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Merge tag 'drm/tegra/for-5.7-fixes' of git://anongit.freedesktop.org/tegra/linux...
[thirdparty/linux.git] / drivers / net / ethernet / neterion / s2io.c
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/io-64-nonatomic-lo-hi.h>
79 #include <linux/slab.h>
80 #include <linux/prefetch.h>
81 #include <net/tcp.h>
82 #include <net/checksum.h>
83
84 #include <asm/div64.h>
85 #include <asm/irq.h>
86
87 /* local include */
88 #include "s2io.h"
89 #include "s2io-regs.h"
90
91 #define DRV_VERSION "2.0.26.28"
92
93 /* S2io Driver name & version. */
94 static const char s2io_driver_name[] = "Neterion";
95 static const char s2io_driver_version[] = DRV_VERSION;
96
97 static const int rxd_size[2] = {32, 48};
98 static const int rxd_count[2] = {127, 85};
99
100 static inline int RXD_IS_UP2DT(struct RxD_t *rxdp)
101 {
102 int ret;
103
104 ret = ((!(rxdp->Control_1 & RXD_OWN_XENA)) &&
105 (GET_RXD_MARKER(rxdp->Control_2) != THE_RXD_MARK));
106
107 return ret;
108 }
109
110 /*
111 * Cards with following subsystem_id have a link state indication
112 * problem, 600B, 600C, 600D, 640B, 640C and 640D.
113 * macro below identifies these cards given the subsystem_id.
114 */
115 #define CARDS_WITH_FAULTY_LINK_INDICATORS(dev_type, subid) \
116 (dev_type == XFRAME_I_DEVICE) ? \
117 ((((subid >= 0x600B) && (subid <= 0x600D)) || \
118 ((subid >= 0x640B) && (subid <= 0x640D))) ? 1 : 0) : 0
119
120 #define LINK_IS_UP(val64) (!(val64 & (ADAPTER_STATUS_RMAC_REMOTE_FAULT | \
121 ADAPTER_STATUS_RMAC_LOCAL_FAULT)))
122
123 static inline int is_s2io_card_up(const struct s2io_nic *sp)
124 {
125 return test_bit(__S2IO_STATE_CARD_UP, &sp->state);
126 }
127
128 /* Ethtool related variables and Macros. */
129 static const char s2io_gstrings[][ETH_GSTRING_LEN] = {
130 "Register test\t(offline)",
131 "Eeprom test\t(offline)",
132 "Link test\t(online)",
133 "RLDRAM test\t(offline)",
134 "BIST Test\t(offline)"
135 };
136
137 static const char ethtool_xena_stats_keys[][ETH_GSTRING_LEN] = {
138 {"tmac_frms"},
139 {"tmac_data_octets"},
140 {"tmac_drop_frms"},
141 {"tmac_mcst_frms"},
142 {"tmac_bcst_frms"},
143 {"tmac_pause_ctrl_frms"},
144 {"tmac_ttl_octets"},
145 {"tmac_ucst_frms"},
146 {"tmac_nucst_frms"},
147 {"tmac_any_err_frms"},
148 {"tmac_ttl_less_fb_octets"},
149 {"tmac_vld_ip_octets"},
150 {"tmac_vld_ip"},
151 {"tmac_drop_ip"},
152 {"tmac_icmp"},
153 {"tmac_rst_tcp"},
154 {"tmac_tcp"},
155 {"tmac_udp"},
156 {"rmac_vld_frms"},
157 {"rmac_data_octets"},
158 {"rmac_fcs_err_frms"},
159 {"rmac_drop_frms"},
160 {"rmac_vld_mcst_frms"},
161 {"rmac_vld_bcst_frms"},
162 {"rmac_in_rng_len_err_frms"},
163 {"rmac_out_rng_len_err_frms"},
164 {"rmac_long_frms"},
165 {"rmac_pause_ctrl_frms"},
166 {"rmac_unsup_ctrl_frms"},
167 {"rmac_ttl_octets"},
168 {"rmac_accepted_ucst_frms"},
169 {"rmac_accepted_nucst_frms"},
170 {"rmac_discarded_frms"},
171 {"rmac_drop_events"},
172 {"rmac_ttl_less_fb_octets"},
173 {"rmac_ttl_frms"},
174 {"rmac_usized_frms"},
175 {"rmac_osized_frms"},
176 {"rmac_frag_frms"},
177 {"rmac_jabber_frms"},
178 {"rmac_ttl_64_frms"},
179 {"rmac_ttl_65_127_frms"},
180 {"rmac_ttl_128_255_frms"},
181 {"rmac_ttl_256_511_frms"},
182 {"rmac_ttl_512_1023_frms"},
183 {"rmac_ttl_1024_1518_frms"},
184 {"rmac_ip"},
185 {"rmac_ip_octets"},
186 {"rmac_hdr_err_ip"},
187 {"rmac_drop_ip"},
188 {"rmac_icmp"},
189 {"rmac_tcp"},
190 {"rmac_udp"},
191 {"rmac_err_drp_udp"},
192 {"rmac_xgmii_err_sym"},
193 {"rmac_frms_q0"},
194 {"rmac_frms_q1"},
195 {"rmac_frms_q2"},
196 {"rmac_frms_q3"},
197 {"rmac_frms_q4"},
198 {"rmac_frms_q5"},
199 {"rmac_frms_q6"},
200 {"rmac_frms_q7"},
201 {"rmac_full_q0"},
202 {"rmac_full_q1"},
203 {"rmac_full_q2"},
204 {"rmac_full_q3"},
205 {"rmac_full_q4"},
206 {"rmac_full_q5"},
207 {"rmac_full_q6"},
208 {"rmac_full_q7"},
209 {"rmac_pause_cnt"},
210 {"rmac_xgmii_data_err_cnt"},
211 {"rmac_xgmii_ctrl_err_cnt"},
212 {"rmac_accepted_ip"},
213 {"rmac_err_tcp"},
214 {"rd_req_cnt"},
215 {"new_rd_req_cnt"},
216 {"new_rd_req_rtry_cnt"},
217 {"rd_rtry_cnt"},
218 {"wr_rtry_rd_ack_cnt"},
219 {"wr_req_cnt"},
220 {"new_wr_req_cnt"},
221 {"new_wr_req_rtry_cnt"},
222 {"wr_rtry_cnt"},
223 {"wr_disc_cnt"},
224 {"rd_rtry_wr_ack_cnt"},
225 {"txp_wr_cnt"},
226 {"txd_rd_cnt"},
227 {"txd_wr_cnt"},
228 {"rxd_rd_cnt"},
229 {"rxd_wr_cnt"},
230 {"txf_rd_cnt"},
231 {"rxf_wr_cnt"}
232 };
233
234 static const char ethtool_enhanced_stats_keys[][ETH_GSTRING_LEN] = {
235 {"rmac_ttl_1519_4095_frms"},
236 {"rmac_ttl_4096_8191_frms"},
237 {"rmac_ttl_8192_max_frms"},
238 {"rmac_ttl_gt_max_frms"},
239 {"rmac_osized_alt_frms"},
240 {"rmac_jabber_alt_frms"},
241 {"rmac_gt_max_alt_frms"},
242 {"rmac_vlan_frms"},
243 {"rmac_len_discard"},
244 {"rmac_fcs_discard"},
245 {"rmac_pf_discard"},
246 {"rmac_da_discard"},
247 {"rmac_red_discard"},
248 {"rmac_rts_discard"},
249 {"rmac_ingm_full_discard"},
250 {"link_fault_cnt"}
251 };
252
253 static const char ethtool_driver_stats_keys[][ETH_GSTRING_LEN] = {
254 {"\n DRIVER STATISTICS"},
255 {"single_bit_ecc_errs"},
256 {"double_bit_ecc_errs"},
257 {"parity_err_cnt"},
258 {"serious_err_cnt"},
259 {"soft_reset_cnt"},
260 {"fifo_full_cnt"},
261 {"ring_0_full_cnt"},
262 {"ring_1_full_cnt"},
263 {"ring_2_full_cnt"},
264 {"ring_3_full_cnt"},
265 {"ring_4_full_cnt"},
266 {"ring_5_full_cnt"},
267 {"ring_6_full_cnt"},
268 {"ring_7_full_cnt"},
269 {"alarm_transceiver_temp_high"},
270 {"alarm_transceiver_temp_low"},
271 {"alarm_laser_bias_current_high"},
272 {"alarm_laser_bias_current_low"},
273 {"alarm_laser_output_power_high"},
274 {"alarm_laser_output_power_low"},
275 {"warn_transceiver_temp_high"},
276 {"warn_transceiver_temp_low"},
277 {"warn_laser_bias_current_high"},
278 {"warn_laser_bias_current_low"},
279 {"warn_laser_output_power_high"},
280 {"warn_laser_output_power_low"},
281 {"lro_aggregated_pkts"},
282 {"lro_flush_both_count"},
283 {"lro_out_of_sequence_pkts"},
284 {"lro_flush_due_to_max_pkts"},
285 {"lro_avg_aggr_pkts"},
286 {"mem_alloc_fail_cnt"},
287 {"pci_map_fail_cnt"},
288 {"watchdog_timer_cnt"},
289 {"mem_allocated"},
290 {"mem_freed"},
291 {"link_up_cnt"},
292 {"link_down_cnt"},
293 {"link_up_time"},
294 {"link_down_time"},
295 {"tx_tcode_buf_abort_cnt"},
296 {"tx_tcode_desc_abort_cnt"},
297 {"tx_tcode_parity_err_cnt"},
298 {"tx_tcode_link_loss_cnt"},
299 {"tx_tcode_list_proc_err_cnt"},
300 {"rx_tcode_parity_err_cnt"},
301 {"rx_tcode_abort_cnt"},
302 {"rx_tcode_parity_abort_cnt"},
303 {"rx_tcode_rda_fail_cnt"},
304 {"rx_tcode_unkn_prot_cnt"},
305 {"rx_tcode_fcs_err_cnt"},
306 {"rx_tcode_buf_size_err_cnt"},
307 {"rx_tcode_rxd_corrupt_cnt"},
308 {"rx_tcode_unkn_err_cnt"},
309 {"tda_err_cnt"},
310 {"pfc_err_cnt"},
311 {"pcc_err_cnt"},
312 {"tti_err_cnt"},
313 {"tpa_err_cnt"},
314 {"sm_err_cnt"},
315 {"lso_err_cnt"},
316 {"mac_tmac_err_cnt"},
317 {"mac_rmac_err_cnt"},
318 {"xgxs_txgxs_err_cnt"},
319 {"xgxs_rxgxs_err_cnt"},
320 {"rc_err_cnt"},
321 {"prc_pcix_err_cnt"},
322 {"rpa_err_cnt"},
323 {"rda_err_cnt"},
324 {"rti_err_cnt"},
325 {"mc_err_cnt"}
326 };
327
328 #define S2IO_XENA_STAT_LEN ARRAY_SIZE(ethtool_xena_stats_keys)
329 #define S2IO_ENHANCED_STAT_LEN ARRAY_SIZE(ethtool_enhanced_stats_keys)
330 #define S2IO_DRIVER_STAT_LEN ARRAY_SIZE(ethtool_driver_stats_keys)
331
332 #define XFRAME_I_STAT_LEN (S2IO_XENA_STAT_LEN + S2IO_DRIVER_STAT_LEN)
333 #define XFRAME_II_STAT_LEN (XFRAME_I_STAT_LEN + S2IO_ENHANCED_STAT_LEN)
334
335 #define XFRAME_I_STAT_STRINGS_LEN (XFRAME_I_STAT_LEN * ETH_GSTRING_LEN)
336 #define XFRAME_II_STAT_STRINGS_LEN (XFRAME_II_STAT_LEN * ETH_GSTRING_LEN)
337
338 #define S2IO_TEST_LEN ARRAY_SIZE(s2io_gstrings)
339 #define S2IO_STRINGS_LEN (S2IO_TEST_LEN * ETH_GSTRING_LEN)
340
341 /* copy mac addr to def_mac_addr array */
342 static void do_s2io_copy_mac_addr(struct s2io_nic *sp, int offset, u64 mac_addr)
343 {
344 sp->def_mac_addr[offset].mac_addr[5] = (u8) (mac_addr);
345 sp->def_mac_addr[offset].mac_addr[4] = (u8) (mac_addr >> 8);
346 sp->def_mac_addr[offset].mac_addr[3] = (u8) (mac_addr >> 16);
347 sp->def_mac_addr[offset].mac_addr[2] = (u8) (mac_addr >> 24);
348 sp->def_mac_addr[offset].mac_addr[1] = (u8) (mac_addr >> 32);
349 sp->def_mac_addr[offset].mac_addr[0] = (u8) (mac_addr >> 40);
350 }
351
352 /*
353 * Constants to be programmed into the Xena's registers, to configure
354 * the XAUI.
355 */
356
357 #define END_SIGN 0x0
358 static const u64 herc_act_dtx_cfg[] = {
359 /* Set address */
360 0x8000051536750000ULL, 0x80000515367500E0ULL,
361 /* Write data */
362 0x8000051536750004ULL, 0x80000515367500E4ULL,
363 /* Set address */
364 0x80010515003F0000ULL, 0x80010515003F00E0ULL,
365 /* Write data */
366 0x80010515003F0004ULL, 0x80010515003F00E4ULL,
367 /* Set address */
368 0x801205150D440000ULL, 0x801205150D4400E0ULL,
369 /* Write data */
370 0x801205150D440004ULL, 0x801205150D4400E4ULL,
371 /* Set address */
372 0x80020515F2100000ULL, 0x80020515F21000E0ULL,
373 /* Write data */
374 0x80020515F2100004ULL, 0x80020515F21000E4ULL,
375 /* Done */
376 END_SIGN
377 };
378
379 static const u64 xena_dtx_cfg[] = {
380 /* Set address */
381 0x8000051500000000ULL, 0x80000515000000E0ULL,
382 /* Write data */
383 0x80000515D9350004ULL, 0x80000515D93500E4ULL,
384 /* Set address */
385 0x8001051500000000ULL, 0x80010515000000E0ULL,
386 /* Write data */
387 0x80010515001E0004ULL, 0x80010515001E00E4ULL,
388 /* Set address */
389 0x8002051500000000ULL, 0x80020515000000E0ULL,
390 /* Write data */
391 0x80020515F2100004ULL, 0x80020515F21000E4ULL,
392 END_SIGN
393 };
394
395 /*
396 * Constants for Fixing the MacAddress problem seen mostly on
397 * Alpha machines.
398 */
399 static const u64 fix_mac[] = {
400 0x0060000000000000ULL, 0x0060600000000000ULL,
401 0x0040600000000000ULL, 0x0000600000000000ULL,
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, 0x0060600000000000ULL,
412 0x0020600000000000ULL, 0x0000600000000000ULL,
413 0x0040600000000000ULL, 0x0060600000000000ULL,
414 END_SIGN
415 };
416
417 MODULE_LICENSE("GPL");
418 MODULE_VERSION(DRV_VERSION);
419
420
421 /* Module Loadable parameters. */
422 S2IO_PARM_INT(tx_fifo_num, FIFO_DEFAULT_NUM);
423 S2IO_PARM_INT(rx_ring_num, 1);
424 S2IO_PARM_INT(multiq, 0);
425 S2IO_PARM_INT(rx_ring_mode, 1);
426 S2IO_PARM_INT(use_continuous_tx_intrs, 1);
427 S2IO_PARM_INT(rmac_pause_time, 0x100);
428 S2IO_PARM_INT(mc_pause_threshold_q0q3, 187);
429 S2IO_PARM_INT(mc_pause_threshold_q4q7, 187);
430 S2IO_PARM_INT(shared_splits, 0);
431 S2IO_PARM_INT(tmac_util_period, 5);
432 S2IO_PARM_INT(rmac_util_period, 5);
433 S2IO_PARM_INT(l3l4hdr_size, 128);
434 /* 0 is no steering, 1 is Priority steering, 2 is Default steering */
435 S2IO_PARM_INT(tx_steering_type, TX_DEFAULT_STEERING);
436 /* Frequency of Rx desc syncs expressed as power of 2 */
437 S2IO_PARM_INT(rxsync_frequency, 3);
438 /* Interrupt type. Values can be 0(INTA), 2(MSI_X) */
439 S2IO_PARM_INT(intr_type, 2);
440 /* Large receive offload feature */
441
442 /* Max pkts to be aggregated by LRO at one time. If not specified,
443 * aggregation happens until we hit max IP pkt size(64K)
444 */
445 S2IO_PARM_INT(lro_max_pkts, 0xFFFF);
446 S2IO_PARM_INT(indicate_max_pkts, 0);
447
448 S2IO_PARM_INT(napi, 1);
449 S2IO_PARM_INT(vlan_tag_strip, NO_STRIP_IN_PROMISC);
450
451 static unsigned int tx_fifo_len[MAX_TX_FIFOS] =
452 {DEFAULT_FIFO_0_LEN, [1 ...(MAX_TX_FIFOS - 1)] = DEFAULT_FIFO_1_7_LEN};
453 static unsigned int rx_ring_sz[MAX_RX_RINGS] =
454 {[0 ...(MAX_RX_RINGS - 1)] = SMALL_BLK_CNT};
455 static unsigned int rts_frm_len[MAX_RX_RINGS] =
456 {[0 ...(MAX_RX_RINGS - 1)] = 0 };
457
458 module_param_array(tx_fifo_len, uint, NULL, 0);
459 module_param_array(rx_ring_sz, uint, NULL, 0);
460 module_param_array(rts_frm_len, uint, NULL, 0);
461
462 /*
463 * S2IO device table.
464 * This table lists all the devices that this driver supports.
465 */
466 static const struct pci_device_id s2io_tbl[] = {
467 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_S2IO_WIN,
468 PCI_ANY_ID, PCI_ANY_ID},
469 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_S2IO_UNI,
470 PCI_ANY_ID, PCI_ANY_ID},
471 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_HERC_WIN,
472 PCI_ANY_ID, PCI_ANY_ID},
473 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_HERC_UNI,
474 PCI_ANY_ID, PCI_ANY_ID},
475 {0,}
476 };
477
478 MODULE_DEVICE_TABLE(pci, s2io_tbl);
479
480 static const struct pci_error_handlers s2io_err_handler = {
481 .error_detected = s2io_io_error_detected,
482 .slot_reset = s2io_io_slot_reset,
483 .resume = s2io_io_resume,
484 };
485
486 static struct pci_driver s2io_driver = {
487 .name = "S2IO",
488 .id_table = s2io_tbl,
489 .probe = s2io_init_nic,
490 .remove = s2io_rem_nic,
491 .err_handler = &s2io_err_handler,
492 };
493
494 /* A simplifier macro used both by init and free shared_mem Fns(). */
495 #define TXD_MEM_PAGE_CNT(len, per_each) DIV_ROUND_UP(len, per_each)
496
497 /* netqueue manipulation helper functions */
498 static inline void s2io_stop_all_tx_queue(struct s2io_nic *sp)
499 {
500 if (!sp->config.multiq) {
501 int i;
502
503 for (i = 0; i < sp->config.tx_fifo_num; i++)
504 sp->mac_control.fifos[i].queue_state = FIFO_QUEUE_STOP;
505 }
506 netif_tx_stop_all_queues(sp->dev);
507 }
508
509 static inline void s2io_stop_tx_queue(struct s2io_nic *sp, int fifo_no)
510 {
511 if (!sp->config.multiq)
512 sp->mac_control.fifos[fifo_no].queue_state =
513 FIFO_QUEUE_STOP;
514
515 netif_tx_stop_all_queues(sp->dev);
516 }
517
518 static inline void s2io_start_all_tx_queue(struct s2io_nic *sp)
519 {
520 if (!sp->config.multiq) {
521 int i;
522
523 for (i = 0; i < sp->config.tx_fifo_num; i++)
524 sp->mac_control.fifos[i].queue_state = FIFO_QUEUE_START;
525 }
526 netif_tx_start_all_queues(sp->dev);
527 }
528
529 static inline void s2io_wake_all_tx_queue(struct s2io_nic *sp)
530 {
531 if (!sp->config.multiq) {
532 int i;
533
534 for (i = 0; i < sp->config.tx_fifo_num; i++)
535 sp->mac_control.fifos[i].queue_state = FIFO_QUEUE_START;
536 }
537 netif_tx_wake_all_queues(sp->dev);
538 }
539
540 static inline void s2io_wake_tx_queue(
541 struct fifo_info *fifo, int cnt, u8 multiq)
542 {
543
544 if (multiq) {
545 if (cnt && __netif_subqueue_stopped(fifo->dev, fifo->fifo_no))
546 netif_wake_subqueue(fifo->dev, fifo->fifo_no);
547 } else if (cnt && (fifo->queue_state == FIFO_QUEUE_STOP)) {
548 if (netif_queue_stopped(fifo->dev)) {
549 fifo->queue_state = FIFO_QUEUE_START;
550 netif_wake_queue(fifo->dev);
551 }
552 }
553 }
554
555 /**
556 * init_shared_mem - Allocation and Initialization of Memory
557 * @nic: Device private variable.
558 * Description: The function allocates all the memory areas shared
559 * between the NIC and the driver. This includes Tx descriptors,
560 * Rx descriptors and the statistics block.
561 */
562
563 static int init_shared_mem(struct s2io_nic *nic)
564 {
565 u32 size;
566 void *tmp_v_addr, *tmp_v_addr_next;
567 dma_addr_t tmp_p_addr, tmp_p_addr_next;
568 struct RxD_block *pre_rxd_blk = NULL;
569 int i, j, blk_cnt;
570 int lst_size, lst_per_page;
571 struct net_device *dev = nic->dev;
572 unsigned long tmp;
573 struct buffAdd *ba;
574 struct config_param *config = &nic->config;
575 struct mac_info *mac_control = &nic->mac_control;
576 unsigned long long mem_allocated = 0;
577
578 /* Allocation and initialization of TXDLs in FIFOs */
579 size = 0;
580 for (i = 0; i < config->tx_fifo_num; i++) {
581 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
582
583 size += tx_cfg->fifo_len;
584 }
585 if (size > MAX_AVAILABLE_TXDS) {
586 DBG_PRINT(ERR_DBG,
587 "Too many TxDs requested: %d, max supported: %d\n",
588 size, MAX_AVAILABLE_TXDS);
589 return -EINVAL;
590 }
591
592 size = 0;
593 for (i = 0; i < config->tx_fifo_num; i++) {
594 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
595
596 size = tx_cfg->fifo_len;
597 /*
598 * Legal values are from 2 to 8192
599 */
600 if (size < 2) {
601 DBG_PRINT(ERR_DBG, "Fifo %d: Invalid length (%d) - "
602 "Valid lengths are 2 through 8192\n",
603 i, size);
604 return -EINVAL;
605 }
606 }
607
608 lst_size = (sizeof(struct TxD) * config->max_txds);
609 lst_per_page = PAGE_SIZE / lst_size;
610
611 for (i = 0; i < config->tx_fifo_num; i++) {
612 struct fifo_info *fifo = &mac_control->fifos[i];
613 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
614 int fifo_len = tx_cfg->fifo_len;
615 int list_holder_size = fifo_len * sizeof(struct list_info_hold);
616
617 fifo->list_info = kzalloc(list_holder_size, GFP_KERNEL);
618 if (!fifo->list_info) {
619 DBG_PRINT(INFO_DBG, "Malloc failed for list_info\n");
620 return -ENOMEM;
621 }
622 mem_allocated += list_holder_size;
623 }
624 for (i = 0; i < config->tx_fifo_num; i++) {
625 int page_num = TXD_MEM_PAGE_CNT(config->tx_cfg[i].fifo_len,
626 lst_per_page);
627 struct fifo_info *fifo = &mac_control->fifos[i];
628 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
629
630 fifo->tx_curr_put_info.offset = 0;
631 fifo->tx_curr_put_info.fifo_len = tx_cfg->fifo_len - 1;
632 fifo->tx_curr_get_info.offset = 0;
633 fifo->tx_curr_get_info.fifo_len = tx_cfg->fifo_len - 1;
634 fifo->fifo_no = i;
635 fifo->nic = nic;
636 fifo->max_txds = MAX_SKB_FRAGS + 2;
637 fifo->dev = dev;
638
639 for (j = 0; j < page_num; j++) {
640 int k = 0;
641 dma_addr_t tmp_p;
642 void *tmp_v;
643 tmp_v = pci_alloc_consistent(nic->pdev,
644 PAGE_SIZE, &tmp_p);
645 if (!tmp_v) {
646 DBG_PRINT(INFO_DBG,
647 "pci_alloc_consistent failed for TxDL\n");
648 return -ENOMEM;
649 }
650 /* If we got a zero DMA address(can happen on
651 * certain platforms like PPC), reallocate.
652 * Store virtual address of page we don't want,
653 * to be freed later.
654 */
655 if (!tmp_p) {
656 mac_control->zerodma_virt_addr = tmp_v;
657 DBG_PRINT(INIT_DBG,
658 "%s: Zero DMA address for TxDL. "
659 "Virtual address %p\n",
660 dev->name, tmp_v);
661 tmp_v = pci_alloc_consistent(nic->pdev,
662 PAGE_SIZE, &tmp_p);
663 if (!tmp_v) {
664 DBG_PRINT(INFO_DBG,
665 "pci_alloc_consistent failed for TxDL\n");
666 return -ENOMEM;
667 }
668 mem_allocated += PAGE_SIZE;
669 }
670 while (k < lst_per_page) {
671 int l = (j * lst_per_page) + k;
672 if (l == tx_cfg->fifo_len)
673 break;
674 fifo->list_info[l].list_virt_addr =
675 tmp_v + (k * lst_size);
676 fifo->list_info[l].list_phy_addr =
677 tmp_p + (k * lst_size);
678 k++;
679 }
680 }
681 }
682
683 for (i = 0; i < config->tx_fifo_num; i++) {
684 struct fifo_info *fifo = &mac_control->fifos[i];
685 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
686
687 size = tx_cfg->fifo_len;
688 fifo->ufo_in_band_v = kcalloc(size, sizeof(u64), GFP_KERNEL);
689 if (!fifo->ufo_in_band_v)
690 return -ENOMEM;
691 mem_allocated += (size * sizeof(u64));
692 }
693
694 /* Allocation and initialization of RXDs in Rings */
695 size = 0;
696 for (i = 0; i < config->rx_ring_num; i++) {
697 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
698 struct ring_info *ring = &mac_control->rings[i];
699
700 if (rx_cfg->num_rxd % (rxd_count[nic->rxd_mode] + 1)) {
701 DBG_PRINT(ERR_DBG, "%s: Ring%d RxD count is not a "
702 "multiple of RxDs per Block\n",
703 dev->name, i);
704 return FAILURE;
705 }
706 size += rx_cfg->num_rxd;
707 ring->block_count = rx_cfg->num_rxd /
708 (rxd_count[nic->rxd_mode] + 1);
709 ring->pkt_cnt = rx_cfg->num_rxd - ring->block_count;
710 }
711 if (nic->rxd_mode == RXD_MODE_1)
712 size = (size * (sizeof(struct RxD1)));
713 else
714 size = (size * (sizeof(struct RxD3)));
715
716 for (i = 0; i < config->rx_ring_num; i++) {
717 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
718 struct ring_info *ring = &mac_control->rings[i];
719
720 ring->rx_curr_get_info.block_index = 0;
721 ring->rx_curr_get_info.offset = 0;
722 ring->rx_curr_get_info.ring_len = rx_cfg->num_rxd - 1;
723 ring->rx_curr_put_info.block_index = 0;
724 ring->rx_curr_put_info.offset = 0;
725 ring->rx_curr_put_info.ring_len = rx_cfg->num_rxd - 1;
726 ring->nic = nic;
727 ring->ring_no = i;
728
729 blk_cnt = rx_cfg->num_rxd / (rxd_count[nic->rxd_mode] + 1);
730 /* Allocating all the Rx blocks */
731 for (j = 0; j < blk_cnt; j++) {
732 struct rx_block_info *rx_blocks;
733 int l;
734
735 rx_blocks = &ring->rx_blocks[j];
736 size = SIZE_OF_BLOCK; /* size is always page size */
737 tmp_v_addr = pci_alloc_consistent(nic->pdev, size,
738 &tmp_p_addr);
739 if (tmp_v_addr == NULL) {
740 /*
741 * In case of failure, free_shared_mem()
742 * is called, which should free any
743 * memory that was alloced till the
744 * failure happened.
745 */
746 rx_blocks->block_virt_addr = tmp_v_addr;
747 return -ENOMEM;
748 }
749 mem_allocated += 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_consume_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 }
3686 }
3687
3688 static void store_xmsi_data(struct s2io_nic *nic)
3689 {
3690 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3691 u64 val64, addr, data;
3692 int i, msix_index;
3693
3694 if (nic->device_type == XFRAME_I_DEVICE)
3695 return;
3696
3697 /* Store and display */
3698 for (i = 0; i < MAX_REQUESTED_MSI_X; i++) {
3699 msix_index = (i) ? ((i-1) * 8 + 1) : 0;
3700 val64 = (s2BIT(15) | vBIT(msix_index, 26, 6));
3701 writeq(val64, &bar0->xmsi_access);
3702 if (wait_for_msix_trans(nic, msix_index)) {
3703 DBG_PRINT(ERR_DBG, "%s: index: %d failed\n",
3704 __func__, msix_index);
3705 continue;
3706 }
3707 addr = readq(&bar0->xmsi_address);
3708 data = readq(&bar0->xmsi_data);
3709 if (addr && data) {
3710 nic->msix_info[i].addr = addr;
3711 nic->msix_info[i].data = data;
3712 }
3713 }
3714 }
3715
3716 static int s2io_enable_msi_x(struct s2io_nic *nic)
3717 {
3718 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3719 u64 rx_mat;
3720 u16 msi_control; /* Temp variable */
3721 int ret, i, j, msix_indx = 1;
3722 int size;
3723 struct stat_block *stats = nic->mac_control.stats_info;
3724 struct swStat *swstats = &stats->sw_stat;
3725
3726 size = nic->num_entries * sizeof(struct msix_entry);
3727 nic->entries = kzalloc(size, GFP_KERNEL);
3728 if (!nic->entries) {
3729 DBG_PRINT(INFO_DBG, "%s: Memory allocation failed\n",
3730 __func__);
3731 swstats->mem_alloc_fail_cnt++;
3732 return -ENOMEM;
3733 }
3734 swstats->mem_allocated += size;
3735
3736 size = nic->num_entries * sizeof(struct s2io_msix_entry);
3737 nic->s2io_entries = kzalloc(size, GFP_KERNEL);
3738 if (!nic->s2io_entries) {
3739 DBG_PRINT(INFO_DBG, "%s: Memory allocation failed\n",
3740 __func__);
3741 swstats->mem_alloc_fail_cnt++;
3742 kfree(nic->entries);
3743 swstats->mem_freed
3744 += (nic->num_entries * sizeof(struct msix_entry));
3745 return -ENOMEM;
3746 }
3747 swstats->mem_allocated += size;
3748
3749 nic->entries[0].entry = 0;
3750 nic->s2io_entries[0].entry = 0;
3751 nic->s2io_entries[0].in_use = MSIX_FLG;
3752 nic->s2io_entries[0].type = MSIX_ALARM_TYPE;
3753 nic->s2io_entries[0].arg = &nic->mac_control.fifos;
3754
3755 for (i = 1; i < nic->num_entries; i++) {
3756 nic->entries[i].entry = ((i - 1) * 8) + 1;
3757 nic->s2io_entries[i].entry = ((i - 1) * 8) + 1;
3758 nic->s2io_entries[i].arg = NULL;
3759 nic->s2io_entries[i].in_use = 0;
3760 }
3761
3762 rx_mat = readq(&bar0->rx_mat);
3763 for (j = 0; j < nic->config.rx_ring_num; j++) {
3764 rx_mat |= RX_MAT_SET(j, msix_indx);
3765 nic->s2io_entries[j+1].arg = &nic->mac_control.rings[j];
3766 nic->s2io_entries[j+1].type = MSIX_RING_TYPE;
3767 nic->s2io_entries[j+1].in_use = MSIX_FLG;
3768 msix_indx += 8;
3769 }
3770 writeq(rx_mat, &bar0->rx_mat);
3771 readq(&bar0->rx_mat);
3772
3773 ret = pci_enable_msix_range(nic->pdev, nic->entries,
3774 nic->num_entries, nic->num_entries);
3775 /* We fail init if error or we get less vectors than min required */
3776 if (ret < 0) {
3777 DBG_PRINT(ERR_DBG, "Enabling MSI-X failed\n");
3778 kfree(nic->entries);
3779 swstats->mem_freed += nic->num_entries *
3780 sizeof(struct msix_entry);
3781 kfree(nic->s2io_entries);
3782 swstats->mem_freed += nic->num_entries *
3783 sizeof(struct s2io_msix_entry);
3784 nic->entries = NULL;
3785 nic->s2io_entries = NULL;
3786 return -ENOMEM;
3787 }
3788
3789 /*
3790 * To enable MSI-X, MSI also needs to be enabled, due to a bug
3791 * in the herc NIC. (Temp change, needs to be removed later)
3792 */
3793 pci_read_config_word(nic->pdev, 0x42, &msi_control);
3794 msi_control |= 0x1; /* Enable MSI */
3795 pci_write_config_word(nic->pdev, 0x42, msi_control);
3796
3797 return 0;
3798 }
3799
3800 /* Handle software interrupt used during MSI(X) test */
3801 static irqreturn_t s2io_test_intr(int irq, void *dev_id)
3802 {
3803 struct s2io_nic *sp = dev_id;
3804
3805 sp->msi_detected = 1;
3806 wake_up(&sp->msi_wait);
3807
3808 return IRQ_HANDLED;
3809 }
3810
3811 /* Test interrupt path by forcing a a software IRQ */
3812 static int s2io_test_msi(struct s2io_nic *sp)
3813 {
3814 struct pci_dev *pdev = sp->pdev;
3815 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3816 int err;
3817 u64 val64, saved64;
3818
3819 err = request_irq(sp->entries[1].vector, s2io_test_intr, 0,
3820 sp->name, sp);
3821 if (err) {
3822 DBG_PRINT(ERR_DBG, "%s: PCI %s: cannot assign irq %d\n",
3823 sp->dev->name, pci_name(pdev), pdev->irq);
3824 return err;
3825 }
3826
3827 init_waitqueue_head(&sp->msi_wait);
3828 sp->msi_detected = 0;
3829
3830 saved64 = val64 = readq(&bar0->scheduled_int_ctrl);
3831 val64 |= SCHED_INT_CTRL_ONE_SHOT;
3832 val64 |= SCHED_INT_CTRL_TIMER_EN;
3833 val64 |= SCHED_INT_CTRL_INT2MSI(1);
3834 writeq(val64, &bar0->scheduled_int_ctrl);
3835
3836 wait_event_timeout(sp->msi_wait, sp->msi_detected, HZ/10);
3837
3838 if (!sp->msi_detected) {
3839 /* MSI(X) test failed, go back to INTx mode */
3840 DBG_PRINT(ERR_DBG, "%s: PCI %s: No interrupt was generated "
3841 "using MSI(X) during test\n",
3842 sp->dev->name, pci_name(pdev));
3843
3844 err = -EOPNOTSUPP;
3845 }
3846
3847 free_irq(sp->entries[1].vector, sp);
3848
3849 writeq(saved64, &bar0->scheduled_int_ctrl);
3850
3851 return err;
3852 }
3853
3854 static void remove_msix_isr(struct s2io_nic *sp)
3855 {
3856 int i;
3857 u16 msi_control;
3858
3859 for (i = 0; i < sp->num_entries; i++) {
3860 if (sp->s2io_entries[i].in_use == MSIX_REGISTERED_SUCCESS) {
3861 int vector = sp->entries[i].vector;
3862 void *arg = sp->s2io_entries[i].arg;
3863 free_irq(vector, arg);
3864 }
3865 }
3866
3867 kfree(sp->entries);
3868 kfree(sp->s2io_entries);
3869 sp->entries = NULL;
3870 sp->s2io_entries = NULL;
3871
3872 pci_read_config_word(sp->pdev, 0x42, &msi_control);
3873 msi_control &= 0xFFFE; /* Disable MSI */
3874 pci_write_config_word(sp->pdev, 0x42, msi_control);
3875
3876 pci_disable_msix(sp->pdev);
3877 }
3878
3879 static void remove_inta_isr(struct s2io_nic *sp)
3880 {
3881 free_irq(sp->pdev->irq, sp->dev);
3882 }
3883
3884 /* ********************************************************* *
3885 * Functions defined below concern the OS part of the driver *
3886 * ********************************************************* */
3887
3888 /**
3889 * s2io_open - open entry point of the driver
3890 * @dev : pointer to the device structure.
3891 * Description:
3892 * This function is the open entry point of the driver. It mainly calls a
3893 * function to allocate Rx buffers and inserts them into the buffer
3894 * descriptors and then enables the Rx part of the NIC.
3895 * Return value:
3896 * 0 on success and an appropriate (-)ve integer as defined in errno.h
3897 * file on failure.
3898 */
3899
3900 static int s2io_open(struct net_device *dev)
3901 {
3902 struct s2io_nic *sp = netdev_priv(dev);
3903 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
3904 int err = 0;
3905
3906 /*
3907 * Make sure you have link off by default every time
3908 * Nic is initialized
3909 */
3910 netif_carrier_off(dev);
3911 sp->last_link_state = 0;
3912
3913 /* Initialize H/W and enable interrupts */
3914 err = s2io_card_up(sp);
3915 if (err) {
3916 DBG_PRINT(ERR_DBG, "%s: H/W initialization failed\n",
3917 dev->name);
3918 goto hw_init_failed;
3919 }
3920
3921 if (do_s2io_prog_unicast(dev, dev->dev_addr) == FAILURE) {
3922 DBG_PRINT(ERR_DBG, "Set Mac Address Failed\n");
3923 s2io_card_down(sp);
3924 err = -ENODEV;
3925 goto hw_init_failed;
3926 }
3927 s2io_start_all_tx_queue(sp);
3928 return 0;
3929
3930 hw_init_failed:
3931 if (sp->config.intr_type == MSI_X) {
3932 if (sp->entries) {
3933 kfree(sp->entries);
3934 swstats->mem_freed += sp->num_entries *
3935 sizeof(struct msix_entry);
3936 }
3937 if (sp->s2io_entries) {
3938 kfree(sp->s2io_entries);
3939 swstats->mem_freed += sp->num_entries *
3940 sizeof(struct s2io_msix_entry);
3941 }
3942 }
3943 return err;
3944 }
3945
3946 /**
3947 * s2io_close -close entry point of the driver
3948 * @dev : device pointer.
3949 * Description:
3950 * This is the stop entry point of the driver. It needs to undo exactly
3951 * whatever was done by the open entry point,thus it's usually referred to
3952 * as the close function.Among other things this function mainly stops the
3953 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3954 * Return value:
3955 * 0 on success and an appropriate (-)ve integer as defined in errno.h
3956 * file on failure.
3957 */
3958
3959 static int s2io_close(struct net_device *dev)
3960 {
3961 struct s2io_nic *sp = netdev_priv(dev);
3962 struct config_param *config = &sp->config;
3963 u64 tmp64;
3964 int offset;
3965
3966 /* Return if the device is already closed *
3967 * Can happen when s2io_card_up failed in change_mtu *
3968 */
3969 if (!is_s2io_card_up(sp))
3970 return 0;
3971
3972 s2io_stop_all_tx_queue(sp);
3973 /* delete all populated mac entries */
3974 for (offset = 1; offset < config->max_mc_addr; offset++) {
3975 tmp64 = do_s2io_read_unicast_mc(sp, offset);
3976 if (tmp64 != S2IO_DISABLE_MAC_ENTRY)
3977 do_s2io_delete_unicast_mc(sp, tmp64);
3978 }
3979
3980 s2io_card_down(sp);
3981
3982 return 0;
3983 }
3984
3985 /**
3986 * s2io_xmit - Tx entry point of te driver
3987 * @skb : the socket buffer containing the Tx data.
3988 * @dev : device pointer.
3989 * Description :
3990 * This function is the Tx entry point of the driver. S2IO NIC supports
3991 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
3992 * NOTE: when device can't queue the pkt,just the trans_start variable will
3993 * not be upadted.
3994 * Return value:
3995 * 0 on success & 1 on failure.
3996 */
3997
3998 static netdev_tx_t s2io_xmit(struct sk_buff *skb, struct net_device *dev)
3999 {
4000 struct s2io_nic *sp = netdev_priv(dev);
4001 u16 frg_cnt, frg_len, i, queue, queue_len, put_off, get_off;
4002 register u64 val64;
4003 struct TxD *txdp;
4004 struct TxFIFO_element __iomem *tx_fifo;
4005 unsigned long flags = 0;
4006 u16 vlan_tag = 0;
4007 struct fifo_info *fifo = NULL;
4008 int offload_type;
4009 int enable_per_list_interrupt = 0;
4010 struct config_param *config = &sp->config;
4011 struct mac_info *mac_control = &sp->mac_control;
4012 struct stat_block *stats = mac_control->stats_info;
4013 struct swStat *swstats = &stats->sw_stat;
4014
4015 DBG_PRINT(TX_DBG, "%s: In Neterion Tx routine\n", dev->name);
4016
4017 if (unlikely(skb->len <= 0)) {
4018 DBG_PRINT(TX_DBG, "%s: Buffer has no data..\n", dev->name);
4019 dev_kfree_skb_any(skb);
4020 return NETDEV_TX_OK;
4021 }
4022
4023 if (!is_s2io_card_up(sp)) {
4024 DBG_PRINT(TX_DBG, "%s: Card going down for reset\n",
4025 dev->name);
4026 dev_kfree_skb_any(skb);
4027 return NETDEV_TX_OK;
4028 }
4029
4030 queue = 0;
4031 if (skb_vlan_tag_present(skb))
4032 vlan_tag = skb_vlan_tag_get(skb);
4033 if (sp->config.tx_steering_type == TX_DEFAULT_STEERING) {
4034 if (skb->protocol == htons(ETH_P_IP)) {
4035 struct iphdr *ip;
4036 struct tcphdr *th;
4037 ip = ip_hdr(skb);
4038
4039 if (!ip_is_fragment(ip)) {
4040 th = (struct tcphdr *)(((unsigned char *)ip) +
4041 ip->ihl*4);
4042
4043 if (ip->protocol == IPPROTO_TCP) {
4044 queue_len = sp->total_tcp_fifos;
4045 queue = (ntohs(th->source) +
4046 ntohs(th->dest)) &
4047 sp->fifo_selector[queue_len - 1];
4048 if (queue >= queue_len)
4049 queue = queue_len - 1;
4050 } else if (ip->protocol == IPPROTO_UDP) {
4051 queue_len = sp->total_udp_fifos;
4052 queue = (ntohs(th->source) +
4053 ntohs(th->dest)) &
4054 sp->fifo_selector[queue_len - 1];
4055 if (queue >= queue_len)
4056 queue = queue_len - 1;
4057 queue += sp->udp_fifo_idx;
4058 if (skb->len > 1024)
4059 enable_per_list_interrupt = 1;
4060 }
4061 }
4062 }
4063 } else if (sp->config.tx_steering_type == TX_PRIORITY_STEERING)
4064 /* get fifo number based on skb->priority value */
4065 queue = config->fifo_mapping
4066 [skb->priority & (MAX_TX_FIFOS - 1)];
4067 fifo = &mac_control->fifos[queue];
4068
4069 spin_lock_irqsave(&fifo->tx_lock, flags);
4070
4071 if (sp->config.multiq) {
4072 if (__netif_subqueue_stopped(dev, fifo->fifo_no)) {
4073 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4074 return NETDEV_TX_BUSY;
4075 }
4076 } else if (unlikely(fifo->queue_state == FIFO_QUEUE_STOP)) {
4077 if (netif_queue_stopped(dev)) {
4078 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4079 return NETDEV_TX_BUSY;
4080 }
4081 }
4082
4083 put_off = (u16)fifo->tx_curr_put_info.offset;
4084 get_off = (u16)fifo->tx_curr_get_info.offset;
4085 txdp = fifo->list_info[put_off].list_virt_addr;
4086
4087 queue_len = fifo->tx_curr_put_info.fifo_len + 1;
4088 /* Avoid "put" pointer going beyond "get" pointer */
4089 if (txdp->Host_Control ||
4090 ((put_off+1) == queue_len ? 0 : (put_off+1)) == get_off) {
4091 DBG_PRINT(TX_DBG, "Error in xmit, No free TXDs.\n");
4092 s2io_stop_tx_queue(sp, fifo->fifo_no);
4093 dev_kfree_skb_any(skb);
4094 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4095 return NETDEV_TX_OK;
4096 }
4097
4098 offload_type = s2io_offload_type(skb);
4099 if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
4100 txdp->Control_1 |= TXD_TCP_LSO_EN;
4101 txdp->Control_1 |= TXD_TCP_LSO_MSS(s2io_tcp_mss(skb));
4102 }
4103 if (skb->ip_summed == CHECKSUM_PARTIAL) {
4104 txdp->Control_2 |= (TXD_TX_CKO_IPV4_EN |
4105 TXD_TX_CKO_TCP_EN |
4106 TXD_TX_CKO_UDP_EN);
4107 }
4108 txdp->Control_1 |= TXD_GATHER_CODE_FIRST;
4109 txdp->Control_1 |= TXD_LIST_OWN_XENA;
4110 txdp->Control_2 |= TXD_INT_NUMBER(fifo->fifo_no);
4111 if (enable_per_list_interrupt)
4112 if (put_off & (queue_len >> 5))
4113 txdp->Control_2 |= TXD_INT_TYPE_PER_LIST;
4114 if (vlan_tag) {
4115 txdp->Control_2 |= TXD_VLAN_ENABLE;
4116 txdp->Control_2 |= TXD_VLAN_TAG(vlan_tag);
4117 }
4118
4119 frg_len = skb_headlen(skb);
4120 txdp->Buffer_Pointer = pci_map_single(sp->pdev, skb->data,
4121 frg_len, PCI_DMA_TODEVICE);
4122 if (pci_dma_mapping_error(sp->pdev, txdp->Buffer_Pointer))
4123 goto pci_map_failed;
4124
4125 txdp->Host_Control = (unsigned long)skb;
4126 txdp->Control_1 |= TXD_BUFFER0_SIZE(frg_len);
4127
4128 frg_cnt = skb_shinfo(skb)->nr_frags;
4129 /* For fragmented SKB. */
4130 for (i = 0; i < frg_cnt; i++) {
4131 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4132 /* A '0' length fragment will be ignored */
4133 if (!skb_frag_size(frag))
4134 continue;
4135 txdp++;
4136 txdp->Buffer_Pointer = (u64)skb_frag_dma_map(&sp->pdev->dev,
4137 frag, 0,
4138 skb_frag_size(frag),
4139 DMA_TO_DEVICE);
4140 txdp->Control_1 = TXD_BUFFER0_SIZE(skb_frag_size(frag));
4141 }
4142 txdp->Control_1 |= TXD_GATHER_CODE_LAST;
4143
4144 tx_fifo = mac_control->tx_FIFO_start[queue];
4145 val64 = fifo->list_info[put_off].list_phy_addr;
4146 writeq(val64, &tx_fifo->TxDL_Pointer);
4147
4148 val64 = (TX_FIFO_LAST_TXD_NUM(frg_cnt) | TX_FIFO_FIRST_LIST |
4149 TX_FIFO_LAST_LIST);
4150 if (offload_type)
4151 val64 |= TX_FIFO_SPECIAL_FUNC;
4152
4153 writeq(val64, &tx_fifo->List_Control);
4154
4155 put_off++;
4156 if (put_off == fifo->tx_curr_put_info.fifo_len + 1)
4157 put_off = 0;
4158 fifo->tx_curr_put_info.offset = put_off;
4159
4160 /* Avoid "put" pointer going beyond "get" pointer */
4161 if (((put_off+1) == queue_len ? 0 : (put_off+1)) == get_off) {
4162 swstats->fifo_full_cnt++;
4163 DBG_PRINT(TX_DBG,
4164 "No free TxDs for xmit, Put: 0x%x Get:0x%x\n",
4165 put_off, get_off);
4166 s2io_stop_tx_queue(sp, fifo->fifo_no);
4167 }
4168 swstats->mem_allocated += skb->truesize;
4169 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4170
4171 if (sp->config.intr_type == MSI_X)
4172 tx_intr_handler(fifo);
4173
4174 return NETDEV_TX_OK;
4175
4176 pci_map_failed:
4177 swstats->pci_map_fail_cnt++;
4178 s2io_stop_tx_queue(sp, fifo->fifo_no);
4179 swstats->mem_freed += skb->truesize;
4180 dev_kfree_skb_any(skb);
4181 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4182 return NETDEV_TX_OK;
4183 }
4184
4185 static void
4186 s2io_alarm_handle(struct timer_list *t)
4187 {
4188 struct s2io_nic *sp = from_timer(sp, t, alarm_timer);
4189 struct net_device *dev = sp->dev;
4190
4191 s2io_handle_errors(dev);
4192 mod_timer(&sp->alarm_timer, jiffies + HZ / 2);
4193 }
4194
4195 static irqreturn_t s2io_msix_ring_handle(int irq, void *dev_id)
4196 {
4197 struct ring_info *ring = (struct ring_info *)dev_id;
4198 struct s2io_nic *sp = ring->nic;
4199 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4200
4201 if (unlikely(!is_s2io_card_up(sp)))
4202 return IRQ_HANDLED;
4203
4204 if (sp->config.napi) {
4205 u8 __iomem *addr = NULL;
4206 u8 val8 = 0;
4207
4208 addr = (u8 __iomem *)&bar0->xmsi_mask_reg;
4209 addr += (7 - ring->ring_no);
4210 val8 = (ring->ring_no == 0) ? 0x7f : 0xff;
4211 writeb(val8, addr);
4212 val8 = readb(addr);
4213 napi_schedule(&ring->napi);
4214 } else {
4215 rx_intr_handler(ring, 0);
4216 s2io_chk_rx_buffers(sp, ring);
4217 }
4218
4219 return IRQ_HANDLED;
4220 }
4221
4222 static irqreturn_t s2io_msix_fifo_handle(int irq, void *dev_id)
4223 {
4224 int i;
4225 struct fifo_info *fifos = (struct fifo_info *)dev_id;
4226 struct s2io_nic *sp = fifos->nic;
4227 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4228 struct config_param *config = &sp->config;
4229 u64 reason;
4230
4231 if (unlikely(!is_s2io_card_up(sp)))
4232 return IRQ_NONE;
4233
4234 reason = readq(&bar0->general_int_status);
4235 if (unlikely(reason == S2IO_MINUS_ONE))
4236 /* Nothing much can be done. Get out */
4237 return IRQ_HANDLED;
4238
4239 if (reason & (GEN_INTR_TXPIC | GEN_INTR_TXTRAFFIC)) {
4240 writeq(S2IO_MINUS_ONE, &bar0->general_int_mask);
4241
4242 if (reason & GEN_INTR_TXPIC)
4243 s2io_txpic_intr_handle(sp);
4244
4245 if (reason & GEN_INTR_TXTRAFFIC)
4246 writeq(S2IO_MINUS_ONE, &bar0->tx_traffic_int);
4247
4248 for (i = 0; i < config->tx_fifo_num; i++)
4249 tx_intr_handler(&fifos[i]);
4250
4251 writeq(sp->general_int_mask, &bar0->general_int_mask);
4252 readl(&bar0->general_int_status);
4253 return IRQ_HANDLED;
4254 }
4255 /* The interrupt was not raised by us */
4256 return IRQ_NONE;
4257 }
4258
4259 static void s2io_txpic_intr_handle(struct s2io_nic *sp)
4260 {
4261 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4262 u64 val64;
4263
4264 val64 = readq(&bar0->pic_int_status);
4265 if (val64 & PIC_INT_GPIO) {
4266 val64 = readq(&bar0->gpio_int_reg);
4267 if ((val64 & GPIO_INT_REG_LINK_DOWN) &&
4268 (val64 & GPIO_INT_REG_LINK_UP)) {
4269 /*
4270 * This is unstable state so clear both up/down
4271 * interrupt and adapter to re-evaluate the link state.
4272 */
4273 val64 |= GPIO_INT_REG_LINK_DOWN;
4274 val64 |= GPIO_INT_REG_LINK_UP;
4275 writeq(val64, &bar0->gpio_int_reg);
4276 val64 = readq(&bar0->gpio_int_mask);
4277 val64 &= ~(GPIO_INT_MASK_LINK_UP |
4278 GPIO_INT_MASK_LINK_DOWN);
4279 writeq(val64, &bar0->gpio_int_mask);
4280 } else if (val64 & GPIO_INT_REG_LINK_UP) {
4281 val64 = readq(&bar0->adapter_status);
4282 /* Enable Adapter */
4283 val64 = readq(&bar0->adapter_control);
4284 val64 |= ADAPTER_CNTL_EN;
4285 writeq(val64, &bar0->adapter_control);
4286 val64 |= ADAPTER_LED_ON;
4287 writeq(val64, &bar0->adapter_control);
4288 if (!sp->device_enabled_once)
4289 sp->device_enabled_once = 1;
4290
4291 s2io_link(sp, LINK_UP);
4292 /*
4293 * unmask link down interrupt and mask link-up
4294 * intr
4295 */
4296 val64 = readq(&bar0->gpio_int_mask);
4297 val64 &= ~GPIO_INT_MASK_LINK_DOWN;
4298 val64 |= GPIO_INT_MASK_LINK_UP;
4299 writeq(val64, &bar0->gpio_int_mask);
4300
4301 } else if (val64 & GPIO_INT_REG_LINK_DOWN) {
4302 val64 = readq(&bar0->adapter_status);
4303 s2io_link(sp, LINK_DOWN);
4304 /* Link is down so unmaks link up interrupt */
4305 val64 = readq(&bar0->gpio_int_mask);
4306 val64 &= ~GPIO_INT_MASK_LINK_UP;
4307 val64 |= GPIO_INT_MASK_LINK_DOWN;
4308 writeq(val64, &bar0->gpio_int_mask);
4309
4310 /* turn off LED */
4311 val64 = readq(&bar0->adapter_control);
4312 val64 = val64 & (~ADAPTER_LED_ON);
4313 writeq(val64, &bar0->adapter_control);
4314 }
4315 }
4316 val64 = readq(&bar0->gpio_int_mask);
4317 }
4318
4319 /**
4320 * do_s2io_chk_alarm_bit - Check for alarm and incrment the counter
4321 * @value: alarm bits
4322 * @addr: address value
4323 * @cnt: counter variable
4324 * Description: Check for alarm and increment the counter
4325 * Return Value:
4326 * 1 - if alarm bit set
4327 * 0 - if alarm bit is not set
4328 */
4329 static int do_s2io_chk_alarm_bit(u64 value, void __iomem *addr,
4330 unsigned long long *cnt)
4331 {
4332 u64 val64;
4333 val64 = readq(addr);
4334 if (val64 & value) {
4335 writeq(val64, addr);
4336 (*cnt)++;
4337 return 1;
4338 }
4339 return 0;
4340
4341 }
4342
4343 /**
4344 * s2io_handle_errors - Xframe error indication handler
4345 * @nic: device private variable
4346 * Description: Handle alarms such as loss of link, single or
4347 * double ECC errors, critical and serious errors.
4348 * Return Value:
4349 * NONE
4350 */
4351 static void s2io_handle_errors(void *dev_id)
4352 {
4353 struct net_device *dev = (struct net_device *)dev_id;
4354 struct s2io_nic *sp = netdev_priv(dev);
4355 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4356 u64 temp64 = 0, val64 = 0;
4357 int i = 0;
4358
4359 struct swStat *sw_stat = &sp->mac_control.stats_info->sw_stat;
4360 struct xpakStat *stats = &sp->mac_control.stats_info->xpak_stat;
4361
4362 if (!is_s2io_card_up(sp))
4363 return;
4364
4365 if (pci_channel_offline(sp->pdev))
4366 return;
4367
4368 memset(&sw_stat->ring_full_cnt, 0,
4369 sizeof(sw_stat->ring_full_cnt));
4370
4371 /* Handling the XPAK counters update */
4372 if (stats->xpak_timer_count < 72000) {
4373 /* waiting for an hour */
4374 stats->xpak_timer_count++;
4375 } else {
4376 s2io_updt_xpak_counter(dev);
4377 /* reset the count to zero */
4378 stats->xpak_timer_count = 0;
4379 }
4380
4381 /* Handling link status change error Intr */
4382 if (s2io_link_fault_indication(sp) == MAC_RMAC_ERR_TIMER) {
4383 val64 = readq(&bar0->mac_rmac_err_reg);
4384 writeq(val64, &bar0->mac_rmac_err_reg);
4385 if (val64 & RMAC_LINK_STATE_CHANGE_INT)
4386 schedule_work(&sp->set_link_task);
4387 }
4388
4389 /* In case of a serious error, the device will be Reset. */
4390 if (do_s2io_chk_alarm_bit(SERR_SOURCE_ANY, &bar0->serr_source,
4391 &sw_stat->serious_err_cnt))
4392 goto reset;
4393
4394 /* Check for data parity error */
4395 if (do_s2io_chk_alarm_bit(GPIO_INT_REG_DP_ERR_INT, &bar0->gpio_int_reg,
4396 &sw_stat->parity_err_cnt))
4397 goto reset;
4398
4399 /* Check for ring full counter */
4400 if (sp->device_type == XFRAME_II_DEVICE) {
4401 val64 = readq(&bar0->ring_bump_counter1);
4402 for (i = 0; i < 4; i++) {
4403 temp64 = (val64 & vBIT(0xFFFF, (i*16), 16));
4404 temp64 >>= 64 - ((i+1)*16);
4405 sw_stat->ring_full_cnt[i] += temp64;
4406 }
4407
4408 val64 = readq(&bar0->ring_bump_counter2);
4409 for (i = 0; i < 4; i++) {
4410 temp64 = (val64 & vBIT(0xFFFF, (i*16), 16));
4411 temp64 >>= 64 - ((i+1)*16);
4412 sw_stat->ring_full_cnt[i+4] += temp64;
4413 }
4414 }
4415
4416 val64 = readq(&bar0->txdma_int_status);
4417 /*check for pfc_err*/
4418 if (val64 & TXDMA_PFC_INT) {
4419 if (do_s2io_chk_alarm_bit(PFC_ECC_DB_ERR | PFC_SM_ERR_ALARM |
4420 PFC_MISC_0_ERR | PFC_MISC_1_ERR |
4421 PFC_PCIX_ERR,
4422 &bar0->pfc_err_reg,
4423 &sw_stat->pfc_err_cnt))
4424 goto reset;
4425 do_s2io_chk_alarm_bit(PFC_ECC_SG_ERR,
4426 &bar0->pfc_err_reg,
4427 &sw_stat->pfc_err_cnt);
4428 }
4429
4430 /*check for tda_err*/
4431 if (val64 & TXDMA_TDA_INT) {
4432 if (do_s2io_chk_alarm_bit(TDA_Fn_ECC_DB_ERR |
4433 TDA_SM0_ERR_ALARM |
4434 TDA_SM1_ERR_ALARM,
4435 &bar0->tda_err_reg,
4436 &sw_stat->tda_err_cnt))
4437 goto reset;
4438 do_s2io_chk_alarm_bit(TDA_Fn_ECC_SG_ERR | TDA_PCIX_ERR,
4439 &bar0->tda_err_reg,
4440 &sw_stat->tda_err_cnt);
4441 }
4442 /*check for pcc_err*/
4443 if (val64 & TXDMA_PCC_INT) {
4444 if (do_s2io_chk_alarm_bit(PCC_SM_ERR_ALARM | PCC_WR_ERR_ALARM |
4445 PCC_N_SERR | PCC_6_COF_OV_ERR |
4446 PCC_7_COF_OV_ERR | PCC_6_LSO_OV_ERR |
4447 PCC_7_LSO_OV_ERR | PCC_FB_ECC_DB_ERR |
4448 PCC_TXB_ECC_DB_ERR,
4449 &bar0->pcc_err_reg,
4450 &sw_stat->pcc_err_cnt))
4451 goto reset;
4452 do_s2io_chk_alarm_bit(PCC_FB_ECC_SG_ERR | PCC_TXB_ECC_SG_ERR,
4453 &bar0->pcc_err_reg,
4454 &sw_stat->pcc_err_cnt);
4455 }
4456
4457 /*check for tti_err*/
4458 if (val64 & TXDMA_TTI_INT) {
4459 if (do_s2io_chk_alarm_bit(TTI_SM_ERR_ALARM,
4460 &bar0->tti_err_reg,
4461 &sw_stat->tti_err_cnt))
4462 goto reset;
4463 do_s2io_chk_alarm_bit(TTI_ECC_SG_ERR | TTI_ECC_DB_ERR,
4464 &bar0->tti_err_reg,
4465 &sw_stat->tti_err_cnt);
4466 }
4467
4468 /*check for lso_err*/
4469 if (val64 & TXDMA_LSO_INT) {
4470 if (do_s2io_chk_alarm_bit(LSO6_ABORT | LSO7_ABORT |
4471 LSO6_SM_ERR_ALARM | LSO7_SM_ERR_ALARM,
4472 &bar0->lso_err_reg,
4473 &sw_stat->lso_err_cnt))
4474 goto reset;
4475 do_s2io_chk_alarm_bit(LSO6_SEND_OFLOW | LSO7_SEND_OFLOW,
4476 &bar0->lso_err_reg,
4477 &sw_stat->lso_err_cnt);
4478 }
4479
4480 /*check for tpa_err*/
4481 if (val64 & TXDMA_TPA_INT) {
4482 if (do_s2io_chk_alarm_bit(TPA_SM_ERR_ALARM,
4483 &bar0->tpa_err_reg,
4484 &sw_stat->tpa_err_cnt))
4485 goto reset;
4486 do_s2io_chk_alarm_bit(TPA_TX_FRM_DROP,
4487 &bar0->tpa_err_reg,
4488 &sw_stat->tpa_err_cnt);
4489 }
4490
4491 /*check for sm_err*/
4492 if (val64 & TXDMA_SM_INT) {
4493 if (do_s2io_chk_alarm_bit(SM_SM_ERR_ALARM,
4494 &bar0->sm_err_reg,
4495 &sw_stat->sm_err_cnt))
4496 goto reset;
4497 }
4498
4499 val64 = readq(&bar0->mac_int_status);
4500 if (val64 & MAC_INT_STATUS_TMAC_INT) {
4501 if (do_s2io_chk_alarm_bit(TMAC_TX_BUF_OVRN | TMAC_TX_SM_ERR,
4502 &bar0->mac_tmac_err_reg,
4503 &sw_stat->mac_tmac_err_cnt))
4504 goto reset;
4505 do_s2io_chk_alarm_bit(TMAC_ECC_SG_ERR | TMAC_ECC_DB_ERR |
4506 TMAC_DESC_ECC_SG_ERR |
4507 TMAC_DESC_ECC_DB_ERR,
4508 &bar0->mac_tmac_err_reg,
4509 &sw_stat->mac_tmac_err_cnt);
4510 }
4511
4512 val64 = readq(&bar0->xgxs_int_status);
4513 if (val64 & XGXS_INT_STATUS_TXGXS) {
4514 if (do_s2io_chk_alarm_bit(TXGXS_ESTORE_UFLOW | TXGXS_TX_SM_ERR,
4515 &bar0->xgxs_txgxs_err_reg,
4516 &sw_stat->xgxs_txgxs_err_cnt))
4517 goto reset;
4518 do_s2io_chk_alarm_bit(TXGXS_ECC_SG_ERR | TXGXS_ECC_DB_ERR,
4519 &bar0->xgxs_txgxs_err_reg,
4520 &sw_stat->xgxs_txgxs_err_cnt);
4521 }
4522
4523 val64 = readq(&bar0->rxdma_int_status);
4524 if (val64 & RXDMA_INT_RC_INT_M) {
4525 if (do_s2io_chk_alarm_bit(RC_PRCn_ECC_DB_ERR |
4526 RC_FTC_ECC_DB_ERR |
4527 RC_PRCn_SM_ERR_ALARM |
4528 RC_FTC_SM_ERR_ALARM,
4529 &bar0->rc_err_reg,
4530 &sw_stat->rc_err_cnt))
4531 goto reset;
4532 do_s2io_chk_alarm_bit(RC_PRCn_ECC_SG_ERR |
4533 RC_FTC_ECC_SG_ERR |
4534 RC_RDA_FAIL_WR_Rn, &bar0->rc_err_reg,
4535 &sw_stat->rc_err_cnt);
4536 if (do_s2io_chk_alarm_bit(PRC_PCI_AB_RD_Rn |
4537 PRC_PCI_AB_WR_Rn |
4538 PRC_PCI_AB_F_WR_Rn,
4539 &bar0->prc_pcix_err_reg,
4540 &sw_stat->prc_pcix_err_cnt))
4541 goto reset;
4542 do_s2io_chk_alarm_bit(PRC_PCI_DP_RD_Rn |
4543 PRC_PCI_DP_WR_Rn |
4544 PRC_PCI_DP_F_WR_Rn,
4545 &bar0->prc_pcix_err_reg,
4546 &sw_stat->prc_pcix_err_cnt);
4547 }
4548
4549 if (val64 & RXDMA_INT_RPA_INT_M) {
4550 if (do_s2io_chk_alarm_bit(RPA_SM_ERR_ALARM | RPA_CREDIT_ERR,
4551 &bar0->rpa_err_reg,
4552 &sw_stat->rpa_err_cnt))
4553 goto reset;
4554 do_s2io_chk_alarm_bit(RPA_ECC_SG_ERR | RPA_ECC_DB_ERR,
4555 &bar0->rpa_err_reg,
4556 &sw_stat->rpa_err_cnt);
4557 }
4558
4559 if (val64 & RXDMA_INT_RDA_INT_M) {
4560 if (do_s2io_chk_alarm_bit(RDA_RXDn_ECC_DB_ERR |
4561 RDA_FRM_ECC_DB_N_AERR |
4562 RDA_SM1_ERR_ALARM |
4563 RDA_SM0_ERR_ALARM |
4564 RDA_RXD_ECC_DB_SERR,
4565 &bar0->rda_err_reg,
4566 &sw_stat->rda_err_cnt))
4567 goto reset;
4568 do_s2io_chk_alarm_bit(RDA_RXDn_ECC_SG_ERR |
4569 RDA_FRM_ECC_SG_ERR |
4570 RDA_MISC_ERR |
4571 RDA_PCIX_ERR,
4572 &bar0->rda_err_reg,
4573 &sw_stat->rda_err_cnt);
4574 }
4575
4576 if (val64 & RXDMA_INT_RTI_INT_M) {
4577 if (do_s2io_chk_alarm_bit(RTI_SM_ERR_ALARM,
4578 &bar0->rti_err_reg,
4579 &sw_stat->rti_err_cnt))
4580 goto reset;
4581 do_s2io_chk_alarm_bit(RTI_ECC_SG_ERR | RTI_ECC_DB_ERR,
4582 &bar0->rti_err_reg,
4583 &sw_stat->rti_err_cnt);
4584 }
4585
4586 val64 = readq(&bar0->mac_int_status);
4587 if (val64 & MAC_INT_STATUS_RMAC_INT) {
4588 if (do_s2io_chk_alarm_bit(RMAC_RX_BUFF_OVRN | RMAC_RX_SM_ERR,
4589 &bar0->mac_rmac_err_reg,
4590 &sw_stat->mac_rmac_err_cnt))
4591 goto reset;
4592 do_s2io_chk_alarm_bit(RMAC_UNUSED_INT |
4593 RMAC_SINGLE_ECC_ERR |
4594 RMAC_DOUBLE_ECC_ERR,
4595 &bar0->mac_rmac_err_reg,
4596 &sw_stat->mac_rmac_err_cnt);
4597 }
4598
4599 val64 = readq(&bar0->xgxs_int_status);
4600 if (val64 & XGXS_INT_STATUS_RXGXS) {
4601 if (do_s2io_chk_alarm_bit(RXGXS_ESTORE_OFLOW | RXGXS_RX_SM_ERR,
4602 &bar0->xgxs_rxgxs_err_reg,
4603 &sw_stat->xgxs_rxgxs_err_cnt))
4604 goto reset;
4605 }
4606
4607 val64 = readq(&bar0->mc_int_status);
4608 if (val64 & MC_INT_STATUS_MC_INT) {
4609 if (do_s2io_chk_alarm_bit(MC_ERR_REG_SM_ERR,
4610 &bar0->mc_err_reg,
4611 &sw_stat->mc_err_cnt))
4612 goto reset;
4613
4614 /* Handling Ecc errors */
4615 if (val64 & (MC_ERR_REG_ECC_ALL_SNG | MC_ERR_REG_ECC_ALL_DBL)) {
4616 writeq(val64, &bar0->mc_err_reg);
4617 if (val64 & MC_ERR_REG_ECC_ALL_DBL) {
4618 sw_stat->double_ecc_errs++;
4619 if (sp->device_type != XFRAME_II_DEVICE) {
4620 /*
4621 * Reset XframeI only if critical error
4622 */
4623 if (val64 &
4624 (MC_ERR_REG_MIRI_ECC_DB_ERR_0 |
4625 MC_ERR_REG_MIRI_ECC_DB_ERR_1))
4626 goto reset;
4627 }
4628 } else
4629 sw_stat->single_ecc_errs++;
4630 }
4631 }
4632 return;
4633
4634 reset:
4635 s2io_stop_all_tx_queue(sp);
4636 schedule_work(&sp->rst_timer_task);
4637 sw_stat->soft_reset_cnt++;
4638 }
4639
4640 /**
4641 * s2io_isr - ISR handler of the device .
4642 * @irq: the irq of the device.
4643 * @dev_id: a void pointer to the dev structure of the NIC.
4644 * Description: This function is the ISR handler of the device. It
4645 * identifies the reason for the interrupt and calls the relevant
4646 * service routines. As a contongency measure, this ISR allocates the
4647 * recv buffers, if their numbers are below the panic value which is
4648 * presently set to 25% of the original number of rcv buffers allocated.
4649 * Return value:
4650 * IRQ_HANDLED: will be returned if IRQ was handled by this routine
4651 * IRQ_NONE: will be returned if interrupt is not from our device
4652 */
4653 static irqreturn_t s2io_isr(int irq, void *dev_id)
4654 {
4655 struct net_device *dev = (struct net_device *)dev_id;
4656 struct s2io_nic *sp = netdev_priv(dev);
4657 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4658 int i;
4659 u64 reason = 0;
4660 struct mac_info *mac_control;
4661 struct config_param *config;
4662
4663 /* Pretend we handled any irq's from a disconnected card */
4664 if (pci_channel_offline(sp->pdev))
4665 return IRQ_NONE;
4666
4667 if (!is_s2io_card_up(sp))
4668 return IRQ_NONE;
4669
4670 config = &sp->config;
4671 mac_control = &sp->mac_control;
4672
4673 /*
4674 * Identify the cause for interrupt and call the appropriate
4675 * interrupt handler. Causes for the interrupt could be;
4676 * 1. Rx of packet.
4677 * 2. Tx complete.
4678 * 3. Link down.
4679 */
4680 reason = readq(&bar0->general_int_status);
4681
4682 if (unlikely(reason == S2IO_MINUS_ONE))
4683 return IRQ_HANDLED; /* Nothing much can be done. Get out */
4684
4685 if (reason &
4686 (GEN_INTR_RXTRAFFIC | GEN_INTR_TXTRAFFIC | GEN_INTR_TXPIC)) {
4687 writeq(S2IO_MINUS_ONE, &bar0->general_int_mask);
4688
4689 if (config->napi) {
4690 if (reason & GEN_INTR_RXTRAFFIC) {
4691 napi_schedule(&sp->napi);
4692 writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_mask);
4693 writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
4694 readl(&bar0->rx_traffic_int);
4695 }
4696 } else {
4697 /*
4698 * rx_traffic_int reg is an R1 register, writing all 1's
4699 * will ensure that the actual interrupt causing bit
4700 * get's cleared and hence a read can be avoided.
4701 */
4702 if (reason & GEN_INTR_RXTRAFFIC)
4703 writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
4704
4705 for (i = 0; i < config->rx_ring_num; i++) {
4706 struct ring_info *ring = &mac_control->rings[i];
4707
4708 rx_intr_handler(ring, 0);
4709 }
4710 }
4711
4712 /*
4713 * tx_traffic_int reg is an R1 register, writing all 1's
4714 * will ensure that the actual interrupt causing bit get's
4715 * cleared and hence a read can be avoided.
4716 */
4717 if (reason & GEN_INTR_TXTRAFFIC)
4718 writeq(S2IO_MINUS_ONE, &bar0->tx_traffic_int);
4719
4720 for (i = 0; i < config->tx_fifo_num; i++)
4721 tx_intr_handler(&mac_control->fifos[i]);
4722
4723 if (reason & GEN_INTR_TXPIC)
4724 s2io_txpic_intr_handle(sp);
4725
4726 /*
4727 * Reallocate the buffers from the interrupt handler itself.
4728 */
4729 if (!config->napi) {
4730 for (i = 0; i < config->rx_ring_num; i++) {
4731 struct ring_info *ring = &mac_control->rings[i];
4732
4733 s2io_chk_rx_buffers(sp, ring);
4734 }
4735 }
4736 writeq(sp->general_int_mask, &bar0->general_int_mask);
4737 readl(&bar0->general_int_status);
4738
4739 return IRQ_HANDLED;
4740
4741 } else if (!reason) {
4742 /* The interrupt was not raised by us */
4743 return IRQ_NONE;
4744 }
4745
4746 return IRQ_HANDLED;
4747 }
4748
4749 /**
4750 * s2io_updt_stats -
4751 */
4752 static void s2io_updt_stats(struct s2io_nic *sp)
4753 {
4754 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4755 u64 val64;
4756 int cnt = 0;
4757
4758 if (is_s2io_card_up(sp)) {
4759 /* Apprx 30us on a 133 MHz bus */
4760 val64 = SET_UPDT_CLICKS(10) |
4761 STAT_CFG_ONE_SHOT_EN | STAT_CFG_STAT_EN;
4762 writeq(val64, &bar0->stat_cfg);
4763 do {
4764 udelay(100);
4765 val64 = readq(&bar0->stat_cfg);
4766 if (!(val64 & s2BIT(0)))
4767 break;
4768 cnt++;
4769 if (cnt == 5)
4770 break; /* Updt failed */
4771 } while (1);
4772 }
4773 }
4774
4775 /**
4776 * s2io_get_stats - Updates the device statistics structure.
4777 * @dev : pointer to the device structure.
4778 * Description:
4779 * This function updates the device statistics structure in the s2io_nic
4780 * structure and returns a pointer to the same.
4781 * Return value:
4782 * pointer to the updated net_device_stats structure.
4783 */
4784 static struct net_device_stats *s2io_get_stats(struct net_device *dev)
4785 {
4786 struct s2io_nic *sp = netdev_priv(dev);
4787 struct mac_info *mac_control = &sp->mac_control;
4788 struct stat_block *stats = mac_control->stats_info;
4789 u64 delta;
4790
4791 /* Configure Stats for immediate updt */
4792 s2io_updt_stats(sp);
4793
4794 /* A device reset will cause the on-adapter statistics to be zero'ed.
4795 * This can be done while running by changing the MTU. To prevent the
4796 * system from having the stats zero'ed, the driver keeps a copy of the
4797 * last update to the system (which is also zero'ed on reset). This
4798 * enables the driver to accurately know the delta between the last
4799 * update and the current update.
4800 */
4801 delta = ((u64) le32_to_cpu(stats->rmac_vld_frms_oflow) << 32 |
4802 le32_to_cpu(stats->rmac_vld_frms)) - sp->stats.rx_packets;
4803 sp->stats.rx_packets += delta;
4804 dev->stats.rx_packets += delta;
4805
4806 delta = ((u64) le32_to_cpu(stats->tmac_frms_oflow) << 32 |
4807 le32_to_cpu(stats->tmac_frms)) - sp->stats.tx_packets;
4808 sp->stats.tx_packets += delta;
4809 dev->stats.tx_packets += delta;
4810
4811 delta = ((u64) le32_to_cpu(stats->rmac_data_octets_oflow) << 32 |
4812 le32_to_cpu(stats->rmac_data_octets)) - sp->stats.rx_bytes;
4813 sp->stats.rx_bytes += delta;
4814 dev->stats.rx_bytes += delta;
4815
4816 delta = ((u64) le32_to_cpu(stats->tmac_data_octets_oflow) << 32 |
4817 le32_to_cpu(stats->tmac_data_octets)) - sp->stats.tx_bytes;
4818 sp->stats.tx_bytes += delta;
4819 dev->stats.tx_bytes += delta;
4820
4821 delta = le64_to_cpu(stats->rmac_drop_frms) - sp->stats.rx_errors;
4822 sp->stats.rx_errors += delta;
4823 dev->stats.rx_errors += delta;
4824
4825 delta = ((u64) le32_to_cpu(stats->tmac_any_err_frms_oflow) << 32 |
4826 le32_to_cpu(stats->tmac_any_err_frms)) - sp->stats.tx_errors;
4827 sp->stats.tx_errors += delta;
4828 dev->stats.tx_errors += delta;
4829
4830 delta = le64_to_cpu(stats->rmac_drop_frms) - sp->stats.rx_dropped;
4831 sp->stats.rx_dropped += delta;
4832 dev->stats.rx_dropped += delta;
4833
4834 delta = le64_to_cpu(stats->tmac_drop_frms) - sp->stats.tx_dropped;
4835 sp->stats.tx_dropped += delta;
4836 dev->stats.tx_dropped += delta;
4837
4838 /* The adapter MAC interprets pause frames as multicast packets, but
4839 * does not pass them up. This erroneously increases the multicast
4840 * packet count and needs to be deducted when the multicast frame count
4841 * is queried.
4842 */
4843 delta = (u64) le32_to_cpu(stats->rmac_vld_mcst_frms_oflow) << 32 |
4844 le32_to_cpu(stats->rmac_vld_mcst_frms);
4845 delta -= le64_to_cpu(stats->rmac_pause_ctrl_frms);
4846 delta -= sp->stats.multicast;
4847 sp->stats.multicast += delta;
4848 dev->stats.multicast += delta;
4849
4850 delta = ((u64) le32_to_cpu(stats->rmac_usized_frms_oflow) << 32 |
4851 le32_to_cpu(stats->rmac_usized_frms)) +
4852 le64_to_cpu(stats->rmac_long_frms) - sp->stats.rx_length_errors;
4853 sp->stats.rx_length_errors += delta;
4854 dev->stats.rx_length_errors += delta;
4855
4856 delta = le64_to_cpu(stats->rmac_fcs_err_frms) - sp->stats.rx_crc_errors;
4857 sp->stats.rx_crc_errors += delta;
4858 dev->stats.rx_crc_errors += delta;
4859
4860 return &dev->stats;
4861 }
4862
4863 /**
4864 * s2io_set_multicast - entry point for multicast address enable/disable.
4865 * @dev : pointer to the device structure
4866 * Description:
4867 * This function is a driver entry point which gets called by the kernel
4868 * whenever multicast addresses must be enabled/disabled. This also gets
4869 * called to set/reset promiscuous mode. Depending on the deivce flag, we
4870 * determine, if multicast address must be enabled or if promiscuous mode
4871 * is to be disabled etc.
4872 * Return value:
4873 * void.
4874 */
4875
4876 static void s2io_set_multicast(struct net_device *dev)
4877 {
4878 int i, j, prev_cnt;
4879 struct netdev_hw_addr *ha;
4880 struct s2io_nic *sp = netdev_priv(dev);
4881 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4882 u64 val64 = 0, multi_mac = 0x010203040506ULL, mask =
4883 0xfeffffffffffULL;
4884 u64 dis_addr = S2IO_DISABLE_MAC_ENTRY, mac_addr = 0;
4885 void __iomem *add;
4886 struct config_param *config = &sp->config;
4887
4888 if ((dev->flags & IFF_ALLMULTI) && (!sp->m_cast_flg)) {
4889 /* Enable all Multicast addresses */
4890 writeq(RMAC_ADDR_DATA0_MEM_ADDR(multi_mac),
4891 &bar0->rmac_addr_data0_mem);
4892 writeq(RMAC_ADDR_DATA1_MEM_MASK(mask),
4893 &bar0->rmac_addr_data1_mem);
4894 val64 = RMAC_ADDR_CMD_MEM_WE |
4895 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4896 RMAC_ADDR_CMD_MEM_OFFSET(config->max_mc_addr - 1);
4897 writeq(val64, &bar0->rmac_addr_cmd_mem);
4898 /* Wait till command completes */
4899 wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
4900 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
4901 S2IO_BIT_RESET);
4902
4903 sp->m_cast_flg = 1;
4904 sp->all_multi_pos = config->max_mc_addr - 1;
4905 } else if ((dev->flags & IFF_ALLMULTI) && (sp->m_cast_flg)) {
4906 /* Disable all Multicast addresses */
4907 writeq(RMAC_ADDR_DATA0_MEM_ADDR(dis_addr),
4908 &bar0->rmac_addr_data0_mem);
4909 writeq(RMAC_ADDR_DATA1_MEM_MASK(0x0),
4910 &bar0->rmac_addr_data1_mem);
4911 val64 = RMAC_ADDR_CMD_MEM_WE |
4912 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4913 RMAC_ADDR_CMD_MEM_OFFSET(sp->all_multi_pos);
4914 writeq(val64, &bar0->rmac_addr_cmd_mem);
4915 /* Wait till command completes */
4916 wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
4917 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
4918 S2IO_BIT_RESET);
4919
4920 sp->m_cast_flg = 0;
4921 sp->all_multi_pos = 0;
4922 }
4923
4924 if ((dev->flags & IFF_PROMISC) && (!sp->promisc_flg)) {
4925 /* Put the NIC into promiscuous mode */
4926 add = &bar0->mac_cfg;
4927 val64 = readq(&bar0->mac_cfg);
4928 val64 |= MAC_CFG_RMAC_PROM_ENABLE;
4929
4930 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4931 writel((u32)val64, add);
4932 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4933 writel((u32) (val64 >> 32), (add + 4));
4934
4935 if (vlan_tag_strip != 1) {
4936 val64 = readq(&bar0->rx_pa_cfg);
4937 val64 &= ~RX_PA_CFG_STRIP_VLAN_TAG;
4938 writeq(val64, &bar0->rx_pa_cfg);
4939 sp->vlan_strip_flag = 0;
4940 }
4941
4942 val64 = readq(&bar0->mac_cfg);
4943 sp->promisc_flg = 1;
4944 DBG_PRINT(INFO_DBG, "%s: entered promiscuous mode\n",
4945 dev->name);
4946 } else if (!(dev->flags & IFF_PROMISC) && (sp->promisc_flg)) {
4947 /* Remove the NIC from promiscuous mode */
4948 add = &bar0->mac_cfg;
4949 val64 = readq(&bar0->mac_cfg);
4950 val64 &= ~MAC_CFG_RMAC_PROM_ENABLE;
4951
4952 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4953 writel((u32)val64, add);
4954 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4955 writel((u32) (val64 >> 32), (add + 4));
4956
4957 if (vlan_tag_strip != 0) {
4958 val64 = readq(&bar0->rx_pa_cfg);
4959 val64 |= RX_PA_CFG_STRIP_VLAN_TAG;
4960 writeq(val64, &bar0->rx_pa_cfg);
4961 sp->vlan_strip_flag = 1;
4962 }
4963
4964 val64 = readq(&bar0->mac_cfg);
4965 sp->promisc_flg = 0;
4966 DBG_PRINT(INFO_DBG, "%s: left promiscuous mode\n", dev->name);
4967 }
4968
4969 /* Update individual M_CAST address list */
4970 if ((!sp->m_cast_flg) && netdev_mc_count(dev)) {
4971 if (netdev_mc_count(dev) >
4972 (config->max_mc_addr - config->max_mac_addr)) {
4973 DBG_PRINT(ERR_DBG,
4974 "%s: No more Rx filters can be added - "
4975 "please enable ALL_MULTI instead\n",
4976 dev->name);
4977 return;
4978 }
4979
4980 prev_cnt = sp->mc_addr_count;
4981 sp->mc_addr_count = netdev_mc_count(dev);
4982
4983 /* Clear out the previous list of Mc in the H/W. */
4984 for (i = 0; i < prev_cnt; i++) {
4985 writeq(RMAC_ADDR_DATA0_MEM_ADDR(dis_addr),
4986 &bar0->rmac_addr_data0_mem);
4987 writeq(RMAC_ADDR_DATA1_MEM_MASK(0ULL),
4988 &bar0->rmac_addr_data1_mem);
4989 val64 = RMAC_ADDR_CMD_MEM_WE |
4990 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4991 RMAC_ADDR_CMD_MEM_OFFSET
4992 (config->mc_start_offset + i);
4993 writeq(val64, &bar0->rmac_addr_cmd_mem);
4994
4995 /* Wait for command completes */
4996 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
4997 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
4998 S2IO_BIT_RESET)) {
4999 DBG_PRINT(ERR_DBG,
5000 "%s: Adding Multicasts failed\n",
5001 dev->name);
5002 return;
5003 }
5004 }
5005
5006 /* Create the new Rx filter list and update the same in H/W. */
5007 i = 0;
5008 netdev_for_each_mc_addr(ha, dev) {
5009 mac_addr = 0;
5010 for (j = 0; j < ETH_ALEN; j++) {
5011 mac_addr |= ha->addr[j];
5012 mac_addr <<= 8;
5013 }
5014 mac_addr >>= 8;
5015 writeq(RMAC_ADDR_DATA0_MEM_ADDR(mac_addr),
5016 &bar0->rmac_addr_data0_mem);
5017 writeq(RMAC_ADDR_DATA1_MEM_MASK(0ULL),
5018 &bar0->rmac_addr_data1_mem);
5019 val64 = RMAC_ADDR_CMD_MEM_WE |
5020 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
5021 RMAC_ADDR_CMD_MEM_OFFSET
5022 (i + config->mc_start_offset);
5023 writeq(val64, &bar0->rmac_addr_cmd_mem);
5024
5025 /* Wait for command completes */
5026 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
5027 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
5028 S2IO_BIT_RESET)) {
5029 DBG_PRINT(ERR_DBG,
5030 "%s: Adding Multicasts failed\n",
5031 dev->name);
5032 return;
5033 }
5034 i++;
5035 }
5036 }
5037 }
5038
5039 /* read from CAM unicast & multicast addresses and store it in
5040 * def_mac_addr structure
5041 */
5042 static void do_s2io_store_unicast_mc(struct s2io_nic *sp)
5043 {
5044 int offset;
5045 u64 mac_addr = 0x0;
5046 struct config_param *config = &sp->config;
5047
5048 /* store unicast & multicast mac addresses */
5049 for (offset = 0; offset < config->max_mc_addr; offset++) {
5050 mac_addr = do_s2io_read_unicast_mc(sp, offset);
5051 /* if read fails disable the entry */
5052 if (mac_addr == FAILURE)
5053 mac_addr = S2IO_DISABLE_MAC_ENTRY;
5054 do_s2io_copy_mac_addr(sp, offset, mac_addr);
5055 }
5056 }
5057
5058 /* restore unicast & multicast MAC to CAM from def_mac_addr structure */
5059 static void do_s2io_restore_unicast_mc(struct s2io_nic *sp)
5060 {
5061 int offset;
5062 struct config_param *config = &sp->config;
5063 /* restore unicast mac address */
5064 for (offset = 0; offset < config->max_mac_addr; offset++)
5065 do_s2io_prog_unicast(sp->dev,
5066 sp->def_mac_addr[offset].mac_addr);
5067
5068 /* restore multicast mac address */
5069 for (offset = config->mc_start_offset;
5070 offset < config->max_mc_addr; offset++)
5071 do_s2io_add_mc(sp, sp->def_mac_addr[offset].mac_addr);
5072 }
5073
5074 /* add a multicast MAC address to CAM */
5075 static int do_s2io_add_mc(struct s2io_nic *sp, u8 *addr)
5076 {
5077 int i;
5078 u64 mac_addr = 0;
5079 struct config_param *config = &sp->config;
5080
5081 for (i = 0; i < ETH_ALEN; i++) {
5082 mac_addr <<= 8;
5083 mac_addr |= addr[i];
5084 }
5085 if ((0ULL == mac_addr) || (mac_addr == S2IO_DISABLE_MAC_ENTRY))
5086 return SUCCESS;
5087
5088 /* check if the multicast mac already preset in CAM */
5089 for (i = config->mc_start_offset; i < config->max_mc_addr; i++) {
5090 u64 tmp64;
5091 tmp64 = do_s2io_read_unicast_mc(sp, i);
5092 if (tmp64 == S2IO_DISABLE_MAC_ENTRY) /* CAM entry is empty */
5093 break;
5094
5095 if (tmp64 == mac_addr)
5096 return SUCCESS;
5097 }
5098 if (i == config->max_mc_addr) {
5099 DBG_PRINT(ERR_DBG,
5100 "CAM full no space left for multicast MAC\n");
5101 return FAILURE;
5102 }
5103 /* Update the internal structure with this new mac address */
5104 do_s2io_copy_mac_addr(sp, i, mac_addr);
5105
5106 return do_s2io_add_mac(sp, mac_addr, i);
5107 }
5108
5109 /* add MAC address to CAM */
5110 static int do_s2io_add_mac(struct s2io_nic *sp, u64 addr, int off)
5111 {
5112 u64 val64;
5113 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5114
5115 writeq(RMAC_ADDR_DATA0_MEM_ADDR(addr),
5116 &bar0->rmac_addr_data0_mem);
5117
5118 val64 = RMAC_ADDR_CMD_MEM_WE | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
5119 RMAC_ADDR_CMD_MEM_OFFSET(off);
5120 writeq(val64, &bar0->rmac_addr_cmd_mem);
5121
5122 /* Wait till command completes */
5123 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
5124 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
5125 S2IO_BIT_RESET)) {
5126 DBG_PRINT(INFO_DBG, "do_s2io_add_mac failed\n");
5127 return FAILURE;
5128 }
5129 return SUCCESS;
5130 }
5131 /* deletes a specified unicast/multicast mac entry from CAM */
5132 static int do_s2io_delete_unicast_mc(struct s2io_nic *sp, u64 addr)
5133 {
5134 int offset;
5135 u64 dis_addr = S2IO_DISABLE_MAC_ENTRY, tmp64;
5136 struct config_param *config = &sp->config;
5137
5138 for (offset = 1;
5139 offset < config->max_mc_addr; offset++) {
5140 tmp64 = do_s2io_read_unicast_mc(sp, offset);
5141 if (tmp64 == addr) {
5142 /* disable the entry by writing 0xffffffffffffULL */
5143 if (do_s2io_add_mac(sp, dis_addr, offset) == FAILURE)
5144 return FAILURE;
5145 /* store the new mac list from CAM */
5146 do_s2io_store_unicast_mc(sp);
5147 return SUCCESS;
5148 }
5149 }
5150 DBG_PRINT(ERR_DBG, "MAC address 0x%llx not found in CAM\n",
5151 (unsigned long long)addr);
5152 return FAILURE;
5153 }
5154
5155 /* read mac entries from CAM */
5156 static u64 do_s2io_read_unicast_mc(struct s2io_nic *sp, int offset)
5157 {
5158 u64 tmp64, val64;
5159 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5160
5161 /* read mac addr */
5162 val64 = RMAC_ADDR_CMD_MEM_RD | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
5163 RMAC_ADDR_CMD_MEM_OFFSET(offset);
5164 writeq(val64, &bar0->rmac_addr_cmd_mem);
5165
5166 /* Wait till command completes */
5167 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
5168 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
5169 S2IO_BIT_RESET)) {
5170 DBG_PRINT(INFO_DBG, "do_s2io_read_unicast_mc failed\n");
5171 return FAILURE;
5172 }
5173 tmp64 = readq(&bar0->rmac_addr_data0_mem);
5174
5175 return tmp64 >> 16;
5176 }
5177
5178 /**
5179 * s2io_set_mac_addr - driver entry point
5180 */
5181
5182 static int s2io_set_mac_addr(struct net_device *dev, void *p)
5183 {
5184 struct sockaddr *addr = p;
5185
5186 if (!is_valid_ether_addr(addr->sa_data))
5187 return -EADDRNOTAVAIL;
5188
5189 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
5190
5191 /* store the MAC address in CAM */
5192 return do_s2io_prog_unicast(dev, dev->dev_addr);
5193 }
5194 /**
5195 * do_s2io_prog_unicast - Programs the Xframe mac address
5196 * @dev : pointer to the device structure.
5197 * @addr: a uchar pointer to the new mac address which is to be set.
5198 * Description : This procedure will program the Xframe to receive
5199 * frames with new Mac Address
5200 * Return value: SUCCESS on success and an appropriate (-)ve integer
5201 * as defined in errno.h file on failure.
5202 */
5203
5204 static int do_s2io_prog_unicast(struct net_device *dev, u8 *addr)
5205 {
5206 struct s2io_nic *sp = netdev_priv(dev);
5207 register u64 mac_addr = 0, perm_addr = 0;
5208 int i;
5209 u64 tmp64;
5210 struct config_param *config = &sp->config;
5211
5212 /*
5213 * Set the new MAC address as the new unicast filter and reflect this
5214 * change on the device address registered with the OS. It will be
5215 * at offset 0.
5216 */
5217 for (i = 0; i < ETH_ALEN; i++) {
5218 mac_addr <<= 8;
5219 mac_addr |= addr[i];
5220 perm_addr <<= 8;
5221 perm_addr |= sp->def_mac_addr[0].mac_addr[i];
5222 }
5223
5224 /* check if the dev_addr is different than perm_addr */
5225 if (mac_addr == perm_addr)
5226 return SUCCESS;
5227
5228 /* check if the mac already preset in CAM */
5229 for (i = 1; i < config->max_mac_addr; i++) {
5230 tmp64 = do_s2io_read_unicast_mc(sp, i);
5231 if (tmp64 == S2IO_DISABLE_MAC_ENTRY) /* CAM entry is empty */
5232 break;
5233
5234 if (tmp64 == mac_addr) {
5235 DBG_PRINT(INFO_DBG,
5236 "MAC addr:0x%llx already present in CAM\n",
5237 (unsigned long long)mac_addr);
5238 return SUCCESS;
5239 }
5240 }
5241 if (i == config->max_mac_addr) {
5242 DBG_PRINT(ERR_DBG, "CAM full no space left for Unicast MAC\n");
5243 return FAILURE;
5244 }
5245 /* Update the internal structure with this new mac address */
5246 do_s2io_copy_mac_addr(sp, i, mac_addr);
5247
5248 return do_s2io_add_mac(sp, mac_addr, i);
5249 }
5250
5251 /**
5252 * s2io_ethtool_set_link_ksettings - Sets different link parameters.
5253 * @sp : private member of the device structure, which is a pointer to the
5254 * s2io_nic structure.
5255 * @cmd: pointer to the structure with parameters given by ethtool to set
5256 * link information.
5257 * Description:
5258 * The function sets different link parameters provided by the user onto
5259 * the NIC.
5260 * Return value:
5261 * 0 on success.
5262 */
5263
5264 static int
5265 s2io_ethtool_set_link_ksettings(struct net_device *dev,
5266 const struct ethtool_link_ksettings *cmd)
5267 {
5268 struct s2io_nic *sp = netdev_priv(dev);
5269 if ((cmd->base.autoneg == AUTONEG_ENABLE) ||
5270 (cmd->base.speed != SPEED_10000) ||
5271 (cmd->base.duplex != DUPLEX_FULL))
5272 return -EINVAL;
5273 else {
5274 s2io_close(sp->dev);
5275 s2io_open(sp->dev);
5276 }
5277
5278 return 0;
5279 }
5280
5281 /**
5282 * s2io_ethtol_get_link_ksettings - Return link specific information.
5283 * @sp : private member of the device structure, pointer to the
5284 * s2io_nic structure.
5285 * @cmd : pointer to the structure with parameters given by ethtool
5286 * to return link information.
5287 * Description:
5288 * Returns link specific information like speed, duplex etc.. to ethtool.
5289 * Return value :
5290 * return 0 on success.
5291 */
5292
5293 static int
5294 s2io_ethtool_get_link_ksettings(struct net_device *dev,
5295 struct ethtool_link_ksettings *cmd)
5296 {
5297 struct s2io_nic *sp = netdev_priv(dev);
5298
5299 ethtool_link_ksettings_zero_link_mode(cmd, supported);
5300 ethtool_link_ksettings_add_link_mode(cmd, supported, 10000baseT_Full);
5301 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
5302
5303 ethtool_link_ksettings_zero_link_mode(cmd, advertising);
5304 ethtool_link_ksettings_add_link_mode(cmd, advertising, 10000baseT_Full);
5305 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
5306
5307 cmd->base.port = PORT_FIBRE;
5308
5309 if (netif_carrier_ok(sp->dev)) {
5310 cmd->base.speed = SPEED_10000;
5311 cmd->base.duplex = DUPLEX_FULL;
5312 } else {
5313 cmd->base.speed = SPEED_UNKNOWN;
5314 cmd->base.duplex = DUPLEX_UNKNOWN;
5315 }
5316
5317 cmd->base.autoneg = AUTONEG_DISABLE;
5318 return 0;
5319 }
5320
5321 /**
5322 * s2io_ethtool_gdrvinfo - Returns driver specific information.
5323 * @sp : private member of the device structure, which is a pointer to the
5324 * s2io_nic structure.
5325 * @info : pointer to the structure with parameters given by ethtool to
5326 * return driver information.
5327 * Description:
5328 * Returns driver specefic information like name, version etc.. to ethtool.
5329 * Return value:
5330 * void
5331 */
5332
5333 static void s2io_ethtool_gdrvinfo(struct net_device *dev,
5334 struct ethtool_drvinfo *info)
5335 {
5336 struct s2io_nic *sp = netdev_priv(dev);
5337
5338 strlcpy(info->driver, s2io_driver_name, sizeof(info->driver));
5339 strlcpy(info->version, s2io_driver_version, sizeof(info->version));
5340 strlcpy(info->bus_info, pci_name(sp->pdev), sizeof(info->bus_info));
5341 }
5342
5343 /**
5344 * s2io_ethtool_gregs - dumps the entire space of Xfame into the buffer.
5345 * @sp: private member of the device structure, which is a pointer to the
5346 * s2io_nic structure.
5347 * @regs : pointer to the structure with parameters given by ethtool for
5348 * dumping the registers.
5349 * @reg_space: The input argument into which all the registers are dumped.
5350 * Description:
5351 * Dumps the entire register space of xFrame NIC into the user given
5352 * buffer area.
5353 * Return value :
5354 * void .
5355 */
5356
5357 static void s2io_ethtool_gregs(struct net_device *dev,
5358 struct ethtool_regs *regs, void *space)
5359 {
5360 int i;
5361 u64 reg;
5362 u8 *reg_space = (u8 *)space;
5363 struct s2io_nic *sp = netdev_priv(dev);
5364
5365 regs->len = XENA_REG_SPACE;
5366 regs->version = sp->pdev->subsystem_device;
5367
5368 for (i = 0; i < regs->len; i += 8) {
5369 reg = readq(sp->bar0 + i);
5370 memcpy((reg_space + i), &reg, 8);
5371 }
5372 }
5373
5374 /*
5375 * s2io_set_led - control NIC led
5376 */
5377 static void s2io_set_led(struct s2io_nic *sp, bool on)
5378 {
5379 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5380 u16 subid = sp->pdev->subsystem_device;
5381 u64 val64;
5382
5383 if ((sp->device_type == XFRAME_II_DEVICE) ||
5384 ((subid & 0xFF) >= 0x07)) {
5385 val64 = readq(&bar0->gpio_control);
5386 if (on)
5387 val64 |= GPIO_CTRL_GPIO_0;
5388 else
5389 val64 &= ~GPIO_CTRL_GPIO_0;
5390
5391 writeq(val64, &bar0->gpio_control);
5392 } else {
5393 val64 = readq(&bar0->adapter_control);
5394 if (on)
5395 val64 |= ADAPTER_LED_ON;
5396 else
5397 val64 &= ~ADAPTER_LED_ON;
5398
5399 writeq(val64, &bar0->adapter_control);
5400 }
5401
5402 }
5403
5404 /**
5405 * s2io_ethtool_set_led - To physically identify the nic on the system.
5406 * @dev : network device
5407 * @state: led setting
5408 *
5409 * Description: Used to physically identify the NIC on the system.
5410 * The Link LED will blink for a time specified by the user for
5411 * identification.
5412 * NOTE: The Link has to be Up to be able to blink the LED. Hence
5413 * identification is possible only if it's link is up.
5414 */
5415
5416 static int s2io_ethtool_set_led(struct net_device *dev,
5417 enum ethtool_phys_id_state state)
5418 {
5419 struct s2io_nic *sp = netdev_priv(dev);
5420 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5421 u16 subid = sp->pdev->subsystem_device;
5422
5423 if ((sp->device_type == XFRAME_I_DEVICE) && ((subid & 0xFF) < 0x07)) {
5424 u64 val64 = readq(&bar0->adapter_control);
5425 if (!(val64 & ADAPTER_CNTL_EN)) {
5426 pr_err("Adapter Link down, cannot blink LED\n");
5427 return -EAGAIN;
5428 }
5429 }
5430
5431 switch (state) {
5432 case ETHTOOL_ID_ACTIVE:
5433 sp->adapt_ctrl_org = readq(&bar0->gpio_control);
5434 return 1; /* cycle on/off once per second */
5435
5436 case ETHTOOL_ID_ON:
5437 s2io_set_led(sp, true);
5438 break;
5439
5440 case ETHTOOL_ID_OFF:
5441 s2io_set_led(sp, false);
5442 break;
5443
5444 case ETHTOOL_ID_INACTIVE:
5445 if (CARDS_WITH_FAULTY_LINK_INDICATORS(sp->device_type, subid))
5446 writeq(sp->adapt_ctrl_org, &bar0->gpio_control);
5447 }
5448
5449 return 0;
5450 }
5451
5452 static void s2io_ethtool_gringparam(struct net_device *dev,
5453 struct ethtool_ringparam *ering)
5454 {
5455 struct s2io_nic *sp = netdev_priv(dev);
5456 int i, tx_desc_count = 0, rx_desc_count = 0;
5457
5458 if (sp->rxd_mode == RXD_MODE_1) {
5459 ering->rx_max_pending = MAX_RX_DESC_1;
5460 ering->rx_jumbo_max_pending = MAX_RX_DESC_1;
5461 } else {
5462 ering->rx_max_pending = MAX_RX_DESC_2;
5463 ering->rx_jumbo_max_pending = MAX_RX_DESC_2;
5464 }
5465
5466 ering->tx_max_pending = MAX_TX_DESC;
5467
5468 for (i = 0; i < sp->config.rx_ring_num; i++)
5469 rx_desc_count += sp->config.rx_cfg[i].num_rxd;
5470 ering->rx_pending = rx_desc_count;
5471 ering->rx_jumbo_pending = rx_desc_count;
5472
5473 for (i = 0; i < sp->config.tx_fifo_num; i++)
5474 tx_desc_count += sp->config.tx_cfg[i].fifo_len;
5475 ering->tx_pending = tx_desc_count;
5476 DBG_PRINT(INFO_DBG, "max txds: %d\n", sp->config.max_txds);
5477 }
5478
5479 /**
5480 * s2io_ethtool_getpause_data -Pause frame frame generation and reception.
5481 * @sp : private member of the device structure, which is a pointer to the
5482 * s2io_nic structure.
5483 * @ep : pointer to the structure with pause parameters given by ethtool.
5484 * Description:
5485 * Returns the Pause frame generation and reception capability of the NIC.
5486 * Return value:
5487 * void
5488 */
5489 static void s2io_ethtool_getpause_data(struct net_device *dev,
5490 struct ethtool_pauseparam *ep)
5491 {
5492 u64 val64;
5493 struct s2io_nic *sp = netdev_priv(dev);
5494 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5495
5496 val64 = readq(&bar0->rmac_pause_cfg);
5497 if (val64 & RMAC_PAUSE_GEN_ENABLE)
5498 ep->tx_pause = true;
5499 if (val64 & RMAC_PAUSE_RX_ENABLE)
5500 ep->rx_pause = true;
5501 ep->autoneg = false;
5502 }
5503
5504 /**
5505 * s2io_ethtool_setpause_data - set/reset pause frame generation.
5506 * @sp : private member of the device structure, which is a pointer to the
5507 * s2io_nic structure.
5508 * @ep : pointer to the structure with pause parameters given by ethtool.
5509 * Description:
5510 * It can be used to set or reset Pause frame generation or reception
5511 * support of the NIC.
5512 * Return value:
5513 * int, returns 0 on Success
5514 */
5515
5516 static int s2io_ethtool_setpause_data(struct net_device *dev,
5517 struct ethtool_pauseparam *ep)
5518 {
5519 u64 val64;
5520 struct s2io_nic *sp = netdev_priv(dev);
5521 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5522
5523 val64 = readq(&bar0->rmac_pause_cfg);
5524 if (ep->tx_pause)
5525 val64 |= RMAC_PAUSE_GEN_ENABLE;
5526 else
5527 val64 &= ~RMAC_PAUSE_GEN_ENABLE;
5528 if (ep->rx_pause)
5529 val64 |= RMAC_PAUSE_RX_ENABLE;
5530 else
5531 val64 &= ~RMAC_PAUSE_RX_ENABLE;
5532 writeq(val64, &bar0->rmac_pause_cfg);
5533 return 0;
5534 }
5535
5536 /**
5537 * read_eeprom - reads 4 bytes of data from user given offset.
5538 * @sp : private member of the device structure, which is a pointer to the
5539 * s2io_nic structure.
5540 * @off : offset at which the data must be written
5541 * @data : Its an output parameter where the data read at the given
5542 * offset is stored.
5543 * Description:
5544 * Will read 4 bytes of data from the user given offset and return the
5545 * read data.
5546 * NOTE: Will allow to read only part of the EEPROM visible through the
5547 * I2C bus.
5548 * Return value:
5549 * -1 on failure and 0 on success.
5550 */
5551
5552 #define S2IO_DEV_ID 5
5553 static int read_eeprom(struct s2io_nic *sp, int off, u64 *data)
5554 {
5555 int ret = -1;
5556 u32 exit_cnt = 0;
5557 u64 val64;
5558 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5559
5560 if (sp->device_type == XFRAME_I_DEVICE) {
5561 val64 = I2C_CONTROL_DEV_ID(S2IO_DEV_ID) |
5562 I2C_CONTROL_ADDR(off) |
5563 I2C_CONTROL_BYTE_CNT(0x3) |
5564 I2C_CONTROL_READ |
5565 I2C_CONTROL_CNTL_START;
5566 SPECIAL_REG_WRITE(val64, &bar0->i2c_control, LF);
5567
5568 while (exit_cnt < 5) {
5569 val64 = readq(&bar0->i2c_control);
5570 if (I2C_CONTROL_CNTL_END(val64)) {
5571 *data = I2C_CONTROL_GET_DATA(val64);
5572 ret = 0;
5573 break;
5574 }
5575 msleep(50);
5576 exit_cnt++;
5577 }
5578 }
5579
5580 if (sp->device_type == XFRAME_II_DEVICE) {
5581 val64 = SPI_CONTROL_KEY(0x9) | SPI_CONTROL_SEL1 |
5582 SPI_CONTROL_BYTECNT(0x3) |
5583 SPI_CONTROL_CMD(0x3) | SPI_CONTROL_ADDR(off);
5584 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5585 val64 |= SPI_CONTROL_REQ;
5586 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5587 while (exit_cnt < 5) {
5588 val64 = readq(&bar0->spi_control);
5589 if (val64 & SPI_CONTROL_NACK) {
5590 ret = 1;
5591 break;
5592 } else if (val64 & SPI_CONTROL_DONE) {
5593 *data = readq(&bar0->spi_data);
5594 *data &= 0xffffff;
5595 ret = 0;
5596 break;
5597 }
5598 msleep(50);
5599 exit_cnt++;
5600 }
5601 }
5602 return ret;
5603 }
5604
5605 /**
5606 * write_eeprom - actually writes the relevant part of the data value.
5607 * @sp : private member of the device structure, which is a pointer to the
5608 * s2io_nic structure.
5609 * @off : offset at which the data must be written
5610 * @data : The data that is to be written
5611 * @cnt : Number of bytes of the data that are actually to be written into
5612 * the Eeprom. (max of 3)
5613 * Description:
5614 * Actually writes the relevant part of the data value into the Eeprom
5615 * through the I2C bus.
5616 * Return value:
5617 * 0 on success, -1 on failure.
5618 */
5619
5620 static int write_eeprom(struct s2io_nic *sp, int off, u64 data, int cnt)
5621 {
5622 int exit_cnt = 0, ret = -1;
5623 u64 val64;
5624 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5625
5626 if (sp->device_type == XFRAME_I_DEVICE) {
5627 val64 = I2C_CONTROL_DEV_ID(S2IO_DEV_ID) |
5628 I2C_CONTROL_ADDR(off) |
5629 I2C_CONTROL_BYTE_CNT(cnt) |
5630 I2C_CONTROL_SET_DATA((u32)data) |
5631 I2C_CONTROL_CNTL_START;
5632 SPECIAL_REG_WRITE(val64, &bar0->i2c_control, LF);
5633
5634 while (exit_cnt < 5) {
5635 val64 = readq(&bar0->i2c_control);
5636 if (I2C_CONTROL_CNTL_END(val64)) {
5637 if (!(val64 & I2C_CONTROL_NACK))
5638 ret = 0;
5639 break;
5640 }
5641 msleep(50);
5642 exit_cnt++;
5643 }
5644 }
5645
5646 if (sp->device_type == XFRAME_II_DEVICE) {
5647 int write_cnt = (cnt == 8) ? 0 : cnt;
5648 writeq(SPI_DATA_WRITE(data, (cnt << 3)), &bar0->spi_data);
5649
5650 val64 = SPI_CONTROL_KEY(0x9) | SPI_CONTROL_SEL1 |
5651 SPI_CONTROL_BYTECNT(write_cnt) |
5652 SPI_CONTROL_CMD(0x2) | SPI_CONTROL_ADDR(off);
5653 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5654 val64 |= SPI_CONTROL_REQ;
5655 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5656 while (exit_cnt < 5) {
5657 val64 = readq(&bar0->spi_control);
5658 if (val64 & SPI_CONTROL_NACK) {
5659 ret = 1;
5660 break;
5661 } else if (val64 & SPI_CONTROL_DONE) {
5662 ret = 0;
5663 break;
5664 }
5665 msleep(50);
5666 exit_cnt++;
5667 }
5668 }
5669 return ret;
5670 }
5671 static void s2io_vpd_read(struct s2io_nic *nic)
5672 {
5673 u8 *vpd_data;
5674 u8 data;
5675 int i = 0, cnt, len, fail = 0;
5676 int vpd_addr = 0x80;
5677 struct swStat *swstats = &nic->mac_control.stats_info->sw_stat;
5678
5679 if (nic->device_type == XFRAME_II_DEVICE) {
5680 strcpy(nic->product_name, "Xframe II 10GbE network adapter");
5681 vpd_addr = 0x80;
5682 } else {
5683 strcpy(nic->product_name, "Xframe I 10GbE network adapter");
5684 vpd_addr = 0x50;
5685 }
5686 strcpy(nic->serial_num, "NOT AVAILABLE");
5687
5688 vpd_data = kmalloc(256, GFP_KERNEL);
5689 if (!vpd_data) {
5690 swstats->mem_alloc_fail_cnt++;
5691 return;
5692 }
5693 swstats->mem_allocated += 256;
5694
5695 for (i = 0; i < 256; i += 4) {
5696 pci_write_config_byte(nic->pdev, (vpd_addr + 2), i);
5697 pci_read_config_byte(nic->pdev, (vpd_addr + 2), &data);
5698 pci_write_config_byte(nic->pdev, (vpd_addr + 3), 0);
5699 for (cnt = 0; cnt < 5; cnt++) {
5700 msleep(2);
5701 pci_read_config_byte(nic->pdev, (vpd_addr + 3), &data);
5702 if (data == 0x80)
5703 break;
5704 }
5705 if (cnt >= 5) {
5706 DBG_PRINT(ERR_DBG, "Read of VPD data failed\n");
5707 fail = 1;
5708 break;
5709 }
5710 pci_read_config_dword(nic->pdev, (vpd_addr + 4),
5711 (u32 *)&vpd_data[i]);
5712 }
5713
5714 if (!fail) {
5715 /* read serial number of adapter */
5716 for (cnt = 0; cnt < 252; cnt++) {
5717 if ((vpd_data[cnt] == 'S') &&
5718 (vpd_data[cnt+1] == 'N')) {
5719 len = vpd_data[cnt+2];
5720 if (len < min(VPD_STRING_LEN, 256-cnt-2)) {
5721 memcpy(nic->serial_num,
5722 &vpd_data[cnt + 3],
5723 len);
5724 memset(nic->serial_num+len,
5725 0,
5726 VPD_STRING_LEN-len);
5727 break;
5728 }
5729 }
5730 }
5731 }
5732
5733 if ((!fail) && (vpd_data[1] < VPD_STRING_LEN)) {
5734 len = vpd_data[1];
5735 memcpy(nic->product_name, &vpd_data[3], len);
5736 nic->product_name[len] = 0;
5737 }
5738 kfree(vpd_data);
5739 swstats->mem_freed += 256;
5740 }
5741
5742 /**
5743 * s2io_ethtool_geeprom - reads the value stored in the Eeprom.
5744 * @sp : private member of the device structure, which is a pointer to the
5745 * s2io_nic structure.
5746 * @eeprom : pointer to the user level structure provided by ethtool,
5747 * containing all relevant information.
5748 * @data_buf : user defined value to be written into Eeprom.
5749 * Description: Reads the values stored in the Eeprom at given offset
5750 * for a given length. Stores these values int the input argument data
5751 * buffer 'data_buf' and returns these to the caller (ethtool.)
5752 * Return value:
5753 * int 0 on success
5754 */
5755
5756 static int s2io_ethtool_geeprom(struct net_device *dev,
5757 struct ethtool_eeprom *eeprom, u8 * data_buf)
5758 {
5759 u32 i, valid;
5760 u64 data;
5761 struct s2io_nic *sp = netdev_priv(dev);
5762
5763 eeprom->magic = sp->pdev->vendor | (sp->pdev->device << 16);
5764
5765 if ((eeprom->offset + eeprom->len) > (XENA_EEPROM_SPACE))
5766 eeprom->len = XENA_EEPROM_SPACE - eeprom->offset;
5767
5768 for (i = 0; i < eeprom->len; i += 4) {
5769 if (read_eeprom(sp, (eeprom->offset + i), &data)) {
5770 DBG_PRINT(ERR_DBG, "Read of EEPROM failed\n");
5771 return -EFAULT;
5772 }
5773 valid = INV(data);
5774 memcpy((data_buf + i), &valid, 4);
5775 }
5776 return 0;
5777 }
5778
5779 /**
5780 * s2io_ethtool_seeprom - tries to write the user provided value in Eeprom
5781 * @sp : private member of the device structure, which is a pointer to the
5782 * s2io_nic structure.
5783 * @eeprom : pointer to the user level structure provided by ethtool,
5784 * containing all relevant information.
5785 * @data_buf ; user defined value to be written into Eeprom.
5786 * Description:
5787 * Tries to write the user provided value in the Eeprom, at the offset
5788 * given by the user.
5789 * Return value:
5790 * 0 on success, -EFAULT on failure.
5791 */
5792
5793 static int s2io_ethtool_seeprom(struct net_device *dev,
5794 struct ethtool_eeprom *eeprom,
5795 u8 *data_buf)
5796 {
5797 int len = eeprom->len, cnt = 0;
5798 u64 valid = 0, data;
5799 struct s2io_nic *sp = netdev_priv(dev);
5800
5801 if (eeprom->magic != (sp->pdev->vendor | (sp->pdev->device << 16))) {
5802 DBG_PRINT(ERR_DBG,
5803 "ETHTOOL_WRITE_EEPROM Err: "
5804 "Magic value is wrong, it is 0x%x should be 0x%x\n",
5805 (sp->pdev->vendor | (sp->pdev->device << 16)),
5806 eeprom->magic);
5807 return -EFAULT;
5808 }
5809
5810 while (len) {
5811 data = (u32)data_buf[cnt] & 0x000000FF;
5812 if (data)
5813 valid = (u32)(data << 24);
5814 else
5815 valid = data;
5816
5817 if (write_eeprom(sp, (eeprom->offset + cnt), valid, 0)) {
5818 DBG_PRINT(ERR_DBG,
5819 "ETHTOOL_WRITE_EEPROM Err: "
5820 "Cannot write into the specified offset\n");
5821 return -EFAULT;
5822 }
5823 cnt++;
5824 len--;
5825 }
5826
5827 return 0;
5828 }
5829
5830 /**
5831 * s2io_register_test - reads and writes into all clock domains.
5832 * @sp : private member of the device structure, which is a pointer to the
5833 * s2io_nic structure.
5834 * @data : variable that returns the result of each of the test conducted b
5835 * by the driver.
5836 * Description:
5837 * Read and write into all clock domains. The NIC has 3 clock domains,
5838 * see that registers in all the three regions are accessible.
5839 * Return value:
5840 * 0 on success.
5841 */
5842
5843 static int s2io_register_test(struct s2io_nic *sp, uint64_t *data)
5844 {
5845 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5846 u64 val64 = 0, exp_val;
5847 int fail = 0;
5848
5849 val64 = readq(&bar0->pif_rd_swapper_fb);
5850 if (val64 != 0x123456789abcdefULL) {
5851 fail = 1;
5852 DBG_PRINT(INFO_DBG, "Read Test level %d fails\n", 1);
5853 }
5854
5855 val64 = readq(&bar0->rmac_pause_cfg);
5856 if (val64 != 0xc000ffff00000000ULL) {
5857 fail = 1;
5858 DBG_PRINT(INFO_DBG, "Read Test level %d fails\n", 2);
5859 }
5860
5861 val64 = readq(&bar0->rx_queue_cfg);
5862 if (sp->device_type == XFRAME_II_DEVICE)
5863 exp_val = 0x0404040404040404ULL;
5864 else
5865 exp_val = 0x0808080808080808ULL;
5866 if (val64 != exp_val) {
5867 fail = 1;
5868 DBG_PRINT(INFO_DBG, "Read Test level %d fails\n", 3);
5869 }
5870
5871 val64 = readq(&bar0->xgxs_efifo_cfg);
5872 if (val64 != 0x000000001923141EULL) {
5873 fail = 1;
5874 DBG_PRINT(INFO_DBG, "Read Test level %d fails\n", 4);
5875 }
5876
5877 val64 = 0x5A5A5A5A5A5A5A5AULL;
5878 writeq(val64, &bar0->xmsi_data);
5879 val64 = readq(&bar0->xmsi_data);
5880 if (val64 != 0x5A5A5A5A5A5A5A5AULL) {
5881 fail = 1;
5882 DBG_PRINT(ERR_DBG, "Write Test level %d fails\n", 1);
5883 }
5884
5885 val64 = 0xA5A5A5A5A5A5A5A5ULL;
5886 writeq(val64, &bar0->xmsi_data);
5887 val64 = readq(&bar0->xmsi_data);
5888 if (val64 != 0xA5A5A5A5A5A5A5A5ULL) {
5889 fail = 1;
5890 DBG_PRINT(ERR_DBG, "Write Test level %d fails\n", 2);
5891 }
5892
5893 *data = fail;
5894 return fail;
5895 }
5896
5897 /**
5898 * s2io_eeprom_test - to verify that EEprom in the xena can be programmed.
5899 * @sp : private member of the device structure, which is a pointer to the
5900 * s2io_nic structure.
5901 * @data:variable that returns the result of each of the test conducted by
5902 * the driver.
5903 * Description:
5904 * Verify that EEPROM in the xena can be programmed using I2C_CONTROL
5905 * register.
5906 * Return value:
5907 * 0 on success.
5908 */
5909
5910 static int s2io_eeprom_test(struct s2io_nic *sp, uint64_t *data)
5911 {
5912 int fail = 0;
5913 u64 ret_data, org_4F0, org_7F0;
5914 u8 saved_4F0 = 0, saved_7F0 = 0;
5915 struct net_device *dev = sp->dev;
5916
5917 /* Test Write Error at offset 0 */
5918 /* Note that SPI interface allows write access to all areas
5919 * of EEPROM. Hence doing all negative testing only for Xframe I.
5920 */
5921 if (sp->device_type == XFRAME_I_DEVICE)
5922 if (!write_eeprom(sp, 0, 0, 3))
5923 fail = 1;
5924
5925 /* Save current values at offsets 0x4F0 and 0x7F0 */
5926 if (!read_eeprom(sp, 0x4F0, &org_4F0))
5927 saved_4F0 = 1;
5928 if (!read_eeprom(sp, 0x7F0, &org_7F0))
5929 saved_7F0 = 1;
5930
5931 /* Test Write at offset 4f0 */
5932 if (write_eeprom(sp, 0x4F0, 0x012345, 3))
5933 fail = 1;
5934 if (read_eeprom(sp, 0x4F0, &ret_data))
5935 fail = 1;
5936
5937 if (ret_data != 0x012345) {
5938 DBG_PRINT(ERR_DBG, "%s: eeprom test error at offset 0x4F0. "
5939 "Data written %llx Data read %llx\n",
5940 dev->name, (unsigned long long)0x12345,
5941 (unsigned long long)ret_data);
5942 fail = 1;
5943 }
5944
5945 /* Reset the EEPROM data go FFFF */
5946 write_eeprom(sp, 0x4F0, 0xFFFFFF, 3);
5947
5948 /* Test Write Request Error at offset 0x7c */
5949 if (sp->device_type == XFRAME_I_DEVICE)
5950 if (!write_eeprom(sp, 0x07C, 0, 3))
5951 fail = 1;
5952
5953 /* Test Write Request at offset 0x7f0 */
5954 if (write_eeprom(sp, 0x7F0, 0x012345, 3))
5955 fail = 1;
5956 if (read_eeprom(sp, 0x7F0, &ret_data))
5957 fail = 1;
5958
5959 if (ret_data != 0x012345) {
5960 DBG_PRINT(ERR_DBG, "%s: eeprom test error at offset 0x7F0. "
5961 "Data written %llx Data read %llx\n",
5962 dev->name, (unsigned long long)0x12345,
5963 (unsigned long long)ret_data);
5964 fail = 1;
5965 }
5966
5967 /* Reset the EEPROM data go FFFF */
5968 write_eeprom(sp, 0x7F0, 0xFFFFFF, 3);
5969
5970 if (sp->device_type == XFRAME_I_DEVICE) {
5971 /* Test Write Error at offset 0x80 */
5972 if (!write_eeprom(sp, 0x080, 0, 3))
5973 fail = 1;
5974
5975 /* Test Write Error at offset 0xfc */
5976 if (!write_eeprom(sp, 0x0FC, 0, 3))
5977 fail = 1;
5978
5979 /* Test Write Error at offset 0x100 */
5980 if (!write_eeprom(sp, 0x100, 0, 3))
5981 fail = 1;
5982
5983 /* Test Write Error at offset 4ec */
5984 if (!write_eeprom(sp, 0x4EC, 0, 3))
5985 fail = 1;
5986 }
5987
5988 /* Restore values at offsets 0x4F0 and 0x7F0 */
5989 if (saved_4F0)
5990 write_eeprom(sp, 0x4F0, org_4F0, 3);
5991 if (saved_7F0)
5992 write_eeprom(sp, 0x7F0, org_7F0, 3);
5993
5994 *data = fail;
5995 return fail;
5996 }
5997
5998 /**
5999 * s2io_bist_test - invokes the MemBist test of the card .
6000 * @sp : private member of the device structure, which is a pointer to the
6001 * s2io_nic structure.
6002 * @data:variable that returns the result of each of the test conducted by
6003 * the driver.
6004 * Description:
6005 * This invokes the MemBist test of the card. We give around
6006 * 2 secs time for the Test to complete. If it's still not complete
6007 * within this peiod, we consider that the test failed.
6008 * Return value:
6009 * 0 on success and -1 on failure.
6010 */
6011
6012 static int s2io_bist_test(struct s2io_nic *sp, uint64_t *data)
6013 {
6014 u8 bist = 0;
6015 int cnt = 0, ret = -1;
6016
6017 pci_read_config_byte(sp->pdev, PCI_BIST, &bist);
6018 bist |= PCI_BIST_START;
6019 pci_write_config_word(sp->pdev, PCI_BIST, bist);
6020
6021 while (cnt < 20) {
6022 pci_read_config_byte(sp->pdev, PCI_BIST, &bist);
6023 if (!(bist & PCI_BIST_START)) {
6024 *data = (bist & PCI_BIST_CODE_MASK);
6025 ret = 0;
6026 break;
6027 }
6028 msleep(100);
6029 cnt++;
6030 }
6031
6032 return ret;
6033 }
6034
6035 /**
6036 * s2io_link_test - verifies the link state of the nic
6037 * @sp ; private member of the device structure, which is a pointer to the
6038 * s2io_nic structure.
6039 * @data: variable that returns the result of each of the test conducted by
6040 * the driver.
6041 * Description:
6042 * The function verifies the link state of the NIC and updates the input
6043 * argument 'data' appropriately.
6044 * Return value:
6045 * 0 on success.
6046 */
6047
6048 static int s2io_link_test(struct s2io_nic *sp, uint64_t *data)
6049 {
6050 struct XENA_dev_config __iomem *bar0 = sp->bar0;
6051 u64 val64;
6052
6053 val64 = readq(&bar0->adapter_status);
6054 if (!(LINK_IS_UP(val64)))
6055 *data = 1;
6056 else
6057 *data = 0;
6058
6059 return *data;
6060 }
6061
6062 /**
6063 * s2io_rldram_test - offline test for access to the RldRam chip on the NIC
6064 * @sp: private member of the device structure, which is a pointer to the
6065 * s2io_nic structure.
6066 * @data: variable that returns the result of each of the test
6067 * conducted by the driver.
6068 * Description:
6069 * This is one of the offline test that tests the read and write
6070 * access to the RldRam chip on the NIC.
6071 * Return value:
6072 * 0 on success.
6073 */
6074
6075 static int s2io_rldram_test(struct s2io_nic *sp, uint64_t *data)
6076 {
6077 struct XENA_dev_config __iomem *bar0 = sp->bar0;
6078 u64 val64;
6079 int cnt, iteration = 0, test_fail = 0;
6080
6081 val64 = readq(&bar0->adapter_control);
6082 val64 &= ~ADAPTER_ECC_EN;
6083 writeq(val64, &bar0->adapter_control);
6084
6085 val64 = readq(&bar0->mc_rldram_test_ctrl);
6086 val64 |= MC_RLDRAM_TEST_MODE;
6087 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_test_ctrl, LF);
6088
6089 val64 = readq(&bar0->mc_rldram_mrs);
6090 val64 |= MC_RLDRAM_QUEUE_SIZE_ENABLE;
6091 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF);
6092
6093 val64 |= MC_RLDRAM_MRS_ENABLE;
6094 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF);
6095
6096 while (iteration < 2) {
6097 val64 = 0x55555555aaaa0000ULL;
6098 if (iteration == 1)
6099 val64 ^= 0xFFFFFFFFFFFF0000ULL;
6100 writeq(val64, &bar0->mc_rldram_test_d0);
6101
6102 val64 = 0xaaaa5a5555550000ULL;
6103 if (iteration == 1)
6104 val64 ^= 0xFFFFFFFFFFFF0000ULL;
6105 writeq(val64, &bar0->mc_rldram_test_d1);
6106
6107 val64 = 0x55aaaaaaaa5a0000ULL;
6108 if (iteration == 1)
6109 val64 ^= 0xFFFFFFFFFFFF0000ULL;
6110 writeq(val64, &bar0->mc_rldram_test_d2);
6111
6112 val64 = (u64) (0x0000003ffffe0100ULL);
6113 writeq(val64, &bar0->mc_rldram_test_add);
6114
6115 val64 = MC_RLDRAM_TEST_MODE |
6116 MC_RLDRAM_TEST_WRITE |
6117 MC_RLDRAM_TEST_GO;
6118 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_test_ctrl, LF);
6119
6120 for (cnt = 0; cnt < 5; cnt++) {
6121 val64 = readq(&bar0->mc_rldram_test_ctrl);
6122 if (val64 & MC_RLDRAM_TEST_DONE)
6123 break;
6124 msleep(200);
6125 }
6126
6127 if (cnt == 5)
6128 break;
6129
6130 val64 = MC_RLDRAM_TEST_MODE | MC_RLDRAM_TEST_GO;
6131 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_test_ctrl, LF);
6132
6133 for (cnt = 0; cnt < 5; cnt++) {
6134 val64 = readq(&bar0->mc_rldram_test_ctrl);
6135 if (val64 & MC_RLDRAM_TEST_DONE)
6136 break;
6137 msleep(500);
6138 }
6139
6140 if (cnt == 5)
6141 break;
6142
6143 val64 = readq(&bar0->mc_rldram_test_ctrl);
6144 if (!(val64 & MC_RLDRAM_TEST_PASS))
6145 test_fail = 1;
6146
6147 iteration++;
6148 }
6149
6150 *data = test_fail;
6151
6152 /* Bring the adapter out of test mode */
6153 SPECIAL_REG_WRITE(0, &bar0->mc_rldram_test_ctrl, LF);
6154
6155 return test_fail;
6156 }
6157
6158 /**
6159 * s2io_ethtool_test - conducts 6 tsets to determine the health of card.
6160 * @sp : private member of the device structure, which is a pointer to the
6161 * s2io_nic structure.
6162 * @ethtest : pointer to a ethtool command specific structure that will be
6163 * returned to the user.
6164 * @data : variable that returns the result of each of the test
6165 * conducted by the driver.
6166 * Description:
6167 * This function conducts 6 tests ( 4 offline and 2 online) to determine
6168 * the health of the card.
6169 * Return value:
6170 * void
6171 */
6172
6173 static void s2io_ethtool_test(struct net_device *dev,
6174 struct ethtool_test *ethtest,
6175 uint64_t *data)
6176 {
6177 struct s2io_nic *sp = netdev_priv(dev);
6178 int orig_state = netif_running(sp->dev);
6179
6180 if (ethtest->flags == ETH_TEST_FL_OFFLINE) {
6181 /* Offline Tests. */
6182 if (orig_state)
6183 s2io_close(sp->dev);
6184
6185 if (s2io_register_test(sp, &data[0]))
6186 ethtest->flags |= ETH_TEST_FL_FAILED;
6187
6188 s2io_reset(sp);
6189
6190 if (s2io_rldram_test(sp, &data[3]))
6191 ethtest->flags |= ETH_TEST_FL_FAILED;
6192
6193 s2io_reset(sp);
6194
6195 if (s2io_eeprom_test(sp, &data[1]))
6196 ethtest->flags |= ETH_TEST_FL_FAILED;
6197
6198 if (s2io_bist_test(sp, &data[4]))
6199 ethtest->flags |= ETH_TEST_FL_FAILED;
6200
6201 if (orig_state)
6202 s2io_open(sp->dev);
6203
6204 data[2] = 0;
6205 } else {
6206 /* Online Tests. */
6207 if (!orig_state) {
6208 DBG_PRINT(ERR_DBG, "%s: is not up, cannot run test\n",
6209 dev->name);
6210 data[0] = -1;
6211 data[1] = -1;
6212 data[2] = -1;
6213 data[3] = -1;
6214 data[4] = -1;
6215 }
6216
6217 if (s2io_link_test(sp, &data[2]))
6218 ethtest->flags |= ETH_TEST_FL_FAILED;
6219
6220 data[0] = 0;
6221 data[1] = 0;
6222 data[3] = 0;
6223 data[4] = 0;
6224 }
6225 }
6226
6227 static void s2io_get_ethtool_stats(struct net_device *dev,
6228 struct ethtool_stats *estats,
6229 u64 *tmp_stats)
6230 {
6231 int i = 0, k;
6232 struct s2io_nic *sp = netdev_priv(dev);
6233 struct stat_block *stats = sp->mac_control.stats_info;
6234 struct swStat *swstats = &stats->sw_stat;
6235 struct xpakStat *xstats = &stats->xpak_stat;
6236
6237 s2io_updt_stats(sp);
6238 tmp_stats[i++] =
6239 (u64)le32_to_cpu(stats->tmac_frms_oflow) << 32 |
6240 le32_to_cpu(stats->tmac_frms);
6241 tmp_stats[i++] =
6242 (u64)le32_to_cpu(stats->tmac_data_octets_oflow) << 32 |
6243 le32_to_cpu(stats->tmac_data_octets);
6244 tmp_stats[i++] = le64_to_cpu(stats->tmac_drop_frms);
6245 tmp_stats[i++] =
6246 (u64)le32_to_cpu(stats->tmac_mcst_frms_oflow) << 32 |
6247 le32_to_cpu(stats->tmac_mcst_frms);
6248 tmp_stats[i++] =
6249 (u64)le32_to_cpu(stats->tmac_bcst_frms_oflow) << 32 |
6250 le32_to_cpu(stats->tmac_bcst_frms);
6251 tmp_stats[i++] = le64_to_cpu(stats->tmac_pause_ctrl_frms);
6252 tmp_stats[i++] =
6253 (u64)le32_to_cpu(stats->tmac_ttl_octets_oflow) << 32 |
6254 le32_to_cpu(stats->tmac_ttl_octets);
6255 tmp_stats[i++] =
6256 (u64)le32_to_cpu(stats->tmac_ucst_frms_oflow) << 32 |
6257 le32_to_cpu(stats->tmac_ucst_frms);
6258 tmp_stats[i++] =
6259 (u64)le32_to_cpu(stats->tmac_nucst_frms_oflow) << 32 |
6260 le32_to_cpu(stats->tmac_nucst_frms);
6261 tmp_stats[i++] =
6262 (u64)le32_to_cpu(stats->tmac_any_err_frms_oflow) << 32 |
6263 le32_to_cpu(stats->tmac_any_err_frms);
6264 tmp_stats[i++] = le64_to_cpu(stats->tmac_ttl_less_fb_octets);
6265 tmp_stats[i++] = le64_to_cpu(stats->tmac_vld_ip_octets);
6266 tmp_stats[i++] =
6267 (u64)le32_to_cpu(stats->tmac_vld_ip_oflow) << 32 |
6268 le32_to_cpu(stats->tmac_vld_ip);
6269 tmp_stats[i++] =
6270 (u64)le32_to_cpu(stats->tmac_drop_ip_oflow) << 32 |
6271 le32_to_cpu(stats->tmac_drop_ip);
6272 tmp_stats[i++] =
6273 (u64)le32_to_cpu(stats->tmac_icmp_oflow) << 32 |
6274 le32_to_cpu(stats->tmac_icmp);
6275 tmp_stats[i++] =
6276 (u64)le32_to_cpu(stats->tmac_rst_tcp_oflow) << 32 |
6277 le32_to_cpu(stats->tmac_rst_tcp);
6278 tmp_stats[i++] = le64_to_cpu(stats->tmac_tcp);
6279 tmp_stats[i++] = (u64)le32_to_cpu(stats->tmac_udp_oflow) << 32 |
6280 le32_to_cpu(stats->tmac_udp);
6281 tmp_stats[i++] =
6282 (u64)le32_to_cpu(stats->rmac_vld_frms_oflow) << 32 |
6283 le32_to_cpu(stats->rmac_vld_frms);
6284 tmp_stats[i++] =
6285 (u64)le32_to_cpu(stats->rmac_data_octets_oflow) << 32 |
6286 le32_to_cpu(stats->rmac_data_octets);
6287 tmp_stats[i++] = le64_to_cpu(stats->rmac_fcs_err_frms);
6288 tmp_stats[i++] = le64_to_cpu(stats->rmac_drop_frms);
6289 tmp_stats[i++] =
6290 (u64)le32_to_cpu(stats->rmac_vld_mcst_frms_oflow) << 32 |
6291 le32_to_cpu(stats->rmac_vld_mcst_frms);
6292 tmp_stats[i++] =
6293 (u64)le32_to_cpu(stats->rmac_vld_bcst_frms_oflow) << 32 |
6294 le32_to_cpu(stats->rmac_vld_bcst_frms);
6295 tmp_stats[i++] = le32_to_cpu(stats->rmac_in_rng_len_err_frms);
6296 tmp_stats[i++] = le32_to_cpu(stats->rmac_out_rng_len_err_frms);
6297 tmp_stats[i++] = le64_to_cpu(stats->rmac_long_frms);
6298 tmp_stats[i++] = le64_to_cpu(stats->rmac_pause_ctrl_frms);
6299 tmp_stats[i++] = le64_to_cpu(stats->rmac_unsup_ctrl_frms);
6300 tmp_stats[i++] =
6301 (u64)le32_to_cpu(stats->rmac_ttl_octets_oflow) << 32 |
6302 le32_to_cpu(stats->rmac_ttl_octets);
6303 tmp_stats[i++] =
6304 (u64)le32_to_cpu(stats->rmac_accepted_ucst_frms_oflow) << 32
6305 | le32_to_cpu(stats->rmac_accepted_ucst_frms);
6306 tmp_stats[i++] =
6307 (u64)le32_to_cpu(stats->rmac_accepted_nucst_frms_oflow)
6308 << 32 | le32_to_cpu(stats->rmac_accepted_nucst_frms);
6309 tmp_stats[i++] =
6310 (u64)le32_to_cpu(stats->rmac_discarded_frms_oflow) << 32 |
6311 le32_to_cpu(stats->rmac_discarded_frms);
6312 tmp_stats[i++] =
6313 (u64)le32_to_cpu(stats->rmac_drop_events_oflow)
6314 << 32 | le32_to_cpu(stats->rmac_drop_events);
6315 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_less_fb_octets);
6316 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_frms);
6317 tmp_stats[i++] =
6318 (u64)le32_to_cpu(stats->rmac_usized_frms_oflow) << 32 |
6319 le32_to_cpu(stats->rmac_usized_frms);
6320 tmp_stats[i++] =
6321 (u64)le32_to_cpu(stats->rmac_osized_frms_oflow) << 32 |
6322 le32_to_cpu(stats->rmac_osized_frms);
6323 tmp_stats[i++] =
6324 (u64)le32_to_cpu(stats->rmac_frag_frms_oflow) << 32 |
6325 le32_to_cpu(stats->rmac_frag_frms);
6326 tmp_stats[i++] =
6327 (u64)le32_to_cpu(stats->rmac_jabber_frms_oflow) << 32 |
6328 le32_to_cpu(stats->rmac_jabber_frms);
6329 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_64_frms);
6330 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_65_127_frms);
6331 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_128_255_frms);
6332 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_256_511_frms);
6333 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_512_1023_frms);
6334 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_1024_1518_frms);
6335 tmp_stats[i++] =
6336 (u64)le32_to_cpu(stats->rmac_ip_oflow) << 32 |
6337 le32_to_cpu(stats->rmac_ip);
6338 tmp_stats[i++] = le64_to_cpu(stats->rmac_ip_octets);
6339 tmp_stats[i++] = le32_to_cpu(stats->rmac_hdr_err_ip);
6340 tmp_stats[i++] =
6341 (u64)le32_to_cpu(stats->rmac_drop_ip_oflow) << 32 |
6342 le32_to_cpu(stats->rmac_drop_ip);
6343 tmp_stats[i++] =
6344 (u64)le32_to_cpu(stats->rmac_icmp_oflow) << 32 |
6345 le32_to_cpu(stats->rmac_icmp);
6346 tmp_stats[i++] = le64_to_cpu(stats->rmac_tcp);
6347 tmp_stats[i++] =
6348 (u64)le32_to_cpu(stats->rmac_udp_oflow) << 32 |
6349 le32_to_cpu(stats->rmac_udp);
6350 tmp_stats[i++] =
6351 (u64)le32_to_cpu(stats->rmac_err_drp_udp_oflow) << 32 |
6352 le32_to_cpu(stats->rmac_err_drp_udp);
6353 tmp_stats[i++] = le64_to_cpu(stats->rmac_xgmii_err_sym);
6354 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q0);
6355 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q1);
6356 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q2);
6357 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q3);
6358 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q4);
6359 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q5);
6360 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q6);
6361 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q7);
6362 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q0);
6363 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q1);
6364 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q2);
6365 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q3);
6366 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q4);
6367 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q5);
6368 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q6);
6369 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q7);
6370 tmp_stats[i++] =
6371 (u64)le32_to_cpu(stats->rmac_pause_cnt_oflow) << 32 |
6372 le32_to_cpu(stats->rmac_pause_cnt);
6373 tmp_stats[i++] = le64_to_cpu(stats->rmac_xgmii_data_err_cnt);
6374 tmp_stats[i++] = le64_to_cpu(stats->rmac_xgmii_ctrl_err_cnt);
6375 tmp_stats[i++] =
6376 (u64)le32_to_cpu(stats->rmac_accepted_ip_oflow) << 32 |
6377 le32_to_cpu(stats->rmac_accepted_ip);
6378 tmp_stats[i++] = le32_to_cpu(stats->rmac_err_tcp);
6379 tmp_stats[i++] = le32_to_cpu(stats->rd_req_cnt);
6380 tmp_stats[i++] = le32_to_cpu(stats->new_rd_req_cnt);
6381 tmp_stats[i++] = le32_to_cpu(stats->new_rd_req_rtry_cnt);
6382 tmp_stats[i++] = le32_to_cpu(stats->rd_rtry_cnt);
6383 tmp_stats[i++] = le32_to_cpu(stats->wr_rtry_rd_ack_cnt);
6384 tmp_stats[i++] = le32_to_cpu(stats->wr_req_cnt);
6385 tmp_stats[i++] = le32_to_cpu(stats->new_wr_req_cnt);
6386 tmp_stats[i++] = le32_to_cpu(stats->new_wr_req_rtry_cnt);
6387 tmp_stats[i++] = le32_to_cpu(stats->wr_rtry_cnt);
6388 tmp_stats[i++] = le32_to_cpu(stats->wr_disc_cnt);
6389 tmp_stats[i++] = le32_to_cpu(stats->rd_rtry_wr_ack_cnt);
6390 tmp_stats[i++] = le32_to_cpu(stats->txp_wr_cnt);
6391 tmp_stats[i++] = le32_to_cpu(stats->txd_rd_cnt);
6392 tmp_stats[i++] = le32_to_cpu(stats->txd_wr_cnt);
6393 tmp_stats[i++] = le32_to_cpu(stats->rxd_rd_cnt);
6394 tmp_stats[i++] = le32_to_cpu(stats->rxd_wr_cnt);
6395 tmp_stats[i++] = le32_to_cpu(stats->txf_rd_cnt);
6396 tmp_stats[i++] = le32_to_cpu(stats->rxf_wr_cnt);
6397
6398 /* Enhanced statistics exist only for Hercules */
6399 if (sp->device_type == XFRAME_II_DEVICE) {
6400 tmp_stats[i++] =
6401 le64_to_cpu(stats->rmac_ttl_1519_4095_frms);
6402 tmp_stats[i++] =
6403 le64_to_cpu(stats->rmac_ttl_4096_8191_frms);
6404 tmp_stats[i++] =
6405 le64_to_cpu(stats->rmac_ttl_8192_max_frms);
6406 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_gt_max_frms);
6407 tmp_stats[i++] = le64_to_cpu(stats->rmac_osized_alt_frms);
6408 tmp_stats[i++] = le64_to_cpu(stats->rmac_jabber_alt_frms);
6409 tmp_stats[i++] = le64_to_cpu(stats->rmac_gt_max_alt_frms);
6410 tmp_stats[i++] = le64_to_cpu(stats->rmac_vlan_frms);
6411 tmp_stats[i++] = le32_to_cpu(stats->rmac_len_discard);
6412 tmp_stats[i++] = le32_to_cpu(stats->rmac_fcs_discard);
6413 tmp_stats[i++] = le32_to_cpu(stats->rmac_pf_discard);
6414 tmp_stats[i++] = le32_to_cpu(stats->rmac_da_discard);
6415 tmp_stats[i++] = le32_to_cpu(stats->rmac_red_discard);
6416 tmp_stats[i++] = le32_to_cpu(stats->rmac_rts_discard);
6417 tmp_stats[i++] = le32_to_cpu(stats->rmac_ingm_full_discard);
6418 tmp_stats[i++] = le32_to_cpu(stats->link_fault_cnt);
6419 }
6420
6421 tmp_stats[i++] = 0;
6422 tmp_stats[i++] = swstats->single_ecc_errs;
6423 tmp_stats[i++] = swstats->double_ecc_errs;
6424 tmp_stats[i++] = swstats->parity_err_cnt;
6425 tmp_stats[i++] = swstats->serious_err_cnt;
6426 tmp_stats[i++] = swstats->soft_reset_cnt;
6427 tmp_stats[i++] = swstats->fifo_full_cnt;
6428 for (k = 0; k < MAX_RX_RINGS; k++)
6429 tmp_stats[i++] = swstats->ring_full_cnt[k];
6430 tmp_stats[i++] = xstats->alarm_transceiver_temp_high;
6431 tmp_stats[i++] = xstats->alarm_transceiver_temp_low;
6432 tmp_stats[i++] = xstats->alarm_laser_bias_current_high;
6433 tmp_stats[i++] = xstats->alarm_laser_bias_current_low;
6434 tmp_stats[i++] = xstats->alarm_laser_output_power_high;
6435 tmp_stats[i++] = xstats->alarm_laser_output_power_low;
6436 tmp_stats[i++] = xstats->warn_transceiver_temp_high;
6437 tmp_stats[i++] = xstats->warn_transceiver_temp_low;
6438 tmp_stats[i++] = xstats->warn_laser_bias_current_high;
6439 tmp_stats[i++] = xstats->warn_laser_bias_current_low;
6440 tmp_stats[i++] = xstats->warn_laser_output_power_high;
6441 tmp_stats[i++] = xstats->warn_laser_output_power_low;
6442 tmp_stats[i++] = swstats->clubbed_frms_cnt;
6443 tmp_stats[i++] = swstats->sending_both;
6444 tmp_stats[i++] = swstats->outof_sequence_pkts;
6445 tmp_stats[i++] = swstats->flush_max_pkts;
6446 if (swstats->num_aggregations) {
6447 u64 tmp = swstats->sum_avg_pkts_aggregated;
6448 int count = 0;
6449 /*
6450 * Since 64-bit divide does not work on all platforms,
6451 * do repeated subtraction.
6452 */
6453 while (tmp >= swstats->num_aggregations) {
6454 tmp -= swstats->num_aggregations;
6455 count++;
6456 }
6457 tmp_stats[i++] = count;
6458 } else
6459 tmp_stats[i++] = 0;
6460 tmp_stats[i++] = swstats->mem_alloc_fail_cnt;
6461 tmp_stats[i++] = swstats->pci_map_fail_cnt;
6462 tmp_stats[i++] = swstats->watchdog_timer_cnt;
6463 tmp_stats[i++] = swstats->mem_allocated;
6464 tmp_stats[i++] = swstats->mem_freed;
6465 tmp_stats[i++] = swstats->link_up_cnt;
6466 tmp_stats[i++] = swstats->link_down_cnt;
6467 tmp_stats[i++] = swstats->link_up_time;
6468 tmp_stats[i++] = swstats->link_down_time;
6469
6470 tmp_stats[i++] = swstats->tx_buf_abort_cnt;
6471 tmp_stats[i++] = swstats->tx_desc_abort_cnt;
6472 tmp_stats[i++] = swstats->tx_parity_err_cnt;
6473 tmp_stats[i++] = swstats->tx_link_loss_cnt;
6474 tmp_stats[i++] = swstats->tx_list_proc_err_cnt;
6475
6476 tmp_stats[i++] = swstats->rx_parity_err_cnt;
6477 tmp_stats[i++] = swstats->rx_abort_cnt;
6478 tmp_stats[i++] = swstats->rx_parity_abort_cnt;
6479 tmp_stats[i++] = swstats->rx_rda_fail_cnt;
6480 tmp_stats[i++] = swstats->rx_unkn_prot_cnt;
6481 tmp_stats[i++] = swstats->rx_fcs_err_cnt;
6482 tmp_stats[i++] = swstats->rx_buf_size_err_cnt;
6483 tmp_stats[i++] = swstats->rx_rxd_corrupt_cnt;
6484 tmp_stats[i++] = swstats->rx_unkn_err_cnt;
6485 tmp_stats[i++] = swstats->tda_err_cnt;
6486 tmp_stats[i++] = swstats->pfc_err_cnt;
6487 tmp_stats[i++] = swstats->pcc_err_cnt;
6488 tmp_stats[i++] = swstats->tti_err_cnt;
6489 tmp_stats[i++] = swstats->tpa_err_cnt;
6490 tmp_stats[i++] = swstats->sm_err_cnt;
6491 tmp_stats[i++] = swstats->lso_err_cnt;
6492 tmp_stats[i++] = swstats->mac_tmac_err_cnt;
6493 tmp_stats[i++] = swstats->mac_rmac_err_cnt;
6494 tmp_stats[i++] = swstats->xgxs_txgxs_err_cnt;
6495 tmp_stats[i++] = swstats->xgxs_rxgxs_err_cnt;
6496 tmp_stats[i++] = swstats->rc_err_cnt;
6497 tmp_stats[i++] = swstats->prc_pcix_err_cnt;
6498 tmp_stats[i++] = swstats->rpa_err_cnt;
6499 tmp_stats[i++] = swstats->rda_err_cnt;
6500 tmp_stats[i++] = swstats->rti_err_cnt;
6501 tmp_stats[i++] = swstats->mc_err_cnt;
6502 }
6503
6504 static int s2io_ethtool_get_regs_len(struct net_device *dev)
6505 {
6506 return XENA_REG_SPACE;
6507 }
6508
6509
6510 static int s2io_get_eeprom_len(struct net_device *dev)
6511 {
6512 return XENA_EEPROM_SPACE;
6513 }
6514
6515 static int s2io_get_sset_count(struct net_device *dev, int sset)
6516 {
6517 struct s2io_nic *sp = netdev_priv(dev);
6518
6519 switch (sset) {
6520 case ETH_SS_TEST:
6521 return S2IO_TEST_LEN;
6522 case ETH_SS_STATS:
6523 switch (sp->device_type) {
6524 case XFRAME_I_DEVICE:
6525 return XFRAME_I_STAT_LEN;
6526 case XFRAME_II_DEVICE:
6527 return XFRAME_II_STAT_LEN;
6528 default:
6529 return 0;
6530 }
6531 default:
6532 return -EOPNOTSUPP;
6533 }
6534 }
6535
6536 static void s2io_ethtool_get_strings(struct net_device *dev,
6537 u32 stringset, u8 *data)
6538 {
6539 int stat_size = 0;
6540 struct s2io_nic *sp = netdev_priv(dev);
6541
6542 switch (stringset) {
6543 case ETH_SS_TEST:
6544 memcpy(data, s2io_gstrings, S2IO_STRINGS_LEN);
6545 break;
6546 case ETH_SS_STATS:
6547 stat_size = sizeof(ethtool_xena_stats_keys);
6548 memcpy(data, &ethtool_xena_stats_keys, stat_size);
6549 if (sp->device_type == XFRAME_II_DEVICE) {
6550 memcpy(data + stat_size,
6551 &ethtool_enhanced_stats_keys,
6552 sizeof(ethtool_enhanced_stats_keys));
6553 stat_size += sizeof(ethtool_enhanced_stats_keys);
6554 }
6555
6556 memcpy(data + stat_size, &ethtool_driver_stats_keys,
6557 sizeof(ethtool_driver_stats_keys));
6558 }
6559 }
6560
6561 static int s2io_set_features(struct net_device *dev, netdev_features_t features)
6562 {
6563 struct s2io_nic *sp = netdev_priv(dev);
6564 netdev_features_t changed = (features ^ dev->features) & NETIF_F_LRO;
6565
6566 if (changed && netif_running(dev)) {
6567 int rc;
6568
6569 s2io_stop_all_tx_queue(sp);
6570 s2io_card_down(sp);
6571 dev->features = features;
6572 rc = s2io_card_up(sp);
6573 if (rc)
6574 s2io_reset(sp);
6575 else
6576 s2io_start_all_tx_queue(sp);
6577
6578 return rc ? rc : 1;
6579 }
6580
6581 return 0;
6582 }
6583
6584 static const struct ethtool_ops netdev_ethtool_ops = {
6585 .get_drvinfo = s2io_ethtool_gdrvinfo,
6586 .get_regs_len = s2io_ethtool_get_regs_len,
6587 .get_regs = s2io_ethtool_gregs,
6588 .get_link = ethtool_op_get_link,
6589 .get_eeprom_len = s2io_get_eeprom_len,
6590 .get_eeprom = s2io_ethtool_geeprom,
6591 .set_eeprom = s2io_ethtool_seeprom,
6592 .get_ringparam = s2io_ethtool_gringparam,
6593 .get_pauseparam = s2io_ethtool_getpause_data,
6594 .set_pauseparam = s2io_ethtool_setpause_data,
6595 .self_test = s2io_ethtool_test,
6596 .get_strings = s2io_ethtool_get_strings,
6597 .set_phys_id = s2io_ethtool_set_led,
6598 .get_ethtool_stats = s2io_get_ethtool_stats,
6599 .get_sset_count = s2io_get_sset_count,
6600 .get_link_ksettings = s2io_ethtool_get_link_ksettings,
6601 .set_link_ksettings = s2io_ethtool_set_link_ksettings,
6602 };
6603
6604 /**
6605 * s2io_ioctl - Entry point for the Ioctl
6606 * @dev : Device pointer.
6607 * @ifr : An IOCTL specefic structure, that can contain a pointer to
6608 * a proprietary structure used to pass information to the driver.
6609 * @cmd : This is used to distinguish between the different commands that
6610 * can be passed to the IOCTL functions.
6611 * Description:
6612 * Currently there are no special functionality supported in IOCTL, hence
6613 * function always return EOPNOTSUPPORTED
6614 */
6615
6616 static int s2io_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6617 {
6618 return -EOPNOTSUPP;
6619 }
6620
6621 /**
6622 * s2io_change_mtu - entry point to change MTU size for the device.
6623 * @dev : device pointer.
6624 * @new_mtu : the new MTU size for the device.
6625 * Description: A driver entry point to change MTU size for the device.
6626 * Before changing the MTU the device must be stopped.
6627 * Return value:
6628 * 0 on success and an appropriate (-)ve integer as defined in errno.h
6629 * file on failure.
6630 */
6631
6632 static int s2io_change_mtu(struct net_device *dev, int new_mtu)
6633 {
6634 struct s2io_nic *sp = netdev_priv(dev);
6635 int ret = 0;
6636
6637 dev->mtu = new_mtu;
6638 if (netif_running(dev)) {
6639 s2io_stop_all_tx_queue(sp);
6640 s2io_card_down(sp);
6641 ret = s2io_card_up(sp);
6642 if (ret) {
6643 DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n",
6644 __func__);
6645 return ret;
6646 }
6647 s2io_wake_all_tx_queue(sp);
6648 } else { /* Device is down */
6649 struct XENA_dev_config __iomem *bar0 = sp->bar0;
6650 u64 val64 = new_mtu;
6651
6652 writeq(vBIT(val64, 2, 14), &bar0->rmac_max_pyld_len);
6653 }
6654
6655 return ret;
6656 }
6657
6658 /**
6659 * s2io_set_link - Set the LInk status
6660 * @data: long pointer to device private structue
6661 * Description: Sets the link status for the adapter
6662 */
6663
6664 static void s2io_set_link(struct work_struct *work)
6665 {
6666 struct s2io_nic *nic = container_of(work, struct s2io_nic,
6667 set_link_task);
6668 struct net_device *dev = nic->dev;
6669 struct XENA_dev_config __iomem *bar0 = nic->bar0;
6670 register u64 val64;
6671 u16 subid;
6672
6673 rtnl_lock();
6674
6675 if (!netif_running(dev))
6676 goto out_unlock;
6677
6678 if (test_and_set_bit(__S2IO_STATE_LINK_TASK, &(nic->state))) {
6679 /* The card is being reset, no point doing anything */
6680 goto out_unlock;
6681 }
6682
6683 subid = nic->pdev->subsystem_device;
6684 if (s2io_link_fault_indication(nic) == MAC_RMAC_ERR_TIMER) {
6685 /*
6686 * Allow a small delay for the NICs self initiated
6687 * cleanup to complete.
6688 */
6689 msleep(100);
6690 }
6691
6692 val64 = readq(&bar0->adapter_status);
6693 if (LINK_IS_UP(val64)) {
6694 if (!(readq(&bar0->adapter_control) & ADAPTER_CNTL_EN)) {
6695 if (verify_xena_quiescence(nic)) {
6696 val64 = readq(&bar0->adapter_control);
6697 val64 |= ADAPTER_CNTL_EN;
6698 writeq(val64, &bar0->adapter_control);
6699 if (CARDS_WITH_FAULTY_LINK_INDICATORS(
6700 nic->device_type, subid)) {
6701 val64 = readq(&bar0->gpio_control);
6702 val64 |= GPIO_CTRL_GPIO_0;
6703 writeq(val64, &bar0->gpio_control);
6704 val64 = readq(&bar0->gpio_control);
6705 } else {
6706 val64 |= ADAPTER_LED_ON;
6707 writeq(val64, &bar0->adapter_control);
6708 }
6709 nic->device_enabled_once = true;
6710 } else {
6711 DBG_PRINT(ERR_DBG,
6712 "%s: Error: device is not Quiescent\n",
6713 dev->name);
6714 s2io_stop_all_tx_queue(nic);
6715 }
6716 }
6717 val64 = readq(&bar0->adapter_control);
6718 val64 |= ADAPTER_LED_ON;
6719 writeq(val64, &bar0->adapter_control);
6720 s2io_link(nic, LINK_UP);
6721 } else {
6722 if (CARDS_WITH_FAULTY_LINK_INDICATORS(nic->device_type,
6723 subid)) {
6724 val64 = readq(&bar0->gpio_control);
6725 val64 &= ~GPIO_CTRL_GPIO_0;
6726 writeq(val64, &bar0->gpio_control);
6727 val64 = readq(&bar0->gpio_control);
6728 }
6729 /* turn off LED */
6730 val64 = readq(&bar0->adapter_control);
6731 val64 = val64 & (~ADAPTER_LED_ON);
6732 writeq(val64, &bar0->adapter_control);
6733 s2io_link(nic, LINK_DOWN);
6734 }
6735 clear_bit(__S2IO_STATE_LINK_TASK, &(nic->state));
6736
6737 out_unlock:
6738 rtnl_unlock();
6739 }
6740
6741 static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
6742 struct buffAdd *ba,
6743 struct sk_buff **skb, u64 *temp0, u64 *temp1,
6744 u64 *temp2, int size)
6745 {
6746 struct net_device *dev = sp->dev;
6747 struct swStat *stats = &sp->mac_control.stats_info->sw_stat;
6748
6749 if ((sp->rxd_mode == RXD_MODE_1) && (rxdp->Host_Control == 0)) {
6750 struct RxD1 *rxdp1 = (struct RxD1 *)rxdp;
6751 /* allocate skb */
6752 if (*skb) {
6753 DBG_PRINT(INFO_DBG, "SKB is not NULL\n");
6754 /*
6755 * As Rx frame are not going to be processed,
6756 * using same mapped address for the Rxd
6757 * buffer pointer
6758 */
6759 rxdp1->Buffer0_ptr = *temp0;
6760 } else {
6761 *skb = netdev_alloc_skb(dev, size);
6762 if (!(*skb)) {
6763 DBG_PRINT(INFO_DBG,
6764 "%s: Out of memory to allocate %s\n",
6765 dev->name, "1 buf mode SKBs");
6766 stats->mem_alloc_fail_cnt++;
6767 return -ENOMEM ;
6768 }
6769 stats->mem_allocated += (*skb)->truesize;
6770 /* storing the mapped addr in a temp variable
6771 * such it will be used for next rxd whose
6772 * Host Control is NULL
6773 */
6774 rxdp1->Buffer0_ptr = *temp0 =
6775 pci_map_single(sp->pdev, (*skb)->data,
6776 size - NET_IP_ALIGN,
6777 PCI_DMA_FROMDEVICE);
6778 if (pci_dma_mapping_error(sp->pdev, rxdp1->Buffer0_ptr))
6779 goto memalloc_failed;
6780 rxdp->Host_Control = (unsigned long) (*skb);
6781 }
6782 } else if ((sp->rxd_mode == RXD_MODE_3B) && (rxdp->Host_Control == 0)) {
6783 struct RxD3 *rxdp3 = (struct RxD3 *)rxdp;
6784 /* Two buffer Mode */
6785 if (*skb) {
6786 rxdp3->Buffer2_ptr = *temp2;
6787 rxdp3->Buffer0_ptr = *temp0;
6788 rxdp3->Buffer1_ptr = *temp1;
6789 } else {
6790 *skb = netdev_alloc_skb(dev, size);
6791 if (!(*skb)) {
6792 DBG_PRINT(INFO_DBG,
6793 "%s: Out of memory to allocate %s\n",
6794 dev->name,
6795 "2 buf mode SKBs");
6796 stats->mem_alloc_fail_cnt++;
6797 return -ENOMEM;
6798 }
6799 stats->mem_allocated += (*skb)->truesize;
6800 rxdp3->Buffer2_ptr = *temp2 =
6801 pci_map_single(sp->pdev, (*skb)->data,
6802 dev->mtu + 4,
6803 PCI_DMA_FROMDEVICE);
6804 if (pci_dma_mapping_error(sp->pdev, rxdp3->Buffer2_ptr))
6805 goto memalloc_failed;
6806 rxdp3->Buffer0_ptr = *temp0 =
6807 pci_map_single(sp->pdev, ba->ba_0, BUF0_LEN,
6808 PCI_DMA_FROMDEVICE);
6809 if (pci_dma_mapping_error(sp->pdev,
6810 rxdp3->Buffer0_ptr)) {
6811 pci_unmap_single(sp->pdev,
6812 (dma_addr_t)rxdp3->Buffer2_ptr,
6813 dev->mtu + 4,
6814 PCI_DMA_FROMDEVICE);
6815 goto memalloc_failed;
6816 }
6817 rxdp->Host_Control = (unsigned long) (*skb);
6818
6819 /* Buffer-1 will be dummy buffer not used */
6820 rxdp3->Buffer1_ptr = *temp1 =
6821 pci_map_single(sp->pdev, ba->ba_1, BUF1_LEN,
6822 PCI_DMA_FROMDEVICE);
6823 if (pci_dma_mapping_error(sp->pdev,
6824 rxdp3->Buffer1_ptr)) {
6825 pci_unmap_single(sp->pdev,
6826 (dma_addr_t)rxdp3->Buffer0_ptr,
6827 BUF0_LEN, PCI_DMA_FROMDEVICE);
6828 pci_unmap_single(sp->pdev,
6829 (dma_addr_t)rxdp3->Buffer2_ptr,
6830 dev->mtu + 4,
6831 PCI_DMA_FROMDEVICE);
6832 goto memalloc_failed;
6833 }
6834 }
6835 }
6836 return 0;
6837
6838 memalloc_failed:
6839 stats->pci_map_fail_cnt++;
6840 stats->mem_freed += (*skb)->truesize;
6841 dev_kfree_skb(*skb);
6842 return -ENOMEM;
6843 }
6844
6845 static void set_rxd_buffer_size(struct s2io_nic *sp, struct RxD_t *rxdp,
6846 int size)
6847 {
6848 struct net_device *dev = sp->dev;
6849 if (sp->rxd_mode == RXD_MODE_1) {
6850 rxdp->Control_2 = SET_BUFFER0_SIZE_1(size - NET_IP_ALIGN);
6851 } else if (sp->rxd_mode == RXD_MODE_3B) {
6852 rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
6853 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
6854 rxdp->Control_2 |= SET_BUFFER2_SIZE_3(dev->mtu + 4);
6855 }
6856 }
6857
6858 static int rxd_owner_bit_reset(struct s2io_nic *sp)
6859 {
6860 int i, j, k, blk_cnt = 0, size;
6861 struct config_param *config = &sp->config;
6862 struct mac_info *mac_control = &sp->mac_control;
6863 struct net_device *dev = sp->dev;
6864 struct RxD_t *rxdp = NULL;
6865 struct sk_buff *skb = NULL;
6866 struct buffAdd *ba = NULL;
6867 u64 temp0_64 = 0, temp1_64 = 0, temp2_64 = 0;
6868
6869 /* Calculate the size based on ring mode */
6870 size = dev->mtu + HEADER_ETHERNET_II_802_3_SIZE +
6871 HEADER_802_2_SIZE + HEADER_SNAP_SIZE;
6872 if (sp->rxd_mode == RXD_MODE_1)
6873 size += NET_IP_ALIGN;
6874 else if (sp->rxd_mode == RXD_MODE_3B)
6875 size = dev->mtu + ALIGN_SIZE + BUF0_LEN + 4;
6876
6877 for (i = 0; i < config->rx_ring_num; i++) {
6878 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
6879 struct ring_info *ring = &mac_control->rings[i];
6880
6881 blk_cnt = rx_cfg->num_rxd / (rxd_count[sp->rxd_mode] + 1);
6882
6883 for (j = 0; j < blk_cnt; j++) {
6884 for (k = 0; k < rxd_count[sp->rxd_mode]; k++) {
6885 rxdp = ring->rx_blocks[j].rxds[k].virt_addr;
6886 if (sp->rxd_mode == RXD_MODE_3B)
6887 ba = &ring->ba[j][k];
6888 if (set_rxd_buffer_pointer(sp, rxdp, ba, &skb,
6889 &temp0_64,
6890 &temp1_64,
6891 &temp2_64,
6892 size) == -ENOMEM) {
6893 return 0;
6894 }
6895
6896 set_rxd_buffer_size(sp, rxdp, size);
6897 dma_wmb();
6898 /* flip the Ownership bit to Hardware */
6899 rxdp->Control_1 |= RXD_OWN_XENA;
6900 }
6901 }
6902 }
6903 return 0;
6904
6905 }
6906
6907 static int s2io_add_isr(struct s2io_nic *sp)
6908 {
6909 int ret = 0;
6910 struct net_device *dev = sp->dev;
6911 int err = 0;
6912
6913 if (sp->config.intr_type == MSI_X)
6914 ret = s2io_enable_msi_x(sp);
6915 if (ret) {
6916 DBG_PRINT(ERR_DBG, "%s: Defaulting to INTA\n", dev->name);
6917 sp->config.intr_type = INTA;
6918 }
6919
6920 /*
6921 * Store the values of the MSIX table in
6922 * the struct s2io_nic structure
6923 */
6924 store_xmsi_data(sp);
6925
6926 /* After proper initialization of H/W, register ISR */
6927 if (sp->config.intr_type == MSI_X) {
6928 int i, msix_rx_cnt = 0;
6929
6930 for (i = 0; i < sp->num_entries; i++) {
6931 if (sp->s2io_entries[i].in_use == MSIX_FLG) {
6932 if (sp->s2io_entries[i].type ==
6933 MSIX_RING_TYPE) {
6934 snprintf(sp->desc[i],
6935 sizeof(sp->desc[i]),
6936 "%s:MSI-X-%d-RX",
6937 dev->name, i);
6938 err = request_irq(sp->entries[i].vector,
6939 s2io_msix_ring_handle,
6940 0,
6941 sp->desc[i],
6942 sp->s2io_entries[i].arg);
6943 } else if (sp->s2io_entries[i].type ==
6944 MSIX_ALARM_TYPE) {
6945 snprintf(sp->desc[i],
6946 sizeof(sp->desc[i]),
6947 "%s:MSI-X-%d-TX",
6948 dev->name, i);
6949 err = request_irq(sp->entries[i].vector,
6950 s2io_msix_fifo_handle,
6951 0,
6952 sp->desc[i],
6953 sp->s2io_entries[i].arg);
6954
6955 }
6956 /* if either data or addr is zero print it. */
6957 if (!(sp->msix_info[i].addr &&
6958 sp->msix_info[i].data)) {
6959 DBG_PRINT(ERR_DBG,
6960 "%s @Addr:0x%llx Data:0x%llx\n",
6961 sp->desc[i],
6962 (unsigned long long)
6963 sp->msix_info[i].addr,
6964 (unsigned long long)
6965 ntohl(sp->msix_info[i].data));
6966 } else
6967 msix_rx_cnt++;
6968 if (err) {
6969 remove_msix_isr(sp);
6970
6971 DBG_PRINT(ERR_DBG,
6972 "%s:MSI-X-%d registration "
6973 "failed\n", dev->name, i);
6974
6975 DBG_PRINT(ERR_DBG,
6976 "%s: Defaulting to INTA\n",
6977 dev->name);
6978 sp->config.intr_type = INTA;
6979 break;
6980 }
6981 sp->s2io_entries[i].in_use =
6982 MSIX_REGISTERED_SUCCESS;
6983 }
6984 }
6985 if (!err) {
6986 pr_info("MSI-X-RX %d entries enabled\n", --msix_rx_cnt);
6987 DBG_PRINT(INFO_DBG,
6988 "MSI-X-TX entries enabled through alarm vector\n");
6989 }
6990 }
6991 if (sp->config.intr_type == INTA) {
6992 err = request_irq(sp->pdev->irq, s2io_isr, IRQF_SHARED,
6993 sp->name, dev);
6994 if (err) {
6995 DBG_PRINT(ERR_DBG, "%s: ISR registration failed\n",
6996 dev->name);
6997 return -1;
6998 }
6999 }
7000 return 0;
7001 }
7002
7003 static void s2io_rem_isr(struct s2io_nic *sp)
7004 {
7005 if (sp->config.intr_type == MSI_X)
7006 remove_msix_isr(sp);
7007 else
7008 remove_inta_isr(sp);
7009 }
7010
7011 static void do_s2io_card_down(struct s2io_nic *sp, int do_io)
7012 {
7013 int cnt = 0;
7014 struct XENA_dev_config __iomem *bar0 = sp->bar0;
7015 register u64 val64 = 0;
7016 struct config_param *config;
7017 config = &sp->config;
7018
7019 if (!is_s2io_card_up(sp))
7020 return;
7021
7022 del_timer_sync(&sp->alarm_timer);
7023 /* If s2io_set_link task is executing, wait till it completes. */
7024 while (test_and_set_bit(__S2IO_STATE_LINK_TASK, &(sp->state)))
7025 msleep(50);
7026 clear_bit(__S2IO_STATE_CARD_UP, &sp->state);
7027
7028 /* Disable napi */
7029 if (sp->config.napi) {
7030 int off = 0;
7031 if (config->intr_type == MSI_X) {
7032 for (; off < sp->config.rx_ring_num; off++)
7033 napi_disable(&sp->mac_control.rings[off].napi);
7034 }
7035 else
7036 napi_disable(&sp->napi);
7037 }
7038
7039 /* disable Tx and Rx traffic on the NIC */
7040 if (do_io)
7041 stop_nic(sp);
7042
7043 s2io_rem_isr(sp);
7044
7045 /* stop the tx queue, indicate link down */
7046 s2io_link(sp, LINK_DOWN);
7047
7048 /* Check if the device is Quiescent and then Reset the NIC */
7049 while (do_io) {
7050 /* As per the HW requirement we need to replenish the
7051 * receive buffer to avoid the ring bump. Since there is
7052 * no intention of processing the Rx frame at this pointwe are
7053 * just setting the ownership bit of rxd in Each Rx
7054 * ring to HW and set the appropriate buffer size
7055 * based on the ring mode
7056 */
7057 rxd_owner_bit_reset(sp);
7058
7059 val64 = readq(&bar0->adapter_status);
7060 if (verify_xena_quiescence(sp)) {
7061 if (verify_pcc_quiescent(sp, sp->device_enabled_once))
7062 break;
7063 }
7064
7065 msleep(50);
7066 cnt++;
7067 if (cnt == 10) {
7068 DBG_PRINT(ERR_DBG, "Device not Quiescent - "
7069 "adapter status reads 0x%llx\n",
7070 (unsigned long long)val64);
7071 break;
7072 }
7073 }
7074 if (do_io)
7075 s2io_reset(sp);
7076
7077 /* Free all Tx buffers */
7078 free_tx_buffers(sp);
7079
7080 /* Free all Rx buffers */
7081 free_rx_buffers(sp);
7082
7083 clear_bit(__S2IO_STATE_LINK_TASK, &(sp->state));
7084 }
7085
7086 static void s2io_card_down(struct s2io_nic *sp)
7087 {
7088 do_s2io_card_down(sp, 1);
7089 }
7090
7091 static int s2io_card_up(struct s2io_nic *sp)
7092 {
7093 int i, ret = 0;
7094 struct config_param *config;
7095 struct mac_info *mac_control;
7096 struct net_device *dev = sp->dev;
7097 u16 interruptible;
7098
7099 /* Initialize the H/W I/O registers */
7100 ret = init_nic(sp);
7101 if (ret != 0) {
7102 DBG_PRINT(ERR_DBG, "%s: H/W initialization failed\n",
7103 dev->name);
7104 if (ret != -EIO)
7105 s2io_reset(sp);
7106 return ret;
7107 }
7108
7109 /*
7110 * Initializing the Rx buffers. For now we are considering only 1
7111 * Rx ring and initializing buffers into 30 Rx blocks
7112 */
7113 config = &sp->config;
7114 mac_control = &sp->mac_control;
7115
7116 for (i = 0; i < config->rx_ring_num; i++) {
7117 struct ring_info *ring = &mac_control->rings[i];
7118
7119 ring->mtu = dev->mtu;
7120 ring->lro = !!(dev->features & NETIF_F_LRO);
7121 ret = fill_rx_buffers(sp, ring, 1);
7122 if (ret) {
7123 DBG_PRINT(ERR_DBG, "%s: Out of memory in Open\n",
7124 dev->name);
7125 s2io_reset(sp);
7126 free_rx_buffers(sp);
7127 return -ENOMEM;
7128 }
7129 DBG_PRINT(INFO_DBG, "Buf in ring:%d is %d:\n", i,
7130 ring->rx_bufs_left);
7131 }
7132
7133 /* Initialise napi */
7134 if (config->napi) {
7135 if (config->intr_type == MSI_X) {
7136 for (i = 0; i < sp->config.rx_ring_num; i++)
7137 napi_enable(&sp->mac_control.rings[i].napi);
7138 } else {
7139 napi_enable(&sp->napi);
7140 }
7141 }
7142
7143 /* Maintain the state prior to the open */
7144 if (sp->promisc_flg)
7145 sp->promisc_flg = 0;
7146 if (sp->m_cast_flg) {
7147 sp->m_cast_flg = 0;
7148 sp->all_multi_pos = 0;
7149 }
7150
7151 /* Setting its receive mode */
7152 s2io_set_multicast(dev);
7153
7154 if (dev->features & NETIF_F_LRO) {
7155 /* Initialize max aggregatable pkts per session based on MTU */
7156 sp->lro_max_aggr_per_sess = ((1<<16) - 1) / dev->mtu;
7157 /* Check if we can use (if specified) user provided value */
7158 if (lro_max_pkts < sp->lro_max_aggr_per_sess)
7159 sp->lro_max_aggr_per_sess = lro_max_pkts;
7160 }
7161
7162 /* Enable Rx Traffic and interrupts on the NIC */
7163 if (start_nic(sp)) {
7164 DBG_PRINT(ERR_DBG, "%s: Starting NIC failed\n", dev->name);
7165 s2io_reset(sp);
7166 free_rx_buffers(sp);
7167 return -ENODEV;
7168 }
7169
7170 /* Add interrupt service routine */
7171 if (s2io_add_isr(sp) != 0) {
7172 if (sp->config.intr_type == MSI_X)
7173 s2io_rem_isr(sp);
7174 s2io_reset(sp);
7175 free_rx_buffers(sp);
7176 return -ENODEV;
7177 }
7178
7179 timer_setup(&sp->alarm_timer, s2io_alarm_handle, 0);
7180 mod_timer(&sp->alarm_timer, jiffies + HZ / 2);
7181
7182 set_bit(__S2IO_STATE_CARD_UP, &sp->state);
7183
7184 /* Enable select interrupts */
7185 en_dis_err_alarms(sp, ENA_ALL_INTRS, ENABLE_INTRS);
7186 if (sp->config.intr_type != INTA) {
7187 interruptible = TX_TRAFFIC_INTR | TX_PIC_INTR;
7188 en_dis_able_nic_intrs(sp, interruptible, ENABLE_INTRS);
7189 } else {
7190 interruptible = TX_TRAFFIC_INTR | RX_TRAFFIC_INTR;
7191 interruptible |= TX_PIC_INTR;
7192 en_dis_able_nic_intrs(sp, interruptible, ENABLE_INTRS);
7193 }
7194
7195 return 0;
7196 }
7197
7198 /**
7199 * s2io_restart_nic - Resets the NIC.
7200 * @data : long pointer to the device private structure
7201 * Description:
7202 * This function is scheduled to be run by the s2io_tx_watchdog
7203 * function after 0.5 secs to reset the NIC. The idea is to reduce
7204 * the run time of the watch dog routine which is run holding a
7205 * spin lock.
7206 */
7207
7208 static void s2io_restart_nic(struct work_struct *work)
7209 {
7210 struct s2io_nic *sp = container_of(work, struct s2io_nic, rst_timer_task);
7211 struct net_device *dev = sp->dev;
7212
7213 rtnl_lock();
7214
7215 if (!netif_running(dev))
7216 goto out_unlock;
7217
7218 s2io_card_down(sp);
7219 if (s2io_card_up(sp)) {
7220 DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n", dev->name);
7221 }
7222 s2io_wake_all_tx_queue(sp);
7223 DBG_PRINT(ERR_DBG, "%s: was reset by Tx watchdog timer\n", dev->name);
7224 out_unlock:
7225 rtnl_unlock();
7226 }
7227
7228 /**
7229 * s2io_tx_watchdog - Watchdog for transmit side.
7230 * @dev : Pointer to net device structure
7231 * Description:
7232 * This function is triggered if the Tx Queue is stopped
7233 * for a pre-defined amount of time when the Interface is still up.
7234 * If the Interface is jammed in such a situation, the hardware is
7235 * reset (by s2io_close) and restarted again (by s2io_open) to
7236 * overcome any problem that might have been caused in the hardware.
7237 * Return value:
7238 * void
7239 */
7240
7241 static void s2io_tx_watchdog(struct net_device *dev, unsigned int txqueue)
7242 {
7243 struct s2io_nic *sp = netdev_priv(dev);
7244 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
7245
7246 if (netif_carrier_ok(dev)) {
7247 swstats->watchdog_timer_cnt++;
7248 schedule_work(&sp->rst_timer_task);
7249 swstats->soft_reset_cnt++;
7250 }
7251 }
7252
7253 /**
7254 * rx_osm_handler - To perform some OS related operations on SKB.
7255 * @sp: private member of the device structure,pointer to s2io_nic structure.
7256 * @skb : the socket buffer pointer.
7257 * @len : length of the packet
7258 * @cksum : FCS checksum of the frame.
7259 * @ring_no : the ring from which this RxD was extracted.
7260 * Description:
7261 * This function is called by the Rx interrupt serivce routine to perform
7262 * some OS related operations on the SKB before passing it to the upper
7263 * layers. It mainly checks if the checksum is OK, if so adds it to the
7264 * SKBs cksum variable, increments the Rx packet count and passes the SKB
7265 * to the upper layer. If the checksum is wrong, it increments the Rx
7266 * packet error count, frees the SKB and returns error.
7267 * Return value:
7268 * SUCCESS on success and -1 on failure.
7269 */
7270 static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp)
7271 {
7272 struct s2io_nic *sp = ring_data->nic;
7273 struct net_device *dev = ring_data->dev;
7274 struct sk_buff *skb = (struct sk_buff *)
7275 ((unsigned long)rxdp->Host_Control);
7276 int ring_no = ring_data->ring_no;
7277 u16 l3_csum, l4_csum;
7278 unsigned long long err = rxdp->Control_1 & RXD_T_CODE;
7279 struct lro *uninitialized_var(lro);
7280 u8 err_mask;
7281 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
7282
7283 skb->dev = dev;
7284
7285 if (err) {
7286 /* Check for parity error */
7287 if (err & 0x1)
7288 swstats->parity_err_cnt++;
7289
7290 err_mask = err >> 48;
7291 switch (err_mask) {
7292 case 1:
7293 swstats->rx_parity_err_cnt++;
7294 break;
7295
7296 case 2:
7297 swstats->rx_abort_cnt++;
7298 break;
7299
7300 case 3:
7301 swstats->rx_parity_abort_cnt++;
7302 break;
7303
7304 case 4:
7305 swstats->rx_rda_fail_cnt++;
7306 break;
7307
7308 case 5:
7309 swstats->rx_unkn_prot_cnt++;
7310 break;
7311
7312 case 6:
7313 swstats->rx_fcs_err_cnt++;
7314 break;
7315
7316 case 7:
7317 swstats->rx_buf_size_err_cnt++;
7318 break;
7319
7320 case 8:
7321 swstats->rx_rxd_corrupt_cnt++;
7322 break;
7323
7324 case 15:
7325 swstats->rx_unkn_err_cnt++;
7326 break;
7327 }
7328 /*
7329 * Drop the packet if bad transfer code. Exception being
7330 * 0x5, which could be due to unsupported IPv6 extension header.
7331 * In this case, we let stack handle the packet.
7332 * Note that in this case, since checksum will be incorrect,
7333 * stack will validate the same.
7334 */
7335 if (err_mask != 0x5) {
7336 DBG_PRINT(ERR_DBG, "%s: Rx error Value: 0x%x\n",
7337 dev->name, err_mask);
7338 dev->stats.rx_crc_errors++;
7339 swstats->mem_freed
7340 += skb->truesize;
7341 dev_kfree_skb(skb);
7342 ring_data->rx_bufs_left -= 1;
7343 rxdp->Host_Control = 0;
7344 return 0;
7345 }
7346 }
7347
7348 rxdp->Host_Control = 0;
7349 if (sp->rxd_mode == RXD_MODE_1) {
7350 int len = RXD_GET_BUFFER0_SIZE_1(rxdp->Control_2);
7351
7352 skb_put(skb, len);
7353 } else if (sp->rxd_mode == RXD_MODE_3B) {
7354 int get_block = ring_data->rx_curr_get_info.block_index;
7355 int get_off = ring_data->rx_curr_get_info.offset;
7356 int buf0_len = RXD_GET_BUFFER0_SIZE_3(rxdp->Control_2);
7357 int buf2_len = RXD_GET_BUFFER2_SIZE_3(rxdp->Control_2);
7358 unsigned char *buff = skb_push(skb, buf0_len);
7359
7360 struct buffAdd *ba = &ring_data->ba[get_block][get_off];
7361 memcpy(buff, ba->ba_0, buf0_len);
7362 skb_put(skb, buf2_len);
7363 }
7364
7365 if ((rxdp->Control_1 & TCP_OR_UDP_FRAME) &&
7366 ((!ring_data->lro) ||
7367 (!(rxdp->Control_1 & RXD_FRAME_IP_FRAG))) &&
7368 (dev->features & NETIF_F_RXCSUM)) {
7369 l3_csum = RXD_GET_L3_CKSUM(rxdp->Control_1);
7370 l4_csum = RXD_GET_L4_CKSUM(rxdp->Control_1);
7371 if ((l3_csum == L3_CKSUM_OK) && (l4_csum == L4_CKSUM_OK)) {
7372 /*
7373 * NIC verifies if the Checksum of the received
7374 * frame is Ok or not and accordingly returns
7375 * a flag in the RxD.
7376 */
7377 skb->ip_summed = CHECKSUM_UNNECESSARY;
7378 if (ring_data->lro) {
7379 u32 tcp_len = 0;
7380 u8 *tcp;
7381 int ret = 0;
7382
7383 ret = s2io_club_tcp_session(ring_data,
7384 skb->data, &tcp,
7385 &tcp_len, &lro,
7386 rxdp, sp);
7387 switch (ret) {
7388 case 3: /* Begin anew */
7389 lro->parent = skb;
7390 goto aggregate;
7391 case 1: /* Aggregate */
7392 lro_append_pkt(sp, lro, skb, tcp_len);
7393 goto aggregate;
7394 case 4: /* Flush session */
7395 lro_append_pkt(sp, lro, skb, tcp_len);
7396 queue_rx_frame(lro->parent,
7397 lro->vlan_tag);
7398 clear_lro_session(lro);
7399 swstats->flush_max_pkts++;
7400 goto aggregate;
7401 case 2: /* Flush both */
7402 lro->parent->data_len = lro->frags_len;
7403 swstats->sending_both++;
7404 queue_rx_frame(lro->parent,
7405 lro->vlan_tag);
7406 clear_lro_session(lro);
7407 goto send_up;
7408 case 0: /* sessions exceeded */
7409 case -1: /* non-TCP or not L2 aggregatable */
7410 case 5: /*
7411 * First pkt in session not
7412 * L3/L4 aggregatable
7413 */
7414 break;
7415 default:
7416 DBG_PRINT(ERR_DBG,
7417 "%s: Samadhana!!\n",
7418 __func__);
7419 BUG();
7420 }
7421 }
7422 } else {
7423 /*
7424 * Packet with erroneous checksum, let the
7425 * upper layers deal with it.
7426 */
7427 skb_checksum_none_assert(skb);
7428 }
7429 } else
7430 skb_checksum_none_assert(skb);
7431
7432 swstats->mem_freed += skb->truesize;
7433 send_up:
7434 skb_record_rx_queue(skb, ring_no);
7435 queue_rx_frame(skb, RXD_GET_VLAN_TAG(rxdp->Control_2));
7436 aggregate:
7437 sp->mac_control.rings[ring_no].rx_bufs_left -= 1;
7438 return SUCCESS;
7439 }
7440
7441 /**
7442 * s2io_link - stops/starts the Tx queue.
7443 * @sp : private member of the device structure, which is a pointer to the
7444 * s2io_nic structure.
7445 * @link : inidicates whether link is UP/DOWN.
7446 * Description:
7447 * This function stops/starts the Tx queue depending on whether the link
7448 * status of the NIC is is down or up. This is called by the Alarm
7449 * interrupt handler whenever a link change interrupt comes up.
7450 * Return value:
7451 * void.
7452 */
7453
7454 static void s2io_link(struct s2io_nic *sp, int link)
7455 {
7456 struct net_device *dev = sp->dev;
7457 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
7458
7459 if (link != sp->last_link_state) {
7460 init_tti(sp, link);
7461 if (link == LINK_DOWN) {
7462 DBG_PRINT(ERR_DBG, "%s: Link down\n", dev->name);
7463 s2io_stop_all_tx_queue(sp);
7464 netif_carrier_off(dev);
7465 if (swstats->link_up_cnt)
7466 swstats->link_up_time =
7467 jiffies - sp->start_time;
7468 swstats->link_down_cnt++;
7469 } else {
7470 DBG_PRINT(ERR_DBG, "%s: Link Up\n", dev->name);
7471 if (swstats->link_down_cnt)
7472 swstats->link_down_time =
7473 jiffies - sp->start_time;
7474 swstats->link_up_cnt++;
7475 netif_carrier_on(dev);
7476 s2io_wake_all_tx_queue(sp);
7477 }
7478 }
7479 sp->last_link_state = link;
7480 sp->start_time = jiffies;
7481 }
7482
7483 /**
7484 * s2io_init_pci -Initialization of PCI and PCI-X configuration registers .
7485 * @sp : private member of the device structure, which is a pointer to the
7486 * s2io_nic structure.
7487 * Description:
7488 * This function initializes a few of the PCI and PCI-X configuration registers
7489 * with recommended values.
7490 * Return value:
7491 * void
7492 */
7493
7494 static void s2io_init_pci(struct s2io_nic *sp)
7495 {
7496 u16 pci_cmd = 0, pcix_cmd = 0;
7497
7498 /* Enable Data Parity Error Recovery in PCI-X command register. */
7499 pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER,
7500 &(pcix_cmd));
7501 pci_write_config_word(sp->pdev, PCIX_COMMAND_REGISTER,
7502 (pcix_cmd | 1));
7503 pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER,
7504 &(pcix_cmd));
7505
7506 /* Set the PErr Response bit in PCI command register. */
7507 pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd);
7508 pci_write_config_word(sp->pdev, PCI_COMMAND,
7509 (pci_cmd | PCI_COMMAND_PARITY));
7510 pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd);
7511 }
7512
7513 static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type,
7514 u8 *dev_multiq)
7515 {
7516 int i;
7517
7518 if ((tx_fifo_num > MAX_TX_FIFOS) || (tx_fifo_num < 1)) {
7519 DBG_PRINT(ERR_DBG, "Requested number of tx fifos "
7520 "(%d) not supported\n", tx_fifo_num);
7521
7522 if (tx_fifo_num < 1)
7523 tx_fifo_num = 1;
7524 else
7525 tx_fifo_num = MAX_TX_FIFOS;
7526
7527 DBG_PRINT(ERR_DBG, "Default to %d tx fifos\n", tx_fifo_num);
7528 }
7529
7530 if (multiq)
7531 *dev_multiq = multiq;
7532
7533 if (tx_steering_type && (1 == tx_fifo_num)) {
7534 if (tx_steering_type != TX_DEFAULT_STEERING)
7535 DBG_PRINT(ERR_DBG,
7536 "Tx steering is not supported with "
7537 "one fifo. Disabling Tx steering.\n");
7538 tx_steering_type = NO_STEERING;
7539 }
7540
7541 if ((tx_steering_type < NO_STEERING) ||
7542 (tx_steering_type > TX_DEFAULT_STEERING)) {
7543 DBG_PRINT(ERR_DBG,
7544 "Requested transmit steering not supported\n");
7545 DBG_PRINT(ERR_DBG, "Disabling transmit steering\n");
7546 tx_steering_type = NO_STEERING;
7547 }
7548
7549 if (rx_ring_num > MAX_RX_RINGS) {
7550 DBG_PRINT(ERR_DBG,
7551 "Requested number of rx rings not supported\n");
7552 DBG_PRINT(ERR_DBG, "Default to %d rx rings\n",
7553 MAX_RX_RINGS);
7554 rx_ring_num = MAX_RX_RINGS;
7555 }
7556
7557 if ((*dev_intr_type != INTA) && (*dev_intr_type != MSI_X)) {
7558 DBG_PRINT(ERR_DBG, "Wrong intr_type requested. "
7559 "Defaulting to INTA\n");
7560 *dev_intr_type = INTA;
7561 }
7562
7563 if ((*dev_intr_type == MSI_X) &&
7564 ((pdev->device != PCI_DEVICE_ID_HERC_WIN) &&
7565 (pdev->device != PCI_DEVICE_ID_HERC_UNI))) {
7566 DBG_PRINT(ERR_DBG, "Xframe I does not support MSI_X. "
7567 "Defaulting to INTA\n");
7568 *dev_intr_type = INTA;
7569 }
7570
7571 if ((rx_ring_mode != 1) && (rx_ring_mode != 2)) {
7572 DBG_PRINT(ERR_DBG, "Requested ring mode not supported\n");
7573 DBG_PRINT(ERR_DBG, "Defaulting to 1-buffer mode\n");
7574 rx_ring_mode = 1;
7575 }
7576
7577 for (i = 0; i < MAX_RX_RINGS; i++)
7578 if (rx_ring_sz[i] > MAX_RX_BLOCKS_PER_RING) {
7579 DBG_PRINT(ERR_DBG, "Requested rx ring size not "
7580 "supported\nDefaulting to %d\n",
7581 MAX_RX_BLOCKS_PER_RING);
7582 rx_ring_sz[i] = MAX_RX_BLOCKS_PER_RING;
7583 }
7584
7585 return SUCCESS;
7586 }
7587
7588 /**
7589 * rts_ds_steer - Receive traffic steering based on IPv4 or IPv6 TOS
7590 * or Traffic class respectively.
7591 * @nic: device private variable
7592 * Description: The function configures the receive steering to
7593 * desired receive ring.
7594 * Return Value: SUCCESS on success and
7595 * '-1' on failure (endian settings incorrect).
7596 */
7597 static int rts_ds_steer(struct s2io_nic *nic, u8 ds_codepoint, u8 ring)
7598 {
7599 struct XENA_dev_config __iomem *bar0 = nic->bar0;
7600 register u64 val64 = 0;
7601
7602 if (ds_codepoint > 63)
7603 return FAILURE;
7604
7605 val64 = RTS_DS_MEM_DATA(ring);
7606 writeq(val64, &bar0->rts_ds_mem_data);
7607
7608 val64 = RTS_DS_MEM_CTRL_WE |
7609 RTS_DS_MEM_CTRL_STROBE_NEW_CMD |
7610 RTS_DS_MEM_CTRL_OFFSET(ds_codepoint);
7611
7612 writeq(val64, &bar0->rts_ds_mem_ctrl);
7613
7614 return wait_for_cmd_complete(&bar0->rts_ds_mem_ctrl,
7615 RTS_DS_MEM_CTRL_STROBE_CMD_BEING_EXECUTED,
7616 S2IO_BIT_RESET);
7617 }
7618
7619 static const struct net_device_ops s2io_netdev_ops = {
7620 .ndo_open = s2io_open,
7621 .ndo_stop = s2io_close,
7622 .ndo_get_stats = s2io_get_stats,
7623 .ndo_start_xmit = s2io_xmit,
7624 .ndo_validate_addr = eth_validate_addr,
7625 .ndo_set_rx_mode = s2io_set_multicast,
7626 .ndo_do_ioctl = s2io_ioctl,
7627 .ndo_set_mac_address = s2io_set_mac_addr,
7628 .ndo_change_mtu = s2io_change_mtu,
7629 .ndo_set_features = s2io_set_features,
7630 .ndo_tx_timeout = s2io_tx_watchdog,
7631 #ifdef CONFIG_NET_POLL_CONTROLLER
7632 .ndo_poll_controller = s2io_netpoll,
7633 #endif
7634 };
7635
7636 /**
7637 * s2io_init_nic - Initialization of the adapter .
7638 * @pdev : structure containing the PCI related information of the device.
7639 * @pre: List of PCI devices supported by the driver listed in s2io_tbl.
7640 * Description:
7641 * The function initializes an adapter identified by the pci_dec structure.
7642 * All OS related initialization including memory and device structure and
7643 * initlaization of the device private variable is done. Also the swapper
7644 * control register is initialized to enable read and write into the I/O
7645 * registers of the device.
7646 * Return value:
7647 * returns 0 on success and negative on failure.
7648 */
7649
7650 static int
7651 s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
7652 {
7653 struct s2io_nic *sp;
7654 struct net_device *dev;
7655 int i, j, ret;
7656 int dma_flag = false;
7657 u32 mac_up, mac_down;
7658 u64 val64 = 0, tmp64 = 0;
7659 struct XENA_dev_config __iomem *bar0 = NULL;
7660 u16 subid;
7661 struct config_param *config;
7662 struct mac_info *mac_control;
7663 int mode;
7664 u8 dev_intr_type = intr_type;
7665 u8 dev_multiq = 0;
7666
7667 ret = s2io_verify_parm(pdev, &dev_intr_type, &dev_multiq);
7668 if (ret)
7669 return ret;
7670
7671 ret = pci_enable_device(pdev);
7672 if (ret) {
7673 DBG_PRINT(ERR_DBG,
7674 "%s: pci_enable_device failed\n", __func__);
7675 return ret;
7676 }
7677
7678 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
7679 DBG_PRINT(INIT_DBG, "%s: Using 64bit DMA\n", __func__);
7680 dma_flag = true;
7681 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
7682 DBG_PRINT(ERR_DBG,
7683 "Unable to obtain 64bit DMA "
7684 "for consistent allocations\n");
7685 pci_disable_device(pdev);
7686 return -ENOMEM;
7687 }
7688 } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
7689 DBG_PRINT(INIT_DBG, "%s: Using 32bit DMA\n", __func__);
7690 } else {
7691 pci_disable_device(pdev);
7692 return -ENOMEM;
7693 }
7694 ret = pci_request_regions(pdev, s2io_driver_name);
7695 if (ret) {
7696 DBG_PRINT(ERR_DBG, "%s: Request Regions failed - %x\n",
7697 __func__, ret);
7698 pci_disable_device(pdev);
7699 return -ENODEV;
7700 }
7701 if (dev_multiq)
7702 dev = alloc_etherdev_mq(sizeof(struct s2io_nic), tx_fifo_num);
7703 else
7704 dev = alloc_etherdev(sizeof(struct s2io_nic));
7705 if (dev == NULL) {
7706 pci_disable_device(pdev);
7707 pci_release_regions(pdev);
7708 return -ENODEV;
7709 }
7710
7711 pci_set_master(pdev);
7712 pci_set_drvdata(pdev, dev);
7713 SET_NETDEV_DEV(dev, &pdev->dev);
7714
7715 /* Private member variable initialized to s2io NIC structure */
7716 sp = netdev_priv(dev);
7717 sp->dev = dev;
7718 sp->pdev = pdev;
7719 sp->high_dma_flag = dma_flag;
7720 sp->device_enabled_once = false;
7721 if (rx_ring_mode == 1)
7722 sp->rxd_mode = RXD_MODE_1;
7723 if (rx_ring_mode == 2)
7724 sp->rxd_mode = RXD_MODE_3B;
7725
7726 sp->config.intr_type = dev_intr_type;
7727
7728 if ((pdev->device == PCI_DEVICE_ID_HERC_WIN) ||
7729 (pdev->device == PCI_DEVICE_ID_HERC_UNI))
7730 sp->device_type = XFRAME_II_DEVICE;
7731 else
7732 sp->device_type = XFRAME_I_DEVICE;
7733
7734
7735 /* Initialize some PCI/PCI-X fields of the NIC. */
7736 s2io_init_pci(sp);
7737
7738 /*
7739 * Setting the device configuration parameters.
7740 * Most of these parameters can be specified by the user during
7741 * module insertion as they are module loadable parameters. If
7742 * these parameters are not not specified during load time, they
7743 * are initialized with default values.
7744 */
7745 config = &sp->config;
7746 mac_control = &sp->mac_control;
7747
7748 config->napi = napi;
7749 config->tx_steering_type = tx_steering_type;
7750
7751 /* Tx side parameters. */
7752 if (config->tx_steering_type == TX_PRIORITY_STEERING)
7753 config->tx_fifo_num = MAX_TX_FIFOS;
7754 else
7755 config->tx_fifo_num = tx_fifo_num;
7756
7757 /* Initialize the fifos used for tx steering */
7758 if (config->tx_fifo_num < 5) {
7759 if (config->tx_fifo_num == 1)
7760 sp->total_tcp_fifos = 1;
7761 else
7762 sp->total_tcp_fifos = config->tx_fifo_num - 1;
7763 sp->udp_fifo_idx = config->tx_fifo_num - 1;
7764 sp->total_udp_fifos = 1;
7765 sp->other_fifo_idx = sp->total_tcp_fifos - 1;
7766 } else {
7767 sp->total_tcp_fifos = (tx_fifo_num - FIFO_UDP_MAX_NUM -
7768 FIFO_OTHER_MAX_NUM);
7769 sp->udp_fifo_idx = sp->total_tcp_fifos;
7770 sp->total_udp_fifos = FIFO_UDP_MAX_NUM;
7771 sp->other_fifo_idx = sp->udp_fifo_idx + FIFO_UDP_MAX_NUM;
7772 }
7773
7774 config->multiq = dev_multiq;
7775 for (i = 0; i < config->tx_fifo_num; i++) {
7776 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
7777
7778 tx_cfg->fifo_len = tx_fifo_len[i];
7779 tx_cfg->fifo_priority = i;
7780 }
7781
7782 /* mapping the QoS priority to the configured fifos */
7783 for (i = 0; i < MAX_TX_FIFOS; i++)
7784 config->fifo_mapping[i] = fifo_map[config->tx_fifo_num - 1][i];
7785
7786 /* map the hashing selector table to the configured fifos */
7787 for (i = 0; i < config->tx_fifo_num; i++)
7788 sp->fifo_selector[i] = fifo_selector[i];
7789
7790
7791 config->tx_intr_type = TXD_INT_TYPE_UTILZ;
7792 for (i = 0; i < config->tx_fifo_num; i++) {
7793 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
7794
7795 tx_cfg->f_no_snoop = (NO_SNOOP_TXD | NO_SNOOP_TXD_BUFFER);
7796 if (tx_cfg->fifo_len < 65) {
7797 config->tx_intr_type = TXD_INT_TYPE_PER_LIST;
7798 break;
7799 }
7800 }
7801 /* + 2 because one Txd for skb->data and one Txd for UFO */
7802 config->max_txds = MAX_SKB_FRAGS + 2;
7803
7804 /* Rx side parameters. */
7805 config->rx_ring_num = rx_ring_num;
7806 for (i = 0; i < config->rx_ring_num; i++) {
7807 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
7808 struct ring_info *ring = &mac_control->rings[i];
7809
7810 rx_cfg->num_rxd = rx_ring_sz[i] * (rxd_count[sp->rxd_mode] + 1);
7811 rx_cfg->ring_priority = i;
7812 ring->rx_bufs_left = 0;
7813 ring->rxd_mode = sp->rxd_mode;
7814 ring->rxd_count = rxd_count[sp->rxd_mode];
7815 ring->pdev = sp->pdev;
7816 ring->dev = sp->dev;
7817 }
7818
7819 for (i = 0; i < rx_ring_num; i++) {
7820 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
7821
7822 rx_cfg->ring_org = RING_ORG_BUFF1;
7823 rx_cfg->f_no_snoop = (NO_SNOOP_RXD | NO_SNOOP_RXD_BUFFER);
7824 }
7825
7826 /* Setting Mac Control parameters */
7827 mac_control->rmac_pause_time = rmac_pause_time;
7828 mac_control->mc_pause_threshold_q0q3 = mc_pause_threshold_q0q3;
7829 mac_control->mc_pause_threshold_q4q7 = mc_pause_threshold_q4q7;
7830
7831
7832 /* initialize the shared memory used by the NIC and the host */
7833 if (init_shared_mem(sp)) {
7834 DBG_PRINT(ERR_DBG, "%s: Memory allocation failed\n", dev->name);
7835 ret = -ENOMEM;
7836 goto mem_alloc_failed;
7837 }
7838
7839 sp->bar0 = pci_ioremap_bar(pdev, 0);
7840 if (!sp->bar0) {
7841 DBG_PRINT(ERR_DBG, "%s: Neterion: cannot remap io mem1\n",
7842 dev->name);
7843 ret = -ENOMEM;
7844 goto bar0_remap_failed;
7845 }
7846
7847 sp->bar1 = pci_ioremap_bar(pdev, 2);
7848 if (!sp->bar1) {
7849 DBG_PRINT(ERR_DBG, "%s: Neterion: cannot remap io mem2\n",
7850 dev->name);
7851 ret = -ENOMEM;
7852 goto bar1_remap_failed;
7853 }
7854
7855 /* Initializing the BAR1 address as the start of the FIFO pointer. */
7856 for (j = 0; j < MAX_TX_FIFOS; j++) {
7857 mac_control->tx_FIFO_start[j] = sp->bar1 + (j * 0x00020000);
7858 }
7859
7860 /* Driver entry points */
7861 dev->netdev_ops = &s2io_netdev_ops;
7862 dev->ethtool_ops = &netdev_ethtool_ops;
7863 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
7864 NETIF_F_TSO | NETIF_F_TSO6 |
7865 NETIF_F_RXCSUM | NETIF_F_LRO;
7866 dev->features |= dev->hw_features |
7867 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
7868 if (sp->high_dma_flag == true)
7869 dev->features |= NETIF_F_HIGHDMA;
7870 dev->watchdog_timeo = WATCH_DOG_TIMEOUT;
7871 INIT_WORK(&sp->rst_timer_task, s2io_restart_nic);
7872 INIT_WORK(&sp->set_link_task, s2io_set_link);
7873
7874 pci_save_state(sp->pdev);
7875
7876 /* Setting swapper control on the NIC, for proper reset operation */
7877 if (s2io_set_swapper(sp)) {
7878 DBG_PRINT(ERR_DBG, "%s: swapper settings are wrong\n",
7879 dev->name);
7880 ret = -EAGAIN;
7881 goto set_swap_failed;
7882 }
7883
7884 /* Verify if the Herc works on the slot its placed into */
7885 if (sp->device_type & XFRAME_II_DEVICE) {
7886 mode = s2io_verify_pci_mode(sp);
7887 if (mode < 0) {
7888 DBG_PRINT(ERR_DBG, "%s: Unsupported PCI bus mode\n",
7889 __func__);
7890 ret = -EBADSLT;
7891 goto set_swap_failed;
7892 }
7893 }
7894
7895 if (sp->config.intr_type == MSI_X) {
7896 sp->num_entries = config->rx_ring_num + 1;
7897 ret = s2io_enable_msi_x(sp);
7898
7899 if (!ret) {
7900 ret = s2io_test_msi(sp);
7901 /* rollback MSI-X, will re-enable during add_isr() */
7902 remove_msix_isr(sp);
7903 }
7904 if (ret) {
7905
7906 DBG_PRINT(ERR_DBG,
7907 "MSI-X requested but failed to enable\n");
7908 sp->config.intr_type = INTA;
7909 }
7910 }
7911
7912 if (config->intr_type == MSI_X) {
7913 for (i = 0; i < config->rx_ring_num ; i++) {
7914 struct ring_info *ring = &mac_control->rings[i];
7915
7916 netif_napi_add(dev, &ring->napi, s2io_poll_msix, 64);
7917 }
7918 } else {
7919 netif_napi_add(dev, &sp->napi, s2io_poll_inta, 64);
7920 }
7921
7922 /* Not needed for Herc */
7923 if (sp->device_type & XFRAME_I_DEVICE) {
7924 /*
7925 * Fix for all "FFs" MAC address problems observed on
7926 * Alpha platforms
7927 */
7928 fix_mac_address(sp);
7929 s2io_reset(sp);
7930 }
7931
7932 /*
7933 * MAC address initialization.
7934 * For now only one mac address will be read and used.
7935 */
7936 bar0 = sp->bar0;
7937 val64 = RMAC_ADDR_CMD_MEM_RD | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
7938 RMAC_ADDR_CMD_MEM_OFFSET(0 + S2IO_MAC_ADDR_START_OFFSET);
7939 writeq(val64, &bar0->rmac_addr_cmd_mem);
7940 wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
7941 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
7942 S2IO_BIT_RESET);
7943 tmp64 = readq(&bar0->rmac_addr_data0_mem);
7944 mac_down = (u32)tmp64;
7945 mac_up = (u32) (tmp64 >> 32);
7946
7947 sp->def_mac_addr[0].mac_addr[3] = (u8) (mac_up);
7948 sp->def_mac_addr[0].mac_addr[2] = (u8) (mac_up >> 8);
7949 sp->def_mac_addr[0].mac_addr[1] = (u8) (mac_up >> 16);
7950 sp->def_mac_addr[0].mac_addr[0] = (u8) (mac_up >> 24);
7951 sp->def_mac_addr[0].mac_addr[5] = (u8) (mac_down >> 16);
7952 sp->def_mac_addr[0].mac_addr[4] = (u8) (mac_down >> 24);
7953
7954 /* Set the factory defined MAC address initially */
7955 dev->addr_len = ETH_ALEN;
7956 memcpy(dev->dev_addr, sp->def_mac_addr, ETH_ALEN);
7957
7958 /* initialize number of multicast & unicast MAC entries variables */
7959 if (sp->device_type == XFRAME_I_DEVICE) {
7960 config->max_mc_addr = S2IO_XENA_MAX_MC_ADDRESSES;
7961 config->max_mac_addr = S2IO_XENA_MAX_MAC_ADDRESSES;
7962 config->mc_start_offset = S2IO_XENA_MC_ADDR_START_OFFSET;
7963 } else if (sp->device_type == XFRAME_II_DEVICE) {
7964 config->max_mc_addr = S2IO_HERC_MAX_MC_ADDRESSES;
7965 config->max_mac_addr = S2IO_HERC_MAX_MAC_ADDRESSES;
7966 config->mc_start_offset = S2IO_HERC_MC_ADDR_START_OFFSET;
7967 }
7968
7969 /* MTU range: 46 - 9600 */
7970 dev->min_mtu = MIN_MTU;
7971 dev->max_mtu = S2IO_JUMBO_SIZE;
7972
7973 /* store mac addresses from CAM to s2io_nic structure */
7974 do_s2io_store_unicast_mc(sp);
7975
7976 /* Configure MSIX vector for number of rings configured plus one */
7977 if ((sp->device_type == XFRAME_II_DEVICE) &&
7978 (config->intr_type == MSI_X))
7979 sp->num_entries = config->rx_ring_num + 1;
7980
7981 /* Store the values of the MSIX table in the s2io_nic structure */
7982 store_xmsi_data(sp);
7983 /* reset Nic and bring it to known state */
7984 s2io_reset(sp);
7985
7986 /*
7987 * Initialize link state flags
7988 * and the card state parameter
7989 */
7990 sp->state = 0;
7991
7992 /* Initialize spinlocks */
7993 for (i = 0; i < sp->config.tx_fifo_num; i++) {
7994 struct fifo_info *fifo = &mac_control->fifos[i];
7995
7996 spin_lock_init(&fifo->tx_lock);
7997 }
7998
7999 /*
8000 * SXE-002: Configure link and activity LED to init state
8001 * on driver load.
8002 */
8003 subid = sp->pdev->subsystem_device;
8004 if ((subid & 0xFF) >= 0x07) {
8005 val64 = readq(&bar0->gpio_control);
8006 val64 |= 0x0000800000000000ULL;
8007 writeq(val64, &bar0->gpio_control);
8008 val64 = 0x0411040400000000ULL;
8009 writeq(val64, (void __iomem *)bar0 + 0x2700);
8010 val64 = readq(&bar0->gpio_control);
8011 }
8012
8013 sp->rx_csum = 1; /* Rx chksum verify enabled by default */
8014
8015 if (register_netdev(dev)) {
8016 DBG_PRINT(ERR_DBG, "Device registration failed\n");
8017 ret = -ENODEV;
8018 goto register_failed;
8019 }
8020 s2io_vpd_read(sp);
8021 DBG_PRINT(ERR_DBG, "Copyright(c) 2002-2010 Exar Corp.\n");
8022 DBG_PRINT(ERR_DBG, "%s: Neterion %s (rev %d)\n", dev->name,
8023 sp->product_name, pdev->revision);
8024 DBG_PRINT(ERR_DBG, "%s: Driver version %s\n", dev->name,
8025 s2io_driver_version);
8026 DBG_PRINT(ERR_DBG, "%s: MAC Address: %pM\n", dev->name, dev->dev_addr);
8027 DBG_PRINT(ERR_DBG, "Serial number: %s\n", sp->serial_num);
8028 if (sp->device_type & XFRAME_II_DEVICE) {
8029 mode = s2io_print_pci_mode(sp);
8030 if (mode < 0) {
8031 ret = -EBADSLT;
8032 unregister_netdev(dev);
8033 goto set_swap_failed;
8034 }
8035 }
8036 switch (sp->rxd_mode) {
8037 case RXD_MODE_1:
8038 DBG_PRINT(ERR_DBG, "%s: 1-Buffer receive mode enabled\n",
8039 dev->name);
8040 break;
8041 case RXD_MODE_3B:
8042 DBG_PRINT(ERR_DBG, "%s: 2-Buffer receive mode enabled\n",
8043 dev->name);
8044 break;
8045 }
8046
8047 switch (sp->config.napi) {
8048 case 0:
8049 DBG_PRINT(ERR_DBG, "%s: NAPI disabled\n", dev->name);
8050 break;
8051 case 1:
8052 DBG_PRINT(ERR_DBG, "%s: NAPI enabled\n", dev->name);
8053 break;
8054 }
8055
8056 DBG_PRINT(ERR_DBG, "%s: Using %d Tx fifo(s)\n", dev->name,
8057 sp->config.tx_fifo_num);
8058
8059 DBG_PRINT(ERR_DBG, "%s: Using %d Rx ring(s)\n", dev->name,
8060 sp->config.rx_ring_num);
8061
8062 switch (sp->config.intr_type) {
8063 case INTA:
8064 DBG_PRINT(ERR_DBG, "%s: Interrupt type INTA\n", dev->name);
8065 break;
8066 case MSI_X:
8067 DBG_PRINT(ERR_DBG, "%s: Interrupt type MSI-X\n", dev->name);
8068 break;
8069 }
8070 if (sp->config.multiq) {
8071 for (i = 0; i < sp->config.tx_fifo_num; i++) {
8072 struct fifo_info *fifo = &mac_control->fifos[i];
8073
8074 fifo->multiq = config->multiq;
8075 }
8076 DBG_PRINT(ERR_DBG, "%s: Multiqueue support enabled\n",
8077 dev->name);
8078 } else
8079 DBG_PRINT(ERR_DBG, "%s: Multiqueue support disabled\n",
8080 dev->name);
8081
8082 switch (sp->config.tx_steering_type) {
8083 case NO_STEERING:
8084 DBG_PRINT(ERR_DBG, "%s: No steering enabled for transmit\n",
8085 dev->name);
8086 break;
8087 case TX_PRIORITY_STEERING:
8088 DBG_PRINT(ERR_DBG,
8089 "%s: Priority steering enabled for transmit\n",
8090 dev->name);
8091 break;
8092 case TX_DEFAULT_STEERING:
8093 DBG_PRINT(ERR_DBG,
8094 "%s: Default steering enabled for transmit\n",
8095 dev->name);
8096 }
8097
8098 DBG_PRINT(ERR_DBG, "%s: Large receive offload enabled\n",
8099 dev->name);
8100 /* Initialize device name */
8101 snprintf(sp->name, sizeof(sp->name), "%s Neterion %s", dev->name,
8102 sp->product_name);
8103
8104 if (vlan_tag_strip)
8105 sp->vlan_strip_flag = 1;
8106 else
8107 sp->vlan_strip_flag = 0;
8108
8109 /*
8110 * Make Link state as off at this point, when the Link change
8111 * interrupt comes the state will be automatically changed to
8112 * the right state.
8113 */
8114 netif_carrier_off(dev);
8115
8116 return 0;
8117
8118 register_failed:
8119 set_swap_failed:
8120 iounmap(sp->bar1);
8121 bar1_remap_failed:
8122 iounmap(sp->bar0);
8123 bar0_remap_failed:
8124 mem_alloc_failed:
8125 free_shared_mem(sp);
8126 pci_disable_device(pdev);
8127 pci_release_regions(pdev);
8128 free_netdev(dev);
8129
8130 return ret;
8131 }
8132
8133 /**
8134 * s2io_rem_nic - Free the PCI device
8135 * @pdev: structure containing the PCI related information of the device.
8136 * Description: This function is called by the Pci subsystem to release a
8137 * PCI device and free up all resource held up by the device. This could
8138 * be in response to a Hot plug event or when the driver is to be removed
8139 * from memory.
8140 */
8141
8142 static void s2io_rem_nic(struct pci_dev *pdev)
8143 {
8144 struct net_device *dev = pci_get_drvdata(pdev);
8145 struct s2io_nic *sp;
8146
8147 if (dev == NULL) {
8148 DBG_PRINT(ERR_DBG, "Driver Data is NULL!!\n");
8149 return;
8150 }
8151
8152 sp = netdev_priv(dev);
8153
8154 cancel_work_sync(&sp->rst_timer_task);
8155 cancel_work_sync(&sp->set_link_task);
8156
8157 unregister_netdev(dev);
8158
8159 free_shared_mem(sp);
8160 iounmap(sp->bar0);
8161 iounmap(sp->bar1);
8162 pci_release_regions(pdev);
8163 free_netdev(dev);
8164 pci_disable_device(pdev);
8165 }
8166
8167 module_pci_driver(s2io_driver);
8168
8169 static int check_L2_lro_capable(u8 *buffer, struct iphdr **ip,
8170 struct tcphdr **tcp, struct RxD_t *rxdp,
8171 struct s2io_nic *sp)
8172 {
8173 int ip_off;
8174 u8 l2_type = (u8)((rxdp->Control_1 >> 37) & 0x7), ip_len;
8175
8176 if (!(rxdp->Control_1 & RXD_FRAME_PROTO_TCP)) {
8177 DBG_PRINT(INIT_DBG,
8178 "%s: Non-TCP frames not supported for LRO\n",
8179 __func__);
8180 return -1;
8181 }
8182
8183 /* Checking for DIX type or DIX type with VLAN */
8184 if ((l2_type == 0) || (l2_type == 4)) {
8185 ip_off = HEADER_ETHERNET_II_802_3_SIZE;
8186 /*
8187 * If vlan stripping is disabled and the frame is VLAN tagged,
8188 * shift the offset by the VLAN header size bytes.
8189 */
8190 if ((!sp->vlan_strip_flag) &&
8191 (rxdp->Control_1 & RXD_FRAME_VLAN_TAG))
8192 ip_off += HEADER_VLAN_SIZE;
8193 } else {
8194 /* LLC, SNAP etc are considered non-mergeable */
8195 return -1;
8196 }
8197
8198 *ip = (struct iphdr *)(buffer + ip_off);
8199 ip_len = (u8)((*ip)->ihl);
8200 ip_len <<= 2;
8201 *tcp = (struct tcphdr *)((unsigned long)*ip + ip_len);
8202
8203 return 0;
8204 }
8205
8206 static int check_for_socket_match(struct lro *lro, struct iphdr *ip,
8207 struct tcphdr *tcp)
8208 {
8209 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8210 if ((lro->iph->saddr != ip->saddr) ||
8211 (lro->iph->daddr != ip->daddr) ||
8212 (lro->tcph->source != tcp->source) ||
8213 (lro->tcph->dest != tcp->dest))
8214 return -1;
8215 return 0;
8216 }
8217
8218 static inline int get_l4_pyld_length(struct iphdr *ip, struct tcphdr *tcp)
8219 {
8220 return ntohs(ip->tot_len) - (ip->ihl << 2) - (tcp->doff << 2);
8221 }
8222
8223 static void initiate_new_session(struct lro *lro, u8 *l2h,
8224 struct iphdr *ip, struct tcphdr *tcp,
8225 u32 tcp_pyld_len, u16 vlan_tag)
8226 {
8227 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8228 lro->l2h = l2h;
8229 lro->iph = ip;
8230 lro->tcph = tcp;
8231 lro->tcp_next_seq = tcp_pyld_len + ntohl(tcp->seq);
8232 lro->tcp_ack = tcp->ack_seq;
8233 lro->sg_num = 1;
8234 lro->total_len = ntohs(ip->tot_len);
8235 lro->frags_len = 0;
8236 lro->vlan_tag = vlan_tag;
8237 /*
8238 * Check if we saw TCP timestamp.
8239 * Other consistency checks have already been done.
8240 */
8241 if (tcp->doff == 8) {
8242 __be32 *ptr;
8243 ptr = (__be32 *)(tcp+1);
8244 lro->saw_ts = 1;
8245 lro->cur_tsval = ntohl(*(ptr+1));
8246 lro->cur_tsecr = *(ptr+2);
8247 }
8248 lro->in_use = 1;
8249 }
8250
8251 static void update_L3L4_header(struct s2io_nic *sp, struct lro *lro)
8252 {
8253 struct iphdr *ip = lro->iph;
8254 struct tcphdr *tcp = lro->tcph;
8255 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
8256
8257 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8258
8259 /* Update L3 header */
8260 csum_replace2(&ip->check, ip->tot_len, htons(lro->total_len));
8261 ip->tot_len = htons(lro->total_len);
8262
8263 /* Update L4 header */
8264 tcp->ack_seq = lro->tcp_ack;
8265 tcp->window = lro->window;
8266
8267 /* Update tsecr field if this session has timestamps enabled */
8268 if (lro->saw_ts) {
8269 __be32 *ptr = (__be32 *)(tcp + 1);
8270 *(ptr+2) = lro->cur_tsecr;
8271 }
8272
8273 /* Update counters required for calculation of
8274 * average no. of packets aggregated.
8275 */
8276 swstats->sum_avg_pkts_aggregated += lro->sg_num;
8277 swstats->num_aggregations++;
8278 }
8279
8280 static void aggregate_new_rx(struct lro *lro, struct iphdr *ip,
8281 struct tcphdr *tcp, u32 l4_pyld)
8282 {
8283 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8284 lro->total_len += l4_pyld;
8285 lro->frags_len += l4_pyld;
8286 lro->tcp_next_seq += l4_pyld;
8287 lro->sg_num++;
8288
8289 /* Update ack seq no. and window ad(from this pkt) in LRO object */
8290 lro->tcp_ack = tcp->ack_seq;
8291 lro->window = tcp->window;
8292
8293 if (lro->saw_ts) {
8294 __be32 *ptr;
8295 /* Update tsecr and tsval from this packet */
8296 ptr = (__be32 *)(tcp+1);
8297 lro->cur_tsval = ntohl(*(ptr+1));
8298 lro->cur_tsecr = *(ptr + 2);
8299 }
8300 }
8301
8302 static int verify_l3_l4_lro_capable(struct lro *l_lro, struct iphdr *ip,
8303 struct tcphdr *tcp, u32 tcp_pyld_len)
8304 {
8305 u8 *ptr;
8306
8307 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8308
8309 if (!tcp_pyld_len) {
8310 /* Runt frame or a pure ack */
8311 return -1;
8312 }
8313
8314 if (ip->ihl != 5) /* IP has options */
8315 return -1;
8316
8317 /* If we see CE codepoint in IP header, packet is not mergeable */
8318 if (INET_ECN_is_ce(ipv4_get_dsfield(ip)))
8319 return -1;
8320
8321 /* If we see ECE or CWR flags in TCP header, packet is not mergeable */
8322 if (tcp->urg || tcp->psh || tcp->rst ||
8323 tcp->syn || tcp->fin ||
8324 tcp->ece || tcp->cwr || !tcp->ack) {
8325 /*
8326 * Currently recognize only the ack control word and
8327 * any other control field being set would result in
8328 * flushing the LRO session
8329 */
8330 return -1;
8331 }
8332
8333 /*
8334 * Allow only one TCP timestamp option. Don't aggregate if
8335 * any other options are detected.
8336 */
8337 if (tcp->doff != 5 && tcp->doff != 8)
8338 return -1;
8339
8340 if (tcp->doff == 8) {
8341 ptr = (u8 *)(tcp + 1);
8342 while (*ptr == TCPOPT_NOP)
8343 ptr++;
8344 if (*ptr != TCPOPT_TIMESTAMP || *(ptr+1) != TCPOLEN_TIMESTAMP)
8345 return -1;
8346
8347 /* Ensure timestamp value increases monotonically */
8348 if (l_lro)
8349 if (l_lro->cur_tsval > ntohl(*((__be32 *)(ptr+2))))
8350 return -1;
8351
8352 /* timestamp echo reply should be non-zero */
8353 if (*((__be32 *)(ptr+6)) == 0)
8354 return -1;
8355 }
8356
8357 return 0;
8358 }
8359
8360 static int s2io_club_tcp_session(struct ring_info *ring_data, u8 *buffer,
8361 u8 **tcp, u32 *tcp_len, struct lro **lro,
8362 struct RxD_t *rxdp, struct s2io_nic *sp)
8363 {
8364 struct iphdr *ip;
8365 struct tcphdr *tcph;
8366 int ret = 0, i;
8367 u16 vlan_tag = 0;
8368 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
8369
8370 ret = check_L2_lro_capable(buffer, &ip, (struct tcphdr **)tcp,
8371 rxdp, sp);
8372 if (ret)
8373 return ret;
8374
8375 DBG_PRINT(INFO_DBG, "IP Saddr: %x Daddr: %x\n", ip->saddr, ip->daddr);
8376
8377 vlan_tag = RXD_GET_VLAN_TAG(rxdp->Control_2);
8378 tcph = (struct tcphdr *)*tcp;
8379 *tcp_len = get_l4_pyld_length(ip, tcph);
8380 for (i = 0; i < MAX_LRO_SESSIONS; i++) {
8381 struct lro *l_lro = &ring_data->lro0_n[i];
8382 if (l_lro->in_use) {
8383 if (check_for_socket_match(l_lro, ip, tcph))
8384 continue;
8385 /* Sock pair matched */
8386 *lro = l_lro;
8387
8388 if ((*lro)->tcp_next_seq != ntohl(tcph->seq)) {
8389 DBG_PRINT(INFO_DBG, "%s: Out of sequence. "
8390 "expected 0x%x, actual 0x%x\n",
8391 __func__,
8392 (*lro)->tcp_next_seq,
8393 ntohl(tcph->seq));
8394
8395 swstats->outof_sequence_pkts++;
8396 ret = 2;
8397 break;
8398 }
8399
8400 if (!verify_l3_l4_lro_capable(l_lro, ip, tcph,
8401 *tcp_len))
8402 ret = 1; /* Aggregate */
8403 else
8404 ret = 2; /* Flush both */
8405 break;
8406 }
8407 }
8408
8409 if (ret == 0) {
8410 /* Before searching for available LRO objects,
8411 * check if the pkt is L3/L4 aggregatable. If not
8412 * don't create new LRO session. Just send this
8413 * packet up.
8414 */
8415 if (verify_l3_l4_lro_capable(NULL, ip, tcph, *tcp_len))
8416 return 5;
8417
8418 for (i = 0; i < MAX_LRO_SESSIONS; i++) {
8419 struct lro *l_lro = &ring_data->lro0_n[i];
8420 if (!(l_lro->in_use)) {
8421 *lro = l_lro;
8422 ret = 3; /* Begin anew */
8423 break;
8424 }
8425 }
8426 }
8427
8428 if (ret == 0) { /* sessions exceeded */
8429 DBG_PRINT(INFO_DBG, "%s: All LRO sessions already in use\n",
8430 __func__);
8431 *lro = NULL;
8432 return ret;
8433 }
8434
8435 switch (ret) {
8436 case 3:
8437 initiate_new_session(*lro, buffer, ip, tcph, *tcp_len,
8438 vlan_tag);
8439 break;
8440 case 2:
8441 update_L3L4_header(sp, *lro);
8442 break;
8443 case 1:
8444 aggregate_new_rx(*lro, ip, tcph, *tcp_len);
8445 if ((*lro)->sg_num == sp->lro_max_aggr_per_sess) {
8446 update_L3L4_header(sp, *lro);
8447 ret = 4; /* Flush the LRO */
8448 }
8449 break;
8450 default:
8451 DBG_PRINT(ERR_DBG, "%s: Don't know, can't say!!\n", __func__);
8452 break;
8453 }
8454
8455 return ret;
8456 }
8457
8458 static void clear_lro_session(struct lro *lro)
8459 {
8460 static u16 lro_struct_size = sizeof(struct lro);
8461
8462 memset(lro, 0, lro_struct_size);
8463 }
8464
8465 static void queue_rx_frame(struct sk_buff *skb, u16 vlan_tag)
8466 {
8467 struct net_device *dev = skb->dev;
8468 struct s2io_nic *sp = netdev_priv(dev);
8469
8470 skb->protocol = eth_type_trans(skb, dev);
8471 if (vlan_tag && sp->vlan_strip_flag)
8472 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
8473 if (sp->config.napi)
8474 netif_receive_skb(skb);
8475 else
8476 netif_rx(skb);
8477 }
8478
8479 static void lro_append_pkt(struct s2io_nic *sp, struct lro *lro,
8480 struct sk_buff *skb, u32 tcp_len)
8481 {
8482 struct sk_buff *first = lro->parent;
8483 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
8484
8485 first->len += tcp_len;
8486 first->data_len = lro->frags_len;
8487 skb_pull(skb, (skb->len - tcp_len));
8488 if (skb_shinfo(first)->frag_list)
8489 lro->last_frag->next = skb;
8490 else
8491 skb_shinfo(first)->frag_list = skb;
8492 first->truesize += skb->truesize;
8493 lro->last_frag = skb;
8494 swstats->clubbed_frms_cnt++;
8495 }
8496
8497 /**
8498 * s2io_io_error_detected - called when PCI error is detected
8499 * @pdev: Pointer to PCI device
8500 * @state: The current pci connection state
8501 *
8502 * This function is called after a PCI bus error affecting
8503 * this device has been detected.
8504 */
8505 static pci_ers_result_t s2io_io_error_detected(struct pci_dev *pdev,
8506 pci_channel_state_t state)
8507 {
8508 struct net_device *netdev = pci_get_drvdata(pdev);
8509 struct s2io_nic *sp = netdev_priv(netdev);
8510
8511 netif_device_detach(netdev);
8512
8513 if (state == pci_channel_io_perm_failure)
8514 return PCI_ERS_RESULT_DISCONNECT;
8515
8516 if (netif_running(netdev)) {
8517 /* Bring down the card, while avoiding PCI I/O */
8518 do_s2io_card_down(sp, 0);
8519 }
8520 pci_disable_device(pdev);
8521
8522 return PCI_ERS_RESULT_NEED_RESET;
8523 }
8524
8525 /**
8526 * s2io_io_slot_reset - called after the pci bus has been reset.
8527 * @pdev: Pointer to PCI device
8528 *
8529 * Restart the card from scratch, as if from a cold-boot.
8530 * At this point, the card has exprienced a hard reset,
8531 * followed by fixups by BIOS, and has its config space
8532 * set up identically to what it was at cold boot.
8533 */
8534 static pci_ers_result_t s2io_io_slot_reset(struct pci_dev *pdev)
8535 {
8536 struct net_device *netdev = pci_get_drvdata(pdev);
8537 struct s2io_nic *sp = netdev_priv(netdev);
8538
8539 if (pci_enable_device(pdev)) {
8540 pr_err("Cannot re-enable PCI device after reset.\n");
8541 return PCI_ERS_RESULT_DISCONNECT;
8542 }
8543
8544 pci_set_master(pdev);
8545 s2io_reset(sp);
8546
8547 return PCI_ERS_RESULT_RECOVERED;
8548 }
8549
8550 /**
8551 * s2io_io_resume - called when traffic can start flowing again.
8552 * @pdev: Pointer to PCI device
8553 *
8554 * This callback is called when the error recovery driver tells
8555 * us that its OK to resume normal operation.
8556 */
8557 static void s2io_io_resume(struct pci_dev *pdev)
8558 {
8559 struct net_device *netdev = pci_get_drvdata(pdev);
8560 struct s2io_nic *sp = netdev_priv(netdev);
8561
8562 if (netif_running(netdev)) {
8563 if (s2io_card_up(sp)) {
8564 pr_err("Can't bring device back up after reset.\n");
8565 return;
8566 }
8567
8568 if (s2io_set_mac_addr(netdev, netdev->dev_addr) == FAILURE) {
8569 s2io_card_down(sp);
8570 pr_err("Can't restore mac addr after reset.\n");
8571 return;
8572 }
8573 }
8574
8575 netif_device_attach(netdev);
8576 netif_tx_wake_all_queues(netdev);
8577 }
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