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Linux 4.16.11
[linux/fpc-iii.git] / drivers / net / ethernet / neterion / s2io.c
blobb8983e73265a015cbc39249cfb8732706579fff4
1 /************************************************************************
2 * s2io.c: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC
3 * Copyright(c) 2002-2010 Exar Corp.
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 * Credits:
14 * Jeff Garzik : For pointing out the improper error condition
15 * check in the s2io_xmit routine and also some
16 * issues in the Tx watch dog function. Also for
17 * patiently answering all those innumerable
18 * questions regaring the 2.6 porting issues.
19 * Stephen Hemminger : Providing proper 2.6 porting mechanism for some
20 * macros available only in 2.6 Kernel.
21 * Francois Romieu : For pointing out all code part that were
22 * deprecated and also styling related comments.
23 * Grant Grundler : For helping me get rid of some Architecture
24 * dependent code.
25 * Christopher Hellwig : Some more 2.6 specific issues in the driver.
26 *
27 * The module loadable parameters that are supported by the driver and a brief
28 * explanation of all the variables.
29 *
30 * rx_ring_num : This can be used to program the number of receive rings used
31 * in the driver.
32 * rx_ring_sz: This defines the number of receive blocks each ring can have.
33 * This is also an array of size 8.
34 * rx_ring_mode: This defines the operation mode of all 8 rings. The valid
35 * values are 1, 2.
36 * tx_fifo_num: This defines the number of Tx FIFOs thats used int the driver.
37 * tx_fifo_len: This too is an array of 8. Each element defines the number of
38 * Tx descriptors that can be associated with each corresponding FIFO.
39 * intr_type: This defines the type of interrupt. The values can be 0(INTA),
40 * 2(MSI_X). Default value is '2(MSI_X)'
41 * lro_max_pkts: This parameter defines maximum number of packets can be
42 * aggregated as a single large packet
43 * napi: This parameter used to enable/disable NAPI (polling Rx)
44 * Possible values '1' for enable and '0' for disable. Default is '1'
45 * vlan_tag_strip: This can be used to enable or disable vlan stripping.
46 * Possible values '1' for enable , '0' for disable.
47 * Default is '2' - which means disable in promisc mode
48 * and enable in non-promiscuous mode.
49 * multiq: This parameter used to enable/disable MULTIQUEUE support.
50 * Possible values '1' for enable and '0' for disable. Default is '0'
51 ************************************************************************/
52
53 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
54
55 #include <linux/module.h>
56 #include <linux/types.h>
57 #include <linux/errno.h>
58 #include <linux/ioport.h>
59 #include <linux/pci.h>
60 #include <linux/dma-mapping.h>
61 #include <linux/kernel.h>
62 #include <linux/netdevice.h>
63 #include <linux/etherdevice.h>
64 #include <linux/mdio.h>
65 #include <linux/skbuff.h>
66 #include <linux/init.h>
67 #include <linux/delay.h>
68 #include <linux/stddef.h>
69 #include <linux/ioctl.h>
70 #include <linux/timex.h>
71 #include <linux/ethtool.h>
72 #include <linux/workqueue.h>
73 #include <linux/if_vlan.h>
74 #include <linux/ip.h>
75 #include <linux/tcp.h>
76 #include <linux/uaccess.h>
77 #include <linux/io.h>
78 #include <linux/slab.h>
79 #include <linux/prefetch.h>
80 #include <net/tcp.h>
81 #include <net/checksum.h>
82
83 #include <asm/div64.h>
84 #include <asm/irq.h>
85
86 /* local include */
87 #include "s2io.h"
88 #include "s2io-regs.h"
89
90 #define DRV_VERSION "2.0.26.28"
91
92 /* S2io Driver name & version. */
93 static const char s2io_driver_name[] = "Neterion";
94 static const char s2io_driver_version[] = DRV_VERSION;
95
96 static const int rxd_size[2] = {32, 48};
97 static const int rxd_count[2] = {127, 85};
98
99 static inline int RXD_IS_UP2DT(struct RxD_t *rxdp)
100 {
101 int ret;
102
103 ret = ((!(rxdp->Control_1 & RXD_OWN_XENA)) &&
104 (GET_RXD_MARKER(rxdp->Control_2) != THE_RXD_MARK));
105
106 return ret;
107 }
108
109 /*
110 * Cards with following subsystem_id have a link state indication
111 * problem, 600B, 600C, 600D, 640B, 640C and 640D.
112 * macro below identifies these cards given the subsystem_id.
113 */
114 #define CARDS_WITH_FAULTY_LINK_INDICATORS(dev_type, subid) \
115 (dev_type == XFRAME_I_DEVICE) ? \
116 ((((subid >= 0x600B) && (subid <= 0x600D)) || \
117 ((subid >= 0x640B) && (subid <= 0x640D))) ? 1 : 0) : 0
118
119 #define LINK_IS_UP(val64) (!(val64 & (ADAPTER_STATUS_RMAC_REMOTE_FAULT | \
120 ADAPTER_STATUS_RMAC_LOCAL_FAULT)))
121
122 static inline int is_s2io_card_up(const struct s2io_nic *sp)
123 {
124 return test_bit(__S2IO_STATE_CARD_UP, &sp->state);
125 }
126
127 /* Ethtool related variables and Macros. */
128 static const char s2io_gstrings[][ETH_GSTRING_LEN] = {
129 "Register test\t(offline)",
130 "Eeprom test\t(offline)",
131 "Link test\t(online)",
132 "RLDRAM test\t(offline)",
133 "BIST Test\t(offline)"
134 };
135
136 static const char ethtool_xena_stats_keys[][ETH_GSTRING_LEN] = {
137 {"tmac_frms"},
138 {"tmac_data_octets"},
139 {"tmac_drop_frms"},
140 {"tmac_mcst_frms"},
141 {"tmac_bcst_frms"},
142 {"tmac_pause_ctrl_frms"},
143 {"tmac_ttl_octets"},
144 {"tmac_ucst_frms"},
145 {"tmac_nucst_frms"},
146 {"tmac_any_err_frms"},
147 {"tmac_ttl_less_fb_octets"},
148 {"tmac_vld_ip_octets"},
149 {"tmac_vld_ip"},
150 {"tmac_drop_ip"},
151 {"tmac_icmp"},
152 {"tmac_rst_tcp"},
153 {"tmac_tcp"},
154 {"tmac_udp"},
155 {"rmac_vld_frms"},
156 {"rmac_data_octets"},
157 {"rmac_fcs_err_frms"},
158 {"rmac_drop_frms"},
159 {"rmac_vld_mcst_frms"},
160 {"rmac_vld_bcst_frms"},
161 {"rmac_in_rng_len_err_frms"},
162 {"rmac_out_rng_len_err_frms"},
163 {"rmac_long_frms"},
164 {"rmac_pause_ctrl_frms"},
165 {"rmac_unsup_ctrl_frms"},
166 {"rmac_ttl_octets"},
167 {"rmac_accepted_ucst_frms"},
168 {"rmac_accepted_nucst_frms"},
169 {"rmac_discarded_frms"},
170 {"rmac_drop_events"},
171 {"rmac_ttl_less_fb_octets"},
172 {"rmac_ttl_frms"},
173 {"rmac_usized_frms"},
174 {"rmac_osized_frms"},
175 {"rmac_frag_frms"},
176 {"rmac_jabber_frms"},
177 {"rmac_ttl_64_frms"},
178 {"rmac_ttl_65_127_frms"},
179 {"rmac_ttl_128_255_frms"},
180 {"rmac_ttl_256_511_frms"},
181 {"rmac_ttl_512_1023_frms"},
182 {"rmac_ttl_1024_1518_frms"},
183 {"rmac_ip"},
184 {"rmac_ip_octets"},
185 {"rmac_hdr_err_ip"},
186 {"rmac_drop_ip"},
187 {"rmac_icmp"},
188 {"rmac_tcp"},
189 {"rmac_udp"},
190 {"rmac_err_drp_udp"},
191 {"rmac_xgmii_err_sym"},
192 {"rmac_frms_q0"},
193 {"rmac_frms_q1"},
194 {"rmac_frms_q2"},
195 {"rmac_frms_q3"},
196 {"rmac_frms_q4"},
197 {"rmac_frms_q5"},
198 {"rmac_frms_q6"},
199 {"rmac_frms_q7"},
200 {"rmac_full_q0"},
201 {"rmac_full_q1"},
202 {"rmac_full_q2"},
203 {"rmac_full_q3"},
204 {"rmac_full_q4"},
205 {"rmac_full_q5"},
206 {"rmac_full_q6"},
207 {"rmac_full_q7"},
208 {"rmac_pause_cnt"},
209 {"rmac_xgmii_data_err_cnt"},
210 {"rmac_xgmii_ctrl_err_cnt"},
211 {"rmac_accepted_ip"},
212 {"rmac_err_tcp"},
213 {"rd_req_cnt"},
214 {"new_rd_req_cnt"},
215 {"new_rd_req_rtry_cnt"},
216 {"rd_rtry_cnt"},
217 {"wr_rtry_rd_ack_cnt"},
218 {"wr_req_cnt"},
219 {"new_wr_req_cnt"},
220 {"new_wr_req_rtry_cnt"},
221 {"wr_rtry_cnt"},
222 {"wr_disc_cnt"},
223 {"rd_rtry_wr_ack_cnt"},
224 {"txp_wr_cnt"},
225 {"txd_rd_cnt"},
226 {"txd_wr_cnt"},
227 {"rxd_rd_cnt"},
228 {"rxd_wr_cnt"},
229 {"txf_rd_cnt"},
230 {"rxf_wr_cnt"}
231 };
232
233 static const char ethtool_enhanced_stats_keys[][ETH_GSTRING_LEN] = {
234 {"rmac_ttl_1519_4095_frms"},
235 {"rmac_ttl_4096_8191_frms"},
236 {"rmac_ttl_8192_max_frms"},
237 {"rmac_ttl_gt_max_frms"},
238 {"rmac_osized_alt_frms"},
239 {"rmac_jabber_alt_frms"},
240 {"rmac_gt_max_alt_frms"},
241 {"rmac_vlan_frms"},
242 {"rmac_len_discard"},
243 {"rmac_fcs_discard"},
244 {"rmac_pf_discard"},
245 {"rmac_da_discard"},
246 {"rmac_red_discard"},
247 {"rmac_rts_discard"},
248 {"rmac_ingm_full_discard"},
249 {"link_fault_cnt"}
250 };
251
252 static const char ethtool_driver_stats_keys[][ETH_GSTRING_LEN] = {
253 {"\n DRIVER STATISTICS"},
254 {"single_bit_ecc_errs"},
255 {"double_bit_ecc_errs"},
256 {"parity_err_cnt"},
257 {"serious_err_cnt"},
258 {"soft_reset_cnt"},
259 {"fifo_full_cnt"},
260 {"ring_0_full_cnt"},
261 {"ring_1_full_cnt"},
262 {"ring_2_full_cnt"},
263 {"ring_3_full_cnt"},
264 {"ring_4_full_cnt"},
265 {"ring_5_full_cnt"},
266 {"ring_6_full_cnt"},
267 {"ring_7_full_cnt"},
268 {"alarm_transceiver_temp_high"},
269 {"alarm_transceiver_temp_low"},
270 {"alarm_laser_bias_current_high"},
271 {"alarm_laser_bias_current_low"},
272 {"alarm_laser_output_power_high"},
273 {"alarm_laser_output_power_low"},
274 {"warn_transceiver_temp_high"},
275 {"warn_transceiver_temp_low"},
276 {"warn_laser_bias_current_high"},
277 {"warn_laser_bias_current_low"},
278 {"warn_laser_output_power_high"},
279 {"warn_laser_output_power_low"},
280 {"lro_aggregated_pkts"},
281 {"lro_flush_both_count"},
282 {"lro_out_of_sequence_pkts"},
283 {"lro_flush_due_to_max_pkts"},
284 {"lro_avg_aggr_pkts"},
285 {"mem_alloc_fail_cnt"},
286 {"pci_map_fail_cnt"},
287 {"watchdog_timer_cnt"},
288 {"mem_allocated"},
289 {"mem_freed"},
290 {"link_up_cnt"},
291 {"link_down_cnt"},
292 {"link_up_time"},
293 {"link_down_time"},
294 {"tx_tcode_buf_abort_cnt"},
295 {"tx_tcode_desc_abort_cnt"},
296 {"tx_tcode_parity_err_cnt"},
297 {"tx_tcode_link_loss_cnt"},
298 {"tx_tcode_list_proc_err_cnt"},
299 {"rx_tcode_parity_err_cnt"},
300 {"rx_tcode_abort_cnt"},
301 {"rx_tcode_parity_abort_cnt"},
302 {"rx_tcode_rda_fail_cnt"},
303 {"rx_tcode_unkn_prot_cnt"},
304 {"rx_tcode_fcs_err_cnt"},
305 {"rx_tcode_buf_size_err_cnt"},
306 {"rx_tcode_rxd_corrupt_cnt"},
307 {"rx_tcode_unkn_err_cnt"},
308 {"tda_err_cnt"},
309 {"pfc_err_cnt"},
310 {"pcc_err_cnt"},
311 {"tti_err_cnt"},
312 {"tpa_err_cnt"},
313 {"sm_err_cnt"},
314 {"lso_err_cnt"},
315 {"mac_tmac_err_cnt"},
316 {"mac_rmac_err_cnt"},
317 {"xgxs_txgxs_err_cnt"},
318 {"xgxs_rxgxs_err_cnt"},
319 {"rc_err_cnt"},
320 {"prc_pcix_err_cnt"},
321 {"rpa_err_cnt"},
322 {"rda_err_cnt"},
323 {"rti_err_cnt"},
324 {"mc_err_cnt"}
325 };
326
327 #define S2IO_XENA_STAT_LEN ARRAY_SIZE(ethtool_xena_stats_keys)
328 #define S2IO_ENHANCED_STAT_LEN ARRAY_SIZE(ethtool_enhanced_stats_keys)
329 #define S2IO_DRIVER_STAT_LEN ARRAY_SIZE(ethtool_driver_stats_keys)
330
331 #define XFRAME_I_STAT_LEN (S2IO_XENA_STAT_LEN + S2IO_DRIVER_STAT_LEN)
332 #define XFRAME_II_STAT_LEN (XFRAME_I_STAT_LEN + S2IO_ENHANCED_STAT_LEN)
333
334 #define XFRAME_I_STAT_STRINGS_LEN (XFRAME_I_STAT_LEN * ETH_GSTRING_LEN)
335 #define XFRAME_II_STAT_STRINGS_LEN (XFRAME_II_STAT_LEN * ETH_GSTRING_LEN)
336
337 #define S2IO_TEST_LEN ARRAY_SIZE(s2io_gstrings)
338 #define S2IO_STRINGS_LEN (S2IO_TEST_LEN * ETH_GSTRING_LEN)
339
340 /* copy mac addr to def_mac_addr array */
341 static void do_s2io_copy_mac_addr(struct s2io_nic *sp, int offset, u64 mac_addr)
342 {
343 sp->def_mac_addr[offset].mac_addr[5] = (u8) (mac_addr);
344 sp->def_mac_addr[offset].mac_addr[4] = (u8) (mac_addr >> 8);
345 sp->def_mac_addr[offset].mac_addr[3] = (u8) (mac_addr >> 16);
346 sp->def_mac_addr[offset].mac_addr[2] = (u8) (mac_addr >> 24);
347 sp->def_mac_addr[offset].mac_addr[1] = (u8) (mac_addr >> 32);
348 sp->def_mac_addr[offset].mac_addr[0] = (u8) (mac_addr >> 40);
349 }
350
351 /*
352 * Constants to be programmed into the Xena's registers, to configure
353 * the XAUI.
354 */
355
356 #define END_SIGN 0x0
357 static const u64 herc_act_dtx_cfg[] = {
358 /* Set address */
359 0x8000051536750000ULL, 0x80000515367500E0ULL,
360 /* Write data */
361 0x8000051536750004ULL, 0x80000515367500E4ULL,
362 /* Set address */
363 0x80010515003F0000ULL, 0x80010515003F00E0ULL,
364 /* Write data */
365 0x80010515003F0004ULL, 0x80010515003F00E4ULL,
366 /* Set address */
367 0x801205150D440000ULL, 0x801205150D4400E0ULL,
368 /* Write data */
369 0x801205150D440004ULL, 0x801205150D4400E4ULL,
370 /* Set address */
371 0x80020515F2100000ULL, 0x80020515F21000E0ULL,
372 /* Write data */
373 0x80020515F2100004ULL, 0x80020515F21000E4ULL,
374 /* Done */
375 END_SIGN
376 };
377
378 static const u64 xena_dtx_cfg[] = {
379 /* Set address */
380 0x8000051500000000ULL, 0x80000515000000E0ULL,
381 /* Write data */
382 0x80000515D9350004ULL, 0x80000515D93500E4ULL,
383 /* Set address */
384 0x8001051500000000ULL, 0x80010515000000E0ULL,
385 /* Write data */
386 0x80010515001E0004ULL, 0x80010515001E00E4ULL,
387 /* Set address */
388 0x8002051500000000ULL, 0x80020515000000E0ULL,
389 /* Write data */
390 0x80020515F2100004ULL, 0x80020515F21000E4ULL,
391 END_SIGN
392 };
393
394 /*
395 * Constants for Fixing the MacAddress problem seen mostly on
396 * Alpha machines.
397 */
398 static const u64 fix_mac[] = {
399 0x0060000000000000ULL, 0x0060600000000000ULL,
400 0x0040600000000000ULL, 0x0000600000000000ULL,
401 0x0020600000000000ULL, 0x0060600000000000ULL,
402 0x0020600000000000ULL, 0x0060600000000000ULL,
403 0x0020600000000000ULL, 0x0060600000000000ULL,
404 0x0020600000000000ULL, 0x0060600000000000ULL,
405 0x0020600000000000ULL, 0x0060600000000000ULL,
406 0x0020600000000000ULL, 0x0060600000000000ULL,
407 0x0020600000000000ULL, 0x0060600000000000ULL,
408 0x0020600000000000ULL, 0x0060600000000000ULL,
409 0x0020600000000000ULL, 0x0060600000000000ULL,
410 0x0020600000000000ULL, 0x0060600000000000ULL,
411 0x0020600000000000ULL, 0x0000600000000000ULL,
412 0x0040600000000000ULL, 0x0060600000000000ULL,
413 END_SIGN
414 };
415
416 MODULE_LICENSE("GPL");
417 MODULE_VERSION(DRV_VERSION);
418
419
420 /* Module Loadable parameters. */
421 S2IO_PARM_INT(tx_fifo_num, FIFO_DEFAULT_NUM);
422 S2IO_PARM_INT(rx_ring_num, 1);
423 S2IO_PARM_INT(multiq, 0);
424 S2IO_PARM_INT(rx_ring_mode, 1);
425 S2IO_PARM_INT(use_continuous_tx_intrs, 1);
426 S2IO_PARM_INT(rmac_pause_time, 0x100);
427 S2IO_PARM_INT(mc_pause_threshold_q0q3, 187);
428 S2IO_PARM_INT(mc_pause_threshold_q4q7, 187);
429 S2IO_PARM_INT(shared_splits, 0);
430 S2IO_PARM_INT(tmac_util_period, 5);
431 S2IO_PARM_INT(rmac_util_period, 5);
432 S2IO_PARM_INT(l3l4hdr_size, 128);
433 /* 0 is no steering, 1 is Priority steering, 2 is Default steering */
434 S2IO_PARM_INT(tx_steering_type, TX_DEFAULT_STEERING);
435 /* Frequency of Rx desc syncs expressed as power of 2 */
436 S2IO_PARM_INT(rxsync_frequency, 3);
437 /* Interrupt type. Values can be 0(INTA), 2(MSI_X) */
438 S2IO_PARM_INT(intr_type, 2);
439 /* Large receive offload feature */
440
441 /* Max pkts to be aggregated by LRO at one time. If not specified,
442 * aggregation happens until we hit max IP pkt size(64K)
443 */
444 S2IO_PARM_INT(lro_max_pkts, 0xFFFF);
445 S2IO_PARM_INT(indicate_max_pkts, 0);
446
447 S2IO_PARM_INT(napi, 1);
448 S2IO_PARM_INT(vlan_tag_strip, NO_STRIP_IN_PROMISC);
449
450 static unsigned int tx_fifo_len[MAX_TX_FIFOS] =
451 {DEFAULT_FIFO_0_LEN, [1 ...(MAX_TX_FIFOS - 1)] = DEFAULT_FIFO_1_7_LEN};
452 static unsigned int rx_ring_sz[MAX_RX_RINGS] =
453 {[0 ...(MAX_RX_RINGS - 1)] = SMALL_BLK_CNT};
454 static unsigned int rts_frm_len[MAX_RX_RINGS] =
455 {[0 ...(MAX_RX_RINGS - 1)] = 0 };
456
457 module_param_array(tx_fifo_len, uint, NULL, 0);
458 module_param_array(rx_ring_sz, uint, NULL, 0);
459 module_param_array(rts_frm_len, uint, NULL, 0);
460
461 /*
462 * S2IO device table.
463 * This table lists all the devices that this driver supports.
464 */
465 static const struct pci_device_id s2io_tbl[] = {
466 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_S2IO_WIN,
467 PCI_ANY_ID, PCI_ANY_ID},
468 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_S2IO_UNI,
469 PCI_ANY_ID, PCI_ANY_ID},
470 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_HERC_WIN,
471 PCI_ANY_ID, PCI_ANY_ID},
472 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_HERC_UNI,
473 PCI_ANY_ID, PCI_ANY_ID},
474 {0,}
475 };
476
477 MODULE_DEVICE_TABLE(pci, s2io_tbl);
478
479 static const struct pci_error_handlers s2io_err_handler = {
480 .error_detected = s2io_io_error_detected,
481 .slot_reset = s2io_io_slot_reset,
482 .resume = s2io_io_resume,
483 };
484
485 static struct pci_driver s2io_driver = {
486 .name = "S2IO",
487 .id_table = s2io_tbl,
488 .probe = s2io_init_nic,
489 .remove = s2io_rem_nic,
490 .err_handler = &s2io_err_handler,
491 };
492
493 /* A simplifier macro used both by init and free shared_mem Fns(). */
494 #define TXD_MEM_PAGE_CNT(len, per_each) ((len+per_each - 1) / per_each)
495
496 /* netqueue manipulation helper functions */
497 static inline void s2io_stop_all_tx_queue(struct s2io_nic *sp)
498 {
499 if (!sp->config.multiq) {
500 int i;
501
502 for (i = 0; i < sp->config.tx_fifo_num; i++)
503 sp->mac_control.fifos[i].queue_state = FIFO_QUEUE_STOP;
504 }
505 netif_tx_stop_all_queues(sp->dev);
506 }
507
508 static inline void s2io_stop_tx_queue(struct s2io_nic *sp, int fifo_no)
509 {
510 if (!sp->config.multiq)
511 sp->mac_control.fifos[fifo_no].queue_state =
512 FIFO_QUEUE_STOP;
513
514 netif_tx_stop_all_queues(sp->dev);
515 }
516
517 static inline void s2io_start_all_tx_queue(struct s2io_nic *sp)
518 {
519 if (!sp->config.multiq) {
520 int i;
521
522 for (i = 0; i < sp->config.tx_fifo_num; i++)
523 sp->mac_control.fifos[i].queue_state = FIFO_QUEUE_START;
524 }
525 netif_tx_start_all_queues(sp->dev);
526 }
527
528 static inline void s2io_wake_all_tx_queue(struct s2io_nic *sp)
529 {
530 if (!sp->config.multiq) {
531 int i;
532
533 for (i = 0; i < sp->config.tx_fifo_num; i++)
534 sp->mac_control.fifos[i].queue_state = FIFO_QUEUE_START;
535 }
536 netif_tx_wake_all_queues(sp->dev);
537 }
538
539 static inline void s2io_wake_tx_queue(
540 struct fifo_info *fifo, int cnt, u8 multiq)
541 {
542
543 if (multiq) {
544 if (cnt && __netif_subqueue_stopped(fifo->dev, fifo->fifo_no))
545 netif_wake_subqueue(fifo->dev, fifo->fifo_no);
546 } else if (cnt && (fifo->queue_state == FIFO_QUEUE_STOP)) {
547 if (netif_queue_stopped(fifo->dev)) {
548 fifo->queue_state = FIFO_QUEUE_START;
549 netif_wake_queue(fifo->dev);
550 }
551 }
552 }
553
554 /**
555 * init_shared_mem - Allocation and Initialization of Memory
556 * @nic: Device private variable.
557 * Description: The function allocates all the memory areas shared
558 * between the NIC and the driver. This includes Tx descriptors,
559 * Rx descriptors and the statistics block.
560 */
561
562 static int init_shared_mem(struct s2io_nic *nic)
563 {
564 u32 size;
565 void *tmp_v_addr, *tmp_v_addr_next;
566 dma_addr_t tmp_p_addr, tmp_p_addr_next;
567 struct RxD_block *pre_rxd_blk = NULL;
568 int i, j, blk_cnt;
569 int lst_size, lst_per_page;
570 struct net_device *dev = nic->dev;
571 unsigned long tmp;
572 struct buffAdd *ba;
573 struct config_param *config = &nic->config;
574 struct mac_info *mac_control = &nic->mac_control;
575 unsigned long long mem_allocated = 0;
576
577 /* Allocation and initialization of TXDLs in FIFOs */
578 size = 0;
579 for (i = 0; i < config->tx_fifo_num; i++) {
580 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
581
582 size += tx_cfg->fifo_len;
583 }
584 if (size > MAX_AVAILABLE_TXDS) {
585 DBG_PRINT(ERR_DBG,
586 "Too many TxDs requested: %d, max supported: %d\n",
587 size, MAX_AVAILABLE_TXDS);
588 return -EINVAL;
589 }
590
591 size = 0;
592 for (i = 0; i < config->tx_fifo_num; i++) {
593 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
594
595 size = tx_cfg->fifo_len;
596 /*
597 * Legal values are from 2 to 8192
598 */
599 if (size < 2) {
600 DBG_PRINT(ERR_DBG, "Fifo %d: Invalid length (%d) - "
601 "Valid lengths are 2 through 8192\n",
602 i, size);
603 return -EINVAL;
604 }
605 }
606
607 lst_size = (sizeof(struct TxD) * config->max_txds);
608 lst_per_page = PAGE_SIZE / lst_size;
609
610 for (i = 0; i < config->tx_fifo_num; i++) {
611 struct fifo_info *fifo = &mac_control->fifos[i];
612 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
613 int fifo_len = tx_cfg->fifo_len;
614 int list_holder_size = fifo_len * sizeof(struct list_info_hold);
615
616 fifo->list_info = kzalloc(list_holder_size, GFP_KERNEL);
617 if (!fifo->list_info) {
618 DBG_PRINT(INFO_DBG, "Malloc failed for list_info\n");
619 return -ENOMEM;
620 }
621 mem_allocated += list_holder_size;
622 }
623 for (i = 0; i < config->tx_fifo_num; i++) {
624 int page_num = TXD_MEM_PAGE_CNT(config->tx_cfg[i].fifo_len,
625 lst_per_page);
626 struct fifo_info *fifo = &mac_control->fifos[i];
627 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
628
629 fifo->tx_curr_put_info.offset = 0;
630 fifo->tx_curr_put_info.fifo_len = tx_cfg->fifo_len - 1;
631 fifo->tx_curr_get_info.offset = 0;
632 fifo->tx_curr_get_info.fifo_len = tx_cfg->fifo_len - 1;
633 fifo->fifo_no = i;
634 fifo->nic = nic;
635 fifo->max_txds = MAX_SKB_FRAGS + 2;
636 fifo->dev = dev;
637
638 for (j = 0; j < page_num; j++) {
639 int k = 0;
640 dma_addr_t tmp_p;
641 void *tmp_v;
642 tmp_v = pci_alloc_consistent(nic->pdev,
643 PAGE_SIZE, &tmp_p);
644 if (!tmp_v) {
645 DBG_PRINT(INFO_DBG,
646 "pci_alloc_consistent failed for TxDL\n");
647 return -ENOMEM;
648 }
649 /* If we got a zero DMA address(can happen on
650 * certain platforms like PPC), reallocate.
651 * Store virtual address of page we don't want,
652 * to be freed later.
653 */
654 if (!tmp_p) {
655 mac_control->zerodma_virt_addr = tmp_v;
656 DBG_PRINT(INIT_DBG,
657 "%s: Zero DMA address for TxDL. "
658 "Virtual address %p\n",
659 dev->name, tmp_v);
660 tmp_v = pci_alloc_consistent(nic->pdev,
661 PAGE_SIZE, &tmp_p);
662 if (!tmp_v) {
663 DBG_PRINT(INFO_DBG,
664 "pci_alloc_consistent failed for TxDL\n");
665 return -ENOMEM;
666 }
667 mem_allocated += PAGE_SIZE;
668 }
669 while (k < lst_per_page) {
670 int l = (j * lst_per_page) + k;
671 if (l == tx_cfg->fifo_len)
672 break;
673 fifo->list_info[l].list_virt_addr =
674 tmp_v + (k * lst_size);
675 fifo->list_info[l].list_phy_addr =
676 tmp_p + (k * lst_size);
677 k++;
678 }
679 }
680 }
681
682 for (i = 0; i < config->tx_fifo_num; i++) {
683 struct fifo_info *fifo = &mac_control->fifos[i];
684 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
685
686 size = tx_cfg->fifo_len;
687 fifo->ufo_in_band_v = kcalloc(size, sizeof(u64), GFP_KERNEL);
688 if (!fifo->ufo_in_band_v)
689 return -ENOMEM;
690 mem_allocated += (size * sizeof(u64));
691 }
692
693 /* Allocation and initialization of RXDs in Rings */
694 size = 0;
695 for (i = 0; i < config->rx_ring_num; i++) {
696 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
697 struct ring_info *ring = &mac_control->rings[i];
698
699 if (rx_cfg->num_rxd % (rxd_count[nic->rxd_mode] + 1)) {
700 DBG_PRINT(ERR_DBG, "%s: Ring%d RxD count is not a "
701 "multiple of RxDs per Block\n",
702 dev->name, i);
703 return FAILURE;
704 }
705 size += rx_cfg->num_rxd;
706 ring->block_count = rx_cfg->num_rxd /
707 (rxd_count[nic->rxd_mode] + 1);
708 ring->pkt_cnt = rx_cfg->num_rxd - ring->block_count;
709 }
710 if (nic->rxd_mode == RXD_MODE_1)
711 size = (size * (sizeof(struct RxD1)));
712 else
713 size = (size * (sizeof(struct RxD3)));
714
715 for (i = 0; i < config->rx_ring_num; i++) {
716 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
717 struct ring_info *ring = &mac_control->rings[i];
718
719 ring->rx_curr_get_info.block_index = 0;
720 ring->rx_curr_get_info.offset = 0;
721 ring->rx_curr_get_info.ring_len = rx_cfg->num_rxd - 1;
722 ring->rx_curr_put_info.block_index = 0;
723 ring->rx_curr_put_info.offset = 0;
724 ring->rx_curr_put_info.ring_len = rx_cfg->num_rxd - 1;
725 ring->nic = nic;
726 ring->ring_no = i;
727
728 blk_cnt = rx_cfg->num_rxd / (rxd_count[nic->rxd_mode] + 1);
729 /* Allocating all the Rx blocks */
730 for (j = 0; j < blk_cnt; j++) {
731 struct rx_block_info *rx_blocks;
732 int l;
733
734 rx_blocks = &ring->rx_blocks[j];
735 size = SIZE_OF_BLOCK; /* size is always page size */
736 tmp_v_addr = pci_alloc_consistent(nic->pdev, size,
737 &tmp_p_addr);
738 if (tmp_v_addr == NULL) {
739 /*
740 * In case of failure, free_shared_mem()
741 * is called, which should free any
742 * memory that was alloced till the
743 * failure happened.
744 */
745 rx_blocks->block_virt_addr = tmp_v_addr;
746 return -ENOMEM;
747 }
748 mem_allocated += size;
749 memset(tmp_v_addr, 0, size);
750
751 size = sizeof(struct rxd_info) *
752 rxd_count[nic->rxd_mode];
753 rx_blocks->block_virt_addr = tmp_v_addr;
754 rx_blocks->block_dma_addr = tmp_p_addr;
755 rx_blocks->rxds = kmalloc(size, GFP_KERNEL);
756 if (!rx_blocks->rxds)
757 return -ENOMEM;
758 mem_allocated += size;
759 for (l = 0; l < rxd_count[nic->rxd_mode]; l++) {
760 rx_blocks->rxds[l].virt_addr =
761 rx_blocks->block_virt_addr +
762 (rxd_size[nic->rxd_mode] * l);
763 rx_blocks->rxds[l].dma_addr =
764 rx_blocks->block_dma_addr +
765 (rxd_size[nic->rxd_mode] * l);
766 }
767 }
768 /* Interlinking all Rx Blocks */
769 for (j = 0; j < blk_cnt; j++) {
770 int next = (j + 1) % blk_cnt;
771 tmp_v_addr = ring->rx_blocks[j].block_virt_addr;
772 tmp_v_addr_next = ring->rx_blocks[next].block_virt_addr;
773 tmp_p_addr = ring->rx_blocks[j].block_dma_addr;
774 tmp_p_addr_next = ring->rx_blocks[next].block_dma_addr;
775
776 pre_rxd_blk = tmp_v_addr;
777 pre_rxd_blk->reserved_2_pNext_RxD_block =
778 (unsigned long)tmp_v_addr_next;
779 pre_rxd_blk->pNext_RxD_Blk_physical =
780 (u64)tmp_p_addr_next;
781 }
782 }
783 if (nic->rxd_mode == RXD_MODE_3B) {
784 /*
785 * Allocation of Storages for buffer addresses in 2BUFF mode
786 * and the buffers as well.
787 */
788 for (i = 0; i < config->rx_ring_num; i++) {
789 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
790 struct ring_info *ring = &mac_control->rings[i];
791
792 blk_cnt = rx_cfg->num_rxd /
793 (rxd_count[nic->rxd_mode] + 1);
794 size = sizeof(struct buffAdd *) * blk_cnt;
795 ring->ba = kmalloc(size, GFP_KERNEL);
796 if (!ring->ba)
797 return -ENOMEM;
798 mem_allocated += size;
799 for (j = 0; j < blk_cnt; j++) {
800 int k = 0;
801
802 size = sizeof(struct buffAdd) *
803 (rxd_count[nic->rxd_mode] + 1);
804 ring->ba[j] = kmalloc(size, GFP_KERNEL);
805 if (!ring->ba[j])
806 return -ENOMEM;
807 mem_allocated += size;
808 while (k != rxd_count[nic->rxd_mode]) {
809 ba = &ring->ba[j][k];
810 size = BUF0_LEN + ALIGN_SIZE;
811 ba->ba_0_org = kmalloc(size, GFP_KERNEL);
812 if (!ba->ba_0_org)
813 return -ENOMEM;
814 mem_allocated += size;
815 tmp = (unsigned long)ba->ba_0_org;
816 tmp += ALIGN_SIZE;
817 tmp &= ~((unsigned long)ALIGN_SIZE);
818 ba->ba_0 = (void *)tmp;
819
820 size = BUF1_LEN + ALIGN_SIZE;
821 ba->ba_1_org = kmalloc(size, GFP_KERNEL);
822 if (!ba->ba_1_org)
823 return -ENOMEM;
824 mem_allocated += size;
825 tmp = (unsigned long)ba->ba_1_org;
826 tmp += ALIGN_SIZE;
827 tmp &= ~((unsigned long)ALIGN_SIZE);
828 ba->ba_1 = (void *)tmp;
829 k++;
830 }
831 }
832 }
833 }
834
835 /* Allocation and initialization of Statistics block */
836 size = sizeof(struct stat_block);
837 mac_control->stats_mem =
838 pci_alloc_consistent(nic->pdev, size,
839 &mac_control->stats_mem_phy);
840
841 if (!mac_control->stats_mem) {
842 /*
843 * In case of failure, free_shared_mem() is called, which
844 * should free any memory that was alloced till the
845 * failure happened.
846 */
847 return -ENOMEM;
848 }
849 mem_allocated += size;
850 mac_control->stats_mem_sz = size;
851
852 tmp_v_addr = mac_control->stats_mem;
853 mac_control->stats_info = tmp_v_addr;
854 memset(tmp_v_addr, 0, size);
855 DBG_PRINT(INIT_DBG, "%s: Ring Mem PHY: 0x%llx\n",
856 dev_name(&nic->pdev->dev), (unsigned long long)tmp_p_addr);
857 mac_control->stats_info->sw_stat.mem_allocated += mem_allocated;
858 return SUCCESS;
859 }
860
861 /**
862 * free_shared_mem - Free the allocated Memory
863 * @nic: Device private variable.
864 * Description: This function is to free all memory locations allocated by
865 * the init_shared_mem() function and return it to the kernel.
866 */
867
868 static void free_shared_mem(struct s2io_nic *nic)
869 {
870 int i, j, blk_cnt, size;
871 void *tmp_v_addr;
872 dma_addr_t tmp_p_addr;
873 int lst_size, lst_per_page;
874 struct net_device *dev;
875 int page_num = 0;
876 struct config_param *config;
877 struct mac_info *mac_control;
878 struct stat_block *stats;
879 struct swStat *swstats;
880
881 if (!nic)
882 return;
883
884 dev = nic->dev;
885
886 config = &nic->config;
887 mac_control = &nic->mac_control;
888 stats = mac_control->stats_info;
889 swstats = &stats->sw_stat;
890
891 lst_size = sizeof(struct TxD) * config->max_txds;
892 lst_per_page = PAGE_SIZE / lst_size;
893
894 for (i = 0; i < config->tx_fifo_num; i++) {
895 struct fifo_info *fifo = &mac_control->fifos[i];
896 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
897
898 page_num = TXD_MEM_PAGE_CNT(tx_cfg->fifo_len, lst_per_page);
899 for (j = 0; j < page_num; j++) {
900 int mem_blks = (j * lst_per_page);
901 struct list_info_hold *fli;
902
903 if (!fifo->list_info)
904 return;
905
906 fli = &fifo->list_info[mem_blks];
907 if (!fli->list_virt_addr)
908 break;
909 pci_free_consistent(nic->pdev, PAGE_SIZE,
910 fli->list_virt_addr,
911 fli->list_phy_addr);
912 swstats->mem_freed += PAGE_SIZE;
913 }
914 /* If we got a zero DMA address during allocation,
915 * free the page now
916 */
917 if (mac_control->zerodma_virt_addr) {
918 pci_free_consistent(nic->pdev, PAGE_SIZE,
919 mac_control->zerodma_virt_addr,
920 (dma_addr_t)0);
921 DBG_PRINT(INIT_DBG,
922 "%s: Freeing TxDL with zero DMA address. "
923 "Virtual address %p\n",
924 dev->name, mac_control->zerodma_virt_addr);
925 swstats->mem_freed += PAGE_SIZE;
926 }
927 kfree(fifo->list_info);
928 swstats->mem_freed += tx_cfg->fifo_len *
929 sizeof(struct list_info_hold);
930 }
931
932 size = SIZE_OF_BLOCK;
933 for (i = 0; i < config->rx_ring_num; i++) {
934 struct ring_info *ring = &mac_control->rings[i];
935
936 blk_cnt = ring->block_count;
937 for (j = 0; j < blk_cnt; j++) {
938 tmp_v_addr = ring->rx_blocks[j].block_virt_addr;
939 tmp_p_addr = ring->rx_blocks[j].block_dma_addr;
940 if (tmp_v_addr == NULL)
941 break;
942 pci_free_consistent(nic->pdev, size,
943 tmp_v_addr, tmp_p_addr);
944 swstats->mem_freed += size;
945 kfree(ring->rx_blocks[j].rxds);
946 swstats->mem_freed += sizeof(struct rxd_info) *
947 rxd_count[nic->rxd_mode];
948 }
949 }
950
951 if (nic->rxd_mode == RXD_MODE_3B) {
952 /* Freeing buffer storage addresses in 2BUFF mode. */
953 for (i = 0; i < config->rx_ring_num; i++) {
954 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
955 struct ring_info *ring = &mac_control->rings[i];
956
957 blk_cnt = rx_cfg->num_rxd /
958 (rxd_count[nic->rxd_mode] + 1);
959 for (j = 0; j < blk_cnt; j++) {
960 int k = 0;
961 if (!ring->ba[j])
962 continue;
963 while (k != rxd_count[nic->rxd_mode]) {
964 struct buffAdd *ba = &ring->ba[j][k];
965 kfree(ba->ba_0_org);
966 swstats->mem_freed +=
967 BUF0_LEN + ALIGN_SIZE;
968 kfree(ba->ba_1_org);
969 swstats->mem_freed +=
970 BUF1_LEN + ALIGN_SIZE;
971 k++;
972 }
973 kfree(ring->ba[j]);
974 swstats->mem_freed += sizeof(struct buffAdd) *
975 (rxd_count[nic->rxd_mode] + 1);
976 }
977 kfree(ring->ba);
978 swstats->mem_freed += sizeof(struct buffAdd *) *
979 blk_cnt;
980 }
981 }
982
983 for (i = 0; i < nic->config.tx_fifo_num; i++) {
984 struct fifo_info *fifo = &mac_control->fifos[i];
985 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
986
987 if (fifo->ufo_in_band_v) {
988 swstats->mem_freed += tx_cfg->fifo_len *
989 sizeof(u64);
990 kfree(fifo->ufo_in_band_v);
991 }
992 }
993
994 if (mac_control->stats_mem) {
995 swstats->mem_freed += mac_control->stats_mem_sz;
996 pci_free_consistent(nic->pdev,
997 mac_control->stats_mem_sz,
998 mac_control->stats_mem,
999 mac_control->stats_mem_phy);
1000 }
1001 }
1002
1003 /**
1004 * s2io_verify_pci_mode -
1005 */
1006
1007 static int s2io_verify_pci_mode(struct s2io_nic *nic)
1008 {
1009 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1010 register u64 val64 = 0;
1011 int mode;
1012
1013 val64 = readq(&bar0->pci_mode);
1014 mode = (u8)GET_PCI_MODE(val64);
1015
1016 if (val64 & PCI_MODE_UNKNOWN_MODE)
1017 return -1; /* Unknown PCI mode */
1018 return mode;
1019 }
1020
1021 #define NEC_VENID 0x1033
1022 #define NEC_DEVID 0x0125
1023 static int s2io_on_nec_bridge(struct pci_dev *s2io_pdev)
1024 {
1025 struct pci_dev *tdev = NULL;
1026 for_each_pci_dev(tdev) {
1027 if (tdev->vendor == NEC_VENID && tdev->device == NEC_DEVID) {
1028 if (tdev->bus == s2io_pdev->bus->parent) {
1029 pci_dev_put(tdev);
1030 return 1;
1031 }
1032 }
1033 }
1034 return 0;
1035 }
1036
1037 static int bus_speed[8] = {33, 133, 133, 200, 266, 133, 200, 266};
1038 /**
1039 * s2io_print_pci_mode -
1040 */
1041 static int s2io_print_pci_mode(struct s2io_nic *nic)
1042 {
1043 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1044 register u64 val64 = 0;
1045 int mode;
1046 struct config_param *config = &nic->config;
1047 const char *pcimode;
1048
1049 val64 = readq(&bar0->pci_mode);
1050 mode = (u8)GET_PCI_MODE(val64);
1051
1052 if (val64 & PCI_MODE_UNKNOWN_MODE)
1053 return -1; /* Unknown PCI mode */
1054
1055 config->bus_speed = bus_speed[mode];
1056
1057 if (s2io_on_nec_bridge(nic->pdev)) {
1058 DBG_PRINT(ERR_DBG, "%s: Device is on PCI-E bus\n",
1059 nic->dev->name);
1060 return mode;
1061 }
1062
1063 switch (mode) {
1064 case PCI_MODE_PCI_33:
1065 pcimode = "33MHz PCI bus";
1066 break;
1067 case PCI_MODE_PCI_66:
1068 pcimode = "66MHz PCI bus";
1069 break;
1070 case PCI_MODE_PCIX_M1_66:
1071 pcimode = "66MHz PCIX(M1) bus";
1072 break;
1073 case PCI_MODE_PCIX_M1_100:
1074 pcimode = "100MHz PCIX(M1) bus";
1075 break;
1076 case PCI_MODE_PCIX_M1_133:
1077 pcimode = "133MHz PCIX(M1) bus";
1078 break;
1079 case PCI_MODE_PCIX_M2_66:
1080 pcimode = "133MHz PCIX(M2) bus";
1081 break;
1082 case PCI_MODE_PCIX_M2_100:
1083 pcimode = "200MHz PCIX(M2) bus";
1084 break;
1085 case PCI_MODE_PCIX_M2_133:
1086 pcimode = "266MHz PCIX(M2) bus";
1087 break;
1088 default:
1089 pcimode = "unsupported bus!";
1090 mode = -1;
1091 }
1092
1093 DBG_PRINT(ERR_DBG, "%s: Device is on %d bit %s\n",
1094 nic->dev->name, val64 & PCI_MODE_32_BITS ? 32 : 64, pcimode);
1095
1096 return mode;
1097 }
1098
1099 /**
1100 * init_tti - Initialization transmit traffic interrupt scheme
1101 * @nic: device private variable
1102 * @link: link status (UP/DOWN) used to enable/disable continuous
1103 * transmit interrupts
1104 * Description: The function configures transmit traffic interrupts
1105 * Return Value: SUCCESS on success and
1106 * '-1' on failure
1107 */
1108
1109 static int init_tti(struct s2io_nic *nic, int link)
1110 {
1111 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1112 register u64 val64 = 0;
1113 int i;
1114 struct config_param *config = &nic->config;
1115
1116 for (i = 0; i < config->tx_fifo_num; i++) {
1117 /*
1118 * TTI Initialization. Default Tx timer gets us about
1119 * 250 interrupts per sec. Continuous interrupts are enabled
1120 * by default.
1121 */
1122 if (nic->device_type == XFRAME_II_DEVICE) {
1123 int count = (nic->config.bus_speed * 125)/2;
1124 val64 = TTI_DATA1_MEM_TX_TIMER_VAL(count);
1125 } else
1126 val64 = TTI_DATA1_MEM_TX_TIMER_VAL(0x2078);
1127
1128 val64 |= TTI_DATA1_MEM_TX_URNG_A(0xA) |
1129 TTI_DATA1_MEM_TX_URNG_B(0x10) |
1130 TTI_DATA1_MEM_TX_URNG_C(0x30) |
1131 TTI_DATA1_MEM_TX_TIMER_AC_EN;
1132 if (i == 0)
1133 if (use_continuous_tx_intrs && (link == LINK_UP))
1134 val64 |= TTI_DATA1_MEM_TX_TIMER_CI_EN;
1135 writeq(val64, &bar0->tti_data1_mem);
1136
1137 if (nic->config.intr_type == MSI_X) {
1138 val64 = TTI_DATA2_MEM_TX_UFC_A(0x10) |
1139 TTI_DATA2_MEM_TX_UFC_B(0x100) |
1140 TTI_DATA2_MEM_TX_UFC_C(0x200) |
1141 TTI_DATA2_MEM_TX_UFC_D(0x300);
1142 } else {
1143 if ((nic->config.tx_steering_type ==
1144 TX_DEFAULT_STEERING) &&
1145 (config->tx_fifo_num > 1) &&
1146 (i >= nic->udp_fifo_idx) &&
1147 (i < (nic->udp_fifo_idx +
1148 nic->total_udp_fifos)))
1149 val64 = TTI_DATA2_MEM_TX_UFC_A(0x50) |
1150 TTI_DATA2_MEM_TX_UFC_B(0x80) |
1151 TTI_DATA2_MEM_TX_UFC_C(0x100) |
1152 TTI_DATA2_MEM_TX_UFC_D(0x120);
1153 else
1154 val64 = TTI_DATA2_MEM_TX_UFC_A(0x10) |
1155 TTI_DATA2_MEM_TX_UFC_B(0x20) |
1156 TTI_DATA2_MEM_TX_UFC_C(0x40) |
1157 TTI_DATA2_MEM_TX_UFC_D(0x80);
1158 }
1159
1160 writeq(val64, &bar0->tti_data2_mem);
1161
1162 val64 = TTI_CMD_MEM_WE |
1163 TTI_CMD_MEM_STROBE_NEW_CMD |
1164 TTI_CMD_MEM_OFFSET(i);
1165 writeq(val64, &bar0->tti_command_mem);
1166
1167 if (wait_for_cmd_complete(&bar0->tti_command_mem,
1168 TTI_CMD_MEM_STROBE_NEW_CMD,
1169 S2IO_BIT_RESET) != SUCCESS)
1170 return FAILURE;
1171 }
1172
1173 return SUCCESS;
1174 }
1175
1176 /**
1177 * init_nic - Initialization of hardware
1178 * @nic: device private variable
1179 * Description: The function sequentially configures every block
1180 * of the H/W from their reset values.
1181 * Return Value: SUCCESS on success and
1182 * '-1' on failure (endian settings incorrect).
1183 */
1184
1185 static int init_nic(struct s2io_nic *nic)
1186 {
1187 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1188 struct net_device *dev = nic->dev;
1189 register u64 val64 = 0;
1190 void __iomem *add;
1191 u32 time;
1192 int i, j;
1193 int dtx_cnt = 0;
1194 unsigned long long mem_share;
1195 int mem_size;
1196 struct config_param *config = &nic->config;
1197 struct mac_info *mac_control = &nic->mac_control;
1198
1199 /* to set the swapper controle on the card */
1200 if (s2io_set_swapper(nic)) {
1201 DBG_PRINT(ERR_DBG, "ERROR: Setting Swapper failed\n");
1202 return -EIO;
1203 }
1204
1205 /*
1206 * Herc requires EOI to be removed from reset before XGXS, so..
1207 */
1208 if (nic->device_type & XFRAME_II_DEVICE) {
1209 val64 = 0xA500000000ULL;
1210 writeq(val64, &bar0->sw_reset);
1211 msleep(500);
1212 val64 = readq(&bar0->sw_reset);
1213 }
1214
1215 /* Remove XGXS from reset state */
1216 val64 = 0;
1217 writeq(val64, &bar0->sw_reset);
1218 msleep(500);
1219 val64 = readq(&bar0->sw_reset);
1220
1221 /* Ensure that it's safe to access registers by checking
1222 * RIC_RUNNING bit is reset. Check is valid only for XframeII.
1223 */
1224 if (nic->device_type == XFRAME_II_DEVICE) {
1225 for (i = 0; i < 50; i++) {
1226 val64 = readq(&bar0->adapter_status);
1227 if (!(val64 & ADAPTER_STATUS_RIC_RUNNING))
1228 break;
1229 msleep(10);
1230 }
1231 if (i == 50)
1232 return -ENODEV;
1233 }
1234
1235 /* Enable Receiving broadcasts */
1236 add = &bar0->mac_cfg;
1237 val64 = readq(&bar0->mac_cfg);
1238 val64 |= MAC_RMAC_BCAST_ENABLE;
1239 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1240 writel((u32)val64, add);
1241 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1242 writel((u32) (val64 >> 32), (add + 4));
1243
1244 /* Read registers in all blocks */
1245 val64 = readq(&bar0->mac_int_mask);
1246 val64 = readq(&bar0->mc_int_mask);
1247 val64 = readq(&bar0->xgxs_int_mask);
1248
1249 /* Set MTU */
1250 val64 = dev->mtu;
1251 writeq(vBIT(val64, 2, 14), &bar0->rmac_max_pyld_len);
1252
1253 if (nic->device_type & XFRAME_II_DEVICE) {
1254 while (herc_act_dtx_cfg[dtx_cnt] != END_SIGN) {
1255 SPECIAL_REG_WRITE(herc_act_dtx_cfg[dtx_cnt],
1256 &bar0->dtx_control, UF);
1257 if (dtx_cnt & 0x1)
1258 msleep(1); /* Necessary!! */
1259 dtx_cnt++;
1260 }
1261 } else {
1262 while (xena_dtx_cfg[dtx_cnt] != END_SIGN) {
1263 SPECIAL_REG_WRITE(xena_dtx_cfg[dtx_cnt],
1264 &bar0->dtx_control, UF);
1265 val64 = readq(&bar0->dtx_control);
1266 dtx_cnt++;
1267 }
1268 }
1269
1270 /* Tx DMA Initialization */
1271 val64 = 0;
1272 writeq(val64, &bar0->tx_fifo_partition_0);
1273 writeq(val64, &bar0->tx_fifo_partition_1);
1274 writeq(val64, &bar0->tx_fifo_partition_2);
1275 writeq(val64, &bar0->tx_fifo_partition_3);
1276
1277 for (i = 0, j = 0; i < config->tx_fifo_num; i++) {
1278 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
1279
1280 val64 |= vBIT(tx_cfg->fifo_len - 1, ((j * 32) + 19), 13) |
1281 vBIT(tx_cfg->fifo_priority, ((j * 32) + 5), 3);
1282
1283 if (i == (config->tx_fifo_num - 1)) {
1284 if (i % 2 == 0)
1285 i++;
1286 }
1287
1288 switch (i) {
1289 case 1:
1290 writeq(val64, &bar0->tx_fifo_partition_0);
1291 val64 = 0;
1292 j = 0;
1293 break;
1294 case 3:
1295 writeq(val64, &bar0->tx_fifo_partition_1);
1296 val64 = 0;
1297 j = 0;
1298 break;
1299 case 5:
1300 writeq(val64, &bar0->tx_fifo_partition_2);
1301 val64 = 0;
1302 j = 0;
1303 break;
1304 case 7:
1305 writeq(val64, &bar0->tx_fifo_partition_3);
1306 val64 = 0;
1307 j = 0;
1308 break;
1309 default:
1310 j++;
1311 break;
1312 }
1313 }
1314
1315 /*
1316 * Disable 4 PCCs for Xena1, 2 and 3 as per H/W bug
1317 * SXE-008 TRANSMIT DMA ARBITRATION ISSUE.
1318 */
1319 if ((nic->device_type == XFRAME_I_DEVICE) && (nic->pdev->revision < 4))
1320 writeq(PCC_ENABLE_FOUR, &bar0->pcc_enable);
1321
1322 val64 = readq(&bar0->tx_fifo_partition_0);
1323 DBG_PRINT(INIT_DBG, "Fifo partition at: 0x%p is: 0x%llx\n",
1324 &bar0->tx_fifo_partition_0, (unsigned long long)val64);
1325
1326 /*
1327 * Initialization of Tx_PA_CONFIG register to ignore packet
1328 * integrity checking.
1329 */
1330 val64 = readq(&bar0->tx_pa_cfg);
1331 val64 |= TX_PA_CFG_IGNORE_FRM_ERR |
1332 TX_PA_CFG_IGNORE_SNAP_OUI |
1333 TX_PA_CFG_IGNORE_LLC_CTRL |
1334 TX_PA_CFG_IGNORE_L2_ERR;
1335 writeq(val64, &bar0->tx_pa_cfg);
1336
1337 /* Rx DMA initialization. */
1338 val64 = 0;
1339 for (i = 0; i < config->rx_ring_num; i++) {
1340 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
1341
1342 val64 |= vBIT(rx_cfg->ring_priority, (5 + (i * 8)), 3);
1343 }
1344 writeq(val64, &bar0->rx_queue_priority);
1345
1346 /*
1347 * Allocating equal share of memory to all the
1348 * configured Rings.
1349 */
1350 val64 = 0;
1351 if (nic->device_type & XFRAME_II_DEVICE)
1352 mem_size = 32;
1353 else
1354 mem_size = 64;
1355
1356 for (i = 0; i < config->rx_ring_num; i++) {
1357 switch (i) {
1358 case 0:
1359 mem_share = (mem_size / config->rx_ring_num +
1360 mem_size % config->rx_ring_num);
1361 val64 |= RX_QUEUE_CFG_Q0_SZ(mem_share);
1362 continue;
1363 case 1:
1364 mem_share = (mem_size / config->rx_ring_num);
1365 val64 |= RX_QUEUE_CFG_Q1_SZ(mem_share);
1366 continue;
1367 case 2:
1368 mem_share = (mem_size / config->rx_ring_num);
1369 val64 |= RX_QUEUE_CFG_Q2_SZ(mem_share);
1370 continue;
1371 case 3:
1372 mem_share = (mem_size / config->rx_ring_num);
1373 val64 |= RX_QUEUE_CFG_Q3_SZ(mem_share);
1374 continue;
1375 case 4:
1376 mem_share = (mem_size / config->rx_ring_num);
1377 val64 |= RX_QUEUE_CFG_Q4_SZ(mem_share);
1378 continue;
1379 case 5:
1380 mem_share = (mem_size / config->rx_ring_num);
1381 val64 |= RX_QUEUE_CFG_Q5_SZ(mem_share);
1382 continue;
1383 case 6:
1384 mem_share = (mem_size / config->rx_ring_num);
1385 val64 |= RX_QUEUE_CFG_Q6_SZ(mem_share);
1386 continue;
1387 case 7:
1388 mem_share = (mem_size / config->rx_ring_num);
1389 val64 |= RX_QUEUE_CFG_Q7_SZ(mem_share);
1390 continue;
1391 }
1392 }
1393 writeq(val64, &bar0->rx_queue_cfg);
1394
1395 /*
1396 * Filling Tx round robin registers
1397 * as per the number of FIFOs for equal scheduling priority
1398 */
1399 switch (config->tx_fifo_num) {
1400 case 1:
1401 val64 = 0x0;
1402 writeq(val64, &bar0->tx_w_round_robin_0);
1403 writeq(val64, &bar0->tx_w_round_robin_1);
1404 writeq(val64, &bar0->tx_w_round_robin_2);
1405 writeq(val64, &bar0->tx_w_round_robin_3);
1406 writeq(val64, &bar0->tx_w_round_robin_4);
1407 break;
1408 case 2:
1409 val64 = 0x0001000100010001ULL;
1410 writeq(val64, &bar0->tx_w_round_robin_0);
1411 writeq(val64, &bar0->tx_w_round_robin_1);
1412 writeq(val64, &bar0->tx_w_round_robin_2);
1413 writeq(val64, &bar0->tx_w_round_robin_3);
1414 val64 = 0x0001000100000000ULL;
1415 writeq(val64, &bar0->tx_w_round_robin_4);
1416 break;
1417 case 3:
1418 val64 = 0x0001020001020001ULL;
1419 writeq(val64, &bar0->tx_w_round_robin_0);
1420 val64 = 0x0200010200010200ULL;
1421 writeq(val64, &bar0->tx_w_round_robin_1);
1422 val64 = 0x0102000102000102ULL;
1423 writeq(val64, &bar0->tx_w_round_robin_2);
1424 val64 = 0x0001020001020001ULL;
1425 writeq(val64, &bar0->tx_w_round_robin_3);
1426 val64 = 0x0200010200000000ULL;
1427 writeq(val64, &bar0->tx_w_round_robin_4);
1428 break;
1429 case 4:
1430 val64 = 0x0001020300010203ULL;
1431 writeq(val64, &bar0->tx_w_round_robin_0);
1432 writeq(val64, &bar0->tx_w_round_robin_1);
1433 writeq(val64, &bar0->tx_w_round_robin_2);
1434 writeq(val64, &bar0->tx_w_round_robin_3);
1435 val64 = 0x0001020300000000ULL;
1436 writeq(val64, &bar0->tx_w_round_robin_4);
1437 break;
1438 case 5:
1439 val64 = 0x0001020304000102ULL;
1440 writeq(val64, &bar0->tx_w_round_robin_0);
1441 val64 = 0x0304000102030400ULL;
1442 writeq(val64, &bar0->tx_w_round_robin_1);
1443 val64 = 0x0102030400010203ULL;
1444 writeq(val64, &bar0->tx_w_round_robin_2);
1445 val64 = 0x0400010203040001ULL;
1446 writeq(val64, &bar0->tx_w_round_robin_3);
1447 val64 = 0x0203040000000000ULL;
1448 writeq(val64, &bar0->tx_w_round_robin_4);
1449 break;
1450 case 6:
1451 val64 = 0x0001020304050001ULL;
1452 writeq(val64, &bar0->tx_w_round_robin_0);
1453 val64 = 0x0203040500010203ULL;
1454 writeq(val64, &bar0->tx_w_round_robin_1);
1455 val64 = 0x0405000102030405ULL;
1456 writeq(val64, &bar0->tx_w_round_robin_2);
1457 val64 = 0x0001020304050001ULL;
1458 writeq(val64, &bar0->tx_w_round_robin_3);
1459 val64 = 0x0203040500000000ULL;
1460 writeq(val64, &bar0->tx_w_round_robin_4);
1461 break;
1462 case 7:
1463 val64 = 0x0001020304050600ULL;
1464 writeq(val64, &bar0->tx_w_round_robin_0);
1465 val64 = 0x0102030405060001ULL;
1466 writeq(val64, &bar0->tx_w_round_robin_1);
1467 val64 = 0x0203040506000102ULL;
1468 writeq(val64, &bar0->tx_w_round_robin_2);
1469 val64 = 0x0304050600010203ULL;
1470 writeq(val64, &bar0->tx_w_round_robin_3);
1471 val64 = 0x0405060000000000ULL;
1472 writeq(val64, &bar0->tx_w_round_robin_4);
1473 break;
1474 case 8:
1475 val64 = 0x0001020304050607ULL;
1476 writeq(val64, &bar0->tx_w_round_robin_0);
1477 writeq(val64, &bar0->tx_w_round_robin_1);
1478 writeq(val64, &bar0->tx_w_round_robin_2);
1479 writeq(val64, &bar0->tx_w_round_robin_3);
1480 val64 = 0x0001020300000000ULL;
1481 writeq(val64, &bar0->tx_w_round_robin_4);
1482 break;
1483 }
1484
1485 /* Enable all configured Tx FIFO partitions */
1486 val64 = readq(&bar0->tx_fifo_partition_0);
1487 val64 |= (TX_FIFO_PARTITION_EN);
1488 writeq(val64, &bar0->tx_fifo_partition_0);
1489
1490 /* Filling the Rx round robin registers as per the
1491 * number of Rings and steering based on QoS with
1492 * equal priority.
1493 */
1494 switch (config->rx_ring_num) {
1495 case 1:
1496 val64 = 0x0;
1497 writeq(val64, &bar0->rx_w_round_robin_0);
1498 writeq(val64, &bar0->rx_w_round_robin_1);
1499 writeq(val64, &bar0->rx_w_round_robin_2);
1500 writeq(val64, &bar0->rx_w_round_robin_3);
1501 writeq(val64, &bar0->rx_w_round_robin_4);
1502
1503 val64 = 0x8080808080808080ULL;
1504 writeq(val64, &bar0->rts_qos_steering);
1505 break;
1506 case 2:
1507 val64 = 0x0001000100010001ULL;
1508 writeq(val64, &bar0->rx_w_round_robin_0);
1509 writeq(val64, &bar0->rx_w_round_robin_1);
1510 writeq(val64, &bar0->rx_w_round_robin_2);
1511 writeq(val64, &bar0->rx_w_round_robin_3);
1512 val64 = 0x0001000100000000ULL;
1513 writeq(val64, &bar0->rx_w_round_robin_4);
1514
1515 val64 = 0x8080808040404040ULL;
1516 writeq(val64, &bar0->rts_qos_steering);
1517 break;
1518 case 3:
1519 val64 = 0x0001020001020001ULL;
1520 writeq(val64, &bar0->rx_w_round_robin_0);
1521 val64 = 0x0200010200010200ULL;
1522 writeq(val64, &bar0->rx_w_round_robin_1);
1523 val64 = 0x0102000102000102ULL;
1524 writeq(val64, &bar0->rx_w_round_robin_2);
1525 val64 = 0x0001020001020001ULL;
1526 writeq(val64, &bar0->rx_w_round_robin_3);
1527 val64 = 0x0200010200000000ULL;
1528 writeq(val64, &bar0->rx_w_round_robin_4);
1529
1530 val64 = 0x8080804040402020ULL;
1531 writeq(val64, &bar0->rts_qos_steering);
1532 break;
1533 case 4:
1534 val64 = 0x0001020300010203ULL;
1535 writeq(val64, &bar0->rx_w_round_robin_0);
1536 writeq(val64, &bar0->rx_w_round_robin_1);
1537 writeq(val64, &bar0->rx_w_round_robin_2);
1538 writeq(val64, &bar0->rx_w_round_robin_3);
1539 val64 = 0x0001020300000000ULL;
1540 writeq(val64, &bar0->rx_w_round_robin_4);
1541
1542 val64 = 0x8080404020201010ULL;
1543 writeq(val64, &bar0->rts_qos_steering);
1544 break;
1545 case 5:
1546 val64 = 0x0001020304000102ULL;
1547 writeq(val64, &bar0->rx_w_round_robin_0);
1548 val64 = 0x0304000102030400ULL;
1549 writeq(val64, &bar0->rx_w_round_robin_1);
1550 val64 = 0x0102030400010203ULL;
1551 writeq(val64, &bar0->rx_w_round_robin_2);
1552 val64 = 0x0400010203040001ULL;
1553 writeq(val64, &bar0->rx_w_round_robin_3);
1554 val64 = 0x0203040000000000ULL;
1555 writeq(val64, &bar0->rx_w_round_robin_4);
1556
1557 val64 = 0x8080404020201008ULL;
1558 writeq(val64, &bar0->rts_qos_steering);
1559 break;
1560 case 6:
1561 val64 = 0x0001020304050001ULL;
1562 writeq(val64, &bar0->rx_w_round_robin_0);
1563 val64 = 0x0203040500010203ULL;
1564 writeq(val64, &bar0->rx_w_round_robin_1);
1565 val64 = 0x0405000102030405ULL;
1566 writeq(val64, &bar0->rx_w_round_robin_2);
1567 val64 = 0x0001020304050001ULL;
1568 writeq(val64, &bar0->rx_w_round_robin_3);
1569 val64 = 0x0203040500000000ULL;
1570 writeq(val64, &bar0->rx_w_round_robin_4);
1571
1572 val64 = 0x8080404020100804ULL;
1573 writeq(val64, &bar0->rts_qos_steering);
1574 break;
1575 case 7:
1576 val64 = 0x0001020304050600ULL;
1577 writeq(val64, &bar0->rx_w_round_robin_0);
1578 val64 = 0x0102030405060001ULL;
1579 writeq(val64, &bar0->rx_w_round_robin_1);
1580 val64 = 0x0203040506000102ULL;
1581 writeq(val64, &bar0->rx_w_round_robin_2);
1582 val64 = 0x0304050600010203ULL;
1583 writeq(val64, &bar0->rx_w_round_robin_3);
1584 val64 = 0x0405060000000000ULL;
1585 writeq(val64, &bar0->rx_w_round_robin_4);
1586
1587 val64 = 0x8080402010080402ULL;
1588 writeq(val64, &bar0->rts_qos_steering);
1589 break;
1590 case 8:
1591 val64 = 0x0001020304050607ULL;
1592 writeq(val64, &bar0->rx_w_round_robin_0);
1593 writeq(val64, &bar0->rx_w_round_robin_1);
1594 writeq(val64, &bar0->rx_w_round_robin_2);
1595 writeq(val64, &bar0->rx_w_round_robin_3);
1596 val64 = 0x0001020300000000ULL;
1597 writeq(val64, &bar0->rx_w_round_robin_4);
1598
1599 val64 = 0x8040201008040201ULL;
1600 writeq(val64, &bar0->rts_qos_steering);
1601 break;
1602 }
1603
1604 /* UDP Fix */
1605 val64 = 0;
1606 for (i = 0; i < 8; i++)
1607 writeq(val64, &bar0->rts_frm_len_n[i]);
1608
1609 /* Set the default rts frame length for the rings configured */
1610 val64 = MAC_RTS_FRM_LEN_SET(dev->mtu+22);
1611 for (i = 0 ; i < config->rx_ring_num ; i++)
1612 writeq(val64, &bar0->rts_frm_len_n[i]);
1613
1614 /* Set the frame length for the configured rings
1615 * desired by the user
1616 */
1617 for (i = 0; i < config->rx_ring_num; i++) {
1618 /* If rts_frm_len[i] == 0 then it is assumed that user not
1619 * specified frame length steering.
1620 * If the user provides the frame length then program
1621 * the rts_frm_len register for those values or else
1622 * leave it as it is.
1623 */
1624 if (rts_frm_len[i] != 0) {
1625 writeq(MAC_RTS_FRM_LEN_SET(rts_frm_len[i]),
1626 &bar0->rts_frm_len_n[i]);
1627 }
1628 }
1629
1630 /* Disable differentiated services steering logic */
1631 for (i = 0; i < 64; i++) {
1632 if (rts_ds_steer(nic, i, 0) == FAILURE) {
1633 DBG_PRINT(ERR_DBG,
1634 "%s: rts_ds_steer failed on codepoint %d\n",
1635 dev->name, i);
1636 return -ENODEV;
1637 }
1638 }
1639
1640 /* Program statistics memory */
1641 writeq(mac_control->stats_mem_phy, &bar0->stat_addr);
1642
1643 if (nic->device_type == XFRAME_II_DEVICE) {
1644 val64 = STAT_BC(0x320);
1645 writeq(val64, &bar0->stat_byte_cnt);
1646 }
1647
1648 /*
1649 * Initializing the sampling rate for the device to calculate the
1650 * bandwidth utilization.
1651 */
1652 val64 = MAC_TX_LINK_UTIL_VAL(tmac_util_period) |
1653 MAC_RX_LINK_UTIL_VAL(rmac_util_period);
1654 writeq(val64, &bar0->mac_link_util);
1655
1656 /*
1657 * Initializing the Transmit and Receive Traffic Interrupt
1658 * Scheme.
1659 */
1660
1661 /* Initialize TTI */
1662 if (SUCCESS != init_tti(nic, nic->last_link_state))
1663 return -ENODEV;
1664
1665 /* RTI Initialization */
1666 if (nic->device_type == XFRAME_II_DEVICE) {
1667 /*
1668 * Programmed to generate Apprx 500 Intrs per
1669 * second
1670 */
1671 int count = (nic->config.bus_speed * 125)/4;
1672 val64 = RTI_DATA1_MEM_RX_TIMER_VAL(count);
1673 } else
1674 val64 = RTI_DATA1_MEM_RX_TIMER_VAL(0xFFF);
1675 val64 |= RTI_DATA1_MEM_RX_URNG_A(0xA) |
1676 RTI_DATA1_MEM_RX_URNG_B(0x10) |
1677 RTI_DATA1_MEM_RX_URNG_C(0x30) |
1678 RTI_DATA1_MEM_RX_TIMER_AC_EN;
1679
1680 writeq(val64, &bar0->rti_data1_mem);
1681
1682 val64 = RTI_DATA2_MEM_RX_UFC_A(0x1) |
1683 RTI_DATA2_MEM_RX_UFC_B(0x2) ;
1684 if (nic->config.intr_type == MSI_X)
1685 val64 |= (RTI_DATA2_MEM_RX_UFC_C(0x20) |
1686 RTI_DATA2_MEM_RX_UFC_D(0x40));
1687 else
1688 val64 |= (RTI_DATA2_MEM_RX_UFC_C(0x40) |
1689 RTI_DATA2_MEM_RX_UFC_D(0x80));
1690 writeq(val64, &bar0->rti_data2_mem);
1691
1692 for (i = 0; i < config->rx_ring_num; i++) {
1693 val64 = RTI_CMD_MEM_WE |
1694 RTI_CMD_MEM_STROBE_NEW_CMD |
1695 RTI_CMD_MEM_OFFSET(i);
1696 writeq(val64, &bar0->rti_command_mem);
1697
1698 /*
1699 * Once the operation completes, the Strobe bit of the
1700 * command register will be reset. We poll for this
1701 * particular condition. We wait for a maximum of 500ms
1702 * for the operation to complete, if it's not complete
1703 * by then we return error.
1704 */
1705 time = 0;
1706 while (true) {
1707 val64 = readq(&bar0->rti_command_mem);
1708 if (!(val64 & RTI_CMD_MEM_STROBE_NEW_CMD))
1709 break;
1710
1711 if (time > 10) {
1712 DBG_PRINT(ERR_DBG, "%s: RTI init failed\n",
1713 dev->name);
1714 return -ENODEV;
1715 }
1716 time++;
1717 msleep(50);
1718 }
1719 }
1720
1721 /*
1722 * Initializing proper values as Pause threshold into all
1723 * the 8 Queues on Rx side.
1724 */
1725 writeq(0xffbbffbbffbbffbbULL, &bar0->mc_pause_thresh_q0q3);
1726 writeq(0xffbbffbbffbbffbbULL, &bar0->mc_pause_thresh_q4q7);
1727
1728 /* Disable RMAC PAD STRIPPING */
1729 add = &bar0->mac_cfg;
1730 val64 = readq(&bar0->mac_cfg);
1731 val64 &= ~(MAC_CFG_RMAC_STRIP_PAD);
1732 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1733 writel((u32) (val64), add);
1734 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1735 writel((u32) (val64 >> 32), (add + 4));
1736 val64 = readq(&bar0->mac_cfg);
1737
1738 /* Enable FCS stripping by adapter */
1739 add = &bar0->mac_cfg;
1740 val64 = readq(&bar0->mac_cfg);
1741 val64 |= MAC_CFG_RMAC_STRIP_FCS;
1742 if (nic->device_type == XFRAME_II_DEVICE)
1743 writeq(val64, &bar0->mac_cfg);
1744 else {
1745 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1746 writel((u32) (val64), add);
1747 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1748 writel((u32) (val64 >> 32), (add + 4));
1749 }
1750
1751 /*
1752 * Set the time value to be inserted in the pause frame
1753 * generated by xena.
1754 */
1755 val64 = readq(&bar0->rmac_pause_cfg);
1756 val64 &= ~(RMAC_PAUSE_HG_PTIME(0xffff));
1757 val64 |= RMAC_PAUSE_HG_PTIME(nic->mac_control.rmac_pause_time);
1758 writeq(val64, &bar0->rmac_pause_cfg);
1759
1760 /*
1761 * Set the Threshold Limit for Generating the pause frame
1762 * If the amount of data in any Queue exceeds ratio of
1763 * (mac_control.mc_pause_threshold_q0q3 or q4q7)/256
1764 * pause frame is generated
1765 */
1766 val64 = 0;
1767 for (i = 0; i < 4; i++) {
1768 val64 |= (((u64)0xFF00 |
1769 nic->mac_control.mc_pause_threshold_q0q3)
1770 << (i * 2 * 8));
1771 }
1772 writeq(val64, &bar0->mc_pause_thresh_q0q3);
1773
1774 val64 = 0;
1775 for (i = 0; i < 4; i++) {
1776 val64 |= (((u64)0xFF00 |
1777 nic->mac_control.mc_pause_threshold_q4q7)
1778 << (i * 2 * 8));
1779 }
1780 writeq(val64, &bar0->mc_pause_thresh_q4q7);
1781
1782 /*
1783 * TxDMA will stop Read request if the number of read split has
1784 * exceeded the limit pointed by shared_splits
1785 */
1786 val64 = readq(&bar0->pic_control);
1787 val64 |= PIC_CNTL_SHARED_SPLITS(shared_splits);
1788 writeq(val64, &bar0->pic_control);
1789
1790 if (nic->config.bus_speed == 266) {
1791 writeq(TXREQTO_VAL(0x7f) | TXREQTO_EN, &bar0->txreqtimeout);
1792 writeq(0x0, &bar0->read_retry_delay);
1793 writeq(0x0, &bar0->write_retry_delay);
1794 }
1795
1796 /*
1797 * Programming the Herc to split every write transaction
1798 * that does not start on an ADB to reduce disconnects.
1799 */
1800 if (nic->device_type == XFRAME_II_DEVICE) {
1801 val64 = FAULT_BEHAVIOUR | EXT_REQ_EN |
1802 MISC_LINK_STABILITY_PRD(3);
1803 writeq(val64, &bar0->misc_control);
1804 val64 = readq(&bar0->pic_control2);
1805 val64 &= ~(s2BIT(13)|s2BIT(14)|s2BIT(15));
1806 writeq(val64, &bar0->pic_control2);
1807 }
1808 if (strstr(nic->product_name, "CX4")) {
1809 val64 = TMAC_AVG_IPG(0x17);
1810 writeq(val64, &bar0->tmac_avg_ipg);
1811 }
1812
1813 return SUCCESS;
1814 }
1815 #define LINK_UP_DOWN_INTERRUPT 1
1816 #define MAC_RMAC_ERR_TIMER 2
1817
1818 static int s2io_link_fault_indication(struct s2io_nic *nic)
1819 {
1820 if (nic->device_type == XFRAME_II_DEVICE)
1821 return LINK_UP_DOWN_INTERRUPT;
1822 else
1823 return MAC_RMAC_ERR_TIMER;
1824 }
1825
1826 /**
1827 * do_s2io_write_bits - update alarm bits in alarm register
1828 * @value: alarm bits
1829 * @flag: interrupt status
1830 * @addr: address value
1831 * Description: update alarm bits in alarm register
1832 * Return Value:
1833 * NONE.
1834 */
1835 static void do_s2io_write_bits(u64 value, int flag, void __iomem *addr)
1836 {
1837 u64 temp64;
1838
1839 temp64 = readq(addr);
1840
1841 if (flag == ENABLE_INTRS)
1842 temp64 &= ~((u64)value);
1843 else
1844 temp64 |= ((u64)value);
1845 writeq(temp64, addr);
1846 }
1847
1848 static void en_dis_err_alarms(struct s2io_nic *nic, u16 mask, int flag)
1849 {
1850 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1851 register u64 gen_int_mask = 0;
1852 u64 interruptible;
1853
1854 writeq(DISABLE_ALL_INTRS, &bar0->general_int_mask);
1855 if (mask & TX_DMA_INTR) {
1856 gen_int_mask |= TXDMA_INT_M;
1857
1858 do_s2io_write_bits(TXDMA_TDA_INT | TXDMA_PFC_INT |
1859 TXDMA_PCC_INT | TXDMA_TTI_INT |
1860 TXDMA_LSO_INT | TXDMA_TPA_INT |
1861 TXDMA_SM_INT, flag, &bar0->txdma_int_mask);
1862
1863 do_s2io_write_bits(PFC_ECC_DB_ERR | PFC_SM_ERR_ALARM |
1864 PFC_MISC_0_ERR | PFC_MISC_1_ERR |
1865 PFC_PCIX_ERR | PFC_ECC_SG_ERR, flag,
1866 &bar0->pfc_err_mask);
1867
1868 do_s2io_write_bits(TDA_Fn_ECC_DB_ERR | TDA_SM0_ERR_ALARM |
1869 TDA_SM1_ERR_ALARM | TDA_Fn_ECC_SG_ERR |
1870 TDA_PCIX_ERR, flag, &bar0->tda_err_mask);
1871
1872 do_s2io_write_bits(PCC_FB_ECC_DB_ERR | PCC_TXB_ECC_DB_ERR |
1873 PCC_SM_ERR_ALARM | PCC_WR_ERR_ALARM |
1874 PCC_N_SERR | PCC_6_COF_OV_ERR |
1875 PCC_7_COF_OV_ERR | PCC_6_LSO_OV_ERR |
1876 PCC_7_LSO_OV_ERR | PCC_FB_ECC_SG_ERR |
1877 PCC_TXB_ECC_SG_ERR,
1878 flag, &bar0->pcc_err_mask);
1879
1880 do_s2io_write_bits(TTI_SM_ERR_ALARM | TTI_ECC_SG_ERR |
1881 TTI_ECC_DB_ERR, flag, &bar0->tti_err_mask);
1882
1883 do_s2io_write_bits(LSO6_ABORT | LSO7_ABORT |
1884 LSO6_SM_ERR_ALARM | LSO7_SM_ERR_ALARM |
1885 LSO6_SEND_OFLOW | LSO7_SEND_OFLOW,
1886 flag, &bar0->lso_err_mask);
1887
1888 do_s2io_write_bits(TPA_SM_ERR_ALARM | TPA_TX_FRM_DROP,
1889 flag, &bar0->tpa_err_mask);
1890
1891 do_s2io_write_bits(SM_SM_ERR_ALARM, flag, &bar0->sm_err_mask);
1892 }
1893
1894 if (mask & TX_MAC_INTR) {
1895 gen_int_mask |= TXMAC_INT_M;
1896 do_s2io_write_bits(MAC_INT_STATUS_TMAC_INT, flag,
1897 &bar0->mac_int_mask);
1898 do_s2io_write_bits(TMAC_TX_BUF_OVRN | TMAC_TX_SM_ERR |
1899 TMAC_ECC_SG_ERR | TMAC_ECC_DB_ERR |
1900 TMAC_DESC_ECC_SG_ERR | TMAC_DESC_ECC_DB_ERR,
1901 flag, &bar0->mac_tmac_err_mask);
1902 }
1903
1904 if (mask & TX_XGXS_INTR) {
1905 gen_int_mask |= TXXGXS_INT_M;
1906 do_s2io_write_bits(XGXS_INT_STATUS_TXGXS, flag,
1907 &bar0->xgxs_int_mask);
1908 do_s2io_write_bits(TXGXS_ESTORE_UFLOW | TXGXS_TX_SM_ERR |
1909 TXGXS_ECC_SG_ERR | TXGXS_ECC_DB_ERR,
1910 flag, &bar0->xgxs_txgxs_err_mask);
1911 }
1912
1913 if (mask & RX_DMA_INTR) {
1914 gen_int_mask |= RXDMA_INT_M;
1915 do_s2io_write_bits(RXDMA_INT_RC_INT_M | RXDMA_INT_RPA_INT_M |
1916 RXDMA_INT_RDA_INT_M | RXDMA_INT_RTI_INT_M,
1917 flag, &bar0->rxdma_int_mask);
1918 do_s2io_write_bits(RC_PRCn_ECC_DB_ERR | RC_FTC_ECC_DB_ERR |
1919 RC_PRCn_SM_ERR_ALARM | RC_FTC_SM_ERR_ALARM |
1920 RC_PRCn_ECC_SG_ERR | RC_FTC_ECC_SG_ERR |
1921 RC_RDA_FAIL_WR_Rn, flag, &bar0->rc_err_mask);
1922 do_s2io_write_bits(PRC_PCI_AB_RD_Rn | PRC_PCI_AB_WR_Rn |
1923 PRC_PCI_AB_F_WR_Rn | PRC_PCI_DP_RD_Rn |
1924 PRC_PCI_DP_WR_Rn | PRC_PCI_DP_F_WR_Rn, flag,
1925 &bar0->prc_pcix_err_mask);
1926 do_s2io_write_bits(RPA_SM_ERR_ALARM | RPA_CREDIT_ERR |
1927 RPA_ECC_SG_ERR | RPA_ECC_DB_ERR, flag,
1928 &bar0->rpa_err_mask);
1929 do_s2io_write_bits(RDA_RXDn_ECC_DB_ERR | RDA_FRM_ECC_DB_N_AERR |
1930 RDA_SM1_ERR_ALARM | RDA_SM0_ERR_ALARM |
1931 RDA_RXD_ECC_DB_SERR | RDA_RXDn_ECC_SG_ERR |
1932 RDA_FRM_ECC_SG_ERR |
1933 RDA_MISC_ERR|RDA_PCIX_ERR,
1934 flag, &bar0->rda_err_mask);
1935 do_s2io_write_bits(RTI_SM_ERR_ALARM |
1936 RTI_ECC_SG_ERR | RTI_ECC_DB_ERR,
1937 flag, &bar0->rti_err_mask);
1938 }
1939
1940 if (mask & RX_MAC_INTR) {
1941 gen_int_mask |= RXMAC_INT_M;
1942 do_s2io_write_bits(MAC_INT_STATUS_RMAC_INT, flag,
1943 &bar0->mac_int_mask);
1944 interruptible = (RMAC_RX_BUFF_OVRN | RMAC_RX_SM_ERR |
1945 RMAC_UNUSED_INT | RMAC_SINGLE_ECC_ERR |
1946 RMAC_DOUBLE_ECC_ERR);
1947 if (s2io_link_fault_indication(nic) == MAC_RMAC_ERR_TIMER)
1948 interruptible |= RMAC_LINK_STATE_CHANGE_INT;
1949 do_s2io_write_bits(interruptible,
1950 flag, &bar0->mac_rmac_err_mask);
1951 }
1952
1953 if (mask & RX_XGXS_INTR) {
1954 gen_int_mask |= RXXGXS_INT_M;
1955 do_s2io_write_bits(XGXS_INT_STATUS_RXGXS, flag,
1956 &bar0->xgxs_int_mask);
1957 do_s2io_write_bits(RXGXS_ESTORE_OFLOW | RXGXS_RX_SM_ERR, flag,
1958 &bar0->xgxs_rxgxs_err_mask);
1959 }
1960
1961 if (mask & MC_INTR) {
1962 gen_int_mask |= MC_INT_M;
1963 do_s2io_write_bits(MC_INT_MASK_MC_INT,
1964 flag, &bar0->mc_int_mask);
1965 do_s2io_write_bits(MC_ERR_REG_SM_ERR | MC_ERR_REG_ECC_ALL_SNG |
1966 MC_ERR_REG_ECC_ALL_DBL | PLL_LOCK_N, flag,
1967 &bar0->mc_err_mask);
1968 }
1969 nic->general_int_mask = gen_int_mask;
1970
1971 /* Remove this line when alarm interrupts are enabled */
1972 nic->general_int_mask = 0;
1973 }
1974
1975 /**
1976 * en_dis_able_nic_intrs - Enable or Disable the interrupts
1977 * @nic: device private variable,
1978 * @mask: A mask indicating which Intr block must be modified and,
1979 * @flag: A flag indicating whether to enable or disable the Intrs.
1980 * Description: This function will either disable or enable the interrupts
1981 * depending on the flag argument. The mask argument can be used to
1982 * enable/disable any Intr block.
1983 * Return Value: NONE.
1984 */
1985
1986 static void en_dis_able_nic_intrs(struct s2io_nic *nic, u16 mask, int flag)
1987 {
1988 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1989 register u64 temp64 = 0, intr_mask = 0;
1990
1991 intr_mask = nic->general_int_mask;
1992
1993 /* Top level interrupt classification */
1994 /* PIC Interrupts */
1995 if (mask & TX_PIC_INTR) {
1996 /* Enable PIC Intrs in the general intr mask register */
1997 intr_mask |= TXPIC_INT_M;
1998 if (flag == ENABLE_INTRS) {
1999 /*
2000 * If Hercules adapter enable GPIO otherwise
2001 * disable all PCIX, Flash, MDIO, IIC and GPIO
2002 * interrupts for now.
2003 * TODO
2004 */
2005 if (s2io_link_fault_indication(nic) ==
2006 LINK_UP_DOWN_INTERRUPT) {
2007 do_s2io_write_bits(PIC_INT_GPIO, flag,
2008 &bar0->pic_int_mask);
2009 do_s2io_write_bits(GPIO_INT_MASK_LINK_UP, flag,
2010 &bar0->gpio_int_mask);
2011 } else
2012 writeq(DISABLE_ALL_INTRS, &bar0->pic_int_mask);
2013 } else if (flag == DISABLE_INTRS) {
2014 /*
2015 * Disable PIC Intrs in the general
2016 * intr mask register
2017 */
2018 writeq(DISABLE_ALL_INTRS, &bar0->pic_int_mask);
2019 }
2020 }
2021
2022 /* Tx traffic interrupts */
2023 if (mask & TX_TRAFFIC_INTR) {
2024 intr_mask |= TXTRAFFIC_INT_M;
2025 if (flag == ENABLE_INTRS) {
2026 /*
2027 * Enable all the Tx side interrupts
2028 * writing 0 Enables all 64 TX interrupt levels
2029 */
2030 writeq(0x0, &bar0->tx_traffic_mask);
2031 } else if (flag == DISABLE_INTRS) {
2032 /*
2033 * Disable Tx Traffic Intrs in the general intr mask
2034 * register.
2035 */
2036 writeq(DISABLE_ALL_INTRS, &bar0->tx_traffic_mask);
2037 }
2038 }
2039
2040 /* Rx traffic interrupts */
2041 if (mask & RX_TRAFFIC_INTR) {
2042 intr_mask |= RXTRAFFIC_INT_M;
2043 if (flag == ENABLE_INTRS) {
2044 /* writing 0 Enables all 8 RX interrupt levels */
2045 writeq(0x0, &bar0->rx_traffic_mask);
2046 } else if (flag == DISABLE_INTRS) {
2047 /*
2048 * Disable Rx Traffic Intrs in the general intr mask
2049 * register.
2050 */
2051 writeq(DISABLE_ALL_INTRS, &bar0->rx_traffic_mask);
2052 }
2053 }
2054
2055 temp64 = readq(&bar0->general_int_mask);
2056 if (flag == ENABLE_INTRS)
2057 temp64 &= ~((u64)intr_mask);
2058 else
2059 temp64 = DISABLE_ALL_INTRS;
2060 writeq(temp64, &bar0->general_int_mask);
2061
2062 nic->general_int_mask = readq(&bar0->general_int_mask);
2063 }
2064
2065 /**
2066 * verify_pcc_quiescent- Checks for PCC quiescent state
2067 * Return: 1 If PCC is quiescence
2068 * 0 If PCC is not quiescence
2069 */
2070 static int verify_pcc_quiescent(struct s2io_nic *sp, int flag)
2071 {
2072 int ret = 0, herc;
2073 struct XENA_dev_config __iomem *bar0 = sp->bar0;
2074 u64 val64 = readq(&bar0->adapter_status);
2075
2076 herc = (sp->device_type == XFRAME_II_DEVICE);
2077
2078 if (flag == false) {
2079 if ((!herc && (sp->pdev->revision >= 4)) || herc) {
2080 if (!(val64 & ADAPTER_STATUS_RMAC_PCC_IDLE))
2081 ret = 1;
2082 } else {
2083 if (!(val64 & ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE))
2084 ret = 1;
2085 }
2086 } else {
2087 if ((!herc && (sp->pdev->revision >= 4)) || herc) {
2088 if (((val64 & ADAPTER_STATUS_RMAC_PCC_IDLE) ==
2089 ADAPTER_STATUS_RMAC_PCC_IDLE))
2090 ret = 1;
2091 } else {
2092 if (((val64 & ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE) ==
2093 ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE))
2094 ret = 1;
2095 }
2096 }
2097
2098 return ret;
2099 }
2100 /**
2101 * verify_xena_quiescence - Checks whether the H/W is ready
2102 * Description: Returns whether the H/W is ready to go or not. Depending
2103 * on whether adapter enable bit was written or not the comparison
2104 * differs and the calling function passes the input argument flag to
2105 * indicate this.
2106 * Return: 1 If xena is quiescence
2107 * 0 If Xena is not quiescence
2108 */
2109
2110 static int verify_xena_quiescence(struct s2io_nic *sp)
2111 {
2112 int mode;
2113 struct XENA_dev_config __iomem *bar0 = sp->bar0;
2114 u64 val64 = readq(&bar0->adapter_status);
2115 mode = s2io_verify_pci_mode(sp);
2116
2117 if (!(val64 & ADAPTER_STATUS_TDMA_READY)) {
2118 DBG_PRINT(ERR_DBG, "TDMA is not ready!\n");
2119 return 0;
2120 }
2121 if (!(val64 & ADAPTER_STATUS_RDMA_READY)) {
2122 DBG_PRINT(ERR_DBG, "RDMA is not ready!\n");
2123 return 0;
2124 }
2125 if (!(val64 & ADAPTER_STATUS_PFC_READY)) {
2126 DBG_PRINT(ERR_DBG, "PFC is not ready!\n");
2127 return 0;
2128 }
2129 if (!(val64 & ADAPTER_STATUS_TMAC_BUF_EMPTY)) {
2130 DBG_PRINT(ERR_DBG, "TMAC BUF is not empty!\n");
2131 return 0;
2132 }
2133 if (!(val64 & ADAPTER_STATUS_PIC_QUIESCENT)) {
2134 DBG_PRINT(ERR_DBG, "PIC is not QUIESCENT!\n");
2135 return 0;
2136 }
2137 if (!(val64 & ADAPTER_STATUS_MC_DRAM_READY)) {
2138 DBG_PRINT(ERR_DBG, "MC_DRAM is not ready!\n");
2139 return 0;
2140 }
2141 if (!(val64 & ADAPTER_STATUS_MC_QUEUES_READY)) {
2142 DBG_PRINT(ERR_DBG, "MC_QUEUES is not ready!\n");
2143 return 0;
2144 }
2145 if (!(val64 & ADAPTER_STATUS_M_PLL_LOCK)) {
2146 DBG_PRINT(ERR_DBG, "M_PLL is not locked!\n");
2147 return 0;
2148 }
2149
2150 /*
2151 * In PCI 33 mode, the P_PLL is not used, and therefore,
2152 * the the P_PLL_LOCK bit in the adapter_status register will
2153 * not be asserted.
2154 */
2155 if (!(val64 & ADAPTER_STATUS_P_PLL_LOCK) &&
2156 sp->device_type == XFRAME_II_DEVICE &&
2157 mode != PCI_MODE_PCI_33) {
2158 DBG_PRINT(ERR_DBG, "P_PLL is not locked!\n");
2159 return 0;
2160 }
2161 if (!((val64 & ADAPTER_STATUS_RC_PRC_QUIESCENT) ==
2162 ADAPTER_STATUS_RC_PRC_QUIESCENT)) {
2163 DBG_PRINT(ERR_DBG, "RC_PRC is not QUIESCENT!\n");
2164 return 0;
2165 }
2166 return 1;
2167 }
2168
2169 /**
2170 * fix_mac_address - Fix for Mac addr problem on Alpha platforms
2171 * @sp: Pointer to device specifc structure
2172 * Description :
2173 * New procedure to clear mac address reading problems on Alpha platforms
2174 *
2175 */
2176
2177 static void fix_mac_address(struct s2io_nic *sp)
2178 {
2179 struct XENA_dev_config __iomem *bar0 = sp->bar0;
2180 int i = 0;
2181
2182 while (fix_mac[i] != END_SIGN) {
2183 writeq(fix_mac[i++], &bar0->gpio_control);
2184 udelay(10);
2185 (void) readq(&bar0->gpio_control);
2186 }
2187 }
2188
2189 /**
2190 * start_nic - Turns the device on
2191 * @nic : device private variable.
2192 * Description:
2193 * This function actually turns the device on. Before this function is
2194 * called,all Registers are configured from their reset states
2195 * and shared memory is allocated but the NIC is still quiescent. On
2196 * calling this function, the device interrupts are cleared and the NIC is
2197 * literally switched on by writing into the adapter control register.
2198 * Return Value:
2199 * SUCCESS on success and -1 on failure.
2200 */
2201
2202 static int start_nic(struct s2io_nic *nic)
2203 {
2204 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2205 struct net_device *dev = nic->dev;
2206 register u64 val64 = 0;
2207 u16 subid, i;
2208 struct config_param *config = &nic->config;
2209 struct mac_info *mac_control = &nic->mac_control;
2210
2211 /* PRC Initialization and configuration */
2212 for (i = 0; i < config->rx_ring_num; i++) {
2213 struct ring_info *ring = &mac_control->rings[i];
2214
2215 writeq((u64)ring->rx_blocks[0].block_dma_addr,
2216 &bar0->prc_rxd0_n[i]);
2217
2218 val64 = readq(&bar0->prc_ctrl_n[i]);
2219 if (nic->rxd_mode == RXD_MODE_1)
2220 val64 |= PRC_CTRL_RC_ENABLED;
2221 else
2222 val64 |= PRC_CTRL_RC_ENABLED | PRC_CTRL_RING_MODE_3;
2223 if (nic->device_type == XFRAME_II_DEVICE)
2224 val64 |= PRC_CTRL_GROUP_READS;
2225 val64 &= ~PRC_CTRL_RXD_BACKOFF_INTERVAL(0xFFFFFF);
2226 val64 |= PRC_CTRL_RXD_BACKOFF_INTERVAL(0x1000);
2227 writeq(val64, &bar0->prc_ctrl_n[i]);
2228 }
2229
2230 if (nic->rxd_mode == RXD_MODE_3B) {
2231 /* Enabling 2 buffer mode by writing into Rx_pa_cfg reg. */
2232 val64 = readq(&bar0->rx_pa_cfg);
2233 val64 |= RX_PA_CFG_IGNORE_L2_ERR;
2234 writeq(val64, &bar0->rx_pa_cfg);
2235 }
2236
2237 if (vlan_tag_strip == 0) {
2238 val64 = readq(&bar0->rx_pa_cfg);
2239 val64 &= ~RX_PA_CFG_STRIP_VLAN_TAG;
2240 writeq(val64, &bar0->rx_pa_cfg);
2241 nic->vlan_strip_flag = 0;
2242 }
2243
2244 /*
2245 * Enabling MC-RLDRAM. After enabling the device, we timeout
2246 * for around 100ms, which is approximately the time required
2247 * for the device to be ready for operation.
2248 */
2249 val64 = readq(&bar0->mc_rldram_mrs);
2250 val64 |= MC_RLDRAM_QUEUE_SIZE_ENABLE | MC_RLDRAM_MRS_ENABLE;
2251 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF);
2252 val64 = readq(&bar0->mc_rldram_mrs);
2253
2254 msleep(100); /* Delay by around 100 ms. */
2255
2256 /* Enabling ECC Protection. */
2257 val64 = readq(&bar0->adapter_control);
2258 val64 &= ~ADAPTER_ECC_EN;
2259 writeq(val64, &bar0->adapter_control);
2260
2261 /*
2262 * Verify if the device is ready to be enabled, if so enable
2263 * it.
2264 */
2265 val64 = readq(&bar0->adapter_status);
2266 if (!verify_xena_quiescence(nic)) {
2267 DBG_PRINT(ERR_DBG, "%s: device is not ready, "
2268 "Adapter status reads: 0x%llx\n",
2269 dev->name, (unsigned long long)val64);
2270 return FAILURE;
2271 }
2272
2273 /*
2274 * With some switches, link might be already up at this point.
2275 * Because of this weird behavior, when we enable laser,
2276 * we may not get link. We need to handle this. We cannot
2277 * figure out which switch is misbehaving. So we are forced to
2278 * make a global change.
2279 */
2280
2281 /* Enabling Laser. */
2282 val64 = readq(&bar0->adapter_control);
2283 val64 |= ADAPTER_EOI_TX_ON;
2284 writeq(val64, &bar0->adapter_control);
2285
2286 if (s2io_link_fault_indication(nic) == MAC_RMAC_ERR_TIMER) {
2287 /*
2288 * Dont see link state interrupts initially on some switches,
2289 * so directly scheduling the link state task here.
2290 */
2291 schedule_work(&nic->set_link_task);
2292 }
2293 /* SXE-002: Initialize link and activity LED */
2294 subid = nic->pdev->subsystem_device;
2295 if (((subid & 0xFF) >= 0x07) &&
2296 (nic->device_type == XFRAME_I_DEVICE)) {
2297 val64 = readq(&bar0->gpio_control);
2298 val64 |= 0x0000800000000000ULL;
2299 writeq(val64, &bar0->gpio_control);
2300 val64 = 0x0411040400000000ULL;
2301 writeq(val64, (void __iomem *)bar0 + 0x2700);
2302 }
2303
2304 return SUCCESS;
2305 }
2306 /**
2307 * s2io_txdl_getskb - Get the skb from txdl, unmap and return skb
2308 */
2309 static struct sk_buff *s2io_txdl_getskb(struct fifo_info *fifo_data,
2310 struct TxD *txdlp, int get_off)
2311 {
2312 struct s2io_nic *nic = fifo_data->nic;
2313 struct sk_buff *skb;
2314 struct TxD *txds;
2315 u16 j, frg_cnt;
2316
2317 txds = txdlp;
2318 if (txds->Host_Control == (u64)(long)fifo_data->ufo_in_band_v) {
2319 pci_unmap_single(nic->pdev, (dma_addr_t)txds->Buffer_Pointer,
2320 sizeof(u64), PCI_DMA_TODEVICE);
2321 txds++;
2322 }
2323
2324 skb = (struct sk_buff *)((unsigned long)txds->Host_Control);
2325 if (!skb) {
2326 memset(txdlp, 0, (sizeof(struct TxD) * fifo_data->max_txds));
2327 return NULL;
2328 }
2329 pci_unmap_single(nic->pdev, (dma_addr_t)txds->Buffer_Pointer,
2330 skb_headlen(skb), PCI_DMA_TODEVICE);
2331 frg_cnt = skb_shinfo(skb)->nr_frags;
2332 if (frg_cnt) {
2333 txds++;
2334 for (j = 0; j < frg_cnt; j++, txds++) {
2335 const skb_frag_t *frag = &skb_shinfo(skb)->frags[j];
2336 if (!txds->Buffer_Pointer)
2337 break;
2338 pci_unmap_page(nic->pdev,
2339 (dma_addr_t)txds->Buffer_Pointer,
2340 skb_frag_size(frag), PCI_DMA_TODEVICE);
2341 }
2342 }
2343 memset(txdlp, 0, (sizeof(struct TxD) * fifo_data->max_txds));
2344 return skb;
2345 }
2346
2347 /**
2348 * free_tx_buffers - Free all queued Tx buffers
2349 * @nic : device private variable.
2350 * Description:
2351 * Free all queued Tx buffers.
2352 * Return Value: void
2353 */
2354
2355 static void free_tx_buffers(struct s2io_nic *nic)
2356 {
2357 struct net_device *dev = nic->dev;
2358 struct sk_buff *skb;
2359 struct TxD *txdp;
2360 int i, j;
2361 int cnt = 0;
2362 struct config_param *config = &nic->config;
2363 struct mac_info *mac_control = &nic->mac_control;
2364 struct stat_block *stats = mac_control->stats_info;
2365 struct swStat *swstats = &stats->sw_stat;
2366
2367 for (i = 0; i < config->tx_fifo_num; i++) {
2368 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
2369 struct fifo_info *fifo = &mac_control->fifos[i];
2370 unsigned long flags;
2371
2372 spin_lock_irqsave(&fifo->tx_lock, flags);
2373 for (j = 0; j < tx_cfg->fifo_len; j++) {
2374 txdp = fifo->list_info[j].list_virt_addr;
2375 skb = s2io_txdl_getskb(&mac_control->fifos[i], txdp, j);
2376 if (skb) {
2377 swstats->mem_freed += skb->truesize;
2378 dev_kfree_skb(skb);
2379 cnt++;
2380 }
2381 }
2382 DBG_PRINT(INTR_DBG,
2383 "%s: forcibly freeing %d skbs on FIFO%d\n",
2384 dev->name, cnt, i);
2385 fifo->tx_curr_get_info.offset = 0;
2386 fifo->tx_curr_put_info.offset = 0;
2387 spin_unlock_irqrestore(&fifo->tx_lock, flags);
2388 }
2389 }
2390
2391 /**
2392 * stop_nic - To stop the nic
2393 * @nic ; device private variable.
2394 * Description:
2395 * This function does exactly the opposite of what the start_nic()
2396 * function does. This function is called to stop the device.
2397 * Return Value:
2398 * void.
2399 */
2400
2401 static void stop_nic(struct s2io_nic *nic)
2402 {
2403 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2404 register u64 val64 = 0;
2405 u16 interruptible;
2406
2407 /* Disable all interrupts */
2408 en_dis_err_alarms(nic, ENA_ALL_INTRS, DISABLE_INTRS);
2409 interruptible = TX_TRAFFIC_INTR | RX_TRAFFIC_INTR;
2410 interruptible |= TX_PIC_INTR;
2411 en_dis_able_nic_intrs(nic, interruptible, DISABLE_INTRS);
2412
2413 /* Clearing Adapter_En bit of ADAPTER_CONTROL Register */
2414 val64 = readq(&bar0->adapter_control);
2415 val64 &= ~(ADAPTER_CNTL_EN);
2416 writeq(val64, &bar0->adapter_control);
2417 }
2418
2419 /**
2420 * fill_rx_buffers - Allocates the Rx side skbs
2421 * @ring_info: per ring structure
2422 * @from_card_up: If this is true, we will map the buffer to get
2423 * the dma address for buf0 and buf1 to give it to the card.
2424 * Else we will sync the already mapped buffer to give it to the card.
2425 * Description:
2426 * The function allocates Rx side skbs and puts the physical
2427 * address of these buffers into the RxD buffer pointers, so that the NIC
2428 * can DMA the received frame into these locations.
2429 * The NIC supports 3 receive modes, viz
2430 * 1. single buffer,
2431 * 2. three buffer and
2432 * 3. Five buffer modes.
2433 * Each mode defines how many fragments the received frame will be split
2434 * up into by the NIC. The frame is split into L3 header, L4 Header,
2435 * L4 payload in three buffer mode and in 5 buffer mode, L4 payload itself
2436 * is split into 3 fragments. As of now only single buffer mode is
2437 * supported.
2438 * Return Value:
2439 * SUCCESS on success or an appropriate -ve value on failure.
2440 */
2441 static int fill_rx_buffers(struct s2io_nic *nic, struct ring_info *ring,
2442 int from_card_up)
2443 {
2444 struct sk_buff *skb;
2445 struct RxD_t *rxdp;
2446 int off, size, block_no, block_no1;
2447 u32 alloc_tab = 0;
2448 u32 alloc_cnt;
2449 u64 tmp;
2450 struct buffAdd *ba;
2451 struct RxD_t *first_rxdp = NULL;
2452 u64 Buffer0_ptr = 0, Buffer1_ptr = 0;
2453 struct RxD1 *rxdp1;
2454 struct RxD3 *rxdp3;
2455 struct swStat *swstats = &ring->nic->mac_control.stats_info->sw_stat;
2456
2457 alloc_cnt = ring->pkt_cnt - ring->rx_bufs_left;
2458
2459 block_no1 = ring->rx_curr_get_info.block_index;
2460 while (alloc_tab < alloc_cnt) {
2461 block_no = ring->rx_curr_put_info.block_index;
2462
2463 off = ring->rx_curr_put_info.offset;
2464
2465 rxdp = ring->rx_blocks[block_no].rxds[off].virt_addr;
2466
2467 if ((block_no == block_no1) &&
2468 (off == ring->rx_curr_get_info.offset) &&
2469 (rxdp->Host_Control)) {
2470 DBG_PRINT(INTR_DBG, "%s: Get and Put info equated\n",
2471 ring->dev->name);
2472 goto end;
2473 }
2474 if (off && (off == ring->rxd_count)) {
2475 ring->rx_curr_put_info.block_index++;
2476 if (ring->rx_curr_put_info.block_index ==
2477 ring->block_count)
2478 ring->rx_curr_put_info.block_index = 0;
2479 block_no = ring->rx_curr_put_info.block_index;
2480 off = 0;
2481 ring->rx_curr_put_info.offset = off;
2482 rxdp = ring->rx_blocks[block_no].block_virt_addr;
2483 DBG_PRINT(INTR_DBG, "%s: Next block at: %p\n",
2484 ring->dev->name, rxdp);
2485
2486 }
2487
2488 if ((rxdp->Control_1 & RXD_OWN_XENA) &&
2489 ((ring->rxd_mode == RXD_MODE_3B) &&
2490 (rxdp->Control_2 & s2BIT(0)))) {
2491 ring->rx_curr_put_info.offset = off;
2492 goto end;
2493 }
2494 /* calculate size of skb based on ring mode */
2495 size = ring->mtu +
2496 HEADER_ETHERNET_II_802_3_SIZE +
2497 HEADER_802_2_SIZE + HEADER_SNAP_SIZE;
2498 if (ring->rxd_mode == RXD_MODE_1)
2499 size += NET_IP_ALIGN;
2500 else
2501 size = ring->mtu + ALIGN_SIZE + BUF0_LEN + 4;
2502
2503 /* allocate skb */
2504 skb = netdev_alloc_skb(nic->dev, size);
2505 if (!skb) {
2506 DBG_PRINT(INFO_DBG, "%s: Could not allocate skb\n",
2507 ring->dev->name);
2508 if (first_rxdp) {
2509 dma_wmb();
2510 first_rxdp->Control_1 |= RXD_OWN_XENA;
2511 }
2512 swstats->mem_alloc_fail_cnt++;
2513
2514 return -ENOMEM ;
2515 }
2516 swstats->mem_allocated += skb->truesize;
2517
2518 if (ring->rxd_mode == RXD_MODE_1) {
2519 /* 1 buffer mode - normal operation mode */
2520 rxdp1 = (struct RxD1 *)rxdp;
2521 memset(rxdp, 0, sizeof(struct RxD1));
2522 skb_reserve(skb, NET_IP_ALIGN);
2523 rxdp1->Buffer0_ptr =
2524 pci_map_single(ring->pdev, skb->data,
2525 size - NET_IP_ALIGN,
2526 PCI_DMA_FROMDEVICE);
2527 if (pci_dma_mapping_error(nic->pdev,
2528 rxdp1->Buffer0_ptr))
2529 goto pci_map_failed;
2530
2531 rxdp->Control_2 =
2532 SET_BUFFER0_SIZE_1(size - NET_IP_ALIGN);
2533 rxdp->Host_Control = (unsigned long)skb;
2534 } else if (ring->rxd_mode == RXD_MODE_3B) {
2535 /*
2536 * 2 buffer mode -
2537 * 2 buffer mode provides 128
2538 * byte aligned receive buffers.
2539 */
2540
2541 rxdp3 = (struct RxD3 *)rxdp;
2542 /* save buffer pointers to avoid frequent dma mapping */
2543 Buffer0_ptr = rxdp3->Buffer0_ptr;
2544 Buffer1_ptr = rxdp3->Buffer1_ptr;
2545 memset(rxdp, 0, sizeof(struct RxD3));
2546 /* restore the buffer pointers for dma sync*/
2547 rxdp3->Buffer0_ptr = Buffer0_ptr;
2548 rxdp3->Buffer1_ptr = Buffer1_ptr;
2549
2550 ba = &ring->ba[block_no][off];
2551 skb_reserve(skb, BUF0_LEN);
2552 tmp = (u64)(unsigned long)skb->data;
2553 tmp += ALIGN_SIZE;
2554 tmp &= ~ALIGN_SIZE;
2555 skb->data = (void *) (unsigned long)tmp;
2556 skb_reset_tail_pointer(skb);
2557
2558 if (from_card_up) {
2559 rxdp3->Buffer0_ptr =
2560 pci_map_single(ring->pdev, ba->ba_0,
2561 BUF0_LEN,
2562 PCI_DMA_FROMDEVICE);
2563 if (pci_dma_mapping_error(nic->pdev,
2564 rxdp3->Buffer0_ptr))
2565 goto pci_map_failed;
2566 } else
2567 pci_dma_sync_single_for_device(ring->pdev,
2568 (dma_addr_t)rxdp3->Buffer0_ptr,
2569 BUF0_LEN,
2570 PCI_DMA_FROMDEVICE);
2571
2572 rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
2573 if (ring->rxd_mode == RXD_MODE_3B) {
2574 /* Two buffer mode */
2575
2576 /*
2577 * Buffer2 will have L3/L4 header plus
2578 * L4 payload
2579 */
2580 rxdp3->Buffer2_ptr = pci_map_single(ring->pdev,
2581 skb->data,
2582 ring->mtu + 4,
2583 PCI_DMA_FROMDEVICE);
2584
2585 if (pci_dma_mapping_error(nic->pdev,
2586 rxdp3->Buffer2_ptr))
2587 goto pci_map_failed;
2588
2589 if (from_card_up) {
2590 rxdp3->Buffer1_ptr =
2591 pci_map_single(ring->pdev,
2592 ba->ba_1,
2593 BUF1_LEN,
2594 PCI_DMA_FROMDEVICE);
2595
2596 if (pci_dma_mapping_error(nic->pdev,
2597 rxdp3->Buffer1_ptr)) {
2598 pci_unmap_single(ring->pdev,
2599 (dma_addr_t)(unsigned long)
2600 skb->data,
2601 ring->mtu + 4,
2602 PCI_DMA_FROMDEVICE);
2603 goto pci_map_failed;
2604 }
2605 }
2606 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
2607 rxdp->Control_2 |= SET_BUFFER2_SIZE_3
2608 (ring->mtu + 4);
2609 }
2610 rxdp->Control_2 |= s2BIT(0);
2611 rxdp->Host_Control = (unsigned long) (skb);
2612 }
2613 if (alloc_tab & ((1 << rxsync_frequency) - 1))
2614 rxdp->Control_1 |= RXD_OWN_XENA;
2615 off++;
2616 if (off == (ring->rxd_count + 1))
2617 off = 0;
2618 ring->rx_curr_put_info.offset = off;
2619
2620 rxdp->Control_2 |= SET_RXD_MARKER;
2621 if (!(alloc_tab & ((1 << rxsync_frequency) - 1))) {
2622 if (first_rxdp) {
2623 dma_wmb();
2624 first_rxdp->Control_1 |= RXD_OWN_XENA;
2625 }
2626 first_rxdp = rxdp;
2627 }
2628 ring->rx_bufs_left += 1;
2629 alloc_tab++;
2630 }
2631
2632 end:
2633 /* Transfer ownership of first descriptor to adapter just before
2634 * exiting. Before that, use memory barrier so that ownership
2635 * and other fields are seen by adapter correctly.
2636 */
2637 if (first_rxdp) {
2638 dma_wmb();
2639 first_rxdp->Control_1 |= RXD_OWN_XENA;
2640 }
2641
2642 return SUCCESS;
2643
2644 pci_map_failed:
2645 swstats->pci_map_fail_cnt++;
2646 swstats->mem_freed += skb->truesize;
2647 dev_kfree_skb_irq(skb);
2648 return -ENOMEM;
2649 }
2650
2651 static void free_rxd_blk(struct s2io_nic *sp, int ring_no, int blk)
2652 {
2653 struct net_device *dev = sp->dev;
2654 int j;
2655 struct sk_buff *skb;
2656 struct RxD_t *rxdp;
2657 struct RxD1 *rxdp1;
2658 struct RxD3 *rxdp3;
2659 struct mac_info *mac_control = &sp->mac_control;
2660 struct stat_block *stats = mac_control->stats_info;
2661 struct swStat *swstats = &stats->sw_stat;
2662
2663 for (j = 0 ; j < rxd_count[sp->rxd_mode]; j++) {
2664 rxdp = mac_control->rings[ring_no].
2665 rx_blocks[blk].rxds[j].virt_addr;
2666 skb = (struct sk_buff *)((unsigned long)rxdp->Host_Control);
2667 if (!skb)
2668 continue;
2669 if (sp->rxd_mode == RXD_MODE_1) {
2670 rxdp1 = (struct RxD1 *)rxdp;
2671 pci_unmap_single(sp->pdev,
2672 (dma_addr_t)rxdp1->Buffer0_ptr,
2673 dev->mtu +
2674 HEADER_ETHERNET_II_802_3_SIZE +
2675 HEADER_802_2_SIZE + HEADER_SNAP_SIZE,
2676 PCI_DMA_FROMDEVICE);
2677 memset(rxdp, 0, sizeof(struct RxD1));
2678 } else if (sp->rxd_mode == RXD_MODE_3B) {
2679 rxdp3 = (struct RxD3 *)rxdp;
2680 pci_unmap_single(sp->pdev,
2681 (dma_addr_t)rxdp3->Buffer0_ptr,
2682 BUF0_LEN,
2683 PCI_DMA_FROMDEVICE);
2684 pci_unmap_single(sp->pdev,
2685 (dma_addr_t)rxdp3->Buffer1_ptr,
2686 BUF1_LEN,
2687 PCI_DMA_FROMDEVICE);
2688 pci_unmap_single(sp->pdev,
2689 (dma_addr_t)rxdp3->Buffer2_ptr,
2690 dev->mtu + 4,
2691 PCI_DMA_FROMDEVICE);
2692 memset(rxdp, 0, sizeof(struct RxD3));
2693 }
2694 swstats->mem_freed += skb->truesize;
2695 dev_kfree_skb(skb);
2696 mac_control->rings[ring_no].rx_bufs_left -= 1;
2697 }
2698 }
2699
2700 /**
2701 * free_rx_buffers - Frees all Rx buffers
2702 * @sp: device private variable.
2703 * Description:
2704 * This function will free all Rx buffers allocated by host.
2705 * Return Value:
2706 * NONE.
2707 */
2708
2709 static void free_rx_buffers(struct s2io_nic *sp)
2710 {
2711 struct net_device *dev = sp->dev;
2712 int i, blk = 0, buf_cnt = 0;
2713 struct config_param *config = &sp->config;
2714 struct mac_info *mac_control = &sp->mac_control;
2715
2716 for (i = 0; i < config->rx_ring_num; i++) {
2717 struct ring_info *ring = &mac_control->rings[i];
2718
2719 for (blk = 0; blk < rx_ring_sz[i]; blk++)
2720 free_rxd_blk(sp, i, blk);
2721
2722 ring->rx_curr_put_info.block_index = 0;
2723 ring->rx_curr_get_info.block_index = 0;
2724 ring->rx_curr_put_info.offset = 0;
2725 ring->rx_curr_get_info.offset = 0;
2726 ring->rx_bufs_left = 0;
2727 DBG_PRINT(INIT_DBG, "%s: Freed 0x%x Rx Buffers on ring%d\n",
2728 dev->name, buf_cnt, i);
2729 }
2730 }
2731
2732 static int s2io_chk_rx_buffers(struct s2io_nic *nic, struct ring_info *ring)
2733 {
2734 if (fill_rx_buffers(nic, ring, 0) == -ENOMEM) {
2735 DBG_PRINT(INFO_DBG, "%s: Out of memory in Rx Intr!!\n",
2736 ring->dev->name);
2737 }
2738 return 0;
2739 }
2740
2741 /**
2742 * s2io_poll - Rx interrupt handler for NAPI support
2743 * @napi : pointer to the napi structure.
2744 * @budget : The number of packets that were budgeted to be processed
2745 * during one pass through the 'Poll" function.
2746 * Description:
2747 * Comes into picture only if NAPI support has been incorporated. It does
2748 * the same thing that rx_intr_handler does, but not in a interrupt context
2749 * also It will process only a given number of packets.
2750 * Return value:
2751 * 0 on success and 1 if there are No Rx packets to be processed.
2752 */
2753
2754 static int s2io_poll_msix(struct napi_struct *napi, int budget)
2755 {
2756 struct ring_info *ring = container_of(napi, struct ring_info, napi);
2757 struct net_device *dev = ring->dev;
2758 int pkts_processed = 0;
2759 u8 __iomem *addr = NULL;
2760 u8 val8 = 0;
2761 struct s2io_nic *nic = netdev_priv(dev);
2762 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2763 int budget_org = budget;
2764
2765 if (unlikely(!is_s2io_card_up(nic)))
2766 return 0;
2767
2768 pkts_processed = rx_intr_handler(ring, budget);
2769 s2io_chk_rx_buffers(nic, ring);
2770
2771 if (pkts_processed < budget_org) {
2772 napi_complete_done(napi, pkts_processed);
2773 /*Re Enable MSI-Rx Vector*/
2774 addr = (u8 __iomem *)&bar0->xmsi_mask_reg;
2775 addr += 7 - ring->ring_no;
2776 val8 = (ring->ring_no == 0) ? 0x3f : 0xbf;
2777 writeb(val8, addr);
2778 val8 = readb(addr);
2779 }
2780 return pkts_processed;
2781 }
2782
2783 static int s2io_poll_inta(struct napi_struct *napi, int budget)
2784 {
2785 struct s2io_nic *nic = container_of(napi, struct s2io_nic, napi);
2786 int pkts_processed = 0;
2787 int ring_pkts_processed, i;
2788 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2789 int budget_org = budget;
2790 struct config_param *config = &nic->config;
2791 struct mac_info *mac_control = &nic->mac_control;
2792
2793 if (unlikely(!is_s2io_card_up(nic)))
2794 return 0;
2795
2796 for (i = 0; i < config->rx_ring_num; i++) {
2797 struct ring_info *ring = &mac_control->rings[i];
2798 ring_pkts_processed = rx_intr_handler(ring, budget);
2799 s2io_chk_rx_buffers(nic, ring);
2800 pkts_processed += ring_pkts_processed;
2801 budget -= ring_pkts_processed;
2802 if (budget <= 0)
2803 break;
2804 }
2805 if (pkts_processed < budget_org) {
2806 napi_complete_done(napi, pkts_processed);
2807 /* Re enable the Rx interrupts for the ring */
2808 writeq(0, &bar0->rx_traffic_mask);
2809 readl(&bar0->rx_traffic_mask);
2810 }
2811 return pkts_processed;
2812 }
2813
2814 #ifdef CONFIG_NET_POLL_CONTROLLER
2815 /**
2816 * s2io_netpoll - netpoll event handler entry point
2817 * @dev : pointer to the device structure.
2818 * Description:
2819 * This function will be called by upper layer to check for events on the
2820 * interface in situations where interrupts are disabled. It is used for
2821 * specific in-kernel networking tasks, such as remote consoles and kernel
2822 * debugging over the network (example netdump in RedHat).
2823 */
2824 static void s2io_netpoll(struct net_device *dev)
2825 {
2826 struct s2io_nic *nic = netdev_priv(dev);
2827 const int irq = nic->pdev->irq;
2828 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2829 u64 val64 = 0xFFFFFFFFFFFFFFFFULL;
2830 int i;
2831 struct config_param *config = &nic->config;
2832 struct mac_info *mac_control = &nic->mac_control;
2833
2834 if (pci_channel_offline(nic->pdev))
2835 return;
2836
2837 disable_irq(irq);
2838
2839 writeq(val64, &bar0->rx_traffic_int);
2840 writeq(val64, &bar0->tx_traffic_int);
2841
2842 /* we need to free up the transmitted skbufs or else netpoll will
2843 * run out of skbs and will fail and eventually netpoll application such
2844 * as netdump will fail.
2845 */
2846 for (i = 0; i < config->tx_fifo_num; i++)
2847 tx_intr_handler(&mac_control->fifos[i]);
2848
2849 /* check for received packet and indicate up to network */
2850 for (i = 0; i < config->rx_ring_num; i++) {
2851 struct ring_info *ring = &mac_control->rings[i];
2852
2853 rx_intr_handler(ring, 0);
2854 }
2855
2856 for (i = 0; i < config->rx_ring_num; i++) {
2857 struct ring_info *ring = &mac_control->rings[i];
2858
2859 if (fill_rx_buffers(nic, ring, 0) == -ENOMEM) {
2860 DBG_PRINT(INFO_DBG,
2861 "%s: Out of memory in Rx Netpoll!!\n",
2862 dev->name);
2863 break;
2864 }
2865 }
2866 enable_irq(irq);
2867 }
2868 #endif
2869
2870 /**
2871 * rx_intr_handler - Rx interrupt handler
2872 * @ring_info: per ring structure.
2873 * @budget: budget for napi processing.
2874 * Description:
2875 * If the interrupt is because of a received frame or if the
2876 * receive ring contains fresh as yet un-processed frames,this function is
2877 * called. It picks out the RxD at which place the last Rx processing had
2878 * stopped and sends the skb to the OSM's Rx handler and then increments
2879 * the offset.
2880 * Return Value:
2881 * No. of napi packets processed.
2882 */
2883 static int rx_intr_handler(struct ring_info *ring_data, int budget)
2884 {
2885 int get_block, put_block;
2886 struct rx_curr_get_info get_info, put_info;
2887 struct RxD_t *rxdp;
2888 struct sk_buff *skb;
2889 int pkt_cnt = 0, napi_pkts = 0;
2890 int i;
2891 struct RxD1 *rxdp1;
2892 struct RxD3 *rxdp3;
2893
2894 if (budget <= 0)
2895 return napi_pkts;
2896
2897 get_info = ring_data->rx_curr_get_info;
2898 get_block = get_info.block_index;
2899 memcpy(&put_info, &ring_data->rx_curr_put_info, sizeof(put_info));
2900 put_block = put_info.block_index;
2901 rxdp = ring_data->rx_blocks[get_block].rxds[get_info.offset].virt_addr;
2902
2903 while (RXD_IS_UP2DT(rxdp)) {
2904 /*
2905 * If your are next to put index then it's
2906 * FIFO full condition
2907 */
2908 if ((get_block == put_block) &&
2909 (get_info.offset + 1) == put_info.offset) {
2910 DBG_PRINT(INTR_DBG, "%s: Ring Full\n",
2911 ring_data->dev->name);
2912 break;
2913 }
2914 skb = (struct sk_buff *)((unsigned long)rxdp->Host_Control);
2915 if (skb == NULL) {
2916 DBG_PRINT(ERR_DBG, "%s: NULL skb in Rx Intr\n",
2917 ring_data->dev->name);
2918 return 0;
2919 }
2920 if (ring_data->rxd_mode == RXD_MODE_1) {
2921 rxdp1 = (struct RxD1 *)rxdp;
2922 pci_unmap_single(ring_data->pdev, (dma_addr_t)
2923 rxdp1->Buffer0_ptr,
2924 ring_data->mtu +
2925 HEADER_ETHERNET_II_802_3_SIZE +
2926 HEADER_802_2_SIZE +
2927 HEADER_SNAP_SIZE,
2928 PCI_DMA_FROMDEVICE);
2929 } else if (ring_data->rxd_mode == RXD_MODE_3B) {
2930 rxdp3 = (struct RxD3 *)rxdp;
2931 pci_dma_sync_single_for_cpu(ring_data->pdev,
2932 (dma_addr_t)rxdp3->Buffer0_ptr,
2933 BUF0_LEN,
2934 PCI_DMA_FROMDEVICE);
2935 pci_unmap_single(ring_data->pdev,
2936 (dma_addr_t)rxdp3->Buffer2_ptr,
2937 ring_data->mtu + 4,
2938 PCI_DMA_FROMDEVICE);
2939 }
2940 prefetch(skb->data);
2941 rx_osm_handler(ring_data, rxdp);
2942 get_info.offset++;
2943 ring_data->rx_curr_get_info.offset = get_info.offset;
2944 rxdp = ring_data->rx_blocks[get_block].
2945 rxds[get_info.offset].virt_addr;
2946 if (get_info.offset == rxd_count[ring_data->rxd_mode]) {
2947 get_info.offset = 0;
2948 ring_data->rx_curr_get_info.offset = get_info.offset;
2949 get_block++;
2950 if (get_block == ring_data->block_count)
2951 get_block = 0;
2952 ring_data->rx_curr_get_info.block_index = get_block;
2953 rxdp = ring_data->rx_blocks[get_block].block_virt_addr;
2954 }
2955
2956 if (ring_data->nic->config.napi) {
2957 budget--;
2958 napi_pkts++;
2959 if (!budget)
2960 break;
2961 }
2962 pkt_cnt++;
2963 if ((indicate_max_pkts) && (pkt_cnt > indicate_max_pkts))
2964 break;
2965 }
2966 if (ring_data->lro) {
2967 /* Clear all LRO sessions before exiting */
2968 for (i = 0; i < MAX_LRO_SESSIONS; i++) {
2969 struct lro *lro = &ring_data->lro0_n[i];
2970 if (lro->in_use) {
2971 update_L3L4_header(ring_data->nic, lro);
2972 queue_rx_frame(lro->parent, lro->vlan_tag);
2973 clear_lro_session(lro);
2974 }
2975 }
2976 }
2977 return napi_pkts;
2978 }
2979
2980 /**
2981 * tx_intr_handler - Transmit interrupt handler
2982 * @nic : device private variable
2983 * Description:
2984 * If an interrupt was raised to indicate DMA complete of the
2985 * Tx packet, this function is called. It identifies the last TxD
2986 * whose buffer was freed and frees all skbs whose data have already
2987 * DMA'ed into the NICs internal memory.
2988 * Return Value:
2989 * NONE
2990 */
2991
2992 static void tx_intr_handler(struct fifo_info *fifo_data)
2993 {
2994 struct s2io_nic *nic = fifo_data->nic;
2995 struct tx_curr_get_info get_info, put_info;
2996 struct sk_buff *skb = NULL;
2997 struct TxD *txdlp;
2998 int pkt_cnt = 0;
2999 unsigned long flags = 0;
3000 u8 err_mask;
3001 struct stat_block *stats = nic->mac_control.stats_info;
3002 struct swStat *swstats = &stats->sw_stat;
3003
3004 if (!spin_trylock_irqsave(&fifo_data->tx_lock, flags))
3005 return;
3006
3007 get_info = fifo_data->tx_curr_get_info;
3008 memcpy(&put_info, &fifo_data->tx_curr_put_info, sizeof(put_info));
3009 txdlp = fifo_data->list_info[get_info.offset].list_virt_addr;
3010 while ((!(txdlp->Control_1 & TXD_LIST_OWN_XENA)) &&
3011 (get_info.offset != put_info.offset) &&
3012 (txdlp->Host_Control)) {
3013 /* Check for TxD errors */
3014 if (txdlp->Control_1 & TXD_T_CODE) {
3015 unsigned long long err;
3016 err = txdlp->Control_1 & TXD_T_CODE;
3017 if (err & 0x1) {
3018 swstats->parity_err_cnt++;
3019 }
3020
3021 /* update t_code statistics */
3022 err_mask = err >> 48;
3023 switch (err_mask) {
3024 case 2:
3025 swstats->tx_buf_abort_cnt++;
3026 break;
3027
3028 case 3:
3029 swstats->tx_desc_abort_cnt++;
3030 break;
3031
3032 case 7:
3033 swstats->tx_parity_err_cnt++;
3034 break;
3035
3036 case 10:
3037 swstats->tx_link_loss_cnt++;
3038 break;
3039
3040 case 15:
3041 swstats->tx_list_proc_err_cnt++;
3042 break;
3043 }
3044 }
3045
3046 skb = s2io_txdl_getskb(fifo_data, txdlp, get_info.offset);
3047 if (skb == NULL) {
3048 spin_unlock_irqrestore(&fifo_data->tx_lock, flags);
3049 DBG_PRINT(ERR_DBG, "%s: NULL skb in Tx Free Intr\n",
3050 __func__);
3051 return;
3052 }
3053 pkt_cnt++;
3054
3055 /* Updating the statistics block */
3056 swstats->mem_freed += skb->truesize;
3057 dev_kfree_skb_irq(skb);
3058
3059 get_info.offset++;
3060 if (get_info.offset == get_info.fifo_len + 1)
3061 get_info.offset = 0;
3062 txdlp = fifo_data->list_info[get_info.offset].list_virt_addr;
3063 fifo_data->tx_curr_get_info.offset = get_info.offset;
3064 }
3065
3066 s2io_wake_tx_queue(fifo_data, pkt_cnt, nic->config.multiq);
3067
3068 spin_unlock_irqrestore(&fifo_data->tx_lock, flags);
3069 }
3070
3071 /**
3072 * s2io_mdio_write - Function to write in to MDIO registers
3073 * @mmd_type : MMD type value (PMA/PMD/WIS/PCS/PHYXS)
3074 * @addr : address value
3075 * @value : data value
3076 * @dev : pointer to net_device structure
3077 * Description:
3078 * This function is used to write values to the MDIO registers
3079 * NONE
3080 */
3081 static void s2io_mdio_write(u32 mmd_type, u64 addr, u16 value,
3082 struct net_device *dev)
3083 {
3084 u64 val64;
3085 struct s2io_nic *sp = netdev_priv(dev);
3086 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3087
3088 /* address transaction */
3089 val64 = MDIO_MMD_INDX_ADDR(addr) |
3090 MDIO_MMD_DEV_ADDR(mmd_type) |
3091 MDIO_MMS_PRT_ADDR(0x0);
3092 writeq(val64, &bar0->mdio_control);
3093 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3094 writeq(val64, &bar0->mdio_control);
3095 udelay(100);
3096
3097 /* Data transaction */
3098 val64 = MDIO_MMD_INDX_ADDR(addr) |
3099 MDIO_MMD_DEV_ADDR(mmd_type) |
3100 MDIO_MMS_PRT_ADDR(0x0) |
3101 MDIO_MDIO_DATA(value) |
3102 MDIO_OP(MDIO_OP_WRITE_TRANS);
3103 writeq(val64, &bar0->mdio_control);
3104 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3105 writeq(val64, &bar0->mdio_control);
3106 udelay(100);
3107
3108 val64 = MDIO_MMD_INDX_ADDR(addr) |
3109 MDIO_MMD_DEV_ADDR(mmd_type) |
3110 MDIO_MMS_PRT_ADDR(0x0) |
3111 MDIO_OP(MDIO_OP_READ_TRANS);
3112 writeq(val64, &bar0->mdio_control);
3113 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3114 writeq(val64, &bar0->mdio_control);
3115 udelay(100);
3116 }
3117
3118 /**
3119 * s2io_mdio_read - Function to write in to MDIO registers
3120 * @mmd_type : MMD type value (PMA/PMD/WIS/PCS/PHYXS)
3121 * @addr : address value
3122 * @dev : pointer to net_device structure
3123 * Description:
3124 * This function is used to read values to the MDIO registers
3125 * NONE
3126 */
3127 static u64 s2io_mdio_read(u32 mmd_type, u64 addr, struct net_device *dev)
3128 {
3129 u64 val64 = 0x0;
3130 u64 rval64 = 0x0;
3131 struct s2io_nic *sp = netdev_priv(dev);
3132 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3133
3134 /* address transaction */
3135 val64 = val64 | (MDIO_MMD_INDX_ADDR(addr)
3136 | MDIO_MMD_DEV_ADDR(mmd_type)
3137 | MDIO_MMS_PRT_ADDR(0x0));
3138 writeq(val64, &bar0->mdio_control);
3139 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3140 writeq(val64, &bar0->mdio_control);
3141 udelay(100);
3142
3143 /* Data transaction */
3144 val64 = MDIO_MMD_INDX_ADDR(addr) |
3145 MDIO_MMD_DEV_ADDR(mmd_type) |
3146 MDIO_MMS_PRT_ADDR(0x0) |
3147 MDIO_OP(MDIO_OP_READ_TRANS);
3148 writeq(val64, &bar0->mdio_control);
3149 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3150 writeq(val64, &bar0->mdio_control);
3151 udelay(100);
3152
3153 /* Read the value from regs */
3154 rval64 = readq(&bar0->mdio_control);
3155 rval64 = rval64 & 0xFFFF0000;
3156 rval64 = rval64 >> 16;
3157 return rval64;
3158 }
3159
3160 /**
3161 * s2io_chk_xpak_counter - Function to check the status of the xpak counters
3162 * @counter : counter value to be updated
3163 * @flag : flag to indicate the status
3164 * @type : counter type
3165 * Description:
3166 * This function is to check the status of the xpak counters value
3167 * NONE
3168 */
3169
3170 static void s2io_chk_xpak_counter(u64 *counter, u64 * regs_stat, u32 index,
3171 u16 flag, u16 type)
3172 {
3173 u64 mask = 0x3;
3174 u64 val64;
3175 int i;
3176 for (i = 0; i < index; i++)
3177 mask = mask << 0x2;
3178
3179 if (flag > 0) {
3180 *counter = *counter + 1;
3181 val64 = *regs_stat & mask;
3182 val64 = val64 >> (index * 0x2);
3183 val64 = val64 + 1;
3184 if (val64 == 3) {
3185 switch (type) {
3186 case 1:
3187 DBG_PRINT(ERR_DBG,
3188 "Take Xframe NIC out of service.\n");
3189 DBG_PRINT(ERR_DBG,
3190 "Excessive temperatures may result in premature transceiver failure.\n");
3191 break;
3192 case 2:
3193 DBG_PRINT(ERR_DBG,
3194 "Take Xframe NIC out of service.\n");
3195 DBG_PRINT(ERR_DBG,
3196 "Excessive bias currents may indicate imminent laser diode failure.\n");
3197 break;
3198 case 3:
3199 DBG_PRINT(ERR_DBG,
3200 "Take Xframe NIC out of service.\n");
3201 DBG_PRINT(ERR_DBG,
3202 "Excessive laser output power may saturate far-end receiver.\n");
3203 break;
3204 default:
3205 DBG_PRINT(ERR_DBG,
3206 "Incorrect XPAK Alarm type\n");
3207 }
3208 val64 = 0x0;
3209 }
3210 val64 = val64 << (index * 0x2);
3211 *regs_stat = (*regs_stat & (~mask)) | (val64);
3212
3213 } else {
3214 *regs_stat = *regs_stat & (~mask);
3215 }
3216 }
3217
3218 /**
3219 * s2io_updt_xpak_counter - Function to update the xpak counters
3220 * @dev : pointer to net_device struct
3221 * Description:
3222 * This function is to upate the status of the xpak counters value
3223 * NONE
3224 */
3225 static void s2io_updt_xpak_counter(struct net_device *dev)
3226 {
3227 u16 flag = 0x0;
3228 u16 type = 0x0;
3229 u16 val16 = 0x0;
3230 u64 val64 = 0x0;
3231 u64 addr = 0x0;
3232
3233 struct s2io_nic *sp = netdev_priv(dev);
3234 struct stat_block *stats = sp->mac_control.stats_info;
3235 struct xpakStat *xstats = &stats->xpak_stat;
3236
3237 /* Check the communication with the MDIO slave */
3238 addr = MDIO_CTRL1;
3239 val64 = 0x0;
3240 val64 = s2io_mdio_read(MDIO_MMD_PMAPMD, addr, dev);
3241 if ((val64 == 0xFFFF) || (val64 == 0x0000)) {
3242 DBG_PRINT(ERR_DBG,
3243 "ERR: MDIO slave access failed - Returned %llx\n",
3244 (unsigned long long)val64);
3245 return;
3246 }
3247
3248 /* Check for the expected value of control reg 1 */
3249 if (val64 != MDIO_CTRL1_SPEED10G) {
3250 DBG_PRINT(ERR_DBG, "Incorrect value at PMA address 0x0000 - "
3251 "Returned: %llx- Expected: 0x%x\n",
3252 (unsigned long long)val64, MDIO_CTRL1_SPEED10G);
3253 return;
3254 }
3255
3256 /* Loading the DOM register to MDIO register */
3257 addr = 0xA100;
3258 s2io_mdio_write(MDIO_MMD_PMAPMD, addr, val16, dev);
3259 val64 = s2io_mdio_read(MDIO_MMD_PMAPMD, addr, dev);
3260
3261 /* Reading the Alarm flags */
3262 addr = 0xA070;
3263 val64 = 0x0;
3264 val64 = s2io_mdio_read(MDIO_MMD_PMAPMD, addr, dev);
3265
3266 flag = CHECKBIT(val64, 0x7);
3267 type = 1;
3268 s2io_chk_xpak_counter(&xstats->alarm_transceiver_temp_high,
3269 &xstats->xpak_regs_stat,
3270 0x0, flag, type);
3271
3272 if (CHECKBIT(val64, 0x6))
3273 xstats->alarm_transceiver_temp_low++;
3274
3275 flag = CHECKBIT(val64, 0x3);
3276 type = 2;
3277 s2io_chk_xpak_counter(&xstats->alarm_laser_bias_current_high,
3278 &xstats->xpak_regs_stat,
3279 0x2, flag, type);
3280
3281 if (CHECKBIT(val64, 0x2))
3282 xstats->alarm_laser_bias_current_low++;
3283
3284 flag = CHECKBIT(val64, 0x1);
3285 type = 3;
3286 s2io_chk_xpak_counter(&xstats->alarm_laser_output_power_high,
3287 &xstats->xpak_regs_stat,
3288 0x4, flag, type);
3289
3290 if (CHECKBIT(val64, 0x0))
3291 xstats->alarm_laser_output_power_low++;
3292
3293 /* Reading the Warning flags */
3294 addr = 0xA074;
3295 val64 = 0x0;
3296 val64 = s2io_mdio_read(MDIO_MMD_PMAPMD, addr, dev);
3297
3298 if (CHECKBIT(val64, 0x7))
3299 xstats->warn_transceiver_temp_high++;
3300
3301 if (CHECKBIT(val64, 0x6))
3302 xstats->warn_transceiver_temp_low++;
3303
3304 if (CHECKBIT(val64, 0x3))
3305 xstats->warn_laser_bias_current_high++;
3306
3307 if (CHECKBIT(val64, 0x2))
3308 xstats->warn_laser_bias_current_low++;
3309
3310 if (CHECKBIT(val64, 0x1))
3311 xstats->warn_laser_output_power_high++;
3312
3313 if (CHECKBIT(val64, 0x0))
3314 xstats->warn_laser_output_power_low++;
3315 }
3316
3317 /**
3318 * wait_for_cmd_complete - waits for a command to complete.
3319 * @sp : private member of the device structure, which is a pointer to the
3320 * s2io_nic structure.
3321 * Description: Function that waits for a command to Write into RMAC
3322 * ADDR DATA registers to be completed and returns either success or
3323 * error depending on whether the command was complete or not.
3324 * Return value:
3325 * SUCCESS on success and FAILURE on failure.
3326 */
3327
3328 static int wait_for_cmd_complete(void __iomem *addr, u64 busy_bit,
3329 int bit_state)
3330 {
3331 int ret = FAILURE, cnt = 0, delay = 1;
3332 u64 val64;
3333
3334 if ((bit_state != S2IO_BIT_RESET) && (bit_state != S2IO_BIT_SET))
3335 return FAILURE;
3336
3337 do {
3338 val64 = readq(addr);
3339 if (bit_state == S2IO_BIT_RESET) {
3340 if (!(val64 & busy_bit)) {
3341 ret = SUCCESS;
3342 break;
3343 }
3344 } else {
3345 if (val64 & busy_bit) {
3346 ret = SUCCESS;
3347 break;
3348 }
3349 }
3350
3351 if (in_interrupt())
3352 mdelay(delay);
3353 else
3354 msleep(delay);
3355
3356 if (++cnt >= 10)
3357 delay = 50;
3358 } while (cnt < 20);
3359 return ret;
3360 }
3361 /**
3362 * check_pci_device_id - Checks if the device id is supported
3363 * @id : device id
3364 * Description: Function to check if the pci device id is supported by driver.
3365 * Return value: Actual device id if supported else PCI_ANY_ID
3366 */
3367 static u16 check_pci_device_id(u16 id)
3368 {
3369 switch (id) {
3370 case PCI_DEVICE_ID_HERC_WIN:
3371 case PCI_DEVICE_ID_HERC_UNI:
3372 return XFRAME_II_DEVICE;
3373 case PCI_DEVICE_ID_S2IO_UNI:
3374 case PCI_DEVICE_ID_S2IO_WIN:
3375 return XFRAME_I_DEVICE;
3376 default:
3377 return PCI_ANY_ID;
3378 }
3379 }
3380
3381 /**
3382 * s2io_reset - Resets the card.
3383 * @sp : private member of the device structure.
3384 * Description: Function to Reset the card. This function then also
3385 * restores the previously saved PCI configuration space registers as
3386 * the card reset also resets the configuration space.
3387 * Return value:
3388 * void.
3389 */
3390
3391 static void s2io_reset(struct s2io_nic *sp)
3392 {
3393 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3394 u64 val64;
3395 u16 subid, pci_cmd;
3396 int i;
3397 u16 val16;
3398 unsigned long long up_cnt, down_cnt, up_time, down_time, reset_cnt;
3399 unsigned long long mem_alloc_cnt, mem_free_cnt, watchdog_cnt;
3400 struct stat_block *stats;
3401 struct swStat *swstats;
3402
3403 DBG_PRINT(INIT_DBG, "%s: Resetting XFrame card %s\n",
3404 __func__, pci_name(sp->pdev));
3405
3406 /* Back up the PCI-X CMD reg, dont want to lose MMRBC, OST settings */
3407 pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER, &(pci_cmd));
3408
3409 val64 = SW_RESET_ALL;
3410 writeq(val64, &bar0->sw_reset);
3411 if (strstr(sp->product_name, "CX4"))
3412 msleep(750);
3413 msleep(250);
3414 for (i = 0; i < S2IO_MAX_PCI_CONFIG_SPACE_REINIT; i++) {
3415
3416 /* Restore the PCI state saved during initialization. */
3417 pci_restore_state(sp->pdev);
3418 pci_save_state(sp->pdev);
3419 pci_read_config_word(sp->pdev, 0x2, &val16);
3420 if (check_pci_device_id(val16) != (u16)PCI_ANY_ID)
3421 break;
3422 msleep(200);
3423 }
3424
3425 if (check_pci_device_id(val16) == (u16)PCI_ANY_ID)
3426 DBG_PRINT(ERR_DBG, "%s SW_Reset failed!\n", __func__);
3427
3428 pci_write_config_word(sp->pdev, PCIX_COMMAND_REGISTER, pci_cmd);
3429
3430 s2io_init_pci(sp);
3431
3432 /* Set swapper to enable I/O register access */
3433 s2io_set_swapper(sp);
3434
3435 /* restore mac_addr entries */
3436 do_s2io_restore_unicast_mc(sp);
3437
3438 /* Restore the MSIX table entries from local variables */
3439 restore_xmsi_data(sp);
3440
3441 /* Clear certain PCI/PCI-X fields after reset */
3442 if (sp->device_type == XFRAME_II_DEVICE) {
3443 /* Clear "detected parity error" bit */
3444 pci_write_config_word(sp->pdev, PCI_STATUS, 0x8000);
3445
3446 /* Clearing PCIX Ecc status register */
3447 pci_write_config_dword(sp->pdev, 0x68, 0x7C);
3448
3449 /* Clearing PCI_STATUS error reflected here */
3450 writeq(s2BIT(62), &bar0->txpic_int_reg);
3451 }
3452
3453 /* Reset device statistics maintained by OS */
3454 memset(&sp->stats, 0, sizeof(struct net_device_stats));
3455
3456 stats = sp->mac_control.stats_info;
3457 swstats = &stats->sw_stat;
3458
3459 /* save link up/down time/cnt, reset/memory/watchdog cnt */
3460 up_cnt = swstats->link_up_cnt;
3461 down_cnt = swstats->link_down_cnt;
3462 up_time = swstats->link_up_time;
3463 down_time = swstats->link_down_time;
3464 reset_cnt = swstats->soft_reset_cnt;
3465 mem_alloc_cnt = swstats->mem_allocated;
3466 mem_free_cnt = swstats->mem_freed;
3467 watchdog_cnt = swstats->watchdog_timer_cnt;
3468
3469 memset(stats, 0, sizeof(struct stat_block));
3470
3471 /* restore link up/down time/cnt, reset/memory/watchdog cnt */
3472 swstats->link_up_cnt = up_cnt;
3473 swstats->link_down_cnt = down_cnt;
3474 swstats->link_up_time = up_time;
3475 swstats->link_down_time = down_time;
3476 swstats->soft_reset_cnt = reset_cnt;
3477 swstats->mem_allocated = mem_alloc_cnt;
3478 swstats->mem_freed = mem_free_cnt;
3479 swstats->watchdog_timer_cnt = watchdog_cnt;
3480
3481 /* SXE-002: Configure link and activity LED to turn it off */
3482 subid = sp->pdev->subsystem_device;
3483 if (((subid & 0xFF) >= 0x07) &&
3484 (sp->device_type == XFRAME_I_DEVICE)) {
3485 val64 = readq(&bar0->gpio_control);
3486 val64 |= 0x0000800000000000ULL;
3487 writeq(val64, &bar0->gpio_control);
3488 val64 = 0x0411040400000000ULL;
3489 writeq(val64, (void __iomem *)bar0 + 0x2700);
3490 }
3491
3492 /*
3493 * Clear spurious ECC interrupts that would have occurred on
3494 * XFRAME II cards after reset.
3495 */
3496 if (sp->device_type == XFRAME_II_DEVICE) {
3497 val64 = readq(&bar0->pcc_err_reg);
3498 writeq(val64, &bar0->pcc_err_reg);
3499 }
3500
3501 sp->device_enabled_once = false;
3502 }
3503
3504 /**
3505 * s2io_set_swapper - to set the swapper controle on the card
3506 * @sp : private member of the device structure,
3507 * pointer to the s2io_nic structure.
3508 * Description: Function to set the swapper control on the card
3509 * correctly depending on the 'endianness' of the system.
3510 * Return value:
3511 * SUCCESS on success and FAILURE on failure.
3512 */
3513
3514 static int s2io_set_swapper(struct s2io_nic *sp)
3515 {
3516 struct net_device *dev = sp->dev;
3517 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3518 u64 val64, valt, valr;
3519
3520 /*
3521 * Set proper endian settings and verify the same by reading
3522 * the PIF Feed-back register.
3523 */
3524
3525 val64 = readq(&bar0->pif_rd_swapper_fb);
3526 if (val64 != 0x0123456789ABCDEFULL) {
3527 int i = 0;
3528 static const u64 value[] = {
3529 0xC30000C3C30000C3ULL, /* FE=1, SE=1 */
3530 0x8100008181000081ULL, /* FE=1, SE=0 */
3531 0x4200004242000042ULL, /* FE=0, SE=1 */
3532 0 /* FE=0, SE=0 */
3533 };
3534
3535 while (i < 4) {
3536 writeq(value[i], &bar0->swapper_ctrl);
3537 val64 = readq(&bar0->pif_rd_swapper_fb);
3538 if (val64 == 0x0123456789ABCDEFULL)
3539 break;
3540 i++;
3541 }
3542 if (i == 4) {
3543 DBG_PRINT(ERR_DBG, "%s: Endian settings are wrong, "
3544 "feedback read %llx\n",
3545 dev->name, (unsigned long long)val64);
3546 return FAILURE;
3547 }
3548 valr = value[i];
3549 } else {
3550 valr = readq(&bar0->swapper_ctrl);
3551 }
3552
3553 valt = 0x0123456789ABCDEFULL;
3554 writeq(valt, &bar0->xmsi_address);
3555 val64 = readq(&bar0->xmsi_address);
3556
3557 if (val64 != valt) {
3558 int i = 0;
3559 static const u64 value[] = {
3560 0x00C3C30000C3C300ULL, /* FE=1, SE=1 */
3561 0x0081810000818100ULL, /* FE=1, SE=0 */
3562 0x0042420000424200ULL, /* FE=0, SE=1 */
3563 0 /* FE=0, SE=0 */
3564 };
3565
3566 while (i < 4) {
3567 writeq((value[i] | valr), &bar0->swapper_ctrl);
3568 writeq(valt, &bar0->xmsi_address);
3569 val64 = readq(&bar0->xmsi_address);
3570 if (val64 == valt)
3571 break;
3572 i++;
3573 }
3574 if (i == 4) {
3575 unsigned long long x = val64;
3576 DBG_PRINT(ERR_DBG,
3577 "Write failed, Xmsi_addr reads:0x%llx\n", x);
3578 return FAILURE;
3579 }
3580 }
3581 val64 = readq(&bar0->swapper_ctrl);
3582 val64 &= 0xFFFF000000000000ULL;
3583
3584 #ifdef __BIG_ENDIAN
3585 /*
3586 * The device by default set to a big endian format, so a
3587 * big endian driver need not set anything.
3588 */
3589 val64 |= (SWAPPER_CTRL_TXP_FE |
3590 SWAPPER_CTRL_TXP_SE |
3591 SWAPPER_CTRL_TXD_R_FE |
3592 SWAPPER_CTRL_TXD_W_FE |
3593 SWAPPER_CTRL_TXF_R_FE |
3594 SWAPPER_CTRL_RXD_R_FE |
3595 SWAPPER_CTRL_RXD_W_FE |
3596 SWAPPER_CTRL_RXF_W_FE |
3597 SWAPPER_CTRL_XMSI_FE |
3598 SWAPPER_CTRL_STATS_FE |
3599 SWAPPER_CTRL_STATS_SE);
3600 if (sp->config.intr_type == INTA)
3601 val64 |= SWAPPER_CTRL_XMSI_SE;
3602 writeq(val64, &bar0->swapper_ctrl);
3603 #else
3604 /*
3605 * Initially we enable all bits to make it accessible by the
3606 * driver, then we selectively enable only those bits that
3607 * we want to set.
3608 */
3609 val64 |= (SWAPPER_CTRL_TXP_FE |
3610 SWAPPER_CTRL_TXP_SE |
3611 SWAPPER_CTRL_TXD_R_FE |
3612 SWAPPER_CTRL_TXD_R_SE |
3613 SWAPPER_CTRL_TXD_W_FE |
3614 SWAPPER_CTRL_TXD_W_SE |
3615 SWAPPER_CTRL_TXF_R_FE |
3616 SWAPPER_CTRL_RXD_R_FE |
3617 SWAPPER_CTRL_RXD_R_SE |
3618 SWAPPER_CTRL_RXD_W_FE |
3619 SWAPPER_CTRL_RXD_W_SE |
3620 SWAPPER_CTRL_RXF_W_FE |
3621 SWAPPER_CTRL_XMSI_FE |
3622 SWAPPER_CTRL_STATS_FE |
3623 SWAPPER_CTRL_STATS_SE);
3624 if (sp->config.intr_type == INTA)
3625 val64 |= SWAPPER_CTRL_XMSI_SE;
3626 writeq(val64, &bar0->swapper_ctrl);
3627 #endif
3628 val64 = readq(&bar0->swapper_ctrl);
3629
3630 /*
3631 * Verifying if endian settings are accurate by reading a
3632 * feedback register.
3633 */
3634 val64 = readq(&bar0->pif_rd_swapper_fb);
3635 if (val64 != 0x0123456789ABCDEFULL) {
3636 /* Endian settings are incorrect, calls for another dekko. */
3637 DBG_PRINT(ERR_DBG,
3638 "%s: Endian settings are wrong, feedback read %llx\n",
3639 dev->name, (unsigned long long)val64);
3640 return FAILURE;
3641 }
3642
3643 return SUCCESS;
3644 }
3645
3646 static int wait_for_msix_trans(struct s2io_nic *nic, int i)
3647 {
3648 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3649 u64 val64;
3650 int ret = 0, cnt = 0;
3651
3652 do {
3653 val64 = readq(&bar0->xmsi_access);
3654 if (!(val64 & s2BIT(15)))
3655 break;
3656 mdelay(1);
3657 cnt++;
3658 } while (cnt < 5);
3659 if (cnt == 5) {
3660 DBG_PRINT(ERR_DBG, "XMSI # %d Access failed\n", i);
3661 ret = 1;
3662 }
3663
3664 return ret;
3665 }
3666
3667 static void restore_xmsi_data(struct s2io_nic *nic)
3668 {
3669 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3670 u64 val64;
3671 int i, msix_index;
3672
3673 if (nic->device_type == XFRAME_I_DEVICE)
3674 return;
3675
3676 for (i = 0; i < MAX_REQUESTED_MSI_X; i++) {
3677 msix_index = (i) ? ((i-1) * 8 + 1) : 0;
3678 writeq(nic->msix_info[i].addr, &bar0->xmsi_address);
3679 writeq(nic->msix_info[i].data, &bar0->xmsi_data);
3680 val64 = (s2BIT(7) | s2BIT(15) | vBIT(msix_index, 26, 6));
3681 writeq(val64, &bar0->xmsi_access);
3682 if (wait_for_msix_trans(nic, msix_index)) {
3683 DBG_PRINT(ERR_DBG, "%s: index: %d failed\n",
3684 __func__, msix_index);
3685 continue;
3686 }
3687 }
3688 }
3689
3690 static void store_xmsi_data(struct s2io_nic *nic)
3691 {
3692 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3693 u64 val64, addr, data;
3694 int i, msix_index;
3695
3696 if (nic->device_type == XFRAME_I_DEVICE)
3697 return;
3698
3699 /* Store and display */
3700 for (i = 0; i < MAX_REQUESTED_MSI_X; i++) {
3701 msix_index = (i) ? ((i-1) * 8 + 1) : 0;
3702 val64 = (s2BIT(15) | vBIT(msix_index, 26, 6));
3703 writeq(val64, &bar0->xmsi_access);
3704 if (wait_for_msix_trans(nic, msix_index)) {
3705 DBG_PRINT(ERR_DBG, "%s: index: %d failed\n",
3706 __func__, msix_index);
3707 continue;
3708 }
3709 addr = readq(&bar0->xmsi_address);
3710 data = readq(&bar0->xmsi_data);
3711 if (addr && data) {
3712 nic->msix_info[i].addr = addr;
3713 nic->msix_info[i].data = data;
3714 }
3715 }
3716 }
3717
3718 static int s2io_enable_msi_x(struct s2io_nic *nic)
3719 {
3720 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3721 u64 rx_mat;
3722 u16 msi_control; /* Temp variable */
3723 int ret, i, j, msix_indx = 1;
3724 int size;
3725 struct stat_block *stats = nic->mac_control.stats_info;
3726 struct swStat *swstats = &stats->sw_stat;
3727
3728 size = nic->num_entries * sizeof(struct msix_entry);
3729 nic->entries = kzalloc(size, GFP_KERNEL);
3730 if (!nic->entries) {
3731 DBG_PRINT(INFO_DBG, "%s: Memory allocation failed\n",
3732 __func__);
3733 swstats->mem_alloc_fail_cnt++;
3734 return -ENOMEM;
3735 }
3736 swstats->mem_allocated += size;
3737
3738 size = nic->num_entries * sizeof(struct s2io_msix_entry);
3739 nic->s2io_entries = kzalloc(size, GFP_KERNEL);
3740 if (!nic->s2io_entries) {
3741 DBG_PRINT(INFO_DBG, "%s: Memory allocation failed\n",
3742 __func__);
3743 swstats->mem_alloc_fail_cnt++;
3744 kfree(nic->entries);
3745 swstats->mem_freed
3746 += (nic->num_entries * sizeof(struct msix_entry));
3747 return -ENOMEM;
3748 }
3749 swstats->mem_allocated += size;
3750
3751 nic->entries[0].entry = 0;
3752 nic->s2io_entries[0].entry = 0;
3753 nic->s2io_entries[0].in_use = MSIX_FLG;
3754 nic->s2io_entries[0].type = MSIX_ALARM_TYPE;
3755 nic->s2io_entries[0].arg = &nic->mac_control.fifos;
3756
3757 for (i = 1; i < nic->num_entries; i++) {
3758 nic->entries[i].entry = ((i - 1) * 8) + 1;
3759 nic->s2io_entries[i].entry = ((i - 1) * 8) + 1;
3760 nic->s2io_entries[i].arg = NULL;
3761 nic->s2io_entries[i].in_use = 0;
3762 }
3763
3764 rx_mat = readq(&bar0->rx_mat);
3765 for (j = 0; j < nic->config.rx_ring_num; j++) {
3766 rx_mat |= RX_MAT_SET(j, msix_indx);
3767 nic->s2io_entries[j+1].arg = &nic->mac_control.rings[j];
3768 nic->s2io_entries[j+1].type = MSIX_RING_TYPE;
3769 nic->s2io_entries[j+1].in_use = MSIX_FLG;
3770 msix_indx += 8;
3771 }
3772 writeq(rx_mat, &bar0->rx_mat);
3773 readq(&bar0->rx_mat);
3774
3775 ret = pci_enable_msix_range(nic->pdev, nic->entries,
3776 nic->num_entries, nic->num_entries);
3777 /* We fail init if error or we get less vectors than min required */
3778 if (ret < 0) {
3779 DBG_PRINT(ERR_DBG, "Enabling MSI-X failed\n");
3780 kfree(nic->entries);
3781 swstats->mem_freed += nic->num_entries *
3782 sizeof(struct msix_entry);
3783 kfree(nic->s2io_entries);
3784 swstats->mem_freed += nic->num_entries *
3785 sizeof(struct s2io_msix_entry);
3786 nic->entries = NULL;
3787 nic->s2io_entries = NULL;
3788 return -ENOMEM;
3789 }
3790
3791 /*
3792 * To enable MSI-X, MSI also needs to be enabled, due to a bug
3793 * in the herc NIC. (Temp change, needs to be removed later)
3794 */
3795 pci_read_config_word(nic->pdev, 0x42, &msi_control);
3796 msi_control |= 0x1; /* Enable MSI */
3797 pci_write_config_word(nic->pdev, 0x42, msi_control);
3798
3799 return 0;
3800 }
3801
3802 /* Handle software interrupt used during MSI(X) test */
3803 static irqreturn_t s2io_test_intr(int irq, void *dev_id)
3804 {
3805 struct s2io_nic *sp = dev_id;
3806
3807 sp->msi_detected = 1;
3808 wake_up(&sp->msi_wait);
3809
3810 return IRQ_HANDLED;
3811 }
3812
3813 /* Test interrupt path by forcing a a software IRQ */
3814 static int s2io_test_msi(struct s2io_nic *sp)
3815 {
3816 struct pci_dev *pdev = sp->pdev;
3817 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3818 int err;
3819 u64 val64, saved64;
3820
3821 err = request_irq(sp->entries[1].vector, s2io_test_intr, 0,
3822 sp->name, sp);
3823 if (err) {
3824 DBG_PRINT(ERR_DBG, "%s: PCI %s: cannot assign irq %d\n",
3825 sp->dev->name, pci_name(pdev), pdev->irq);
3826 return err;
3827 }
3828
3829 init_waitqueue_head(&sp->msi_wait);
3830 sp->msi_detected = 0;
3831
3832 saved64 = val64 = readq(&bar0->scheduled_int_ctrl);
3833 val64 |= SCHED_INT_CTRL_ONE_SHOT;
3834 val64 |= SCHED_INT_CTRL_TIMER_EN;
3835 val64 |= SCHED_INT_CTRL_INT2MSI(1);
3836 writeq(val64, &bar0->scheduled_int_ctrl);
3837
3838 wait_event_timeout(sp->msi_wait, sp->msi_detected, HZ/10);
3839
3840 if (!sp->msi_detected) {
3841 /* MSI(X) test failed, go back to INTx mode */
3842 DBG_PRINT(ERR_DBG, "%s: PCI %s: No interrupt was generated "
3843 "using MSI(X) during test\n",
3844 sp->dev->name, pci_name(pdev));
3845
3846 err = -EOPNOTSUPP;
3847 }
3848
3849 free_irq(sp->entries[1].vector, sp);
3850
3851 writeq(saved64, &bar0->scheduled_int_ctrl);
3852
3853 return err;
3854 }
3855
3856 static void remove_msix_isr(struct s2io_nic *sp)
3857 {
3858 int i;
3859 u16 msi_control;
3860
3861 for (i = 0; i < sp->num_entries; i++) {
3862 if (sp->s2io_entries[i].in_use == MSIX_REGISTERED_SUCCESS) {
3863 int vector = sp->entries[i].vector;
3864 void *arg = sp->s2io_entries[i].arg;
3865 free_irq(vector, arg);
3866 }
3867 }
3868
3869 kfree(sp->entries);
3870 kfree(sp->s2io_entries);
3871 sp->entries = NULL;
3872 sp->s2io_entries = NULL;
3873
3874 pci_read_config_word(sp->pdev, 0x42, &msi_control);
3875 msi_control &= 0xFFFE; /* Disable MSI */
3876 pci_write_config_word(sp->pdev, 0x42, msi_control);
3877
3878 pci_disable_msix(sp->pdev);
3879 }
3880
3881 static void remove_inta_isr(struct s2io_nic *sp)
3882 {
3883 free_irq(sp->pdev->irq, sp->dev);
3884 }
3885
3886 /* ********************************************************* *
3887 * Functions defined below concern the OS part of the driver *
3888 * ********************************************************* */
3889
3890 /**
3891 * s2io_open - open entry point of the driver
3892 * @dev : pointer to the device structure.
3893 * Description:
3894 * This function is the open entry point of the driver. It mainly calls a
3895 * function to allocate Rx buffers and inserts them into the buffer
3896 * descriptors and then enables the Rx part of the NIC.
3897 * Return value:
3898 * 0 on success and an appropriate (-)ve integer as defined in errno.h
3899 * file on failure.
3900 */
3901
3902 static int s2io_open(struct net_device *dev)
3903 {
3904 struct s2io_nic *sp = netdev_priv(dev);
3905 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
3906 int err = 0;
3907
3908 /*
3909 * Make sure you have link off by default every time
3910 * Nic is initialized
3911 */
3912 netif_carrier_off(dev);
3913 sp->last_link_state = 0;
3914
3915 /* Initialize H/W and enable interrupts */
3916 err = s2io_card_up(sp);
3917 if (err) {
3918 DBG_PRINT(ERR_DBG, "%s: H/W initialization failed\n",
3919 dev->name);
3920 goto hw_init_failed;
3921 }
3922
3923 if (do_s2io_prog_unicast(dev, dev->dev_addr) == FAILURE) {
3924 DBG_PRINT(ERR_DBG, "Set Mac Address Failed\n");
3925 s2io_card_down(sp);
3926 err = -ENODEV;
3927 goto hw_init_failed;
3928 }
3929 s2io_start_all_tx_queue(sp);
3930 return 0;
3931
3932 hw_init_failed:
3933 if (sp->config.intr_type == MSI_X) {
3934 if (sp->entries) {
3935 kfree(sp->entries);
3936 swstats->mem_freed += sp->num_entries *
3937 sizeof(struct msix_entry);
3938 }
3939 if (sp->s2io_entries) {
3940 kfree(sp->s2io_entries);
3941 swstats->mem_freed += sp->num_entries *
3942 sizeof(struct s2io_msix_entry);
3943 }
3944 }
3945 return err;
3946 }
3947
3948 /**
3949 * s2io_close -close entry point of the driver
3950 * @dev : device pointer.
3951 * Description:
3952 * This is the stop entry point of the driver. It needs to undo exactly
3953 * whatever was done by the open entry point,thus it's usually referred to
3954 * as the close function.Among other things this function mainly stops the
3955 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3956 * Return value:
3957 * 0 on success and an appropriate (-)ve integer as defined in errno.h
3958 * file on failure.
3959 */
3960
3961 static int s2io_close(struct net_device *dev)
3962 {
3963 struct s2io_nic *sp = netdev_priv(dev);
3964 struct config_param *config = &sp->config;
3965 u64 tmp64;
3966 int offset;
3967
3968 /* Return if the device is already closed *
3969 * Can happen when s2io_card_up failed in change_mtu *
3970 */
3971 if (!is_s2io_card_up(sp))
3972 return 0;
3973
3974 s2io_stop_all_tx_queue(sp);
3975 /* delete all populated mac entries */
3976 for (offset = 1; offset < config->max_mc_addr; offset++) {
3977 tmp64 = do_s2io_read_unicast_mc(sp, offset);
3978 if (tmp64 != S2IO_DISABLE_MAC_ENTRY)
3979 do_s2io_delete_unicast_mc(sp, tmp64);
3980 }
3981
3982 s2io_card_down(sp);
3983
3984 return 0;
3985 }
3986
3987 /**
3988 * s2io_xmit - Tx entry point of te driver
3989 * @skb : the socket buffer containing the Tx data.
3990 * @dev : device pointer.
3991 * Description :
3992 * This function is the Tx entry point of the driver. S2IO NIC supports
3993 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
3994 * NOTE: when device can't queue the pkt,just the trans_start variable will
3995 * not be upadted.
3996 * Return value:
3997 * 0 on success & 1 on failure.
3998 */
3999
4000 static netdev_tx_t s2io_xmit(struct sk_buff *skb, struct net_device *dev)
4001 {
4002 struct s2io_nic *sp = netdev_priv(dev);
4003 u16 frg_cnt, frg_len, i, queue, queue_len, put_off, get_off;
4004 register u64 val64;
4005 struct TxD *txdp;
4006 struct TxFIFO_element __iomem *tx_fifo;
4007 unsigned long flags = 0;
4008 u16 vlan_tag = 0;
4009 struct fifo_info *fifo = NULL;
4010 int offload_type;
4011 int enable_per_list_interrupt = 0;
4012 struct config_param *config = &sp->config;
4013 struct mac_info *mac_control = &sp->mac_control;
4014 struct stat_block *stats = mac_control->stats_info;
4015 struct swStat *swstats = &stats->sw_stat;
4016
4017 DBG_PRINT(TX_DBG, "%s: In Neterion Tx routine\n", dev->name);
4018
4019 if (unlikely(skb->len <= 0)) {
4020 DBG_PRINT(TX_DBG, "%s: Buffer has no data..\n", dev->name);
4021 dev_kfree_skb_any(skb);
4022 return NETDEV_TX_OK;
4023 }
4024
4025 if (!is_s2io_card_up(sp)) {
4026 DBG_PRINT(TX_DBG, "%s: Card going down for reset\n",
4027 dev->name);
4028 dev_kfree_skb_any(skb);
4029 return NETDEV_TX_OK;
4030 }
4031
4032 queue = 0;
4033 if (skb_vlan_tag_present(skb))
4034 vlan_tag = skb_vlan_tag_get(skb);
4035 if (sp->config.tx_steering_type == TX_DEFAULT_STEERING) {
4036 if (skb->protocol == htons(ETH_P_IP)) {
4037 struct iphdr *ip;
4038 struct tcphdr *th;
4039 ip = ip_hdr(skb);
4040
4041 if (!ip_is_fragment(ip)) {
4042 th = (struct tcphdr *)(((unsigned char *)ip) +
4043 ip->ihl*4);
4044
4045 if (ip->protocol == IPPROTO_TCP) {
4046 queue_len = sp->total_tcp_fifos;
4047 queue = (ntohs(th->source) +
4048 ntohs(th->dest)) &
4049 sp->fifo_selector[queue_len - 1];
4050 if (queue >= queue_len)
4051 queue = queue_len - 1;
4052 } else if (ip->protocol == IPPROTO_UDP) {
4053 queue_len = sp->total_udp_fifos;
4054 queue = (ntohs(th->source) +
4055 ntohs(th->dest)) &
4056 sp->fifo_selector[queue_len - 1];
4057 if (queue >= queue_len)
4058 queue = queue_len - 1;
4059 queue += sp->udp_fifo_idx;
4060 if (skb->len > 1024)
4061 enable_per_list_interrupt = 1;
4062 }
4063 }
4064 }
4065 } else if (sp->config.tx_steering_type == TX_PRIORITY_STEERING)
4066 /* get fifo number based on skb->priority value */
4067 queue = config->fifo_mapping
4068 [skb->priority & (MAX_TX_FIFOS - 1)];
4069 fifo = &mac_control->fifos[queue];
4070
4071 spin_lock_irqsave(&fifo->tx_lock, flags);
4072
4073 if (sp->config.multiq) {
4074 if (__netif_subqueue_stopped(dev, fifo->fifo_no)) {
4075 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4076 return NETDEV_TX_BUSY;
4077 }
4078 } else if (unlikely(fifo->queue_state == FIFO_QUEUE_STOP)) {
4079 if (netif_queue_stopped(dev)) {
4080 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4081 return NETDEV_TX_BUSY;
4082 }
4083 }
4084
4085 put_off = (u16)fifo->tx_curr_put_info.offset;
4086 get_off = (u16)fifo->tx_curr_get_info.offset;
4087 txdp = fifo->list_info[put_off].list_virt_addr;
4088
4089 queue_len = fifo->tx_curr_put_info.fifo_len + 1;
4090 /* Avoid "put" pointer going beyond "get" pointer */
4091 if (txdp->Host_Control ||
4092 ((put_off+1) == queue_len ? 0 : (put_off+1)) == get_off) {
4093 DBG_PRINT(TX_DBG, "Error in xmit, No free TXDs.\n");
4094 s2io_stop_tx_queue(sp, fifo->fifo_no);
4095 dev_kfree_skb_any(skb);
4096 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4097 return NETDEV_TX_OK;
4098 }
4099
4100 offload_type = s2io_offload_type(skb);
4101 if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
4102 txdp->Control_1 |= TXD_TCP_LSO_EN;
4103 txdp->Control_1 |= TXD_TCP_LSO_MSS(s2io_tcp_mss(skb));
4104 }
4105 if (skb->ip_summed == CHECKSUM_PARTIAL) {
4106 txdp->Control_2 |= (TXD_TX_CKO_IPV4_EN |
4107 TXD_TX_CKO_TCP_EN |
4108 TXD_TX_CKO_UDP_EN);
4109 }
4110 txdp->Control_1 |= TXD_GATHER_CODE_FIRST;
4111 txdp->Control_1 |= TXD_LIST_OWN_XENA;
4112 txdp->Control_2 |= TXD_INT_NUMBER(fifo->fifo_no);
4113 if (enable_per_list_interrupt)
4114 if (put_off & (queue_len >> 5))
4115 txdp->Control_2 |= TXD_INT_TYPE_PER_LIST;
4116 if (vlan_tag) {
4117 txdp->Control_2 |= TXD_VLAN_ENABLE;
4118 txdp->Control_2 |= TXD_VLAN_TAG(vlan_tag);
4119 }
4120
4121 frg_len = skb_headlen(skb);
4122 txdp->Buffer_Pointer = pci_map_single(sp->pdev, skb->data,
4123 frg_len, PCI_DMA_TODEVICE);
4124 if (pci_dma_mapping_error(sp->pdev, txdp->Buffer_Pointer))
4125 goto pci_map_failed;
4126
4127 txdp->Host_Control = (unsigned long)skb;
4128 txdp->Control_1 |= TXD_BUFFER0_SIZE(frg_len);
4129
4130 frg_cnt = skb_shinfo(skb)->nr_frags;
4131 /* For fragmented SKB. */
4132 for (i = 0; i < frg_cnt; i++) {
4133 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4134 /* A '0' length fragment will be ignored */
4135 if (!skb_frag_size(frag))
4136 continue;
4137 txdp++;
4138 txdp->Buffer_Pointer = (u64)skb_frag_dma_map(&sp->pdev->dev,
4139 frag, 0,
4140 skb_frag_size(frag),
4141 DMA_TO_DEVICE);
4142 txdp->Control_1 = TXD_BUFFER0_SIZE(skb_frag_size(frag));
4143 }
4144 txdp->Control_1 |= TXD_GATHER_CODE_LAST;
4145
4146 tx_fifo = mac_control->tx_FIFO_start[queue];
4147 val64 = fifo->list_info[put_off].list_phy_addr;
4148 writeq(val64, &tx_fifo->TxDL_Pointer);
4149
4150 val64 = (TX_FIFO_LAST_TXD_NUM(frg_cnt) | TX_FIFO_FIRST_LIST |
4151 TX_FIFO_LAST_LIST);
4152 if (offload_type)
4153 val64 |= TX_FIFO_SPECIAL_FUNC;
4154
4155 writeq(val64, &tx_fifo->List_Control);
4156
4157 mmiowb();
4158
4159 put_off++;
4160 if (put_off == fifo->tx_curr_put_info.fifo_len + 1)
4161 put_off = 0;
4162 fifo->tx_curr_put_info.offset = put_off;
4163
4164 /* Avoid "put" pointer going beyond "get" pointer */
4165 if (((put_off+1) == queue_len ? 0 : (put_off+1)) == get_off) {
4166 swstats->fifo_full_cnt++;
4167 DBG_PRINT(TX_DBG,
4168 "No free TxDs for xmit, Put: 0x%x Get:0x%x\n",
4169 put_off, get_off);
4170 s2io_stop_tx_queue(sp, fifo->fifo_no);
4171 }
4172 swstats->mem_allocated += skb->truesize;
4173 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4174
4175 if (sp->config.intr_type == MSI_X)
4176 tx_intr_handler(fifo);
4177
4178 return NETDEV_TX_OK;
4179
4180 pci_map_failed:
4181 swstats->pci_map_fail_cnt++;
4182 s2io_stop_tx_queue(sp, fifo->fifo_no);
4183 swstats->mem_freed += skb->truesize;
4184 dev_kfree_skb_any(skb);
4185 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4186 return NETDEV_TX_OK;
4187 }
4188
4189 static void
4190 s2io_alarm_handle(struct timer_list *t)
4191 {
4192 struct s2io_nic *sp = from_timer(sp, t, alarm_timer);
4193 struct net_device *dev = sp->dev;
4194
4195 s2io_handle_errors(dev);
4196 mod_timer(&sp->alarm_timer, jiffies + HZ / 2);
4197 }
4198
4199 static irqreturn_t s2io_msix_ring_handle(int irq, void *dev_id)
4200 {
4201 struct ring_info *ring = (struct ring_info *)dev_id;
4202 struct s2io_nic *sp = ring->nic;
4203 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4204
4205 if (unlikely(!is_s2io_card_up(sp)))
4206 return IRQ_HANDLED;
4207
4208 if (sp->config.napi) {
4209 u8 __iomem *addr = NULL;
4210 u8 val8 = 0;
4211
4212 addr = (u8 __iomem *)&bar0->xmsi_mask_reg;
4213 addr += (7 - ring->ring_no);
4214 val8 = (ring->ring_no == 0) ? 0x7f : 0xff;
4215 writeb(val8, addr);
4216 val8 = readb(addr);
4217 napi_schedule(&ring->napi);
4218 } else {
4219 rx_intr_handler(ring, 0);
4220 s2io_chk_rx_buffers(sp, ring);
4221 }
4222
4223 return IRQ_HANDLED;
4224 }
4225
4226 static irqreturn_t s2io_msix_fifo_handle(int irq, void *dev_id)
4227 {
4228 int i;
4229 struct fifo_info *fifos = (struct fifo_info *)dev_id;
4230 struct s2io_nic *sp = fifos->nic;
4231 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4232 struct config_param *config = &sp->config;
4233 u64 reason;
4234
4235 if (unlikely(!is_s2io_card_up(sp)))
4236 return IRQ_NONE;
4237
4238 reason = readq(&bar0->general_int_status);
4239 if (unlikely(reason == S2IO_MINUS_ONE))
4240 /* Nothing much can be done. Get out */
4241 return IRQ_HANDLED;
4242
4243 if (reason & (GEN_INTR_TXPIC | GEN_INTR_TXTRAFFIC)) {
4244 writeq(S2IO_MINUS_ONE, &bar0->general_int_mask);
4245
4246 if (reason & GEN_INTR_TXPIC)
4247 s2io_txpic_intr_handle(sp);
4248
4249 if (reason & GEN_INTR_TXTRAFFIC)
4250 writeq(S2IO_MINUS_ONE, &bar0->tx_traffic_int);
4251
4252 for (i = 0; i < config->tx_fifo_num; i++)
4253 tx_intr_handler(&fifos[i]);
4254
4255 writeq(sp->general_int_mask, &bar0->general_int_mask);
4256 readl(&bar0->general_int_status);
4257 return IRQ_HANDLED;
4258 }
4259 /* The interrupt was not raised by us */
4260 return IRQ_NONE;
4261 }
4262
4263 static void s2io_txpic_intr_handle(struct s2io_nic *sp)
4264 {
4265 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4266 u64 val64;
4267
4268 val64 = readq(&bar0->pic_int_status);
4269 if (val64 & PIC_INT_GPIO) {
4270 val64 = readq(&bar0->gpio_int_reg);
4271 if ((val64 & GPIO_INT_REG_LINK_DOWN) &&
4272 (val64 & GPIO_INT_REG_LINK_UP)) {
4273 /*
4274 * This is unstable state so clear both up/down
4275 * interrupt and adapter to re-evaluate the link state.
4276 */
4277 val64 |= GPIO_INT_REG_LINK_DOWN;
4278 val64 |= GPIO_INT_REG_LINK_UP;
4279 writeq(val64, &bar0->gpio_int_reg);
4280 val64 = readq(&bar0->gpio_int_mask);
4281 val64 &= ~(GPIO_INT_MASK_LINK_UP |
4282 GPIO_INT_MASK_LINK_DOWN);
4283 writeq(val64, &bar0->gpio_int_mask);
4284 } else if (val64 & GPIO_INT_REG_LINK_UP) {
4285 val64 = readq(&bar0->adapter_status);
4286 /* Enable Adapter */
4287 val64 = readq(&bar0->adapter_control);
4288 val64 |= ADAPTER_CNTL_EN;
4289 writeq(val64, &bar0->adapter_control);
4290 val64 |= ADAPTER_LED_ON;
4291 writeq(val64, &bar0->adapter_control);
4292 if (!sp->device_enabled_once)
4293 sp->device_enabled_once = 1;
4294
4295 s2io_link(sp, LINK_UP);
4296 /*
4297 * unmask link down interrupt and mask link-up
4298 * intr
4299 */
4300 val64 = readq(&bar0->gpio_int_mask);
4301 val64 &= ~GPIO_INT_MASK_LINK_DOWN;
4302 val64 |= GPIO_INT_MASK_LINK_UP;
4303 writeq(val64, &bar0->gpio_int_mask);
4304
4305 } else if (val64 & GPIO_INT_REG_LINK_DOWN) {
4306 val64 = readq(&bar0->adapter_status);
4307 s2io_link(sp, LINK_DOWN);
4308 /* Link is down so unmaks link up interrupt */
4309 val64 = readq(&bar0->gpio_int_mask);
4310 val64 &= ~GPIO_INT_MASK_LINK_UP;
4311 val64 |= GPIO_INT_MASK_LINK_DOWN;
4312 writeq(val64, &bar0->gpio_int_mask);
4313
4314 /* turn off LED */
4315 val64 = readq(&bar0->adapter_control);
4316 val64 = val64 & (~ADAPTER_LED_ON);
4317 writeq(val64, &bar0->adapter_control);
4318 }
4319 }
4320 val64 = readq(&bar0->gpio_int_mask);
4321 }
4322
4323 /**
4324 * do_s2io_chk_alarm_bit - Check for alarm and incrment the counter
4325 * @value: alarm bits
4326 * @addr: address value
4327 * @cnt: counter variable
4328 * Description: Check for alarm and increment the counter
4329 * Return Value:
4330 * 1 - if alarm bit set
4331 * 0 - if alarm bit is not set
4332 */
4333 static int do_s2io_chk_alarm_bit(u64 value, void __iomem *addr,
4334 unsigned long long *cnt)
4335 {
4336 u64 val64;
4337 val64 = readq(addr);
4338 if (val64 & value) {
4339 writeq(val64, addr);
4340 (*cnt)++;
4341 return 1;
4342 }
4343 return 0;
4344
4345 }
4346
4347 /**
4348 * s2io_handle_errors - Xframe error indication handler
4349 * @nic: device private variable
4350 * Description: Handle alarms such as loss of link, single or
4351 * double ECC errors, critical and serious errors.
4352 * Return Value:
4353 * NONE
4354 */
4355 static void s2io_handle_errors(void *dev_id)
4356 {
4357 struct net_device *dev = (struct net_device *)dev_id;
4358 struct s2io_nic *sp = netdev_priv(dev);
4359 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4360 u64 temp64 = 0, val64 = 0;
4361 int i = 0;
4362
4363 struct swStat *sw_stat = &sp->mac_control.stats_info->sw_stat;
4364 struct xpakStat *stats = &sp->mac_control.stats_info->xpak_stat;
4365
4366 if (!is_s2io_card_up(sp))
4367 return;
4368
4369 if (pci_channel_offline(sp->pdev))
4370 return;
4371
4372 memset(&sw_stat->ring_full_cnt, 0,
4373 sizeof(sw_stat->ring_full_cnt));
4374
4375 /* Handling the XPAK counters update */
4376 if (stats->xpak_timer_count < 72000) {
4377 /* waiting for an hour */
4378 stats->xpak_timer_count++;
4379 } else {
4380 s2io_updt_xpak_counter(dev);
4381 /* reset the count to zero */
4382 stats->xpak_timer_count = 0;
4383 }
4384
4385 /* Handling link status change error Intr */
4386 if (s2io_link_fault_indication(sp) == MAC_RMAC_ERR_TIMER) {
4387 val64 = readq(&bar0->mac_rmac_err_reg);
4388 writeq(val64, &bar0->mac_rmac_err_reg);
4389 if (val64 & RMAC_LINK_STATE_CHANGE_INT)
4390 schedule_work(&sp->set_link_task);
4391 }
4392
4393 /* In case of a serious error, the device will be Reset. */
4394 if (do_s2io_chk_alarm_bit(SERR_SOURCE_ANY, &bar0->serr_source,
4395 &sw_stat->serious_err_cnt))
4396 goto reset;
4397
4398 /* Check for data parity error */
4399 if (do_s2io_chk_alarm_bit(GPIO_INT_REG_DP_ERR_INT, &bar0->gpio_int_reg,
4400 &sw_stat->parity_err_cnt))
4401 goto reset;
4402
4403 /* Check for ring full counter */
4404 if (sp->device_type == XFRAME_II_DEVICE) {
4405 val64 = readq(&bar0->ring_bump_counter1);
4406 for (i = 0; i < 4; i++) {
4407 temp64 = (val64 & vBIT(0xFFFF, (i*16), 16));
4408 temp64 >>= 64 - ((i+1)*16);
4409 sw_stat->ring_full_cnt[i] += temp64;
4410 }
4411
4412 val64 = readq(&bar0->ring_bump_counter2);
4413 for (i = 0; i < 4; i++) {
4414 temp64 = (val64 & vBIT(0xFFFF, (i*16), 16));
4415 temp64 >>= 64 - ((i+1)*16);
4416 sw_stat->ring_full_cnt[i+4] += temp64;
4417 }
4418 }
4419
4420 val64 = readq(&bar0->txdma_int_status);
4421 /*check for pfc_err*/
4422 if (val64 & TXDMA_PFC_INT) {
4423 if (do_s2io_chk_alarm_bit(PFC_ECC_DB_ERR | PFC_SM_ERR_ALARM |
4424 PFC_MISC_0_ERR | PFC_MISC_1_ERR |
4425 PFC_PCIX_ERR,
4426 &bar0->pfc_err_reg,
4427 &sw_stat->pfc_err_cnt))
4428 goto reset;
4429 do_s2io_chk_alarm_bit(PFC_ECC_SG_ERR,
4430 &bar0->pfc_err_reg,
4431 &sw_stat->pfc_err_cnt);
4432 }
4433
4434 /*check for tda_err*/
4435 if (val64 & TXDMA_TDA_INT) {
4436 if (do_s2io_chk_alarm_bit(TDA_Fn_ECC_DB_ERR |
4437 TDA_SM0_ERR_ALARM |
4438 TDA_SM1_ERR_ALARM,
4439 &bar0->tda_err_reg,
4440 &sw_stat->tda_err_cnt))
4441 goto reset;
4442 do_s2io_chk_alarm_bit(TDA_Fn_ECC_SG_ERR | TDA_PCIX_ERR,
4443 &bar0->tda_err_reg,
4444 &sw_stat->tda_err_cnt);
4445 }
4446 /*check for pcc_err*/
4447 if (val64 & TXDMA_PCC_INT) {
4448 if (do_s2io_chk_alarm_bit(PCC_SM_ERR_ALARM | PCC_WR_ERR_ALARM |
4449 PCC_N_SERR | PCC_6_COF_OV_ERR |
4450 PCC_7_COF_OV_ERR | PCC_6_LSO_OV_ERR |
4451 PCC_7_LSO_OV_ERR | PCC_FB_ECC_DB_ERR |
4452 PCC_TXB_ECC_DB_ERR,
4453 &bar0->pcc_err_reg,
4454 &sw_stat->pcc_err_cnt))
4455 goto reset;
4456 do_s2io_chk_alarm_bit(PCC_FB_ECC_SG_ERR | PCC_TXB_ECC_SG_ERR,
4457 &bar0->pcc_err_reg,
4458 &sw_stat->pcc_err_cnt);
4459 }
4460
4461 /*check for tti_err*/
4462 if (val64 & TXDMA_TTI_INT) {
4463 if (do_s2io_chk_alarm_bit(TTI_SM_ERR_ALARM,
4464 &bar0->tti_err_reg,
4465 &sw_stat->tti_err_cnt))
4466 goto reset;
4467 do_s2io_chk_alarm_bit(TTI_ECC_SG_ERR | TTI_ECC_DB_ERR,
4468 &bar0->tti_err_reg,
4469 &sw_stat->tti_err_cnt);
4470 }
4471
4472 /*check for lso_err*/
4473 if (val64 & TXDMA_LSO_INT) {
4474 if (do_s2io_chk_alarm_bit(LSO6_ABORT | LSO7_ABORT |
4475 LSO6_SM_ERR_ALARM | LSO7_SM_ERR_ALARM,
4476 &bar0->lso_err_reg,
4477 &sw_stat->lso_err_cnt))
4478 goto reset;
4479 do_s2io_chk_alarm_bit(LSO6_SEND_OFLOW | LSO7_SEND_OFLOW,
4480 &bar0->lso_err_reg,
4481 &sw_stat->lso_err_cnt);
4482 }
4483
4484 /*check for tpa_err*/
4485 if (val64 & TXDMA_TPA_INT) {
4486 if (do_s2io_chk_alarm_bit(TPA_SM_ERR_ALARM,
4487 &bar0->tpa_err_reg,
4488 &sw_stat->tpa_err_cnt))
4489 goto reset;
4490 do_s2io_chk_alarm_bit(TPA_TX_FRM_DROP,
4491 &bar0->tpa_err_reg,
4492 &sw_stat->tpa_err_cnt);
4493 }
4494
4495 /*check for sm_err*/
4496 if (val64 & TXDMA_SM_INT) {
4497 if (do_s2io_chk_alarm_bit(SM_SM_ERR_ALARM,
4498 &bar0->sm_err_reg,
4499 &sw_stat->sm_err_cnt))
4500 goto reset;
4501 }
4502
4503 val64 = readq(&bar0->mac_int_status);
4504 if (val64 & MAC_INT_STATUS_TMAC_INT) {
4505 if (do_s2io_chk_alarm_bit(TMAC_TX_BUF_OVRN | TMAC_TX_SM_ERR,
4506 &bar0->mac_tmac_err_reg,
4507 &sw_stat->mac_tmac_err_cnt))
4508 goto reset;
4509 do_s2io_chk_alarm_bit(TMAC_ECC_SG_ERR | TMAC_ECC_DB_ERR |
4510 TMAC_DESC_ECC_SG_ERR |
4511 TMAC_DESC_ECC_DB_ERR,
4512 &bar0->mac_tmac_err_reg,
4513 &sw_stat->mac_tmac_err_cnt);
4514 }
4515
4516 val64 = readq(&bar0->xgxs_int_status);
4517 if (val64 & XGXS_INT_STATUS_TXGXS) {
4518 if (do_s2io_chk_alarm_bit(TXGXS_ESTORE_UFLOW | TXGXS_TX_SM_ERR,
4519 &bar0->xgxs_txgxs_err_reg,
4520 &sw_stat->xgxs_txgxs_err_cnt))
4521 goto reset;
4522 do_s2io_chk_alarm_bit(TXGXS_ECC_SG_ERR | TXGXS_ECC_DB_ERR,
4523 &bar0->xgxs_txgxs_err_reg,
4524 &sw_stat->xgxs_txgxs_err_cnt);
4525 }
4526
4527 val64 = readq(&bar0->rxdma_int_status);
4528 if (val64 & RXDMA_INT_RC_INT_M) {
4529 if (do_s2io_chk_alarm_bit(RC_PRCn_ECC_DB_ERR |
4530 RC_FTC_ECC_DB_ERR |
4531 RC_PRCn_SM_ERR_ALARM |
4532 RC_FTC_SM_ERR_ALARM,
4533 &bar0->rc_err_reg,
4534 &sw_stat->rc_err_cnt))
4535 goto reset;
4536 do_s2io_chk_alarm_bit(RC_PRCn_ECC_SG_ERR |
4537 RC_FTC_ECC_SG_ERR |
4538 RC_RDA_FAIL_WR_Rn, &bar0->rc_err_reg,
4539 &sw_stat->rc_err_cnt);
4540 if (do_s2io_chk_alarm_bit(PRC_PCI_AB_RD_Rn |
4541 PRC_PCI_AB_WR_Rn |
4542 PRC_PCI_AB_F_WR_Rn,
4543 &bar0->prc_pcix_err_reg,
4544 &sw_stat->prc_pcix_err_cnt))
4545 goto reset;
4546 do_s2io_chk_alarm_bit(PRC_PCI_DP_RD_Rn |
4547 PRC_PCI_DP_WR_Rn |
4548 PRC_PCI_DP_F_WR_Rn,
4549 &bar0->prc_pcix_err_reg,
4550 &sw_stat->prc_pcix_err_cnt);
4551 }
4552
4553 if (val64 & RXDMA_INT_RPA_INT_M) {
4554 if (do_s2io_chk_alarm_bit(RPA_SM_ERR_ALARM | RPA_CREDIT_ERR,
4555 &bar0->rpa_err_reg,
4556 &sw_stat->rpa_err_cnt))
4557 goto reset;
4558 do_s2io_chk_alarm_bit(RPA_ECC_SG_ERR | RPA_ECC_DB_ERR,
4559 &bar0->rpa_err_reg,
4560 &sw_stat->rpa_err_cnt);
4561 }
4562
4563 if (val64 & RXDMA_INT_RDA_INT_M) {
4564 if (do_s2io_chk_alarm_bit(RDA_RXDn_ECC_DB_ERR |
4565 RDA_FRM_ECC_DB_N_AERR |
4566 RDA_SM1_ERR_ALARM |
4567 RDA_SM0_ERR_ALARM |
4568 RDA_RXD_ECC_DB_SERR,
4569 &bar0->rda_err_reg,
4570 &sw_stat->rda_err_cnt))
4571 goto reset;
4572 do_s2io_chk_alarm_bit(RDA_RXDn_ECC_SG_ERR |
4573 RDA_FRM_ECC_SG_ERR |
4574 RDA_MISC_ERR |
4575 RDA_PCIX_ERR,
4576 &bar0->rda_err_reg,
4577 &sw_stat->rda_err_cnt);
4578 }
4579
4580 if (val64 & RXDMA_INT_RTI_INT_M) {
4581 if (do_s2io_chk_alarm_bit(RTI_SM_ERR_ALARM,
4582 &bar0->rti_err_reg,
4583 &sw_stat->rti_err_cnt))
4584 goto reset;
4585 do_s2io_chk_alarm_bit(RTI_ECC_SG_ERR | RTI_ECC_DB_ERR,
4586 &bar0->rti_err_reg,
4587 &sw_stat->rti_err_cnt);
4588 }
4589
4590 val64 = readq(&bar0->mac_int_status);
4591 if (val64 & MAC_INT_STATUS_RMAC_INT) {
4592 if (do_s2io_chk_alarm_bit(RMAC_RX_BUFF_OVRN | RMAC_RX_SM_ERR,
4593 &bar0->mac_rmac_err_reg,
4594 &sw_stat->mac_rmac_err_cnt))
4595 goto reset;
4596 do_s2io_chk_alarm_bit(RMAC_UNUSED_INT |
4597 RMAC_SINGLE_ECC_ERR |
4598 RMAC_DOUBLE_ECC_ERR,
4599 &bar0->mac_rmac_err_reg,
4600 &sw_stat->mac_rmac_err_cnt);
4601 }
4602
4603 val64 = readq(&bar0->xgxs_int_status);
4604 if (val64 & XGXS_INT_STATUS_RXGXS) {
4605 if (do_s2io_chk_alarm_bit(RXGXS_ESTORE_OFLOW | RXGXS_RX_SM_ERR,
4606 &bar0->xgxs_rxgxs_err_reg,
4607 &sw_stat->xgxs_rxgxs_err_cnt))
4608 goto reset;
4609 }
4610
4611 val64 = readq(&bar0->mc_int_status);
4612 if (val64 & MC_INT_STATUS_MC_INT) {
4613 if (do_s2io_chk_alarm_bit(MC_ERR_REG_SM_ERR,
4614 &bar0->mc_err_reg,
4615 &sw_stat->mc_err_cnt))
4616 goto reset;
4617
4618 /* Handling Ecc errors */
4619 if (val64 & (MC_ERR_REG_ECC_ALL_SNG | MC_ERR_REG_ECC_ALL_DBL)) {
4620 writeq(val64, &bar0->mc_err_reg);
4621 if (val64 & MC_ERR_REG_ECC_ALL_DBL) {
4622 sw_stat->double_ecc_errs++;
4623 if (sp->device_type != XFRAME_II_DEVICE) {
4624 /*
4625 * Reset XframeI only if critical error
4626 */
4627 if (val64 &
4628 (MC_ERR_REG_MIRI_ECC_DB_ERR_0 |
4629 MC_ERR_REG_MIRI_ECC_DB_ERR_1))
4630 goto reset;
4631 }
4632 } else
4633 sw_stat->single_ecc_errs++;
4634 }
4635 }
4636 return;
4637
4638 reset:
4639 s2io_stop_all_tx_queue(sp);
4640 schedule_work(&sp->rst_timer_task);
4641 sw_stat->soft_reset_cnt++;
4642 }
4643
4644 /**
4645 * s2io_isr - ISR handler of the device .
4646 * @irq: the irq of the device.
4647 * @dev_id: a void pointer to the dev structure of the NIC.
4648 * Description: This function is the ISR handler of the device. It
4649 * identifies the reason for the interrupt and calls the relevant
4650 * service routines. As a contongency measure, this ISR allocates the
4651 * recv buffers, if their numbers are below the panic value which is
4652 * presently set to 25% of the original number of rcv buffers allocated.
4653 * Return value:
4654 * IRQ_HANDLED: will be returned if IRQ was handled by this routine
4655 * IRQ_NONE: will be returned if interrupt is not from our device
4656 */
4657 static irqreturn_t s2io_isr(int irq, void *dev_id)
4658 {
4659 struct net_device *dev = (struct net_device *)dev_id;
4660 struct s2io_nic *sp = netdev_priv(dev);
4661 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4662 int i;
4663 u64 reason = 0;
4664 struct mac_info *mac_control;
4665 struct config_param *config;
4666
4667 /* Pretend we handled any irq's from a disconnected card */
4668 if (pci_channel_offline(sp->pdev))
4669 return IRQ_NONE;
4670
4671 if (!is_s2io_card_up(sp))
4672 return IRQ_NONE;
4673
4674 config = &sp->config;
4675 mac_control = &sp->mac_control;
4676
4677 /*
4678 * Identify the cause for interrupt and call the appropriate
4679 * interrupt handler. Causes for the interrupt could be;
4680 * 1. Rx of packet.
4681 * 2. Tx complete.
4682 * 3. Link down.
4683 */
4684 reason = readq(&bar0->general_int_status);
4685
4686 if (unlikely(reason == S2IO_MINUS_ONE))
4687 return IRQ_HANDLED; /* Nothing much can be done. Get out */
4688
4689 if (reason &
4690 (GEN_INTR_RXTRAFFIC | GEN_INTR_TXTRAFFIC | GEN_INTR_TXPIC)) {
4691 writeq(S2IO_MINUS_ONE, &bar0->general_int_mask);
4692
4693 if (config->napi) {
4694 if (reason & GEN_INTR_RXTRAFFIC) {
4695 napi_schedule(&sp->napi);
4696 writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_mask);
4697 writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
4698 readl(&bar0->rx_traffic_int);
4699 }
4700 } else {
4701 /*
4702 * rx_traffic_int reg is an R1 register, writing all 1's
4703 * will ensure that the actual interrupt causing bit
4704 * get's cleared and hence a read can be avoided.
4705 */
4706 if (reason & GEN_INTR_RXTRAFFIC)
4707 writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
4708
4709 for (i = 0; i < config->rx_ring_num; i++) {
4710 struct ring_info *ring = &mac_control->rings[i];
4711
4712 rx_intr_handler(ring, 0);
4713 }
4714 }
4715
4716 /*
4717 * tx_traffic_int reg is an R1 register, writing all 1's
4718 * will ensure that the actual interrupt causing bit get's
4719 * cleared and hence a read can be avoided.
4720 */
4721 if (reason & GEN_INTR_TXTRAFFIC)
4722 writeq(S2IO_MINUS_ONE, &bar0->tx_traffic_int);
4723
4724 for (i = 0; i < config->tx_fifo_num; i++)
4725 tx_intr_handler(&mac_control->fifos[i]);
4726
4727 if (reason & GEN_INTR_TXPIC)
4728 s2io_txpic_intr_handle(sp);
4729
4730 /*
4731 * Reallocate the buffers from the interrupt handler itself.
4732 */
4733 if (!config->napi) {
4734 for (i = 0; i < config->rx_ring_num; i++) {
4735 struct ring_info *ring = &mac_control->rings[i];
4736
4737 s2io_chk_rx_buffers(sp, ring);
4738 }
4739 }
4740 writeq(sp->general_int_mask, &bar0->general_int_mask);
4741 readl(&bar0->general_int_status);
4742
4743 return IRQ_HANDLED;
4744
4745 } else if (!reason) {
4746 /* The interrupt was not raised by us */
4747 return IRQ_NONE;
4748 }
4749
4750 return IRQ_HANDLED;
4751 }
4752
4753 /**
4754 * s2io_updt_stats -
4755 */
4756 static void s2io_updt_stats(struct s2io_nic *sp)
4757 {
4758 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4759 u64 val64;
4760 int cnt = 0;
4761
4762 if (is_s2io_card_up(sp)) {
4763 /* Apprx 30us on a 133 MHz bus */
4764 val64 = SET_UPDT_CLICKS(10) |
4765 STAT_CFG_ONE_SHOT_EN | STAT_CFG_STAT_EN;
4766 writeq(val64, &bar0->stat_cfg);
4767 do {
4768 udelay(100);
4769 val64 = readq(&bar0->stat_cfg);
4770 if (!(val64 & s2BIT(0)))
4771 break;
4772 cnt++;
4773 if (cnt == 5)
4774 break; /* Updt failed */
4775 } while (1);
4776 }
4777 }
4778
4779 /**
4780 * s2io_get_stats - Updates the device statistics structure.
4781 * @dev : pointer to the device structure.
4782 * Description:
4783 * This function updates the device statistics structure in the s2io_nic
4784 * structure and returns a pointer to the same.
4785 * Return value:
4786 * pointer to the updated net_device_stats structure.
4787 */
4788 static struct net_device_stats *s2io_get_stats(struct net_device *dev)
4789 {
4790 struct s2io_nic *sp = netdev_priv(dev);
4791 struct mac_info *mac_control = &sp->mac_control;
4792 struct stat_block *stats = mac_control->stats_info;
4793 u64 delta;
4794
4795 /* Configure Stats for immediate updt */
4796 s2io_updt_stats(sp);
4797
4798 /* A device reset will cause the on-adapter statistics to be zero'ed.
4799 * This can be done while running by changing the MTU. To prevent the
4800 * system from having the stats zero'ed, the driver keeps a copy of the
4801 * last update to the system (which is also zero'ed on reset). This
4802 * enables the driver to accurately know the delta between the last
4803 * update and the current update.
4804 */
4805 delta = ((u64) le32_to_cpu(stats->rmac_vld_frms_oflow) << 32 |
4806 le32_to_cpu(stats->rmac_vld_frms)) - sp->stats.rx_packets;
4807 sp->stats.rx_packets += delta;
4808 dev->stats.rx_packets += delta;
4809
4810 delta = ((u64) le32_to_cpu(stats->tmac_frms_oflow) << 32 |
4811 le32_to_cpu(stats->tmac_frms)) - sp->stats.tx_packets;
4812 sp->stats.tx_packets += delta;
4813 dev->stats.tx_packets += delta;
4814
4815 delta = ((u64) le32_to_cpu(stats->rmac_data_octets_oflow) << 32 |
4816 le32_to_cpu(stats->rmac_data_octets)) - sp->stats.rx_bytes;
4817 sp->stats.rx_bytes += delta;
4818 dev->stats.rx_bytes += delta;
4819
4820 delta = ((u64) le32_to_cpu(stats->tmac_data_octets_oflow) << 32 |
4821 le32_to_cpu(stats->tmac_data_octets)) - sp->stats.tx_bytes;
4822 sp->stats.tx_bytes += delta;
4823 dev->stats.tx_bytes += delta;
4824
4825 delta = le64_to_cpu(stats->rmac_drop_frms) - sp->stats.rx_errors;
4826 sp->stats.rx_errors += delta;
4827 dev->stats.rx_errors += delta;
4828
4829 delta = ((u64) le32_to_cpu(stats->tmac_any_err_frms_oflow) << 32 |
4830 le32_to_cpu(stats->tmac_any_err_frms)) - sp->stats.tx_errors;
4831 sp->stats.tx_errors += delta;
4832 dev->stats.tx_errors += delta;
4833
4834 delta = le64_to_cpu(stats->rmac_drop_frms) - sp->stats.rx_dropped;
4835 sp->stats.rx_dropped += delta;
4836 dev->stats.rx_dropped += delta;
4837
4838 delta = le64_to_cpu(stats->tmac_drop_frms) - sp->stats.tx_dropped;
4839 sp->stats.tx_dropped += delta;
4840 dev->stats.tx_dropped += delta;
4841
4842 /* The adapter MAC interprets pause frames as multicast packets, but
4843 * does not pass them up. This erroneously increases the multicast
4844 * packet count and needs to be deducted when the multicast frame count
4845 * is queried.
4846 */
4847 delta = (u64) le32_to_cpu(stats->rmac_vld_mcst_frms_oflow) << 32 |
4848 le32_to_cpu(stats->rmac_vld_mcst_frms);
4849 delta -= le64_to_cpu(stats->rmac_pause_ctrl_frms);
4850 delta -= sp->stats.multicast;
4851 sp->stats.multicast += delta;
4852 dev->stats.multicast += delta;
4853
4854 delta = ((u64) le32_to_cpu(stats->rmac_usized_frms_oflow) << 32 |
4855 le32_to_cpu(stats->rmac_usized_frms)) +
4856 le64_to_cpu(stats->rmac_long_frms) - sp->stats.rx_length_errors;
4857 sp->stats.rx_length_errors += delta;
4858 dev->stats.rx_length_errors += delta;
4859
4860 delta = le64_to_cpu(stats->rmac_fcs_err_frms) - sp->stats.rx_crc_errors;
4861 sp->stats.rx_crc_errors += delta;
4862 dev->stats.rx_crc_errors += delta;
4863
4864 return &dev->stats;
4865 }
4866
4867 /**
4868 * s2io_set_multicast - entry point for multicast address enable/disable.
4869 * @dev : pointer to the device structure
4870 * Description:
4871 * This function is a driver entry point which gets called by the kernel
4872 * whenever multicast addresses must be enabled/disabled. This also gets
4873 * called to set/reset promiscuous mode. Depending on the deivce flag, we
4874 * determine, if multicast address must be enabled or if promiscuous mode
4875 * is to be disabled etc.
4876 * Return value:
4877 * void.
4878 */
4879
4880 static void s2io_set_multicast(struct net_device *dev)
4881 {
4882 int i, j, prev_cnt;
4883 struct netdev_hw_addr *ha;
4884 struct s2io_nic *sp = netdev_priv(dev);
4885 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4886 u64 val64 = 0, multi_mac = 0x010203040506ULL, mask =
4887 0xfeffffffffffULL;
4888 u64 dis_addr = S2IO_DISABLE_MAC_ENTRY, mac_addr = 0;
4889 void __iomem *add;
4890 struct config_param *config = &sp->config;
4891
4892 if ((dev->flags & IFF_ALLMULTI) && (!sp->m_cast_flg)) {
4893 /* Enable all Multicast addresses */
4894 writeq(RMAC_ADDR_DATA0_MEM_ADDR(multi_mac),
4895 &bar0->rmac_addr_data0_mem);
4896 writeq(RMAC_ADDR_DATA1_MEM_MASK(mask),
4897 &bar0->rmac_addr_data1_mem);
4898 val64 = RMAC_ADDR_CMD_MEM_WE |
4899 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4900 RMAC_ADDR_CMD_MEM_OFFSET(config->max_mc_addr - 1);
4901 writeq(val64, &bar0->rmac_addr_cmd_mem);
4902 /* Wait till command completes */
4903 wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
4904 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
4905 S2IO_BIT_RESET);
4906
4907 sp->m_cast_flg = 1;
4908 sp->all_multi_pos = config->max_mc_addr - 1;
4909 } else if ((dev->flags & IFF_ALLMULTI) && (sp->m_cast_flg)) {
4910 /* Disable all Multicast addresses */
4911 writeq(RMAC_ADDR_DATA0_MEM_ADDR(dis_addr),
4912 &bar0->rmac_addr_data0_mem);
4913 writeq(RMAC_ADDR_DATA1_MEM_MASK(0x0),
4914 &bar0->rmac_addr_data1_mem);
4915 val64 = RMAC_ADDR_CMD_MEM_WE |
4916 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4917 RMAC_ADDR_CMD_MEM_OFFSET(sp->all_multi_pos);
4918 writeq(val64, &bar0->rmac_addr_cmd_mem);
4919 /* Wait till command completes */
4920 wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
4921 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
4922 S2IO_BIT_RESET);
4923
4924 sp->m_cast_flg = 0;
4925 sp->all_multi_pos = 0;
4926 }
4927
4928 if ((dev->flags & IFF_PROMISC) && (!sp->promisc_flg)) {
4929 /* Put the NIC into promiscuous mode */
4930 add = &bar0->mac_cfg;
4931 val64 = readq(&bar0->mac_cfg);
4932 val64 |= MAC_CFG_RMAC_PROM_ENABLE;
4933
4934 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4935 writel((u32)val64, add);
4936 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4937 writel((u32) (val64 >> 32), (add + 4));
4938
4939 if (vlan_tag_strip != 1) {
4940 val64 = readq(&bar0->rx_pa_cfg);
4941 val64 &= ~RX_PA_CFG_STRIP_VLAN_TAG;
4942 writeq(val64, &bar0->rx_pa_cfg);
4943 sp->vlan_strip_flag = 0;
4944 }
4945
4946 val64 = readq(&bar0->mac_cfg);
4947 sp->promisc_flg = 1;
4948 DBG_PRINT(INFO_DBG, "%s: entered promiscuous mode\n",
4949 dev->name);
4950 } else if (!(dev->flags & IFF_PROMISC) && (sp->promisc_flg)) {
4951 /* Remove the NIC from promiscuous mode */
4952 add = &bar0->mac_cfg;
4953 val64 = readq(&bar0->mac_cfg);
4954 val64 &= ~MAC_CFG_RMAC_PROM_ENABLE;
4955
4956 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4957 writel((u32)val64, add);
4958 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4959 writel((u32) (val64 >> 32), (add + 4));
4960
4961 if (vlan_tag_strip != 0) {
4962 val64 = readq(&bar0->rx_pa_cfg);
4963 val64 |= RX_PA_CFG_STRIP_VLAN_TAG;
4964 writeq(val64, &bar0->rx_pa_cfg);
4965 sp->vlan_strip_flag = 1;
4966 }
4967
4968 val64 = readq(&bar0->mac_cfg);
4969 sp->promisc_flg = 0;
4970 DBG_PRINT(INFO_DBG, "%s: left promiscuous mode\n", dev->name);
4971 }
4972
4973 /* Update individual M_CAST address list */
4974 if ((!sp->m_cast_flg) && netdev_mc_count(dev)) {
4975 if (netdev_mc_count(dev) >
4976 (config->max_mc_addr - config->max_mac_addr)) {
4977 DBG_PRINT(ERR_DBG,
4978 "%s: No more Rx filters can be added - "
4979 "please enable ALL_MULTI instead\n",
4980 dev->name);
4981 return;
4982 }
4983
4984 prev_cnt = sp->mc_addr_count;
4985 sp->mc_addr_count = netdev_mc_count(dev);
4986
4987 /* Clear out the previous list of Mc in the H/W. */
4988 for (i = 0; i < prev_cnt; i++) {
4989 writeq(RMAC_ADDR_DATA0_MEM_ADDR(dis_addr),
4990 &bar0->rmac_addr_data0_mem);
4991 writeq(RMAC_ADDR_DATA1_MEM_MASK(0ULL),
4992 &bar0->rmac_addr_data1_mem);
4993 val64 = RMAC_ADDR_CMD_MEM_WE |
4994 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4995 RMAC_ADDR_CMD_MEM_OFFSET
4996 (config->mc_start_offset + i);
4997 writeq(val64, &bar0->rmac_addr_cmd_mem);
4998
4999 /* Wait for command completes */
5000 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
5001 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
5002 S2IO_BIT_RESET)) {
5003 DBG_PRINT(ERR_DBG,
5004 "%s: Adding Multicasts failed\n",
5005 dev->name);
5006 return;
5007 }
5008 }
5009
5010 /* Create the new Rx filter list and update the same in H/W. */
5011 i = 0;
5012 netdev_for_each_mc_addr(ha, dev) {
5013 mac_addr = 0;
5014 for (j = 0; j < ETH_ALEN; j++) {
5015 mac_addr |= ha->addr[j];
5016 mac_addr <<= 8;
5017 }
5018 mac_addr >>= 8;
5019 writeq(RMAC_ADDR_DATA0_MEM_ADDR(mac_addr),
5020 &bar0->rmac_addr_data0_mem);
5021 writeq(RMAC_ADDR_DATA1_MEM_MASK(0ULL),
5022 &bar0->rmac_addr_data1_mem);
5023 val64 = RMAC_ADDR_CMD_MEM_WE |
5024 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
5025 RMAC_ADDR_CMD_MEM_OFFSET
5026 (i + config->mc_start_offset);
5027 writeq(val64, &bar0->rmac_addr_cmd_mem);
5028
5029 /* Wait for command completes */
5030 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
5031 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
5032 S2IO_BIT_RESET)) {
5033 DBG_PRINT(ERR_DBG,
5034 "%s: Adding Multicasts failed\n",
5035 dev->name);
5036 return;
5037 }
5038 i++;
5039 }
5040 }
5041 }
5042
5043 /* read from CAM unicast & multicast addresses and store it in
5044 * def_mac_addr structure
5045 */
5046 static void do_s2io_store_unicast_mc(struct s2io_nic *sp)
5047 {
5048 int offset;
5049 u64 mac_addr = 0x0;
5050 struct config_param *config = &sp->config;
5051
5052 /* store unicast & multicast mac addresses */
5053 for (offset = 0; offset < config->max_mc_addr; offset++) {
5054 mac_addr = do_s2io_read_unicast_mc(sp, offset);
5055 /* if read fails disable the entry */
5056 if (mac_addr == FAILURE)
5057 mac_addr = S2IO_DISABLE_MAC_ENTRY;
5058 do_s2io_copy_mac_addr(sp, offset, mac_addr);
5059 }
5060 }
5061
5062 /* restore unicast & multicast MAC to CAM from def_mac_addr structure */
5063 static void do_s2io_restore_unicast_mc(struct s2io_nic *sp)
5064 {
5065 int offset;
5066 struct config_param *config = &sp->config;
5067 /* restore unicast mac address */
5068 for (offset = 0; offset < config->max_mac_addr; offset++)
5069 do_s2io_prog_unicast(sp->dev,
5070 sp->def_mac_addr[offset].mac_addr);
5071
5072 /* restore multicast mac address */
5073 for (offset = config->mc_start_offset;
5074 offset < config->max_mc_addr; offset++)
5075 do_s2io_add_mc(sp, sp->def_mac_addr[offset].mac_addr);
5076 }
5077
5078 /* add a multicast MAC address to CAM */
5079 static int do_s2io_add_mc(struct s2io_nic *sp, u8 *addr)
5080 {
5081 int i;
5082 u64 mac_addr = 0;
5083 struct config_param *config = &sp->config;
5084
5085 for (i = 0; i < ETH_ALEN; i++) {
5086 mac_addr <<= 8;
5087 mac_addr |= addr[i];
5088 }
5089 if ((0ULL == mac_addr) || (mac_addr == S2IO_DISABLE_MAC_ENTRY))
5090 return SUCCESS;
5091
5092 /* check if the multicast mac already preset in CAM */
5093 for (i = config->mc_start_offset; i < config->max_mc_addr; i++) {
5094 u64 tmp64;
5095 tmp64 = do_s2io_read_unicast_mc(sp, i);
5096 if (tmp64 == S2IO_DISABLE_MAC_ENTRY) /* CAM entry is empty */
5097 break;
5098
5099 if (tmp64 == mac_addr)
5100 return SUCCESS;
5101 }
5102 if (i == config->max_mc_addr) {
5103 DBG_PRINT(ERR_DBG,
5104 "CAM full no space left for multicast MAC\n");
5105 return FAILURE;
5106 }
5107 /* Update the internal structure with this new mac address */
5108 do_s2io_copy_mac_addr(sp, i, mac_addr);
5109
5110 return do_s2io_add_mac(sp, mac_addr, i);
5111 }
5112
5113 /* add MAC address to CAM */
5114 static int do_s2io_add_mac(struct s2io_nic *sp, u64 addr, int off)
5115 {
5116 u64 val64;
5117 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5118
5119 writeq(RMAC_ADDR_DATA0_MEM_ADDR(addr),
5120 &bar0->rmac_addr_data0_mem);
5121
5122 val64 = RMAC_ADDR_CMD_MEM_WE | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
5123 RMAC_ADDR_CMD_MEM_OFFSET(off);
5124 writeq(val64, &bar0->rmac_addr_cmd_mem);
5125
5126 /* Wait till command completes */
5127 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
5128 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
5129 S2IO_BIT_RESET)) {
5130 DBG_PRINT(INFO_DBG, "do_s2io_add_mac failed\n");
5131 return FAILURE;
5132 }
5133 return SUCCESS;
5134 }
5135 /* deletes a specified unicast/multicast mac entry from CAM */
5136 static int do_s2io_delete_unicast_mc(struct s2io_nic *sp, u64 addr)
5137 {
5138 int offset;
5139 u64 dis_addr = S2IO_DISABLE_MAC_ENTRY, tmp64;
5140 struct config_param *config = &sp->config;
5141
5142 for (offset = 1;
5143 offset < config->max_mc_addr; offset++) {
5144 tmp64 = do_s2io_read_unicast_mc(sp, offset);
5145 if (tmp64 == addr) {
5146 /* disable the entry by writing 0xffffffffffffULL */
5147 if (do_s2io_add_mac(sp, dis_addr, offset) == FAILURE)
5148 return FAILURE;
5149 /* store the new mac list from CAM */
5150 do_s2io_store_unicast_mc(sp);
5151 return SUCCESS;
5152 }
5153 }
5154 DBG_PRINT(ERR_DBG, "MAC address 0x%llx not found in CAM\n",
5155 (unsigned long long)addr);
5156 return FAILURE;
5157 }
5158
5159 /* read mac entries from CAM */
5160 static u64 do_s2io_read_unicast_mc(struct s2io_nic *sp, int offset)
5161 {
5162 u64 tmp64 = 0xffffffffffff0000ULL, val64;
5163 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5164
5165 /* read mac addr */
5166 val64 = RMAC_ADDR_CMD_MEM_RD | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
5167 RMAC_ADDR_CMD_MEM_OFFSET(offset);
5168 writeq(val64, &bar0->rmac_addr_cmd_mem);
5169
5170 /* Wait till command completes */
5171 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
5172 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
5173 S2IO_BIT_RESET)) {
5174 DBG_PRINT(INFO_DBG, "do_s2io_read_unicast_mc failed\n");
5175 return FAILURE;
5176 }
5177 tmp64 = readq(&bar0->rmac_addr_data0_mem);
5178
5179 return tmp64 >> 16;
5180 }
5181
5182 /**
5183 * s2io_set_mac_addr - driver entry point
5184 */
5185
5186 static int s2io_set_mac_addr(struct net_device *dev, void *p)
5187 {
5188 struct sockaddr *addr = p;
5189
5190 if (!is_valid_ether_addr(addr->sa_data))
5191 return -EADDRNOTAVAIL;
5192
5193 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
5194
5195 /* store the MAC address in CAM */
5196 return do_s2io_prog_unicast(dev, dev->dev_addr);
5197 }
5198 /**
5199 * do_s2io_prog_unicast - Programs the Xframe mac address
5200 * @dev : pointer to the device structure.
5201 * @addr: a uchar pointer to the new mac address which is to be set.
5202 * Description : This procedure will program the Xframe to receive
5203 * frames with new Mac Address
5204 * Return value: SUCCESS on success and an appropriate (-)ve integer
5205 * as defined in errno.h file on failure.
5206 */
5207
5208 static int do_s2io_prog_unicast(struct net_device *dev, u8 *addr)
5209 {
5210 struct s2io_nic *sp = netdev_priv(dev);
5211 register u64 mac_addr = 0, perm_addr = 0;
5212 int i;
5213 u64 tmp64;
5214 struct config_param *config = &sp->config;
5215
5216 /*
5217 * Set the new MAC address as the new unicast filter and reflect this
5218 * change on the device address registered with the OS. It will be
5219 * at offset 0.
5220 */
5221 for (i = 0; i < ETH_ALEN; i++) {
5222 mac_addr <<= 8;
5223 mac_addr |= addr[i];
5224 perm_addr <<= 8;
5225 perm_addr |= sp->def_mac_addr[0].mac_addr[i];
5226 }
5227
5228 /* check if the dev_addr is different than perm_addr */
5229 if (mac_addr == perm_addr)
5230 return SUCCESS;
5231
5232 /* check if the mac already preset in CAM */
5233 for (i = 1; i < config->max_mac_addr; i++) {
5234 tmp64 = do_s2io_read_unicast_mc(sp, i);
5235 if (tmp64 == S2IO_DISABLE_MAC_ENTRY) /* CAM entry is empty */
5236 break;
5237
5238 if (tmp64 == mac_addr) {
5239 DBG_PRINT(INFO_DBG,
5240 "MAC addr:0x%llx already present in CAM\n",
5241 (unsigned long long)mac_addr);
5242 return SUCCESS;
5243 }
5244 }
5245 if (i == config->max_mac_addr) {
5246 DBG_PRINT(ERR_DBG, "CAM full no space left for Unicast MAC\n");
5247 return FAILURE;
5248 }
5249 /* Update the internal structure with this new mac address */
5250 do_s2io_copy_mac_addr(sp, i, mac_addr);
5251
5252 return do_s2io_add_mac(sp, mac_addr, i);
5253 }
5254
5255 /**
5256 * s2io_ethtool_set_link_ksettings - Sets different link parameters.
5257 * @sp : private member of the device structure, which is a pointer to the
5258 * s2io_nic structure.
5259 * @cmd: pointer to the structure with parameters given by ethtool to set
5260 * link information.
5261 * Description:
5262 * The function sets different link parameters provided by the user onto
5263 * the NIC.
5264 * Return value:
5265 * 0 on success.
5266 */
5267
5268 static int
5269 s2io_ethtool_set_link_ksettings(struct net_device *dev,
5270 const struct ethtool_link_ksettings *cmd)
5271 {
5272 struct s2io_nic *sp = netdev_priv(dev);
5273 if ((cmd->base.autoneg == AUTONEG_ENABLE) ||
5274 (cmd->base.speed != SPEED_10000) ||
5275 (cmd->base.duplex != DUPLEX_FULL))
5276 return -EINVAL;
5277 else {
5278 s2io_close(sp->dev);
5279 s2io_open(sp->dev);
5280 }
5281
5282 return 0;
5283 }
5284
5285 /**
5286 * s2io_ethtol_get_link_ksettings - Return link specific information.
5287 * @sp : private member of the device structure, pointer to the
5288 * s2io_nic structure.
5289 * @cmd : pointer to the structure with parameters given by ethtool
5290 * to return link information.
5291 * Description:
5292 * Returns link specific information like speed, duplex etc.. to ethtool.
5293 * Return value :
5294 * return 0 on success.
5295 */
5296
5297 static int
5298 s2io_ethtool_get_link_ksettings(struct net_device *dev,
5299 struct ethtool_link_ksettings *cmd)
5300 {
5301 struct s2io_nic *sp = netdev_priv(dev);
5302
5303 ethtool_link_ksettings_zero_link_mode(cmd, supported);
5304 ethtool_link_ksettings_add_link_mode(cmd, supported, 10000baseT_Full);
5305 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
5306
5307 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
5308 ethtool_link_ksettings_add_link_mode(cmd, advertising, 10000baseT_Full);
5309 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
5310
5311 cmd->base.port = PORT_FIBRE;
5312
5313 if (netif_carrier_ok(sp->dev)) {
5314 cmd->base.speed = SPEED_10000;
5315 cmd->base.duplex = DUPLEX_FULL;
5316 } else {
5317 cmd->base.speed = SPEED_UNKNOWN;
5318 cmd->base.duplex = DUPLEX_UNKNOWN;
5319 }
5320
5321 cmd->base.autoneg = AUTONEG_DISABLE;
5322 return 0;
5323 }
5324
5325 /**
5326 * s2io_ethtool_gdrvinfo - Returns driver specific information.
5327 * @sp : private member of the device structure, which is a pointer to the
5328 * s2io_nic structure.
5329 * @info : pointer to the structure with parameters given by ethtool to
5330 * return driver information.
5331 * Description:
5332 * Returns driver specefic information like name, version etc.. to ethtool.
5333 * Return value:
5334 * void
5335 */
5336
5337 static void s2io_ethtool_gdrvinfo(struct net_device *dev,
5338 struct ethtool_drvinfo *info)
5339 {
5340 struct s2io_nic *sp = netdev_priv(dev);
5341
5342 strlcpy(info->driver, s2io_driver_name, sizeof(info->driver));
5343 strlcpy(info->version, s2io_driver_version, sizeof(info->version));
5344 strlcpy(info->bus_info, pci_name(sp->pdev), sizeof(info->bus_info));
5345 }
5346
5347 /**
5348 * s2io_ethtool_gregs - dumps the entire space of Xfame into the buffer.
5349 * @sp: private member of the device structure, which is a pointer to the
5350 * s2io_nic structure.
5351 * @regs : pointer to the structure with parameters given by ethtool for
5352 * dumping the registers.
5353 * @reg_space: The input argument into which all the registers are dumped.
5354 * Description:
5355 * Dumps the entire register space of xFrame NIC into the user given
5356 * buffer area.
5357 * Return value :
5358 * void .
5359 */
5360
5361 static void s2io_ethtool_gregs(struct net_device *dev,
5362 struct ethtool_regs *regs, void *space)
5363 {
5364 int i;
5365 u64 reg;
5366 u8 *reg_space = (u8 *)space;
5367 struct s2io_nic *sp = netdev_priv(dev);
5368
5369 regs->len = XENA_REG_SPACE;
5370 regs->version = sp->pdev->subsystem_device;
5371
5372 for (i = 0; i < regs->len; i += 8) {
5373 reg = readq(sp->bar0 + i);
5374 memcpy((reg_space + i), &reg, 8);
5375 }
5376 }
5377
5378 /*
5379 * s2io_set_led - control NIC led
5380 */
5381 static void s2io_set_led(struct s2io_nic *sp, bool on)
5382 {
5383 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5384 u16 subid = sp->pdev->subsystem_device;
5385 u64 val64;
5386
5387 if ((sp->device_type == XFRAME_II_DEVICE) ||
5388 ((subid & 0xFF) >= 0x07)) {
5389 val64 = readq(&bar0->gpio_control);
5390 if (on)
5391 val64 |= GPIO_CTRL_GPIO_0;
5392 else
5393 val64 &= ~GPIO_CTRL_GPIO_0;
5394
5395 writeq(val64, &bar0->gpio_control);
5396 } else {
5397 val64 = readq(&bar0->adapter_control);
5398 if (on)
5399 val64 |= ADAPTER_LED_ON;
5400 else
5401 val64 &= ~ADAPTER_LED_ON;
5402
5403 writeq(val64, &bar0->adapter_control);
5404 }
5405
5406 }
5407
5408 /**
5409 * s2io_ethtool_set_led - To physically identify the nic on the system.
5410 * @dev : network device
5411 * @state: led setting
5412 *
5413 * Description: Used to physically identify the NIC on the system.
5414 * The Link LED will blink for a time specified by the user for
5415 * identification.
5416 * NOTE: The Link has to be Up to be able to blink the LED. Hence
5417 * identification is possible only if it's link is up.
5418 */
5419
5420 static int s2io_ethtool_set_led(struct net_device *dev,
5421 enum ethtool_phys_id_state state)
5422 {
5423 struct s2io_nic *sp = netdev_priv(dev);
5424 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5425 u16 subid = sp->pdev->subsystem_device;
5426
5427 if ((sp->device_type == XFRAME_I_DEVICE) && ((subid & 0xFF) < 0x07)) {
5428 u64 val64 = readq(&bar0->adapter_control);
5429 if (!(val64 & ADAPTER_CNTL_EN)) {
5430 pr_err("Adapter Link down, cannot blink LED\n");
5431 return -EAGAIN;
5432 }
5433 }
5434
5435 switch (state) {
5436 case ETHTOOL_ID_ACTIVE:
5437 sp->adapt_ctrl_org = readq(&bar0->gpio_control);
5438 return 1; /* cycle on/off once per second */
5439
5440 case ETHTOOL_ID_ON:
5441 s2io_set_led(sp, true);
5442 break;
5443
5444 case ETHTOOL_ID_OFF:
5445 s2io_set_led(sp, false);
5446 break;
5447
5448 case ETHTOOL_ID_INACTIVE:
5449 if (CARDS_WITH_FAULTY_LINK_INDICATORS(sp->device_type, subid))
5450 writeq(sp->adapt_ctrl_org, &bar0->gpio_control);
5451 }
5452
5453 return 0;
5454 }
5455
5456 static void s2io_ethtool_gringparam(struct net_device *dev,
5457 struct ethtool_ringparam *ering)
5458 {
5459 struct s2io_nic *sp = netdev_priv(dev);
5460 int i, tx_desc_count = 0, rx_desc_count = 0;
5461
5462 if (sp->rxd_mode == RXD_MODE_1) {
5463 ering->rx_max_pending = MAX_RX_DESC_1;
5464 ering->rx_jumbo_max_pending = MAX_RX_DESC_1;
5465 } else {
5466 ering->rx_max_pending = MAX_RX_DESC_2;
5467 ering->rx_jumbo_max_pending = MAX_RX_DESC_2;
5468 }
5469
5470 ering->tx_max_pending = MAX_TX_DESC;
5471
5472 for (i = 0; i < sp->config.rx_ring_num; i++)
5473 rx_desc_count += sp->config.rx_cfg[i].num_rxd;
5474 ering->rx_pending = rx_desc_count;
5475 ering->rx_jumbo_pending = rx_desc_count;
5476
5477 for (i = 0; i < sp->config.tx_fifo_num; i++)
5478 tx_desc_count += sp->config.tx_cfg[i].fifo_len;
5479 ering->tx_pending = tx_desc_count;
5480 DBG_PRINT(INFO_DBG, "max txds: %d\n", sp->config.max_txds);
5481 }
5482
5483 /**
5484 * s2io_ethtool_getpause_data -Pause frame frame generation and reception.
5485 * @sp : private member of the device structure, which is a pointer to the
5486 * s2io_nic structure.
5487 * @ep : pointer to the structure with pause parameters given by ethtool.
5488 * Description:
5489 * Returns the Pause frame generation and reception capability of the NIC.
5490 * Return value:
5491 * void
5492 */
5493 static void s2io_ethtool_getpause_data(struct net_device *dev,
5494 struct ethtool_pauseparam *ep)
5495 {
5496 u64 val64;
5497 struct s2io_nic *sp = netdev_priv(dev);
5498 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5499
5500 val64 = readq(&bar0->rmac_pause_cfg);
5501 if (val64 & RMAC_PAUSE_GEN_ENABLE)
5502 ep->tx_pause = true;
5503 if (val64 & RMAC_PAUSE_RX_ENABLE)
5504 ep->rx_pause = true;
5505 ep->autoneg = false;
5506 }
5507
5508 /**
5509 * s2io_ethtool_setpause_data - set/reset pause frame generation.
5510 * @sp : private member of the device structure, which is a pointer to the
5511 * s2io_nic structure.
5512 * @ep : pointer to the structure with pause parameters given by ethtool.
5513 * Description:
5514 * It can be used to set or reset Pause frame generation or reception
5515 * support of the NIC.
5516 * Return value:
5517 * int, returns 0 on Success
5518 */
5519
5520 static int s2io_ethtool_setpause_data(struct net_device *dev,
5521 struct ethtool_pauseparam *ep)
5522 {
5523 u64 val64;
5524 struct s2io_nic *sp = netdev_priv(dev);
5525 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5526
5527 val64 = readq(&bar0->rmac_pause_cfg);
5528 if (ep->tx_pause)
5529 val64 |= RMAC_PAUSE_GEN_ENABLE;
5530 else
5531 val64 &= ~RMAC_PAUSE_GEN_ENABLE;
5532 if (ep->rx_pause)
5533 val64 |= RMAC_PAUSE_RX_ENABLE;
5534 else
5535 val64 &= ~RMAC_PAUSE_RX_ENABLE;
5536 writeq(val64, &bar0->rmac_pause_cfg);
5537 return 0;
5538 }
5539
5540 /**
5541 * read_eeprom - reads 4 bytes of data from user given offset.
5542 * @sp : private member of the device structure, which is a pointer to the
5543 * s2io_nic structure.
5544 * @off : offset at which the data must be written
5545 * @data : Its an output parameter where the data read at the given
5546 * offset is stored.
5547 * Description:
5548 * Will read 4 bytes of data from the user given offset and return the
5549 * read data.
5550 * NOTE: Will allow to read only part of the EEPROM visible through the
5551 * I2C bus.
5552 * Return value:
5553 * -1 on failure and 0 on success.
5554 */
5555
5556 #define S2IO_DEV_ID 5
5557 static int read_eeprom(struct s2io_nic *sp, int off, u64 *data)
5558 {
5559 int ret = -1;
5560 u32 exit_cnt = 0;
5561 u64 val64;
5562 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5563
5564 if (sp->device_type == XFRAME_I_DEVICE) {
5565 val64 = I2C_CONTROL_DEV_ID(S2IO_DEV_ID) |
5566 I2C_CONTROL_ADDR(off) |
5567 I2C_CONTROL_BYTE_CNT(0x3) |
5568 I2C_CONTROL_READ |
5569 I2C_CONTROL_CNTL_START;
5570 SPECIAL_REG_WRITE(val64, &bar0->i2c_control, LF);
5571
5572 while (exit_cnt < 5) {
5573 val64 = readq(&bar0->i2c_control);
5574 if (I2C_CONTROL_CNTL_END(val64)) {
5575 *data = I2C_CONTROL_GET_DATA(val64);
5576 ret = 0;
5577 break;
5578 }
5579 msleep(50);
5580 exit_cnt++;
5581 }
5582 }
5583
5584 if (sp->device_type == XFRAME_II_DEVICE) {
5585 val64 = SPI_CONTROL_KEY(0x9) | SPI_CONTROL_SEL1 |
5586 SPI_CONTROL_BYTECNT(0x3) |
5587 SPI_CONTROL_CMD(0x3) | SPI_CONTROL_ADDR(off);
5588 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5589 val64 |= SPI_CONTROL_REQ;
5590 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5591 while (exit_cnt < 5) {
5592 val64 = readq(&bar0->spi_control);
5593 if (val64 & SPI_CONTROL_NACK) {
5594 ret = 1;
5595 break;
5596 } else if (val64 & SPI_CONTROL_DONE) {
5597 *data = readq(&bar0->spi_data);
5598 *data &= 0xffffff;
5599 ret = 0;
5600 break;
5601 }
5602 msleep(50);
5603 exit_cnt++;
5604 }
5605 }
5606 return ret;
5607 }
5608
5609 /**
5610 * write_eeprom - actually writes the relevant part of the data value.
5611 * @sp : private member of the device structure, which is a pointer to the
5612 * s2io_nic structure.
5613 * @off : offset at which the data must be written
5614 * @data : The data that is to be written
5615 * @cnt : Number of bytes of the data that are actually to be written into
5616 * the Eeprom. (max of 3)
5617 * Description:
5618 * Actually writes the relevant part of the data value into the Eeprom
5619 * through the I2C bus.
5620 * Return value:
5621 * 0 on success, -1 on failure.
5622 */
5623
5624 static int write_eeprom(struct s2io_nic *sp, int off, u64 data, int cnt)
5625 {
5626 int exit_cnt = 0, ret = -1;
5627 u64 val64;
5628 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5629
5630 if (sp->device_type == XFRAME_I_DEVICE) {
5631 val64 = I2C_CONTROL_DEV_ID(S2IO_DEV_ID) |
5632 I2C_CONTROL_ADDR(off) |
5633 I2C_CONTROL_BYTE_CNT(cnt) |
5634 I2C_CONTROL_SET_DATA((u32)data) |
5635 I2C_CONTROL_CNTL_START;
5636 SPECIAL_REG_WRITE(val64, &bar0->i2c_control, LF);
5637
5638 while (exit_cnt < 5) {
5639 val64 = readq(&bar0->i2c_control);
5640 if (I2C_CONTROL_CNTL_END(val64)) {
5641 if (!(val64 & I2C_CONTROL_NACK))
5642 ret = 0;
5643 break;
5644 }
5645 msleep(50);
5646 exit_cnt++;
5647 }
5648 }
5649
5650 if (sp->device_type == XFRAME_II_DEVICE) {
5651 int write_cnt = (cnt == 8) ? 0 : cnt;
5652 writeq(SPI_DATA_WRITE(data, (cnt << 3)), &bar0->spi_data);
5653
5654 val64 = SPI_CONTROL_KEY(0x9) | SPI_CONTROL_SEL1 |
5655 SPI_CONTROL_BYTECNT(write_cnt) |
5656 SPI_CONTROL_CMD(0x2) | SPI_CONTROL_ADDR(off);
5657 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5658 val64 |= SPI_CONTROL_REQ;
5659 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5660 while (exit_cnt < 5) {
5661 val64 = readq(&bar0->spi_control);
5662 if (val64 & SPI_CONTROL_NACK) {
5663 ret = 1;
5664 break;
5665 } else if (val64 & SPI_CONTROL_DONE) {
5666 ret = 0;
5667 break;
5668 }
5669 msleep(50);
5670 exit_cnt++;
5671 }
5672 }
5673 return ret;
5674 }
5675 static void s2io_vpd_read(struct s2io_nic *nic)
5676 {
5677 u8 *vpd_data;
5678 u8 data;
5679 int i = 0, cnt, len, fail = 0;
5680 int vpd_addr = 0x80;
5681 struct swStat *swstats = &nic->mac_control.stats_info->sw_stat;
5682
5683 if (nic->device_type == XFRAME_II_DEVICE) {
5684 strcpy(nic->product_name, "Xframe II 10GbE network adapter");
5685 vpd_addr = 0x80;
5686 } else {
5687 strcpy(nic->product_name, "Xframe I 10GbE network adapter");
5688 vpd_addr = 0x50;
5689 }
5690 strcpy(nic->serial_num, "NOT AVAILABLE");
5691
5692 vpd_data = kmalloc(256, GFP_KERNEL);
5693 if (!vpd_data) {
5694 swstats->mem_alloc_fail_cnt++;
5695 return;
5696 }
5697 swstats->mem_allocated += 256;
5698
5699 for (i = 0; i < 256; i += 4) {
5700 pci_write_config_byte(nic->pdev, (vpd_addr + 2), i);
5701 pci_read_config_byte(nic->pdev, (vpd_addr + 2), &data);
5702 pci_write_config_byte(nic->pdev, (vpd_addr + 3), 0);
5703 for (cnt = 0; cnt < 5; cnt++) {
5704 msleep(2);
5705 pci_read_config_byte(nic->pdev, (vpd_addr + 3), &data);
5706 if (data == 0x80)
5707 break;
5708 }
5709 if (cnt >= 5) {
5710 DBG_PRINT(ERR_DBG, "Read of VPD data failed\n");
5711 fail = 1;
5712 break;
5713 }
5714 pci_read_config_dword(nic->pdev, (vpd_addr + 4),
5715 (u32 *)&vpd_data[i]);
5716 }
5717
5718 if (!fail) {
5719 /* read serial number of adapter */
5720 for (cnt = 0; cnt < 252; cnt++) {
5721 if ((vpd_data[cnt] == 'S') &&
5722 (vpd_data[cnt+1] == 'N')) {
5723 len = vpd_data[cnt+2];
5724 if (len < min(VPD_STRING_LEN, 256-cnt-2)) {
5725 memcpy(nic->serial_num,
5726 &vpd_data[cnt + 3],
5727 len);
5728 memset(nic->serial_num+len,
5729 0,
5730 VPD_STRING_LEN-len);
5731 break;
5732 }
5733 }
5734 }
5735 }
5736
5737 if ((!fail) && (vpd_data[1] < VPD_STRING_LEN)) {
5738 len = vpd_data[1];
5739 memcpy(nic->product_name, &vpd_data[3], len);
5740 nic->product_name[len] = 0;
5741 }
5742 kfree(vpd_data);
5743 swstats->mem_freed += 256;
5744 }
5745
5746 /**
5747 * s2io_ethtool_geeprom - reads the value stored in the Eeprom.
5748 * @sp : private member of the device structure, which is a pointer to the
5749 * s2io_nic structure.
5750 * @eeprom : pointer to the user level structure provided by ethtool,
5751 * containing all relevant information.
5752 * @data_buf : user defined value to be written into Eeprom.
5753 * Description: Reads the values stored in the Eeprom at given offset
5754 * for a given length. Stores these values int the input argument data
5755 * buffer 'data_buf' and returns these to the caller (ethtool.)
5756 * Return value:
5757 * int 0 on success
5758 */
5759
5760 static int s2io_ethtool_geeprom(struct net_device *dev,
5761 struct ethtool_eeprom *eeprom, u8 * data_buf)
5762 {
5763 u32 i, valid;
5764 u64 data;
5765 struct s2io_nic *sp = netdev_priv(dev);
5766
5767 eeprom->magic = sp->pdev->vendor | (sp->pdev->device << 16);
5768
5769 if ((eeprom->offset + eeprom->len) > (XENA_EEPROM_SPACE))
5770 eeprom->len = XENA_EEPROM_SPACE - eeprom->offset;
5771
5772 for (i = 0; i < eeprom->len; i += 4) {
5773 if (read_eeprom(sp, (eeprom->offset + i), &data)) {
5774 DBG_PRINT(ERR_DBG, "Read of EEPROM failed\n");
5775 return -EFAULT;
5776 }
5777 valid = INV(data);
5778 memcpy((data_buf + i), &valid, 4);
5779 }
5780 return 0;
5781 }
5782
5783 /**
5784 * s2io_ethtool_seeprom - tries to write the user provided value in Eeprom
5785 * @sp : private member of the device structure, which is a pointer to the
5786 * s2io_nic structure.
5787 * @eeprom : pointer to the user level structure provided by ethtool,
5788 * containing all relevant information.
5789 * @data_buf ; user defined value to be written into Eeprom.
5790 * Description:
5791 * Tries to write the user provided value in the Eeprom, at the offset
5792 * given by the user.
5793 * Return value:
5794 * 0 on success, -EFAULT on failure.
5795 */
5796
5797 static int s2io_ethtool_seeprom(struct net_device *dev,
5798 struct ethtool_eeprom *eeprom,
5799 u8 *data_buf)
5800 {
5801 int len = eeprom->len, cnt = 0;
5802 u64 valid = 0, data;
5803 struct s2io_nic *sp = netdev_priv(dev);
5804
5805 if (eeprom->magic != (sp->pdev->vendor | (sp->pdev->device << 16))) {
5806 DBG_PRINT(ERR_DBG,
5807 "ETHTOOL_WRITE_EEPROM Err: "
5808 "Magic value is wrong, it is 0x%x should be 0x%x\n",
5809 (sp->pdev->vendor | (sp->pdev->device << 16)),
5810 eeprom->magic);
5811 return -EFAULT;
5812 }
5813
5814 while (len) {
5815 data = (u32)data_buf[cnt] & 0x000000FF;
5816 if (data)
5817 valid = (u32)(data << 24);
5818 else
5819 valid = data;
5820
5821 if (write_eeprom(sp, (eeprom->offset + cnt), valid, 0)) {
5822 DBG_PRINT(ERR_DBG,
5823 "ETHTOOL_WRITE_EEPROM Err: "
5824 "Cannot write into the specified offset\n");
5825 return -EFAULT;
5826 }
5827 cnt++;
5828 len--;
5829 }
5830
5831 return 0;
5832 }
5833
5834 /**
5835 * s2io_register_test - reads and writes into all clock domains.
5836 * @sp : private member of the device structure, which is a pointer to the
5837 * s2io_nic structure.
5838 * @data : variable that returns the result of each of the test conducted b
5839 * by the driver.
5840 * Description:
5841 * Read and write into all clock domains. The NIC has 3 clock domains,
5842 * see that registers in all the three regions are accessible.
5843 * Return value:
5844 * 0 on success.
5845 */
5846
5847 static int s2io_register_test(struct s2io_nic *sp, uint64_t *data)
5848 {
5849 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5850 u64 val64 = 0, exp_val;
5851 int fail = 0;
5852
5853 val64 = readq(&bar0->pif_rd_swapper_fb);
5854 if (val64 != 0x123456789abcdefULL) {
5855 fail = 1;
5856 DBG_PRINT(INFO_DBG, "Read Test level %d fails\n", 1);
5857 }
5858
5859 val64 = readq(&bar0->rmac_pause_cfg);
5860 if (val64 != 0xc000ffff00000000ULL) {
5861 fail = 1;
5862 DBG_PRINT(INFO_DBG, "Read Test level %d fails\n", 2);
5863 }
5864
5865 val64 = readq(&bar0->rx_queue_cfg);
5866 if (sp->device_type == XFRAME_II_DEVICE)
5867 exp_val = 0x0404040404040404ULL;
5868 else
5869 exp_val = 0x0808080808080808ULL;
5870 if (val64 != exp_val) {
5871 fail = 1;
5872 DBG_PRINT(INFO_DBG, "Read Test level %d fails\n", 3);
5873 }
5874
5875 val64 = readq(&bar0->xgxs_efifo_cfg);
5876 if (val64 != 0x000000001923141EULL) {
5877 fail = 1;
5878 DBG_PRINT(INFO_DBG, "Read Test level %d fails\n", 4);
5879 }
5880
5881 val64 = 0x5A5A5A5A5A5A5A5AULL;
5882 writeq(val64, &bar0->xmsi_data);
5883 val64 = readq(&bar0->xmsi_data);
5884 if (val64 != 0x5A5A5A5A5A5A5A5AULL) {
5885 fail = 1;
5886 DBG_PRINT(ERR_DBG, "Write Test level %d fails\n", 1);
5887 }
5888
5889 val64 = 0xA5A5A5A5A5A5A5A5ULL;
5890 writeq(val64, &bar0->xmsi_data);
5891 val64 = readq(&bar0->xmsi_data);
5892 if (val64 != 0xA5A5A5A5A5A5A5A5ULL) {
5893 fail = 1;
5894 DBG_PRINT(ERR_DBG, "Write Test level %d fails\n", 2);
5895 }
5896
5897 *data = fail;
5898 return fail;
5899 }
5900
5901 /**
5902 * s2io_eeprom_test - to verify that EEprom in the xena can be programmed.
5903 * @sp : private member of the device structure, which is a pointer to the
5904 * s2io_nic structure.
5905 * @data:variable that returns the result of each of the test conducted by
5906 * the driver.
5907 * Description:
5908 * Verify that EEPROM in the xena can be programmed using I2C_CONTROL
5909 * register.
5910 * Return value:
5911 * 0 on success.
5912 */
5913
5914 static int s2io_eeprom_test(struct s2io_nic *sp, uint64_t *data)
5915 {
5916 int fail = 0;
5917 u64 ret_data, org_4F0, org_7F0;
5918 u8 saved_4F0 = 0, saved_7F0 = 0;
5919 struct net_device *dev = sp->dev;
5920
5921 /* Test Write Error at offset 0 */
5922 /* Note that SPI interface allows write access to all areas
5923 * of EEPROM. Hence doing all negative testing only for Xframe I.
5924 */
5925 if (sp->device_type == XFRAME_I_DEVICE)
5926 if (!write_eeprom(sp, 0, 0, 3))
5927 fail = 1;
5928
5929 /* Save current values at offsets 0x4F0 and 0x7F0 */
5930 if (!read_eeprom(sp, 0x4F0, &org_4F0))
5931 saved_4F0 = 1;
5932 if (!read_eeprom(sp, 0x7F0, &org_7F0))
5933 saved_7F0 = 1;
5934
5935 /* Test Write at offset 4f0 */
5936 if (write_eeprom(sp, 0x4F0, 0x012345, 3))
5937 fail = 1;
5938 if (read_eeprom(sp, 0x4F0, &ret_data))
5939 fail = 1;
5940
5941 if (ret_data != 0x012345) {
5942 DBG_PRINT(ERR_DBG, "%s: eeprom test error at offset 0x4F0. "
5943 "Data written %llx Data read %llx\n",
5944 dev->name, (unsigned long long)0x12345,
5945 (unsigned long long)ret_data);
5946 fail = 1;
5947 }
5948
5949 /* Reset the EEPROM data go FFFF */
5950 write_eeprom(sp, 0x4F0, 0xFFFFFF, 3);
5951
5952 /* Test Write Request Error at offset 0x7c */
5953 if (sp->device_type == XFRAME_I_DEVICE)
5954 if (!write_eeprom(sp, 0x07C, 0, 3))
5955 fail = 1;
5956
5957 /* Test Write Request at offset 0x7f0 */
5958 if (write_eeprom(sp, 0x7F0, 0x012345, 3))
5959 fail = 1;
5960 if (read_eeprom(sp, 0x7F0, &ret_data))
5961 fail = 1;
5962
5963 if (ret_data != 0x012345) {
5964 DBG_PRINT(ERR_DBG, "%s: eeprom test error at offset 0x7F0. "
5965 "Data written %llx Data read %llx\n",
5966 dev->name, (unsigned long long)0x12345,
5967 (unsigned long long)ret_data);
5968 fail = 1;
5969 }
5970
5971 /* Reset the EEPROM data go FFFF */
5972 write_eeprom(sp, 0x7F0, 0xFFFFFF, 3);
5973
5974 if (sp->device_type == XFRAME_I_DEVICE) {
5975 /* Test Write Error at offset 0x80 */
5976 if (!write_eeprom(sp, 0x080, 0, 3))
5977 fail = 1;
5978
5979 /* Test Write Error at offset 0xfc */
5980 if (!write_eeprom(sp, 0x0FC, 0, 3))
5981 fail = 1;
5982
5983 /* Test Write Error at offset 0x100 */
5984 if (!write_eeprom(sp, 0x100, 0, 3))
5985 fail = 1;
5986
5987 /* Test Write Error at offset 4ec */
5988 if (!write_eeprom(sp, 0x4EC, 0, 3))
5989 fail = 1;
5990 }
5991
5992 /* Restore values at offsets 0x4F0 and 0x7F0 */
5993 if (saved_4F0)
5994 write_eeprom(sp, 0x4F0, org_4F0, 3);
5995 if (saved_7F0)
5996 write_eeprom(sp, 0x7F0, org_7F0, 3);
5997
5998 *data = fail;
5999 return fail;
6000 }
6001
6002 /**
6003 * s2io_bist_test - invokes the MemBist test of the card .
6004 * @sp : private member of the device structure, which is a pointer to the
6005 * s2io_nic structure.
6006 * @data:variable that returns the result of each of the test conducted by
6007 * the driver.
6008 * Description:
6009 * This invokes the MemBist test of the card. We give around
6010 * 2 secs time for the Test to complete. If it's still not complete
6011 * within this peiod, we consider that the test failed.
6012 * Return value:
6013 * 0 on success and -1 on failure.
6014 */
6015
6016 static int s2io_bist_test(struct s2io_nic *sp, uint64_t *data)
6017 {
6018 u8 bist = 0;
6019 int cnt = 0, ret = -1;
6020
6021 pci_read_config_byte(sp->pdev, PCI_BIST, &bist);
6022 bist |= PCI_BIST_START;
6023 pci_write_config_word(sp->pdev, PCI_BIST, bist);
6024
6025 while (cnt < 20) {
6026 pci_read_config_byte(sp->pdev, PCI_BIST, &bist);
6027 if (!(bist & PCI_BIST_START)) {
6028 *data = (bist & PCI_BIST_CODE_MASK);
6029 ret = 0;
6030 break;
6031 }
6032 msleep(100);
6033 cnt++;
6034 }
6035
6036 return ret;
6037 }
6038
6039 /**
6040 * s2io_link_test - verifies the link state of the nic
6041 * @sp ; private member of the device structure, which is a pointer to the
6042 * s2io_nic structure.
6043 * @data: variable that returns the result of each of the test conducted by
6044 * the driver.
6045 * Description:
6046 * The function verifies the link state of the NIC and updates the input
6047 * argument 'data' appropriately.
6048 * Return value:
6049 * 0 on success.
6050 */
6051
6052 static int s2io_link_test(struct s2io_nic *sp, uint64_t *data)
6053 {
6054 struct XENA_dev_config __iomem *bar0 = sp->bar0;
6055 u64 val64;
6056
6057 val64 = readq(&bar0->adapter_status);
6058 if (!(LINK_IS_UP(val64)))
6059 *data = 1;
6060 else
6061 *data = 0;
6062
6063 return *data;
6064 }
6065
6066 /**
6067 * s2io_rldram_test - offline test for access to the RldRam chip on the NIC
6068 * @sp: private member of the device structure, which is a pointer to the
6069 * s2io_nic structure.
6070 * @data: variable that returns the result of each of the test
6071 * conducted by the driver.
6072 * Description:
6073 * This is one of the offline test that tests the read and write
6074 * access to the RldRam chip on the NIC.
6075 * Return value:
6076 * 0 on success.
6077 */
6078
6079 static int s2io_rldram_test(struct s2io_nic *sp, uint64_t *data)
6080 {
6081 struct XENA_dev_config __iomem *bar0 = sp->bar0;
6082 u64 val64;
6083 int cnt, iteration = 0, test_fail = 0;
6084
6085 val64 = readq(&bar0->adapter_control);
6086 val64 &= ~ADAPTER_ECC_EN;
6087 writeq(val64, &bar0->adapter_control);
6088
6089 val64 = readq(&bar0->mc_rldram_test_ctrl);
6090 val64 |= MC_RLDRAM_TEST_MODE;
6091 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_test_ctrl, LF);
6092
6093 val64 = readq(&bar0->mc_rldram_mrs);
6094 val64 |= MC_RLDRAM_QUEUE_SIZE_ENABLE;
6095 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF);
6096
6097 val64 |= MC_RLDRAM_MRS_ENABLE;
6098 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF);
6099
6100 while (iteration < 2) {
6101 val64 = 0x55555555aaaa0000ULL;
6102 if (iteration == 1)
6103 val64 ^= 0xFFFFFFFFFFFF0000ULL;
6104 writeq(val64, &bar0->mc_rldram_test_d0);
6105
6106 val64 = 0xaaaa5a5555550000ULL;
6107 if (iteration == 1)
6108 val64 ^= 0xFFFFFFFFFFFF0000ULL;
6109 writeq(val64, &bar0->mc_rldram_test_d1);
6110
6111 val64 = 0x55aaaaaaaa5a0000ULL;
6112 if (iteration == 1)
6113 val64 ^= 0xFFFFFFFFFFFF0000ULL;
6114 writeq(val64, &bar0->mc_rldram_test_d2);
6115
6116 val64 = (u64) (0x0000003ffffe0100ULL);
6117 writeq(val64, &bar0->mc_rldram_test_add);
6118
6119 val64 = MC_RLDRAM_TEST_MODE |
6120 MC_RLDRAM_TEST_WRITE |
6121 MC_RLDRAM_TEST_GO;
6122 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_test_ctrl, LF);
6123
6124 for (cnt = 0; cnt < 5; cnt++) {
6125 val64 = readq(&bar0->mc_rldram_test_ctrl);
6126 if (val64 & MC_RLDRAM_TEST_DONE)
6127 break;
6128 msleep(200);
6129 }
6130
6131 if (cnt == 5)
6132 break;
6133
6134 val64 = MC_RLDRAM_TEST_MODE | MC_RLDRAM_TEST_GO;
6135 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_test_ctrl, LF);
6136
6137 for (cnt = 0; cnt < 5; cnt++) {
6138 val64 = readq(&bar0->mc_rldram_test_ctrl);
6139 if (val64 & MC_RLDRAM_TEST_DONE)
6140 break;
6141 msleep(500);
6142 }
6143
6144 if (cnt == 5)
6145 break;
6146
6147 val64 = readq(&bar0->mc_rldram_test_ctrl);
6148 if (!(val64 & MC_RLDRAM_TEST_PASS))
6149 test_fail = 1;
6150
6151 iteration++;
6152 }
6153
6154 *data = test_fail;
6155
6156 /* Bring the adapter out of test mode */
6157 SPECIAL_REG_WRITE(0, &bar0->mc_rldram_test_ctrl, LF);
6158
6159 return test_fail;
6160 }
6161
6162 /**
6163 * s2io_ethtool_test - conducts 6 tsets to determine the health of card.
6164 * @sp : private member of the device structure, which is a pointer to the
6165 * s2io_nic structure.
6166 * @ethtest : pointer to a ethtool command specific structure that will be
6167 * returned to the user.
6168 * @data : variable that returns the result of each of the test
6169 * conducted by the driver.
6170 * Description:
6171 * This function conducts 6 tests ( 4 offline and 2 online) to determine
6172 * the health of the card.
6173 * Return value:
6174 * void
6175 */
6176
6177 static void s2io_ethtool_test(struct net_device *dev,
6178 struct ethtool_test *ethtest,
6179 uint64_t *data)
6180 {
6181 struct s2io_nic *sp = netdev_priv(dev);
6182 int orig_state = netif_running(sp->dev);
6183
6184 if (ethtest->flags == ETH_TEST_FL_OFFLINE) {
6185 /* Offline Tests. */
6186 if (orig_state)
6187 s2io_close(sp->dev);
6188
6189 if (s2io_register_test(sp, &data[0]))
6190 ethtest->flags |= ETH_TEST_FL_FAILED;
6191
6192 s2io_reset(sp);
6193
6194 if (s2io_rldram_test(sp, &data[3]))
6195 ethtest->flags |= ETH_TEST_FL_FAILED;
6196
6197 s2io_reset(sp);
6198
6199 if (s2io_eeprom_test(sp, &data[1]))
6200 ethtest->flags |= ETH_TEST_FL_FAILED;
6201
6202 if (s2io_bist_test(sp, &data[4]))
6203 ethtest->flags |= ETH_TEST_FL_FAILED;
6204
6205 if (orig_state)
6206 s2io_open(sp->dev);
6207
6208 data[2] = 0;
6209 } else {
6210 /* Online Tests. */
6211 if (!orig_state) {
6212 DBG_PRINT(ERR_DBG, "%s: is not up, cannot run test\n",
6213 dev->name);
6214 data[0] = -1;
6215 data[1] = -1;
6216 data[2] = -1;
6217 data[3] = -1;
6218 data[4] = -1;
6219 }
6220
6221 if (s2io_link_test(sp, &data[2]))
6222 ethtest->flags |= ETH_TEST_FL_FAILED;
6223
6224 data[0] = 0;
6225 data[1] = 0;
6226 data[3] = 0;
6227 data[4] = 0;
6228 }
6229 }
6230
6231 static void s2io_get_ethtool_stats(struct net_device *dev,
6232 struct ethtool_stats *estats,
6233 u64 *tmp_stats)
6234 {
6235 int i = 0, k;
6236 struct s2io_nic *sp = netdev_priv(dev);
6237 struct stat_block *stats = sp->mac_control.stats_info;
6238 struct swStat *swstats = &stats->sw_stat;
6239 struct xpakStat *xstats = &stats->xpak_stat;
6240
6241 s2io_updt_stats(sp);
6242 tmp_stats[i++] =
6243 (u64)le32_to_cpu(stats->tmac_frms_oflow) << 32 |
6244 le32_to_cpu(stats->tmac_frms);
6245 tmp_stats[i++] =
6246 (u64)le32_to_cpu(stats->tmac_data_octets_oflow) << 32 |
6247 le32_to_cpu(stats->tmac_data_octets);
6248 tmp_stats[i++] = le64_to_cpu(stats->tmac_drop_frms);
6249 tmp_stats[i++] =
6250 (u64)le32_to_cpu(stats->tmac_mcst_frms_oflow) << 32 |
6251 le32_to_cpu(stats->tmac_mcst_frms);
6252 tmp_stats[i++] =
6253 (u64)le32_to_cpu(stats->tmac_bcst_frms_oflow) << 32 |
6254 le32_to_cpu(stats->tmac_bcst_frms);
6255 tmp_stats[i++] = le64_to_cpu(stats->tmac_pause_ctrl_frms);
6256 tmp_stats[i++] =
6257 (u64)le32_to_cpu(stats->tmac_ttl_octets_oflow) << 32 |
6258 le32_to_cpu(stats->tmac_ttl_octets);
6259 tmp_stats[i++] =
6260 (u64)le32_to_cpu(stats->tmac_ucst_frms_oflow) << 32 |
6261 le32_to_cpu(stats->tmac_ucst_frms);
6262 tmp_stats[i++] =
6263 (u64)le32_to_cpu(stats->tmac_nucst_frms_oflow) << 32 |
6264 le32_to_cpu(stats->tmac_nucst_frms);
6265 tmp_stats[i++] =
6266 (u64)le32_to_cpu(stats->tmac_any_err_frms_oflow) << 32 |
6267 le32_to_cpu(stats->tmac_any_err_frms);
6268 tmp_stats[i++] = le64_to_cpu(stats->tmac_ttl_less_fb_octets);
6269 tmp_stats[i++] = le64_to_cpu(stats->tmac_vld_ip_octets);
6270 tmp_stats[i++] =
6271 (u64)le32_to_cpu(stats->tmac_vld_ip_oflow) << 32 |
6272 le32_to_cpu(stats->tmac_vld_ip);
6273 tmp_stats[i++] =
6274 (u64)le32_to_cpu(stats->tmac_drop_ip_oflow) << 32 |
6275 le32_to_cpu(stats->tmac_drop_ip);
6276 tmp_stats[i++] =
6277 (u64)le32_to_cpu(stats->tmac_icmp_oflow) << 32 |
6278 le32_to_cpu(stats->tmac_icmp);
6279 tmp_stats[i++] =
6280 (u64)le32_to_cpu(stats->tmac_rst_tcp_oflow) << 32 |
6281 le32_to_cpu(stats->tmac_rst_tcp);
6282 tmp_stats[i++] = le64_to_cpu(stats->tmac_tcp);
6283 tmp_stats[i++] = (u64)le32_to_cpu(stats->tmac_udp_oflow) << 32 |
6284 le32_to_cpu(stats->tmac_udp);
6285 tmp_stats[i++] =
6286 (u64)le32_to_cpu(stats->rmac_vld_frms_oflow) << 32 |
6287 le32_to_cpu(stats->rmac_vld_frms);
6288 tmp_stats[i++] =
6289 (u64)le32_to_cpu(stats->rmac_data_octets_oflow) << 32 |
6290 le32_to_cpu(stats->rmac_data_octets);
6291 tmp_stats[i++] = le64_to_cpu(stats->rmac_fcs_err_frms);
6292 tmp_stats[i++] = le64_to_cpu(stats->rmac_drop_frms);
6293 tmp_stats[i++] =
6294 (u64)le32_to_cpu(stats->rmac_vld_mcst_frms_oflow) << 32 |
6295 le32_to_cpu(stats->rmac_vld_mcst_frms);
6296 tmp_stats[i++] =
6297 (u64)le32_to_cpu(stats->rmac_vld_bcst_frms_oflow) << 32 |
6298 le32_to_cpu(stats->rmac_vld_bcst_frms);
6299 tmp_stats[i++] = le32_to_cpu(stats->rmac_in_rng_len_err_frms);
6300 tmp_stats[i++] = le32_to_cpu(stats->rmac_out_rng_len_err_frms);
6301 tmp_stats[i++] = le64_to_cpu(stats->rmac_long_frms);
6302 tmp_stats[i++] = le64_to_cpu(stats->rmac_pause_ctrl_frms);
6303 tmp_stats[i++] = le64_to_cpu(stats->rmac_unsup_ctrl_frms);
6304 tmp_stats[i++] =
6305 (u64)le32_to_cpu(stats->rmac_ttl_octets_oflow) << 32 |
6306 le32_to_cpu(stats->rmac_ttl_octets);
6307 tmp_stats[i++] =
6308 (u64)le32_to_cpu(stats->rmac_accepted_ucst_frms_oflow) << 32
6309 | le32_to_cpu(stats->rmac_accepted_ucst_frms);
6310 tmp_stats[i++] =
6311 (u64)le32_to_cpu(stats->rmac_accepted_nucst_frms_oflow)
6312 << 32 | le32_to_cpu(stats->rmac_accepted_nucst_frms);
6313 tmp_stats[i++] =
6314 (u64)le32_to_cpu(stats->rmac_discarded_frms_oflow) << 32 |
6315 le32_to_cpu(stats->rmac_discarded_frms);
6316 tmp_stats[i++] =
6317 (u64)le32_to_cpu(stats->rmac_drop_events_oflow)
6318 << 32 | le32_to_cpu(stats->rmac_drop_events);
6319 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_less_fb_octets);
6320 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_frms);
6321 tmp_stats[i++] =
6322 (u64)le32_to_cpu(stats->rmac_usized_frms_oflow) << 32 |
6323 le32_to_cpu(stats->rmac_usized_frms);
6324 tmp_stats[i++] =
6325 (u64)le32_to_cpu(stats->rmac_osized_frms_oflow) << 32 |
6326 le32_to_cpu(stats->rmac_osized_frms);
6327 tmp_stats[i++] =
6328 (u64)le32_to_cpu(stats->rmac_frag_frms_oflow) << 32 |
6329 le32_to_cpu(stats->rmac_frag_frms);
6330 tmp_stats[i++] =
6331 (u64)le32_to_cpu(stats->rmac_jabber_frms_oflow) << 32 |
6332 le32_to_cpu(stats->rmac_jabber_frms);
6333 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_64_frms);
6334 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_65_127_frms);
6335 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_128_255_frms);
6336 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_256_511_frms);
6337 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_512_1023_frms);
6338 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_1024_1518_frms);
6339 tmp_stats[i++] =
6340 (u64)le32_to_cpu(stats->rmac_ip_oflow) << 32 |
6341 le32_to_cpu(stats->rmac_ip);
6342 tmp_stats[i++] = le64_to_cpu(stats->rmac_ip_octets);
6343 tmp_stats[i++] = le32_to_cpu(stats->rmac_hdr_err_ip);
6344 tmp_stats[i++] =
6345 (u64)le32_to_cpu(stats->rmac_drop_ip_oflow) << 32 |
6346 le32_to_cpu(stats->rmac_drop_ip);
6347 tmp_stats[i++] =
6348 (u64)le32_to_cpu(stats->rmac_icmp_oflow) << 32 |
6349 le32_to_cpu(stats->rmac_icmp);
6350 tmp_stats[i++] = le64_to_cpu(stats->rmac_tcp);
6351 tmp_stats[i++] =
6352 (u64)le32_to_cpu(stats->rmac_udp_oflow) << 32 |
6353 le32_to_cpu(stats->rmac_udp);
6354 tmp_stats[i++] =
6355 (u64)le32_to_cpu(stats->rmac_err_drp_udp_oflow) << 32 |
6356 le32_to_cpu(stats->rmac_err_drp_udp);
6357 tmp_stats[i++] = le64_to_cpu(stats->rmac_xgmii_err_sym);
6358 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q0);
6359 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q1);
6360 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q2);
6361 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q3);
6362 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q4);
6363 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q5);
6364 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q6);
6365 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q7);
6366 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q0);
6367 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q1);
6368 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q2);
6369 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q3);
6370 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q4);
6371 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q5);
6372 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q6);
6373 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q7);
6374 tmp_stats[i++] =
6375 (u64)le32_to_cpu(stats->rmac_pause_cnt_oflow) << 32 |
6376 le32_to_cpu(stats->rmac_pause_cnt);
6377 tmp_stats[i++] = le64_to_cpu(stats->rmac_xgmii_data_err_cnt);
6378 tmp_stats[i++] = le64_to_cpu(stats->rmac_xgmii_ctrl_err_cnt);
6379 tmp_stats[i++] =
6380 (u64)le32_to_cpu(stats->rmac_accepted_ip_oflow) << 32 |
6381 le32_to_cpu(stats->rmac_accepted_ip);
6382 tmp_stats[i++] = le32_to_cpu(stats->rmac_err_tcp);
6383 tmp_stats[i++] = le32_to_cpu(stats->rd_req_cnt);
6384 tmp_stats[i++] = le32_to_cpu(stats->new_rd_req_cnt);
6385 tmp_stats[i++] = le32_to_cpu(stats->new_rd_req_rtry_cnt);
6386 tmp_stats[i++] = le32_to_cpu(stats->rd_rtry_cnt);
6387 tmp_stats[i++] = le32_to_cpu(stats->wr_rtry_rd_ack_cnt);
6388 tmp_stats[i++] = le32_to_cpu(stats->wr_req_cnt);
6389 tmp_stats[i++] = le32_to_cpu(stats->new_wr_req_cnt);
6390 tmp_stats[i++] = le32_to_cpu(stats->new_wr_req_rtry_cnt);
6391 tmp_stats[i++] = le32_to_cpu(stats->wr_rtry_cnt);
6392 tmp_stats[i++] = le32_to_cpu(stats->wr_disc_cnt);
6393 tmp_stats[i++] = le32_to_cpu(stats->rd_rtry_wr_ack_cnt);
6394 tmp_stats[i++] = le32_to_cpu(stats->txp_wr_cnt);
6395 tmp_stats[i++] = le32_to_cpu(stats->txd_rd_cnt);
6396 tmp_stats[i++] = le32_to_cpu(stats->txd_wr_cnt);
6397 tmp_stats[i++] = le32_to_cpu(stats->rxd_rd_cnt);
6398 tmp_stats[i++] = le32_to_cpu(stats->rxd_wr_cnt);
6399 tmp_stats[i++] = le32_to_cpu(stats->txf_rd_cnt);
6400 tmp_stats[i++] = le32_to_cpu(stats->rxf_wr_cnt);
6401
6402 /* Enhanced statistics exist only for Hercules */
6403 if (sp->device_type == XFRAME_II_DEVICE) {
6404 tmp_stats[i++] =
6405 le64_to_cpu(stats->rmac_ttl_1519_4095_frms);
6406 tmp_stats[i++] =
6407 le64_to_cpu(stats->rmac_ttl_4096_8191_frms);
6408 tmp_stats[i++] =
6409 le64_to_cpu(stats->rmac_ttl_8192_max_frms);
6410 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_gt_max_frms);
6411 tmp_stats[i++] = le64_to_cpu(stats->rmac_osized_alt_frms);
6412 tmp_stats[i++] = le64_to_cpu(stats->rmac_jabber_alt_frms);
6413 tmp_stats[i++] = le64_to_cpu(stats->rmac_gt_max_alt_frms);
6414 tmp_stats[i++] = le64_to_cpu(stats->rmac_vlan_frms);
6415 tmp_stats[i++] = le32_to_cpu(stats->rmac_len_discard);
6416 tmp_stats[i++] = le32_to_cpu(stats->rmac_fcs_discard);
6417 tmp_stats[i++] = le32_to_cpu(stats->rmac_pf_discard);
6418 tmp_stats[i++] = le32_to_cpu(stats->rmac_da_discard);
6419 tmp_stats[i++] = le32_to_cpu(stats->rmac_red_discard);
6420 tmp_stats[i++] = le32_to_cpu(stats->rmac_rts_discard);
6421 tmp_stats[i++] = le32_to_cpu(stats->rmac_ingm_full_discard);
6422 tmp_stats[i++] = le32_to_cpu(stats->link_fault_cnt);
6423 }
6424
6425 tmp_stats[i++] = 0;
6426 tmp_stats[i++] = swstats->single_ecc_errs;
6427 tmp_stats[i++] = swstats->double_ecc_errs;
6428 tmp_stats[i++] = swstats->parity_err_cnt;
6429 tmp_stats[i++] = swstats->serious_err_cnt;
6430 tmp_stats[i++] = swstats->soft_reset_cnt;
6431 tmp_stats[i++] = swstats->fifo_full_cnt;
6432 for (k = 0; k < MAX_RX_RINGS; k++)
6433 tmp_stats[i++] = swstats->ring_full_cnt[k];
6434 tmp_stats[i++] = xstats->alarm_transceiver_temp_high;
6435 tmp_stats[i++] = xstats->alarm_transceiver_temp_low;
6436 tmp_stats[i++] = xstats->alarm_laser_bias_current_high;
6437 tmp_stats[i++] = xstats->alarm_laser_bias_current_low;
6438 tmp_stats[i++] = xstats->alarm_laser_output_power_high;
6439 tmp_stats[i++] = xstats->alarm_laser_output_power_low;
6440 tmp_stats[i++] = xstats->warn_transceiver_temp_high;
6441 tmp_stats[i++] = xstats->warn_transceiver_temp_low;
6442 tmp_stats[i++] = xstats->warn_laser_bias_current_high;
6443 tmp_stats[i++] = xstats->warn_laser_bias_current_low;
6444 tmp_stats[i++] = xstats->warn_laser_output_power_high;
6445 tmp_stats[i++] = xstats->warn_laser_output_power_low;
6446 tmp_stats[i++] = swstats->clubbed_frms_cnt;
6447 tmp_stats[i++] = swstats->sending_both;
6448 tmp_stats[i++] = swstats->outof_sequence_pkts;
6449 tmp_stats[i++] = swstats->flush_max_pkts;
6450 if (swstats->num_aggregations) {
6451 u64 tmp = swstats->sum_avg_pkts_aggregated;
6452 int count = 0;
6453 /*
6454 * Since 64-bit divide does not work on all platforms,
6455 * do repeated subtraction.
6456 */
6457 while (tmp >= swstats->num_aggregations) {
6458 tmp -= swstats->num_aggregations;
6459 count++;
6460 }
6461 tmp_stats[i++] = count;
6462 } else
6463 tmp_stats[i++] = 0;
6464 tmp_stats[i++] = swstats->mem_alloc_fail_cnt;
6465 tmp_stats[i++] = swstats->pci_map_fail_cnt;
6466 tmp_stats[i++] = swstats->watchdog_timer_cnt;
6467 tmp_stats[i++] = swstats->mem_allocated;
6468 tmp_stats[i++] = swstats->mem_freed;
6469 tmp_stats[i++] = swstats->link_up_cnt;
6470 tmp_stats[i++] = swstats->link_down_cnt;
6471 tmp_stats[i++] = swstats->link_up_time;
6472 tmp_stats[i++] = swstats->link_down_time;
6473
6474 tmp_stats[i++] = swstats->tx_buf_abort_cnt;
6475 tmp_stats[i++] = swstats->tx_desc_abort_cnt;
6476 tmp_stats[i++] = swstats->tx_parity_err_cnt;
6477 tmp_stats[i++] = swstats->tx_link_loss_cnt;
6478 tmp_stats[i++] = swstats->tx_list_proc_err_cnt;
6479
6480 tmp_stats[i++] = swstats->rx_parity_err_cnt;
6481 tmp_stats[i++] = swstats->rx_abort_cnt;
6482 tmp_stats[i++] = swstats->rx_parity_abort_cnt;
6483 tmp_stats[i++] = swstats->rx_rda_fail_cnt;
6484 tmp_stats[i++] = swstats->rx_unkn_prot_cnt;
6485 tmp_stats[i++] = swstats->rx_fcs_err_cnt;
6486 tmp_stats[i++] = swstats->rx_buf_size_err_cnt;
6487 tmp_stats[i++] = swstats->rx_rxd_corrupt_cnt;
6488 tmp_stats[i++] = swstats->rx_unkn_err_cnt;
6489 tmp_stats[i++] = swstats->tda_err_cnt;
6490 tmp_stats[i++] = swstats->pfc_err_cnt;
6491 tmp_stats[i++] = swstats->pcc_err_cnt;
6492 tmp_stats[i++] = swstats->tti_err_cnt;
6493 tmp_stats[i++] = swstats->tpa_err_cnt;
6494 tmp_stats[i++] = swstats->sm_err_cnt;
6495 tmp_stats[i++] = swstats->lso_err_cnt;
6496 tmp_stats[i++] = swstats->mac_tmac_err_cnt;
6497 tmp_stats[i++] = swstats->mac_rmac_err_cnt;
6498 tmp_stats[i++] = swstats->xgxs_txgxs_err_cnt;
6499 tmp_stats[i++] = swstats->xgxs_rxgxs_err_cnt;
6500 tmp_stats[i++] = swstats->rc_err_cnt;
6501 tmp_stats[i++] = swstats->prc_pcix_err_cnt;
6502 tmp_stats[i++] = swstats->rpa_err_cnt;
6503 tmp_stats[i++] = swstats->rda_err_cnt;
6504 tmp_stats[i++] = swstats->rti_err_cnt;
6505 tmp_stats[i++] = swstats->mc_err_cnt;
6506 }
6507
6508 static int s2io_ethtool_get_regs_len(struct net_device *dev)
6509 {
6510 return XENA_REG_SPACE;
6511 }
6512
6513
6514 static int s2io_get_eeprom_len(struct net_device *dev)
6515 {
6516 return XENA_EEPROM_SPACE;
6517 }
6518
6519 static int s2io_get_sset_count(struct net_device *dev, int sset)
6520 {
6521 struct s2io_nic *sp = netdev_priv(dev);
6522
6523 switch (sset) {
6524 case ETH_SS_TEST:
6525 return S2IO_TEST_LEN;
6526 case ETH_SS_STATS:
6527 switch (sp->device_type) {
6528 case XFRAME_I_DEVICE:
6529 return XFRAME_I_STAT_LEN;
6530 case XFRAME_II_DEVICE:
6531 return XFRAME_II_STAT_LEN;
6532 default:
6533 return 0;
6534 }
6535 default:
6536 return -EOPNOTSUPP;
6537 }
6538 }
6539
6540 static void s2io_ethtool_get_strings(struct net_device *dev,
6541 u32 stringset, u8 *data)
6542 {
6543 int stat_size = 0;
6544 struct s2io_nic *sp = netdev_priv(dev);
6545
6546 switch (stringset) {
6547 case ETH_SS_TEST:
6548 memcpy(data, s2io_gstrings, S2IO_STRINGS_LEN);
6549 break;
6550 case ETH_SS_STATS:
6551 stat_size = sizeof(ethtool_xena_stats_keys);
6552 memcpy(data, &ethtool_xena_stats_keys, stat_size);
6553 if (sp->device_type == XFRAME_II_DEVICE) {
6554 memcpy(data + stat_size,
6555 &ethtool_enhanced_stats_keys,
6556 sizeof(ethtool_enhanced_stats_keys));
6557 stat_size += sizeof(ethtool_enhanced_stats_keys);
6558 }
6559
6560 memcpy(data + stat_size, &ethtool_driver_stats_keys,
6561 sizeof(ethtool_driver_stats_keys));
6562 }
6563 }
6564
6565 static int s2io_set_features(struct net_device *dev, netdev_features_t features)
6566 {
6567 struct s2io_nic *sp = netdev_priv(dev);
6568 netdev_features_t changed = (features ^ dev->features) & NETIF_F_LRO;
6569
6570 if (changed && netif_running(dev)) {
6571 int rc;
6572
6573 s2io_stop_all_tx_queue(sp);
6574 s2io_card_down(sp);
6575 dev->features = features;
6576 rc = s2io_card_up(sp);
6577 if (rc)
6578 s2io_reset(sp);
6579 else
6580 s2io_start_all_tx_queue(sp);
6581
6582 return rc ? rc : 1;
6583 }
6584
6585 return 0;
6586 }
6587
6588 static const struct ethtool_ops netdev_ethtool_ops = {
6589 .get_drvinfo = s2io_ethtool_gdrvinfo,
6590 .get_regs_len = s2io_ethtool_get_regs_len,
6591 .get_regs = s2io_ethtool_gregs,
6592 .get_link = ethtool_op_get_link,
6593 .get_eeprom_len = s2io_get_eeprom_len,
6594 .get_eeprom = s2io_ethtool_geeprom,
6595 .set_eeprom = s2io_ethtool_seeprom,
6596 .get_ringparam = s2io_ethtool_gringparam,
6597 .get_pauseparam = s2io_ethtool_getpause_data,
6598 .set_pauseparam = s2io_ethtool_setpause_data,
6599 .self_test = s2io_ethtool_test,
6600 .get_strings = s2io_ethtool_get_strings,
6601 .set_phys_id = s2io_ethtool_set_led,
6602 .get_ethtool_stats = s2io_get_ethtool_stats,
6603 .get_sset_count = s2io_get_sset_count,
6604 .get_link_ksettings = s2io_ethtool_get_link_ksettings,
6605 .set_link_ksettings = s2io_ethtool_set_link_ksettings,
6606 };
6607
6608 /**
6609 * s2io_ioctl - Entry point for the Ioctl
6610 * @dev : Device pointer.
6611 * @ifr : An IOCTL specefic structure, that can contain a pointer to
6612 * a proprietary structure used to pass information to the driver.
6613 * @cmd : This is used to distinguish between the different commands that
6614 * can be passed to the IOCTL functions.
6615 * Description:
6616 * Currently there are no special functionality supported in IOCTL, hence
6617 * function always return EOPNOTSUPPORTED
6618 */
6619
6620 static int s2io_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6621 {
6622 return -EOPNOTSUPP;
6623 }
6624
6625 /**
6626 * s2io_change_mtu - entry point to change MTU size for the device.
6627 * @dev : device pointer.
6628 * @new_mtu : the new MTU size for the device.
6629 * Description: A driver entry point to change MTU size for the device.
6630 * Before changing the MTU the device must be stopped.
6631 * Return value:
6632 * 0 on success and an appropriate (-)ve integer as defined in errno.h
6633 * file on failure.
6634 */
6635
6636 static int s2io_change_mtu(struct net_device *dev, int new_mtu)
6637 {
6638 struct s2io_nic *sp = netdev_priv(dev);
6639 int ret = 0;
6640
6641 dev->mtu = new_mtu;
6642 if (netif_running(dev)) {
6643 s2io_stop_all_tx_queue(sp);
6644 s2io_card_down(sp);
6645 ret = s2io_card_up(sp);
6646 if (ret) {
6647 DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n",
6648 __func__);
6649 return ret;
6650 }
6651 s2io_wake_all_tx_queue(sp);
6652 } else { /* Device is down */
6653 struct XENA_dev_config __iomem *bar0 = sp->bar0;
6654 u64 val64 = new_mtu;
6655
6656 writeq(vBIT(val64, 2, 14), &bar0->rmac_max_pyld_len);
6657 }
6658
6659 return ret;
6660 }
6661
6662 /**
6663 * s2io_set_link - Set the LInk status
6664 * @data: long pointer to device private structue
6665 * Description: Sets the link status for the adapter
6666 */
6667
6668 static void s2io_set_link(struct work_struct *work)
6669 {
6670 struct s2io_nic *nic = container_of(work, struct s2io_nic,
6671 set_link_task);
6672 struct net_device *dev = nic->dev;
6673 struct XENA_dev_config __iomem *bar0 = nic->bar0;
6674 register u64 val64;
6675 u16 subid;
6676
6677 rtnl_lock();
6678
6679 if (!netif_running(dev))
6680 goto out_unlock;
6681
6682 if (test_and_set_bit(__S2IO_STATE_LINK_TASK, &(nic->state))) {
6683 /* The card is being reset, no point doing anything */
6684 goto out_unlock;
6685 }
6686
6687 subid = nic->pdev->subsystem_device;
6688 if (s2io_link_fault_indication(nic) == MAC_RMAC_ERR_TIMER) {
6689 /*
6690 * Allow a small delay for the NICs self initiated
6691 * cleanup to complete.
6692 */
6693 msleep(100);
6694 }
6695
6696 val64 = readq(&bar0->adapter_status);
6697 if (LINK_IS_UP(val64)) {
6698 if (!(readq(&bar0->adapter_control) & ADAPTER_CNTL_EN)) {
6699 if (verify_xena_quiescence(nic)) {
6700 val64 = readq(&bar0->adapter_control);
6701 val64 |= ADAPTER_CNTL_EN;
6702 writeq(val64, &bar0->adapter_control);
6703 if (CARDS_WITH_FAULTY_LINK_INDICATORS(
6704 nic->device_type, subid)) {
6705 val64 = readq(&bar0->gpio_control);
6706 val64 |= GPIO_CTRL_GPIO_0;
6707 writeq(val64, &bar0->gpio_control);
6708 val64 = readq(&bar0->gpio_control);
6709 } else {
6710 val64 |= ADAPTER_LED_ON;
6711 writeq(val64, &bar0->adapter_control);
6712 }
6713 nic->device_enabled_once = true;
6714 } else {
6715 DBG_PRINT(ERR_DBG,
6716 "%s: Error: device is not Quiescent\n",
6717 dev->name);
6718 s2io_stop_all_tx_queue(nic);
6719 }
6720 }
6721 val64 = readq(&bar0->adapter_control);
6722 val64 |= ADAPTER_LED_ON;
6723 writeq(val64, &bar0->adapter_control);
6724 s2io_link(nic, LINK_UP);
6725 } else {
6726 if (CARDS_WITH_FAULTY_LINK_INDICATORS(nic->device_type,
6727 subid)) {
6728 val64 = readq(&bar0->gpio_control);
6729 val64 &= ~GPIO_CTRL_GPIO_0;
6730 writeq(val64, &bar0->gpio_control);
6731 val64 = readq(&bar0->gpio_control);
6732 }
6733 /* turn off LED */
6734 val64 = readq(&bar0->adapter_control);
6735 val64 = val64 & (~ADAPTER_LED_ON);
6736 writeq(val64, &bar0->adapter_control);
6737 s2io_link(nic, LINK_DOWN);
6738 }
6739 clear_bit(__S2IO_STATE_LINK_TASK, &(nic->state));
6740
6741 out_unlock:
6742 rtnl_unlock();
6743 }
6744
6745 static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
6746 struct buffAdd *ba,
6747 struct sk_buff **skb, u64 *temp0, u64 *temp1,
6748 u64 *temp2, int size)
6749 {
6750 struct net_device *dev = sp->dev;
6751 struct swStat *stats = &sp->mac_control.stats_info->sw_stat;
6752
6753 if ((sp->rxd_mode == RXD_MODE_1) && (rxdp->Host_Control == 0)) {
6754 struct RxD1 *rxdp1 = (struct RxD1 *)rxdp;
6755 /* allocate skb */
6756 if (*skb) {
6757 DBG_PRINT(INFO_DBG, "SKB is not NULL\n");
6758 /*
6759 * As Rx frame are not going to be processed,
6760 * using same mapped address for the Rxd
6761 * buffer pointer
6762 */
6763 rxdp1->Buffer0_ptr = *temp0;
6764 } else {
6765 *skb = netdev_alloc_skb(dev, size);
6766 if (!(*skb)) {
6767 DBG_PRINT(INFO_DBG,
6768 "%s: Out of memory to allocate %s\n",
6769 dev->name, "1 buf mode SKBs");
6770 stats->mem_alloc_fail_cnt++;
6771 return -ENOMEM ;
6772 }
6773 stats->mem_allocated += (*skb)->truesize;
6774 /* storing the mapped addr in a temp variable
6775 * such it will be used for next rxd whose
6776 * Host Control is NULL
6777 */
6778 rxdp1->Buffer0_ptr = *temp0 =
6779 pci_map_single(sp->pdev, (*skb)->data,
6780 size - NET_IP_ALIGN,
6781 PCI_DMA_FROMDEVICE);
6782 if (pci_dma_mapping_error(sp->pdev, rxdp1->Buffer0_ptr))
6783 goto memalloc_failed;
6784 rxdp->Host_Control = (unsigned long) (*skb);
6785 }
6786 } else if ((sp->rxd_mode == RXD_MODE_3B) && (rxdp->Host_Control == 0)) {
6787 struct RxD3 *rxdp3 = (struct RxD3 *)rxdp;
6788 /* Two buffer Mode */
6789 if (*skb) {
6790 rxdp3->Buffer2_ptr = *temp2;
6791 rxdp3->Buffer0_ptr = *temp0;
6792 rxdp3->Buffer1_ptr = *temp1;
6793 } else {
6794 *skb = netdev_alloc_skb(dev, size);
6795 if (!(*skb)) {
6796 DBG_PRINT(INFO_DBG,
6797 "%s: Out of memory to allocate %s\n",
6798 dev->name,
6799 "2 buf mode SKBs");
6800 stats->mem_alloc_fail_cnt++;
6801 return -ENOMEM;
6802 }
6803 stats->mem_allocated += (*skb)->truesize;
6804 rxdp3->Buffer2_ptr = *temp2 =
6805 pci_map_single(sp->pdev, (*skb)->data,
6806 dev->mtu + 4,
6807 PCI_DMA_FROMDEVICE);
6808 if (pci_dma_mapping_error(sp->pdev, rxdp3->Buffer2_ptr))
6809 goto memalloc_failed;
6810 rxdp3->Buffer0_ptr = *temp0 =
6811 pci_map_single(sp->pdev, ba->ba_0, BUF0_LEN,
6812 PCI_DMA_FROMDEVICE);
6813 if (pci_dma_mapping_error(sp->pdev,
6814 rxdp3->Buffer0_ptr)) {
6815 pci_unmap_single(sp->pdev,
6816 (dma_addr_t)rxdp3->Buffer2_ptr,
6817 dev->mtu + 4,
6818 PCI_DMA_FROMDEVICE);
6819 goto memalloc_failed;
6820 }
6821 rxdp->Host_Control = (unsigned long) (*skb);
6822
6823 /* Buffer-1 will be dummy buffer not used */
6824 rxdp3->Buffer1_ptr = *temp1 =
6825 pci_map_single(sp->pdev, ba->ba_1, BUF1_LEN,
6826 PCI_DMA_FROMDEVICE);
6827 if (pci_dma_mapping_error(sp->pdev,
6828 rxdp3->Buffer1_ptr)) {
6829 pci_unmap_single(sp->pdev,
6830 (dma_addr_t)rxdp3->Buffer0_ptr,
6831 BUF0_LEN, PCI_DMA_FROMDEVICE);
6832 pci_unmap_single(sp->pdev,
6833 (dma_addr_t)rxdp3->Buffer2_ptr,
6834 dev->mtu + 4,
6835 PCI_DMA_FROMDEVICE);
6836 goto memalloc_failed;
6837 }
6838 }
6839 }
6840 return 0;
6841
6842 memalloc_failed:
6843 stats->pci_map_fail_cnt++;
6844 stats->mem_freed += (*skb)->truesize;
6845 dev_kfree_skb(*skb);
6846 return -ENOMEM;
6847 }
6848
6849 static void set_rxd_buffer_size(struct s2io_nic *sp, struct RxD_t *rxdp,
6850 int size)
6851 {
6852 struct net_device *dev = sp->dev;
6853 if (sp->rxd_mode == RXD_MODE_1) {
6854 rxdp->Control_2 = SET_BUFFER0_SIZE_1(size - NET_IP_ALIGN);
6855 } else if (sp->rxd_mode == RXD_MODE_3B) {
6856 rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
6857 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
6858 rxdp->Control_2 |= SET_BUFFER2_SIZE_3(dev->mtu + 4);
6859 }
6860 }
6861
6862 static int rxd_owner_bit_reset(struct s2io_nic *sp)
6863 {
6864 int i, j, k, blk_cnt = 0, size;
6865 struct config_param *config = &sp->config;
6866 struct mac_info *mac_control = &sp->mac_control;
6867 struct net_device *dev = sp->dev;
6868 struct RxD_t *rxdp = NULL;
6869 struct sk_buff *skb = NULL;
6870 struct buffAdd *ba = NULL;
6871 u64 temp0_64 = 0, temp1_64 = 0, temp2_64 = 0;
6872
6873 /* Calculate the size based on ring mode */
6874 size = dev->mtu + HEADER_ETHERNET_II_802_3_SIZE +
6875 HEADER_802_2_SIZE + HEADER_SNAP_SIZE;
6876 if (sp->rxd_mode == RXD_MODE_1)
6877 size += NET_IP_ALIGN;
6878 else if (sp->rxd_mode == RXD_MODE_3B)
6879 size = dev->mtu + ALIGN_SIZE + BUF0_LEN + 4;
6880
6881 for (i = 0; i < config->rx_ring_num; i++) {
6882 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
6883 struct ring_info *ring = &mac_control->rings[i];
6884
6885 blk_cnt = rx_cfg->num_rxd / (rxd_count[sp->rxd_mode] + 1);
6886
6887 for (j = 0; j < blk_cnt; j++) {
6888 for (k = 0; k < rxd_count[sp->rxd_mode]; k++) {
6889 rxdp = ring->rx_blocks[j].rxds[k].virt_addr;
6890 if (sp->rxd_mode == RXD_MODE_3B)
6891 ba = &ring->ba[j][k];
6892 if (set_rxd_buffer_pointer(sp, rxdp, ba, &skb,
6893 &temp0_64,
6894 &temp1_64,
6895 &temp2_64,
6896 size) == -ENOMEM) {
6897 return 0;
6898 }
6899
6900 set_rxd_buffer_size(sp, rxdp, size);
6901 dma_wmb();
6902 /* flip the Ownership bit to Hardware */
6903 rxdp->Control_1 |= RXD_OWN_XENA;
6904 }
6905 }
6906 }
6907 return 0;
6908
6909 }
6910
6911 static int s2io_add_isr(struct s2io_nic *sp)
6912 {
6913 int ret = 0;
6914 struct net_device *dev = sp->dev;
6915 int err = 0;
6916
6917 if (sp->config.intr_type == MSI_X)
6918 ret = s2io_enable_msi_x(sp);
6919 if (ret) {
6920 DBG_PRINT(ERR_DBG, "%s: Defaulting to INTA\n", dev->name);
6921 sp->config.intr_type = INTA;
6922 }
6923
6924 /*
6925 * Store the values of the MSIX table in
6926 * the struct s2io_nic structure
6927 */
6928 store_xmsi_data(sp);
6929
6930 /* After proper initialization of H/W, register ISR */
6931 if (sp->config.intr_type == MSI_X) {
6932 int i, msix_rx_cnt = 0;
6933
6934 for (i = 0; i < sp->num_entries; i++) {
6935 if (sp->s2io_entries[i].in_use == MSIX_FLG) {
6936 if (sp->s2io_entries[i].type ==
6937 MSIX_RING_TYPE) {
6938 snprintf(sp->desc[i],
6939 sizeof(sp->desc[i]),
6940 "%s:MSI-X-%d-RX",
6941 dev->name, i);
6942 err = request_irq(sp->entries[i].vector,
6943 s2io_msix_ring_handle,
6944 0,
6945 sp->desc[i],
6946 sp->s2io_entries[i].arg);
6947 } else if (sp->s2io_entries[i].type ==
6948 MSIX_ALARM_TYPE) {
6949 snprintf(sp->desc[i],
6950 sizeof(sp->desc[i]),
6951 "%s:MSI-X-%d-TX",
6952 dev->name, i);
6953 err = request_irq(sp->entries[i].vector,
6954 s2io_msix_fifo_handle,
6955 0,
6956 sp->desc[i],
6957 sp->s2io_entries[i].arg);
6958
6959 }
6960 /* if either data or addr is zero print it. */
6961 if (!(sp->msix_info[i].addr &&
6962 sp->msix_info[i].data)) {
6963 DBG_PRINT(ERR_DBG,
6964 "%s @Addr:0x%llx Data:0x%llx\n",
6965 sp->desc[i],
6966 (unsigned long long)
6967 sp->msix_info[i].addr,
6968 (unsigned long long)
6969 ntohl(sp->msix_info[i].data));
6970 } else
6971 msix_rx_cnt++;
6972 if (err) {
6973 remove_msix_isr(sp);
6974
6975 DBG_PRINT(ERR_DBG,
6976 "%s:MSI-X-%d registration "
6977 "failed\n", dev->name, i);
6978
6979 DBG_PRINT(ERR_DBG,
6980 "%s: Defaulting to INTA\n",
6981 dev->name);
6982 sp->config.intr_type = INTA;
6983 break;
6984 }
6985 sp->s2io_entries[i].in_use =
6986 MSIX_REGISTERED_SUCCESS;
6987 }
6988 }
6989 if (!err) {
6990 pr_info("MSI-X-RX %d entries enabled\n", --msix_rx_cnt);
6991 DBG_PRINT(INFO_DBG,
6992 "MSI-X-TX entries enabled through alarm vector\n");
6993 }
6994 }
6995 if (sp->config.intr_type == INTA) {
6996 err = request_irq(sp->pdev->irq, s2io_isr, IRQF_SHARED,
6997 sp->name, dev);
6998 if (err) {
6999 DBG_PRINT(ERR_DBG, "%s: ISR registration failed\n",
7000 dev->name);
7001 return -1;
7002 }
7003 }
7004 return 0;
7005 }
7006
7007 static void s2io_rem_isr(struct s2io_nic *sp)
7008 {
7009 if (sp->config.intr_type == MSI_X)
7010 remove_msix_isr(sp);
7011 else
7012 remove_inta_isr(sp);
7013 }
7014
7015 static void do_s2io_card_down(struct s2io_nic *sp, int do_io)
7016 {
7017 int cnt = 0;
7018 struct XENA_dev_config __iomem *bar0 = sp->bar0;
7019 register u64 val64 = 0;
7020 struct config_param *config;
7021 config = &sp->config;
7022
7023 if (!is_s2io_card_up(sp))
7024 return;
7025
7026 del_timer_sync(&sp->alarm_timer);
7027 /* If s2io_set_link task is executing, wait till it completes. */
7028 while (test_and_set_bit(__S2IO_STATE_LINK_TASK, &(sp->state)))
7029 msleep(50);
7030 clear_bit(__S2IO_STATE_CARD_UP, &sp->state);
7031
7032 /* Disable napi */
7033 if (sp->config.napi) {
7034 int off = 0;
7035 if (config->intr_type == MSI_X) {
7036 for (; off < sp->config.rx_ring_num; off++)
7037 napi_disable(&sp->mac_control.rings[off].napi);
7038 }
7039 else
7040 napi_disable(&sp->napi);
7041 }
7042
7043 /* disable Tx and Rx traffic on the NIC */
7044 if (do_io)
7045 stop_nic(sp);
7046
7047 s2io_rem_isr(sp);
7048
7049 /* stop the tx queue, indicate link down */
7050 s2io_link(sp, LINK_DOWN);
7051
7052 /* Check if the device is Quiescent and then Reset the NIC */
7053 while (do_io) {
7054 /* As per the HW requirement we need to replenish the
7055 * receive buffer to avoid the ring bump. Since there is
7056 * no intention of processing the Rx frame at this pointwe are
7057 * just setting the ownership bit of rxd in Each Rx
7058 * ring to HW and set the appropriate buffer size
7059 * based on the ring mode
7060 */
7061 rxd_owner_bit_reset(sp);
7062
7063 val64 = readq(&bar0->adapter_status);
7064 if (verify_xena_quiescence(sp)) {
7065 if (verify_pcc_quiescent(sp, sp->device_enabled_once))
7066 break;
7067 }
7068
7069 msleep(50);
7070 cnt++;
7071 if (cnt == 10) {
7072 DBG_PRINT(ERR_DBG, "Device not Quiescent - "
7073 "adapter status reads 0x%llx\n",
7074 (unsigned long long)val64);
7075 break;
7076 }
7077 }
7078 if (do_io)
7079 s2io_reset(sp);
7080
7081 /* Free all Tx buffers */
7082 free_tx_buffers(sp);
7083
7084 /* Free all Rx buffers */
7085 free_rx_buffers(sp);
7086
7087 clear_bit(__S2IO_STATE_LINK_TASK, &(sp->state));
7088 }
7089
7090 static void s2io_card_down(struct s2io_nic *sp)
7091 {
7092 do_s2io_card_down(sp, 1);
7093 }
7094
7095 static int s2io_card_up(struct s2io_nic *sp)
7096 {
7097 int i, ret = 0;
7098 struct config_param *config;
7099 struct mac_info *mac_control;
7100 struct net_device *dev = sp->dev;
7101 u16 interruptible;
7102
7103 /* Initialize the H/W I/O registers */
7104 ret = init_nic(sp);
7105 if (ret != 0) {
7106 DBG_PRINT(ERR_DBG, "%s: H/W initialization failed\n",
7107 dev->name);
7108 if (ret != -EIO)
7109 s2io_reset(sp);
7110 return ret;
7111 }
7112
7113 /*
7114 * Initializing the Rx buffers. For now we are considering only 1
7115 * Rx ring and initializing buffers into 30 Rx blocks
7116 */
7117 config = &sp->config;
7118 mac_control = &sp->mac_control;
7119
7120 for (i = 0; i < config->rx_ring_num; i++) {
7121 struct ring_info *ring = &mac_control->rings[i];
7122
7123 ring->mtu = dev->mtu;
7124 ring->lro = !!(dev->features & NETIF_F_LRO);
7125 ret = fill_rx_buffers(sp, ring, 1);
7126 if (ret) {
7127 DBG_PRINT(ERR_DBG, "%s: Out of memory in Open\n",
7128 dev->name);
7129 s2io_reset(sp);
7130 free_rx_buffers(sp);
7131 return -ENOMEM;
7132 }
7133 DBG_PRINT(INFO_DBG, "Buf in ring:%d is %d:\n", i,
7134 ring->rx_bufs_left);
7135 }
7136
7137 /* Initialise napi */
7138 if (config->napi) {
7139 if (config->intr_type == MSI_X) {
7140 for (i = 0; i < sp->config.rx_ring_num; i++)
7141 napi_enable(&sp->mac_control.rings[i].napi);
7142 } else {
7143 napi_enable(&sp->napi);
7144 }
7145 }
7146
7147 /* Maintain the state prior to the open */
7148 if (sp->promisc_flg)
7149 sp->promisc_flg = 0;
7150 if (sp->m_cast_flg) {
7151 sp->m_cast_flg = 0;
7152 sp->all_multi_pos = 0;
7153 }
7154
7155 /* Setting its receive mode */
7156 s2io_set_multicast(dev);
7157
7158 if (dev->features & NETIF_F_LRO) {
7159 /* Initialize max aggregatable pkts per session based on MTU */
7160 sp->lro_max_aggr_per_sess = ((1<<16) - 1) / dev->mtu;
7161 /* Check if we can use (if specified) user provided value */
7162 if (lro_max_pkts < sp->lro_max_aggr_per_sess)
7163 sp->lro_max_aggr_per_sess = lro_max_pkts;
7164 }
7165
7166 /* Enable Rx Traffic and interrupts on the NIC */
7167 if (start_nic(sp)) {
7168 DBG_PRINT(ERR_DBG, "%s: Starting NIC failed\n", dev->name);
7169 s2io_reset(sp);
7170 free_rx_buffers(sp);
7171 return -ENODEV;
7172 }
7173
7174 /* Add interrupt service routine */
7175 if (s2io_add_isr(sp) != 0) {
7176 if (sp->config.intr_type == MSI_X)
7177 s2io_rem_isr(sp);
7178 s2io_reset(sp);
7179 free_rx_buffers(sp);
7180 return -ENODEV;
7181 }
7182
7183 timer_setup(&sp->alarm_timer, s2io_alarm_handle, 0);
7184 mod_timer(&sp->alarm_timer, jiffies + HZ / 2);
7185
7186 set_bit(__S2IO_STATE_CARD_UP, &sp->state);
7187
7188 /* Enable select interrupts */
7189 en_dis_err_alarms(sp, ENA_ALL_INTRS, ENABLE_INTRS);
7190 if (sp->config.intr_type != INTA) {
7191 interruptible = TX_TRAFFIC_INTR | TX_PIC_INTR;
7192 en_dis_able_nic_intrs(sp, interruptible, ENABLE_INTRS);
7193 } else {
7194 interruptible = TX_TRAFFIC_INTR | RX_TRAFFIC_INTR;
7195 interruptible |= TX_PIC_INTR;
7196 en_dis_able_nic_intrs(sp, interruptible, ENABLE_INTRS);
7197 }
7198
7199 return 0;
7200 }
7201
7202 /**
7203 * s2io_restart_nic - Resets the NIC.
7204 * @data : long pointer to the device private structure
7205 * Description:
7206 * This function is scheduled to be run by the s2io_tx_watchdog
7207 * function after 0.5 secs to reset the NIC. The idea is to reduce
7208 * the run time of the watch dog routine which is run holding a
7209 * spin lock.
7210 */
7211
7212 static void s2io_restart_nic(struct work_struct *work)
7213 {
7214 struct s2io_nic *sp = container_of(work, struct s2io_nic, rst_timer_task);
7215 struct net_device *dev = sp->dev;
7216
7217 rtnl_lock();
7218
7219 if (!netif_running(dev))
7220 goto out_unlock;
7221
7222 s2io_card_down(sp);
7223 if (s2io_card_up(sp)) {
7224 DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n", dev->name);
7225 }
7226 s2io_wake_all_tx_queue(sp);
7227 DBG_PRINT(ERR_DBG, "%s: was reset by Tx watchdog timer\n", dev->name);
7228 out_unlock:
7229 rtnl_unlock();
7230 }
7231
7232 /**
7233 * s2io_tx_watchdog - Watchdog for transmit side.
7234 * @dev : Pointer to net device structure
7235 * Description:
7236 * This function is triggered if the Tx Queue is stopped
7237 * for a pre-defined amount of time when the Interface is still up.
7238 * If the Interface is jammed in such a situation, the hardware is
7239 * reset (by s2io_close) and restarted again (by s2io_open) to
7240 * overcome any problem that might have been caused in the hardware.
7241 * Return value:
7242 * void
7243 */
7244
7245 static void s2io_tx_watchdog(struct net_device *dev)
7246 {
7247 struct s2io_nic *sp = netdev_priv(dev);
7248 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
7249
7250 if (netif_carrier_ok(dev)) {
7251 swstats->watchdog_timer_cnt++;
7252 schedule_work(&sp->rst_timer_task);
7253 swstats->soft_reset_cnt++;
7254 }
7255 }
7256
7257 /**
7258 * rx_osm_handler - To perform some OS related operations on SKB.
7259 * @sp: private member of the device structure,pointer to s2io_nic structure.
7260 * @skb : the socket buffer pointer.
7261 * @len : length of the packet
7262 * @cksum : FCS checksum of the frame.
7263 * @ring_no : the ring from which this RxD was extracted.
7264 * Description:
7265 * This function is called by the Rx interrupt serivce routine to perform
7266 * some OS related operations on the SKB before passing it to the upper
7267 * layers. It mainly checks if the checksum is OK, if so adds it to the
7268 * SKBs cksum variable, increments the Rx packet count and passes the SKB
7269 * to the upper layer. If the checksum is wrong, it increments the Rx
7270 * packet error count, frees the SKB and returns error.
7271 * Return value:
7272 * SUCCESS on success and -1 on failure.
7273 */
7274 static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp)
7275 {
7276 struct s2io_nic *sp = ring_data->nic;
7277 struct net_device *dev = ring_data->dev;
7278 struct sk_buff *skb = (struct sk_buff *)
7279 ((unsigned long)rxdp->Host_Control);
7280 int ring_no = ring_data->ring_no;
7281 u16 l3_csum, l4_csum;
7282 unsigned long long err = rxdp->Control_1 & RXD_T_CODE;
7283 struct lro *uninitialized_var(lro);
7284 u8 err_mask;
7285 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
7286
7287 skb->dev = dev;
7288
7289 if (err) {
7290 /* Check for parity error */
7291 if (err & 0x1)
7292 swstats->parity_err_cnt++;
7293
7294 err_mask = err >> 48;
7295 switch (err_mask) {
7296 case 1:
7297 swstats->rx_parity_err_cnt++;
7298 break;
7299
7300 case 2:
7301 swstats->rx_abort_cnt++;
7302 break;
7303
7304 case 3:
7305 swstats->rx_parity_abort_cnt++;
7306 break;
7307
7308 case 4:
7309 swstats->rx_rda_fail_cnt++;
7310 break;
7311
7312 case 5:
7313 swstats->rx_unkn_prot_cnt++;
7314 break;
7315
7316 case 6:
7317 swstats->rx_fcs_err_cnt++;
7318 break;
7319
7320 case 7:
7321 swstats->rx_buf_size_err_cnt++;
7322 break;
7323
7324 case 8:
7325 swstats->rx_rxd_corrupt_cnt++;
7326 break;
7327
7328 case 15:
7329 swstats->rx_unkn_err_cnt++;
7330 break;
7331 }
7332 /*
7333 * Drop the packet if bad transfer code. Exception being
7334 * 0x5, which could be due to unsupported IPv6 extension header.
7335 * In this case, we let stack handle the packet.
7336 * Note that in this case, since checksum will be incorrect,
7337 * stack will validate the same.
7338 */
7339 if (err_mask != 0x5) {
7340 DBG_PRINT(ERR_DBG, "%s: Rx error Value: 0x%x\n",
7341 dev->name, err_mask);
7342 dev->stats.rx_crc_errors++;
7343 swstats->mem_freed
7344 += skb->truesize;
7345 dev_kfree_skb(skb);
7346 ring_data->rx_bufs_left -= 1;
7347 rxdp->Host_Control = 0;
7348 return 0;
7349 }
7350 }
7351
7352 rxdp->Host_Control = 0;
7353 if (sp->rxd_mode == RXD_MODE_1) {
7354 int len = RXD_GET_BUFFER0_SIZE_1(rxdp->Control_2);
7355
7356 skb_put(skb, len);
7357 } else if (sp->rxd_mode == RXD_MODE_3B) {
7358 int get_block = ring_data->rx_curr_get_info.block_index;
7359 int get_off = ring_data->rx_curr_get_info.offset;
7360 int buf0_len = RXD_GET_BUFFER0_SIZE_3(rxdp->Control_2);
7361 int buf2_len = RXD_GET_BUFFER2_SIZE_3(rxdp->Control_2);
7362 unsigned char *buff = skb_push(skb, buf0_len);
7363
7364 struct buffAdd *ba = &ring_data->ba[get_block][get_off];
7365 memcpy(buff, ba->ba_0, buf0_len);
7366 skb_put(skb, buf2_len);
7367 }
7368
7369 if ((rxdp->Control_1 & TCP_OR_UDP_FRAME) &&
7370 ((!ring_data->lro) ||
7371 (!(rxdp->Control_1 & RXD_FRAME_IP_FRAG))) &&
7372 (dev->features & NETIF_F_RXCSUM)) {
7373 l3_csum = RXD_GET_L3_CKSUM(rxdp->Control_1);
7374 l4_csum = RXD_GET_L4_CKSUM(rxdp->Control_1);
7375 if ((l3_csum == L3_CKSUM_OK) && (l4_csum == L4_CKSUM_OK)) {
7376 /*
7377 * NIC verifies if the Checksum of the received
7378 * frame is Ok or not and accordingly returns
7379 * a flag in the RxD.
7380 */
7381 skb->ip_summed = CHECKSUM_UNNECESSARY;
7382 if (ring_data->lro) {
7383 u32 tcp_len = 0;
7384 u8 *tcp;
7385 int ret = 0;
7386
7387 ret = s2io_club_tcp_session(ring_data,
7388 skb->data, &tcp,
7389 &tcp_len, &lro,
7390 rxdp, sp);
7391 switch (ret) {
7392 case 3: /* Begin anew */
7393 lro->parent = skb;
7394 goto aggregate;
7395 case 1: /* Aggregate */
7396 lro_append_pkt(sp, lro, skb, tcp_len);
7397 goto aggregate;
7398 case 4: /* Flush session */
7399 lro_append_pkt(sp, lro, skb, tcp_len);
7400 queue_rx_frame(lro->parent,
7401 lro->vlan_tag);
7402 clear_lro_session(lro);
7403 swstats->flush_max_pkts++;
7404 goto aggregate;
7405 case 2: /* Flush both */
7406 lro->parent->data_len = lro->frags_len;
7407 swstats->sending_both++;
7408 queue_rx_frame(lro->parent,
7409 lro->vlan_tag);
7410 clear_lro_session(lro);
7411 goto send_up;
7412 case 0: /* sessions exceeded */
7413 case -1: /* non-TCP or not L2 aggregatable */
7414 case 5: /*
7415 * First pkt in session not
7416 * L3/L4 aggregatable
7417 */
7418 break;
7419 default:
7420 DBG_PRINT(ERR_DBG,
7421 "%s: Samadhana!!\n",
7422 __func__);
7423 BUG();
7424 }
7425 }
7426 } else {
7427 /*
7428 * Packet with erroneous checksum, let the
7429 * upper layers deal with it.
7430 */
7431 skb_checksum_none_assert(skb);
7432 }
7433 } else
7434 skb_checksum_none_assert(skb);
7435
7436 swstats->mem_freed += skb->truesize;
7437 send_up:
7438 skb_record_rx_queue(skb, ring_no);
7439 queue_rx_frame(skb, RXD_GET_VLAN_TAG(rxdp->Control_2));
7440 aggregate:
7441 sp->mac_control.rings[ring_no].rx_bufs_left -= 1;
7442 return SUCCESS;
7443 }
7444
7445 /**
7446 * s2io_link - stops/starts the Tx queue.
7447 * @sp : private member of the device structure, which is a pointer to the
7448 * s2io_nic structure.
7449 * @link : inidicates whether link is UP/DOWN.
7450 * Description:
7451 * This function stops/starts the Tx queue depending on whether the link
7452 * status of the NIC is is down or up. This is called by the Alarm
7453 * interrupt handler whenever a link change interrupt comes up.
7454 * Return value:
7455 * void.
7456 */
7457
7458 static void s2io_link(struct s2io_nic *sp, int link)
7459 {
7460 struct net_device *dev = sp->dev;
7461 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
7462
7463 if (link != sp->last_link_state) {
7464 init_tti(sp, link);
7465 if (link == LINK_DOWN) {
7466 DBG_PRINT(ERR_DBG, "%s: Link down\n", dev->name);
7467 s2io_stop_all_tx_queue(sp);
7468 netif_carrier_off(dev);
7469 if (swstats->link_up_cnt)
7470 swstats->link_up_time =
7471 jiffies - sp->start_time;
7472 swstats->link_down_cnt++;
7473 } else {
7474 DBG_PRINT(ERR_DBG, "%s: Link Up\n", dev->name);
7475 if (swstats->link_down_cnt)
7476 swstats->link_down_time =
7477 jiffies - sp->start_time;
7478 swstats->link_up_cnt++;
7479 netif_carrier_on(dev);
7480 s2io_wake_all_tx_queue(sp);
7481 }
7482 }
7483 sp->last_link_state = link;
7484 sp->start_time = jiffies;
7485 }
7486
7487 /**
7488 * s2io_init_pci -Initialization of PCI and PCI-X configuration registers .
7489 * @sp : private member of the device structure, which is a pointer to the
7490 * s2io_nic structure.
7491 * Description:
7492 * This function initializes a few of the PCI and PCI-X configuration registers
7493 * with recommended values.
7494 * Return value:
7495 * void
7496 */
7497
7498 static void s2io_init_pci(struct s2io_nic *sp)
7499 {
7500 u16 pci_cmd = 0, pcix_cmd = 0;
7501
7502 /* Enable Data Parity Error Recovery in PCI-X command register. */
7503 pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER,
7504 &(pcix_cmd));
7505 pci_write_config_word(sp->pdev, PCIX_COMMAND_REGISTER,
7506 (pcix_cmd | 1));
7507 pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER,
7508 &(pcix_cmd));
7509
7510 /* Set the PErr Response bit in PCI command register. */
7511 pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd);
7512 pci_write_config_word(sp->pdev, PCI_COMMAND,
7513 (pci_cmd | PCI_COMMAND_PARITY));
7514 pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd);
7515 }
7516
7517 static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type,
7518 u8 *dev_multiq)
7519 {
7520 int i;
7521
7522 if ((tx_fifo_num > MAX_TX_FIFOS) || (tx_fifo_num < 1)) {
7523 DBG_PRINT(ERR_DBG, "Requested number of tx fifos "
7524 "(%d) not supported\n", tx_fifo_num);
7525
7526 if (tx_fifo_num < 1)
7527 tx_fifo_num = 1;
7528 else
7529 tx_fifo_num = MAX_TX_FIFOS;
7530
7531 DBG_PRINT(ERR_DBG, "Default to %d tx fifos\n", tx_fifo_num);
7532 }
7533
7534 if (multiq)
7535 *dev_multiq = multiq;
7536
7537 if (tx_steering_type && (1 == tx_fifo_num)) {
7538 if (tx_steering_type != TX_DEFAULT_STEERING)
7539 DBG_PRINT(ERR_DBG,
7540 "Tx steering is not supported with "
7541 "one fifo. Disabling Tx steering.\n");
7542 tx_steering_type = NO_STEERING;
7543 }
7544
7545 if ((tx_steering_type < NO_STEERING) ||
7546 (tx_steering_type > TX_DEFAULT_STEERING)) {
7547 DBG_PRINT(ERR_DBG,
7548 "Requested transmit steering not supported\n");
7549 DBG_PRINT(ERR_DBG, "Disabling transmit steering\n");
7550 tx_steering_type = NO_STEERING;
7551 }
7552
7553 if (rx_ring_num > MAX_RX_RINGS) {
7554 DBG_PRINT(ERR_DBG,
7555 "Requested number of rx rings not supported\n");
7556 DBG_PRINT(ERR_DBG, "Default to %d rx rings\n",
7557 MAX_RX_RINGS);
7558 rx_ring_num = MAX_RX_RINGS;
7559 }
7560
7561 if ((*dev_intr_type != INTA) && (*dev_intr_type != MSI_X)) {
7562 DBG_PRINT(ERR_DBG, "Wrong intr_type requested. "
7563 "Defaulting to INTA\n");
7564 *dev_intr_type = INTA;
7565 }
7566
7567 if ((*dev_intr_type == MSI_X) &&
7568 ((pdev->device != PCI_DEVICE_ID_HERC_WIN) &&
7569 (pdev->device != PCI_DEVICE_ID_HERC_UNI))) {
7570 DBG_PRINT(ERR_DBG, "Xframe I does not support MSI_X. "
7571 "Defaulting to INTA\n");
7572 *dev_intr_type = INTA;
7573 }
7574
7575 if ((rx_ring_mode != 1) && (rx_ring_mode != 2)) {
7576 DBG_PRINT(ERR_DBG, "Requested ring mode not supported\n");
7577 DBG_PRINT(ERR_DBG, "Defaulting to 1-buffer mode\n");
7578 rx_ring_mode = 1;
7579 }
7580
7581 for (i = 0; i < MAX_RX_RINGS; i++)
7582 if (rx_ring_sz[i] > MAX_RX_BLOCKS_PER_RING) {
7583 DBG_PRINT(ERR_DBG, "Requested rx ring size not "
7584 "supported\nDefaulting to %d\n",
7585 MAX_RX_BLOCKS_PER_RING);
7586 rx_ring_sz[i] = MAX_RX_BLOCKS_PER_RING;
7587 }
7588
7589 return SUCCESS;
7590 }
7591
7592 /**
7593 * rts_ds_steer - Receive traffic steering based on IPv4 or IPv6 TOS
7594 * or Traffic class respectively.
7595 * @nic: device private variable
7596 * Description: The function configures the receive steering to
7597 * desired receive ring.
7598 * Return Value: SUCCESS on success and
7599 * '-1' on failure (endian settings incorrect).
7600 */
7601 static int rts_ds_steer(struct s2io_nic *nic, u8 ds_codepoint, u8 ring)
7602 {
7603 struct XENA_dev_config __iomem *bar0 = nic->bar0;
7604 register u64 val64 = 0;
7605
7606 if (ds_codepoint > 63)
7607 return FAILURE;
7608
7609 val64 = RTS_DS_MEM_DATA(ring);
7610 writeq(val64, &bar0->rts_ds_mem_data);
7611
7612 val64 = RTS_DS_MEM_CTRL_WE |
7613 RTS_DS_MEM_CTRL_STROBE_NEW_CMD |
7614 RTS_DS_MEM_CTRL_OFFSET(ds_codepoint);
7615
7616 writeq(val64, &bar0->rts_ds_mem_ctrl);
7617
7618 return wait_for_cmd_complete(&bar0->rts_ds_mem_ctrl,
7619 RTS_DS_MEM_CTRL_STROBE_CMD_BEING_EXECUTED,
7620 S2IO_BIT_RESET);
7621 }
7622
7623 static const struct net_device_ops s2io_netdev_ops = {
7624 .ndo_open = s2io_open,
7625 .ndo_stop = s2io_close,
7626 .ndo_get_stats = s2io_get_stats,
7627 .ndo_start_xmit = s2io_xmit,
7628 .ndo_validate_addr = eth_validate_addr,
7629 .ndo_set_rx_mode = s2io_set_multicast,
7630 .ndo_do_ioctl = s2io_ioctl,
7631 .ndo_set_mac_address = s2io_set_mac_addr,
7632 .ndo_change_mtu = s2io_change_mtu,
7633 .ndo_set_features = s2io_set_features,
7634 .ndo_tx_timeout = s2io_tx_watchdog,
7635 #ifdef CONFIG_NET_POLL_CONTROLLER
7636 .ndo_poll_controller = s2io_netpoll,
7637 #endif
7638 };
7639
7640 /**
7641 * s2io_init_nic - Initialization of the adapter .
7642 * @pdev : structure containing the PCI related information of the device.
7643 * @pre: List of PCI devices supported by the driver listed in s2io_tbl.
7644 * Description:
7645 * The function initializes an adapter identified by the pci_dec structure.
7646 * All OS related initialization including memory and device structure and
7647 * initlaization of the device private variable is done. Also the swapper
7648 * control register is initialized to enable read and write into the I/O
7649 * registers of the device.
7650 * Return value:
7651 * returns 0 on success and negative on failure.
7652 */
7653
7654 static int
7655 s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
7656 {
7657 struct s2io_nic *sp;
7658 struct net_device *dev;
7659 int i, j, ret;
7660 int dma_flag = false;
7661 u32 mac_up, mac_down;
7662 u64 val64 = 0, tmp64 = 0;
7663 struct XENA_dev_config __iomem *bar0 = NULL;
7664 u16 subid;
7665 struct config_param *config;
7666 struct mac_info *mac_control;
7667 int mode;
7668 u8 dev_intr_type = intr_type;
7669 u8 dev_multiq = 0;
7670
7671 ret = s2io_verify_parm(pdev, &dev_intr_type, &dev_multiq);
7672 if (ret)
7673 return ret;
7674
7675 ret = pci_enable_device(pdev);
7676 if (ret) {
7677 DBG_PRINT(ERR_DBG,
7678 "%s: pci_enable_device failed\n", __func__);
7679 return ret;
7680 }
7681
7682 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
7683 DBG_PRINT(INIT_DBG, "%s: Using 64bit DMA\n", __func__);
7684 dma_flag = true;
7685 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
7686 DBG_PRINT(ERR_DBG,
7687 "Unable to obtain 64bit DMA "
7688 "for consistent allocations\n");
7689 pci_disable_device(pdev);
7690 return -ENOMEM;
7691 }
7692 } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
7693 DBG_PRINT(INIT_DBG, "%s: Using 32bit DMA\n", __func__);
7694 } else {
7695 pci_disable_device(pdev);
7696 return -ENOMEM;
7697 }
7698 ret = pci_request_regions(pdev, s2io_driver_name);
7699 if (ret) {
7700 DBG_PRINT(ERR_DBG, "%s: Request Regions failed - %x\n",
7701 __func__, ret);
7702 pci_disable_device(pdev);
7703 return -ENODEV;
7704 }
7705 if (dev_multiq)
7706 dev = alloc_etherdev_mq(sizeof(struct s2io_nic), tx_fifo_num);
7707 else
7708 dev = alloc_etherdev(sizeof(struct s2io_nic));
7709 if (dev == NULL) {
7710 pci_disable_device(pdev);
7711 pci_release_regions(pdev);
7712 return -ENODEV;
7713 }
7714
7715 pci_set_master(pdev);
7716 pci_set_drvdata(pdev, dev);
7717 SET_NETDEV_DEV(dev, &pdev->dev);
7718
7719 /* Private member variable initialized to s2io NIC structure */
7720 sp = netdev_priv(dev);
7721 sp->dev = dev;
7722 sp->pdev = pdev;
7723 sp->high_dma_flag = dma_flag;
7724 sp->device_enabled_once = false;
7725 if (rx_ring_mode == 1)
7726 sp->rxd_mode = RXD_MODE_1;
7727 if (rx_ring_mode == 2)
7728 sp->rxd_mode = RXD_MODE_3B;
7729
7730 sp->config.intr_type = dev_intr_type;
7731
7732 if ((pdev->device == PCI_DEVICE_ID_HERC_WIN) ||
7733 (pdev->device == PCI_DEVICE_ID_HERC_UNI))
7734 sp->device_type = XFRAME_II_DEVICE;
7735 else
7736 sp->device_type = XFRAME_I_DEVICE;
7737
7738
7739 /* Initialize some PCI/PCI-X fields of the NIC. */
7740 s2io_init_pci(sp);
7741
7742 /*
7743 * Setting the device configuration parameters.
7744 * Most of these parameters can be specified by the user during
7745 * module insertion as they are module loadable parameters. If
7746 * these parameters are not not specified during load time, they
7747 * are initialized with default values.
7748 */
7749 config = &sp->config;
7750 mac_control = &sp->mac_control;
7751
7752 config->napi = napi;
7753 config->tx_steering_type = tx_steering_type;
7754
7755 /* Tx side parameters. */
7756 if (config->tx_steering_type == TX_PRIORITY_STEERING)
7757 config->tx_fifo_num = MAX_TX_FIFOS;
7758 else
7759 config->tx_fifo_num = tx_fifo_num;
7760
7761 /* Initialize the fifos used for tx steering */
7762 if (config->tx_fifo_num < 5) {
7763 if (config->tx_fifo_num == 1)
7764 sp->total_tcp_fifos = 1;
7765 else
7766 sp->total_tcp_fifos = config->tx_fifo_num - 1;
7767 sp->udp_fifo_idx = config->tx_fifo_num - 1;
7768 sp->total_udp_fifos = 1;
7769 sp->other_fifo_idx = sp->total_tcp_fifos - 1;
7770 } else {
7771 sp->total_tcp_fifos = (tx_fifo_num - FIFO_UDP_MAX_NUM -
7772 FIFO_OTHER_MAX_NUM);
7773 sp->udp_fifo_idx = sp->total_tcp_fifos;
7774 sp->total_udp_fifos = FIFO_UDP_MAX_NUM;
7775 sp->other_fifo_idx = sp->udp_fifo_idx + FIFO_UDP_MAX_NUM;
7776 }
7777
7778 config->multiq = dev_multiq;
7779 for (i = 0; i < config->tx_fifo_num; i++) {
7780 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
7781
7782 tx_cfg->fifo_len = tx_fifo_len[i];
7783 tx_cfg->fifo_priority = i;
7784 }
7785
7786 /* mapping the QoS priority to the configured fifos */
7787 for (i = 0; i < MAX_TX_FIFOS; i++)
7788 config->fifo_mapping[i] = fifo_map[config->tx_fifo_num - 1][i];
7789
7790 /* map the hashing selector table to the configured fifos */
7791 for (i = 0; i < config->tx_fifo_num; i++)
7792 sp->fifo_selector[i] = fifo_selector[i];
7793
7794
7795 config->tx_intr_type = TXD_INT_TYPE_UTILZ;
7796 for (i = 0; i < config->tx_fifo_num; i++) {
7797 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
7798
7799 tx_cfg->f_no_snoop = (NO_SNOOP_TXD | NO_SNOOP_TXD_BUFFER);
7800 if (tx_cfg->fifo_len < 65) {
7801 config->tx_intr_type = TXD_INT_TYPE_PER_LIST;
7802 break;
7803 }
7804 }
7805 /* + 2 because one Txd for skb->data and one Txd for UFO */
7806 config->max_txds = MAX_SKB_FRAGS + 2;
7807
7808 /* Rx side parameters. */
7809 config->rx_ring_num = rx_ring_num;
7810 for (i = 0; i < config->rx_ring_num; i++) {
7811 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
7812 struct ring_info *ring = &mac_control->rings[i];
7813
7814 rx_cfg->num_rxd = rx_ring_sz[i] * (rxd_count[sp->rxd_mode] + 1);
7815 rx_cfg->ring_priority = i;
7816 ring->rx_bufs_left = 0;
7817 ring->rxd_mode = sp->rxd_mode;
7818 ring->rxd_count = rxd_count[sp->rxd_mode];
7819 ring->pdev = sp->pdev;
7820 ring->dev = sp->dev;
7821 }
7822
7823 for (i = 0; i < rx_ring_num; i++) {
7824 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
7825
7826 rx_cfg->ring_org = RING_ORG_BUFF1;
7827 rx_cfg->f_no_snoop = (NO_SNOOP_RXD | NO_SNOOP_RXD_BUFFER);
7828 }
7829
7830 /* Setting Mac Control parameters */
7831 mac_control->rmac_pause_time = rmac_pause_time;
7832 mac_control->mc_pause_threshold_q0q3 = mc_pause_threshold_q0q3;
7833 mac_control->mc_pause_threshold_q4q7 = mc_pause_threshold_q4q7;
7834
7835
7836 /* initialize the shared memory used by the NIC and the host */
7837 if (init_shared_mem(sp)) {
7838 DBG_PRINT(ERR_DBG, "%s: Memory allocation failed\n", dev->name);
7839 ret = -ENOMEM;
7840 goto mem_alloc_failed;
7841 }
7842
7843 sp->bar0 = pci_ioremap_bar(pdev, 0);
7844 if (!sp->bar0) {
7845 DBG_PRINT(ERR_DBG, "%s: Neterion: cannot remap io mem1\n",
7846 dev->name);
7847 ret = -ENOMEM;
7848 goto bar0_remap_failed;
7849 }
7850
7851 sp->bar1 = pci_ioremap_bar(pdev, 2);
7852 if (!sp->bar1) {
7853 DBG_PRINT(ERR_DBG, "%s: Neterion: cannot remap io mem2\n",
7854 dev->name);
7855 ret = -ENOMEM;
7856 goto bar1_remap_failed;
7857 }
7858
7859 /* Initializing the BAR1 address as the start of the FIFO pointer. */
7860 for (j = 0; j < MAX_TX_FIFOS; j++) {
7861 mac_control->tx_FIFO_start[j] = sp->bar1 + (j * 0x00020000);
7862 }
7863
7864 /* Driver entry points */
7865 dev->netdev_ops = &s2io_netdev_ops;
7866 dev->ethtool_ops = &netdev_ethtool_ops;
7867 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
7868 NETIF_F_TSO | NETIF_F_TSO6 |
7869 NETIF_F_RXCSUM | NETIF_F_LRO;
7870 dev->features |= dev->hw_features |
7871 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
7872 if (sp->high_dma_flag == true)
7873 dev->features |= NETIF_F_HIGHDMA;
7874 dev->watchdog_timeo = WATCH_DOG_TIMEOUT;
7875 INIT_WORK(&sp->rst_timer_task, s2io_restart_nic);
7876 INIT_WORK(&sp->set_link_task, s2io_set_link);
7877
7878 pci_save_state(sp->pdev);
7879
7880 /* Setting swapper control on the NIC, for proper reset operation */
7881 if (s2io_set_swapper(sp)) {
7882 DBG_PRINT(ERR_DBG, "%s: swapper settings are wrong\n",
7883 dev->name);
7884 ret = -EAGAIN;
7885 goto set_swap_failed;
7886 }
7887
7888 /* Verify if the Herc works on the slot its placed into */
7889 if (sp->device_type & XFRAME_II_DEVICE) {
7890 mode = s2io_verify_pci_mode(sp);
7891 if (mode < 0) {
7892 DBG_PRINT(ERR_DBG, "%s: Unsupported PCI bus mode\n",
7893 __func__);
7894 ret = -EBADSLT;
7895 goto set_swap_failed;
7896 }
7897 }
7898
7899 if (sp->config.intr_type == MSI_X) {
7900 sp->num_entries = config->rx_ring_num + 1;
7901 ret = s2io_enable_msi_x(sp);
7902
7903 if (!ret) {
7904 ret = s2io_test_msi(sp);
7905 /* rollback MSI-X, will re-enable during add_isr() */
7906 remove_msix_isr(sp);
7907 }
7908 if (ret) {
7909
7910 DBG_PRINT(ERR_DBG,
7911 "MSI-X requested but failed to enable\n");
7912 sp->config.intr_type = INTA;
7913 }
7914 }
7915
7916 if (config->intr_type == MSI_X) {
7917 for (i = 0; i < config->rx_ring_num ; i++) {
7918 struct ring_info *ring = &mac_control->rings[i];
7919
7920 netif_napi_add(dev, &ring->napi, s2io_poll_msix, 64);
7921 }
7922 } else {
7923 netif_napi_add(dev, &sp->napi, s2io_poll_inta, 64);
7924 }
7925
7926 /* Not needed for Herc */
7927 if (sp->device_type & XFRAME_I_DEVICE) {
7928 /*
7929 * Fix for all "FFs" MAC address problems observed on
7930 * Alpha platforms
7931 */
7932 fix_mac_address(sp);
7933 s2io_reset(sp);
7934 }
7935
7936 /*
7937 * MAC address initialization.
7938 * For now only one mac address will be read and used.
7939 */
7940 bar0 = sp->bar0;
7941 val64 = RMAC_ADDR_CMD_MEM_RD | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
7942 RMAC_ADDR_CMD_MEM_OFFSET(0 + S2IO_MAC_ADDR_START_OFFSET);
7943 writeq(val64, &bar0->rmac_addr_cmd_mem);
7944 wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
7945 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
7946 S2IO_BIT_RESET);
7947 tmp64 = readq(&bar0->rmac_addr_data0_mem);
7948 mac_down = (u32)tmp64;
7949 mac_up = (u32) (tmp64 >> 32);
7950
7951 sp->def_mac_addr[0].mac_addr[3] = (u8) (mac_up);
7952 sp->def_mac_addr[0].mac_addr[2] = (u8) (mac_up >> 8);
7953 sp->def_mac_addr[0].mac_addr[1] = (u8) (mac_up >> 16);
7954 sp->def_mac_addr[0].mac_addr[0] = (u8) (mac_up >> 24);
7955 sp->def_mac_addr[0].mac_addr[5] = (u8) (mac_down >> 16);
7956 sp->def_mac_addr[0].mac_addr[4] = (u8) (mac_down >> 24);
7957
7958 /* Set the factory defined MAC address initially */
7959 dev->addr_len = ETH_ALEN;
7960 memcpy(dev->dev_addr, sp->def_mac_addr, ETH_ALEN);
7961
7962 /* initialize number of multicast & unicast MAC entries variables */
7963 if (sp->device_type == XFRAME_I_DEVICE) {
7964 config->max_mc_addr = S2IO_XENA_MAX_MC_ADDRESSES;
7965 config->max_mac_addr = S2IO_XENA_MAX_MAC_ADDRESSES;
7966 config->mc_start_offset = S2IO_XENA_MC_ADDR_START_OFFSET;
7967 } else if (sp->device_type == XFRAME_II_DEVICE) {
7968 config->max_mc_addr = S2IO_HERC_MAX_MC_ADDRESSES;
7969 config->max_mac_addr = S2IO_HERC_MAX_MAC_ADDRESSES;
7970 config->mc_start_offset = S2IO_HERC_MC_ADDR_START_OFFSET;
7971 }
7972
7973 /* MTU range: 46 - 9600 */
7974 dev->min_mtu = MIN_MTU;
7975 dev->max_mtu = S2IO_JUMBO_SIZE;
7976
7977 /* store mac addresses from CAM to s2io_nic structure */
7978 do_s2io_store_unicast_mc(sp);
7979
7980 /* Configure MSIX vector for number of rings configured plus one */
7981 if ((sp->device_type == XFRAME_II_DEVICE) &&
7982 (config->intr_type == MSI_X))
7983 sp->num_entries = config->rx_ring_num + 1;
7984
7985 /* Store the values of the MSIX table in the s2io_nic structure */
7986 store_xmsi_data(sp);
7987 /* reset Nic and bring it to known state */
7988 s2io_reset(sp);
7989
7990 /*
7991 * Initialize link state flags
7992 * and the card state parameter
7993 */
7994 sp->state = 0;
7995
7996 /* Initialize spinlocks */
7997 for (i = 0; i < sp->config.tx_fifo_num; i++) {
7998 struct fifo_info *fifo = &mac_control->fifos[i];
7999
8000 spin_lock_init(&fifo->tx_lock);
8001 }
8002
8003 /*
8004 * SXE-002: Configure link and activity LED to init state
8005 * on driver load.
8006 */
8007 subid = sp->pdev->subsystem_device;
8008 if ((subid & 0xFF) >= 0x07) {
8009 val64 = readq(&bar0->gpio_control);
8010 val64 |= 0x0000800000000000ULL;
8011 writeq(val64, &bar0->gpio_control);
8012 val64 = 0x0411040400000000ULL;
8013 writeq(val64, (void __iomem *)bar0 + 0x2700);
8014 val64 = readq(&bar0->gpio_control);
8015 }
8016
8017 sp->rx_csum = 1; /* Rx chksum verify enabled by default */
8018
8019 if (register_netdev(dev)) {
8020 DBG_PRINT(ERR_DBG, "Device registration failed\n");
8021 ret = -ENODEV;
8022 goto register_failed;
8023 }
8024 s2io_vpd_read(sp);
8025 DBG_PRINT(ERR_DBG, "Copyright(c) 2002-2010 Exar Corp.\n");
8026 DBG_PRINT(ERR_DBG, "%s: Neterion %s (rev %d)\n", dev->name,
8027 sp->product_name, pdev->revision);
8028 DBG_PRINT(ERR_DBG, "%s: Driver version %s\n", dev->name,
8029 s2io_driver_version);
8030 DBG_PRINT(ERR_DBG, "%s: MAC Address: %pM\n", dev->name, dev->dev_addr);
8031 DBG_PRINT(ERR_DBG, "Serial number: %s\n", sp->serial_num);
8032 if (sp->device_type & XFRAME_II_DEVICE) {
8033 mode = s2io_print_pci_mode(sp);
8034 if (mode < 0) {
8035 ret = -EBADSLT;
8036 unregister_netdev(dev);
8037 goto set_swap_failed;
8038 }
8039 }
8040 switch (sp->rxd_mode) {
8041 case RXD_MODE_1:
8042 DBG_PRINT(ERR_DBG, "%s: 1-Buffer receive mode enabled\n",
8043 dev->name);
8044 break;
8045 case RXD_MODE_3B:
8046 DBG_PRINT(ERR_DBG, "%s: 2-Buffer receive mode enabled\n",
8047 dev->name);
8048 break;
8049 }
8050
8051 switch (sp->config.napi) {
8052 case 0:
8053 DBG_PRINT(ERR_DBG, "%s: NAPI disabled\n", dev->name);
8054 break;
8055 case 1:
8056 DBG_PRINT(ERR_DBG, "%s: NAPI enabled\n", dev->name);
8057 break;
8058 }
8059
8060 DBG_PRINT(ERR_DBG, "%s: Using %d Tx fifo(s)\n", dev->name,
8061 sp->config.tx_fifo_num);
8062
8063 DBG_PRINT(ERR_DBG, "%s: Using %d Rx ring(s)\n", dev->name,
8064 sp->config.rx_ring_num);
8065
8066 switch (sp->config.intr_type) {
8067 case INTA:
8068 DBG_PRINT(ERR_DBG, "%s: Interrupt type INTA\n", dev->name);
8069 break;
8070 case MSI_X:
8071 DBG_PRINT(ERR_DBG, "%s: Interrupt type MSI-X\n", dev->name);
8072 break;
8073 }
8074 if (sp->config.multiq) {
8075 for (i = 0; i < sp->config.tx_fifo_num; i++) {
8076 struct fifo_info *fifo = &mac_control->fifos[i];
8077
8078 fifo->multiq = config->multiq;
8079 }
8080 DBG_PRINT(ERR_DBG, "%s: Multiqueue support enabled\n",
8081 dev->name);
8082 } else
8083 DBG_PRINT(ERR_DBG, "%s: Multiqueue support disabled\n",
8084 dev->name);
8085
8086 switch (sp->config.tx_steering_type) {
8087 case NO_STEERING:
8088 DBG_PRINT(ERR_DBG, "%s: No steering enabled for transmit\n",
8089 dev->name);
8090 break;
8091 case TX_PRIORITY_STEERING:
8092 DBG_PRINT(ERR_DBG,
8093 "%s: Priority steering enabled for transmit\n",
8094 dev->name);
8095 break;
8096 case TX_DEFAULT_STEERING:
8097 DBG_PRINT(ERR_DBG,
8098 "%s: Default steering enabled for transmit\n",
8099 dev->name);
8100 }
8101
8102 DBG_PRINT(ERR_DBG, "%s: Large receive offload enabled\n",
8103 dev->name);
8104 /* Initialize device name */
8105 snprintf(sp->name, sizeof(sp->name), "%s Neterion %s", dev->name,
8106 sp->product_name);
8107
8108 if (vlan_tag_strip)
8109 sp->vlan_strip_flag = 1;
8110 else
8111 sp->vlan_strip_flag = 0;
8112
8113 /*
8114 * Make Link state as off at this point, when the Link change
8115 * interrupt comes the state will be automatically changed to
8116 * the right state.
8117 */
8118 netif_carrier_off(dev);
8119
8120 return 0;
8121
8122 register_failed:
8123 set_swap_failed:
8124 iounmap(sp->bar1);
8125 bar1_remap_failed:
8126 iounmap(sp->bar0);
8127 bar0_remap_failed:
8128 mem_alloc_failed:
8129 free_shared_mem(sp);
8130 pci_disable_device(pdev);
8131 pci_release_regions(pdev);
8132 free_netdev(dev);
8133
8134 return ret;
8135 }
8136
8137 /**
8138 * s2io_rem_nic - Free the PCI device
8139 * @pdev: structure containing the PCI related information of the device.
8140 * Description: This function is called by the Pci subsystem to release a
8141 * PCI device and free up all resource held up by the device. This could
8142 * be in response to a Hot plug event or when the driver is to be removed
8143 * from memory.
8144 */
8145
8146 static void s2io_rem_nic(struct pci_dev *pdev)
8147 {
8148 struct net_device *dev = pci_get_drvdata(pdev);
8149 struct s2io_nic *sp;
8150
8151 if (dev == NULL) {
8152 DBG_PRINT(ERR_DBG, "Driver Data is NULL!!\n");
8153 return;
8154 }
8155
8156 sp = netdev_priv(dev);
8157
8158 cancel_work_sync(&sp->rst_timer_task);
8159 cancel_work_sync(&sp->set_link_task);
8160
8161 unregister_netdev(dev);
8162
8163 free_shared_mem(sp);
8164 iounmap(sp->bar0);
8165 iounmap(sp->bar1);
8166 pci_release_regions(pdev);
8167 free_netdev(dev);
8168 pci_disable_device(pdev);
8169 }
8170
8171 module_pci_driver(s2io_driver);
8172
8173 static int check_L2_lro_capable(u8 *buffer, struct iphdr **ip,
8174 struct tcphdr **tcp, struct RxD_t *rxdp,
8175 struct s2io_nic *sp)
8176 {
8177 int ip_off;
8178 u8 l2_type = (u8)((rxdp->Control_1 >> 37) & 0x7), ip_len;
8179
8180 if (!(rxdp->Control_1 & RXD_FRAME_PROTO_TCP)) {
8181 DBG_PRINT(INIT_DBG,
8182 "%s: Non-TCP frames not supported for LRO\n",
8183 __func__);
8184 return -1;
8185 }
8186
8187 /* Checking for DIX type or DIX type with VLAN */
8188 if ((l2_type == 0) || (l2_type == 4)) {
8189 ip_off = HEADER_ETHERNET_II_802_3_SIZE;
8190 /*
8191 * If vlan stripping is disabled and the frame is VLAN tagged,
8192 * shift the offset by the VLAN header size bytes.
8193 */
8194 if ((!sp->vlan_strip_flag) &&
8195 (rxdp->Control_1 & RXD_FRAME_VLAN_TAG))
8196 ip_off += HEADER_VLAN_SIZE;
8197 } else {
8198 /* LLC, SNAP etc are considered non-mergeable */
8199 return -1;
8200 }
8201
8202 *ip = (struct iphdr *)(buffer + ip_off);
8203 ip_len = (u8)((*ip)->ihl);
8204 ip_len <<= 2;
8205 *tcp = (struct tcphdr *)((unsigned long)*ip + ip_len);
8206
8207 return 0;
8208 }
8209
8210 static int check_for_socket_match(struct lro *lro, struct iphdr *ip,
8211 struct tcphdr *tcp)
8212 {
8213 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8214 if ((lro->iph->saddr != ip->saddr) ||
8215 (lro->iph->daddr != ip->daddr) ||
8216 (lro->tcph->source != tcp->source) ||
8217 (lro->tcph->dest != tcp->dest))
8218 return -1;
8219 return 0;
8220 }
8221
8222 static inline int get_l4_pyld_length(struct iphdr *ip, struct tcphdr *tcp)
8223 {
8224 return ntohs(ip->tot_len) - (ip->ihl << 2) - (tcp->doff << 2);
8225 }
8226
8227 static void initiate_new_session(struct lro *lro, u8 *l2h,
8228 struct iphdr *ip, struct tcphdr *tcp,
8229 u32 tcp_pyld_len, u16 vlan_tag)
8230 {
8231 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8232 lro->l2h = l2h;
8233 lro->iph = ip;
8234 lro->tcph = tcp;
8235 lro->tcp_next_seq = tcp_pyld_len + ntohl(tcp->seq);
8236 lro->tcp_ack = tcp->ack_seq;
8237 lro->sg_num = 1;
8238 lro->total_len = ntohs(ip->tot_len);
8239 lro->frags_len = 0;
8240 lro->vlan_tag = vlan_tag;
8241 /*
8242 * Check if we saw TCP timestamp.
8243 * Other consistency checks have already been done.
8244 */
8245 if (tcp->doff == 8) {
8246 __be32 *ptr;
8247 ptr = (__be32 *)(tcp+1);
8248 lro->saw_ts = 1;
8249 lro->cur_tsval = ntohl(*(ptr+1));
8250 lro->cur_tsecr = *(ptr+2);
8251 }
8252 lro->in_use = 1;
8253 }
8254
8255 static void update_L3L4_header(struct s2io_nic *sp, struct lro *lro)
8256 {
8257 struct iphdr *ip = lro->iph;
8258 struct tcphdr *tcp = lro->tcph;
8259 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
8260
8261 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8262
8263 /* Update L3 header */
8264 csum_replace2(&ip->check, ip->tot_len, htons(lro->total_len));
8265 ip->tot_len = htons(lro->total_len);
8266
8267 /* Update L4 header */
8268 tcp->ack_seq = lro->tcp_ack;
8269 tcp->window = lro->window;
8270
8271 /* Update tsecr field if this session has timestamps enabled */
8272 if (lro->saw_ts) {
8273 __be32 *ptr = (__be32 *)(tcp + 1);
8274 *(ptr+2) = lro->cur_tsecr;
8275 }
8276
8277 /* Update counters required for calculation of
8278 * average no. of packets aggregated.
8279 */
8280 swstats->sum_avg_pkts_aggregated += lro->sg_num;
8281 swstats->num_aggregations++;
8282 }
8283
8284 static void aggregate_new_rx(struct lro *lro, struct iphdr *ip,
8285 struct tcphdr *tcp, u32 l4_pyld)
8286 {
8287 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8288 lro->total_len += l4_pyld;
8289 lro->frags_len += l4_pyld;
8290 lro->tcp_next_seq += l4_pyld;
8291 lro->sg_num++;
8292
8293 /* Update ack seq no. and window ad(from this pkt) in LRO object */
8294 lro->tcp_ack = tcp->ack_seq;
8295 lro->window = tcp->window;
8296
8297 if (lro->saw_ts) {
8298 __be32 *ptr;
8299 /* Update tsecr and tsval from this packet */
8300 ptr = (__be32 *)(tcp+1);
8301 lro->cur_tsval = ntohl(*(ptr+1));
8302 lro->cur_tsecr = *(ptr + 2);
8303 }
8304 }
8305
8306 static int verify_l3_l4_lro_capable(struct lro *l_lro, struct iphdr *ip,
8307 struct tcphdr *tcp, u32 tcp_pyld_len)
8308 {
8309 u8 *ptr;
8310
8311 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8312
8313 if (!tcp_pyld_len) {
8314 /* Runt frame or a pure ack */
8315 return -1;
8316 }
8317
8318 if (ip->ihl != 5) /* IP has options */
8319 return -1;
8320
8321 /* If we see CE codepoint in IP header, packet is not mergeable */
8322 if (INET_ECN_is_ce(ipv4_get_dsfield(ip)))
8323 return -1;
8324
8325 /* If we see ECE or CWR flags in TCP header, packet is not mergeable */
8326 if (tcp->urg || tcp->psh || tcp->rst ||
8327 tcp->syn || tcp->fin ||
8328 tcp->ece || tcp->cwr || !tcp->ack) {
8329 /*
8330 * Currently recognize only the ack control word and
8331 * any other control field being set would result in
8332 * flushing the LRO session
8333 */
8334 return -1;
8335 }
8336
8337 /*
8338 * Allow only one TCP timestamp option. Don't aggregate if
8339 * any other options are detected.
8340 */
8341 if (tcp->doff != 5 && tcp->doff != 8)
8342 return -1;
8343
8344 if (tcp->doff == 8) {
8345 ptr = (u8 *)(tcp + 1);
8346 while (*ptr == TCPOPT_NOP)
8347 ptr++;
8348 if (*ptr != TCPOPT_TIMESTAMP || *(ptr+1) != TCPOLEN_TIMESTAMP)
8349 return -1;
8350
8351 /* Ensure timestamp value increases monotonically */
8352 if (l_lro)
8353 if (l_lro->cur_tsval > ntohl(*((__be32 *)(ptr+2))))
8354 return -1;
8355
8356 /* timestamp echo reply should be non-zero */
8357 if (*((__be32 *)(ptr+6)) == 0)
8358 return -1;
8359 }
8360
8361 return 0;
8362 }
8363
8364 static int s2io_club_tcp_session(struct ring_info *ring_data, u8 *buffer,
8365 u8 **tcp, u32 *tcp_len, struct lro **lro,
8366 struct RxD_t *rxdp, struct s2io_nic *sp)
8367 {
8368 struct iphdr *ip;
8369 struct tcphdr *tcph;
8370 int ret = 0, i;
8371 u16 vlan_tag = 0;
8372 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
8373
8374 ret = check_L2_lro_capable(buffer, &ip, (struct tcphdr **)tcp,
8375 rxdp, sp);
8376 if (ret)
8377 return ret;
8378
8379 DBG_PRINT(INFO_DBG, "IP Saddr: %x Daddr: %x\n", ip->saddr, ip->daddr);
8380
8381 vlan_tag = RXD_GET_VLAN_TAG(rxdp->Control_2);
8382 tcph = (struct tcphdr *)*tcp;
8383 *tcp_len = get_l4_pyld_length(ip, tcph);
8384 for (i = 0; i < MAX_LRO_SESSIONS; i++) {
8385 struct lro *l_lro = &ring_data->lro0_n[i];
8386 if (l_lro->in_use) {
8387 if (check_for_socket_match(l_lro, ip, tcph))
8388 continue;
8389 /* Sock pair matched */
8390 *lro = l_lro;
8391
8392 if ((*lro)->tcp_next_seq != ntohl(tcph->seq)) {
8393 DBG_PRINT(INFO_DBG, "%s: Out of sequence. "
8394 "expected 0x%x, actual 0x%x\n",
8395 __func__,
8396 (*lro)->tcp_next_seq,
8397 ntohl(tcph->seq));
8398
8399 swstats->outof_sequence_pkts++;
8400 ret = 2;
8401 break;
8402 }
8403
8404 if (!verify_l3_l4_lro_capable(l_lro, ip, tcph,
8405 *tcp_len))
8406 ret = 1; /* Aggregate */
8407 else
8408 ret = 2; /* Flush both */
8409 break;
8410 }
8411 }
8412
8413 if (ret == 0) {
8414 /* Before searching for available LRO objects,
8415 * check if the pkt is L3/L4 aggregatable. If not
8416 * don't create new LRO session. Just send this
8417 * packet up.
8418 */
8419 if (verify_l3_l4_lro_capable(NULL, ip, tcph, *tcp_len))
8420 return 5;
8421
8422 for (i = 0; i < MAX_LRO_SESSIONS; i++) {
8423 struct lro *l_lro = &ring_data->lro0_n[i];
8424 if (!(l_lro->in_use)) {
8425 *lro = l_lro;
8426 ret = 3; /* Begin anew */
8427 break;
8428 }
8429 }
8430 }
8431
8432 if (ret == 0) { /* sessions exceeded */
8433 DBG_PRINT(INFO_DBG, "%s: All LRO sessions already in use\n",
8434 __func__);
8435 *lro = NULL;
8436 return ret;
8437 }
8438
8439 switch (ret) {
8440 case 3:
8441 initiate_new_session(*lro, buffer, ip, tcph, *tcp_len,
8442 vlan_tag);
8443 break;
8444 case 2:
8445 update_L3L4_header(sp, *lro);
8446 break;
8447 case 1:
8448 aggregate_new_rx(*lro, ip, tcph, *tcp_len);
8449 if ((*lro)->sg_num == sp->lro_max_aggr_per_sess) {
8450 update_L3L4_header(sp, *lro);
8451 ret = 4; /* Flush the LRO */
8452 }
8453 break;
8454 default:
8455 DBG_PRINT(ERR_DBG, "%s: Don't know, can't say!!\n", __func__);
8456 break;
8457 }
8458
8459 return ret;
8460 }
8461
8462 static void clear_lro_session(struct lro *lro)
8463 {
8464 static u16 lro_struct_size = sizeof(struct lro);
8465
8466 memset(lro, 0, lro_struct_size);
8467 }
8468
8469 static void queue_rx_frame(struct sk_buff *skb, u16 vlan_tag)
8470 {
8471 struct net_device *dev = skb->dev;
8472 struct s2io_nic *sp = netdev_priv(dev);
8473
8474 skb->protocol = eth_type_trans(skb, dev);
8475 if (vlan_tag && sp->vlan_strip_flag)
8476 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
8477 if (sp->config.napi)
8478 netif_receive_skb(skb);
8479 else
8480 netif_rx(skb);
8481 }
8482
8483 static void lro_append_pkt(struct s2io_nic *sp, struct lro *lro,
8484 struct sk_buff *skb, u32 tcp_len)
8485 {
8486 struct sk_buff *first = lro->parent;
8487 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
8488
8489 first->len += tcp_len;
8490 first->data_len = lro->frags_len;
8491 skb_pull(skb, (skb->len - tcp_len));
8492 if (skb_shinfo(first)->frag_list)
8493 lro->last_frag->next = skb;
8494 else
8495 skb_shinfo(first)->frag_list = skb;
8496 first->truesize += skb->truesize;
8497 lro->last_frag = skb;
8498 swstats->clubbed_frms_cnt++;
8499 }
8500
8501 /**
8502 * s2io_io_error_detected - called when PCI error is detected
8503 * @pdev: Pointer to PCI device
8504 * @state: The current pci connection state
8505 *
8506 * This function is called after a PCI bus error affecting
8507 * this device has been detected.
8508 */
8509 static pci_ers_result_t s2io_io_error_detected(struct pci_dev *pdev,
8510 pci_channel_state_t state)
8511 {
8512 struct net_device *netdev = pci_get_drvdata(pdev);
8513 struct s2io_nic *sp = netdev_priv(netdev);
8514
8515 netif_device_detach(netdev);
8516
8517 if (state == pci_channel_io_perm_failure)
8518 return PCI_ERS_RESULT_DISCONNECT;
8519
8520 if (netif_running(netdev)) {
8521 /* Bring down the card, while avoiding PCI I/O */
8522 do_s2io_card_down(sp, 0);
8523 }
8524 pci_disable_device(pdev);
8525
8526 return PCI_ERS_RESULT_NEED_RESET;
8527 }
8528
8529 /**
8530 * s2io_io_slot_reset - called after the pci bus has been reset.
8531 * @pdev: Pointer to PCI device
8532 *
8533 * Restart the card from scratch, as if from a cold-boot.
8534 * At this point, the card has exprienced a hard reset,
8535 * followed by fixups by BIOS, and has its config space
8536 * set up identically to what it was at cold boot.
8537 */
8538 static pci_ers_result_t s2io_io_slot_reset(struct pci_dev *pdev)
8539 {
8540 struct net_device *netdev = pci_get_drvdata(pdev);
8541 struct s2io_nic *sp = netdev_priv(netdev);
8542
8543 if (pci_enable_device(pdev)) {
8544 pr_err("Cannot re-enable PCI device after reset.\n");
8545 return PCI_ERS_RESULT_DISCONNECT;
8546 }
8547
8548 pci_set_master(pdev);
8549 s2io_reset(sp);
8550
8551 return PCI_ERS_RESULT_RECOVERED;
8552 }
8553
8554 /**
8555 * s2io_io_resume - called when traffic can start flowing again.
8556 * @pdev: Pointer to PCI device
8557 *
8558 * This callback is called when the error recovery driver tells
8559 * us that its OK to resume normal operation.
8560 */
8561 static void s2io_io_resume(struct pci_dev *pdev)
8562 {
8563 struct net_device *netdev = pci_get_drvdata(pdev);
8564 struct s2io_nic *sp = netdev_priv(netdev);
8565
8566 if (netif_running(netdev)) {
8567 if (s2io_card_up(sp)) {
8568 pr_err("Can't bring device back up after reset.\n");
8569 return;
8570 }
8571
8572 if (s2io_set_mac_addr(netdev, netdev->dev_addr) == FAILURE) {
8573 s2io_card_down(sp);
8574 pr_err("Can't restore mac addr after reset.\n");
8575 return;
8576 }
8577 }
8578
8579 netif_device_attach(netdev);
8580 netif_tx_wake_all_queues(netdev);
8581 }
Linux with added FPC-III support