)
957 #define RXTRAFFIC_INT_M BIT(40)
959 /* PIC level Interrupts TODO*/
961 /* DMA level Inressupts */
962 #define TXDMA_PFC_INT_M BIT(0)
963 #define TXDMA_PCC_INT_M BIT(2)
965 /* PFC block interrupts */
966 #define PFC_MISC_ERR_1 BIT(0) /* Interrupt to indicate FIFO full */
968 /* PCC block interrupts. */
969 #define PCC_FB_ECC_ERR vBIT(0xff, 16, 8) /* Interrupt to indicate
972 #define RXD_GET_VLAN_TAG(Control_2) (u16)(Control_2 & MASK_VLAN_TAG)
974 * Prototype declaration.
976 static int __devinit s2io_init_nic(struct pci_dev *pdev,
977 const struct pci_device_id *pre);
978 static void __devexit s2io_rem_nic(struct pci_dev *pdev);
979 static int init_shared_mem(struct s2io_nic *sp);
980 static void free_shared_mem(struct s2io_nic *sp);
981 static int init_nic(struct s2io_nic *nic);
982 static void rx_intr_handler(struct ring_info *ring_data);
983 static void tx_intr_handler(struct fifo_info *fifo_data);
984 static void alarm_intr_handler(struct s2io_nic *sp);
986 static int s2io_starter(void);
987 static void s2io_closer(void);
988 static void s2io_tx_watchdog(struct net_device *dev);
989 static void s2io_tasklet(unsigned long dev_addr);
990 static void s2io_set_multicast(struct net_device *dev);
991 static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp);
992 static void s2io_link(struct s2io_nic * sp, int link);
993 static void s2io_reset(struct s2io_nic * sp);
994 static int s2io_poll(struct net_device *dev, int *budget);
995 static void s2io_init_pci(struct s2io_nic * sp);
996 static int s2io_set_mac_addr(struct net_device *dev, u8 * addr);
997 static void s2io_alarm_handle(unsigned long data);
998 static int s2io_enable_msi(struct s2io_nic *nic);
999 static irqreturn_t s2io_msi_handle(int irq, void *dev_id);
1001 s2io_msix_ring_handle(int irq, void *dev_id);
1003 s2io_msix_fifo_handle(int irq, void *dev_id);
1004 static irqreturn_t s2io_isr(int irq, void *dev_id);
1005 static int verify_xena_quiescence(struct s2io_nic *sp);
1006 static const struct ethtool_ops netdev_ethtool_ops;
1007 static void s2io_set_link(struct work_struct *work);
1008 static int s2io_set_swapper(struct s2io_nic * sp);
1009 static void s2io_card_down(struct s2io_nic *nic);
1010 static int s2io_card_up(struct s2io_nic *nic);
1011 static int get_xena_rev_id(struct pci_dev *pdev);
1012 static int wait_for_cmd_complete(void __iomem *addr, u64 busy_bit,
1014 static int s2io_add_isr(struct s2io_nic * sp);
1015 static void s2io_rem_isr(struct s2io_nic * sp);
1017 static void restore_xmsi_data(struct s2io_nic *nic);
1020 s2io_club_tcp_session(u8 *buffer, u8 **tcp, u32 *tcp_len, struct lro **lro,
1021 struct RxD_t *rxdp, struct s2io_nic *sp);
1022 static void clear_lro_session(struct lro *lro);
1023 static void queue_rx_frame(struct sk_buff *skb);
1024 static void update_L3L4_header(struct s2io_nic *sp, struct lro *lro);
1025 static void lro_append_pkt(struct s2io_nic *sp, struct lro *lro,
1026 struct sk_buff *skb, u32 tcp_len);
1027 static int rts_ds_steer(struct s2io_nic *nic, u8 ds_codepoint, u8 ring);
1029 #define s2io_tcp_mss(skb) skb_shinfo(skb)->gso_size
1030 #define s2io_udp_mss(skb) skb_shinfo(skb)->gso_size
1031 #define s2io_offload_type(skb) skb_shinfo(skb)->gso_type
1033 #define S2IO_PARM_INT(X, def_val) \
1034 static unsigned int X = def_val;\
1035 module_param(X , uint, 0);
1037 #endif /* _S2IO_H */