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 * ufo: This parameter used to enable/disable UDP Fragmentation Offload(UFO)
46 * Possible values '1' for enable and '0' for disable. Default is '0'
47 * vlan_tag_strip: This can be used to enable or disable vlan stripping.
48 * Possible values '1' for enable , '0' for disable.
49 * Default is '2' - which means disable in promisc mode
50 * and enable in non-promiscuous mode.
51 * multiq: This parameter used to enable/disable MULTIQUEUE support.
52 * Possible values '1' for enable and '0' for disable. Default is '0'
53 ************************************************************************/
54
55 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
56
57 #include <linux/module.h>
58 #include <linux/types.h>
59 #include <linux/errno.h>
60 #include <linux/ioport.h>
61 #include <linux/pci.h>
62 #include <linux/dma-mapping.h>
63 #include <linux/kernel.h>
64 #include <linux/netdevice.h>
65 #include <linux/etherdevice.h>
66 #include <linux/mdio.h>
67 #include <linux/skbuff.h>
68 #include <linux/init.h>
69 #include <linux/delay.h>
70 #include <linux/stddef.h>
71 #include <linux/ioctl.h>
72 #include <linux/timex.h>
73 #include <linux/ethtool.h>
74 #include <linux/workqueue.h>
75 #include <linux/if_vlan.h>
76 #include <linux/ip.h>
77 #include <linux/tcp.h>
78 #include <linux/uaccess.h>
79 #include <linux/io.h>
80 #include <linux/slab.h>
81 #include <linux/prefetch.h>
82 #include <net/tcp.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
RXD_IS_UP2DT(struct RxD_t * rxdp)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
is_s2io_card_up(const struct s2io_nic * sp)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 #define S2IO_TIMER_CONF(timer, handle, arg, exp) \
342 init_timer(&timer); \
343 timer.function = handle; \
344 timer.data = (unsigned long)arg; \
345 mod_timer(&timer, (jiffies + exp)) \
346
347 /* copy mac addr to def_mac_addr array */
do_s2io_copy_mac_addr(struct s2io_nic * sp,int offset,u64 mac_addr)348 static void do_s2io_copy_mac_addr(struct s2io_nic *sp, int offset, u64 mac_addr)
349 {
350 sp->def_mac_addr[offset].mac_addr[5] = (u8) (mac_addr);
351 sp->def_mac_addr[offset].mac_addr[4] = (u8) (mac_addr >> 8);
352 sp->def_mac_addr[offset].mac_addr[3] = (u8) (mac_addr >> 16);
353 sp->def_mac_addr[offset].mac_addr[2] = (u8) (mac_addr >> 24);
354 sp->def_mac_addr[offset].mac_addr[1] = (u8) (mac_addr >> 32);
355 sp->def_mac_addr[offset].mac_addr[0] = (u8) (mac_addr >> 40);
356 }
357
358 /*
359 * Constants to be programmed into the Xena's registers, to configure
360 * the XAUI.
361 */
362
363 #define END_SIGN 0x0
364 static const u64 herc_act_dtx_cfg[] = {
365 /* Set address */
366 0x8000051536750000ULL, 0x80000515367500E0ULL,
367 /* Write data */
368 0x8000051536750004ULL, 0x80000515367500E4ULL,
369 /* Set address */
370 0x80010515003F0000ULL, 0x80010515003F00E0ULL,
371 /* Write data */
372 0x80010515003F0004ULL, 0x80010515003F00E4ULL,
373 /* Set address */
374 0x801205150D440000ULL, 0x801205150D4400E0ULL,
375 /* Write data */
376 0x801205150D440004ULL, 0x801205150D4400E4ULL,
377 /* Set address */
378 0x80020515F2100000ULL, 0x80020515F21000E0ULL,
379 /* Write data */
380 0x80020515F2100004ULL, 0x80020515F21000E4ULL,
381 /* Done */
382 END_SIGN
383 };
384
385 static const u64 xena_dtx_cfg[] = {
386 /* Set address */
387 0x8000051500000000ULL, 0x80000515000000E0ULL,
388 /* Write data */
389 0x80000515D9350004ULL, 0x80000515D93500E4ULL,
390 /* Set address */
391 0x8001051500000000ULL, 0x80010515000000E0ULL,
392 /* Write data */
393 0x80010515001E0004ULL, 0x80010515001E00E4ULL,
394 /* Set address */
395 0x8002051500000000ULL, 0x80020515000000E0ULL,
396 /* Write data */
397 0x80020515F2100004ULL, 0x80020515F21000E4ULL,
398 END_SIGN
399 };
400
401 /*
402 * Constants for Fixing the MacAddress problem seen mostly on
403 * Alpha machines.
404 */
405 static const u64 fix_mac[] = {
406 0x0060000000000000ULL, 0x0060600000000000ULL,
407 0x0040600000000000ULL, 0x0000600000000000ULL,
408 0x0020600000000000ULL, 0x0060600000000000ULL,
409 0x0020600000000000ULL, 0x0060600000000000ULL,
410 0x0020600000000000ULL, 0x0060600000000000ULL,
411 0x0020600000000000ULL, 0x0060600000000000ULL,
412 0x0020600000000000ULL, 0x0060600000000000ULL,
413 0x0020600000000000ULL, 0x0060600000000000ULL,
414 0x0020600000000000ULL, 0x0060600000000000ULL,
415 0x0020600000000000ULL, 0x0060600000000000ULL,
416 0x0020600000000000ULL, 0x0060600000000000ULL,
417 0x0020600000000000ULL, 0x0060600000000000ULL,
418 0x0020600000000000ULL, 0x0000600000000000ULL,
419 0x0040600000000000ULL, 0x0060600000000000ULL,
420 END_SIGN
421 };
422
423 MODULE_LICENSE("GPL");
424 MODULE_VERSION(DRV_VERSION);
425
426
427 /* Module Loadable parameters. */
428 S2IO_PARM_INT(tx_fifo_num, FIFO_DEFAULT_NUM);
429 S2IO_PARM_INT(rx_ring_num, 1);
430 S2IO_PARM_INT(multiq, 0);
431 S2IO_PARM_INT(rx_ring_mode, 1);
432 S2IO_PARM_INT(use_continuous_tx_intrs, 1);
433 S2IO_PARM_INT(rmac_pause_time, 0x100);
434 S2IO_PARM_INT(mc_pause_threshold_q0q3, 187);
435 S2IO_PARM_INT(mc_pause_threshold_q4q7, 187);
436 S2IO_PARM_INT(shared_splits, 0);
437 S2IO_PARM_INT(tmac_util_period, 5);
438 S2IO_PARM_INT(rmac_util_period, 5);
439 S2IO_PARM_INT(l3l4hdr_size, 128);
440 /* 0 is no steering, 1 is Priority steering, 2 is Default steering */
441 S2IO_PARM_INT(tx_steering_type, TX_DEFAULT_STEERING);
442 /* Frequency of Rx desc syncs expressed as power of 2 */
443 S2IO_PARM_INT(rxsync_frequency, 3);
444 /* Interrupt type. Values can be 0(INTA), 2(MSI_X) */
445 S2IO_PARM_INT(intr_type, 2);
446 /* Large receive offload feature */
447
448 /* Max pkts to be aggregated by LRO at one time. If not specified,
449 * aggregation happens until we hit max IP pkt size(64K)
450 */
451 S2IO_PARM_INT(lro_max_pkts, 0xFFFF);
452 S2IO_PARM_INT(indicate_max_pkts, 0);
453
454 S2IO_PARM_INT(napi, 1);
455 S2IO_PARM_INT(ufo, 0);
456 S2IO_PARM_INT(vlan_tag_strip, NO_STRIP_IN_PROMISC);
457
458 static unsigned int tx_fifo_len[MAX_TX_FIFOS] =
459 {DEFAULT_FIFO_0_LEN, [1 ...(MAX_TX_FIFOS - 1)] = DEFAULT_FIFO_1_7_LEN};
460 static unsigned int rx_ring_sz[MAX_RX_RINGS] =
461 {[0 ...(MAX_RX_RINGS - 1)] = SMALL_BLK_CNT};
462 static unsigned int rts_frm_len[MAX_RX_RINGS] =
463 {[0 ...(MAX_RX_RINGS - 1)] = 0 };
464
465 module_param_array(tx_fifo_len, uint, NULL, 0);
466 module_param_array(rx_ring_sz, uint, NULL, 0);
467 module_param_array(rts_frm_len, uint, NULL, 0);
468
469 /*
470 * S2IO device table.
471 * This table lists all the devices that this driver supports.
472 */
473 static DEFINE_PCI_DEVICE_TABLE(s2io_tbl) = {
474 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_S2IO_WIN,
475 PCI_ANY_ID, PCI_ANY_ID},
476 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_S2IO_UNI,
477 PCI_ANY_ID, PCI_ANY_ID},
478 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_HERC_WIN,
479 PCI_ANY_ID, PCI_ANY_ID},
480 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_HERC_UNI,
481 PCI_ANY_ID, PCI_ANY_ID},
482 {0,}
483 };
484
485 MODULE_DEVICE_TABLE(pci, s2io_tbl);
486
487 static struct pci_error_handlers s2io_err_handler = {
488 .error_detected = s2io_io_error_detected,
489 .slot_reset = s2io_io_slot_reset,
490 .resume = s2io_io_resume,
491 };
492
493 static struct pci_driver s2io_driver = {
494 .name = "S2IO",
495 .id_table = s2io_tbl,
496 .probe = s2io_init_nic,
497 .remove = __devexit_p(s2io_rem_nic),
498 .err_handler = &s2io_err_handler,
499 };
500
501 /* A simplifier macro used both by init and free shared_mem Fns(). */
502 #define TXD_MEM_PAGE_CNT(len, per_each) ((len+per_each - 1) / per_each)
503
504 /* netqueue manipulation helper functions */
s2io_stop_all_tx_queue(struct s2io_nic * sp)505 static inline void s2io_stop_all_tx_queue(struct s2io_nic *sp)
506 {
507 if (!sp->config.multiq) {
508 int i;
509
510 for (i = 0; i < sp->config.tx_fifo_num; i++)
511 sp->mac_control.fifos[i].queue_state = FIFO_QUEUE_STOP;
512 }
513 netif_tx_stop_all_queues(sp->dev);
514 }
515
s2io_stop_tx_queue(struct s2io_nic * sp,int fifo_no)516 static inline void s2io_stop_tx_queue(struct s2io_nic *sp, int fifo_no)
517 {
518 if (!sp->config.multiq)
519 sp->mac_control.fifos[fifo_no].queue_state =
520 FIFO_QUEUE_STOP;
521
522 netif_tx_stop_all_queues(sp->dev);
523 }
524
s2io_start_all_tx_queue(struct s2io_nic * sp)525 static inline void s2io_start_all_tx_queue(struct s2io_nic *sp)
526 {
527 if (!sp->config.multiq) {
528 int i;
529
530 for (i = 0; i < sp->config.tx_fifo_num; i++)
531 sp->mac_control.fifos[i].queue_state = FIFO_QUEUE_START;
532 }
533 netif_tx_start_all_queues(sp->dev);
534 }
535
s2io_start_tx_queue(struct s2io_nic * sp,int fifo_no)536 static inline void s2io_start_tx_queue(struct s2io_nic *sp, int fifo_no)
537 {
538 if (!sp->config.multiq)
539 sp->mac_control.fifos[fifo_no].queue_state =
540 FIFO_QUEUE_START;
541
542 netif_tx_start_all_queues(sp->dev);
543 }
544
s2io_wake_all_tx_queue(struct s2io_nic * sp)545 static inline void s2io_wake_all_tx_queue(struct s2io_nic *sp)
546 {
547 if (!sp->config.multiq) {
548 int i;
549
550 for (i = 0; i < sp->config.tx_fifo_num; i++)
551 sp->mac_control.fifos[i].queue_state = FIFO_QUEUE_START;
552 }
553 netif_tx_wake_all_queues(sp->dev);
554 }
555
s2io_wake_tx_queue(struct fifo_info * fifo,int cnt,u8 multiq)556 static inline void s2io_wake_tx_queue(
557 struct fifo_info *fifo, int cnt, u8 multiq)
558 {
559
560 if (multiq) {
561 if (cnt && __netif_subqueue_stopped(fifo->dev, fifo->fifo_no))
562 netif_wake_subqueue(fifo->dev, fifo->fifo_no);
563 } else if (cnt && (fifo->queue_state == FIFO_QUEUE_STOP)) {
564 if (netif_queue_stopped(fifo->dev)) {
565 fifo->queue_state = FIFO_QUEUE_START;
566 netif_wake_queue(fifo->dev);
567 }
568 }
569 }
570
571 /**
572 * init_shared_mem - Allocation and Initialization of Memory
573 * @nic: Device private variable.
574 * Description: The function allocates all the memory areas shared
575 * between the NIC and the driver. This includes Tx descriptors,
576 * Rx descriptors and the statistics block.
577 */
578
init_shared_mem(struct s2io_nic * nic)579 static int init_shared_mem(struct s2io_nic *nic)
580 {
581 u32 size;
582 void *tmp_v_addr, *tmp_v_addr_next;
583 dma_addr_t tmp_p_addr, tmp_p_addr_next;
584 struct RxD_block *pre_rxd_blk = NULL;
585 int i, j, blk_cnt;
586 int lst_size, lst_per_page;
587 struct net_device *dev = nic->dev;
588 unsigned long tmp;
589 struct buffAdd *ba;
590 struct config_param *config = &nic->config;
591 struct mac_info *mac_control = &nic->mac_control;
592 unsigned long long mem_allocated = 0;
593
594 /* Allocation and initialization of TXDLs in FIFOs */
595 size = 0;
596 for (i = 0; i < config->tx_fifo_num; i++) {
597 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
598
599 size += tx_cfg->fifo_len;
600 }
601 if (size > MAX_AVAILABLE_TXDS) {
602 DBG_PRINT(ERR_DBG,
603 "Too many TxDs requested: %d, max supported: %d\n",
604 size, MAX_AVAILABLE_TXDS);
605 return -EINVAL;
606 }
607
608 size = 0;
609 for (i = 0; i < config->tx_fifo_num; i++) {
610 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
611
612 size = tx_cfg->fifo_len;
613 /*
614 * Legal values are from 2 to 8192
615 */
616 if (size < 2) {
617 DBG_PRINT(ERR_DBG, "Fifo %d: Invalid length (%d) - "
618 "Valid lengths are 2 through 8192\n",
619 i, size);
620 return -EINVAL;
621 }
622 }
623
624 lst_size = (sizeof(struct TxD) * config->max_txds);
625 lst_per_page = PAGE_SIZE / lst_size;
626
627 for (i = 0; i < config->tx_fifo_num; i++) {
628 struct fifo_info *fifo = &mac_control->fifos[i];
629 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
630 int fifo_len = tx_cfg->fifo_len;
631 int list_holder_size = fifo_len * sizeof(struct list_info_hold);
632
633 fifo->list_info = kzalloc(list_holder_size, GFP_KERNEL);
634 if (!fifo->list_info) {
635 DBG_PRINT(INFO_DBG, "Malloc failed for list_info\n");
636 return -ENOMEM;
637 }
638 mem_allocated += list_holder_size;
639 }
640 for (i = 0; i < config->tx_fifo_num; i++) {
641 int page_num = TXD_MEM_PAGE_CNT(config->tx_cfg[i].fifo_len,
642 lst_per_page);
643 struct fifo_info *fifo = &mac_control->fifos[i];
644 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
645
646 fifo->tx_curr_put_info.offset = 0;
647 fifo->tx_curr_put_info.fifo_len = tx_cfg->fifo_len - 1;
648 fifo->tx_curr_get_info.offset = 0;
649 fifo->tx_curr_get_info.fifo_len = tx_cfg->fifo_len - 1;
650 fifo->fifo_no = i;
651 fifo->nic = nic;
652 fifo->max_txds = MAX_SKB_FRAGS + 2;
653 fifo->dev = dev;
654
655 for (j = 0; j < page_num; j++) {
656 int k = 0;
657 dma_addr_t tmp_p;
658 void *tmp_v;
659 tmp_v = pci_alloc_consistent(nic->pdev,
660 PAGE_SIZE, &tmp_p);
661 if (!tmp_v) {
662 DBG_PRINT(INFO_DBG,
663 "pci_alloc_consistent failed for TxDL\n");
664 return -ENOMEM;
665 }
666 /* If we got a zero DMA address(can happen on
667 * certain platforms like PPC), reallocate.
668 * Store virtual address of page we don't want,
669 * to be freed later.
670 */
671 if (!tmp_p) {
672 mac_control->zerodma_virt_addr = tmp_v;
673 DBG_PRINT(INIT_DBG,
674 "%s: Zero DMA address for TxDL. "
675 "Virtual address %p\n",
676 dev->name, tmp_v);
677 tmp_v = pci_alloc_consistent(nic->pdev,
678 PAGE_SIZE, &tmp_p);
679 if (!tmp_v) {
680 DBG_PRINT(INFO_DBG,
681 "pci_alloc_consistent failed for TxDL\n");
682 return -ENOMEM;
683 }
684 mem_allocated += PAGE_SIZE;
685 }
686 while (k < lst_per_page) {
687 int l = (j * lst_per_page) + k;
688 if (l == tx_cfg->fifo_len)
689 break;
690 fifo->list_info[l].list_virt_addr =
691 tmp_v + (k * lst_size);
692 fifo->list_info[l].list_phy_addr =
693 tmp_p + (k * lst_size);
694 k++;
695 }
696 }
697 }
698
699 for (i = 0; i < config->tx_fifo_num; i++) {
700 struct fifo_info *fifo = &mac_control->fifos[i];
701 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
702
703 size = tx_cfg->fifo_len;
704 fifo->ufo_in_band_v = kcalloc(size, sizeof(u64), GFP_KERNEL);
705 if (!fifo->ufo_in_band_v)
706 return -ENOMEM;
707 mem_allocated += (size * sizeof(u64));
708 }
709
710 /* Allocation and initialization of RXDs in Rings */
711 size = 0;
712 for (i = 0; i < config->rx_ring_num; i++) {
713 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
714 struct ring_info *ring = &mac_control->rings[i];
715
716 if (rx_cfg->num_rxd % (rxd_count[nic->rxd_mode] + 1)) {
717 DBG_PRINT(ERR_DBG, "%s: Ring%d RxD count is not a "
718 "multiple of RxDs per Block\n",
719 dev->name, i);
720 return FAILURE;
721 }
722 size += rx_cfg->num_rxd;
723 ring->block_count = rx_cfg->num_rxd /
724 (rxd_count[nic->rxd_mode] + 1);
725 ring->pkt_cnt = rx_cfg->num_rxd - ring->block_count;
726 }
727 if (nic->rxd_mode == RXD_MODE_1)
728 size = (size * (sizeof(struct RxD1)));
729 else
730 size = (size * (sizeof(struct RxD3)));
731
732 for (i = 0; i < config->rx_ring_num; i++) {
733 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
734 struct ring_info *ring = &mac_control->rings[i];
735
736 ring->rx_curr_get_info.block_index = 0;
737 ring->rx_curr_get_info.offset = 0;
738 ring->rx_curr_get_info.ring_len = rx_cfg->num_rxd - 1;
739 ring->rx_curr_put_info.block_index = 0;
740 ring->rx_curr_put_info.offset = 0;
741 ring->rx_curr_put_info.ring_len = rx_cfg->num_rxd - 1;
742 ring->nic = nic;
743 ring->ring_no = i;
744
745 blk_cnt = rx_cfg->num_rxd / (rxd_count[nic->rxd_mode] + 1);
746 /* Allocating all the Rx blocks */
747 for (j = 0; j < blk_cnt; j++) {
748 struct rx_block_info *rx_blocks;
749 int l;
750
751 rx_blocks = &ring->rx_blocks[j];
752 size = SIZE_OF_BLOCK; /* size is always page size */
753 tmp_v_addr = pci_alloc_consistent(nic->pdev, size,
754 &tmp_p_addr);
755 if (tmp_v_addr == NULL) {
756 /*
757 * In case of failure, free_shared_mem()
758 * is called, which should free any
759 * memory that was alloced till the
760 * failure happened.
761 */
762 rx_blocks->block_virt_addr = tmp_v_addr;
763 return -ENOMEM;
764 }
765 mem_allocated += size;
766 memset(tmp_v_addr, 0, size);
767
768 size = sizeof(struct rxd_info) *
769 rxd_count[nic->rxd_mode];
770 rx_blocks->block_virt_addr = tmp_v_addr;
771 rx_blocks->block_dma_addr = tmp_p_addr;
772 rx_blocks->rxds = kmalloc(size, GFP_KERNEL);
773 if (!rx_blocks->rxds)
774 return -ENOMEM;
775 mem_allocated += size;
776 for (l = 0; l < rxd_count[nic->rxd_mode]; l++) {
777 rx_blocks->rxds[l].virt_addr =
778 rx_blocks->block_virt_addr +
779 (rxd_size[nic->rxd_mode] * l);
780 rx_blocks->rxds[l].dma_addr =
781 rx_blocks->block_dma_addr +
782 (rxd_size[nic->rxd_mode] * l);
783 }
784 }
785 /* Interlinking all Rx Blocks */
786 for (j = 0; j < blk_cnt; j++) {
787 int next = (j + 1) % blk_cnt;
788 tmp_v_addr = ring->rx_blocks[j].block_virt_addr;
789 tmp_v_addr_next = ring->rx_blocks[next].block_virt_addr;
790 tmp_p_addr = ring->rx_blocks[j].block_dma_addr;
791 tmp_p_addr_next = ring->rx_blocks[next].block_dma_addr;
792
793 pre_rxd_blk = tmp_v_addr;
794 pre_rxd_blk->reserved_2_pNext_RxD_block =
795 (unsigned long)tmp_v_addr_next;
796 pre_rxd_blk->pNext_RxD_Blk_physical =
797 (u64)tmp_p_addr_next;
798 }
799 }
800 if (nic->rxd_mode == RXD_MODE_3B) {
801 /*
802 * Allocation of Storages for buffer addresses in 2BUFF mode
803 * and the buffers as well.
804 */
805 for (i = 0; i < config->rx_ring_num; i++) {
806 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
807 struct ring_info *ring = &mac_control->rings[i];
808
809 blk_cnt = rx_cfg->num_rxd /
810 (rxd_count[nic->rxd_mode] + 1);
811 size = sizeof(struct buffAdd *) * blk_cnt;
812 ring->ba = kmalloc(size, GFP_KERNEL);
813 if (!ring->ba)
814 return -ENOMEM;
815 mem_allocated += size;
816 for (j = 0; j < blk_cnt; j++) {
817 int k = 0;
818
819 size = sizeof(struct buffAdd) *
820 (rxd_count[nic->rxd_mode] + 1);
821 ring->ba[j] = kmalloc(size, GFP_KERNEL);
822 if (!ring->ba[j])
823 return -ENOMEM;
824 mem_allocated += size;
825 while (k != rxd_count[nic->rxd_mode]) {
826 ba = &ring->ba[j][k];
827 size = BUF0_LEN + ALIGN_SIZE;
828 ba->ba_0_org = kmalloc(size, GFP_KERNEL);
829 if (!ba->ba_0_org)
830 return -ENOMEM;
831 mem_allocated += size;
832 tmp = (unsigned long)ba->ba_0_org;
833 tmp += ALIGN_SIZE;
834 tmp &= ~((unsigned long)ALIGN_SIZE);
835 ba->ba_0 = (void *)tmp;
836
837 size = BUF1_LEN + ALIGN_SIZE;
838 ba->ba_1_org = kmalloc(size, GFP_KERNEL);
839 if (!ba->ba_1_org)
840 return -ENOMEM;
841 mem_allocated += size;
842 tmp = (unsigned long)ba->ba_1_org;
843 tmp += ALIGN_SIZE;
844 tmp &= ~((unsigned long)ALIGN_SIZE);
845 ba->ba_1 = (void *)tmp;
846 k++;
847 }
848 }
849 }
850 }
851
852 /* Allocation and initialization of Statistics block */
853 size = sizeof(struct stat_block);
854 mac_control->stats_mem =
855 pci_alloc_consistent(nic->pdev, size,
856 &mac_control->stats_mem_phy);
857
858 if (!mac_control->stats_mem) {
859 /*
860 * In case of failure, free_shared_mem() is called, which
861 * should free any memory that was alloced till the
862 * failure happened.
863 */
864 return -ENOMEM;
865 }
866 mem_allocated += size;
867 mac_control->stats_mem_sz = size;
868
869 tmp_v_addr = mac_control->stats_mem;
870 mac_control->stats_info = tmp_v_addr;
871 memset(tmp_v_addr, 0, size);
872 DBG_PRINT(INIT_DBG, "%s: Ring Mem PHY: 0x%llx\n",
873 dev_name(&nic->pdev->dev), (unsigned long long)tmp_p_addr);
874 mac_control->stats_info->sw_stat.mem_allocated += mem_allocated;
875 return SUCCESS;
876 }
877
878 /**
879 * free_shared_mem - Free the allocated Memory
880 * @nic: Device private variable.
881 * Description: This function is to free all memory locations allocated by
882 * the init_shared_mem() function and return it to the kernel.
883 */
884
free_shared_mem(struct s2io_nic * nic)885 static void free_shared_mem(struct s2io_nic *nic)
886 {
887 int i, j, blk_cnt, size;
888 void *tmp_v_addr;
889 dma_addr_t tmp_p_addr;
890 int lst_size, lst_per_page;
891 struct net_device *dev;
892 int page_num = 0;
893 struct config_param *config;
894 struct mac_info *mac_control;
895 struct stat_block *stats;
896 struct swStat *swstats;
897
898 if (!nic)
899 return;
900
901 dev = nic->dev;
902
903 config = &nic->config;
904 mac_control = &nic->mac_control;
905 stats = mac_control->stats_info;
906 swstats = &stats->sw_stat;
907
908 lst_size = sizeof(struct TxD) * config->max_txds;
909 lst_per_page = PAGE_SIZE / lst_size;
910
911 for (i = 0; i < config->tx_fifo_num; i++) {
912 struct fifo_info *fifo = &mac_control->fifos[i];
913 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
914
915 page_num = TXD_MEM_PAGE_CNT(tx_cfg->fifo_len, lst_per_page);
916 for (j = 0; j < page_num; j++) {
917 int mem_blks = (j * lst_per_page);
918 struct list_info_hold *fli;
919
920 if (!fifo->list_info)
921 return;
922
923 fli = &fifo->list_info[mem_blks];
924 if (!fli->list_virt_addr)
925 break;
926 pci_free_consistent(nic->pdev, PAGE_SIZE,
927 fli->list_virt_addr,
928 fli->list_phy_addr);
929 swstats->mem_freed += PAGE_SIZE;
930 }
931 /* If we got a zero DMA address during allocation,
932 * free the page now
933 */
934 if (mac_control->zerodma_virt_addr) {
935 pci_free_consistent(nic->pdev, PAGE_SIZE,
936 mac_control->zerodma_virt_addr,
937 (dma_addr_t)0);
938 DBG_PRINT(INIT_DBG,
939 "%s: Freeing TxDL with zero DMA address. "
940 "Virtual address %p\n",
941 dev->name, mac_control->zerodma_virt_addr);
942 swstats->mem_freed += PAGE_SIZE;
943 }
944 kfree(fifo->list_info);
945 swstats->mem_freed += tx_cfg->fifo_len *
946 sizeof(struct list_info_hold);
947 }
948
949 size = SIZE_OF_BLOCK;
950 for (i = 0; i < config->rx_ring_num; i++) {
951 struct ring_info *ring = &mac_control->rings[i];
952
953 blk_cnt = ring->block_count;
954 for (j = 0; j < blk_cnt; j++) {
955 tmp_v_addr = ring->rx_blocks[j].block_virt_addr;
956 tmp_p_addr = ring->rx_blocks[j].block_dma_addr;
957 if (tmp_v_addr == NULL)
958 break;
959 pci_free_consistent(nic->pdev, size,
960 tmp_v_addr, tmp_p_addr);
961 swstats->mem_freed += size;
962 kfree(ring->rx_blocks[j].rxds);
963 swstats->mem_freed += sizeof(struct rxd_info) *
964 rxd_count[nic->rxd_mode];
965 }
966 }
967
968 if (nic->rxd_mode == RXD_MODE_3B) {
969 /* Freeing buffer storage addresses in 2BUFF mode. */
970 for (i = 0; i < config->rx_ring_num; i++) {
971 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
972 struct ring_info *ring = &mac_control->rings[i];
973
974 blk_cnt = rx_cfg->num_rxd /
975 (rxd_count[nic->rxd_mode] + 1);
976 for (j = 0; j < blk_cnt; j++) {
977 int k = 0;
978 if (!ring->ba[j])
979 continue;
980 while (k != rxd_count[nic->rxd_mode]) {
981 struct buffAdd *ba = &ring->ba[j][k];
982 kfree(ba->ba_0_org);
983 swstats->mem_freed +=
984 BUF0_LEN + ALIGN_SIZE;
985 kfree(ba->ba_1_org);
986 swstats->mem_freed +=
987 BUF1_LEN + ALIGN_SIZE;
988 k++;
989 }
990 kfree(ring->ba[j]);
991 swstats->mem_freed += sizeof(struct buffAdd) *
992 (rxd_count[nic->rxd_mode] + 1);
993 }
994 kfree(ring->ba);
995 swstats->mem_freed += sizeof(struct buffAdd *) *
996 blk_cnt;
997 }
998 }
999
1000 for (i = 0; i < nic->config.tx_fifo_num; i++) {
1001 struct fifo_info *fifo = &mac_control->fifos[i];
1002 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
1003
1004 if (fifo->ufo_in_band_v) {
1005 swstats->mem_freed += tx_cfg->fifo_len *
1006 sizeof(u64);
1007 kfree(fifo->ufo_in_band_v);
1008 }
1009 }
1010
1011 if (mac_control->stats_mem) {
1012 swstats->mem_freed += mac_control->stats_mem_sz;
1013 pci_free_consistent(nic->pdev,
1014 mac_control->stats_mem_sz,
1015 mac_control->stats_mem,
1016 mac_control->stats_mem_phy);
1017 }
1018 }
1019
1020 /**
1021 * s2io_verify_pci_mode -
1022 */
1023
s2io_verify_pci_mode(struct s2io_nic * nic)1024 static int s2io_verify_pci_mode(struct s2io_nic *nic)
1025 {
1026 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1027 register u64 val64 = 0;
1028 int mode;
1029
1030 val64 = readq(&bar0->pci_mode);
1031 mode = (u8)GET_PCI_MODE(val64);
1032
1033 if (val64 & PCI_MODE_UNKNOWN_MODE)
1034 return -1; /* Unknown PCI mode */
1035 return mode;
1036 }
1037
1038 #define NEC_VENID 0x1033
1039 #define NEC_DEVID 0x0125
s2io_on_nec_bridge(struct pci_dev * s2io_pdev)1040 static int s2io_on_nec_bridge(struct pci_dev *s2io_pdev)
1041 {
1042 struct pci_dev *tdev = NULL;
1043 while ((tdev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, tdev)) != NULL) {
1044 if (tdev->vendor == NEC_VENID && tdev->device == NEC_DEVID) {
1045 if (tdev->bus == s2io_pdev->bus->parent) {
1046 pci_dev_put(tdev);
1047 return 1;
1048 }
1049 }
1050 }
1051 return 0;
1052 }
1053
1054 static int bus_speed[8] = {33, 133, 133, 200, 266, 133, 200, 266};
1055 /**
1056 * s2io_print_pci_mode -
1057 */
s2io_print_pci_mode(struct s2io_nic * nic)1058 static int s2io_print_pci_mode(struct s2io_nic *nic)
1059 {
1060 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1061 register u64 val64 = 0;
1062 int mode;
1063 struct config_param *config = &nic->config;
1064 const char *pcimode;
1065
1066 val64 = readq(&bar0->pci_mode);
1067 mode = (u8)GET_PCI_MODE(val64);
1068
1069 if (val64 & PCI_MODE_UNKNOWN_MODE)
1070 return -1; /* Unknown PCI mode */
1071
1072 config->bus_speed = bus_speed[mode];
1073
1074 if (s2io_on_nec_bridge(nic->pdev)) {
1075 DBG_PRINT(ERR_DBG, "%s: Device is on PCI-E bus\n",
1076 nic->dev->name);
1077 return mode;
1078 }
1079
1080 switch (mode) {
1081 case PCI_MODE_PCI_33:
1082 pcimode = "33MHz PCI bus";
1083 break;
1084 case PCI_MODE_PCI_66:
1085 pcimode = "66MHz PCI bus";
1086 break;
1087 case PCI_MODE_PCIX_M1_66:
1088 pcimode = "66MHz PCIX(M1) bus";
1089 break;
1090 case PCI_MODE_PCIX_M1_100:
1091 pcimode = "100MHz PCIX(M1) bus";
1092 break;
1093 case PCI_MODE_PCIX_M1_133:
1094 pcimode = "133MHz PCIX(M1) bus";
1095 break;
1096 case PCI_MODE_PCIX_M2_66:
1097 pcimode = "133MHz PCIX(M2) bus";
1098 break;
1099 case PCI_MODE_PCIX_M2_100:
1100 pcimode = "200MHz PCIX(M2) bus";
1101 break;
1102 case PCI_MODE_PCIX_M2_133:
1103 pcimode = "266MHz PCIX(M2) bus";
1104 break;
1105 default:
1106 pcimode = "unsupported bus!";
1107 mode = -1;
1108 }
1109
1110 DBG_PRINT(ERR_DBG, "%s: Device is on %d bit %s\n",
1111 nic->dev->name, val64 & PCI_MODE_32_BITS ? 32 : 64, pcimode);
1112
1113 return mode;
1114 }
1115
1116 /**
1117 * init_tti - Initialization transmit traffic interrupt scheme
1118 * @nic: device private variable
1119 * @link: link status (UP/DOWN) used to enable/disable continuous
1120 * transmit interrupts
1121 * Description: The function configures transmit traffic interrupts
1122 * Return Value: SUCCESS on success and
1123 * '-1' on failure
1124 */
1125
init_tti(struct s2io_nic * nic,int link)1126 static int init_tti(struct s2io_nic *nic, int link)
1127 {
1128 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1129 register u64 val64 = 0;
1130 int i;
1131 struct config_param *config = &nic->config;
1132
1133 for (i = 0; i < config->tx_fifo_num; i++) {
1134 /*
1135 * TTI Initialization. Default Tx timer gets us about
1136 * 250 interrupts per sec. Continuous interrupts are enabled
1137 * by default.
1138 */
1139 if (nic->device_type == XFRAME_II_DEVICE) {
1140 int count = (nic->config.bus_speed * 125)/2;
1141 val64 = TTI_DATA1_MEM_TX_TIMER_VAL(count);
1142 } else
1143 val64 = TTI_DATA1_MEM_TX_TIMER_VAL(0x2078);
1144
1145 val64 |= TTI_DATA1_MEM_TX_URNG_A(0xA) |
1146 TTI_DATA1_MEM_TX_URNG_B(0x10) |
1147 TTI_DATA1_MEM_TX_URNG_C(0x30) |
1148 TTI_DATA1_MEM_TX_TIMER_AC_EN;
1149 if (i == 0)
1150 if (use_continuous_tx_intrs && (link == LINK_UP))
1151 val64 |= TTI_DATA1_MEM_TX_TIMER_CI_EN;
1152 writeq(val64, &bar0->tti_data1_mem);
1153
1154 if (nic->config.intr_type == MSI_X) {
1155 val64 = TTI_DATA2_MEM_TX_UFC_A(0x10) |
1156 TTI_DATA2_MEM_TX_UFC_B(0x100) |
1157 TTI_DATA2_MEM_TX_UFC_C(0x200) |
1158 TTI_DATA2_MEM_TX_UFC_D(0x300);
1159 } else {
1160 if ((nic->config.tx_steering_type ==
1161 TX_DEFAULT_STEERING) &&
1162 (config->tx_fifo_num > 1) &&
1163 (i >= nic->udp_fifo_idx) &&
1164 (i < (nic->udp_fifo_idx +
1165 nic->total_udp_fifos)))
1166 val64 = TTI_DATA2_MEM_TX_UFC_A(0x50) |
1167 TTI_DATA2_MEM_TX_UFC_B(0x80) |
1168 TTI_DATA2_MEM_TX_UFC_C(0x100) |
1169 TTI_DATA2_MEM_TX_UFC_D(0x120);
1170 else
1171 val64 = TTI_DATA2_MEM_TX_UFC_A(0x10) |
1172 TTI_DATA2_MEM_TX_UFC_B(0x20) |
1173 TTI_DATA2_MEM_TX_UFC_C(0x40) |
1174 TTI_DATA2_MEM_TX_UFC_D(0x80);
1175 }
1176
1177 writeq(val64, &bar0->tti_data2_mem);
1178
1179 val64 = TTI_CMD_MEM_WE |
1180 TTI_CMD_MEM_STROBE_NEW_CMD |
1181 TTI_CMD_MEM_OFFSET(i);
1182 writeq(val64, &bar0->tti_command_mem);
1183
1184 if (wait_for_cmd_complete(&bar0->tti_command_mem,
1185 TTI_CMD_MEM_STROBE_NEW_CMD,
1186 S2IO_BIT_RESET) != SUCCESS)
1187 return FAILURE;
1188 }
1189
1190 return SUCCESS;
1191 }
1192
1193 /**
1194 * init_nic - Initialization of hardware
1195 * @nic: device private variable
1196 * Description: The function sequentially configures every block
1197 * of the H/W from their reset values.
1198 * Return Value: SUCCESS on success and
1199 * '-1' on failure (endian settings incorrect).
1200 */
1201
init_nic(struct s2io_nic * nic)1202 static int init_nic(struct s2io_nic *nic)
1203 {
1204 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1205 struct net_device *dev = nic->dev;
1206 register u64 val64 = 0;
1207 void __iomem *add;
1208 u32 time;
1209 int i, j;
1210 int dtx_cnt = 0;
1211 unsigned long long mem_share;
1212 int mem_size;
1213 struct config_param *config = &nic->config;
1214 struct mac_info *mac_control = &nic->mac_control;
1215
1216 /* to set the swapper controle on the card */
1217 if (s2io_set_swapper(nic)) {
1218 DBG_PRINT(ERR_DBG, "ERROR: Setting Swapper failed\n");
1219 return -EIO;
1220 }
1221
1222 /*
1223 * Herc requires EOI to be removed from reset before XGXS, so..
1224 */
1225 if (nic->device_type & XFRAME_II_DEVICE) {
1226 val64 = 0xA500000000ULL;
1227 writeq(val64, &bar0->sw_reset);
1228 msleep(500);
1229 val64 = readq(&bar0->sw_reset);
1230 }
1231
1232 /* Remove XGXS from reset state */
1233 val64 = 0;
1234 writeq(val64, &bar0->sw_reset);
1235 msleep(500);
1236 val64 = readq(&bar0->sw_reset);
1237
1238 /* Ensure that it's safe to access registers by checking
1239 * RIC_RUNNING bit is reset. Check is valid only for XframeII.
1240 */
1241 if (nic->device_type == XFRAME_II_DEVICE) {
1242 for (i = 0; i < 50; i++) {
1243 val64 = readq(&bar0->adapter_status);
1244 if (!(val64 & ADAPTER_STATUS_RIC_RUNNING))
1245 break;
1246 msleep(10);
1247 }
1248 if (i == 50)
1249 return -ENODEV;
1250 }
1251
1252 /* Enable Receiving broadcasts */
1253 add = &bar0->mac_cfg;
1254 val64 = readq(&bar0->mac_cfg);
1255 val64 |= MAC_RMAC_BCAST_ENABLE;
1256 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1257 writel((u32)val64, add);
1258 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1259 writel((u32) (val64 >> 32), (add + 4));
1260
1261 /* Read registers in all blocks */
1262 val64 = readq(&bar0->mac_int_mask);
1263 val64 = readq(&bar0->mc_int_mask);
1264 val64 = readq(&bar0->xgxs_int_mask);
1265
1266 /* Set MTU */
1267 val64 = dev->mtu;
1268 writeq(vBIT(val64, 2, 14), &bar0->rmac_max_pyld_len);
1269
1270 if (nic->device_type & XFRAME_II_DEVICE) {
1271 while (herc_act_dtx_cfg[dtx_cnt] != END_SIGN) {
1272 SPECIAL_REG_WRITE(herc_act_dtx_cfg[dtx_cnt],
1273 &bar0->dtx_control, UF);
1274 if (dtx_cnt & 0x1)
1275 msleep(1); /* Necessary!! */
1276 dtx_cnt++;
1277 }
1278 } else {
1279 while (xena_dtx_cfg[dtx_cnt] != END_SIGN) {
1280 SPECIAL_REG_WRITE(xena_dtx_cfg[dtx_cnt],
1281 &bar0->dtx_control, UF);
1282 val64 = readq(&bar0->dtx_control);
1283 dtx_cnt++;
1284 }
1285 }
1286
1287 /* Tx DMA Initialization */
1288 val64 = 0;
1289 writeq(val64, &bar0->tx_fifo_partition_0);
1290 writeq(val64, &bar0->tx_fifo_partition_1);
1291 writeq(val64, &bar0->tx_fifo_partition_2);
1292 writeq(val64, &bar0->tx_fifo_partition_3);
1293
1294 for (i = 0, j = 0; i < config->tx_fifo_num; i++) {
1295 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
1296
1297 val64 |= vBIT(tx_cfg->fifo_len - 1, ((j * 32) + 19), 13) |
1298 vBIT(tx_cfg->fifo_priority, ((j * 32) + 5), 3);
1299
1300 if (i == (config->tx_fifo_num - 1)) {
1301 if (i % 2 == 0)
1302 i++;
1303 }
1304
1305 switch (i) {
1306 case 1:
1307 writeq(val64, &bar0->tx_fifo_partition_0);
1308 val64 = 0;
1309 j = 0;
1310 break;
1311 case 3:
1312 writeq(val64, &bar0->tx_fifo_partition_1);
1313 val64 = 0;
1314 j = 0;
1315 break;
1316 case 5:
1317 writeq(val64, &bar0->tx_fifo_partition_2);
1318 val64 = 0;
1319 j = 0;
1320 break;
1321 case 7:
1322 writeq(val64, &bar0->tx_fifo_partition_3);
1323 val64 = 0;
1324 j = 0;
1325 break;
1326 default:
1327 j++;
1328 break;
1329 }
1330 }
1331
1332 /*
1333 * Disable 4 PCCs for Xena1, 2 and 3 as per H/W bug
1334 * SXE-008 TRANSMIT DMA ARBITRATION ISSUE.
1335 */
1336 if ((nic->device_type == XFRAME_I_DEVICE) && (nic->pdev->revision < 4))
1337 writeq(PCC_ENABLE_FOUR, &bar0->pcc_enable);
1338
1339 val64 = readq(&bar0->tx_fifo_partition_0);
1340 DBG_PRINT(INIT_DBG, "Fifo partition at: 0x%p is: 0x%llx\n",
1341 &bar0->tx_fifo_partition_0, (unsigned long long)val64);
1342
1343 /*
1344 * Initialization of Tx_PA_CONFIG register to ignore packet
1345 * integrity checking.
1346 */
1347 val64 = readq(&bar0->tx_pa_cfg);
1348 val64 |= TX_PA_CFG_IGNORE_FRM_ERR |
1349 TX_PA_CFG_IGNORE_SNAP_OUI |
1350 TX_PA_CFG_IGNORE_LLC_CTRL |
1351 TX_PA_CFG_IGNORE_L2_ERR;
1352 writeq(val64, &bar0->tx_pa_cfg);
1353
1354 /* Rx DMA intialization. */
1355 val64 = 0;
1356 for (i = 0; i < config->rx_ring_num; i++) {
1357 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
1358
1359 val64 |= vBIT(rx_cfg->ring_priority, (5 + (i * 8)), 3);
1360 }
1361 writeq(val64, &bar0->rx_queue_priority);
1362
1363 /*
1364 * Allocating equal share of memory to all the
1365 * configured Rings.
1366 */
1367 val64 = 0;
1368 if (nic->device_type & XFRAME_II_DEVICE)
1369 mem_size = 32;
1370 else
1371 mem_size = 64;
1372
1373 for (i = 0; i < config->rx_ring_num; i++) {
1374 switch (i) {
1375 case 0:
1376 mem_share = (mem_size / config->rx_ring_num +
1377 mem_size % config->rx_ring_num);
1378 val64 |= RX_QUEUE_CFG_Q0_SZ(mem_share);
1379 continue;
1380 case 1:
1381 mem_share = (mem_size / config->rx_ring_num);
1382 val64 |= RX_QUEUE_CFG_Q1_SZ(mem_share);
1383 continue;
1384 case 2:
1385 mem_share = (mem_size / config->rx_ring_num);
1386 val64 |= RX_QUEUE_CFG_Q2_SZ(mem_share);
1387 continue;
1388 case 3:
1389 mem_share = (mem_size / config->rx_ring_num);
1390 val64 |= RX_QUEUE_CFG_Q3_SZ(mem_share);
1391 continue;
1392 case 4:
1393 mem_share = (mem_size / config->rx_ring_num);
1394 val64 |= RX_QUEUE_CFG_Q4_SZ(mem_share);
1395 continue;
1396 case 5:
1397 mem_share = (mem_size / config->rx_ring_num);
1398 val64 |= RX_QUEUE_CFG_Q5_SZ(mem_share);
1399 continue;
1400 case 6:
1401 mem_share = (mem_size / config->rx_ring_num);
1402 val64 |= RX_QUEUE_CFG_Q6_SZ(mem_share);
1403 continue;
1404 case 7:
1405 mem_share = (mem_size / config->rx_ring_num);
1406 val64 |= RX_QUEUE_CFG_Q7_SZ(mem_share);
1407 continue;
1408 }
1409 }
1410 writeq(val64, &bar0->rx_queue_cfg);
1411
1412 /*
1413 * Filling Tx round robin registers
1414 * as per the number of FIFOs for equal scheduling priority
1415 */
1416 switch (config->tx_fifo_num) {
1417 case 1:
1418 val64 = 0x0;
1419 writeq(val64, &bar0->tx_w_round_robin_0);
1420 writeq(val64, &bar0->tx_w_round_robin_1);
1421 writeq(val64, &bar0->tx_w_round_robin_2);
1422 writeq(val64, &bar0->tx_w_round_robin_3);
1423 writeq(val64, &bar0->tx_w_round_robin_4);
1424 break;
1425 case 2:
1426 val64 = 0x0001000100010001ULL;
1427 writeq(val64, &bar0->tx_w_round_robin_0);
1428 writeq(val64, &bar0->tx_w_round_robin_1);
1429 writeq(val64, &bar0->tx_w_round_robin_2);
1430 writeq(val64, &bar0->tx_w_round_robin_3);
1431 val64 = 0x0001000100000000ULL;
1432 writeq(val64, &bar0->tx_w_round_robin_4);
1433 break;
1434 case 3:
1435 val64 = 0x0001020001020001ULL;
1436 writeq(val64, &bar0->tx_w_round_robin_0);
1437 val64 = 0x0200010200010200ULL;
1438 writeq(val64, &bar0->tx_w_round_robin_1);
1439 val64 = 0x0102000102000102ULL;
1440 writeq(val64, &bar0->tx_w_round_robin_2);
1441 val64 = 0x0001020001020001ULL;
1442 writeq(val64, &bar0->tx_w_round_robin_3);
1443 val64 = 0x0200010200000000ULL;
1444 writeq(val64, &bar0->tx_w_round_robin_4);
1445 break;
1446 case 4:
1447 val64 = 0x0001020300010203ULL;
1448 writeq(val64, &bar0->tx_w_round_robin_0);
1449 writeq(val64, &bar0->tx_w_round_robin_1);
1450 writeq(val64, &bar0->tx_w_round_robin_2);
1451 writeq(val64, &bar0->tx_w_round_robin_3);
1452 val64 = 0x0001020300000000ULL;
1453 writeq(val64, &bar0->tx_w_round_robin_4);
1454 break;
1455 case 5:
1456 val64 = 0x0001020304000102ULL;
1457 writeq(val64, &bar0->tx_w_round_robin_0);
1458 val64 = 0x0304000102030400ULL;
1459 writeq(val64, &bar0->tx_w_round_robin_1);
1460 val64 = 0x0102030400010203ULL;
1461 writeq(val64, &bar0->tx_w_round_robin_2);
1462 val64 = 0x0400010203040001ULL;
1463 writeq(val64, &bar0->tx_w_round_robin_3);
1464 val64 = 0x0203040000000000ULL;
1465 writeq(val64, &bar0->tx_w_round_robin_4);
1466 break;
1467 case 6:
1468 val64 = 0x0001020304050001ULL;
1469 writeq(val64, &bar0->tx_w_round_robin_0);
1470 val64 = 0x0203040500010203ULL;
1471 writeq(val64, &bar0->tx_w_round_robin_1);
1472 val64 = 0x0405000102030405ULL;
1473 writeq(val64, &bar0->tx_w_round_robin_2);
1474 val64 = 0x0001020304050001ULL;
1475 writeq(val64, &bar0->tx_w_round_robin_3);
1476 val64 = 0x0203040500000000ULL;
1477 writeq(val64, &bar0->tx_w_round_robin_4);
1478 break;
1479 case 7:
1480 val64 = 0x0001020304050600ULL;
1481 writeq(val64, &bar0->tx_w_round_robin_0);
1482 val64 = 0x0102030405060001ULL;
1483 writeq(val64, &bar0->tx_w_round_robin_1);
1484 val64 = 0x0203040506000102ULL;
1485 writeq(val64, &bar0->tx_w_round_robin_2);
1486 val64 = 0x0304050600010203ULL;
1487 writeq(val64, &bar0->tx_w_round_robin_3);
1488 val64 = 0x0405060000000000ULL;
1489 writeq(val64, &bar0->tx_w_round_robin_4);
1490 break;
1491 case 8:
1492 val64 = 0x0001020304050607ULL;
1493 writeq(val64, &bar0->tx_w_round_robin_0);
1494 writeq(val64, &bar0->tx_w_round_robin_1);
1495 writeq(val64, &bar0->tx_w_round_robin_2);
1496 writeq(val64, &bar0->tx_w_round_robin_3);
1497 val64 = 0x0001020300000000ULL;
1498 writeq(val64, &bar0->tx_w_round_robin_4);
1499 break;
1500 }
1501
1502 /* Enable all configured Tx FIFO partitions */
1503 val64 = readq(&bar0->tx_fifo_partition_0);
1504 val64 |= (TX_FIFO_PARTITION_EN);
1505 writeq(val64, &bar0->tx_fifo_partition_0);
1506
1507 /* Filling the Rx round robin registers as per the
1508 * number of Rings and steering based on QoS with
1509 * equal priority.
1510 */
1511 switch (config->rx_ring_num) {
1512 case 1:
1513 val64 = 0x0;
1514 writeq(val64, &bar0->rx_w_round_robin_0);
1515 writeq(val64, &bar0->rx_w_round_robin_1);
1516 writeq(val64, &bar0->rx_w_round_robin_2);
1517 writeq(val64, &bar0->rx_w_round_robin_3);
1518 writeq(val64, &bar0->rx_w_round_robin_4);
1519
1520 val64 = 0x8080808080808080ULL;
1521 writeq(val64, &bar0->rts_qos_steering);
1522 break;
1523 case 2:
1524 val64 = 0x0001000100010001ULL;
1525 writeq(val64, &bar0->rx_w_round_robin_0);
1526 writeq(val64, &bar0->rx_w_round_robin_1);
1527 writeq(val64, &bar0->rx_w_round_robin_2);
1528 writeq(val64, &bar0->rx_w_round_robin_3);
1529 val64 = 0x0001000100000000ULL;
1530 writeq(val64, &bar0->rx_w_round_robin_4);
1531
1532 val64 = 0x8080808040404040ULL;
1533 writeq(val64, &bar0->rts_qos_steering);
1534 break;
1535 case 3:
1536 val64 = 0x0001020001020001ULL;
1537 writeq(val64, &bar0->rx_w_round_robin_0);
1538 val64 = 0x0200010200010200ULL;
1539 writeq(val64, &bar0->rx_w_round_robin_1);
1540 val64 = 0x0102000102000102ULL;
1541 writeq(val64, &bar0->rx_w_round_robin_2);
1542 val64 = 0x0001020001020001ULL;
1543 writeq(val64, &bar0->rx_w_round_robin_3);
1544 val64 = 0x0200010200000000ULL;
1545 writeq(val64, &bar0->rx_w_round_robin_4);
1546
1547 val64 = 0x8080804040402020ULL;
1548 writeq(val64, &bar0->rts_qos_steering);
1549 break;
1550 case 4:
1551 val64 = 0x0001020300010203ULL;
1552 writeq(val64, &bar0->rx_w_round_robin_0);
1553 writeq(val64, &bar0->rx_w_round_robin_1);
1554 writeq(val64, &bar0->rx_w_round_robin_2);
1555 writeq(val64, &bar0->rx_w_round_robin_3);
1556 val64 = 0x0001020300000000ULL;
1557 writeq(val64, &bar0->rx_w_round_robin_4);
1558
1559 val64 = 0x8080404020201010ULL;
1560 writeq(val64, &bar0->rts_qos_steering);
1561 break;
1562 case 5:
1563 val64 = 0x0001020304000102ULL;
1564 writeq(val64, &bar0->rx_w_round_robin_0);
1565 val64 = 0x0304000102030400ULL;
1566 writeq(val64, &bar0->rx_w_round_robin_1);
1567 val64 = 0x0102030400010203ULL;
1568 writeq(val64, &bar0->rx_w_round_robin_2);
1569 val64 = 0x0400010203040001ULL;
1570 writeq(val64, &bar0->rx_w_round_robin_3);
1571 val64 = 0x0203040000000000ULL;
1572 writeq(val64, &bar0->rx_w_round_robin_4);
1573
1574 val64 = 0x8080404020201008ULL;
1575 writeq(val64, &bar0->rts_qos_steering);
1576 break;
1577 case 6:
1578 val64 = 0x0001020304050001ULL;
1579 writeq(val64, &bar0->rx_w_round_robin_0);
1580 val64 = 0x0203040500010203ULL;
1581 writeq(val64, &bar0->rx_w_round_robin_1);
1582 val64 = 0x0405000102030405ULL;
1583 writeq(val64, &bar0->rx_w_round_robin_2);
1584 val64 = 0x0001020304050001ULL;
1585 writeq(val64, &bar0->rx_w_round_robin_3);
1586 val64 = 0x0203040500000000ULL;
1587 writeq(val64, &bar0->rx_w_round_robin_4);
1588
1589 val64 = 0x8080404020100804ULL;
1590 writeq(val64, &bar0->rts_qos_steering);
1591 break;
1592 case 7:
1593 val64 = 0x0001020304050600ULL;
1594 writeq(val64, &bar0->rx_w_round_robin_0);
1595 val64 = 0x0102030405060001ULL;
1596 writeq(val64, &bar0->rx_w_round_robin_1);
1597 val64 = 0x0203040506000102ULL;
1598 writeq(val64, &bar0->rx_w_round_robin_2);
1599 val64 = 0x0304050600010203ULL;
1600 writeq(val64, &bar0->rx_w_round_robin_3);
1601 val64 = 0x0405060000000000ULL;
1602 writeq(val64, &bar0->rx_w_round_robin_4);
1603
1604 val64 = 0x8080402010080402ULL;
1605 writeq(val64, &bar0->rts_qos_steering);
1606 break;
1607 case 8:
1608 val64 = 0x0001020304050607ULL;
1609 writeq(val64, &bar0->rx_w_round_robin_0);
1610 writeq(val64, &bar0->rx_w_round_robin_1);
1611 writeq(val64, &bar0->rx_w_round_robin_2);
1612 writeq(val64, &bar0->rx_w_round_robin_3);
1613 val64 = 0x0001020300000000ULL;
1614 writeq(val64, &bar0->rx_w_round_robin_4);
1615
1616 val64 = 0x8040201008040201ULL;
1617 writeq(val64, &bar0->rts_qos_steering);
1618 break;
1619 }
1620
1621 /* UDP Fix */
1622 val64 = 0;
1623 for (i = 0; i < 8; i++)
1624 writeq(val64, &bar0->rts_frm_len_n[i]);
1625
1626 /* Set the default rts frame length for the rings configured */
1627 val64 = MAC_RTS_FRM_LEN_SET(dev->mtu+22);
1628 for (i = 0 ; i < config->rx_ring_num ; i++)
1629 writeq(val64, &bar0->rts_frm_len_n[i]);
1630
1631 /* Set the frame length for the configured rings
1632 * desired by the user
1633 */
1634 for (i = 0; i < config->rx_ring_num; i++) {
1635 /* If rts_frm_len[i] == 0 then it is assumed that user not
1636 * specified frame length steering.
1637 * If the user provides the frame length then program
1638 * the rts_frm_len register for those values or else
1639 * leave it as it is.
1640 */
1641 if (rts_frm_len[i] != 0) {
1642 writeq(MAC_RTS_FRM_LEN_SET(rts_frm_len[i]),
1643 &bar0->rts_frm_len_n[i]);
1644 }
1645 }
1646
1647 /* Disable differentiated services steering logic */
1648 for (i = 0; i < 64; i++) {
1649 if (rts_ds_steer(nic, i, 0) == FAILURE) {
1650 DBG_PRINT(ERR_DBG,
1651 "%s: rts_ds_steer failed on codepoint %d\n",
1652 dev->name, i);
1653 return -ENODEV;
1654 }
1655 }
1656
1657 /* Program statistics memory */
1658 writeq(mac_control->stats_mem_phy, &bar0->stat_addr);
1659
1660 if (nic->device_type == XFRAME_II_DEVICE) {
1661 val64 = STAT_BC(0x320);
1662 writeq(val64, &bar0->stat_byte_cnt);
1663 }
1664
1665 /*
1666 * Initializing the sampling rate for the device to calculate the
1667 * bandwidth utilization.
1668 */
1669 val64 = MAC_TX_LINK_UTIL_VAL(tmac_util_period) |
1670 MAC_RX_LINK_UTIL_VAL(rmac_util_period);
1671 writeq(val64, &bar0->mac_link_util);
1672
1673 /*
1674 * Initializing the Transmit and Receive Traffic Interrupt
1675 * Scheme.
1676 */
1677
1678 /* Initialize TTI */
1679 if (SUCCESS != init_tti(nic, nic->last_link_state))
1680 return -ENODEV;
1681
1682 /* RTI Initialization */
1683 if (nic->device_type == XFRAME_II_DEVICE) {
1684 /*
1685 * Programmed to generate Apprx 500 Intrs per
1686 * second
1687 */
1688 int count = (nic->config.bus_speed * 125)/4;
1689 val64 = RTI_DATA1_MEM_RX_TIMER_VAL(count);
1690 } else
1691 val64 = RTI_DATA1_MEM_RX_TIMER_VAL(0xFFF);
1692 val64 |= RTI_DATA1_MEM_RX_URNG_A(0xA) |
1693 RTI_DATA1_MEM_RX_URNG_B(0x10) |
1694 RTI_DATA1_MEM_RX_URNG_C(0x30) |
1695 RTI_DATA1_MEM_RX_TIMER_AC_EN;
1696
1697 writeq(val64, &bar0->rti_data1_mem);
1698
1699 val64 = RTI_DATA2_MEM_RX_UFC_A(0x1) |
1700 RTI_DATA2_MEM_RX_UFC_B(0x2) ;
1701 if (nic->config.intr_type == MSI_X)
1702 val64 |= (RTI_DATA2_MEM_RX_UFC_C(0x20) |
1703 RTI_DATA2_MEM_RX_UFC_D(0x40));
1704 else
1705 val64 |= (RTI_DATA2_MEM_RX_UFC_C(0x40) |
1706 RTI_DATA2_MEM_RX_UFC_D(0x80));
1707 writeq(val64, &bar0->rti_data2_mem);
1708
1709 for (i = 0; i < config->rx_ring_num; i++) {
1710 val64 = RTI_CMD_MEM_WE |
1711 RTI_CMD_MEM_STROBE_NEW_CMD |
1712 RTI_CMD_MEM_OFFSET(i);
1713 writeq(val64, &bar0->rti_command_mem);
1714
1715 /*
1716 * Once the operation completes, the Strobe bit of the
1717 * command register will be reset. We poll for this
1718 * particular condition. We wait for a maximum of 500ms
1719 * for the operation to complete, if it's not complete
1720 * by then we return error.
1721 */
1722 time = 0;
1723 while (true) {
1724 val64 = readq(&bar0->rti_command_mem);
1725 if (!(val64 & RTI_CMD_MEM_STROBE_NEW_CMD))
1726 break;
1727
1728 if (time > 10) {
1729 DBG_PRINT(ERR_DBG, "%s: RTI init failed\n",
1730 dev->name);
1731 return -ENODEV;
1732 }
1733 time++;
1734 msleep(50);
1735 }
1736 }
1737
1738 /*
1739 * Initializing proper values as Pause threshold into all
1740 * the 8 Queues on Rx side.
1741 */
1742 writeq(0xffbbffbbffbbffbbULL, &bar0->mc_pause_thresh_q0q3);
1743 writeq(0xffbbffbbffbbffbbULL, &bar0->mc_pause_thresh_q4q7);
1744
1745 /* Disable RMAC PAD STRIPPING */
1746 add = &bar0->mac_cfg;
1747 val64 = readq(&bar0->mac_cfg);
1748 val64 &= ~(MAC_CFG_RMAC_STRIP_PAD);
1749 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1750 writel((u32) (val64), add);
1751 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1752 writel((u32) (val64 >> 32), (add + 4));
1753 val64 = readq(&bar0->mac_cfg);
1754
1755 /* Enable FCS stripping by adapter */
1756 add = &bar0->mac_cfg;
1757 val64 = readq(&bar0->mac_cfg);
1758 val64 |= MAC_CFG_RMAC_STRIP_FCS;
1759 if (nic->device_type == XFRAME_II_DEVICE)
1760 writeq(val64, &bar0->mac_cfg);
1761 else {
1762 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1763 writel((u32) (val64), add);
1764 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1765 writel((u32) (val64 >> 32), (add + 4));
1766 }
1767
1768 /*
1769 * Set the time value to be inserted in the pause frame
1770 * generated by xena.
1771 */
1772 val64 = readq(&bar0->rmac_pause_cfg);
1773 val64 &= ~(RMAC_PAUSE_HG_PTIME(0xffff));
1774 val64 |= RMAC_PAUSE_HG_PTIME(nic->mac_control.rmac_pause_time);
1775 writeq(val64, &bar0->rmac_pause_cfg);
1776
1777 /*
1778 * Set the Threshold Limit for Generating the pause frame
1779 * If the amount of data in any Queue exceeds ratio of
1780 * (mac_control.mc_pause_threshold_q0q3 or q4q7)/256
1781 * pause frame is generated
1782 */
1783 val64 = 0;
1784 for (i = 0; i < 4; i++) {
1785 val64 |= (((u64)0xFF00 |
1786 nic->mac_control.mc_pause_threshold_q0q3)
1787 << (i * 2 * 8));
1788 }
1789 writeq(val64, &bar0->mc_pause_thresh_q0q3);
1790
1791 val64 = 0;
1792 for (i = 0; i < 4; i++) {
1793 val64 |= (((u64)0xFF00 |
1794 nic->mac_control.mc_pause_threshold_q4q7)
1795 << (i * 2 * 8));
1796 }
1797 writeq(val64, &bar0->mc_pause_thresh_q4q7);
1798
1799 /*
1800 * TxDMA will stop Read request if the number of read split has
1801 * exceeded the limit pointed by shared_splits
1802 */
1803 val64 = readq(&bar0->pic_control);
1804 val64 |= PIC_CNTL_SHARED_SPLITS(shared_splits);
1805 writeq(val64, &bar0->pic_control);
1806
1807 if (nic->config.bus_speed == 266) {
1808 writeq(TXREQTO_VAL(0x7f) | TXREQTO_EN, &bar0->txreqtimeout);
1809 writeq(0x0, &bar0->read_retry_delay);
1810 writeq(0x0, &bar0->write_retry_delay);
1811 }
1812
1813 /*
1814 * Programming the Herc to split every write transaction
1815 * that does not start on an ADB to reduce disconnects.
1816 */
1817 if (nic->device_type == XFRAME_II_DEVICE) {
1818 val64 = FAULT_BEHAVIOUR | EXT_REQ_EN |
1819 MISC_LINK_STABILITY_PRD(3);
1820 writeq(val64, &bar0->misc_control);
1821 val64 = readq(&bar0->pic_control2);
1822 val64 &= ~(s2BIT(13)|s2BIT(14)|s2BIT(15));
1823 writeq(val64, &bar0->pic_control2);
1824 }
1825 if (strstr(nic->product_name, "CX4")) {
1826 val64 = TMAC_AVG_IPG(0x17);
1827 writeq(val64, &bar0->tmac_avg_ipg);
1828 }
1829
1830 return SUCCESS;
1831 }
1832 #define LINK_UP_DOWN_INTERRUPT 1
1833 #define MAC_RMAC_ERR_TIMER 2
1834
s2io_link_fault_indication(struct s2io_nic * nic)1835 static int s2io_link_fault_indication(struct s2io_nic *nic)
1836 {
1837 if (nic->device_type == XFRAME_II_DEVICE)
1838 return LINK_UP_DOWN_INTERRUPT;
1839 else
1840 return MAC_RMAC_ERR_TIMER;
1841 }
1842
1843 /**
1844 * do_s2io_write_bits - update alarm bits in alarm register
1845 * @value: alarm bits
1846 * @flag: interrupt status
1847 * @addr: address value
1848 * Description: update alarm bits in alarm register
1849 * Return Value:
1850 * NONE.
1851 */
do_s2io_write_bits(u64 value,int flag,void __iomem * addr)1852 static void do_s2io_write_bits(u64 value, int flag, void __iomem *addr)
1853 {
1854 u64 temp64;
1855
1856 temp64 = readq(addr);
1857
1858 if (flag == ENABLE_INTRS)
1859 temp64 &= ~((u64)value);
1860 else
1861 temp64 |= ((u64)value);
1862 writeq(temp64, addr);
1863 }
1864
en_dis_err_alarms(struct s2io_nic * nic,u16 mask,int flag)1865 static void en_dis_err_alarms(struct s2io_nic *nic, u16 mask, int flag)
1866 {
1867 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1868 register u64 gen_int_mask = 0;
1869 u64 interruptible;
1870
1871 writeq(DISABLE_ALL_INTRS, &bar0->general_int_mask);
1872 if (mask & TX_DMA_INTR) {
1873 gen_int_mask |= TXDMA_INT_M;
1874
1875 do_s2io_write_bits(TXDMA_TDA_INT | TXDMA_PFC_INT |
1876 TXDMA_PCC_INT | TXDMA_TTI_INT |
1877 TXDMA_LSO_INT | TXDMA_TPA_INT |
1878 TXDMA_SM_INT, flag, &bar0->txdma_int_mask);
1879
1880 do_s2io_write_bits(PFC_ECC_DB_ERR | PFC_SM_ERR_ALARM |
1881 PFC_MISC_0_ERR | PFC_MISC_1_ERR |
1882 PFC_PCIX_ERR | PFC_ECC_SG_ERR, flag,
1883 &bar0->pfc_err_mask);
1884
1885 do_s2io_write_bits(TDA_Fn_ECC_DB_ERR | TDA_SM0_ERR_ALARM |
1886 TDA_SM1_ERR_ALARM | TDA_Fn_ECC_SG_ERR |
1887 TDA_PCIX_ERR, flag, &bar0->tda_err_mask);
1888
1889 do_s2io_write_bits(PCC_FB_ECC_DB_ERR | PCC_TXB_ECC_DB_ERR |
1890 PCC_SM_ERR_ALARM | PCC_WR_ERR_ALARM |
1891 PCC_N_SERR | PCC_6_COF_OV_ERR |
1892 PCC_7_COF_OV_ERR | PCC_6_LSO_OV_ERR |
1893 PCC_7_LSO_OV_ERR | PCC_FB_ECC_SG_ERR |
1894 PCC_TXB_ECC_SG_ERR,
1895 flag, &bar0->pcc_err_mask);
1896
1897 do_s2io_write_bits(TTI_SM_ERR_ALARM | TTI_ECC_SG_ERR |
1898 TTI_ECC_DB_ERR, flag, &bar0->tti_err_mask);
1899
1900 do_s2io_write_bits(LSO6_ABORT | LSO7_ABORT |
1901 LSO6_SM_ERR_ALARM | LSO7_SM_ERR_ALARM |
1902 LSO6_SEND_OFLOW | LSO7_SEND_OFLOW,
1903 flag, &bar0->lso_err_mask);
1904
1905 do_s2io_write_bits(TPA_SM_ERR_ALARM | TPA_TX_FRM_DROP,
1906 flag, &bar0->tpa_err_mask);
1907
1908 do_s2io_write_bits(SM_SM_ERR_ALARM, flag, &bar0->sm_err_mask);
1909 }
1910
1911 if (mask & TX_MAC_INTR) {
1912 gen_int_mask |= TXMAC_INT_M;
1913 do_s2io_write_bits(MAC_INT_STATUS_TMAC_INT, flag,
1914 &bar0->mac_int_mask);
1915 do_s2io_write_bits(TMAC_TX_BUF_OVRN | TMAC_TX_SM_ERR |
1916 TMAC_ECC_SG_ERR | TMAC_ECC_DB_ERR |
1917 TMAC_DESC_ECC_SG_ERR | TMAC_DESC_ECC_DB_ERR,
1918 flag, &bar0->mac_tmac_err_mask);
1919 }
1920
1921 if (mask & TX_XGXS_INTR) {
1922 gen_int_mask |= TXXGXS_INT_M;
1923 do_s2io_write_bits(XGXS_INT_STATUS_TXGXS, flag,
1924 &bar0->xgxs_int_mask);
1925 do_s2io_write_bits(TXGXS_ESTORE_UFLOW | TXGXS_TX_SM_ERR |
1926 TXGXS_ECC_SG_ERR | TXGXS_ECC_DB_ERR,
1927 flag, &bar0->xgxs_txgxs_err_mask);
1928 }
1929
1930 if (mask & RX_DMA_INTR) {
1931 gen_int_mask |= RXDMA_INT_M;
1932 do_s2io_write_bits(RXDMA_INT_RC_INT_M | RXDMA_INT_RPA_INT_M |
1933 RXDMA_INT_RDA_INT_M | RXDMA_INT_RTI_INT_M,
1934 flag, &bar0->rxdma_int_mask);
1935 do_s2io_write_bits(RC_PRCn_ECC_DB_ERR | RC_FTC_ECC_DB_ERR |
1936 RC_PRCn_SM_ERR_ALARM | RC_FTC_SM_ERR_ALARM |
1937 RC_PRCn_ECC_SG_ERR | RC_FTC_ECC_SG_ERR |
1938 RC_RDA_FAIL_WR_Rn, flag, &bar0->rc_err_mask);
1939 do_s2io_write_bits(PRC_PCI_AB_RD_Rn | PRC_PCI_AB_WR_Rn |
1940 PRC_PCI_AB_F_WR_Rn | PRC_PCI_DP_RD_Rn |
1941 PRC_PCI_DP_WR_Rn | PRC_PCI_DP_F_WR_Rn, flag,
1942 &bar0->prc_pcix_err_mask);
1943 do_s2io_write_bits(RPA_SM_ERR_ALARM | RPA_CREDIT_ERR |
1944 RPA_ECC_SG_ERR | RPA_ECC_DB_ERR, flag,
1945 &bar0->rpa_err_mask);
1946 do_s2io_write_bits(RDA_RXDn_ECC_DB_ERR | RDA_FRM_ECC_DB_N_AERR |
1947 RDA_SM1_ERR_ALARM | RDA_SM0_ERR_ALARM |
1948 RDA_RXD_ECC_DB_SERR | RDA_RXDn_ECC_SG_ERR |
1949 RDA_FRM_ECC_SG_ERR |
1950 RDA_MISC_ERR|RDA_PCIX_ERR,
1951 flag, &bar0->rda_err_mask);
1952 do_s2io_write_bits(RTI_SM_ERR_ALARM |
1953 RTI_ECC_SG_ERR | RTI_ECC_DB_ERR,
1954 flag, &bar0->rti_err_mask);
1955 }
1956
1957 if (mask & RX_MAC_INTR) {
1958 gen_int_mask |= RXMAC_INT_M;
1959 do_s2io_write_bits(MAC_INT_STATUS_RMAC_INT, flag,
1960 &bar0->mac_int_mask);
1961 interruptible = (RMAC_RX_BUFF_OVRN | RMAC_RX_SM_ERR |
1962 RMAC_UNUSED_INT | RMAC_SINGLE_ECC_ERR |
1963 RMAC_DOUBLE_ECC_ERR);
1964 if (s2io_link_fault_indication(nic) == MAC_RMAC_ERR_TIMER)
1965 interruptible |= RMAC_LINK_STATE_CHANGE_INT;
1966 do_s2io_write_bits(interruptible,
1967 flag, &bar0->mac_rmac_err_mask);
1968 }
1969
1970 if (mask & RX_XGXS_INTR) {
1971 gen_int_mask |= RXXGXS_INT_M;
1972 do_s2io_write_bits(XGXS_INT_STATUS_RXGXS, flag,
1973 &bar0->xgxs_int_mask);
1974 do_s2io_write_bits(RXGXS_ESTORE_OFLOW | RXGXS_RX_SM_ERR, flag,
1975 &bar0->xgxs_rxgxs_err_mask);
1976 }
1977
1978 if (mask & MC_INTR) {
1979 gen_int_mask |= MC_INT_M;
1980 do_s2io_write_bits(MC_INT_MASK_MC_INT,
1981 flag, &bar0->mc_int_mask);
1982 do_s2io_write_bits(MC_ERR_REG_SM_ERR | MC_ERR_REG_ECC_ALL_SNG |
1983 MC_ERR_REG_ECC_ALL_DBL | PLL_LOCK_N, flag,
1984 &bar0->mc_err_mask);
1985 }
1986 nic->general_int_mask = gen_int_mask;
1987
1988 /* Remove this line when alarm interrupts are enabled */
1989 nic->general_int_mask = 0;
1990 }
1991
1992 /**
1993 * en_dis_able_nic_intrs - Enable or Disable the interrupts
1994 * @nic: device private variable,
1995 * @mask: A mask indicating which Intr block must be modified and,
1996 * @flag: A flag indicating whether to enable or disable the Intrs.
1997 * Description: This function will either disable or enable the interrupts
1998 * depending on the flag argument. The mask argument can be used to
1999 * enable/disable any Intr block.
2000 * Return Value: NONE.
2001 */
2002
en_dis_able_nic_intrs(struct s2io_nic * nic,u16 mask,int flag)2003 static void en_dis_able_nic_intrs(struct s2io_nic *nic, u16 mask, int flag)
2004 {
2005 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2006 register u64 temp64 = 0, intr_mask = 0;
2007
2008 intr_mask = nic->general_int_mask;
2009
2010 /* Top level interrupt classification */
2011 /* PIC Interrupts */
2012 if (mask & TX_PIC_INTR) {
2013 /* Enable PIC Intrs in the general intr mask register */
2014 intr_mask |= TXPIC_INT_M;
2015 if (flag == ENABLE_INTRS) {
2016 /*
2017 * If Hercules adapter enable GPIO otherwise
2018 * disable all PCIX, Flash, MDIO, IIC and GPIO
2019 * interrupts for now.
2020 * TODO
2021 */
2022 if (s2io_link_fault_indication(nic) ==
2023 LINK_UP_DOWN_INTERRUPT) {
2024 do_s2io_write_bits(PIC_INT_GPIO, flag,
2025 &bar0->pic_int_mask);
2026 do_s2io_write_bits(GPIO_INT_MASK_LINK_UP, flag,
2027 &bar0->gpio_int_mask);
2028 } else
2029 writeq(DISABLE_ALL_INTRS, &bar0->pic_int_mask);
2030 } else if (flag == DISABLE_INTRS) {
2031 /*
2032 * Disable PIC Intrs in the general
2033 * intr mask register
2034 */
2035 writeq(DISABLE_ALL_INTRS, &bar0->pic_int_mask);
2036 }
2037 }
2038
2039 /* Tx traffic interrupts */
2040 if (mask & TX_TRAFFIC_INTR) {
2041 intr_mask |= TXTRAFFIC_INT_M;
2042 if (flag == ENABLE_INTRS) {
2043 /*
2044 * Enable all the Tx side interrupts
2045 * writing 0 Enables all 64 TX interrupt levels
2046 */
2047 writeq(0x0, &bar0->tx_traffic_mask);
2048 } else if (flag == DISABLE_INTRS) {
2049 /*
2050 * Disable Tx Traffic Intrs in the general intr mask
2051 * register.
2052 */
2053 writeq(DISABLE_ALL_INTRS, &bar0->tx_traffic_mask);
2054 }
2055 }
2056
2057 /* Rx traffic interrupts */
2058 if (mask & RX_TRAFFIC_INTR) {
2059 intr_mask |= RXTRAFFIC_INT_M;
2060 if (flag == ENABLE_INTRS) {
2061 /* writing 0 Enables all 8 RX interrupt levels */
2062 writeq(0x0, &bar0->rx_traffic_mask);
2063 } else if (flag == DISABLE_INTRS) {
2064 /*
2065 * Disable Rx Traffic Intrs in the general intr mask
2066 * register.
2067 */
2068 writeq(DISABLE_ALL_INTRS, &bar0->rx_traffic_mask);
2069 }
2070 }
2071
2072 temp64 = readq(&bar0->general_int_mask);
2073 if (flag == ENABLE_INTRS)
2074 temp64 &= ~((u64)intr_mask);
2075 else
2076 temp64 = DISABLE_ALL_INTRS;
2077 writeq(temp64, &bar0->general_int_mask);
2078
2079 nic->general_int_mask = readq(&bar0->general_int_mask);
2080 }
2081
2082 /**
2083 * verify_pcc_quiescent- Checks for PCC quiescent state
2084 * Return: 1 If PCC is quiescence
2085 * 0 If PCC is not quiescence
2086 */
verify_pcc_quiescent(struct s2io_nic * sp,int flag)2087 static int verify_pcc_quiescent(struct s2io_nic *sp, int flag)
2088 {
2089 int ret = 0, herc;
2090 struct XENA_dev_config __iomem *bar0 = sp->bar0;
2091 u64 val64 = readq(&bar0->adapter_status);
2092
2093 herc = (sp->device_type == XFRAME_II_DEVICE);
2094
2095 if (flag == false) {
2096 if ((!herc && (sp->pdev->revision >= 4)) || herc) {
2097 if (!(val64 & ADAPTER_STATUS_RMAC_PCC_IDLE))
2098 ret = 1;
2099 } else {
2100 if (!(val64 & ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE))
2101 ret = 1;
2102 }
2103 } else {
2104 if ((!herc && (sp->pdev->revision >= 4)) || herc) {
2105 if (((val64 & ADAPTER_STATUS_RMAC_PCC_IDLE) ==
2106 ADAPTER_STATUS_RMAC_PCC_IDLE))
2107 ret = 1;
2108 } else {
2109 if (((val64 & ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE) ==
2110 ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE))
2111 ret = 1;
2112 }
2113 }
2114
2115 return ret;
2116 }
2117 /**
2118 * verify_xena_quiescence - Checks whether the H/W is ready
2119 * Description: Returns whether the H/W is ready to go or not. Depending
2120 * on whether adapter enable bit was written or not the comparison
2121 * differs and the calling function passes the input argument flag to
2122 * indicate this.
2123 * Return: 1 If xena is quiescence
2124 * 0 If Xena is not quiescence
2125 */
2126
verify_xena_quiescence(struct s2io_nic * sp)2127 static int verify_xena_quiescence(struct s2io_nic *sp)
2128 {
2129 int mode;
2130 struct XENA_dev_config __iomem *bar0 = sp->bar0;
2131 u64 val64 = readq(&bar0->adapter_status);
2132 mode = s2io_verify_pci_mode(sp);
2133
2134 if (!(val64 & ADAPTER_STATUS_TDMA_READY)) {
2135 DBG_PRINT(ERR_DBG, "TDMA is not ready!\n");
2136 return 0;
2137 }
2138 if (!(val64 & ADAPTER_STATUS_RDMA_READY)) {
2139 DBG_PRINT(ERR_DBG, "RDMA is not ready!\n");
2140 return 0;
2141 }
2142 if (!(val64 & ADAPTER_STATUS_PFC_READY)) {
2143 DBG_PRINT(ERR_DBG, "PFC is not ready!\n");
2144 return 0;
2145 }
2146 if (!(val64 & ADAPTER_STATUS_TMAC_BUF_EMPTY)) {
2147 DBG_PRINT(ERR_DBG, "TMAC BUF is not empty!\n");
2148 return 0;
2149 }
2150 if (!(val64 & ADAPTER_STATUS_PIC_QUIESCENT)) {
2151 DBG_PRINT(ERR_DBG, "PIC is not QUIESCENT!\n");
2152 return 0;
2153 }
2154 if (!(val64 & ADAPTER_STATUS_MC_DRAM_READY)) {
2155 DBG_PRINT(ERR_DBG, "MC_DRAM is not ready!\n");
2156 return 0;
2157 }
2158 if (!(val64 & ADAPTER_STATUS_MC_QUEUES_READY)) {
2159 DBG_PRINT(ERR_DBG, "MC_QUEUES is not ready!\n");
2160 return 0;
2161 }
2162 if (!(val64 & ADAPTER_STATUS_M_PLL_LOCK)) {
2163 DBG_PRINT(ERR_DBG, "M_PLL is not locked!\n");
2164 return 0;
2165 }
2166
2167 /*
2168 * In PCI 33 mode, the P_PLL is not used, and therefore,
2169 * the the P_PLL_LOCK bit in the adapter_status register will
2170 * not be asserted.
2171 */
2172 if (!(val64 & ADAPTER_STATUS_P_PLL_LOCK) &&
2173 sp->device_type == XFRAME_II_DEVICE &&
2174 mode != PCI_MODE_PCI_33) {
2175 DBG_PRINT(ERR_DBG, "P_PLL is not locked!\n");
2176 return 0;
2177 }
2178 if (!((val64 & ADAPTER_STATUS_RC_PRC_QUIESCENT) ==
2179 ADAPTER_STATUS_RC_PRC_QUIESCENT)) {
2180 DBG_PRINT(ERR_DBG, "RC_PRC is not QUIESCENT!\n");
2181 return 0;
2182 }
2183 return 1;
2184 }
2185
2186 /**
2187 * fix_mac_address - Fix for Mac addr problem on Alpha platforms
2188 * @sp: Pointer to device specifc structure
2189 * Description :
2190 * New procedure to clear mac address reading problems on Alpha platforms
2191 *
2192 */
2193
fix_mac_address(struct s2io_nic * sp)2194 static void fix_mac_address(struct s2io_nic *sp)
2195 {
2196 struct XENA_dev_config __iomem *bar0 = sp->bar0;
2197 int i = 0;
2198
2199 while (fix_mac[i] != END_SIGN) {
2200 writeq(fix_mac[i++], &bar0->gpio_control);
2201 udelay(10);
2202 (void) readq(&bar0->gpio_control);
2203 }
2204 }
2205
2206 /**
2207 * start_nic - Turns the device on
2208 * @nic : device private variable.
2209 * Description:
2210 * This function actually turns the device on. Before this function is
2211 * called,all Registers are configured from their reset states
2212 * and shared memory is allocated but the NIC is still quiescent. On
2213 * calling this function, the device interrupts are cleared and the NIC is
2214 * literally switched on by writing into the adapter control register.
2215 * Return Value:
2216 * SUCCESS on success and -1 on failure.
2217 */
2218
start_nic(struct s2io_nic * nic)2219 static int start_nic(struct s2io_nic *nic)
2220 {
2221 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2222 struct net_device *dev = nic->dev;
2223 register u64 val64 = 0;
2224 u16 subid, i;
2225 struct config_param *config = &nic->config;
2226 struct mac_info *mac_control = &nic->mac_control;
2227
2228 /* PRC Initialization and configuration */
2229 for (i = 0; i < config->rx_ring_num; i++) {
2230 struct ring_info *ring = &mac_control->rings[i];
2231
2232 writeq((u64)ring->rx_blocks[0].block_dma_addr,
2233 &bar0->prc_rxd0_n[i]);
2234
2235 val64 = readq(&bar0->prc_ctrl_n[i]);
2236 if (nic->rxd_mode == RXD_MODE_1)
2237 val64 |= PRC_CTRL_RC_ENABLED;
2238 else
2239 val64 |= PRC_CTRL_RC_ENABLED | PRC_CTRL_RING_MODE_3;
2240 if (nic->device_type == XFRAME_II_DEVICE)
2241 val64 |= PRC_CTRL_GROUP_READS;
2242 val64 &= ~PRC_CTRL_RXD_BACKOFF_INTERVAL(0xFFFFFF);
2243 val64 |= PRC_CTRL_RXD_BACKOFF_INTERVAL(0x1000);
2244 writeq(val64, &bar0->prc_ctrl_n[i]);
2245 }
2246
2247 if (nic->rxd_mode == RXD_MODE_3B) {
2248 /* Enabling 2 buffer mode by writing into Rx_pa_cfg reg. */
2249 val64 = readq(&bar0->rx_pa_cfg);
2250 val64 |= RX_PA_CFG_IGNORE_L2_ERR;
2251 writeq(val64, &bar0->rx_pa_cfg);
2252 }
2253
2254 if (vlan_tag_strip == 0) {
2255 val64 = readq(&bar0->rx_pa_cfg);
2256 val64 &= ~RX_PA_CFG_STRIP_VLAN_TAG;
2257 writeq(val64, &bar0->rx_pa_cfg);
2258 nic->vlan_strip_flag = 0;
2259 }
2260
2261 /*
2262 * Enabling MC-RLDRAM. After enabling the device, we timeout
2263 * for around 100ms, which is approximately the time required
2264 * for the device to be ready for operation.
2265 */
2266 val64 = readq(&bar0->mc_rldram_mrs);
2267 val64 |= MC_RLDRAM_QUEUE_SIZE_ENABLE | MC_RLDRAM_MRS_ENABLE;
2268 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF);
2269 val64 = readq(&bar0->mc_rldram_mrs);
2270
2271 msleep(100); /* Delay by around 100 ms. */
2272
2273 /* Enabling ECC Protection. */
2274 val64 = readq(&bar0->adapter_control);
2275 val64 &= ~ADAPTER_ECC_EN;
2276 writeq(val64, &bar0->adapter_control);
2277
2278 /*
2279 * Verify if the device is ready to be enabled, if so enable
2280 * it.
2281 */
2282 val64 = readq(&bar0->adapter_status);
2283 if (!verify_xena_quiescence(nic)) {
2284 DBG_PRINT(ERR_DBG, "%s: device is not ready, "
2285 "Adapter status reads: 0x%llx\n",
2286 dev->name, (unsigned long long)val64);
2287 return FAILURE;
2288 }
2289
2290 /*
2291 * With some switches, link might be already up at this point.
2292 * Because of this weird behavior, when we enable laser,
2293 * we may not get link. We need to handle this. We cannot
2294 * figure out which switch is misbehaving. So we are forced to
2295 * make a global change.
2296 */
2297
2298 /* Enabling Laser. */
2299 val64 = readq(&bar0->adapter_control);
2300 val64 |= ADAPTER_EOI_TX_ON;
2301 writeq(val64, &bar0->adapter_control);
2302
2303 if (s2io_link_fault_indication(nic) == MAC_RMAC_ERR_TIMER) {
2304 /*
2305 * Dont see link state interrupts initially on some switches,
2306 * so directly scheduling the link state task here.
2307 */
2308 schedule_work(&nic->set_link_task);
2309 }
2310 /* SXE-002: Initialize link and activity LED */
2311 subid = nic->pdev->subsystem_device;
2312 if (((subid & 0xFF) >= 0x07) &&
2313 (nic->device_type == XFRAME_I_DEVICE)) {
2314 val64 = readq(&bar0->gpio_control);
2315 val64 |= 0x0000800000000000ULL;
2316 writeq(val64, &bar0->gpio_control);
2317 val64 = 0x0411040400000000ULL;
2318 writeq(val64, (void __iomem *)bar0 + 0x2700);
2319 }
2320
2321 return SUCCESS;
2322 }
2323 /**
2324 * s2io_txdl_getskb - Get the skb from txdl, unmap and return skb
2325 */
s2io_txdl_getskb(struct fifo_info * fifo_data,struct TxD * txdlp,int get_off)2326 static struct sk_buff *s2io_txdl_getskb(struct fifo_info *fifo_data,
2327 struct TxD *txdlp, int get_off)
2328 {
2329 struct s2io_nic *nic = fifo_data->nic;
2330 struct sk_buff *skb;
2331 struct TxD *txds;
2332 u16 j, frg_cnt;
2333
2334 txds = txdlp;
2335 if (txds->Host_Control == (u64)(long)fifo_data->ufo_in_band_v) {
2336 pci_unmap_single(nic->pdev, (dma_addr_t)txds->Buffer_Pointer,
2337 sizeof(u64), PCI_DMA_TODEVICE);
2338 txds++;
2339 }
2340
2341 skb = (struct sk_buff *)((unsigned long)txds->Host_Control);
2342 if (!skb) {
2343 memset(txdlp, 0, (sizeof(struct TxD) * fifo_data->max_txds));
2344 return NULL;
2345 }
2346 pci_unmap_single(nic->pdev, (dma_addr_t)txds->Buffer_Pointer,
2347 skb_headlen(skb), PCI_DMA_TODEVICE);
2348 frg_cnt = skb_shinfo(skb)->nr_frags;
2349 if (frg_cnt) {
2350 txds++;
2351 for (j = 0; j < frg_cnt; j++, txds++) {
2352 const skb_frag_t *frag = &skb_shinfo(skb)->frags[j];
2353 if (!txds->Buffer_Pointer)
2354 break;
2355 pci_unmap_page(nic->pdev,
2356 (dma_addr_t)txds->Buffer_Pointer,
2357 skb_frag_size(frag), PCI_DMA_TODEVICE);
2358 }
2359 }
2360 memset(txdlp, 0, (sizeof(struct TxD) * fifo_data->max_txds));
2361 return skb;
2362 }
2363
2364 /**
2365 * free_tx_buffers - Free all queued Tx buffers
2366 * @nic : device private variable.
2367 * Description:
2368 * Free all queued Tx buffers.
2369 * Return Value: void
2370 */
2371
free_tx_buffers(struct s2io_nic * nic)2372 static void free_tx_buffers(struct s2io_nic *nic)
2373 {
2374 struct net_device *dev = nic->dev;
2375 struct sk_buff *skb;
2376 struct TxD *txdp;
2377 int i, j;
2378 int cnt = 0;
2379 struct config_param *config = &nic->config;
2380 struct mac_info *mac_control = &nic->mac_control;
2381 struct stat_block *stats = mac_control->stats_info;
2382 struct swStat *swstats = &stats->sw_stat;
2383
2384 for (i = 0; i < config->tx_fifo_num; i++) {
2385 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
2386 struct fifo_info *fifo = &mac_control->fifos[i];
2387 unsigned long flags;
2388
2389 spin_lock_irqsave(&fifo->tx_lock, flags);
2390 for (j = 0; j < tx_cfg->fifo_len; j++) {
2391 txdp = fifo->list_info[j].list_virt_addr;
2392 skb = s2io_txdl_getskb(&mac_control->fifos[i], txdp, j);
2393 if (skb) {
2394 swstats->mem_freed += skb->truesize;
2395 dev_kfree_skb(skb);
2396 cnt++;
2397 }
2398 }
2399 DBG_PRINT(INTR_DBG,
2400 "%s: forcibly freeing %d skbs on FIFO%d\n",
2401 dev->name, cnt, i);
2402 fifo->tx_curr_get_info.offset = 0;
2403 fifo->tx_curr_put_info.offset = 0;
2404 spin_unlock_irqrestore(&fifo->tx_lock, flags);
2405 }
2406 }
2407
2408 /**
2409 * stop_nic - To stop the nic
2410 * @nic ; device private variable.
2411 * Description:
2412 * This function does exactly the opposite of what the start_nic()
2413 * function does. This function is called to stop the device.
2414 * Return Value:
2415 * void.
2416 */
2417
stop_nic(struct s2io_nic * nic)2418 static void stop_nic(struct s2io_nic *nic)
2419 {
2420 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2421 register u64 val64 = 0;
2422 u16 interruptible;
2423
2424 /* Disable all interrupts */
2425 en_dis_err_alarms(nic, ENA_ALL_INTRS, DISABLE_INTRS);
2426 interruptible = TX_TRAFFIC_INTR | RX_TRAFFIC_INTR;
2427 interruptible |= TX_PIC_INTR;
2428 en_dis_able_nic_intrs(nic, interruptible, DISABLE_INTRS);
2429
2430 /* Clearing Adapter_En bit of ADAPTER_CONTROL Register */
2431 val64 = readq(&bar0->adapter_control);
2432 val64 &= ~(ADAPTER_CNTL_EN);
2433 writeq(val64, &bar0->adapter_control);
2434 }
2435
2436 /**
2437 * fill_rx_buffers - Allocates the Rx side skbs
2438 * @ring_info: per ring structure
2439 * @from_card_up: If this is true, we will map the buffer to get
2440 * the dma address for buf0 and buf1 to give it to the card.
2441 * Else we will sync the already mapped buffer to give it to the card.
2442 * Description:
2443 * The function allocates Rx side skbs and puts the physical
2444 * address of these buffers into the RxD buffer pointers, so that the NIC
2445 * can DMA the received frame into these locations.
2446 * The NIC supports 3 receive modes, viz
2447 * 1. single buffer,
2448 * 2. three buffer and
2449 * 3. Five buffer modes.
2450 * Each mode defines how many fragments the received frame will be split
2451 * up into by the NIC. The frame is split into L3 header, L4 Header,
2452 * L4 payload in three buffer mode and in 5 buffer mode, L4 payload itself
2453 * is split into 3 fragments. As of now only single buffer mode is
2454 * supported.
2455 * Return Value:
2456 * SUCCESS on success or an appropriate -ve value on failure.
2457 */
fill_rx_buffers(struct s2io_nic * nic,struct ring_info * ring,int from_card_up)2458 static int fill_rx_buffers(struct s2io_nic *nic, struct ring_info *ring,
2459 int from_card_up)
2460 {
2461 struct sk_buff *skb;
2462 struct RxD_t *rxdp;
2463 int off, size, block_no, block_no1;
2464 u32 alloc_tab = 0;
2465 u32 alloc_cnt;
2466 u64 tmp;
2467 struct buffAdd *ba;
2468 struct RxD_t *first_rxdp = NULL;
2469 u64 Buffer0_ptr = 0, Buffer1_ptr = 0;
2470 int rxd_index = 0;
2471 struct RxD1 *rxdp1;
2472 struct RxD3 *rxdp3;
2473 struct swStat *swstats = &ring->nic->mac_control.stats_info->sw_stat;
2474
2475 alloc_cnt = ring->pkt_cnt - ring->rx_bufs_left;
2476
2477 block_no1 = ring->rx_curr_get_info.block_index;
2478 while (alloc_tab < alloc_cnt) {
2479 block_no = ring->rx_curr_put_info.block_index;
2480
2481 off = ring->rx_curr_put_info.offset;
2482
2483 rxdp = ring->rx_blocks[block_no].rxds[off].virt_addr;
2484
2485 rxd_index = off + 1;
2486 if (block_no)
2487 rxd_index += (block_no * ring->rxd_count);
2488
2489 if ((block_no == block_no1) &&
2490 (off == ring->rx_curr_get_info.offset) &&
2491 (rxdp->Host_Control)) {
2492 DBG_PRINT(INTR_DBG, "%s: Get and Put info equated\n",
2493 ring->dev->name);
2494 goto end;
2495 }
2496 if (off && (off == ring->rxd_count)) {
2497 ring->rx_curr_put_info.block_index++;
2498 if (ring->rx_curr_put_info.block_index ==
2499 ring->block_count)
2500 ring->rx_curr_put_info.block_index = 0;
2501 block_no = ring->rx_curr_put_info.block_index;
2502 off = 0;
2503 ring->rx_curr_put_info.offset = off;
2504 rxdp = ring->rx_blocks[block_no].block_virt_addr;
2505 DBG_PRINT(INTR_DBG, "%s: Next block at: %p\n",
2506 ring->dev->name, rxdp);
2507
2508 }
2509
2510 if ((rxdp->Control_1 & RXD_OWN_XENA) &&
2511 ((ring->rxd_mode == RXD_MODE_3B) &&
2512 (rxdp->Control_2 & s2BIT(0)))) {
2513 ring->rx_curr_put_info.offset = off;
2514 goto end;
2515 }
2516 /* calculate size of skb based on ring mode */
2517 size = ring->mtu +
2518 HEADER_ETHERNET_II_802_3_SIZE +
2519 HEADER_802_2_SIZE + HEADER_SNAP_SIZE;
2520 if (ring->rxd_mode == RXD_MODE_1)
2521 size += NET_IP_ALIGN;
2522 else
2523 size = ring->mtu + ALIGN_SIZE + BUF0_LEN + 4;
2524
2525 /* allocate skb */
2526 skb = netdev_alloc_skb(nic->dev, size);
2527 if (!skb) {
2528 DBG_PRINT(INFO_DBG, "%s: Could not allocate skb\n",
2529 ring->dev->name);
2530 if (first_rxdp) {
2531 wmb();
2532 first_rxdp->Control_1 |= RXD_OWN_XENA;
2533 }
2534 swstats->mem_alloc_fail_cnt++;
2535
2536 return -ENOMEM ;
2537 }
2538 swstats->mem_allocated += skb->truesize;
2539
2540 if (ring->rxd_mode == RXD_MODE_1) {
2541 /* 1 buffer mode - normal operation mode */
2542 rxdp1 = (struct RxD1 *)rxdp;
2543 memset(rxdp, 0, sizeof(struct RxD1));
2544 skb_reserve(skb, NET_IP_ALIGN);
2545 rxdp1->Buffer0_ptr =
2546 pci_map_single(ring->pdev, skb->data,
2547 size - NET_IP_ALIGN,
2548 PCI_DMA_FROMDEVICE);
2549 if (pci_dma_mapping_error(nic->pdev,
2550 rxdp1->Buffer0_ptr))
2551 goto pci_map_failed;
2552
2553 rxdp->Control_2 =
2554 SET_BUFFER0_SIZE_1(size - NET_IP_ALIGN);
2555 rxdp->Host_Control = (unsigned long)skb;
2556 } else if (ring->rxd_mode == RXD_MODE_3B) {
2557 /*
2558 * 2 buffer mode -
2559 * 2 buffer mode provides 128
2560 * byte aligned receive buffers.
2561 */
2562
2563 rxdp3 = (struct RxD3 *)rxdp;
2564 /* save buffer pointers to avoid frequent dma mapping */
2565 Buffer0_ptr = rxdp3->Buffer0_ptr;
2566 Buffer1_ptr = rxdp3->Buffer1_ptr;
2567 memset(rxdp, 0, sizeof(struct RxD3));
2568 /* restore the buffer pointers for dma sync*/
2569 rxdp3->Buffer0_ptr = Buffer0_ptr;
2570 rxdp3->Buffer1_ptr = Buffer1_ptr;
2571
2572 ba = &ring->ba[block_no][off];
2573 skb_reserve(skb, BUF0_LEN);
2574 tmp = (u64)(unsigned long)skb->data;
2575 tmp += ALIGN_SIZE;
2576 tmp &= ~ALIGN_SIZE;
2577 skb->data = (void *) (unsigned long)tmp;
2578 skb_reset_tail_pointer(skb);
2579
2580 if (from_card_up) {
2581 rxdp3->Buffer0_ptr =
2582 pci_map_single(ring->pdev, ba->ba_0,
2583 BUF0_LEN,
2584 PCI_DMA_FROMDEVICE);
2585 if (pci_dma_mapping_error(nic->pdev,
2586 rxdp3->Buffer0_ptr))
2587 goto pci_map_failed;
2588 } else
2589 pci_dma_sync_single_for_device(ring->pdev,
2590 (dma_addr_t)rxdp3->Buffer0_ptr,
2591 BUF0_LEN,
2592 PCI_DMA_FROMDEVICE);
2593
2594 rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
2595 if (ring->rxd_mode == RXD_MODE_3B) {
2596 /* Two buffer mode */
2597
2598 /*
2599 * Buffer2 will have L3/L4 header plus
2600 * L4 payload
2601 */
2602 rxdp3->Buffer2_ptr = pci_map_single(ring->pdev,
2603 skb->data,
2604 ring->mtu + 4,
2605 PCI_DMA_FROMDEVICE);
2606
2607 if (pci_dma_mapping_error(nic->pdev,
2608 rxdp3->Buffer2_ptr))
2609 goto pci_map_failed;
2610
2611 if (from_card_up) {
2612 rxdp3->Buffer1_ptr =
2613 pci_map_single(ring->pdev,
2614 ba->ba_1,
2615 BUF1_LEN,
2616 PCI_DMA_FROMDEVICE);
2617
2618 if (pci_dma_mapping_error(nic->pdev,
2619 rxdp3->Buffer1_ptr)) {
2620 pci_unmap_single(ring->pdev,
2621 (dma_addr_t)(unsigned long)
2622 skb->data,
2623 ring->mtu + 4,
2624 PCI_DMA_FROMDEVICE);
2625 goto pci_map_failed;
2626 }
2627 }
2628 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
2629 rxdp->Control_2 |= SET_BUFFER2_SIZE_3
2630 (ring->mtu + 4);
2631 }
2632 rxdp->Control_2 |= s2BIT(0);
2633 rxdp->Host_Control = (unsigned long) (skb);
2634 }
2635 if (alloc_tab & ((1 << rxsync_frequency) - 1))
2636 rxdp->Control_1 |= RXD_OWN_XENA;
2637 off++;
2638 if (off == (ring->rxd_count + 1))
2639 off = 0;
2640 ring->rx_curr_put_info.offset = off;
2641
2642 rxdp->Control_2 |= SET_RXD_MARKER;
2643 if (!(alloc_tab & ((1 << rxsync_frequency) - 1))) {
2644 if (first_rxdp) {
2645 wmb();
2646 first_rxdp->Control_1 |= RXD_OWN_XENA;
2647 }
2648 first_rxdp = rxdp;
2649 }
2650 ring->rx_bufs_left += 1;
2651 alloc_tab++;
2652 }
2653
2654 end:
2655 /* Transfer ownership of first descriptor to adapter just before
2656 * exiting. Before that, use memory barrier so that ownership
2657 * and other fields are seen by adapter correctly.
2658 */
2659 if (first_rxdp) {
2660 wmb();
2661 first_rxdp->Control_1 |= RXD_OWN_XENA;
2662 }
2663
2664 return SUCCESS;
2665
2666 pci_map_failed:
2667 swstats->pci_map_fail_cnt++;
2668 swstats->mem_freed += skb->truesize;
2669 dev_kfree_skb_irq(skb);
2670 return -ENOMEM;
2671 }
2672
free_rxd_blk(struct s2io_nic * sp,int ring_no,int blk)2673 static void free_rxd_blk(struct s2io_nic *sp, int ring_no, int blk)
2674 {
2675 struct net_device *dev = sp->dev;
2676 int j;
2677 struct sk_buff *skb;
2678 struct RxD_t *rxdp;
2679 struct RxD1 *rxdp1;
2680 struct RxD3 *rxdp3;
2681 struct mac_info *mac_control = &sp->mac_control;
2682 struct stat_block *stats = mac_control->stats_info;
2683 struct swStat *swstats = &stats->sw_stat;
2684
2685 for (j = 0 ; j < rxd_count[sp->rxd_mode]; j++) {
2686 rxdp = mac_control->rings[ring_no].
2687 rx_blocks[blk].rxds[j].virt_addr;
2688 skb = (struct sk_buff *)((unsigned long)rxdp->Host_Control);
2689 if (!skb)
2690 continue;
2691 if (sp->rxd_mode == RXD_MODE_1) {
2692 rxdp1 = (struct RxD1 *)rxdp;
2693 pci_unmap_single(sp->pdev,
2694 (dma_addr_t)rxdp1->Buffer0_ptr,
2695 dev->mtu +
2696 HEADER_ETHERNET_II_802_3_SIZE +
2697 HEADER_802_2_SIZE + HEADER_SNAP_SIZE,
2698 PCI_DMA_FROMDEVICE);
2699 memset(rxdp, 0, sizeof(struct RxD1));
2700 } else if (sp->rxd_mode == RXD_MODE_3B) {
2701 rxdp3 = (struct RxD3 *)rxdp;
2702 pci_unmap_single(sp->pdev,
2703 (dma_addr_t)rxdp3->Buffer0_ptr,
2704 BUF0_LEN,
2705 PCI_DMA_FROMDEVICE);
2706 pci_unmap_single(sp->pdev,
2707 (dma_addr_t)rxdp3->Buffer1_ptr,
2708 BUF1_LEN,
2709 PCI_DMA_FROMDEVICE);
2710 pci_unmap_single(sp->pdev,
2711 (dma_addr_t)rxdp3->Buffer2_ptr,
2712 dev->mtu + 4,
2713 PCI_DMA_FROMDEVICE);
2714 memset(rxdp, 0, sizeof(struct RxD3));
2715 }
2716 swstats->mem_freed += skb->truesize;
2717 dev_kfree_skb(skb);
2718 mac_control->rings[ring_no].rx_bufs_left -= 1;
2719 }
2720 }
2721
2722 /**
2723 * free_rx_buffers - Frees all Rx buffers
2724 * @sp: device private variable.
2725 * Description:
2726 * This function will free all Rx buffers allocated by host.
2727 * Return Value:
2728 * NONE.
2729 */
2730
free_rx_buffers(struct s2io_nic * sp)2731 static void free_rx_buffers(struct s2io_nic *sp)
2732 {
2733 struct net_device *dev = sp->dev;
2734 int i, blk = 0, buf_cnt = 0;
2735 struct config_param *config = &sp->config;
2736 struct mac_info *mac_control = &sp->mac_control;
2737
2738 for (i = 0; i < config->rx_ring_num; i++) {
2739 struct ring_info *ring = &mac_control->rings[i];
2740
2741 for (blk = 0; blk < rx_ring_sz[i]; blk++)
2742 free_rxd_blk(sp, i, blk);
2743
2744 ring->rx_curr_put_info.block_index = 0;
2745 ring->rx_curr_get_info.block_index = 0;
2746 ring->rx_curr_put_info.offset = 0;
2747 ring->rx_curr_get_info.offset = 0;
2748 ring->rx_bufs_left = 0;
2749 DBG_PRINT(INIT_DBG, "%s: Freed 0x%x Rx Buffers on ring%d\n",
2750 dev->name, buf_cnt, i);
2751 }
2752 }
2753
s2io_chk_rx_buffers(struct s2io_nic * nic,struct ring_info * ring)2754 static int s2io_chk_rx_buffers(struct s2io_nic *nic, struct ring_info *ring)
2755 {
2756 if (fill_rx_buffers(nic, ring, 0) == -ENOMEM) {
2757 DBG_PRINT(INFO_DBG, "%s: Out of memory in Rx Intr!!\n",
2758 ring->dev->name);
2759 }
2760 return 0;
2761 }
2762
2763 /**
2764 * s2io_poll - Rx interrupt handler for NAPI support
2765 * @napi : pointer to the napi structure.
2766 * @budget : The number of packets that were budgeted to be processed
2767 * during one pass through the 'Poll" function.
2768 * Description:
2769 * Comes into picture only if NAPI support has been incorporated. It does
2770 * the same thing that rx_intr_handler does, but not in a interrupt context
2771 * also It will process only a given number of packets.
2772 * Return value:
2773 * 0 on success and 1 if there are No Rx packets to be processed.
2774 */
2775
s2io_poll_msix(struct napi_struct * napi,int budget)2776 static int s2io_poll_msix(struct napi_struct *napi, int budget)
2777 {
2778 struct ring_info *ring = container_of(napi, struct ring_info, napi);
2779 struct net_device *dev = ring->dev;
2780 int pkts_processed = 0;
2781 u8 __iomem *addr = NULL;
2782 u8 val8 = 0;
2783 struct s2io_nic *nic = netdev_priv(dev);
2784 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2785 int budget_org = budget;
2786
2787 if (unlikely(!is_s2io_card_up(nic)))
2788 return 0;
2789
2790 pkts_processed = rx_intr_handler(ring, budget);
2791 s2io_chk_rx_buffers(nic, ring);
2792
2793 if (pkts_processed < budget_org) {
2794 napi_complete(napi);
2795 /*Re Enable MSI-Rx Vector*/
2796 addr = (u8 __iomem *)&bar0->xmsi_mask_reg;
2797 addr += 7 - ring->ring_no;
2798 val8 = (ring->ring_no == 0) ? 0x3f : 0xbf;
2799 writeb(val8, addr);
2800 val8 = readb(addr);
2801 }
2802 return pkts_processed;
2803 }
2804
s2io_poll_inta(struct napi_struct * napi,int budget)2805 static int s2io_poll_inta(struct napi_struct *napi, int budget)
2806 {
2807 struct s2io_nic *nic = container_of(napi, struct s2io_nic, napi);
2808 int pkts_processed = 0;
2809 int ring_pkts_processed, i;
2810 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2811 int budget_org = budget;
2812 struct config_param *config = &nic->config;
2813 struct mac_info *mac_control = &nic->mac_control;
2814
2815 if (unlikely(!is_s2io_card_up(nic)))
2816 return 0;
2817
2818 for (i = 0; i < config->rx_ring_num; i++) {
2819 struct ring_info *ring = &mac_control->rings[i];
2820 ring_pkts_processed = rx_intr_handler(ring, budget);
2821 s2io_chk_rx_buffers(nic, ring);
2822 pkts_processed += ring_pkts_processed;
2823 budget -= ring_pkts_processed;
2824 if (budget <= 0)
2825 break;
2826 }
2827 if (pkts_processed < budget_org) {
2828 napi_complete(napi);
2829 /* Re enable the Rx interrupts for the ring */
2830 writeq(0, &bar0->rx_traffic_mask);
2831 readl(&bar0->rx_traffic_mask);
2832 }
2833 return pkts_processed;
2834 }
2835
2836 #ifdef CONFIG_NET_POLL_CONTROLLER
2837 /**
2838 * s2io_netpoll - netpoll event handler entry point
2839 * @dev : pointer to the device structure.
2840 * Description:
2841 * This function will be called by upper layer to check for events on the
2842 * interface in situations where interrupts are disabled. It is used for
2843 * specific in-kernel networking tasks, such as remote consoles and kernel
2844 * debugging over the network (example netdump in RedHat).
2845 */
s2io_netpoll(struct net_device * dev)2846 static void s2io_netpoll(struct net_device *dev)
2847 {
2848 struct s2io_nic *nic = netdev_priv(dev);
2849 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2850 u64 val64 = 0xFFFFFFFFFFFFFFFFULL;
2851 int i;
2852 struct config_param *config = &nic->config;
2853 struct mac_info *mac_control = &nic->mac_control;
2854
2855 if (pci_channel_offline(nic->pdev))
2856 return;
2857
2858 disable_irq(dev->irq);
2859
2860 writeq(val64, &bar0->rx_traffic_int);
2861 writeq(val64, &bar0->tx_traffic_int);
2862
2863 /* we need to free up the transmitted skbufs or else netpoll will
2864 * run out of skbs and will fail and eventually netpoll application such
2865 * as netdump will fail.
2866 */
2867 for (i = 0; i < config->tx_fifo_num; i++)
2868 tx_intr_handler(&mac_control->fifos[i]);
2869
2870 /* check for received packet and indicate up to network */
2871 for (i = 0; i < config->rx_ring_num; i++) {
2872 struct ring_info *ring = &mac_control->rings[i];
2873
2874 rx_intr_handler(ring, 0);
2875 }
2876
2877 for (i = 0; i < config->rx_ring_num; i++) {
2878 struct ring_info *ring = &mac_control->rings[i];
2879
2880 if (fill_rx_buffers(nic, ring, 0) == -ENOMEM) {
2881 DBG_PRINT(INFO_DBG,
2882 "%s: Out of memory in Rx Netpoll!!\n",
2883 dev->name);
2884 break;
2885 }
2886 }
2887 enable_irq(dev->irq);
2888 }
2889 #endif
2890
2891 /**
2892 * rx_intr_handler - Rx interrupt handler
2893 * @ring_info: per ring structure.
2894 * @budget: budget for napi processing.
2895 * Description:
2896 * If the interrupt is because of a received frame or if the
2897 * receive ring contains fresh as yet un-processed frames,this function is
2898 * called. It picks out the RxD at which place the last Rx processing had
2899 * stopped and sends the skb to the OSM's Rx handler and then increments
2900 * the offset.
2901 * Return Value:
2902 * No. of napi packets processed.
2903 */
rx_intr_handler(struct ring_info * ring_data,int budget)2904 static int rx_intr_handler(struct ring_info *ring_data, int budget)
2905 {
2906 int get_block, put_block;
2907 struct rx_curr_get_info get_info, put_info;
2908 struct RxD_t *rxdp;
2909 struct sk_buff *skb;
2910 int pkt_cnt = 0, napi_pkts = 0;
2911 int i;
2912 struct RxD1 *rxdp1;
2913 struct RxD3 *rxdp3;
2914
2915 get_info = ring_data->rx_curr_get_info;
2916 get_block = get_info.block_index;
2917 memcpy(&put_info, &ring_data->rx_curr_put_info, sizeof(put_info));
2918 put_block = put_info.block_index;
2919 rxdp = ring_data->rx_blocks[get_block].rxds[get_info.offset].virt_addr;
2920
2921 while (RXD_IS_UP2DT(rxdp)) {
2922 /*
2923 * If your are next to put index then it's
2924 * FIFO full condition
2925 */
2926 if ((get_block == put_block) &&
2927 (get_info.offset + 1) == put_info.offset) {
2928 DBG_PRINT(INTR_DBG, "%s: Ring Full\n",
2929 ring_data->dev->name);
2930 break;
2931 }
2932 skb = (struct sk_buff *)((unsigned long)rxdp->Host_Control);
2933 if (skb == NULL) {
2934 DBG_PRINT(ERR_DBG, "%s: NULL skb in Rx Intr\n",
2935 ring_data->dev->name);
2936 return 0;
2937 }
2938 if (ring_data->rxd_mode == RXD_MODE_1) {
2939 rxdp1 = (struct RxD1 *)rxdp;
2940 pci_unmap_single(ring_data->pdev, (dma_addr_t)
2941 rxdp1->Buffer0_ptr,
2942 ring_data->mtu +
2943 HEADER_ETHERNET_II_802_3_SIZE +
2944 HEADER_802_2_SIZE +
2945 HEADER_SNAP_SIZE,
2946 PCI_DMA_FROMDEVICE);
2947 } else if (ring_data->rxd_mode == RXD_MODE_3B) {
2948 rxdp3 = (struct RxD3 *)rxdp;
2949 pci_dma_sync_single_for_cpu(ring_data->pdev,
2950 (dma_addr_t)rxdp3->Buffer0_ptr,
2951 BUF0_LEN,
2952 PCI_DMA_FROMDEVICE);
2953 pci_unmap_single(ring_data->pdev,
2954 (dma_addr_t)rxdp3->Buffer2_ptr,
2955 ring_data->mtu + 4,
2956 PCI_DMA_FROMDEVICE);
2957 }
2958 prefetch(skb->data);
2959 rx_osm_handler(ring_data, rxdp);
2960 get_info.offset++;
2961 ring_data->rx_curr_get_info.offset = get_info.offset;
2962 rxdp = ring_data->rx_blocks[get_block].
2963 rxds[get_info.offset].virt_addr;
2964 if (get_info.offset == rxd_count[ring_data->rxd_mode]) {
2965 get_info.offset = 0;
2966 ring_data->rx_curr_get_info.offset = get_info.offset;
2967 get_block++;
2968 if (get_block == ring_data->block_count)
2969 get_block = 0;
2970 ring_data->rx_curr_get_info.block_index = get_block;
2971 rxdp = ring_data->rx_blocks[get_block].block_virt_addr;
2972 }
2973
2974 if (ring_data->nic->config.napi) {
2975 budget--;
2976 napi_pkts++;
2977 if (!budget)
2978 break;
2979 }
2980 pkt_cnt++;
2981 if ((indicate_max_pkts) && (pkt_cnt > indicate_max_pkts))
2982 break;
2983 }
2984 if (ring_data->lro) {
2985 /* Clear all LRO sessions before exiting */
2986 for (i = 0; i < MAX_LRO_SESSIONS; i++) {
2987 struct lro *lro = &ring_data->lro0_n[i];
2988 if (lro->in_use) {
2989 update_L3L4_header(ring_data->nic, lro);
2990 queue_rx_frame(lro->parent, lro->vlan_tag);
2991 clear_lro_session(lro);
2992 }
2993 }
2994 }
2995 return napi_pkts;
2996 }
2997
2998 /**
2999 * tx_intr_handler - Transmit interrupt handler
3000 * @nic : device private variable
3001 * Description:
3002 * If an interrupt was raised to indicate DMA complete of the
3003 * Tx packet, this function is called. It identifies the last TxD
3004 * whose buffer was freed and frees all skbs whose data have already
3005 * DMA'ed into the NICs internal memory.
3006 * Return Value:
3007 * NONE
3008 */
3009
tx_intr_handler(struct fifo_info * fifo_data)3010 static void tx_intr_handler(struct fifo_info *fifo_data)
3011 {
3012 struct s2io_nic *nic = fifo_data->nic;
3013 struct tx_curr_get_info get_info, put_info;
3014 struct sk_buff *skb = NULL;
3015 struct TxD *txdlp;
3016 int pkt_cnt = 0;
3017 unsigned long flags = 0;
3018 u8 err_mask;
3019 struct stat_block *stats = nic->mac_control.stats_info;
3020 struct swStat *swstats = &stats->sw_stat;
3021
3022 if (!spin_trylock_irqsave(&fifo_data->tx_lock, flags))
3023 return;
3024
3025 get_info = fifo_data->tx_curr_get_info;
3026 memcpy(&put_info, &fifo_data->tx_curr_put_info, sizeof(put_info));
3027 txdlp = fifo_data->list_info[get_info.offset].list_virt_addr;
3028 while ((!(txdlp->Control_1 & TXD_LIST_OWN_XENA)) &&
3029 (get_info.offset != put_info.offset) &&
3030 (txdlp->Host_Control)) {
3031 /* Check for TxD errors */
3032 if (txdlp->Control_1 & TXD_T_CODE) {
3033 unsigned long long err;
3034 err = txdlp->Control_1 & TXD_T_CODE;
3035 if (err & 0x1) {
3036 swstats->parity_err_cnt++;
3037 }
3038
3039 /* update t_code statistics */
3040 err_mask = err >> 48;
3041 switch (err_mask) {
3042 case 2:
3043 swstats->tx_buf_abort_cnt++;
3044 break;
3045
3046 case 3:
3047 swstats->tx_desc_abort_cnt++;
3048 break;
3049
3050 case 7:
3051 swstats->tx_parity_err_cnt++;
3052 break;
3053
3054 case 10:
3055 swstats->tx_link_loss_cnt++;
3056 break;
3057
3058 case 15:
3059 swstats->tx_list_proc_err_cnt++;
3060 break;
3061 }
3062 }
3063
3064 skb = s2io_txdl_getskb(fifo_data, txdlp, get_info.offset);
3065 if (skb == NULL) {
3066 spin_unlock_irqrestore(&fifo_data->tx_lock, flags);
3067 DBG_PRINT(ERR_DBG, "%s: NULL skb in Tx Free Intr\n",
3068 __func__);
3069 return;
3070 }
3071 pkt_cnt++;
3072
3073 /* Updating the statistics block */
3074 swstats->mem_freed += skb->truesize;
3075 dev_kfree_skb_irq(skb);
3076
3077 get_info.offset++;
3078 if (get_info.offset == get_info.fifo_len + 1)
3079 get_info.offset = 0;
3080 txdlp = fifo_data->list_info[get_info.offset].list_virt_addr;
3081 fifo_data->tx_curr_get_info.offset = get_info.offset;
3082 }
3083
3084 s2io_wake_tx_queue(fifo_data, pkt_cnt, nic->config.multiq);
3085
3086 spin_unlock_irqrestore(&fifo_data->tx_lock, flags);
3087 }
3088
3089 /**
3090 * s2io_mdio_write - Function to write in to MDIO registers
3091 * @mmd_type : MMD type value (PMA/PMD/WIS/PCS/PHYXS)
3092 * @addr : address value
3093 * @value : data value
3094 * @dev : pointer to net_device structure
3095 * Description:
3096 * This function is used to write values to the MDIO registers
3097 * NONE
3098 */
s2io_mdio_write(u32 mmd_type,u64 addr,u16 value,struct net_device * dev)3099 static void s2io_mdio_write(u32 mmd_type, u64 addr, u16 value,
3100 struct net_device *dev)
3101 {
3102 u64 val64;
3103 struct s2io_nic *sp = netdev_priv(dev);
3104 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3105
3106 /* address transaction */
3107 val64 = MDIO_MMD_INDX_ADDR(addr) |
3108 MDIO_MMD_DEV_ADDR(mmd_type) |
3109 MDIO_MMS_PRT_ADDR(0x0);
3110 writeq(val64, &bar0->mdio_control);
3111 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3112 writeq(val64, &bar0->mdio_control);
3113 udelay(100);
3114
3115 /* Data transaction */
3116 val64 = MDIO_MMD_INDX_ADDR(addr) |
3117 MDIO_MMD_DEV_ADDR(mmd_type) |
3118 MDIO_MMS_PRT_ADDR(0x0) |
3119 MDIO_MDIO_DATA(value) |
3120 MDIO_OP(MDIO_OP_WRITE_TRANS);
3121 writeq(val64, &bar0->mdio_control);
3122 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3123 writeq(val64, &bar0->mdio_control);
3124 udelay(100);
3125
3126 val64 = MDIO_MMD_INDX_ADDR(addr) |
3127 MDIO_MMD_DEV_ADDR(mmd_type) |
3128 MDIO_MMS_PRT_ADDR(0x0) |
3129 MDIO_OP(MDIO_OP_READ_TRANS);
3130 writeq(val64, &bar0->mdio_control);
3131 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3132 writeq(val64, &bar0->mdio_control);
3133 udelay(100);
3134 }
3135
3136 /**
3137 * s2io_mdio_read - Function to write in to MDIO registers
3138 * @mmd_type : MMD type value (PMA/PMD/WIS/PCS/PHYXS)
3139 * @addr : address value
3140 * @dev : pointer to net_device structure
3141 * Description:
3142 * This function is used to read values to the MDIO registers
3143 * NONE
3144 */
s2io_mdio_read(u32 mmd_type,u64 addr,struct net_device * dev)3145 static u64 s2io_mdio_read(u32 mmd_type, u64 addr, struct net_device *dev)
3146 {
3147 u64 val64 = 0x0;
3148 u64 rval64 = 0x0;
3149 struct s2io_nic *sp = netdev_priv(dev);
3150 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3151
3152 /* address transaction */
3153 val64 = val64 | (MDIO_MMD_INDX_ADDR(addr)
3154 | MDIO_MMD_DEV_ADDR(mmd_type)
3155 | MDIO_MMS_PRT_ADDR(0x0));
3156 writeq(val64, &bar0->mdio_control);
3157 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3158 writeq(val64, &bar0->mdio_control);
3159 udelay(100);
3160
3161 /* Data transaction */
3162 val64 = MDIO_MMD_INDX_ADDR(addr) |
3163 MDIO_MMD_DEV_ADDR(mmd_type) |
3164 MDIO_MMS_PRT_ADDR(0x0) |
3165 MDIO_OP(MDIO_OP_READ_TRANS);
3166 writeq(val64, &bar0->mdio_control);
3167 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3168 writeq(val64, &bar0->mdio_control);
3169 udelay(100);
3170
3171 /* Read the value from regs */
3172 rval64 = readq(&bar0->mdio_control);
3173 rval64 = rval64 & 0xFFFF0000;
3174 rval64 = rval64 >> 16;
3175 return rval64;
3176 }
3177
3178 /**
3179 * s2io_chk_xpak_counter - Function to check the status of the xpak counters
3180 * @counter : counter value to be updated
3181 * @flag : flag to indicate the status
3182 * @type : counter type
3183 * Description:
3184 * This function is to check the status of the xpak counters value
3185 * NONE
3186 */
3187
s2io_chk_xpak_counter(u64 * counter,u64 * regs_stat,u32 index,u16 flag,u16 type)3188 static void s2io_chk_xpak_counter(u64 *counter, u64 * regs_stat, u32 index,
3189 u16 flag, u16 type)
3190 {
3191 u64 mask = 0x3;
3192 u64 val64;
3193 int i;
3194 for (i = 0; i < index; i++)
3195 mask = mask << 0x2;
3196
3197 if (flag > 0) {
3198 *counter = *counter + 1;
3199 val64 = *regs_stat & mask;
3200 val64 = val64 >> (index * 0x2);
3201 val64 = val64 + 1;
3202 if (val64 == 3) {
3203 switch (type) {
3204 case 1:
3205 DBG_PRINT(ERR_DBG,
3206 "Take Xframe NIC out of service.\n");
3207 DBG_PRINT(ERR_DBG,
3208 "Excessive temperatures may result in premature transceiver failure.\n");
3209 break;
3210 case 2:
3211 DBG_PRINT(ERR_DBG,
3212 "Take Xframe NIC out of service.\n");
3213 DBG_PRINT(ERR_DBG,
3214 "Excessive bias currents may indicate imminent laser diode failure.\n");
3215 break;
3216 case 3:
3217 DBG_PRINT(ERR_DBG,
3218 "Take Xframe NIC out of service.\n");
3219 DBG_PRINT(ERR_DBG,
3220 "Excessive laser output power may saturate far-end receiver.\n");
3221 break;
3222 default:
3223 DBG_PRINT(ERR_DBG,
3224 "Incorrect XPAK Alarm type\n");
3225 }
3226 val64 = 0x0;
3227 }
3228 val64 = val64 << (index * 0x2);
3229 *regs_stat = (*regs_stat & (~mask)) | (val64);
3230
3231 } else {
3232 *regs_stat = *regs_stat & (~mask);
3233 }
3234 }
3235
3236 /**
3237 * s2io_updt_xpak_counter - Function to update the xpak counters
3238 * @dev : pointer to net_device struct
3239 * Description:
3240 * This function is to upate the status of the xpak counters value
3241 * NONE
3242 */
s2io_updt_xpak_counter(struct net_device * dev)3243 static void s2io_updt_xpak_counter(struct net_device *dev)
3244 {
3245 u16 flag = 0x0;
3246 u16 type = 0x0;
3247 u16 val16 = 0x0;
3248 u64 val64 = 0x0;
3249 u64 addr = 0x0;
3250
3251 struct s2io_nic *sp = netdev_priv(dev);
3252 struct stat_block *stats = sp->mac_control.stats_info;
3253 struct xpakStat *xstats = &stats->xpak_stat;
3254
3255 /* Check the communication with the MDIO slave */
3256 addr = MDIO_CTRL1;
3257 val64 = 0x0;
3258 val64 = s2io_mdio_read(MDIO_MMD_PMAPMD, addr, dev);
3259 if ((val64 == 0xFFFF) || (val64 == 0x0000)) {
3260 DBG_PRINT(ERR_DBG,
3261 "ERR: MDIO slave access failed - Returned %llx\n",
3262 (unsigned long long)val64);
3263 return;
3264 }
3265
3266 /* Check for the expected value of control reg 1 */
3267 if (val64 != MDIO_CTRL1_SPEED10G) {
3268 DBG_PRINT(ERR_DBG, "Incorrect value at PMA address 0x0000 - "
3269 "Returned: %llx- Expected: 0x%x\n",
3270 (unsigned long long)val64, MDIO_CTRL1_SPEED10G);
3271 return;
3272 }
3273
3274 /* Loading the DOM register to MDIO register */
3275 addr = 0xA100;
3276 s2io_mdio_write(MDIO_MMD_PMAPMD, addr, val16, dev);
3277 val64 = s2io_mdio_read(MDIO_MMD_PMAPMD, addr, dev);
3278
3279 /* Reading the Alarm flags */
3280 addr = 0xA070;
3281 val64 = 0x0;
3282 val64 = s2io_mdio_read(MDIO_MMD_PMAPMD, addr, dev);
3283
3284 flag = CHECKBIT(val64, 0x7);
3285 type = 1;
3286 s2io_chk_xpak_counter(&xstats->alarm_transceiver_temp_high,
3287 &xstats->xpak_regs_stat,
3288 0x0, flag, type);
3289
3290 if (CHECKBIT(val64, 0x6))
3291 xstats->alarm_transceiver_temp_low++;
3292
3293 flag = CHECKBIT(val64, 0x3);
3294 type = 2;
3295 s2io_chk_xpak_counter(&xstats->alarm_laser_bias_current_high,
3296 &xstats->xpak_regs_stat,
3297 0x2, flag, type);
3298
3299 if (CHECKBIT(val64, 0x2))
3300 xstats->alarm_laser_bias_current_low++;
3301
3302 flag = CHECKBIT(val64, 0x1);
3303 type = 3;
3304 s2io_chk_xpak_counter(&xstats->alarm_laser_output_power_high,
3305 &xstats->xpak_regs_stat,
3306 0x4, flag, type);
3307
3308 if (CHECKBIT(val64, 0x0))
3309 xstats->alarm_laser_output_power_low++;
3310
3311 /* Reading the Warning flags */
3312 addr = 0xA074;
3313 val64 = 0x0;
3314 val64 = s2io_mdio_read(MDIO_MMD_PMAPMD, addr, dev);
3315
3316 if (CHECKBIT(val64, 0x7))
3317 xstats->warn_transceiver_temp_high++;
3318
3319 if (CHECKBIT(val64, 0x6))
3320 xstats->warn_transceiver_temp_low++;
3321
3322 if (CHECKBIT(val64, 0x3))
3323 xstats->warn_laser_bias_current_high++;
3324
3325 if (CHECKBIT(val64, 0x2))
3326 xstats->warn_laser_bias_current_low++;
3327
3328 if (CHECKBIT(val64, 0x1))
3329 xstats->warn_laser_output_power_high++;
3330
3331 if (CHECKBIT(val64, 0x0))
3332 xstats->warn_laser_output_power_low++;
3333 }
3334
3335 /**
3336 * wait_for_cmd_complete - waits for a command to complete.
3337 * @sp : private member of the device structure, which is a pointer to the
3338 * s2io_nic structure.
3339 * Description: Function that waits for a command to Write into RMAC
3340 * ADDR DATA registers to be completed and returns either success or
3341 * error depending on whether the command was complete or not.
3342 * Return value:
3343 * SUCCESS on success and FAILURE on failure.
3344 */
3345
wait_for_cmd_complete(void __iomem * addr,u64 busy_bit,int bit_state)3346 static int wait_for_cmd_complete(void __iomem *addr, u64 busy_bit,
3347 int bit_state)
3348 {
3349 int ret = FAILURE, cnt = 0, delay = 1;
3350 u64 val64;
3351
3352 if ((bit_state != S2IO_BIT_RESET) && (bit_state != S2IO_BIT_SET))
3353 return FAILURE;
3354
3355 do {
3356 val64 = readq(addr);
3357 if (bit_state == S2IO_BIT_RESET) {
3358 if (!(val64 & busy_bit)) {
3359 ret = SUCCESS;
3360 break;
3361 }
3362 } else {
3363 if (val64 & busy_bit) {
3364 ret = SUCCESS;
3365 break;
3366 }
3367 }
3368
3369 if (in_interrupt())
3370 mdelay(delay);
3371 else
3372 msleep(delay);
3373
3374 if (++cnt >= 10)
3375 delay = 50;
3376 } while (cnt < 20);
3377 return ret;
3378 }
3379 /*
3380 * check_pci_device_id - Checks if the device id is supported
3381 * @id : device id
3382 * Description: Function to check if the pci device id is supported by driver.
3383 * Return value: Actual device id if supported else PCI_ANY_ID
3384 */
check_pci_device_id(u16 id)3385 static u16 check_pci_device_id(u16 id)
3386 {
3387 switch (id) {
3388 case PCI_DEVICE_ID_HERC_WIN:
3389 case PCI_DEVICE_ID_HERC_UNI:
3390 return XFRAME_II_DEVICE;
3391 case PCI_DEVICE_ID_S2IO_UNI:
3392 case PCI_DEVICE_ID_S2IO_WIN:
3393 return XFRAME_I_DEVICE;
3394 default:
3395 return PCI_ANY_ID;
3396 }
3397 }
3398
3399 /**
3400 * s2io_reset - Resets the card.
3401 * @sp : private member of the device structure.
3402 * Description: Function to Reset the card. This function then also
3403 * restores the previously saved PCI configuration space registers as
3404 * the card reset also resets the configuration space.
3405 * Return value:
3406 * void.
3407 */
3408
s2io_reset(struct s2io_nic * sp)3409 static void s2io_reset(struct s2io_nic *sp)
3410 {
3411 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3412 u64 val64;
3413 u16 subid, pci_cmd;
3414 int i;
3415 u16 val16;
3416 unsigned long long up_cnt, down_cnt, up_time, down_time, reset_cnt;
3417 unsigned long long mem_alloc_cnt, mem_free_cnt, watchdog_cnt;
3418 struct stat_block *stats;
3419 struct swStat *swstats;
3420
3421 DBG_PRINT(INIT_DBG, "%s: Resetting XFrame card %s\n",
3422 __func__, pci_name(sp->pdev));
3423
3424 /* Back up the PCI-X CMD reg, dont want to lose MMRBC, OST settings */
3425 pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER, &(pci_cmd));
3426
3427 val64 = SW_RESET_ALL;
3428 writeq(val64, &bar0->sw_reset);
3429 if (strstr(sp->product_name, "CX4"))
3430 msleep(750);
3431 msleep(250);
3432 for (i = 0; i < S2IO_MAX_PCI_CONFIG_SPACE_REINIT; i++) {
3433
3434 /* Restore the PCI state saved during initialization. */
3435 pci_restore_state(sp->pdev);
3436 pci_save_state(sp->pdev);
3437 pci_read_config_word(sp->pdev, 0x2, &val16);
3438 if (check_pci_device_id(val16) != (u16)PCI_ANY_ID)
3439 break;
3440 msleep(200);
3441 }
3442
3443 if (check_pci_device_id(val16) == (u16)PCI_ANY_ID)
3444 DBG_PRINT(ERR_DBG, "%s SW_Reset failed!\n", __func__);
3445
3446 pci_write_config_word(sp->pdev, PCIX_COMMAND_REGISTER, pci_cmd);
3447
3448 s2io_init_pci(sp);
3449
3450 /* Set swapper to enable I/O register access */
3451 s2io_set_swapper(sp);
3452
3453 /* restore mac_addr entries */
3454 do_s2io_restore_unicast_mc(sp);
3455
3456 /* Restore the MSIX table entries from local variables */
3457 restore_xmsi_data(sp);
3458
3459 /* Clear certain PCI/PCI-X fields after reset */
3460 if (sp->device_type == XFRAME_II_DEVICE) {
3461 /* Clear "detected parity error" bit */
3462 pci_write_config_word(sp->pdev, PCI_STATUS, 0x8000);
3463
3464 /* Clearing PCIX Ecc status register */
3465 pci_write_config_dword(sp->pdev, 0x68, 0x7C);
3466
3467 /* Clearing PCI_STATUS error reflected here */
3468 writeq(s2BIT(62), &bar0->txpic_int_reg);
3469 }
3470
3471 /* Reset device statistics maintained by OS */
3472 memset(&sp->stats, 0, sizeof(struct net_device_stats));
3473
3474 stats = sp->mac_control.stats_info;
3475 swstats = &stats->sw_stat;
3476
3477 /* save link up/down time/cnt, reset/memory/watchdog cnt */
3478 up_cnt = swstats->link_up_cnt;
3479 down_cnt = swstats->link_down_cnt;
3480 up_time = swstats->link_up_time;
3481 down_time = swstats->link_down_time;
3482 reset_cnt = swstats->soft_reset_cnt;
3483 mem_alloc_cnt = swstats->mem_allocated;
3484 mem_free_cnt = swstats->mem_freed;
3485 watchdog_cnt = swstats->watchdog_timer_cnt;
3486
3487 memset(stats, 0, sizeof(struct stat_block));
3488
3489 /* restore link up/down time/cnt, reset/memory/watchdog cnt */
3490 swstats->link_up_cnt = up_cnt;
3491 swstats->link_down_cnt = down_cnt;
3492 swstats->link_up_time = up_time;
3493 swstats->link_down_time = down_time;
3494 swstats->soft_reset_cnt = reset_cnt;
3495 swstats->mem_allocated = mem_alloc_cnt;
3496 swstats->mem_freed = mem_free_cnt;
3497 swstats->watchdog_timer_cnt = watchdog_cnt;
3498
3499 /* SXE-002: Configure link and activity LED to turn it off */
3500 subid = sp->pdev->subsystem_device;
3501 if (((subid & 0xFF) >= 0x07) &&
3502 (sp->device_type == XFRAME_I_DEVICE)) {
3503 val64 = readq(&bar0->gpio_control);
3504 val64 |= 0x0000800000000000ULL;
3505 writeq(val64, &bar0->gpio_control);
3506 val64 = 0x0411040400000000ULL;
3507 writeq(val64, (void __iomem *)bar0 + 0x2700);
3508 }
3509
3510 /*
3511 * Clear spurious ECC interrupts that would have occurred on
3512 * XFRAME II cards after reset.
3513 */
3514 if (sp->device_type == XFRAME_II_DEVICE) {
3515 val64 = readq(&bar0->pcc_err_reg);
3516 writeq(val64, &bar0->pcc_err_reg);
3517 }
3518
3519 sp->device_enabled_once = false;
3520 }
3521
3522 /**
3523 * s2io_set_swapper - to set the swapper controle on the card
3524 * @sp : private member of the device structure,
3525 * pointer to the s2io_nic structure.
3526 * Description: Function to set the swapper control on the card
3527 * correctly depending on the 'endianness' of the system.
3528 * Return value:
3529 * SUCCESS on success and FAILURE on failure.
3530 */
3531
s2io_set_swapper(struct s2io_nic * sp)3532 static int s2io_set_swapper(struct s2io_nic *sp)
3533 {
3534 struct net_device *dev = sp->dev;
3535 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3536 u64 val64, valt, valr;
3537
3538 /*
3539 * Set proper endian settings and verify the same by reading
3540 * the PIF Feed-back register.
3541 */
3542
3543 val64 = readq(&bar0->pif_rd_swapper_fb);
3544 if (val64 != 0x0123456789ABCDEFULL) {
3545 int i = 0;
3546 static const u64 value[] = {
3547 0xC30000C3C30000C3ULL, /* FE=1, SE=1 */
3548 0x8100008181000081ULL, /* FE=1, SE=0 */
3549 0x4200004242000042ULL, /* FE=0, SE=1 */
3550 0 /* FE=0, SE=0 */
3551 };
3552
3553 while (i < 4) {
3554 writeq(value[i], &bar0->swapper_ctrl);
3555 val64 = readq(&bar0->pif_rd_swapper_fb);
3556 if (val64 == 0x0123456789ABCDEFULL)
3557 break;
3558 i++;
3559 }
3560 if (i == 4) {
3561 DBG_PRINT(ERR_DBG, "%s: Endian settings are wrong, "
3562 "feedback read %llx\n",
3563 dev->name, (unsigned long long)val64);
3564 return FAILURE;
3565 }
3566 valr = value[i];
3567 } else {
3568 valr = readq(&bar0->swapper_ctrl);
3569 }
3570
3571 valt = 0x0123456789ABCDEFULL;
3572 writeq(valt, &bar0->xmsi_address);
3573 val64 = readq(&bar0->xmsi_address);
3574
3575 if (val64 != valt) {
3576 int i = 0;
3577 static const u64 value[] = {
3578 0x00C3C30000C3C300ULL, /* FE=1, SE=1 */
3579 0x0081810000818100ULL, /* FE=1, SE=0 */
3580 0x0042420000424200ULL, /* FE=0, SE=1 */
3581 0 /* FE=0, SE=0 */
3582 };
3583
3584 while (i < 4) {
3585 writeq((value[i] | valr), &bar0->swapper_ctrl);
3586 writeq(valt, &bar0->xmsi_address);
3587 val64 = readq(&bar0->xmsi_address);
3588 if (val64 == valt)
3589 break;
3590 i++;
3591 }
3592 if (i == 4) {
3593 unsigned long long x = val64;
3594 DBG_PRINT(ERR_DBG,
3595 "Write failed, Xmsi_addr reads:0x%llx\n", x);
3596 return FAILURE;
3597 }
3598 }
3599 val64 = readq(&bar0->swapper_ctrl);
3600 val64 &= 0xFFFF000000000000ULL;
3601
3602 #ifdef __BIG_ENDIAN
3603 /*
3604 * The device by default set to a big endian format, so a
3605 * big endian driver need not set anything.
3606 */
3607 val64 |= (SWAPPER_CTRL_TXP_FE |
3608 SWAPPER_CTRL_TXP_SE |
3609 SWAPPER_CTRL_TXD_R_FE |
3610 SWAPPER_CTRL_TXD_W_FE |
3611 SWAPPER_CTRL_TXF_R_FE |
3612 SWAPPER_CTRL_RXD_R_FE |
3613 SWAPPER_CTRL_RXD_W_FE |
3614 SWAPPER_CTRL_RXF_W_FE |
3615 SWAPPER_CTRL_XMSI_FE |
3616 SWAPPER_CTRL_STATS_FE |
3617 SWAPPER_CTRL_STATS_SE);
3618 if (sp->config.intr_type == INTA)
3619 val64 |= SWAPPER_CTRL_XMSI_SE;
3620 writeq(val64, &bar0->swapper_ctrl);
3621 #else
3622 /*
3623 * Initially we enable all bits to make it accessible by the
3624 * driver, then we selectively enable only those bits that
3625 * we want to set.
3626 */
3627 val64 |= (SWAPPER_CTRL_TXP_FE |
3628 SWAPPER_CTRL_TXP_SE |
3629 SWAPPER_CTRL_TXD_R_FE |
3630 SWAPPER_CTRL_TXD_R_SE |
3631 SWAPPER_CTRL_TXD_W_FE |
3632 SWAPPER_CTRL_TXD_W_SE |
3633 SWAPPER_CTRL_TXF_R_FE |
3634 SWAPPER_CTRL_RXD_R_FE |
3635 SWAPPER_CTRL_RXD_R_SE |
3636 SWAPPER_CTRL_RXD_W_FE |
3637 SWAPPER_CTRL_RXD_W_SE |
3638 SWAPPER_CTRL_RXF_W_FE |
3639 SWAPPER_CTRL_XMSI_FE |
3640 SWAPPER_CTRL_STATS_FE |
3641 SWAPPER_CTRL_STATS_SE);
3642 if (sp->config.intr_type == INTA)
3643 val64 |= SWAPPER_CTRL_XMSI_SE;
3644 writeq(val64, &bar0->swapper_ctrl);
3645 #endif
3646 val64 = readq(&bar0->swapper_ctrl);
3647
3648 /*
3649 * Verifying if endian settings are accurate by reading a
3650 * feedback register.
3651 */
3652 val64 = readq(&bar0->pif_rd_swapper_fb);
3653 if (val64 != 0x0123456789ABCDEFULL) {
3654 /* Endian settings are incorrect, calls for another dekko. */
3655 DBG_PRINT(ERR_DBG,
3656 "%s: Endian settings are wrong, feedback read %llx\n",
3657 dev->name, (unsigned long long)val64);
3658 return FAILURE;
3659 }
3660
3661 return SUCCESS;
3662 }
3663
wait_for_msix_trans(struct s2io_nic * nic,int i)3664 static int wait_for_msix_trans(struct s2io_nic *nic, int i)
3665 {
3666 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3667 u64 val64;
3668 int ret = 0, cnt = 0;
3669
3670 do {
3671 val64 = readq(&bar0->xmsi_access);
3672 if (!(val64 & s2BIT(15)))
3673 break;
3674 mdelay(1);
3675 cnt++;
3676 } while (cnt < 5);
3677 if (cnt == 5) {
3678 DBG_PRINT(ERR_DBG, "XMSI # %d Access failed\n", i);
3679 ret = 1;
3680 }
3681
3682 return ret;
3683 }
3684
restore_xmsi_data(struct s2io_nic * nic)3685 static void restore_xmsi_data(struct s2io_nic *nic)
3686 {
3687 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3688 u64 val64;
3689 int i, msix_index;
3690
3691 if (nic->device_type == XFRAME_I_DEVICE)
3692 return;
3693
3694 for (i = 0; i < MAX_REQUESTED_MSI_X; i++) {
3695 msix_index = (i) ? ((i-1) * 8 + 1) : 0;
3696 writeq(nic->msix_info[i].addr, &bar0->xmsi_address);
3697 writeq(nic->msix_info[i].data, &bar0->xmsi_data);
3698 val64 = (s2BIT(7) | s2BIT(15) | vBIT(msix_index, 26, 6));
3699 writeq(val64, &bar0->xmsi_access);
3700 if (wait_for_msix_trans(nic, msix_index)) {
3701 DBG_PRINT(ERR_DBG, "%s: index: %d failed\n",
3702 __func__, msix_index);
3703 continue;
3704 }
3705 }
3706 }
3707
store_xmsi_data(struct s2io_nic * nic)3708 static void store_xmsi_data(struct s2io_nic *nic)
3709 {
3710 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3711 u64 val64, addr, data;
3712 int i, msix_index;
3713
3714 if (nic->device_type == XFRAME_I_DEVICE)
3715 return;
3716
3717 /* Store and display */
3718 for (i = 0; i < MAX_REQUESTED_MSI_X; i++) {
3719 msix_index = (i) ? ((i-1) * 8 + 1) : 0;
3720 val64 = (s2BIT(15) | vBIT(msix_index, 26, 6));
3721 writeq(val64, &bar0->xmsi_access);
3722 if (wait_for_msix_trans(nic, msix_index)) {
3723 DBG_PRINT(ERR_DBG, "%s: index: %d failed\n",
3724 __func__, msix_index);
3725 continue;
3726 }
3727 addr = readq(&bar0->xmsi_address);
3728 data = readq(&bar0->xmsi_data);
3729 if (addr && data) {
3730 nic->msix_info[i].addr = addr;
3731 nic->msix_info[i].data = data;
3732 }
3733 }
3734 }
3735
s2io_enable_msi_x(struct s2io_nic * nic)3736 static int s2io_enable_msi_x(struct s2io_nic *nic)
3737 {
3738 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3739 u64 rx_mat;
3740 u16 msi_control; /* Temp variable */
3741 int ret, i, j, msix_indx = 1;
3742 int size;
3743 struct stat_block *stats = nic->mac_control.stats_info;
3744 struct swStat *swstats = &stats->sw_stat;
3745
3746 size = nic->num_entries * sizeof(struct msix_entry);
3747 nic->entries = kzalloc(size, GFP_KERNEL);
3748 if (!nic->entries) {
3749 DBG_PRINT(INFO_DBG, "%s: Memory allocation failed\n",
3750 __func__);
3751 swstats->mem_alloc_fail_cnt++;
3752 return -ENOMEM;
3753 }
3754 swstats->mem_allocated += size;
3755
3756 size = nic->num_entries * sizeof(struct s2io_msix_entry);
3757 nic->s2io_entries = kzalloc(size, GFP_KERNEL);
3758 if (!nic->s2io_entries) {
3759 DBG_PRINT(INFO_DBG, "%s: Memory allocation failed\n",
3760 __func__);
3761 swstats->mem_alloc_fail_cnt++;
3762 kfree(nic->entries);
3763 swstats->mem_freed
3764 += (nic->num_entries * sizeof(struct msix_entry));
3765 return -ENOMEM;
3766 }
3767 swstats->mem_allocated += size;
3768
3769 nic->entries[0].entry = 0;
3770 nic->s2io_entries[0].entry = 0;
3771 nic->s2io_entries[0].in_use = MSIX_FLG;
3772 nic->s2io_entries[0].type = MSIX_ALARM_TYPE;
3773 nic->s2io_entries[0].arg = &nic->mac_control.fifos;
3774
3775 for (i = 1; i < nic->num_entries; i++) {
3776 nic->entries[i].entry = ((i - 1) * 8) + 1;
3777 nic->s2io_entries[i].entry = ((i - 1) * 8) + 1;
3778 nic->s2io_entries[i].arg = NULL;
3779 nic->s2io_entries[i].in_use = 0;
3780 }
3781
3782 rx_mat = readq(&bar0->rx_mat);
3783 for (j = 0; j < nic->config.rx_ring_num; j++) {
3784 rx_mat |= RX_MAT_SET(j, msix_indx);
3785 nic->s2io_entries[j+1].arg = &nic->mac_control.rings[j];
3786 nic->s2io_entries[j+1].type = MSIX_RING_TYPE;
3787 nic->s2io_entries[j+1].in_use = MSIX_FLG;
3788 msix_indx += 8;
3789 }
3790 writeq(rx_mat, &bar0->rx_mat);
3791 readq(&bar0->rx_mat);
3792
3793 ret = pci_enable_msix(nic->pdev, nic->entries, nic->num_entries);
3794 /* We fail init if error or we get less vectors than min required */
3795 if (ret) {
3796 DBG_PRINT(ERR_DBG, "Enabling MSI-X failed\n");
3797 kfree(nic->entries);
3798 swstats->mem_freed += nic->num_entries *
3799 sizeof(struct msix_entry);
3800 kfree(nic->s2io_entries);
3801 swstats->mem_freed += nic->num_entries *
3802 sizeof(struct s2io_msix_entry);
3803 nic->entries = NULL;
3804 nic->s2io_entries = NULL;
3805 return -ENOMEM;
3806 }
3807
3808 /*
3809 * To enable MSI-X, MSI also needs to be enabled, due to a bug
3810 * in the herc NIC. (Temp change, needs to be removed later)
3811 */
3812 pci_read_config_word(nic->pdev, 0x42, &msi_control);
3813 msi_control |= 0x1; /* Enable MSI */
3814 pci_write_config_word(nic->pdev, 0x42, msi_control);
3815
3816 return 0;
3817 }
3818
3819 /* Handle software interrupt used during MSI(X) test */
s2io_test_intr(int irq,void * dev_id)3820 static irqreturn_t s2io_test_intr(int irq, void *dev_id)
3821 {
3822 struct s2io_nic *sp = dev_id;
3823
3824 sp->msi_detected = 1;
3825 wake_up(&sp->msi_wait);
3826
3827 return IRQ_HANDLED;
3828 }
3829
3830 /* Test interrupt path by forcing a a software IRQ */
s2io_test_msi(struct s2io_nic * sp)3831 static int s2io_test_msi(struct s2io_nic *sp)
3832 {
3833 struct pci_dev *pdev = sp->pdev;
3834 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3835 int err;
3836 u64 val64, saved64;
3837
3838 err = request_irq(sp->entries[1].vector, s2io_test_intr, 0,
3839 sp->name, sp);
3840 if (err) {
3841 DBG_PRINT(ERR_DBG, "%s: PCI %s: cannot assign irq %d\n",
3842 sp->dev->name, pci_name(pdev), pdev->irq);
3843 return err;
3844 }
3845
3846 init_waitqueue_head(&sp->msi_wait);
3847 sp->msi_detected = 0;
3848
3849 saved64 = val64 = readq(&bar0->scheduled_int_ctrl);
3850 val64 |= SCHED_INT_CTRL_ONE_SHOT;
3851 val64 |= SCHED_INT_CTRL_TIMER_EN;
3852 val64 |= SCHED_INT_CTRL_INT2MSI(1);
3853 writeq(val64, &bar0->scheduled_int_ctrl);
3854
3855 wait_event_timeout(sp->msi_wait, sp->msi_detected, HZ/10);
3856
3857 if (!sp->msi_detected) {
3858 /* MSI(X) test failed, go back to INTx mode */
3859 DBG_PRINT(ERR_DBG, "%s: PCI %s: No interrupt was generated "
3860 "using MSI(X) during test\n",
3861 sp->dev->name, pci_name(pdev));
3862
3863 err = -EOPNOTSUPP;
3864 }
3865
3866 free_irq(sp->entries[1].vector, sp);
3867
3868 writeq(saved64, &bar0->scheduled_int_ctrl);
3869
3870 return err;
3871 }
3872
remove_msix_isr(struct s2io_nic * sp)3873 static void remove_msix_isr(struct s2io_nic *sp)
3874 {
3875 int i;
3876 u16 msi_control;
3877
3878 for (i = 0; i < sp->num_entries; i++) {
3879 if (sp->s2io_entries[i].in_use == MSIX_REGISTERED_SUCCESS) {
3880 int vector = sp->entries[i].vector;
3881 void *arg = sp->s2io_entries[i].arg;
3882 free_irq(vector, arg);
3883 }
3884 }
3885
3886 kfree(sp->entries);
3887 kfree(sp->s2io_entries);
3888 sp->entries = NULL;
3889 sp->s2io_entries = NULL;
3890
3891 pci_read_config_word(sp->pdev, 0x42, &msi_control);
3892 msi_control &= 0xFFFE; /* Disable MSI */
3893 pci_write_config_word(sp->pdev, 0x42, msi_control);
3894
3895 pci_disable_msix(sp->pdev);
3896 }
3897
remove_inta_isr(struct s2io_nic * sp)3898 static void remove_inta_isr(struct s2io_nic *sp)
3899 {
3900 struct net_device *dev = sp->dev;
3901
3902 free_irq(sp->pdev->irq, dev);
3903 }
3904
3905 /* ********************************************************* *
3906 * Functions defined below concern the OS part of the driver *
3907 * ********************************************************* */
3908
3909 /**
3910 * s2io_open - open entry point of the driver
3911 * @dev : pointer to the device structure.
3912 * Description:
3913 * This function is the open entry point of the driver. It mainly calls a
3914 * function to allocate Rx buffers and inserts them into the buffer
3915 * descriptors and then enables the Rx part of the NIC.
3916 * Return value:
3917 * 0 on success and an appropriate (-)ve integer as defined in errno.h
3918 * file on failure.
3919 */
3920
s2io_open(struct net_device * dev)3921 static int s2io_open(struct net_device *dev)
3922 {
3923 struct s2io_nic *sp = netdev_priv(dev);
3924 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
3925 int err = 0;
3926
3927 /*
3928 * Make sure you have link off by default every time
3929 * Nic is initialized
3930 */
3931 netif_carrier_off(dev);
3932 sp->last_link_state = 0;
3933
3934 /* Initialize H/W and enable interrupts */
3935 err = s2io_card_up(sp);
3936 if (err) {
3937 DBG_PRINT(ERR_DBG, "%s: H/W initialization failed\n",
3938 dev->name);
3939 goto hw_init_failed;
3940 }
3941
3942 if (do_s2io_prog_unicast(dev, dev->dev_addr) == FAILURE) {
3943 DBG_PRINT(ERR_DBG, "Set Mac Address Failed\n");
3944 s2io_card_down(sp);
3945 err = -ENODEV;
3946 goto hw_init_failed;
3947 }
3948 s2io_start_all_tx_queue(sp);
3949 return 0;
3950
3951 hw_init_failed:
3952 if (sp->config.intr_type == MSI_X) {
3953 if (sp->entries) {
3954 kfree(sp->entries);
3955 swstats->mem_freed += sp->num_entries *
3956 sizeof(struct msix_entry);
3957 }
3958 if (sp->s2io_entries) {
3959 kfree(sp->s2io_entries);
3960 swstats->mem_freed += sp->num_entries *
3961 sizeof(struct s2io_msix_entry);
3962 }
3963 }
3964 return err;
3965 }
3966
3967 /**
3968 * s2io_close -close entry point of the driver
3969 * @dev : device pointer.
3970 * Description:
3971 * This is the stop entry point of the driver. It needs to undo exactly
3972 * whatever was done by the open entry point,thus it's usually referred to
3973 * as the close function.Among other things this function mainly stops the
3974 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3975 * Return value:
3976 * 0 on success and an appropriate (-)ve integer as defined in errno.h
3977 * file on failure.
3978 */
3979
s2io_close(struct net_device * dev)3980 static int s2io_close(struct net_device *dev)
3981 {
3982 struct s2io_nic *sp = netdev_priv(dev);
3983 struct config_param *config = &sp->config;
3984 u64 tmp64;
3985 int offset;
3986
3987 /* Return if the device is already closed *
3988 * Can happen when s2io_card_up failed in change_mtu *
3989 */
3990 if (!is_s2io_card_up(sp))
3991 return 0;
3992
3993 s2io_stop_all_tx_queue(sp);
3994 /* delete all populated mac entries */
3995 for (offset = 1; offset < config->max_mc_addr; offset++) {
3996 tmp64 = do_s2io_read_unicast_mc(sp, offset);
3997 if (tmp64 != S2IO_DISABLE_MAC_ENTRY)
3998 do_s2io_delete_unicast_mc(sp, tmp64);
3999 }
4000
4001 s2io_card_down(sp);
4002
4003 return 0;
4004 }
4005
4006 /**
4007 * s2io_xmit - Tx entry point of te driver
4008 * @skb : the socket buffer containing the Tx data.
4009 * @dev : device pointer.
4010 * Description :
4011 * This function is the Tx entry point of the driver. S2IO NIC supports
4012 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
4013 * NOTE: when device can't queue the pkt,just the trans_start variable will
4014 * not be upadted.
4015 * Return value:
4016 * 0 on success & 1 on failure.
4017 */
4018
s2io_xmit(struct sk_buff * skb,struct net_device * dev)4019 static netdev_tx_t s2io_xmit(struct sk_buff *skb, struct net_device *dev)
4020 {
4021 struct s2io_nic *sp = netdev_priv(dev);
4022 u16 frg_cnt, frg_len, i, queue, queue_len, put_off, get_off;
4023 register u64 val64;
4024 struct TxD *txdp;
4025 struct TxFIFO_element __iomem *tx_fifo;
4026 unsigned long flags = 0;
4027 u16 vlan_tag = 0;
4028 struct fifo_info *fifo = NULL;
4029 int do_spin_lock = 1;
4030 int offload_type;
4031 int enable_per_list_interrupt = 0;
4032 struct config_param *config = &sp->config;
4033 struct mac_info *mac_control = &sp->mac_control;
4034 struct stat_block *stats = mac_control->stats_info;
4035 struct swStat *swstats = &stats->sw_stat;
4036
4037 DBG_PRINT(TX_DBG, "%s: In Neterion Tx routine\n", dev->name);
4038
4039 if (unlikely(skb->len <= 0)) {
4040 DBG_PRINT(TX_DBG, "%s: Buffer has no data..\n", dev->name);
4041 dev_kfree_skb_any(skb);
4042 return NETDEV_TX_OK;
4043 }
4044
4045 if (!is_s2io_card_up(sp)) {
4046 DBG_PRINT(TX_DBG, "%s: Card going down for reset\n",
4047 dev->name);
4048 dev_kfree_skb(skb);
4049 return NETDEV_TX_OK;
4050 }
4051
4052 queue = 0;
4053 if (vlan_tx_tag_present(skb))
4054 vlan_tag = vlan_tx_tag_get(skb);
4055 if (sp->config.tx_steering_type == TX_DEFAULT_STEERING) {
4056 if (skb->protocol == htons(ETH_P_IP)) {
4057 struct iphdr *ip;
4058 struct tcphdr *th;
4059 ip = ip_hdr(skb);
4060
4061 if (!ip_is_fragment(ip)) {
4062 th = (struct tcphdr *)(((unsigned char *)ip) +
4063 ip->ihl*4);
4064
4065 if (ip->protocol == IPPROTO_TCP) {
4066 queue_len = sp->total_tcp_fifos;
4067 queue = (ntohs(th->source) +
4068 ntohs(th->dest)) &
4069 sp->fifo_selector[queue_len - 1];
4070 if (queue >= queue_len)
4071 queue = queue_len - 1;
4072 } else if (ip->protocol == IPPROTO_UDP) {
4073 queue_len = sp->total_udp_fifos;
4074 queue = (ntohs(th->source) +
4075 ntohs(th->dest)) &
4076 sp->fifo_selector[queue_len - 1];
4077 if (queue >= queue_len)
4078 queue = queue_len - 1;
4079 queue += sp->udp_fifo_idx;
4080 if (skb->len > 1024)
4081 enable_per_list_interrupt = 1;
4082 do_spin_lock = 0;
4083 }
4084 }
4085 }
4086 } else if (sp->config.tx_steering_type == TX_PRIORITY_STEERING)
4087 /* get fifo number based on skb->priority value */
4088 queue = config->fifo_mapping
4089 [skb->priority & (MAX_TX_FIFOS - 1)];
4090 fifo = &mac_control->fifos[queue];
4091
4092 if (do_spin_lock)
4093 spin_lock_irqsave(&fifo->tx_lock, flags);
4094 else {
4095 if (unlikely(!spin_trylock_irqsave(&fifo->tx_lock, flags)))
4096 return NETDEV_TX_LOCKED;
4097 }
4098
4099 if (sp->config.multiq) {
4100 if (__netif_subqueue_stopped(dev, fifo->fifo_no)) {
4101 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4102 return NETDEV_TX_BUSY;
4103 }
4104 } else if (unlikely(fifo->queue_state == FIFO_QUEUE_STOP)) {
4105 if (netif_queue_stopped(dev)) {
4106 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4107 return NETDEV_TX_BUSY;
4108 }
4109 }
4110
4111 put_off = (u16)fifo->tx_curr_put_info.offset;
4112 get_off = (u16)fifo->tx_curr_get_info.offset;
4113 txdp = fifo->list_info[put_off].list_virt_addr;
4114
4115 queue_len = fifo->tx_curr_put_info.fifo_len + 1;
4116 /* Avoid "put" pointer going beyond "get" pointer */
4117 if (txdp->Host_Control ||
4118 ((put_off+1) == queue_len ? 0 : (put_off+1)) == get_off) {
4119 DBG_PRINT(TX_DBG, "Error in xmit, No free TXDs.\n");
4120 s2io_stop_tx_queue(sp, fifo->fifo_no);
4121 dev_kfree_skb(skb);
4122 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4123 return NETDEV_TX_OK;
4124 }
4125
4126 offload_type = s2io_offload_type(skb);
4127 if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
4128 txdp->Control_1 |= TXD_TCP_LSO_EN;
4129 txdp->Control_1 |= TXD_TCP_LSO_MSS(s2io_tcp_mss(skb));
4130 }
4131 if (skb->ip_summed == CHECKSUM_PARTIAL) {
4132 txdp->Control_2 |= (TXD_TX_CKO_IPV4_EN |
4133 TXD_TX_CKO_TCP_EN |
4134 TXD_TX_CKO_UDP_EN);
4135 }
4136 txdp->Control_1 |= TXD_GATHER_CODE_FIRST;
4137 txdp->Control_1 |= TXD_LIST_OWN_XENA;
4138 txdp->Control_2 |= TXD_INT_NUMBER(fifo->fifo_no);
4139 if (enable_per_list_interrupt)
4140 if (put_off & (queue_len >> 5))
4141 txdp->Control_2 |= TXD_INT_TYPE_PER_LIST;
4142 if (vlan_tag) {
4143 txdp->Control_2 |= TXD_VLAN_ENABLE;
4144 txdp->Control_2 |= TXD_VLAN_TAG(vlan_tag);
4145 }
4146
4147 frg_len = skb_headlen(skb);
4148 if (offload_type == SKB_GSO_UDP) {
4149 int ufo_size;
4150
4151 ufo_size = s2io_udp_mss(skb);
4152 ufo_size &= ~7;
4153 txdp->Control_1 |= TXD_UFO_EN;
4154 txdp->Control_1 |= TXD_UFO_MSS(ufo_size);
4155 txdp->Control_1 |= TXD_BUFFER0_SIZE(8);
4156 #ifdef __BIG_ENDIAN
4157 /* both variants do cpu_to_be64(be32_to_cpu(...)) */
4158 fifo->ufo_in_band_v[put_off] =
4159 (__force u64)skb_shinfo(skb)->ip6_frag_id;
4160 #else
4161 fifo->ufo_in_band_v[put_off] =
4162 (__force u64)skb_shinfo(skb)->ip6_frag_id << 32;
4163 #endif
4164 txdp->Host_Control = (unsigned long)fifo->ufo_in_band_v;
4165 txdp->Buffer_Pointer = pci_map_single(sp->pdev,
4166 fifo->ufo_in_band_v,
4167 sizeof(u64),
4168 PCI_DMA_TODEVICE);
4169 if (pci_dma_mapping_error(sp->pdev, txdp->Buffer_Pointer))
4170 goto pci_map_failed;
4171 txdp++;
4172 }
4173
4174 txdp->Buffer_Pointer = pci_map_single(sp->pdev, skb->data,
4175 frg_len, PCI_DMA_TODEVICE);
4176 if (pci_dma_mapping_error(sp->pdev, txdp->Buffer_Pointer))
4177 goto pci_map_failed;
4178
4179 txdp->Host_Control = (unsigned long)skb;
4180 txdp->Control_1 |= TXD_BUFFER0_SIZE(frg_len);
4181 if (offload_type == SKB_GSO_UDP)
4182 txdp->Control_1 |= TXD_UFO_EN;
4183
4184 frg_cnt = skb_shinfo(skb)->nr_frags;
4185 /* For fragmented SKB. */
4186 for (i = 0; i < frg_cnt; i++) {
4187 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4188 /* A '0' length fragment will be ignored */
4189 if (!skb_frag_size(frag))
4190 continue;
4191 txdp++;
4192 txdp->Buffer_Pointer = (u64)skb_frag_dma_map(&sp->pdev->dev,
4193 frag, 0,
4194 skb_frag_size(frag),
4195 DMA_TO_DEVICE);
4196 txdp->Control_1 = TXD_BUFFER0_SIZE(skb_frag_size(frag));
4197 if (offload_type == SKB_GSO_UDP)
4198 txdp->Control_1 |= TXD_UFO_EN;
4199 }
4200 txdp->Control_1 |= TXD_GATHER_CODE_LAST;
4201
4202 if (offload_type == SKB_GSO_UDP)
4203 frg_cnt++; /* as Txd0 was used for inband header */
4204
4205 tx_fifo = mac_control->tx_FIFO_start[queue];
4206 val64 = fifo->list_info[put_off].list_phy_addr;
4207 writeq(val64, &tx_fifo->TxDL_Pointer);
4208
4209 val64 = (TX_FIFO_LAST_TXD_NUM(frg_cnt) | TX_FIFO_FIRST_LIST |
4210 TX_FIFO_LAST_LIST);
4211 if (offload_type)
4212 val64 |= TX_FIFO_SPECIAL_FUNC;
4213
4214 writeq(val64, &tx_fifo->List_Control);
4215
4216 mmiowb();
4217
4218 put_off++;
4219 if (put_off == fifo->tx_curr_put_info.fifo_len + 1)
4220 put_off = 0;
4221 fifo->tx_curr_put_info.offset = put_off;
4222
4223 /* Avoid "put" pointer going beyond "get" pointer */
4224 if (((put_off+1) == queue_len ? 0 : (put_off+1)) == get_off) {
4225 swstats->fifo_full_cnt++;
4226 DBG_PRINT(TX_DBG,
4227 "No free TxDs for xmit, Put: 0x%x Get:0x%x\n",
4228 put_off, get_off);
4229 s2io_stop_tx_queue(sp, fifo->fifo_no);
4230 }
4231 swstats->mem_allocated += skb->truesize;
4232 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4233
4234 if (sp->config.intr_type == MSI_X)
4235 tx_intr_handler(fifo);
4236
4237 return NETDEV_TX_OK;
4238
4239 pci_map_failed:
4240 swstats->pci_map_fail_cnt++;
4241 s2io_stop_tx_queue(sp, fifo->fifo_no);
4242 swstats->mem_freed += skb->truesize;
4243 dev_kfree_skb(skb);
4244 spin_unlock_irqrestore(&fifo->tx_lock, flags);
4245 return NETDEV_TX_OK;
4246 }
4247
4248 static void
s2io_alarm_handle(unsigned long data)4249 s2io_alarm_handle(unsigned long data)
4250 {
4251 struct s2io_nic *sp = (struct s2io_nic *)data;
4252 struct net_device *dev = sp->dev;
4253
4254 s2io_handle_errors(dev);
4255 mod_timer(&sp->alarm_timer, jiffies + HZ / 2);
4256 }
4257
s2io_msix_ring_handle(int irq,void * dev_id)4258 static irqreturn_t s2io_msix_ring_handle(int irq, void *dev_id)
4259 {
4260 struct ring_info *ring = (struct ring_info *)dev_id;
4261 struct s2io_nic *sp = ring->nic;
4262 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4263
4264 if (unlikely(!is_s2io_card_up(sp)))
4265 return IRQ_HANDLED;
4266
4267 if (sp->config.napi) {
4268 u8 __iomem *addr = NULL;
4269 u8 val8 = 0;
4270
4271 addr = (u8 __iomem *)&bar0->xmsi_mask_reg;
4272 addr += (7 - ring->ring_no);
4273 val8 = (ring->ring_no == 0) ? 0x7f : 0xff;
4274 writeb(val8, addr);
4275 val8 = readb(addr);
4276 napi_schedule(&ring->napi);
4277 } else {
4278 rx_intr_handler(ring, 0);
4279 s2io_chk_rx_buffers(sp, ring);
4280 }
4281
4282 return IRQ_HANDLED;
4283 }
4284
s2io_msix_fifo_handle(int irq,void * dev_id)4285 static irqreturn_t s2io_msix_fifo_handle(int irq, void *dev_id)
4286 {
4287 int i;
4288 struct fifo_info *fifos = (struct fifo_info *)dev_id;
4289 struct s2io_nic *sp = fifos->nic;
4290 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4291 struct config_param *config = &sp->config;
4292 u64 reason;
4293
4294 if (unlikely(!is_s2io_card_up(sp)))
4295 return IRQ_NONE;
4296
4297 reason = readq(&bar0->general_int_status);
4298 if (unlikely(reason == S2IO_MINUS_ONE))
4299 /* Nothing much can be done. Get out */
4300 return IRQ_HANDLED;
4301
4302 if (reason & (GEN_INTR_TXPIC | GEN_INTR_TXTRAFFIC)) {
4303 writeq(S2IO_MINUS_ONE, &bar0->general_int_mask);
4304
4305 if (reason & GEN_INTR_TXPIC)
4306 s2io_txpic_intr_handle(sp);
4307
4308 if (reason & GEN_INTR_TXTRAFFIC)
4309 writeq(S2IO_MINUS_ONE, &bar0->tx_traffic_int);
4310
4311 for (i = 0; i < config->tx_fifo_num; i++)
4312 tx_intr_handler(&fifos[i]);
4313
4314 writeq(sp->general_int_mask, &bar0->general_int_mask);
4315 readl(&bar0->general_int_status);
4316 return IRQ_HANDLED;
4317 }
4318 /* The interrupt was not raised by us */
4319 return IRQ_NONE;
4320 }
4321
s2io_txpic_intr_handle(struct s2io_nic * sp)4322 static void s2io_txpic_intr_handle(struct s2io_nic *sp)
4323 {
4324 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4325 u64 val64;
4326
4327 val64 = readq(&bar0->pic_int_status);
4328 if (val64 & PIC_INT_GPIO) {
4329 val64 = readq(&bar0->gpio_int_reg);
4330 if ((val64 & GPIO_INT_REG_LINK_DOWN) &&
4331 (val64 & GPIO_INT_REG_LINK_UP)) {
4332 /*
4333 * This is unstable state so clear both up/down
4334 * interrupt and adapter to re-evaluate the link state.
4335 */
4336 val64 |= GPIO_INT_REG_LINK_DOWN;
4337 val64 |= GPIO_INT_REG_LINK_UP;
4338 writeq(val64, &bar0->gpio_int_reg);
4339 val64 = readq(&bar0->gpio_int_mask);
4340 val64 &= ~(GPIO_INT_MASK_LINK_UP |
4341 GPIO_INT_MASK_LINK_DOWN);
4342 writeq(val64, &bar0->gpio_int_mask);
4343 } else if (val64 & GPIO_INT_REG_LINK_UP) {
4344 val64 = readq(&bar0->adapter_status);
4345 /* Enable Adapter */
4346 val64 = readq(&bar0->adapter_control);
4347 val64 |= ADAPTER_CNTL_EN;
4348 writeq(val64, &bar0->adapter_control);
4349 val64 |= ADAPTER_LED_ON;
4350 writeq(val64, &bar0->adapter_control);
4351 if (!sp->device_enabled_once)
4352 sp->device_enabled_once = 1;
4353
4354 s2io_link(sp, LINK_UP);
4355 /*
4356 * unmask link down interrupt and mask link-up
4357 * intr
4358 */
4359 val64 = readq(&bar0->gpio_int_mask);
4360 val64 &= ~GPIO_INT_MASK_LINK_DOWN;
4361 val64 |= GPIO_INT_MASK_LINK_UP;
4362 writeq(val64, &bar0->gpio_int_mask);
4363
4364 } else if (val64 & GPIO_INT_REG_LINK_DOWN) {
4365 val64 = readq(&bar0->adapter_status);
4366 s2io_link(sp, LINK_DOWN);
4367 /* Link is down so unmaks link up interrupt */
4368 val64 = readq(&bar0->gpio_int_mask);
4369 val64 &= ~GPIO_INT_MASK_LINK_UP;
4370 val64 |= GPIO_INT_MASK_LINK_DOWN;
4371 writeq(val64, &bar0->gpio_int_mask);
4372
4373 /* turn off LED */
4374 val64 = readq(&bar0->adapter_control);
4375 val64 = val64 & (~ADAPTER_LED_ON);
4376 writeq(val64, &bar0->adapter_control);
4377 }
4378 }
4379 val64 = readq(&bar0->gpio_int_mask);
4380 }
4381
4382 /**
4383 * do_s2io_chk_alarm_bit - Check for alarm and incrment the counter
4384 * @value: alarm bits
4385 * @addr: address value
4386 * @cnt: counter variable
4387 * Description: Check for alarm and increment the counter
4388 * Return Value:
4389 * 1 - if alarm bit set
4390 * 0 - if alarm bit is not set
4391 */
do_s2io_chk_alarm_bit(u64 value,void __iomem * addr,unsigned long long * cnt)4392 static int do_s2io_chk_alarm_bit(u64 value, void __iomem *addr,
4393 unsigned long long *cnt)
4394 {
4395 u64 val64;
4396 val64 = readq(addr);
4397 if (val64 & value) {
4398 writeq(val64, addr);
4399 (*cnt)++;
4400 return 1;
4401 }
4402 return 0;
4403
4404 }
4405
4406 /**
4407 * s2io_handle_errors - Xframe error indication handler
4408 * @nic: device private variable
4409 * Description: Handle alarms such as loss of link, single or
4410 * double ECC errors, critical and serious errors.
4411 * Return Value:
4412 * NONE
4413 */
s2io_handle_errors(void * dev_id)4414 static void s2io_handle_errors(void *dev_id)
4415 {
4416 struct net_device *dev = (struct net_device *)dev_id;
4417 struct s2io_nic *sp = netdev_priv(dev);
4418 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4419 u64 temp64 = 0, val64 = 0;
4420 int i = 0;
4421
4422 struct swStat *sw_stat = &sp->mac_control.stats_info->sw_stat;
4423 struct xpakStat *stats = &sp->mac_control.stats_info->xpak_stat;
4424
4425 if (!is_s2io_card_up(sp))
4426 return;
4427
4428 if (pci_channel_offline(sp->pdev))
4429 return;
4430
4431 memset(&sw_stat->ring_full_cnt, 0,
4432 sizeof(sw_stat->ring_full_cnt));
4433
4434 /* Handling the XPAK counters update */
4435 if (stats->xpak_timer_count < 72000) {
4436 /* waiting for an hour */
4437 stats->xpak_timer_count++;
4438 } else {
4439 s2io_updt_xpak_counter(dev);
4440 /* reset the count to zero */
4441 stats->xpak_timer_count = 0;
4442 }
4443
4444 /* Handling link status change error Intr */
4445 if (s2io_link_fault_indication(sp) == MAC_RMAC_ERR_TIMER) {
4446 val64 = readq(&bar0->mac_rmac_err_reg);
4447 writeq(val64, &bar0->mac_rmac_err_reg);
4448 if (val64 & RMAC_LINK_STATE_CHANGE_INT)
4449 schedule_work(&sp->set_link_task);
4450 }
4451
4452 /* In case of a serious error, the device will be Reset. */
4453 if (do_s2io_chk_alarm_bit(SERR_SOURCE_ANY, &bar0->serr_source,
4454 &sw_stat->serious_err_cnt))
4455 goto reset;
4456
4457 /* Check for data parity error */
4458 if (do_s2io_chk_alarm_bit(GPIO_INT_REG_DP_ERR_INT, &bar0->gpio_int_reg,
4459 &sw_stat->parity_err_cnt))
4460 goto reset;
4461
4462 /* Check for ring full counter */
4463 if (sp->device_type == XFRAME_II_DEVICE) {
4464 val64 = readq(&bar0->ring_bump_counter1);
4465 for (i = 0; i < 4; i++) {
4466 temp64 = (val64 & vBIT(0xFFFF, (i*16), 16));
4467 temp64 >>= 64 - ((i+1)*16);
4468 sw_stat->ring_full_cnt[i] += temp64;
4469 }
4470
4471 val64 = readq(&bar0->ring_bump_counter2);
4472 for (i = 0; i < 4; i++) {
4473 temp64 = (val64 & vBIT(0xFFFF, (i*16), 16));
4474 temp64 >>= 64 - ((i+1)*16);
4475 sw_stat->ring_full_cnt[i+4] += temp64;
4476 }
4477 }
4478
4479 val64 = readq(&bar0->txdma_int_status);
4480 /*check for pfc_err*/
4481 if (val64 & TXDMA_PFC_INT) {
4482 if (do_s2io_chk_alarm_bit(PFC_ECC_DB_ERR | PFC_SM_ERR_ALARM |
4483 PFC_MISC_0_ERR | PFC_MISC_1_ERR |
4484 PFC_PCIX_ERR,
4485 &bar0->pfc_err_reg,
4486 &sw_stat->pfc_err_cnt))
4487 goto reset;
4488 do_s2io_chk_alarm_bit(PFC_ECC_SG_ERR,
4489 &bar0->pfc_err_reg,
4490 &sw_stat->pfc_err_cnt);
4491 }
4492
4493 /*check for tda_err*/
4494 if (val64 & TXDMA_TDA_INT) {
4495 if (do_s2io_chk_alarm_bit(TDA_Fn_ECC_DB_ERR |
4496 TDA_SM0_ERR_ALARM |
4497 TDA_SM1_ERR_ALARM,
4498 &bar0->tda_err_reg,
4499 &sw_stat->tda_err_cnt))
4500 goto reset;
4501 do_s2io_chk_alarm_bit(TDA_Fn_ECC_SG_ERR | TDA_PCIX_ERR,
4502 &bar0->tda_err_reg,
4503 &sw_stat->tda_err_cnt);
4504 }
4505 /*check for pcc_err*/
4506 if (val64 & TXDMA_PCC_INT) {
4507 if (do_s2io_chk_alarm_bit(PCC_SM_ERR_ALARM | PCC_WR_ERR_ALARM |
4508 PCC_N_SERR | PCC_6_COF_OV_ERR |
4509 PCC_7_COF_OV_ERR | PCC_6_LSO_OV_ERR |
4510 PCC_7_LSO_OV_ERR | PCC_FB_ECC_DB_ERR |
4511 PCC_TXB_ECC_DB_ERR,
4512 &bar0->pcc_err_reg,
4513 &sw_stat->pcc_err_cnt))
4514 goto reset;
4515 do_s2io_chk_alarm_bit(PCC_FB_ECC_SG_ERR | PCC_TXB_ECC_SG_ERR,
4516 &bar0->pcc_err_reg,
4517 &sw_stat->pcc_err_cnt);
4518 }
4519
4520 /*check for tti_err*/
4521 if (val64 & TXDMA_TTI_INT) {
4522 if (do_s2io_chk_alarm_bit(TTI_SM_ERR_ALARM,
4523 &bar0->tti_err_reg,
4524 &sw_stat->tti_err_cnt))
4525 goto reset;
4526 do_s2io_chk_alarm_bit(TTI_ECC_SG_ERR | TTI_ECC_DB_ERR,
4527 &bar0->tti_err_reg,
4528 &sw_stat->tti_err_cnt);
4529 }
4530
4531 /*check for lso_err*/
4532 if (val64 & TXDMA_LSO_INT) {
4533 if (do_s2io_chk_alarm_bit(LSO6_ABORT | LSO7_ABORT |
4534 LSO6_SM_ERR_ALARM | LSO7_SM_ERR_ALARM,
4535 &bar0->lso_err_reg,
4536 &sw_stat->lso_err_cnt))
4537 goto reset;
4538 do_s2io_chk_alarm_bit(LSO6_SEND_OFLOW | LSO7_SEND_OFLOW,
4539 &bar0->lso_err_reg,
4540 &sw_stat->lso_err_cnt);
4541 }
4542
4543 /*check for tpa_err*/
4544 if (val64 & TXDMA_TPA_INT) {
4545 if (do_s2io_chk_alarm_bit(TPA_SM_ERR_ALARM,
4546 &bar0->tpa_err_reg,
4547 &sw_stat->tpa_err_cnt))
4548 goto reset;
4549 do_s2io_chk_alarm_bit(TPA_TX_FRM_DROP,
4550 &bar0->tpa_err_reg,
4551 &sw_stat->tpa_err_cnt);
4552 }
4553
4554 /*check for sm_err*/
4555 if (val64 & TXDMA_SM_INT) {
4556 if (do_s2io_chk_alarm_bit(SM_SM_ERR_ALARM,
4557 &bar0->sm_err_reg,
4558 &sw_stat->sm_err_cnt))
4559 goto reset;
4560 }
4561
4562 val64 = readq(&bar0->mac_int_status);
4563 if (val64 & MAC_INT_STATUS_TMAC_INT) {
4564 if (do_s2io_chk_alarm_bit(TMAC_TX_BUF_OVRN | TMAC_TX_SM_ERR,
4565 &bar0->mac_tmac_err_reg,
4566 &sw_stat->mac_tmac_err_cnt))
4567 goto reset;
4568 do_s2io_chk_alarm_bit(TMAC_ECC_SG_ERR | TMAC_ECC_DB_ERR |
4569 TMAC_DESC_ECC_SG_ERR |
4570 TMAC_DESC_ECC_DB_ERR,
4571 &bar0->mac_tmac_err_reg,
4572 &sw_stat->mac_tmac_err_cnt);
4573 }
4574
4575 val64 = readq(&bar0->xgxs_int_status);
4576 if (val64 & XGXS_INT_STATUS_TXGXS) {
4577 if (do_s2io_chk_alarm_bit(TXGXS_ESTORE_UFLOW | TXGXS_TX_SM_ERR,
4578 &bar0->xgxs_txgxs_err_reg,
4579 &sw_stat->xgxs_txgxs_err_cnt))
4580 goto reset;
4581 do_s2io_chk_alarm_bit(TXGXS_ECC_SG_ERR | TXGXS_ECC_DB_ERR,
4582 &bar0->xgxs_txgxs_err_reg,
4583 &sw_stat->xgxs_txgxs_err_cnt);
4584 }
4585
4586 val64 = readq(&bar0->rxdma_int_status);
4587 if (val64 & RXDMA_INT_RC_INT_M) {
4588 if (do_s2io_chk_alarm_bit(RC_PRCn_ECC_DB_ERR |
4589 RC_FTC_ECC_DB_ERR |
4590 RC_PRCn_SM_ERR_ALARM |
4591 RC_FTC_SM_ERR_ALARM,
4592 &bar0->rc_err_reg,
4593 &sw_stat->rc_err_cnt))
4594 goto reset;
4595 do_s2io_chk_alarm_bit(RC_PRCn_ECC_SG_ERR |
4596 RC_FTC_ECC_SG_ERR |
4597 RC_RDA_FAIL_WR_Rn, &bar0->rc_err_reg,
4598 &sw_stat->rc_err_cnt);
4599 if (do_s2io_chk_alarm_bit(PRC_PCI_AB_RD_Rn |
4600 PRC_PCI_AB_WR_Rn |
4601 PRC_PCI_AB_F_WR_Rn,
4602 &bar0->prc_pcix_err_reg,
4603 &sw_stat->prc_pcix_err_cnt))
4604 goto reset;
4605 do_s2io_chk_alarm_bit(PRC_PCI_DP_RD_Rn |
4606 PRC_PCI_DP_WR_Rn |
4607 PRC_PCI_DP_F_WR_Rn,
4608 &bar0->prc_pcix_err_reg,
4609 &sw_stat->prc_pcix_err_cnt);
4610 }
4611
4612 if (val64 & RXDMA_INT_RPA_INT_M) {
4613 if (do_s2io_chk_alarm_bit(RPA_SM_ERR_ALARM | RPA_CREDIT_ERR,
4614 &bar0->rpa_err_reg,
4615 &sw_stat->rpa_err_cnt))
4616 goto reset;
4617 do_s2io_chk_alarm_bit(RPA_ECC_SG_ERR | RPA_ECC_DB_ERR,
4618 &bar0->rpa_err_reg,
4619 &sw_stat->rpa_err_cnt);
4620 }
4621
4622 if (val64 & RXDMA_INT_RDA_INT_M) {
4623 if (do_s2io_chk_alarm_bit(RDA_RXDn_ECC_DB_ERR |
4624 RDA_FRM_ECC_DB_N_AERR |
4625 RDA_SM1_ERR_ALARM |
4626 RDA_SM0_ERR_ALARM |
4627 RDA_RXD_ECC_DB_SERR,
4628 &bar0->rda_err_reg,
4629 &sw_stat->rda_err_cnt))
4630 goto reset;
4631 do_s2io_chk_alarm_bit(RDA_RXDn_ECC_SG_ERR |
4632 RDA_FRM_ECC_SG_ERR |
4633 RDA_MISC_ERR |
4634 RDA_PCIX_ERR,
4635 &bar0->rda_err_reg,
4636 &sw_stat->rda_err_cnt);
4637 }
4638
4639 if (val64 & RXDMA_INT_RTI_INT_M) {
4640 if (do_s2io_chk_alarm_bit(RTI_SM_ERR_ALARM,
4641 &bar0->rti_err_reg,
4642 &sw_stat->rti_err_cnt))
4643 goto reset;
4644 do_s2io_chk_alarm_bit(RTI_ECC_SG_ERR | RTI_ECC_DB_ERR,
4645 &bar0->rti_err_reg,
4646 &sw_stat->rti_err_cnt);
4647 }
4648
4649 val64 = readq(&bar0->mac_int_status);
4650 if (val64 & MAC_INT_STATUS_RMAC_INT) {
4651 if (do_s2io_chk_alarm_bit(RMAC_RX_BUFF_OVRN | RMAC_RX_SM_ERR,
4652 &bar0->mac_rmac_err_reg,
4653 &sw_stat->mac_rmac_err_cnt))
4654 goto reset;
4655 do_s2io_chk_alarm_bit(RMAC_UNUSED_INT |
4656 RMAC_SINGLE_ECC_ERR |
4657 RMAC_DOUBLE_ECC_ERR,
4658 &bar0->mac_rmac_err_reg,
4659 &sw_stat->mac_rmac_err_cnt);
4660 }
4661
4662 val64 = readq(&bar0->xgxs_int_status);
4663 if (val64 & XGXS_INT_STATUS_RXGXS) {
4664 if (do_s2io_chk_alarm_bit(RXGXS_ESTORE_OFLOW | RXGXS_RX_SM_ERR,
4665 &bar0->xgxs_rxgxs_err_reg,
4666 &sw_stat->xgxs_rxgxs_err_cnt))
4667 goto reset;
4668 }
4669
4670 val64 = readq(&bar0->mc_int_status);
4671 if (val64 & MC_INT_STATUS_MC_INT) {
4672 if (do_s2io_chk_alarm_bit(MC_ERR_REG_SM_ERR,
4673 &bar0->mc_err_reg,
4674 &sw_stat->mc_err_cnt))
4675 goto reset;
4676
4677 /* Handling Ecc errors */
4678 if (val64 & (MC_ERR_REG_ECC_ALL_SNG | MC_ERR_REG_ECC_ALL_DBL)) {
4679 writeq(val64, &bar0->mc_err_reg);
4680 if (val64 & MC_ERR_REG_ECC_ALL_DBL) {
4681 sw_stat->double_ecc_errs++;
4682 if (sp->device_type != XFRAME_II_DEVICE) {
4683 /*
4684 * Reset XframeI only if critical error
4685 */
4686 if (val64 &
4687 (MC_ERR_REG_MIRI_ECC_DB_ERR_0 |
4688 MC_ERR_REG_MIRI_ECC_DB_ERR_1))
4689 goto reset;
4690 }
4691 } else
4692 sw_stat->single_ecc_errs++;
4693 }
4694 }
4695 return;
4696
4697 reset:
4698 s2io_stop_all_tx_queue(sp);
4699 schedule_work(&sp->rst_timer_task);
4700 sw_stat->soft_reset_cnt++;
4701 }
4702
4703 /**
4704 * s2io_isr - ISR handler of the device .
4705 * @irq: the irq of the device.
4706 * @dev_id: a void pointer to the dev structure of the NIC.
4707 * Description: This function is the ISR handler of the device. It
4708 * identifies the reason for the interrupt and calls the relevant
4709 * service routines. As a contongency measure, this ISR allocates the
4710 * recv buffers, if their numbers are below the panic value which is
4711 * presently set to 25% of the original number of rcv buffers allocated.
4712 * Return value:
4713 * IRQ_HANDLED: will be returned if IRQ was handled by this routine
4714 * IRQ_NONE: will be returned if interrupt is not from our device
4715 */
s2io_isr(int irq,void * dev_id)4716 static irqreturn_t s2io_isr(int irq, void *dev_id)
4717 {
4718 struct net_device *dev = (struct net_device *)dev_id;
4719 struct s2io_nic *sp = netdev_priv(dev);
4720 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4721 int i;
4722 u64 reason = 0;
4723 struct mac_info *mac_control;
4724 struct config_param *config;
4725
4726 /* Pretend we handled any irq's from a disconnected card */
4727 if (pci_channel_offline(sp->pdev))
4728 return IRQ_NONE;
4729
4730 if (!is_s2io_card_up(sp))
4731 return IRQ_NONE;
4732
4733 config = &sp->config;
4734 mac_control = &sp->mac_control;
4735
4736 /*
4737 * Identify the cause for interrupt and call the appropriate
4738 * interrupt handler. Causes for the interrupt could be;
4739 * 1. Rx of packet.
4740 * 2. Tx complete.
4741 * 3. Link down.
4742 */
4743 reason = readq(&bar0->general_int_status);
4744
4745 if (unlikely(reason == S2IO_MINUS_ONE))
4746 return IRQ_HANDLED; /* Nothing much can be done. Get out */
4747
4748 if (reason &
4749 (GEN_INTR_RXTRAFFIC | GEN_INTR_TXTRAFFIC | GEN_INTR_TXPIC)) {
4750 writeq(S2IO_MINUS_ONE, &bar0->general_int_mask);
4751
4752 if (config->napi) {
4753 if (reason & GEN_INTR_RXTRAFFIC) {
4754 napi_schedule(&sp->napi);
4755 writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_mask);
4756 writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
4757 readl(&bar0->rx_traffic_int);
4758 }
4759 } else {
4760 /*
4761 * rx_traffic_int reg is an R1 register, writing all 1's
4762 * will ensure that the actual interrupt causing bit
4763 * get's cleared and hence a read can be avoided.
4764 */
4765 if (reason & GEN_INTR_RXTRAFFIC)
4766 writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
4767
4768 for (i = 0; i < config->rx_ring_num; i++) {
4769 struct ring_info *ring = &mac_control->rings[i];
4770
4771 rx_intr_handler(ring, 0);
4772 }
4773 }
4774
4775 /*
4776 * tx_traffic_int reg is an R1 register, writing all 1's
4777 * will ensure that the actual interrupt causing bit get's
4778 * cleared and hence a read can be avoided.
4779 */
4780 if (reason & GEN_INTR_TXTRAFFIC)
4781 writeq(S2IO_MINUS_ONE, &bar0->tx_traffic_int);
4782
4783 for (i = 0; i < config->tx_fifo_num; i++)
4784 tx_intr_handler(&mac_control->fifos[i]);
4785
4786 if (reason & GEN_INTR_TXPIC)
4787 s2io_txpic_intr_handle(sp);
4788
4789 /*
4790 * Reallocate the buffers from the interrupt handler itself.
4791 */
4792 if (!config->napi) {
4793 for (i = 0; i < config->rx_ring_num; i++) {
4794 struct ring_info *ring = &mac_control->rings[i];
4795
4796 s2io_chk_rx_buffers(sp, ring);
4797 }
4798 }
4799 writeq(sp->general_int_mask, &bar0->general_int_mask);
4800 readl(&bar0->general_int_status);
4801
4802 return IRQ_HANDLED;
4803
4804 } else if (!reason) {
4805 /* The interrupt was not raised by us */
4806 return IRQ_NONE;
4807 }
4808
4809 return IRQ_HANDLED;
4810 }
4811
4812 /**
4813 * s2io_updt_stats -
4814 */
s2io_updt_stats(struct s2io_nic * sp)4815 static void s2io_updt_stats(struct s2io_nic *sp)
4816 {
4817 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4818 u64 val64;
4819 int cnt = 0;
4820
4821 if (is_s2io_card_up(sp)) {
4822 /* Apprx 30us on a 133 MHz bus */
4823 val64 = SET_UPDT_CLICKS(10) |
4824 STAT_CFG_ONE_SHOT_EN | STAT_CFG_STAT_EN;
4825 writeq(val64, &bar0->stat_cfg);
4826 do {
4827 udelay(100);
4828 val64 = readq(&bar0->stat_cfg);
4829 if (!(val64 & s2BIT(0)))
4830 break;
4831 cnt++;
4832 if (cnt == 5)
4833 break; /* Updt failed */
4834 } while (1);
4835 }
4836 }
4837
4838 /**
4839 * s2io_get_stats - Updates the device statistics structure.
4840 * @dev : pointer to the device structure.
4841 * Description:
4842 * This function updates the device statistics structure in the s2io_nic
4843 * structure and returns a pointer to the same.
4844 * Return value:
4845 * pointer to the updated net_device_stats structure.
4846 */
s2io_get_stats(struct net_device * dev)4847 static struct net_device_stats *s2io_get_stats(struct net_device *dev)
4848 {
4849 struct s2io_nic *sp = netdev_priv(dev);
4850 struct mac_info *mac_control = &sp->mac_control;
4851 struct stat_block *stats = mac_control->stats_info;
4852 u64 delta;
4853
4854 /* Configure Stats for immediate updt */
4855 s2io_updt_stats(sp);
4856
4857 /* A device reset will cause the on-adapter statistics to be zero'ed.
4858 * This can be done while running by changing the MTU. To prevent the
4859 * system from having the stats zero'ed, the driver keeps a copy of the
4860 * last update to the system (which is also zero'ed on reset). This
4861 * enables the driver to accurately know the delta between the last
4862 * update and the current update.
4863 */
4864 delta = ((u64) le32_to_cpu(stats->rmac_vld_frms_oflow) << 32 |
4865 le32_to_cpu(stats->rmac_vld_frms)) - sp->stats.rx_packets;
4866 sp->stats.rx_packets += delta;
4867 dev->stats.rx_packets += delta;
4868
4869 delta = ((u64) le32_to_cpu(stats->tmac_frms_oflow) << 32 |
4870 le32_to_cpu(stats->tmac_frms)) - sp->stats.tx_packets;
4871 sp->stats.tx_packets += delta;
4872 dev->stats.tx_packets += delta;
4873
4874 delta = ((u64) le32_to_cpu(stats->rmac_data_octets_oflow) << 32 |
4875 le32_to_cpu(stats->rmac_data_octets)) - sp->stats.rx_bytes;
4876 sp->stats.rx_bytes += delta;
4877 dev->stats.rx_bytes += delta;
4878
4879 delta = ((u64) le32_to_cpu(stats->tmac_data_octets_oflow) << 32 |
4880 le32_to_cpu(stats->tmac_data_octets)) - sp->stats.tx_bytes;
4881 sp->stats.tx_bytes += delta;
4882 dev->stats.tx_bytes += delta;
4883
4884 delta = le64_to_cpu(stats->rmac_drop_frms) - sp->stats.rx_errors;
4885 sp->stats.rx_errors += delta;
4886 dev->stats.rx_errors += delta;
4887
4888 delta = ((u64) le32_to_cpu(stats->tmac_any_err_frms_oflow) << 32 |
4889 le32_to_cpu(stats->tmac_any_err_frms)) - sp->stats.tx_errors;
4890 sp->stats.tx_errors += delta;
4891 dev->stats.tx_errors += delta;
4892
4893 delta = le64_to_cpu(stats->rmac_drop_frms) - sp->stats.rx_dropped;
4894 sp->stats.rx_dropped += delta;
4895 dev->stats.rx_dropped += delta;
4896
4897 delta = le64_to_cpu(stats->tmac_drop_frms) - sp->stats.tx_dropped;
4898 sp->stats.tx_dropped += delta;
4899 dev->stats.tx_dropped += delta;
4900
4901 /* The adapter MAC interprets pause frames as multicast packets, but
4902 * does not pass them up. This erroneously increases the multicast
4903 * packet count and needs to be deducted when the multicast frame count
4904 * is queried.
4905 */
4906 delta = (u64) le32_to_cpu(stats->rmac_vld_mcst_frms_oflow) << 32 |
4907 le32_to_cpu(stats->rmac_vld_mcst_frms);
4908 delta -= le64_to_cpu(stats->rmac_pause_ctrl_frms);
4909 delta -= sp->stats.multicast;
4910 sp->stats.multicast += delta;
4911 dev->stats.multicast += delta;
4912
4913 delta = ((u64) le32_to_cpu(stats->rmac_usized_frms_oflow) << 32 |
4914 le32_to_cpu(stats->rmac_usized_frms)) +
4915 le64_to_cpu(stats->rmac_long_frms) - sp->stats.rx_length_errors;
4916 sp->stats.rx_length_errors += delta;
4917 dev->stats.rx_length_errors += delta;
4918
4919 delta = le64_to_cpu(stats->rmac_fcs_err_frms) - sp->stats.rx_crc_errors;
4920 sp->stats.rx_crc_errors += delta;
4921 dev->stats.rx_crc_errors += delta;
4922
4923 return &dev->stats;
4924 }
4925
4926 /**
4927 * s2io_set_multicast - entry point for multicast address enable/disable.
4928 * @dev : pointer to the device structure
4929 * Description:
4930 * This function is a driver entry point which gets called by the kernel
4931 * whenever multicast addresses must be enabled/disabled. This also gets
4932 * called to set/reset promiscuous mode. Depending on the deivce flag, we
4933 * determine, if multicast address must be enabled or if promiscuous mode
4934 * is to be disabled etc.
4935 * Return value:
4936 * void.
4937 */
4938
s2io_set_multicast(struct net_device * dev)4939 static void s2io_set_multicast(struct net_device *dev)
4940 {
4941 int i, j, prev_cnt;
4942 struct netdev_hw_addr *ha;
4943 struct s2io_nic *sp = netdev_priv(dev);
4944 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4945 u64 val64 = 0, multi_mac = 0x010203040506ULL, mask =
4946 0xfeffffffffffULL;
4947 u64 dis_addr = S2IO_DISABLE_MAC_ENTRY, mac_addr = 0;
4948 void __iomem *add;
4949 struct config_param *config = &sp->config;
4950
4951 if ((dev->flags & IFF_ALLMULTI) && (!sp->m_cast_flg)) {
4952 /* Enable all Multicast addresses */
4953 writeq(RMAC_ADDR_DATA0_MEM_ADDR(multi_mac),
4954 &bar0->rmac_addr_data0_mem);
4955 writeq(RMAC_ADDR_DATA1_MEM_MASK(mask),
4956 &bar0->rmac_addr_data1_mem);
4957 val64 = RMAC_ADDR_CMD_MEM_WE |
4958 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4959 RMAC_ADDR_CMD_MEM_OFFSET(config->max_mc_addr - 1);
4960 writeq(val64, &bar0->rmac_addr_cmd_mem);
4961 /* Wait till command completes */
4962 wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
4963 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
4964 S2IO_BIT_RESET);
4965
4966 sp->m_cast_flg = 1;
4967 sp->all_multi_pos = config->max_mc_addr - 1;
4968 } else if ((dev->flags & IFF_ALLMULTI) && (sp->m_cast_flg)) {
4969 /* Disable all Multicast addresses */
4970 writeq(RMAC_ADDR_DATA0_MEM_ADDR(dis_addr),
4971 &bar0->rmac_addr_data0_mem);
4972 writeq(RMAC_ADDR_DATA1_MEM_MASK(0x0),
4973 &bar0->rmac_addr_data1_mem);
4974 val64 = RMAC_ADDR_CMD_MEM_WE |
4975 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4976 RMAC_ADDR_CMD_MEM_OFFSET(sp->all_multi_pos);
4977 writeq(val64, &bar0->rmac_addr_cmd_mem);
4978 /* Wait till command completes */
4979 wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
4980 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
4981 S2IO_BIT_RESET);
4982
4983 sp->m_cast_flg = 0;
4984 sp->all_multi_pos = 0;
4985 }
4986
4987 if ((dev->flags & IFF_PROMISC) && (!sp->promisc_flg)) {
4988 /* Put the NIC into promiscuous mode */
4989 add = &bar0->mac_cfg;
4990 val64 = readq(&bar0->mac_cfg);
4991 val64 |= MAC_CFG_RMAC_PROM_ENABLE;
4992
4993 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4994 writel((u32)val64, add);
4995 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4996 writel((u32) (val64 >> 32), (add + 4));
4997
4998 if (vlan_tag_strip != 1) {
4999 val64 = readq(&bar0->rx_pa_cfg);
5000 val64 &= ~RX_PA_CFG_STRIP_VLAN_TAG;
5001 writeq(val64, &bar0->rx_pa_cfg);
5002 sp->vlan_strip_flag = 0;
5003 }
5004
5005 val64 = readq(&bar0->mac_cfg);
5006 sp->promisc_flg = 1;
5007 DBG_PRINT(INFO_DBG, "%s: entered promiscuous mode\n",
5008 dev->name);
5009 } else if (!(dev->flags & IFF_PROMISC) && (sp->promisc_flg)) {
5010 /* Remove the NIC from promiscuous mode */
5011 add = &bar0->mac_cfg;
5012 val64 = readq(&bar0->mac_cfg);
5013 val64 &= ~MAC_CFG_RMAC_PROM_ENABLE;
5014
5015 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
5016 writel((u32)val64, add);
5017 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
5018 writel((u32) (val64 >> 32), (add + 4));
5019
5020 if (vlan_tag_strip != 0) {
5021 val64 = readq(&bar0->rx_pa_cfg);
5022 val64 |= RX_PA_CFG_STRIP_VLAN_TAG;
5023 writeq(val64, &bar0->rx_pa_cfg);
5024 sp->vlan_strip_flag = 1;
5025 }
5026
5027 val64 = readq(&bar0->mac_cfg);
5028 sp->promisc_flg = 0;
5029 DBG_PRINT(INFO_DBG, "%s: left promiscuous mode\n", dev->name);
5030 }
5031
5032 /* Update individual M_CAST address list */
5033 if ((!sp->m_cast_flg) && netdev_mc_count(dev)) {
5034 if (netdev_mc_count(dev) >
5035 (config->max_mc_addr - config->max_mac_addr)) {
5036 DBG_PRINT(ERR_DBG,
5037 "%s: No more Rx filters can be added - "
5038 "please enable ALL_MULTI instead\n",
5039 dev->name);
5040 return;
5041 }
5042
5043 prev_cnt = sp->mc_addr_count;
5044 sp->mc_addr_count = netdev_mc_count(dev);
5045
5046 /* Clear out the previous list of Mc in the H/W. */
5047 for (i = 0; i < prev_cnt; i++) {
5048 writeq(RMAC_ADDR_DATA0_MEM_ADDR(dis_addr),
5049 &bar0->rmac_addr_data0_mem);
5050 writeq(RMAC_ADDR_DATA1_MEM_MASK(0ULL),
5051 &bar0->rmac_addr_data1_mem);
5052 val64 = RMAC_ADDR_CMD_MEM_WE |
5053 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
5054 RMAC_ADDR_CMD_MEM_OFFSET
5055 (config->mc_start_offset + i);
5056 writeq(val64, &bar0->rmac_addr_cmd_mem);
5057
5058 /* Wait for command completes */
5059 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
5060 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
5061 S2IO_BIT_RESET)) {
5062 DBG_PRINT(ERR_DBG,
5063 "%s: Adding Multicasts failed\n",
5064 dev->name);
5065 return;
5066 }
5067 }
5068
5069 /* Create the new Rx filter list and update the same in H/W. */
5070 i = 0;
5071 netdev_for_each_mc_addr(ha, dev) {
5072 mac_addr = 0;
5073 for (j = 0; j < ETH_ALEN; j++) {
5074 mac_addr |= ha->addr[j];
5075 mac_addr <<= 8;
5076 }
5077 mac_addr >>= 8;
5078 writeq(RMAC_ADDR_DATA0_MEM_ADDR(mac_addr),
5079 &bar0->rmac_addr_data0_mem);
5080 writeq(RMAC_ADDR_DATA1_MEM_MASK(0ULL),
5081 &bar0->rmac_addr_data1_mem);
5082 val64 = RMAC_ADDR_CMD_MEM_WE |
5083 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
5084 RMAC_ADDR_CMD_MEM_OFFSET
5085 (i + config->mc_start_offset);
5086 writeq(val64, &bar0->rmac_addr_cmd_mem);
5087
5088 /* Wait for command completes */
5089 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
5090 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
5091 S2IO_BIT_RESET)) {
5092 DBG_PRINT(ERR_DBG,
5093 "%s: Adding Multicasts failed\n",
5094 dev->name);
5095 return;
5096 }
5097 i++;
5098 }
5099 }
5100 }
5101
5102 /* read from CAM unicast & multicast addresses and store it in
5103 * def_mac_addr structure
5104 */
do_s2io_store_unicast_mc(struct s2io_nic * sp)5105 static void do_s2io_store_unicast_mc(struct s2io_nic *sp)
5106 {
5107 int offset;
5108 u64 mac_addr = 0x0;
5109 struct config_param *config = &sp->config;
5110
5111 /* store unicast & multicast mac addresses */
5112 for (offset = 0; offset < config->max_mc_addr; offset++) {
5113 mac_addr = do_s2io_read_unicast_mc(sp, offset);
5114 /* if read fails disable the entry */
5115 if (mac_addr == FAILURE)
5116 mac_addr = S2IO_DISABLE_MAC_ENTRY;
5117 do_s2io_copy_mac_addr(sp, offset, mac_addr);
5118 }
5119 }
5120
5121 /* restore unicast & multicast MAC to CAM from def_mac_addr structure */
do_s2io_restore_unicast_mc(struct s2io_nic * sp)5122 static void do_s2io_restore_unicast_mc(struct s2io_nic *sp)
5123 {
5124 int offset;
5125 struct config_param *config = &sp->config;
5126 /* restore unicast mac address */
5127 for (offset = 0; offset < config->max_mac_addr; offset++)
5128 do_s2io_prog_unicast(sp->dev,
5129 sp->def_mac_addr[offset].mac_addr);
5130
5131 /* restore multicast mac address */
5132 for (offset = config->mc_start_offset;
5133 offset < config->max_mc_addr; offset++)
5134 do_s2io_add_mc(sp, sp->def_mac_addr[offset].mac_addr);
5135 }
5136
5137 /* add a multicast MAC address to CAM */
do_s2io_add_mc(struct s2io_nic * sp,u8 * addr)5138 static int do_s2io_add_mc(struct s2io_nic *sp, u8 *addr)
5139 {
5140 int i;
5141 u64 mac_addr = 0;
5142 struct config_param *config = &sp->config;
5143
5144 for (i = 0; i < ETH_ALEN; i++) {
5145 mac_addr <<= 8;
5146 mac_addr |= addr[i];
5147 }
5148 if ((0ULL == mac_addr) || (mac_addr == S2IO_DISABLE_MAC_ENTRY))
5149 return SUCCESS;
5150
5151 /* check if the multicast mac already preset in CAM */
5152 for (i = config->mc_start_offset; i < config->max_mc_addr; i++) {
5153 u64 tmp64;
5154 tmp64 = do_s2io_read_unicast_mc(sp, i);
5155 if (tmp64 == S2IO_DISABLE_MAC_ENTRY) /* CAM entry is empty */
5156 break;
5157
5158 if (tmp64 == mac_addr)
5159 return SUCCESS;
5160 }
5161 if (i == config->max_mc_addr) {
5162 DBG_PRINT(ERR_DBG,
5163 "CAM full no space left for multicast MAC\n");
5164 return FAILURE;
5165 }
5166 /* Update the internal structure with this new mac address */
5167 do_s2io_copy_mac_addr(sp, i, mac_addr);
5168
5169 return do_s2io_add_mac(sp, mac_addr, i);
5170 }
5171
5172 /* add MAC address to CAM */
do_s2io_add_mac(struct s2io_nic * sp,u64 addr,int off)5173 static int do_s2io_add_mac(struct s2io_nic *sp, u64 addr, int off)
5174 {
5175 u64 val64;
5176 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5177
5178 writeq(RMAC_ADDR_DATA0_MEM_ADDR(addr),
5179 &bar0->rmac_addr_data0_mem);
5180
5181 val64 = RMAC_ADDR_CMD_MEM_WE | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
5182 RMAC_ADDR_CMD_MEM_OFFSET(off);
5183 writeq(val64, &bar0->rmac_addr_cmd_mem);
5184
5185 /* Wait till command completes */
5186 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
5187 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
5188 S2IO_BIT_RESET)) {
5189 DBG_PRINT(INFO_DBG, "do_s2io_add_mac failed\n");
5190 return FAILURE;
5191 }
5192 return SUCCESS;
5193 }
5194 /* deletes a specified unicast/multicast mac entry from CAM */
do_s2io_delete_unicast_mc(struct s2io_nic * sp,u64 addr)5195 static int do_s2io_delete_unicast_mc(struct s2io_nic *sp, u64 addr)
5196 {
5197 int offset;
5198 u64 dis_addr = S2IO_DISABLE_MAC_ENTRY, tmp64;
5199 struct config_param *config = &sp->config;
5200
5201 for (offset = 1;
5202 offset < config->max_mc_addr; offset++) {
5203 tmp64 = do_s2io_read_unicast_mc(sp, offset);
5204 if (tmp64 == addr) {
5205 /* disable the entry by writing 0xffffffffffffULL */
5206 if (do_s2io_add_mac(sp, dis_addr, offset) == FAILURE)
5207 return FAILURE;
5208 /* store the new mac list from CAM */
5209 do_s2io_store_unicast_mc(sp);
5210 return SUCCESS;
5211 }
5212 }
5213 DBG_PRINT(ERR_DBG, "MAC address 0x%llx not found in CAM\n",
5214 (unsigned long long)addr);
5215 return FAILURE;
5216 }
5217
5218 /* read mac entries from CAM */
do_s2io_read_unicast_mc(struct s2io_nic * sp,int offset)5219 static u64 do_s2io_read_unicast_mc(struct s2io_nic *sp, int offset)
5220 {
5221 u64 tmp64 = 0xffffffffffff0000ULL, val64;
5222 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5223
5224 /* read mac addr */
5225 val64 = RMAC_ADDR_CMD_MEM_RD | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
5226 RMAC_ADDR_CMD_MEM_OFFSET(offset);
5227 writeq(val64, &bar0->rmac_addr_cmd_mem);
5228
5229 /* Wait till command completes */
5230 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
5231 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
5232 S2IO_BIT_RESET)) {
5233 DBG_PRINT(INFO_DBG, "do_s2io_read_unicast_mc failed\n");
5234 return FAILURE;
5235 }
5236 tmp64 = readq(&bar0->rmac_addr_data0_mem);
5237
5238 return tmp64 >> 16;
5239 }
5240
5241 /**
5242 * s2io_set_mac_addr driver entry point
5243 */
5244
s2io_set_mac_addr(struct net_device * dev,void * p)5245 static int s2io_set_mac_addr(struct net_device *dev, void *p)
5246 {
5247 struct sockaddr *addr = p;
5248
5249 if (!is_valid_ether_addr(addr->sa_data))
5250 return -EADDRNOTAVAIL;
5251
5252 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
5253
5254 /* store the MAC address in CAM */
5255 return do_s2io_prog_unicast(dev, dev->dev_addr);
5256 }
5257 /**
5258 * do_s2io_prog_unicast - Programs the Xframe mac address
5259 * @dev : pointer to the device structure.
5260 * @addr: a uchar pointer to the new mac address which is to be set.
5261 * Description : This procedure will program the Xframe to receive
5262 * frames with new Mac Address
5263 * Return value: SUCCESS on success and an appropriate (-)ve integer
5264 * as defined in errno.h file on failure.
5265 */
5266
do_s2io_prog_unicast(struct net_device * dev,u8 * addr)5267 static int do_s2io_prog_unicast(struct net_device *dev, u8 *addr)
5268 {
5269 struct s2io_nic *sp = netdev_priv(dev);
5270 register u64 mac_addr = 0, perm_addr = 0;
5271 int i;
5272 u64 tmp64;
5273 struct config_param *config = &sp->config;
5274
5275 /*
5276 * Set the new MAC address as the new unicast filter and reflect this
5277 * change on the device address registered with the OS. It will be
5278 * at offset 0.
5279 */
5280 for (i = 0; i < ETH_ALEN; i++) {
5281 mac_addr <<= 8;
5282 mac_addr |= addr[i];
5283 perm_addr <<= 8;
5284 perm_addr |= sp->def_mac_addr[0].mac_addr[i];
5285 }
5286
5287 /* check if the dev_addr is different than perm_addr */
5288 if (mac_addr == perm_addr)
5289 return SUCCESS;
5290
5291 /* check if the mac already preset in CAM */
5292 for (i = 1; i < config->max_mac_addr; i++) {
5293 tmp64 = do_s2io_read_unicast_mc(sp, i);
5294 if (tmp64 == S2IO_DISABLE_MAC_ENTRY) /* CAM entry is empty */
5295 break;
5296
5297 if (tmp64 == mac_addr) {
5298 DBG_PRINT(INFO_DBG,
5299 "MAC addr:0x%llx already present in CAM\n",
5300 (unsigned long long)mac_addr);
5301 return SUCCESS;
5302 }
5303 }
5304 if (i == config->max_mac_addr) {
5305 DBG_PRINT(ERR_DBG, "CAM full no space left for Unicast MAC\n");
5306 return FAILURE;
5307 }
5308 /* Update the internal structure with this new mac address */
5309 do_s2io_copy_mac_addr(sp, i, mac_addr);
5310
5311 return do_s2io_add_mac(sp, mac_addr, i);
5312 }
5313
5314 /**
5315 * s2io_ethtool_sset - Sets different link parameters.
5316 * @sp : private member of the device structure, which is a pointer to the * s2io_nic structure.
5317 * @info: pointer to the structure with parameters given by ethtool to set
5318 * link information.
5319 * Description:
5320 * The function sets different link parameters provided by the user onto
5321 * the NIC.
5322 * Return value:
5323 * 0 on success.
5324 */
5325
s2io_ethtool_sset(struct net_device * dev,struct ethtool_cmd * info)5326 static int s2io_ethtool_sset(struct net_device *dev,
5327 struct ethtool_cmd *info)
5328 {
5329 struct s2io_nic *sp = netdev_priv(dev);
5330 if ((info->autoneg == AUTONEG_ENABLE) ||
5331 (ethtool_cmd_speed(info) != SPEED_10000) ||
5332 (info->duplex != DUPLEX_FULL))
5333 return -EINVAL;
5334 else {
5335 s2io_close(sp->dev);
5336 s2io_open(sp->dev);
5337 }
5338
5339 return 0;
5340 }
5341
5342 /**
5343 * s2io_ethtol_gset - Return link specific information.
5344 * @sp : private member of the device structure, pointer to the
5345 * s2io_nic structure.
5346 * @info : pointer to the structure with parameters given by ethtool
5347 * to return link information.
5348 * Description:
5349 * Returns link specific information like speed, duplex etc.. to ethtool.
5350 * Return value :
5351 * return 0 on success.
5352 */
5353
s2io_ethtool_gset(struct net_device * dev,struct ethtool_cmd * info)5354 static int s2io_ethtool_gset(struct net_device *dev, struct ethtool_cmd *info)
5355 {
5356 struct s2io_nic *sp = netdev_priv(dev);
5357 info->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
5358 info->advertising = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
5359 info->port = PORT_FIBRE;
5360
5361 /* info->transceiver */
5362 info->transceiver = XCVR_EXTERNAL;
5363
5364 if (netif_carrier_ok(sp->dev)) {
5365 ethtool_cmd_speed_set(info, SPEED_10000);
5366 info->duplex = DUPLEX_FULL;
5367 } else {
5368 ethtool_cmd_speed_set(info, -1);
5369 info->duplex = -1;
5370 }
5371
5372 info->autoneg = AUTONEG_DISABLE;
5373 return 0;
5374 }
5375
5376 /**
5377 * s2io_ethtool_gdrvinfo - Returns driver specific information.
5378 * @sp : private member of the device structure, which is a pointer to the
5379 * s2io_nic structure.
5380 * @info : pointer to the structure with parameters given by ethtool to
5381 * return driver information.
5382 * Description:
5383 * Returns driver specefic information like name, version etc.. to ethtool.
5384 * Return value:
5385 * void
5386 */
5387
s2io_ethtool_gdrvinfo(struct net_device * dev,struct ethtool_drvinfo * info)5388 static void s2io_ethtool_gdrvinfo(struct net_device *dev,
5389 struct ethtool_drvinfo *info)
5390 {
5391 struct s2io_nic *sp = netdev_priv(dev);
5392
5393 strlcpy(info->driver, s2io_driver_name, sizeof(info->driver));
5394 strlcpy(info->version, s2io_driver_version, sizeof(info->version));
5395 strlcpy(info->bus_info, pci_name(sp->pdev), sizeof(info->bus_info));
5396 info->regdump_len = XENA_REG_SPACE;
5397 info->eedump_len = XENA_EEPROM_SPACE;
5398 }
5399
5400 /**
5401 * s2io_ethtool_gregs - dumps the entire space of Xfame into the buffer.
5402 * @sp: private member of the device structure, which is a pointer to the
5403 * s2io_nic structure.
5404 * @regs : pointer to the structure with parameters given by ethtool for
5405 * dumping the registers.
5406 * @reg_space: The input argumnet into which all the registers are dumped.
5407 * Description:
5408 * Dumps the entire register space of xFrame NIC into the user given
5409 * buffer area.
5410 * Return value :
5411 * void .
5412 */
5413
s2io_ethtool_gregs(struct net_device * dev,struct ethtool_regs * regs,void * space)5414 static void s2io_ethtool_gregs(struct net_device *dev,
5415 struct ethtool_regs *regs, void *space)
5416 {
5417 int i;
5418 u64 reg;
5419 u8 *reg_space = (u8 *)space;
5420 struct s2io_nic *sp = netdev_priv(dev);
5421
5422 regs->len = XENA_REG_SPACE;
5423 regs->version = sp->pdev->subsystem_device;
5424
5425 for (i = 0; i < regs->len; i += 8) {
5426 reg = readq(sp->bar0 + i);
5427 memcpy((reg_space + i), ®, 8);
5428 }
5429 }
5430
5431 /*
5432 * s2io_set_led - control NIC led
5433 */
s2io_set_led(struct s2io_nic * sp,bool on)5434 static void s2io_set_led(struct s2io_nic *sp, bool on)
5435 {
5436 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5437 u16 subid = sp->pdev->subsystem_device;
5438 u64 val64;
5439
5440 if ((sp->device_type == XFRAME_II_DEVICE) ||
5441 ((subid & 0xFF) >= 0x07)) {
5442 val64 = readq(&bar0->gpio_control);
5443 if (on)
5444 val64 |= GPIO_CTRL_GPIO_0;
5445 else
5446 val64 &= ~GPIO_CTRL_GPIO_0;
5447
5448 writeq(val64, &bar0->gpio_control);
5449 } else {
5450 val64 = readq(&bar0->adapter_control);
5451 if (on)
5452 val64 |= ADAPTER_LED_ON;
5453 else
5454 val64 &= ~ADAPTER_LED_ON;
5455
5456 writeq(val64, &bar0->adapter_control);
5457 }
5458
5459 }
5460
5461 /**
5462 * s2io_ethtool_set_led - To physically identify the nic on the system.
5463 * @dev : network device
5464 * @state: led setting
5465 *
5466 * Description: Used to physically identify the NIC on the system.
5467 * The Link LED will blink for a time specified by the user for
5468 * identification.
5469 * NOTE: The Link has to be Up to be able to blink the LED. Hence
5470 * identification is possible only if it's link is up.
5471 */
5472
s2io_ethtool_set_led(struct net_device * dev,enum ethtool_phys_id_state state)5473 static int s2io_ethtool_set_led(struct net_device *dev,
5474 enum ethtool_phys_id_state state)
5475 {
5476 struct s2io_nic *sp = netdev_priv(dev);
5477 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5478 u16 subid = sp->pdev->subsystem_device;
5479
5480 if ((sp->device_type == XFRAME_I_DEVICE) && ((subid & 0xFF) < 0x07)) {
5481 u64 val64 = readq(&bar0->adapter_control);
5482 if (!(val64 & ADAPTER_CNTL_EN)) {
5483 pr_err("Adapter Link down, cannot blink LED\n");
5484 return -EAGAIN;
5485 }
5486 }
5487
5488 switch (state) {
5489 case ETHTOOL_ID_ACTIVE:
5490 sp->adapt_ctrl_org = readq(&bar0->gpio_control);
5491 return 1; /* cycle on/off once per second */
5492
5493 case ETHTOOL_ID_ON:
5494 s2io_set_led(sp, true);
5495 break;
5496
5497 case ETHTOOL_ID_OFF:
5498 s2io_set_led(sp, false);
5499 break;
5500
5501 case ETHTOOL_ID_INACTIVE:
5502 if (CARDS_WITH_FAULTY_LINK_INDICATORS(sp->device_type, subid))
5503 writeq(sp->adapt_ctrl_org, &bar0->gpio_control);
5504 }
5505
5506 return 0;
5507 }
5508
s2io_ethtool_gringparam(struct net_device * dev,struct ethtool_ringparam * ering)5509 static void s2io_ethtool_gringparam(struct net_device *dev,
5510 struct ethtool_ringparam *ering)
5511 {
5512 struct s2io_nic *sp = netdev_priv(dev);
5513 int i, tx_desc_count = 0, rx_desc_count = 0;
5514
5515 if (sp->rxd_mode == RXD_MODE_1) {
5516 ering->rx_max_pending = MAX_RX_DESC_1;
5517 ering->rx_jumbo_max_pending = MAX_RX_DESC_1;
5518 } else {
5519 ering->rx_max_pending = MAX_RX_DESC_2;
5520 ering->rx_jumbo_max_pending = MAX_RX_DESC_2;
5521 }
5522
5523 ering->tx_max_pending = MAX_TX_DESC;
5524
5525 for (i = 0; i < sp->config.rx_ring_num; i++)
5526 rx_desc_count += sp->config.rx_cfg[i].num_rxd;
5527 ering->rx_pending = rx_desc_count;
5528 ering->rx_jumbo_pending = rx_desc_count;
5529
5530 for (i = 0; i < sp->config.tx_fifo_num; i++)
5531 tx_desc_count += sp->config.tx_cfg[i].fifo_len;
5532 ering->tx_pending = tx_desc_count;
5533 DBG_PRINT(INFO_DBG, "max txds: %d\n", sp->config.max_txds);
5534 }
5535
5536 /**
5537 * s2io_ethtool_getpause_data -Pause frame frame generation and reception.
5538 * @sp : private member of the device structure, which is a pointer to the
5539 * s2io_nic structure.
5540 * @ep : pointer to the structure with pause parameters given by ethtool.
5541 * Description:
5542 * Returns the Pause frame generation and reception capability of the NIC.
5543 * Return value:
5544 * void
5545 */
s2io_ethtool_getpause_data(struct net_device * dev,struct ethtool_pauseparam * ep)5546 static void s2io_ethtool_getpause_data(struct net_device *dev,
5547 struct ethtool_pauseparam *ep)
5548 {
5549 u64 val64;
5550 struct s2io_nic *sp = netdev_priv(dev);
5551 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5552
5553 val64 = readq(&bar0->rmac_pause_cfg);
5554 if (val64 & RMAC_PAUSE_GEN_ENABLE)
5555 ep->tx_pause = true;
5556 if (val64 & RMAC_PAUSE_RX_ENABLE)
5557 ep->rx_pause = true;
5558 ep->autoneg = false;
5559 }
5560
5561 /**
5562 * s2io_ethtool_setpause_data - set/reset pause frame generation.
5563 * @sp : private member of the device structure, which is a pointer to the
5564 * s2io_nic structure.
5565 * @ep : pointer to the structure with pause parameters given by ethtool.
5566 * Description:
5567 * It can be used to set or reset Pause frame generation or reception
5568 * support of the NIC.
5569 * Return value:
5570 * int, returns 0 on Success
5571 */
5572
s2io_ethtool_setpause_data(struct net_device * dev,struct ethtool_pauseparam * ep)5573 static int s2io_ethtool_setpause_data(struct net_device *dev,
5574 struct ethtool_pauseparam *ep)
5575 {
5576 u64 val64;
5577 struct s2io_nic *sp = netdev_priv(dev);
5578 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5579
5580 val64 = readq(&bar0->rmac_pause_cfg);
5581 if (ep->tx_pause)
5582 val64 |= RMAC_PAUSE_GEN_ENABLE;
5583 else
5584 val64 &= ~RMAC_PAUSE_GEN_ENABLE;
5585 if (ep->rx_pause)
5586 val64 |= RMAC_PAUSE_RX_ENABLE;
5587 else
5588 val64 &= ~RMAC_PAUSE_RX_ENABLE;
5589 writeq(val64, &bar0->rmac_pause_cfg);
5590 return 0;
5591 }
5592
5593 /**
5594 * read_eeprom - reads 4 bytes of data from user given offset.
5595 * @sp : private member of the device structure, which is a pointer to the
5596 * s2io_nic structure.
5597 * @off : offset at which the data must be written
5598 * @data : Its an output parameter where the data read at the given
5599 * offset is stored.
5600 * Description:
5601 * Will read 4 bytes of data from the user given offset and return the
5602 * read data.
5603 * NOTE: Will allow to read only part of the EEPROM visible through the
5604 * I2C bus.
5605 * Return value:
5606 * -1 on failure and 0 on success.
5607 */
5608
5609 #define S2IO_DEV_ID 5
read_eeprom(struct s2io_nic * sp,int off,u64 * data)5610 static int read_eeprom(struct s2io_nic *sp, int off, u64 *data)
5611 {
5612 int ret = -1;
5613 u32 exit_cnt = 0;
5614 u64 val64;
5615 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5616
5617 if (sp->device_type == XFRAME_I_DEVICE) {
5618 val64 = I2C_CONTROL_DEV_ID(S2IO_DEV_ID) |
5619 I2C_CONTROL_ADDR(off) |
5620 I2C_CONTROL_BYTE_CNT(0x3) |
5621 I2C_CONTROL_READ |
5622 I2C_CONTROL_CNTL_START;
5623 SPECIAL_REG_WRITE(val64, &bar0->i2c_control, LF);
5624
5625 while (exit_cnt < 5) {
5626 val64 = readq(&bar0->i2c_control);
5627 if (I2C_CONTROL_CNTL_END(val64)) {
5628 *data = I2C_CONTROL_GET_DATA(val64);
5629 ret = 0;
5630 break;
5631 }
5632 msleep(50);
5633 exit_cnt++;
5634 }
5635 }
5636
5637 if (sp->device_type == XFRAME_II_DEVICE) {
5638 val64 = SPI_CONTROL_KEY(0x9) | SPI_CONTROL_SEL1 |
5639 SPI_CONTROL_BYTECNT(0x3) |
5640 SPI_CONTROL_CMD(0x3) | SPI_CONTROL_ADDR(off);
5641 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5642 val64 |= SPI_CONTROL_REQ;
5643 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5644 while (exit_cnt < 5) {
5645 val64 = readq(&bar0->spi_control);
5646 if (val64 & SPI_CONTROL_NACK) {
5647 ret = 1;
5648 break;
5649 } else if (val64 & SPI_CONTROL_DONE) {
5650 *data = readq(&bar0->spi_data);
5651 *data &= 0xffffff;
5652 ret = 0;
5653 break;
5654 }
5655 msleep(50);
5656 exit_cnt++;
5657 }
5658 }
5659 return ret;
5660 }
5661
5662 /**
5663 * write_eeprom - actually writes the relevant part of the data value.
5664 * @sp : private member of the device structure, which is a pointer to the
5665 * s2io_nic structure.
5666 * @off : offset at which the data must be written
5667 * @data : The data that is to be written
5668 * @cnt : Number of bytes of the data that are actually to be written into
5669 * the Eeprom. (max of 3)
5670 * Description:
5671 * Actually writes the relevant part of the data value into the Eeprom
5672 * through the I2C bus.
5673 * Return value:
5674 * 0 on success, -1 on failure.
5675 */
5676
write_eeprom(struct s2io_nic * sp,int off,u64 data,int cnt)5677 static int write_eeprom(struct s2io_nic *sp, int off, u64 data, int cnt)
5678 {
5679 int exit_cnt = 0, ret = -1;
5680 u64 val64;
5681 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5682
5683 if (sp->device_type == XFRAME_I_DEVICE) {
5684 val64 = I2C_CONTROL_DEV_ID(S2IO_DEV_ID) |
5685 I2C_CONTROL_ADDR(off) |
5686 I2C_CONTROL_BYTE_CNT(cnt) |
5687 I2C_CONTROL_SET_DATA((u32)data) |
5688 I2C_CONTROL_CNTL_START;
5689 SPECIAL_REG_WRITE(val64, &bar0->i2c_control, LF);
5690
5691 while (exit_cnt < 5) {
5692 val64 = readq(&bar0->i2c_control);
5693 if (I2C_CONTROL_CNTL_END(val64)) {
5694 if (!(val64 & I2C_CONTROL_NACK))
5695 ret = 0;
5696 break;
5697 }
5698 msleep(50);
5699 exit_cnt++;
5700 }
5701 }
5702
5703 if (sp->device_type == XFRAME_II_DEVICE) {
5704 int write_cnt = (cnt == 8) ? 0 : cnt;
5705 writeq(SPI_DATA_WRITE(data, (cnt << 3)), &bar0->spi_data);
5706
5707 val64 = SPI_CONTROL_KEY(0x9) | SPI_CONTROL_SEL1 |
5708 SPI_CONTROL_BYTECNT(write_cnt) |
5709 SPI_CONTROL_CMD(0x2) | SPI_CONTROL_ADDR(off);
5710 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5711 val64 |= SPI_CONTROL_REQ;
5712 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5713 while (exit_cnt < 5) {
5714 val64 = readq(&bar0->spi_control);
5715 if (val64 & SPI_CONTROL_NACK) {
5716 ret = 1;
5717 break;
5718 } else if (val64 & SPI_CONTROL_DONE) {
5719 ret = 0;
5720 break;
5721 }
5722 msleep(50);
5723 exit_cnt++;
5724 }
5725 }
5726 return ret;
5727 }
s2io_vpd_read(struct s2io_nic * nic)5728 static void s2io_vpd_read(struct s2io_nic *nic)
5729 {
5730 u8 *vpd_data;
5731 u8 data;
5732 int i = 0, cnt, len, fail = 0;
5733 int vpd_addr = 0x80;
5734 struct swStat *swstats = &nic->mac_control.stats_info->sw_stat;
5735
5736 if (nic->device_type == XFRAME_II_DEVICE) {
5737 strcpy(nic->product_name, "Xframe II 10GbE network adapter");
5738 vpd_addr = 0x80;
5739 } else {
5740 strcpy(nic->product_name, "Xframe I 10GbE network adapter");
5741 vpd_addr = 0x50;
5742 }
5743 strcpy(nic->serial_num, "NOT AVAILABLE");
5744
5745 vpd_data = kmalloc(256, GFP_KERNEL);
5746 if (!vpd_data) {
5747 swstats->mem_alloc_fail_cnt++;
5748 return;
5749 }
5750 swstats->mem_allocated += 256;
5751
5752 for (i = 0; i < 256; i += 4) {
5753 pci_write_config_byte(nic->pdev, (vpd_addr + 2), i);
5754 pci_read_config_byte(nic->pdev, (vpd_addr + 2), &data);
5755 pci_write_config_byte(nic->pdev, (vpd_addr + 3), 0);
5756 for (cnt = 0; cnt < 5; cnt++) {
5757 msleep(2);
5758 pci_read_config_byte(nic->pdev, (vpd_addr + 3), &data);
5759 if (data == 0x80)
5760 break;
5761 }
5762 if (cnt >= 5) {
5763 DBG_PRINT(ERR_DBG, "Read of VPD data failed\n");
5764 fail = 1;
5765 break;
5766 }
5767 pci_read_config_dword(nic->pdev, (vpd_addr + 4),
5768 (u32 *)&vpd_data[i]);
5769 }
5770
5771 if (!fail) {
5772 /* read serial number of adapter */
5773 for (cnt = 0; cnt < 252; cnt++) {
5774 if ((vpd_data[cnt] == 'S') &&
5775 (vpd_data[cnt+1] == 'N')) {
5776 len = vpd_data[cnt+2];
5777 if (len < min(VPD_STRING_LEN, 256-cnt-2)) {
5778 memcpy(nic->serial_num,
5779 &vpd_data[cnt + 3],
5780 len);
5781 memset(nic->serial_num+len,
5782 0,
5783 VPD_STRING_LEN-len);
5784 break;
5785 }
5786 }
5787 }
5788 }
5789
5790 if ((!fail) && (vpd_data[1] < VPD_STRING_LEN)) {
5791 len = vpd_data[1];
5792 memcpy(nic->product_name, &vpd_data[3], len);
5793 nic->product_name[len] = 0;
5794 }
5795 kfree(vpd_data);
5796 swstats->mem_freed += 256;
5797 }
5798
5799 /**
5800 * s2io_ethtool_geeprom - reads the value stored in the Eeprom.
5801 * @sp : private member of the device structure, which is a pointer to the * s2io_nic structure.
5802 * @eeprom : pointer to the user level structure provided by ethtool,
5803 * containing all relevant information.
5804 * @data_buf : user defined value to be written into Eeprom.
5805 * Description: Reads the values stored in the Eeprom at given offset
5806 * for a given length. Stores these values int the input argument data
5807 * buffer 'data_buf' and returns these to the caller (ethtool.)
5808 * Return value:
5809 * int 0 on success
5810 */
5811
s2io_ethtool_geeprom(struct net_device * dev,struct ethtool_eeprom * eeprom,u8 * data_buf)5812 static int s2io_ethtool_geeprom(struct net_device *dev,
5813 struct ethtool_eeprom *eeprom, u8 * data_buf)
5814 {
5815 u32 i, valid;
5816 u64 data;
5817 struct s2io_nic *sp = netdev_priv(dev);
5818
5819 eeprom->magic = sp->pdev->vendor | (sp->pdev->device << 16);
5820
5821 if ((eeprom->offset + eeprom->len) > (XENA_EEPROM_SPACE))
5822 eeprom->len = XENA_EEPROM_SPACE - eeprom->offset;
5823
5824 for (i = 0; i < eeprom->len; i += 4) {
5825 if (read_eeprom(sp, (eeprom->offset + i), &data)) {
5826 DBG_PRINT(ERR_DBG, "Read of EEPROM failed\n");
5827 return -EFAULT;
5828 }
5829 valid = INV(data);
5830 memcpy((data_buf + i), &valid, 4);
5831 }
5832 return 0;
5833 }
5834
5835 /**
5836 * s2io_ethtool_seeprom - tries to write the user provided value in Eeprom
5837 * @sp : private member of the device structure, which is a pointer to the
5838 * s2io_nic structure.
5839 * @eeprom : pointer to the user level structure provided by ethtool,
5840 * containing all relevant information.
5841 * @data_buf ; user defined value to be written into Eeprom.
5842 * Description:
5843 * Tries to write the user provided value in the Eeprom, at the offset
5844 * given by the user.
5845 * Return value:
5846 * 0 on success, -EFAULT on failure.
5847 */
5848
s2io_ethtool_seeprom(struct net_device * dev,struct ethtool_eeprom * eeprom,u8 * data_buf)5849 static int s2io_ethtool_seeprom(struct net_device *dev,
5850 struct ethtool_eeprom *eeprom,
5851 u8 *data_buf)
5852 {
5853 int len = eeprom->len, cnt = 0;
5854 u64 valid = 0, data;
5855 struct s2io_nic *sp = netdev_priv(dev);
5856
5857 if (eeprom->magic != (sp->pdev->vendor | (sp->pdev->device << 16))) {
5858 DBG_PRINT(ERR_DBG,
5859 "ETHTOOL_WRITE_EEPROM Err: "
5860 "Magic value is wrong, it is 0x%x should be 0x%x\n",
5861 (sp->pdev->vendor | (sp->pdev->device << 16)),
5862 eeprom->magic);
5863 return -EFAULT;
5864 }
5865
5866 while (len) {
5867 data = (u32)data_buf[cnt] & 0x000000FF;
5868 if (data)
5869 valid = (u32)(data << 24);
5870 else
5871 valid = data;
5872
5873 if (write_eeprom(sp, (eeprom->offset + cnt), valid, 0)) {
5874 DBG_PRINT(ERR_DBG,
5875 "ETHTOOL_WRITE_EEPROM Err: "
5876 "Cannot write into the specified offset\n");
5877 return -EFAULT;
5878 }
5879 cnt++;
5880 len--;
5881 }
5882
5883 return 0;
5884 }
5885
5886 /**
5887 * s2io_register_test - reads and writes into all clock domains.
5888 * @sp : private member of the device structure, which is a pointer to the
5889 * s2io_nic structure.
5890 * @data : variable that returns the result of each of the test conducted b
5891 * by the driver.
5892 * Description:
5893 * Read and write into all clock domains. The NIC has 3 clock domains,
5894 * see that registers in all the three regions are accessible.
5895 * Return value:
5896 * 0 on success.
5897 */
5898
s2io_register_test(struct s2io_nic * sp,uint64_t * data)5899 static int s2io_register_test(struct s2io_nic *sp, uint64_t *data)
5900 {
5901 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5902 u64 val64 = 0, exp_val;
5903 int fail = 0;
5904
5905 val64 = readq(&bar0->pif_rd_swapper_fb);
5906 if (val64 != 0x123456789abcdefULL) {
5907 fail = 1;
5908 DBG_PRINT(INFO_DBG, "Read Test level %d fails\n", 1);
5909 }
5910
5911 val64 = readq(&bar0->rmac_pause_cfg);
5912 if (val64 != 0xc000ffff00000000ULL) {
5913 fail = 1;
5914 DBG_PRINT(INFO_DBG, "Read Test level %d fails\n", 2);
5915 }
5916
5917 val64 = readq(&bar0->rx_queue_cfg);
5918 if (sp->device_type == XFRAME_II_DEVICE)
5919 exp_val = 0x0404040404040404ULL;
5920 else
5921 exp_val = 0x0808080808080808ULL;
5922 if (val64 != exp_val) {
5923 fail = 1;
5924 DBG_PRINT(INFO_DBG, "Read Test level %d fails\n", 3);
5925 }
5926
5927 val64 = readq(&bar0->xgxs_efifo_cfg);
5928 if (val64 != 0x000000001923141EULL) {
5929 fail = 1;
5930 DBG_PRINT(INFO_DBG, "Read Test level %d fails\n", 4);
5931 }
5932
5933 val64 = 0x5A5A5A5A5A5A5A5AULL;
5934 writeq(val64, &bar0->xmsi_data);
5935 val64 = readq(&bar0->xmsi_data);
5936 if (val64 != 0x5A5A5A5A5A5A5A5AULL) {
5937 fail = 1;
5938 DBG_PRINT(ERR_DBG, "Write Test level %d fails\n", 1);
5939 }
5940
5941 val64 = 0xA5A5A5A5A5A5A5A5ULL;
5942 writeq(val64, &bar0->xmsi_data);
5943 val64 = readq(&bar0->xmsi_data);
5944 if (val64 != 0xA5A5A5A5A5A5A5A5ULL) {
5945 fail = 1;
5946 DBG_PRINT(ERR_DBG, "Write Test level %d fails\n", 2);
5947 }
5948
5949 *data = fail;
5950 return fail;
5951 }
5952
5953 /**
5954 * s2io_eeprom_test - to verify that EEprom in the xena can be programmed.
5955 * @sp : private member of the device structure, which is a pointer to the
5956 * s2io_nic structure.
5957 * @data:variable that returns the result of each of the test conducted by
5958 * the driver.
5959 * Description:
5960 * Verify that EEPROM in the xena can be programmed using I2C_CONTROL
5961 * register.
5962 * Return value:
5963 * 0 on success.
5964 */
5965
s2io_eeprom_test(struct s2io_nic * sp,uint64_t * data)5966 static int s2io_eeprom_test(struct s2io_nic *sp, uint64_t *data)
5967 {
5968 int fail = 0;
5969 u64 ret_data, org_4F0, org_7F0;
5970 u8 saved_4F0 = 0, saved_7F0 = 0;
5971 struct net_device *dev = sp->dev;
5972
5973 /* Test Write Error at offset 0 */
5974 /* Note that SPI interface allows write access to all areas
5975 * of EEPROM. Hence doing all negative testing only for Xframe I.
5976 */
5977 if (sp->device_type == XFRAME_I_DEVICE)
5978 if (!write_eeprom(sp, 0, 0, 3))
5979 fail = 1;
5980
5981 /* Save current values at offsets 0x4F0 and 0x7F0 */
5982 if (!read_eeprom(sp, 0x4F0, &org_4F0))
5983 saved_4F0 = 1;
5984 if (!read_eeprom(sp, 0x7F0, &org_7F0))
5985 saved_7F0 = 1;
5986
5987 /* Test Write at offset 4f0 */
5988 if (write_eeprom(sp, 0x4F0, 0x012345, 3))
5989 fail = 1;
5990 if (read_eeprom(sp, 0x4F0, &ret_data))
5991 fail = 1;
5992
5993 if (ret_data != 0x012345) {
5994 DBG_PRINT(ERR_DBG, "%s: eeprom test error at offset 0x4F0. "
5995 "Data written %llx Data read %llx\n",
5996 dev->name, (unsigned long long)0x12345,
5997 (unsigned long long)ret_data);
5998 fail = 1;
5999 }
6000
6001 /* Reset the EEPROM data go FFFF */
6002 write_eeprom(sp, 0x4F0, 0xFFFFFF, 3);
6003
6004 /* Test Write Request Error at offset 0x7c */
6005 if (sp->device_type == XFRAME_I_DEVICE)
6006 if (!write_eeprom(sp, 0x07C, 0, 3))
6007 fail = 1;
6008
6009 /* Test Write Request at offset 0x7f0 */
6010 if (write_eeprom(sp, 0x7F0, 0x012345, 3))
6011 fail = 1;
6012 if (read_eeprom(sp, 0x7F0, &ret_data))
6013 fail = 1;
6014
6015 if (ret_data != 0x012345) {
6016 DBG_PRINT(ERR_DBG, "%s: eeprom test error at offset 0x7F0. "
6017 "Data written %llx Data read %llx\n",
6018 dev->name, (unsigned long long)0x12345,
6019 (unsigned long long)ret_data);
6020 fail = 1;
6021 }
6022
6023 /* Reset the EEPROM data go FFFF */
6024 write_eeprom(sp, 0x7F0, 0xFFFFFF, 3);
6025
6026 if (sp->device_type == XFRAME_I_DEVICE) {
6027 /* Test Write Error at offset 0x80 */
6028 if (!write_eeprom(sp, 0x080, 0, 3))
6029 fail = 1;
6030
6031 /* Test Write Error at offset 0xfc */
6032 if (!write_eeprom(sp, 0x0FC, 0, 3))
6033 fail = 1;
6034
6035 /* Test Write Error at offset 0x100 */
6036 if (!write_eeprom(sp, 0x100, 0, 3))
6037 fail = 1;
6038
6039 /* Test Write Error at offset 4ec */
6040 if (!write_eeprom(sp, 0x4EC, 0, 3))
6041 fail = 1;
6042 }
6043
6044 /* Restore values at offsets 0x4F0 and 0x7F0 */
6045 if (saved_4F0)
6046 write_eeprom(sp, 0x4F0, org_4F0, 3);
6047 if (saved_7F0)
6048 write_eeprom(sp, 0x7F0, org_7F0, 3);
6049
6050 *data = fail;
6051 return fail;
6052 }
6053
6054 /**
6055 * s2io_bist_test - invokes the MemBist test of the card .
6056 * @sp : private member of the device structure, which is a pointer to the
6057 * s2io_nic structure.
6058 * @data:variable that returns the result of each of the test conducted by
6059 * the driver.
6060 * Description:
6061 * This invokes the MemBist test of the card. We give around
6062 * 2 secs time for the Test to complete. If it's still not complete
6063 * within this peiod, we consider that the test failed.
6064 * Return value:
6065 * 0 on success and -1 on failure.
6066 */
6067
s2io_bist_test(struct s2io_nic * sp,uint64_t * data)6068 static int s2io_bist_test(struct s2io_nic *sp, uint64_t *data)
6069 {
6070 u8 bist = 0;
6071 int cnt = 0, ret = -1;
6072
6073 pci_read_config_byte(sp->pdev, PCI_BIST, &bist);
6074 bist |= PCI_BIST_START;
6075 pci_write_config_word(sp->pdev, PCI_BIST, bist);
6076
6077 while (cnt < 20) {
6078 pci_read_config_byte(sp->pdev, PCI_BIST, &bist);
6079 if (!(bist & PCI_BIST_START)) {
6080 *data = (bist & PCI_BIST_CODE_MASK);
6081 ret = 0;
6082 break;
6083 }
6084 msleep(100);
6085 cnt++;
6086 }
6087
6088 return ret;
6089 }
6090
6091 /**
6092 * s2io-link_test - verifies the link state of the nic
6093 * @sp ; private member of the device structure, which is a pointer to the
6094 * s2io_nic structure.
6095 * @data: variable that returns the result of each of the test conducted by
6096 * the driver.
6097 * Description:
6098 * The function verifies the link state of the NIC and updates the input
6099 * argument 'data' appropriately.
6100 * Return value:
6101 * 0 on success.
6102 */
6103
s2io_link_test(struct s2io_nic * sp,uint64_t * data)6104 static int s2io_link_test(struct s2io_nic *sp, uint64_t *data)
6105 {
6106 struct XENA_dev_config __iomem *bar0 = sp->bar0;
6107 u64 val64;
6108
6109 val64 = readq(&bar0->adapter_status);
6110 if (!(LINK_IS_UP(val64)))
6111 *data = 1;
6112 else
6113 *data = 0;
6114
6115 return *data;
6116 }
6117
6118 /**
6119 * s2io_rldram_test - offline test for access to the RldRam chip on the NIC
6120 * @sp - private member of the device structure, which is a pointer to the
6121 * s2io_nic structure.
6122 * @data - variable that returns the result of each of the test
6123 * conducted by the driver.
6124 * Description:
6125 * This is one of the offline test that tests the read and write
6126 * access to the RldRam chip on the NIC.
6127 * Return value:
6128 * 0 on success.
6129 */
6130
s2io_rldram_test(struct s2io_nic * sp,uint64_t * data)6131 static int s2io_rldram_test(struct s2io_nic *sp, uint64_t *data)
6132 {
6133 struct XENA_dev_config __iomem *bar0 = sp->bar0;
6134 u64 val64;
6135 int cnt, iteration = 0, test_fail = 0;
6136
6137 val64 = readq(&bar0->adapter_control);
6138 val64 &= ~ADAPTER_ECC_EN;
6139 writeq(val64, &bar0->adapter_control);
6140
6141 val64 = readq(&bar0->mc_rldram_test_ctrl);
6142 val64 |= MC_RLDRAM_TEST_MODE;
6143 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_test_ctrl, LF);
6144
6145 val64 = readq(&bar0->mc_rldram_mrs);
6146 val64 |= MC_RLDRAM_QUEUE_SIZE_ENABLE;
6147 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF);
6148
6149 val64 |= MC_RLDRAM_MRS_ENABLE;
6150 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF);
6151
6152 while (iteration < 2) {
6153 val64 = 0x55555555aaaa0000ULL;
6154 if (iteration == 1)
6155 val64 ^= 0xFFFFFFFFFFFF0000ULL;
6156 writeq(val64, &bar0->mc_rldram_test_d0);
6157
6158 val64 = 0xaaaa5a5555550000ULL;
6159 if (iteration == 1)
6160 val64 ^= 0xFFFFFFFFFFFF0000ULL;
6161 writeq(val64, &bar0->mc_rldram_test_d1);
6162
6163 val64 = 0x55aaaaaaaa5a0000ULL;
6164 if (iteration == 1)
6165 val64 ^= 0xFFFFFFFFFFFF0000ULL;
6166 writeq(val64, &bar0->mc_rldram_test_d2);
6167
6168 val64 = (u64) (0x0000003ffffe0100ULL);
6169 writeq(val64, &bar0->mc_rldram_test_add);
6170
6171 val64 = MC_RLDRAM_TEST_MODE |
6172 MC_RLDRAM_TEST_WRITE |
6173 MC_RLDRAM_TEST_GO;
6174 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_test_ctrl, LF);
6175
6176 for (cnt = 0; cnt < 5; cnt++) {
6177 val64 = readq(&bar0->mc_rldram_test_ctrl);
6178 if (val64 & MC_RLDRAM_TEST_DONE)
6179 break;
6180 msleep(200);
6181 }
6182
6183 if (cnt == 5)
6184 break;
6185
6186 val64 = MC_RLDRAM_TEST_MODE | MC_RLDRAM_TEST_GO;
6187 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_test_ctrl, LF);
6188
6189 for (cnt = 0; cnt < 5; cnt++) {
6190 val64 = readq(&bar0->mc_rldram_test_ctrl);
6191 if (val64 & MC_RLDRAM_TEST_DONE)
6192 break;
6193 msleep(500);
6194 }
6195
6196 if (cnt == 5)
6197 break;
6198
6199 val64 = readq(&bar0->mc_rldram_test_ctrl);
6200 if (!(val64 & MC_RLDRAM_TEST_PASS))
6201 test_fail = 1;
6202
6203 iteration++;
6204 }
6205
6206 *data = test_fail;
6207
6208 /* Bring the adapter out of test mode */
6209 SPECIAL_REG_WRITE(0, &bar0->mc_rldram_test_ctrl, LF);
6210
6211 return test_fail;
6212 }
6213
6214 /**
6215 * s2io_ethtool_test - conducts 6 tsets to determine the health of card.
6216 * @sp : private member of the device structure, which is a pointer to the
6217 * s2io_nic structure.
6218 * @ethtest : pointer to a ethtool command specific structure that will be
6219 * returned to the user.
6220 * @data : variable that returns the result of each of the test
6221 * conducted by the driver.
6222 * Description:
6223 * This function conducts 6 tests ( 4 offline and 2 online) to determine
6224 * the health of the card.
6225 * Return value:
6226 * void
6227 */
6228
s2io_ethtool_test(struct net_device * dev,struct ethtool_test * ethtest,uint64_t * data)6229 static void s2io_ethtool_test(struct net_device *dev,
6230 struct ethtool_test *ethtest,
6231 uint64_t *data)
6232 {
6233 struct s2io_nic *sp = netdev_priv(dev);
6234 int orig_state = netif_running(sp->dev);
6235
6236 if (ethtest->flags == ETH_TEST_FL_OFFLINE) {
6237 /* Offline Tests. */
6238 if (orig_state)
6239 s2io_close(sp->dev);
6240
6241 if (s2io_register_test(sp, &data[0]))
6242 ethtest->flags |= ETH_TEST_FL_FAILED;
6243
6244 s2io_reset(sp);
6245
6246 if (s2io_rldram_test(sp, &data[3]))
6247 ethtest->flags |= ETH_TEST_FL_FAILED;
6248
6249 s2io_reset(sp);
6250
6251 if (s2io_eeprom_test(sp, &data[1]))
6252 ethtest->flags |= ETH_TEST_FL_FAILED;
6253
6254 if (s2io_bist_test(sp, &data[4]))
6255 ethtest->flags |= ETH_TEST_FL_FAILED;
6256
6257 if (orig_state)
6258 s2io_open(sp->dev);
6259
6260 data[2] = 0;
6261 } else {
6262 /* Online Tests. */
6263 if (!orig_state) {
6264 DBG_PRINT(ERR_DBG, "%s: is not up, cannot run test\n",
6265 dev->name);
6266 data[0] = -1;
6267 data[1] = -1;
6268 data[2] = -1;
6269 data[3] = -1;
6270 data[4] = -1;
6271 }
6272
6273 if (s2io_link_test(sp, &data[2]))
6274 ethtest->flags |= ETH_TEST_FL_FAILED;
6275
6276 data[0] = 0;
6277 data[1] = 0;
6278 data[3] = 0;
6279 data[4] = 0;
6280 }
6281 }
6282
s2io_get_ethtool_stats(struct net_device * dev,struct ethtool_stats * estats,u64 * tmp_stats)6283 static void s2io_get_ethtool_stats(struct net_device *dev,
6284 struct ethtool_stats *estats,
6285 u64 *tmp_stats)
6286 {
6287 int i = 0, k;
6288 struct s2io_nic *sp = netdev_priv(dev);
6289 struct stat_block *stats = sp->mac_control.stats_info;
6290 struct swStat *swstats = &stats->sw_stat;
6291 struct xpakStat *xstats = &stats->xpak_stat;
6292
6293 s2io_updt_stats(sp);
6294 tmp_stats[i++] =
6295 (u64)le32_to_cpu(stats->tmac_frms_oflow) << 32 |
6296 le32_to_cpu(stats->tmac_frms);
6297 tmp_stats[i++] =
6298 (u64)le32_to_cpu(stats->tmac_data_octets_oflow) << 32 |
6299 le32_to_cpu(stats->tmac_data_octets);
6300 tmp_stats[i++] = le64_to_cpu(stats->tmac_drop_frms);
6301 tmp_stats[i++] =
6302 (u64)le32_to_cpu(stats->tmac_mcst_frms_oflow) << 32 |
6303 le32_to_cpu(stats->tmac_mcst_frms);
6304 tmp_stats[i++] =
6305 (u64)le32_to_cpu(stats->tmac_bcst_frms_oflow) << 32 |
6306 le32_to_cpu(stats->tmac_bcst_frms);
6307 tmp_stats[i++] = le64_to_cpu(stats->tmac_pause_ctrl_frms);
6308 tmp_stats[i++] =
6309 (u64)le32_to_cpu(stats->tmac_ttl_octets_oflow) << 32 |
6310 le32_to_cpu(stats->tmac_ttl_octets);
6311 tmp_stats[i++] =
6312 (u64)le32_to_cpu(stats->tmac_ucst_frms_oflow) << 32 |
6313 le32_to_cpu(stats->tmac_ucst_frms);
6314 tmp_stats[i++] =
6315 (u64)le32_to_cpu(stats->tmac_nucst_frms_oflow) << 32 |
6316 le32_to_cpu(stats->tmac_nucst_frms);
6317 tmp_stats[i++] =
6318 (u64)le32_to_cpu(stats->tmac_any_err_frms_oflow) << 32 |
6319 le32_to_cpu(stats->tmac_any_err_frms);
6320 tmp_stats[i++] = le64_to_cpu(stats->tmac_ttl_less_fb_octets);
6321 tmp_stats[i++] = le64_to_cpu(stats->tmac_vld_ip_octets);
6322 tmp_stats[i++] =
6323 (u64)le32_to_cpu(stats->tmac_vld_ip_oflow) << 32 |
6324 le32_to_cpu(stats->tmac_vld_ip);
6325 tmp_stats[i++] =
6326 (u64)le32_to_cpu(stats->tmac_drop_ip_oflow) << 32 |
6327 le32_to_cpu(stats->tmac_drop_ip);
6328 tmp_stats[i++] =
6329 (u64)le32_to_cpu(stats->tmac_icmp_oflow) << 32 |
6330 le32_to_cpu(stats->tmac_icmp);
6331 tmp_stats[i++] =
6332 (u64)le32_to_cpu(stats->tmac_rst_tcp_oflow) << 32 |
6333 le32_to_cpu(stats->tmac_rst_tcp);
6334 tmp_stats[i++] = le64_to_cpu(stats->tmac_tcp);
6335 tmp_stats[i++] = (u64)le32_to_cpu(stats->tmac_udp_oflow) << 32 |
6336 le32_to_cpu(stats->tmac_udp);
6337 tmp_stats[i++] =
6338 (u64)le32_to_cpu(stats->rmac_vld_frms_oflow) << 32 |
6339 le32_to_cpu(stats->rmac_vld_frms);
6340 tmp_stats[i++] =
6341 (u64)le32_to_cpu(stats->rmac_data_octets_oflow) << 32 |
6342 le32_to_cpu(stats->rmac_data_octets);
6343 tmp_stats[i++] = le64_to_cpu(stats->rmac_fcs_err_frms);
6344 tmp_stats[i++] = le64_to_cpu(stats->rmac_drop_frms);
6345 tmp_stats[i++] =
6346 (u64)le32_to_cpu(stats->rmac_vld_mcst_frms_oflow) << 32 |
6347 le32_to_cpu(stats->rmac_vld_mcst_frms);
6348 tmp_stats[i++] =
6349 (u64)le32_to_cpu(stats->rmac_vld_bcst_frms_oflow) << 32 |
6350 le32_to_cpu(stats->rmac_vld_bcst_frms);
6351 tmp_stats[i++] = le32_to_cpu(stats->rmac_in_rng_len_err_frms);
6352 tmp_stats[i++] = le32_to_cpu(stats->rmac_out_rng_len_err_frms);
6353 tmp_stats[i++] = le64_to_cpu(stats->rmac_long_frms);
6354 tmp_stats[i++] = le64_to_cpu(stats->rmac_pause_ctrl_frms);
6355 tmp_stats[i++] = le64_to_cpu(stats->rmac_unsup_ctrl_frms);
6356 tmp_stats[i++] =
6357 (u64)le32_to_cpu(stats->rmac_ttl_octets_oflow) << 32 |
6358 le32_to_cpu(stats->rmac_ttl_octets);
6359 tmp_stats[i++] =
6360 (u64)le32_to_cpu(stats->rmac_accepted_ucst_frms_oflow) << 32
6361 | le32_to_cpu(stats->rmac_accepted_ucst_frms);
6362 tmp_stats[i++] =
6363 (u64)le32_to_cpu(stats->rmac_accepted_nucst_frms_oflow)
6364 << 32 | le32_to_cpu(stats->rmac_accepted_nucst_frms);
6365 tmp_stats[i++] =
6366 (u64)le32_to_cpu(stats->rmac_discarded_frms_oflow) << 32 |
6367 le32_to_cpu(stats->rmac_discarded_frms);
6368 tmp_stats[i++] =
6369 (u64)le32_to_cpu(stats->rmac_drop_events_oflow)
6370 << 32 | le32_to_cpu(stats->rmac_drop_events);
6371 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_less_fb_octets);
6372 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_frms);
6373 tmp_stats[i++] =
6374 (u64)le32_to_cpu(stats->rmac_usized_frms_oflow) << 32 |
6375 le32_to_cpu(stats->rmac_usized_frms);
6376 tmp_stats[i++] =
6377 (u64)le32_to_cpu(stats->rmac_osized_frms_oflow) << 32 |
6378 le32_to_cpu(stats->rmac_osized_frms);
6379 tmp_stats[i++] =
6380 (u64)le32_to_cpu(stats->rmac_frag_frms_oflow) << 32 |
6381 le32_to_cpu(stats->rmac_frag_frms);
6382 tmp_stats[i++] =
6383 (u64)le32_to_cpu(stats->rmac_jabber_frms_oflow) << 32 |
6384 le32_to_cpu(stats->rmac_jabber_frms);
6385 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_64_frms);
6386 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_65_127_frms);
6387 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_128_255_frms);
6388 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_256_511_frms);
6389 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_512_1023_frms);
6390 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_1024_1518_frms);
6391 tmp_stats[i++] =
6392 (u64)le32_to_cpu(stats->rmac_ip_oflow) << 32 |
6393 le32_to_cpu(stats->rmac_ip);
6394 tmp_stats[i++] = le64_to_cpu(stats->rmac_ip_octets);
6395 tmp_stats[i++] = le32_to_cpu(stats->rmac_hdr_err_ip);
6396 tmp_stats[i++] =
6397 (u64)le32_to_cpu(stats->rmac_drop_ip_oflow) << 32 |
6398 le32_to_cpu(stats->rmac_drop_ip);
6399 tmp_stats[i++] =
6400 (u64)le32_to_cpu(stats->rmac_icmp_oflow) << 32 |
6401 le32_to_cpu(stats->rmac_icmp);
6402 tmp_stats[i++] = le64_to_cpu(stats->rmac_tcp);
6403 tmp_stats[i++] =
6404 (u64)le32_to_cpu(stats->rmac_udp_oflow) << 32 |
6405 le32_to_cpu(stats->rmac_udp);
6406 tmp_stats[i++] =
6407 (u64)le32_to_cpu(stats->rmac_err_drp_udp_oflow) << 32 |
6408 le32_to_cpu(stats->rmac_err_drp_udp);
6409 tmp_stats[i++] = le64_to_cpu(stats->rmac_xgmii_err_sym);
6410 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q0);
6411 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q1);
6412 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q2);
6413 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q3);
6414 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q4);
6415 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q5);
6416 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q6);
6417 tmp_stats[i++] = le64_to_cpu(stats->rmac_frms_q7);
6418 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q0);
6419 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q1);
6420 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q2);
6421 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q3);
6422 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q4);
6423 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q5);
6424 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q6);
6425 tmp_stats[i++] = le16_to_cpu(stats->rmac_full_q7);
6426 tmp_stats[i++] =
6427 (u64)le32_to_cpu(stats->rmac_pause_cnt_oflow) << 32 |
6428 le32_to_cpu(stats->rmac_pause_cnt);
6429 tmp_stats[i++] = le64_to_cpu(stats->rmac_xgmii_data_err_cnt);
6430 tmp_stats[i++] = le64_to_cpu(stats->rmac_xgmii_ctrl_err_cnt);
6431 tmp_stats[i++] =
6432 (u64)le32_to_cpu(stats->rmac_accepted_ip_oflow) << 32 |
6433 le32_to_cpu(stats->rmac_accepted_ip);
6434 tmp_stats[i++] = le32_to_cpu(stats->rmac_err_tcp);
6435 tmp_stats[i++] = le32_to_cpu(stats->rd_req_cnt);
6436 tmp_stats[i++] = le32_to_cpu(stats->new_rd_req_cnt);
6437 tmp_stats[i++] = le32_to_cpu(stats->new_rd_req_rtry_cnt);
6438 tmp_stats[i++] = le32_to_cpu(stats->rd_rtry_cnt);
6439 tmp_stats[i++] = le32_to_cpu(stats->wr_rtry_rd_ack_cnt);
6440 tmp_stats[i++] = le32_to_cpu(stats->wr_req_cnt);
6441 tmp_stats[i++] = le32_to_cpu(stats->new_wr_req_cnt);
6442 tmp_stats[i++] = le32_to_cpu(stats->new_wr_req_rtry_cnt);
6443 tmp_stats[i++] = le32_to_cpu(stats->wr_rtry_cnt);
6444 tmp_stats[i++] = le32_to_cpu(stats->wr_disc_cnt);
6445 tmp_stats[i++] = le32_to_cpu(stats->rd_rtry_wr_ack_cnt);
6446 tmp_stats[i++] = le32_to_cpu(stats->txp_wr_cnt);
6447 tmp_stats[i++] = le32_to_cpu(stats->txd_rd_cnt);
6448 tmp_stats[i++] = le32_to_cpu(stats->txd_wr_cnt);
6449 tmp_stats[i++] = le32_to_cpu(stats->rxd_rd_cnt);
6450 tmp_stats[i++] = le32_to_cpu(stats->rxd_wr_cnt);
6451 tmp_stats[i++] = le32_to_cpu(stats->txf_rd_cnt);
6452 tmp_stats[i++] = le32_to_cpu(stats->rxf_wr_cnt);
6453
6454 /* Enhanced statistics exist only for Hercules */
6455 if (sp->device_type == XFRAME_II_DEVICE) {
6456 tmp_stats[i++] =
6457 le64_to_cpu(stats->rmac_ttl_1519_4095_frms);
6458 tmp_stats[i++] =
6459 le64_to_cpu(stats->rmac_ttl_4096_8191_frms);
6460 tmp_stats[i++] =
6461 le64_to_cpu(stats->rmac_ttl_8192_max_frms);
6462 tmp_stats[i++] = le64_to_cpu(stats->rmac_ttl_gt_max_frms);
6463 tmp_stats[i++] = le64_to_cpu(stats->rmac_osized_alt_frms);
6464 tmp_stats[i++] = le64_to_cpu(stats->rmac_jabber_alt_frms);
6465 tmp_stats[i++] = le64_to_cpu(stats->rmac_gt_max_alt_frms);
6466 tmp_stats[i++] = le64_to_cpu(stats->rmac_vlan_frms);
6467 tmp_stats[i++] = le32_to_cpu(stats->rmac_len_discard);
6468 tmp_stats[i++] = le32_to_cpu(stats->rmac_fcs_discard);
6469 tmp_stats[i++] = le32_to_cpu(stats->rmac_pf_discard);
6470 tmp_stats[i++] = le32_to_cpu(stats->rmac_da_discard);
6471 tmp_stats[i++] = le32_to_cpu(stats->rmac_red_discard);
6472 tmp_stats[i++] = le32_to_cpu(stats->rmac_rts_discard);
6473 tmp_stats[i++] = le32_to_cpu(stats->rmac_ingm_full_discard);
6474 tmp_stats[i++] = le32_to_cpu(stats->link_fault_cnt);
6475 }
6476
6477 tmp_stats[i++] = 0;
6478 tmp_stats[i++] = swstats->single_ecc_errs;
6479 tmp_stats[i++] = swstats->double_ecc_errs;
6480 tmp_stats[i++] = swstats->parity_err_cnt;
6481 tmp_stats[i++] = swstats->serious_err_cnt;
6482 tmp_stats[i++] = swstats->soft_reset_cnt;
6483 tmp_stats[i++] = swstats->fifo_full_cnt;
6484 for (k = 0; k < MAX_RX_RINGS; k++)
6485 tmp_stats[i++] = swstats->ring_full_cnt[k];
6486 tmp_stats[i++] = xstats->alarm_transceiver_temp_high;
6487 tmp_stats[i++] = xstats->alarm_transceiver_temp_low;
6488 tmp_stats[i++] = xstats->alarm_laser_bias_current_high;
6489 tmp_stats[i++] = xstats->alarm_laser_bias_current_low;
6490 tmp_stats[i++] = xstats->alarm_laser_output_power_high;
6491 tmp_stats[i++] = xstats->alarm_laser_output_power_low;
6492 tmp_stats[i++] = xstats->warn_transceiver_temp_high;
6493 tmp_stats[i++] = xstats->warn_transceiver_temp_low;
6494 tmp_stats[i++] = xstats->warn_laser_bias_current_high;
6495 tmp_stats[i++] = xstats->warn_laser_bias_current_low;
6496 tmp_stats[i++] = xstats->warn_laser_output_power_high;
6497 tmp_stats[i++] = xstats->warn_laser_output_power_low;
6498 tmp_stats[i++] = swstats->clubbed_frms_cnt;
6499 tmp_stats[i++] = swstats->sending_both;
6500 tmp_stats[i++] = swstats->outof_sequence_pkts;
6501 tmp_stats[i++] = swstats->flush_max_pkts;
6502 if (swstats->num_aggregations) {
6503 u64 tmp = swstats->sum_avg_pkts_aggregated;
6504 int count = 0;
6505 /*
6506 * Since 64-bit divide does not work on all platforms,
6507 * do repeated subtraction.
6508 */
6509 while (tmp >= swstats->num_aggregations) {
6510 tmp -= swstats->num_aggregations;
6511 count++;
6512 }
6513 tmp_stats[i++] = count;
6514 } else
6515 tmp_stats[i++] = 0;
6516 tmp_stats[i++] = swstats->mem_alloc_fail_cnt;
6517 tmp_stats[i++] = swstats->pci_map_fail_cnt;
6518 tmp_stats[i++] = swstats->watchdog_timer_cnt;
6519 tmp_stats[i++] = swstats->mem_allocated;
6520 tmp_stats[i++] = swstats->mem_freed;
6521 tmp_stats[i++] = swstats->link_up_cnt;
6522 tmp_stats[i++] = swstats->link_down_cnt;
6523 tmp_stats[i++] = swstats->link_up_time;
6524 tmp_stats[i++] = swstats->link_down_time;
6525
6526 tmp_stats[i++] = swstats->tx_buf_abort_cnt;
6527 tmp_stats[i++] = swstats->tx_desc_abort_cnt;
6528 tmp_stats[i++] = swstats->tx_parity_err_cnt;
6529 tmp_stats[i++] = swstats->tx_link_loss_cnt;
6530 tmp_stats[i++] = swstats->tx_list_proc_err_cnt;
6531
6532 tmp_stats[i++] = swstats->rx_parity_err_cnt;
6533 tmp_stats[i++] = swstats->rx_abort_cnt;
6534 tmp_stats[i++] = swstats->rx_parity_abort_cnt;
6535 tmp_stats[i++] = swstats->rx_rda_fail_cnt;
6536 tmp_stats[i++] = swstats->rx_unkn_prot_cnt;
6537 tmp_stats[i++] = swstats->rx_fcs_err_cnt;
6538 tmp_stats[i++] = swstats->rx_buf_size_err_cnt;
6539 tmp_stats[i++] = swstats->rx_rxd_corrupt_cnt;
6540 tmp_stats[i++] = swstats->rx_unkn_err_cnt;
6541 tmp_stats[i++] = swstats->tda_err_cnt;
6542 tmp_stats[i++] = swstats->pfc_err_cnt;
6543 tmp_stats[i++] = swstats->pcc_err_cnt;
6544 tmp_stats[i++] = swstats->tti_err_cnt;
6545 tmp_stats[i++] = swstats->tpa_err_cnt;
6546 tmp_stats[i++] = swstats->sm_err_cnt;
6547 tmp_stats[i++] = swstats->lso_err_cnt;
6548 tmp_stats[i++] = swstats->mac_tmac_err_cnt;
6549 tmp_stats[i++] = swstats->mac_rmac_err_cnt;
6550 tmp_stats[i++] = swstats->xgxs_txgxs_err_cnt;
6551 tmp_stats[i++] = swstats->xgxs_rxgxs_err_cnt;
6552 tmp_stats[i++] = swstats->rc_err_cnt;
6553 tmp_stats[i++] = swstats->prc_pcix_err_cnt;
6554 tmp_stats[i++] = swstats->rpa_err_cnt;
6555 tmp_stats[i++] = swstats->rda_err_cnt;
6556 tmp_stats[i++] = swstats->rti_err_cnt;
6557 tmp_stats[i++] = swstats->mc_err_cnt;
6558 }
6559
s2io_ethtool_get_regs_len(struct net_device * dev)6560 static int s2io_ethtool_get_regs_len(struct net_device *dev)
6561 {
6562 return XENA_REG_SPACE;
6563 }
6564
6565
s2io_get_eeprom_len(struct net_device * dev)6566 static int s2io_get_eeprom_len(struct net_device *dev)
6567 {
6568 return XENA_EEPROM_SPACE;
6569 }
6570
s2io_get_sset_count(struct net_device * dev,int sset)6571 static int s2io_get_sset_count(struct net_device *dev, int sset)
6572 {
6573 struct s2io_nic *sp = netdev_priv(dev);
6574
6575 switch (sset) {
6576 case ETH_SS_TEST:
6577 return S2IO_TEST_LEN;
6578 case ETH_SS_STATS:
6579 switch (sp->device_type) {
6580 case XFRAME_I_DEVICE:
6581 return XFRAME_I_STAT_LEN;
6582 case XFRAME_II_DEVICE:
6583 return XFRAME_II_STAT_LEN;
6584 default:
6585 return 0;
6586 }
6587 default:
6588 return -EOPNOTSUPP;
6589 }
6590 }
6591
s2io_ethtool_get_strings(struct net_device * dev,u32 stringset,u8 * data)6592 static void s2io_ethtool_get_strings(struct net_device *dev,
6593 u32 stringset, u8 *data)
6594 {
6595 int stat_size = 0;
6596 struct s2io_nic *sp = netdev_priv(dev);
6597
6598 switch (stringset) {
6599 case ETH_SS_TEST:
6600 memcpy(data, s2io_gstrings, S2IO_STRINGS_LEN);
6601 break;
6602 case ETH_SS_STATS:
6603 stat_size = sizeof(ethtool_xena_stats_keys);
6604 memcpy(data, ðtool_xena_stats_keys, stat_size);
6605 if (sp->device_type == XFRAME_II_DEVICE) {
6606 memcpy(data + stat_size,
6607 ðtool_enhanced_stats_keys,
6608 sizeof(ethtool_enhanced_stats_keys));
6609 stat_size += sizeof(ethtool_enhanced_stats_keys);
6610 }
6611
6612 memcpy(data + stat_size, ðtool_driver_stats_keys,
6613 sizeof(ethtool_driver_stats_keys));
6614 }
6615 }
6616
s2io_set_features(struct net_device * dev,netdev_features_t features)6617 static int s2io_set_features(struct net_device *dev, netdev_features_t features)
6618 {
6619 struct s2io_nic *sp = netdev_priv(dev);
6620 netdev_features_t changed = (features ^ dev->features) & NETIF_F_LRO;
6621
6622 if (changed && netif_running(dev)) {
6623 int rc;
6624
6625 s2io_stop_all_tx_queue(sp);
6626 s2io_card_down(sp);
6627 dev->features = features;
6628 rc = s2io_card_up(sp);
6629 if (rc)
6630 s2io_reset(sp);
6631 else
6632 s2io_start_all_tx_queue(sp);
6633
6634 return rc ? rc : 1;
6635 }
6636
6637 return 0;
6638 }
6639
6640 static const struct ethtool_ops netdev_ethtool_ops = {
6641 .get_settings = s2io_ethtool_gset,
6642 .set_settings = s2io_ethtool_sset,
6643 .get_drvinfo = s2io_ethtool_gdrvinfo,
6644 .get_regs_len = s2io_ethtool_get_regs_len,
6645 .get_regs = s2io_ethtool_gregs,
6646 .get_link = ethtool_op_get_link,
6647 .get_eeprom_len = s2io_get_eeprom_len,
6648 .get_eeprom = s2io_ethtool_geeprom,
6649 .set_eeprom = s2io_ethtool_seeprom,
6650 .get_ringparam = s2io_ethtool_gringparam,
6651 .get_pauseparam = s2io_ethtool_getpause_data,
6652 .set_pauseparam = s2io_ethtool_setpause_data,
6653 .self_test = s2io_ethtool_test,
6654 .get_strings = s2io_ethtool_get_strings,
6655 .set_phys_id = s2io_ethtool_set_led,
6656 .get_ethtool_stats = s2io_get_ethtool_stats,
6657 .get_sset_count = s2io_get_sset_count,
6658 };
6659
6660 /**
6661 * s2io_ioctl - Entry point for the Ioctl
6662 * @dev : Device pointer.
6663 * @ifr : An IOCTL specefic structure, that can contain a pointer to
6664 * a proprietary structure used to pass information to the driver.
6665 * @cmd : This is used to distinguish between the different commands that
6666 * can be passed to the IOCTL functions.
6667 * Description:
6668 * Currently there are no special functionality supported in IOCTL, hence
6669 * function always return EOPNOTSUPPORTED
6670 */
6671
s2io_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)6672 static int s2io_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6673 {
6674 return -EOPNOTSUPP;
6675 }
6676
6677 /**
6678 * s2io_change_mtu - entry point to change MTU size for the device.
6679 * @dev : device pointer.
6680 * @new_mtu : the new MTU size for the device.
6681 * Description: A driver entry point to change MTU size for the device.
6682 * Before changing the MTU the device must be stopped.
6683 * Return value:
6684 * 0 on success and an appropriate (-)ve integer as defined in errno.h
6685 * file on failure.
6686 */
6687
s2io_change_mtu(struct net_device * dev,int new_mtu)6688 static int s2io_change_mtu(struct net_device *dev, int new_mtu)
6689 {
6690 struct s2io_nic *sp = netdev_priv(dev);
6691 int ret = 0;
6692
6693 if ((new_mtu < MIN_MTU) || (new_mtu > S2IO_JUMBO_SIZE)) {
6694 DBG_PRINT(ERR_DBG, "%s: MTU size is invalid.\n", dev->name);
6695 return -EPERM;
6696 }
6697
6698 dev->mtu = new_mtu;
6699 if (netif_running(dev)) {
6700 s2io_stop_all_tx_queue(sp);
6701 s2io_card_down(sp);
6702 ret = s2io_card_up(sp);
6703 if (ret) {
6704 DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n",
6705 __func__);
6706 return ret;
6707 }
6708 s2io_wake_all_tx_queue(sp);
6709 } else { /* Device is down */
6710 struct XENA_dev_config __iomem *bar0 = sp->bar0;
6711 u64 val64 = new_mtu;
6712
6713 writeq(vBIT(val64, 2, 14), &bar0->rmac_max_pyld_len);
6714 }
6715
6716 return ret;
6717 }
6718
6719 /**
6720 * s2io_set_link - Set the LInk status
6721 * @data: long pointer to device private structue
6722 * Description: Sets the link status for the adapter
6723 */
6724
s2io_set_link(struct work_struct * work)6725 static void s2io_set_link(struct work_struct *work)
6726 {
6727 struct s2io_nic *nic = container_of(work, struct s2io_nic,
6728 set_link_task);
6729 struct net_device *dev = nic->dev;
6730 struct XENA_dev_config __iomem *bar0 = nic->bar0;
6731 register u64 val64;
6732 u16 subid;
6733
6734 rtnl_lock();
6735
6736 if (!netif_running(dev))
6737 goto out_unlock;
6738
6739 if (test_and_set_bit(__S2IO_STATE_LINK_TASK, &(nic->state))) {
6740 /* The card is being reset, no point doing anything */
6741 goto out_unlock;
6742 }
6743
6744 subid = nic->pdev->subsystem_device;
6745 if (s2io_link_fault_indication(nic) == MAC_RMAC_ERR_TIMER) {
6746 /*
6747 * Allow a small delay for the NICs self initiated
6748 * cleanup to complete.
6749 */
6750 msleep(100);
6751 }
6752
6753 val64 = readq(&bar0->adapter_status);
6754 if (LINK_IS_UP(val64)) {
6755 if (!(readq(&bar0->adapter_control) & ADAPTER_CNTL_EN)) {
6756 if (verify_xena_quiescence(nic)) {
6757 val64 = readq(&bar0->adapter_control);
6758 val64 |= ADAPTER_CNTL_EN;
6759 writeq(val64, &bar0->adapter_control);
6760 if (CARDS_WITH_FAULTY_LINK_INDICATORS(
6761 nic->device_type, subid)) {
6762 val64 = readq(&bar0->gpio_control);
6763 val64 |= GPIO_CTRL_GPIO_0;
6764 writeq(val64, &bar0->gpio_control);
6765 val64 = readq(&bar0->gpio_control);
6766 } else {
6767 val64 |= ADAPTER_LED_ON;
6768 writeq(val64, &bar0->adapter_control);
6769 }
6770 nic->device_enabled_once = true;
6771 } else {
6772 DBG_PRINT(ERR_DBG,
6773 "%s: Error: device is not Quiescent\n",
6774 dev->name);
6775 s2io_stop_all_tx_queue(nic);
6776 }
6777 }
6778 val64 = readq(&bar0->adapter_control);
6779 val64 |= ADAPTER_LED_ON;
6780 writeq(val64, &bar0->adapter_control);
6781 s2io_link(nic, LINK_UP);
6782 } else {
6783 if (CARDS_WITH_FAULTY_LINK_INDICATORS(nic->device_type,
6784 subid)) {
6785 val64 = readq(&bar0->gpio_control);
6786 val64 &= ~GPIO_CTRL_GPIO_0;
6787 writeq(val64, &bar0->gpio_control);
6788 val64 = readq(&bar0->gpio_control);
6789 }
6790 /* turn off LED */
6791 val64 = readq(&bar0->adapter_control);
6792 val64 = val64 & (~ADAPTER_LED_ON);
6793 writeq(val64, &bar0->adapter_control);
6794 s2io_link(nic, LINK_DOWN);
6795 }
6796 clear_bit(__S2IO_STATE_LINK_TASK, &(nic->state));
6797
6798 out_unlock:
6799 rtnl_unlock();
6800 }
6801
set_rxd_buffer_pointer(struct s2io_nic * sp,struct RxD_t * rxdp,struct buffAdd * ba,struct sk_buff ** skb,u64 * temp0,u64 * temp1,u64 * temp2,int size)6802 static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
6803 struct buffAdd *ba,
6804 struct sk_buff **skb, u64 *temp0, u64 *temp1,
6805 u64 *temp2, int size)
6806 {
6807 struct net_device *dev = sp->dev;
6808 struct swStat *stats = &sp->mac_control.stats_info->sw_stat;
6809
6810 if ((sp->rxd_mode == RXD_MODE_1) && (rxdp->Host_Control == 0)) {
6811 struct RxD1 *rxdp1 = (struct RxD1 *)rxdp;
6812 /* allocate skb */
6813 if (*skb) {
6814 DBG_PRINT(INFO_DBG, "SKB is not NULL\n");
6815 /*
6816 * As Rx frame are not going to be processed,
6817 * using same mapped address for the Rxd
6818 * buffer pointer
6819 */
6820 rxdp1->Buffer0_ptr = *temp0;
6821 } else {
6822 *skb = netdev_alloc_skb(dev, size);
6823 if (!(*skb)) {
6824 DBG_PRINT(INFO_DBG,
6825 "%s: Out of memory to allocate %s\n",
6826 dev->name, "1 buf mode SKBs");
6827 stats->mem_alloc_fail_cnt++;
6828 return -ENOMEM ;
6829 }
6830 stats->mem_allocated += (*skb)->truesize;
6831 /* storing the mapped addr in a temp variable
6832 * such it will be used for next rxd whose
6833 * Host Control is NULL
6834 */
6835 rxdp1->Buffer0_ptr = *temp0 =
6836 pci_map_single(sp->pdev, (*skb)->data,
6837 size - NET_IP_ALIGN,
6838 PCI_DMA_FROMDEVICE);
6839 if (pci_dma_mapping_error(sp->pdev, rxdp1->Buffer0_ptr))
6840 goto memalloc_failed;
6841 rxdp->Host_Control = (unsigned long) (*skb);
6842 }
6843 } else if ((sp->rxd_mode == RXD_MODE_3B) && (rxdp->Host_Control == 0)) {
6844 struct RxD3 *rxdp3 = (struct RxD3 *)rxdp;
6845 /* Two buffer Mode */
6846 if (*skb) {
6847 rxdp3->Buffer2_ptr = *temp2;
6848 rxdp3->Buffer0_ptr = *temp0;
6849 rxdp3->Buffer1_ptr = *temp1;
6850 } else {
6851 *skb = netdev_alloc_skb(dev, size);
6852 if (!(*skb)) {
6853 DBG_PRINT(INFO_DBG,
6854 "%s: Out of memory to allocate %s\n",
6855 dev->name,
6856 "2 buf mode SKBs");
6857 stats->mem_alloc_fail_cnt++;
6858 return -ENOMEM;
6859 }
6860 stats->mem_allocated += (*skb)->truesize;
6861 rxdp3->Buffer2_ptr = *temp2 =
6862 pci_map_single(sp->pdev, (*skb)->data,
6863 dev->mtu + 4,
6864 PCI_DMA_FROMDEVICE);
6865 if (pci_dma_mapping_error(sp->pdev, rxdp3->Buffer2_ptr))
6866 goto memalloc_failed;
6867 rxdp3->Buffer0_ptr = *temp0 =
6868 pci_map_single(sp->pdev, ba->ba_0, BUF0_LEN,
6869 PCI_DMA_FROMDEVICE);
6870 if (pci_dma_mapping_error(sp->pdev,
6871 rxdp3->Buffer0_ptr)) {
6872 pci_unmap_single(sp->pdev,
6873 (dma_addr_t)rxdp3->Buffer2_ptr,
6874 dev->mtu + 4,
6875 PCI_DMA_FROMDEVICE);
6876 goto memalloc_failed;
6877 }
6878 rxdp->Host_Control = (unsigned long) (*skb);
6879
6880 /* Buffer-1 will be dummy buffer not used */
6881 rxdp3->Buffer1_ptr = *temp1 =
6882 pci_map_single(sp->pdev, ba->ba_1, BUF1_LEN,
6883 PCI_DMA_FROMDEVICE);
6884 if (pci_dma_mapping_error(sp->pdev,
6885 rxdp3->Buffer1_ptr)) {
6886 pci_unmap_single(sp->pdev,
6887 (dma_addr_t)rxdp3->Buffer0_ptr,
6888 BUF0_LEN, PCI_DMA_FROMDEVICE);
6889 pci_unmap_single(sp->pdev,
6890 (dma_addr_t)rxdp3->Buffer2_ptr,
6891 dev->mtu + 4,
6892 PCI_DMA_FROMDEVICE);
6893 goto memalloc_failed;
6894 }
6895 }
6896 }
6897 return 0;
6898
6899 memalloc_failed:
6900 stats->pci_map_fail_cnt++;
6901 stats->mem_freed += (*skb)->truesize;
6902 dev_kfree_skb(*skb);
6903 return -ENOMEM;
6904 }
6905
set_rxd_buffer_size(struct s2io_nic * sp,struct RxD_t * rxdp,int size)6906 static void set_rxd_buffer_size(struct s2io_nic *sp, struct RxD_t *rxdp,
6907 int size)
6908 {
6909 struct net_device *dev = sp->dev;
6910 if (sp->rxd_mode == RXD_MODE_1) {
6911 rxdp->Control_2 = SET_BUFFER0_SIZE_1(size - NET_IP_ALIGN);
6912 } else if (sp->rxd_mode == RXD_MODE_3B) {
6913 rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
6914 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
6915 rxdp->Control_2 |= SET_BUFFER2_SIZE_3(dev->mtu + 4);
6916 }
6917 }
6918
rxd_owner_bit_reset(struct s2io_nic * sp)6919 static int rxd_owner_bit_reset(struct s2io_nic *sp)
6920 {
6921 int i, j, k, blk_cnt = 0, size;
6922 struct config_param *config = &sp->config;
6923 struct mac_info *mac_control = &sp->mac_control;
6924 struct net_device *dev = sp->dev;
6925 struct RxD_t *rxdp = NULL;
6926 struct sk_buff *skb = NULL;
6927 struct buffAdd *ba = NULL;
6928 u64 temp0_64 = 0, temp1_64 = 0, temp2_64 = 0;
6929
6930 /* Calculate the size based on ring mode */
6931 size = dev->mtu + HEADER_ETHERNET_II_802_3_SIZE +
6932 HEADER_802_2_SIZE + HEADER_SNAP_SIZE;
6933 if (sp->rxd_mode == RXD_MODE_1)
6934 size += NET_IP_ALIGN;
6935 else if (sp->rxd_mode == RXD_MODE_3B)
6936 size = dev->mtu + ALIGN_SIZE + BUF0_LEN + 4;
6937
6938 for (i = 0; i < config->rx_ring_num; i++) {
6939 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
6940 struct ring_info *ring = &mac_control->rings[i];
6941
6942 blk_cnt = rx_cfg->num_rxd / (rxd_count[sp->rxd_mode] + 1);
6943
6944 for (j = 0; j < blk_cnt; j++) {
6945 for (k = 0; k < rxd_count[sp->rxd_mode]; k++) {
6946 rxdp = ring->rx_blocks[j].rxds[k].virt_addr;
6947 if (sp->rxd_mode == RXD_MODE_3B)
6948 ba = &ring->ba[j][k];
6949 if (set_rxd_buffer_pointer(sp, rxdp, ba, &skb,
6950 (u64 *)&temp0_64,
6951 (u64 *)&temp1_64,
6952 (u64 *)&temp2_64,
6953 size) == -ENOMEM) {
6954 return 0;
6955 }
6956
6957 set_rxd_buffer_size(sp, rxdp, size);
6958 wmb();
6959 /* flip the Ownership bit to Hardware */
6960 rxdp->Control_1 |= RXD_OWN_XENA;
6961 }
6962 }
6963 }
6964 return 0;
6965
6966 }
6967
s2io_add_isr(struct s2io_nic * sp)6968 static int s2io_add_isr(struct s2io_nic *sp)
6969 {
6970 int ret = 0;
6971 struct net_device *dev = sp->dev;
6972 int err = 0;
6973
6974 if (sp->config.intr_type == MSI_X)
6975 ret = s2io_enable_msi_x(sp);
6976 if (ret) {
6977 DBG_PRINT(ERR_DBG, "%s: Defaulting to INTA\n", dev->name);
6978 sp->config.intr_type = INTA;
6979 }
6980
6981 /*
6982 * Store the values of the MSIX table in
6983 * the struct s2io_nic structure
6984 */
6985 store_xmsi_data(sp);
6986
6987 /* After proper initialization of H/W, register ISR */
6988 if (sp->config.intr_type == MSI_X) {
6989 int i, msix_rx_cnt = 0;
6990
6991 for (i = 0; i < sp->num_entries; i++) {
6992 if (sp->s2io_entries[i].in_use == MSIX_FLG) {
6993 if (sp->s2io_entries[i].type ==
6994 MSIX_RING_TYPE) {
6995 sprintf(sp->desc[i], "%s:MSI-X-%d-RX",
6996 dev->name, i);
6997 err = request_irq(sp->entries[i].vector,
6998 s2io_msix_ring_handle,
6999 0,
7000 sp->desc[i],
7001 sp->s2io_entries[i].arg);
7002 } else if (sp->s2io_entries[i].type ==
7003 MSIX_ALARM_TYPE) {
7004 sprintf(sp->desc[i], "%s:MSI-X-%d-TX",
7005 dev->name, i);
7006 err = request_irq(sp->entries[i].vector,
7007 s2io_msix_fifo_handle,
7008 0,
7009 sp->desc[i],
7010 sp->s2io_entries[i].arg);
7011
7012 }
7013 /* if either data or addr is zero print it. */
7014 if (!(sp->msix_info[i].addr &&
7015 sp->msix_info[i].data)) {
7016 DBG_PRINT(ERR_DBG,
7017 "%s @Addr:0x%llx Data:0x%llx\n",
7018 sp->desc[i],
7019 (unsigned long long)
7020 sp->msix_info[i].addr,
7021 (unsigned long long)
7022 ntohl(sp->msix_info[i].data));
7023 } else
7024 msix_rx_cnt++;
7025 if (err) {
7026 remove_msix_isr(sp);
7027
7028 DBG_PRINT(ERR_DBG,
7029 "%s:MSI-X-%d registration "
7030 "failed\n", dev->name, i);
7031
7032 DBG_PRINT(ERR_DBG,
7033 "%s: Defaulting to INTA\n",
7034 dev->name);
7035 sp->config.intr_type = INTA;
7036 break;
7037 }
7038 sp->s2io_entries[i].in_use =
7039 MSIX_REGISTERED_SUCCESS;
7040 }
7041 }
7042 if (!err) {
7043 pr_info("MSI-X-RX %d entries enabled\n", --msix_rx_cnt);
7044 DBG_PRINT(INFO_DBG,
7045 "MSI-X-TX entries enabled through alarm vector\n");
7046 }
7047 }
7048 if (sp->config.intr_type == INTA) {
7049 err = request_irq((int)sp->pdev->irq, s2io_isr, IRQF_SHARED,
7050 sp->name, dev);
7051 if (err) {
7052 DBG_PRINT(ERR_DBG, "%s: ISR registration failed\n",
7053 dev->name);
7054 return -1;
7055 }
7056 }
7057 return 0;
7058 }
7059
s2io_rem_isr(struct s2io_nic * sp)7060 static void s2io_rem_isr(struct s2io_nic *sp)
7061 {
7062 if (sp->config.intr_type == MSI_X)
7063 remove_msix_isr(sp);
7064 else
7065 remove_inta_isr(sp);
7066 }
7067
do_s2io_card_down(struct s2io_nic * sp,int do_io)7068 static void do_s2io_card_down(struct s2io_nic *sp, int do_io)
7069 {
7070 int cnt = 0;
7071 struct XENA_dev_config __iomem *bar0 = sp->bar0;
7072 register u64 val64 = 0;
7073 struct config_param *config;
7074 config = &sp->config;
7075
7076 if (!is_s2io_card_up(sp))
7077 return;
7078
7079 del_timer_sync(&sp->alarm_timer);
7080 /* If s2io_set_link task is executing, wait till it completes. */
7081 while (test_and_set_bit(__S2IO_STATE_LINK_TASK, &(sp->state)))
7082 msleep(50);
7083 clear_bit(__S2IO_STATE_CARD_UP, &sp->state);
7084
7085 /* Disable napi */
7086 if (sp->config.napi) {
7087 int off = 0;
7088 if (config->intr_type == MSI_X) {
7089 for (; off < sp->config.rx_ring_num; off++)
7090 napi_disable(&sp->mac_control.rings[off].napi);
7091 }
7092 else
7093 napi_disable(&sp->napi);
7094 }
7095
7096 /* disable Tx and Rx traffic on the NIC */
7097 if (do_io)
7098 stop_nic(sp);
7099
7100 s2io_rem_isr(sp);
7101
7102 /* stop the tx queue, indicate link down */
7103 s2io_link(sp, LINK_DOWN);
7104
7105 /* Check if the device is Quiescent and then Reset the NIC */
7106 while (do_io) {
7107 /* As per the HW requirement we need to replenish the
7108 * receive buffer to avoid the ring bump. Since there is
7109 * no intention of processing the Rx frame at this pointwe are
7110 * just setting the ownership bit of rxd in Each Rx
7111 * ring to HW and set the appropriate buffer size
7112 * based on the ring mode
7113 */
7114 rxd_owner_bit_reset(sp);
7115
7116 val64 = readq(&bar0->adapter_status);
7117 if (verify_xena_quiescence(sp)) {
7118 if (verify_pcc_quiescent(sp, sp->device_enabled_once))
7119 break;
7120 }
7121
7122 msleep(50);
7123 cnt++;
7124 if (cnt == 10) {
7125 DBG_PRINT(ERR_DBG, "Device not Quiescent - "
7126 "adapter status reads 0x%llx\n",
7127 (unsigned long long)val64);
7128 break;
7129 }
7130 }
7131 if (do_io)
7132 s2io_reset(sp);
7133
7134 /* Free all Tx buffers */
7135 free_tx_buffers(sp);
7136
7137 /* Free all Rx buffers */
7138 free_rx_buffers(sp);
7139
7140 clear_bit(__S2IO_STATE_LINK_TASK, &(sp->state));
7141 }
7142
s2io_card_down(struct s2io_nic * sp)7143 static void s2io_card_down(struct s2io_nic *sp)
7144 {
7145 do_s2io_card_down(sp, 1);
7146 }
7147
s2io_card_up(struct s2io_nic * sp)7148 static int s2io_card_up(struct s2io_nic *sp)
7149 {
7150 int i, ret = 0;
7151 struct config_param *config;
7152 struct mac_info *mac_control;
7153 struct net_device *dev = (struct net_device *)sp->dev;
7154 u16 interruptible;
7155
7156 /* Initialize the H/W I/O registers */
7157 ret = init_nic(sp);
7158 if (ret != 0) {
7159 DBG_PRINT(ERR_DBG, "%s: H/W initialization failed\n",
7160 dev->name);
7161 if (ret != -EIO)
7162 s2io_reset(sp);
7163 return ret;
7164 }
7165
7166 /*
7167 * Initializing the Rx buffers. For now we are considering only 1
7168 * Rx ring and initializing buffers into 30 Rx blocks
7169 */
7170 config = &sp->config;
7171 mac_control = &sp->mac_control;
7172
7173 for (i = 0; i < config->rx_ring_num; i++) {
7174 struct ring_info *ring = &mac_control->rings[i];
7175
7176 ring->mtu = dev->mtu;
7177 ring->lro = !!(dev->features & NETIF_F_LRO);
7178 ret = fill_rx_buffers(sp, ring, 1);
7179 if (ret) {
7180 DBG_PRINT(ERR_DBG, "%s: Out of memory in Open\n",
7181 dev->name);
7182 s2io_reset(sp);
7183 free_rx_buffers(sp);
7184 return -ENOMEM;
7185 }
7186 DBG_PRINT(INFO_DBG, "Buf in ring:%d is %d:\n", i,
7187 ring->rx_bufs_left);
7188 }
7189
7190 /* Initialise napi */
7191 if (config->napi) {
7192 if (config->intr_type == MSI_X) {
7193 for (i = 0; i < sp->config.rx_ring_num; i++)
7194 napi_enable(&sp->mac_control.rings[i].napi);
7195 } else {
7196 napi_enable(&sp->napi);
7197 }
7198 }
7199
7200 /* Maintain the state prior to the open */
7201 if (sp->promisc_flg)
7202 sp->promisc_flg = 0;
7203 if (sp->m_cast_flg) {
7204 sp->m_cast_flg = 0;
7205 sp->all_multi_pos = 0;
7206 }
7207
7208 /* Setting its receive mode */
7209 s2io_set_multicast(dev);
7210
7211 if (dev->features & NETIF_F_LRO) {
7212 /* Initialize max aggregatable pkts per session based on MTU */
7213 sp->lro_max_aggr_per_sess = ((1<<16) - 1) / dev->mtu;
7214 /* Check if we can use (if specified) user provided value */
7215 if (lro_max_pkts < sp->lro_max_aggr_per_sess)
7216 sp->lro_max_aggr_per_sess = lro_max_pkts;
7217 }
7218
7219 /* Enable Rx Traffic and interrupts on the NIC */
7220 if (start_nic(sp)) {
7221 DBG_PRINT(ERR_DBG, "%s: Starting NIC failed\n", dev->name);
7222 s2io_reset(sp);
7223 free_rx_buffers(sp);
7224 return -ENODEV;
7225 }
7226
7227 /* Add interrupt service routine */
7228 if (s2io_add_isr(sp) != 0) {
7229 if (sp->config.intr_type == MSI_X)
7230 s2io_rem_isr(sp);
7231 s2io_reset(sp);
7232 free_rx_buffers(sp);
7233 return -ENODEV;
7234 }
7235
7236 S2IO_TIMER_CONF(sp->alarm_timer, s2io_alarm_handle, sp, (HZ/2));
7237
7238 set_bit(__S2IO_STATE_CARD_UP, &sp->state);
7239
7240 /* Enable select interrupts */
7241 en_dis_err_alarms(sp, ENA_ALL_INTRS, ENABLE_INTRS);
7242 if (sp->config.intr_type != INTA) {
7243 interruptible = TX_TRAFFIC_INTR | TX_PIC_INTR;
7244 en_dis_able_nic_intrs(sp, interruptible, ENABLE_INTRS);
7245 } else {
7246 interruptible = TX_TRAFFIC_INTR | RX_TRAFFIC_INTR;
7247 interruptible |= TX_PIC_INTR;
7248 en_dis_able_nic_intrs(sp, interruptible, ENABLE_INTRS);
7249 }
7250
7251 return 0;
7252 }
7253
7254 /**
7255 * s2io_restart_nic - Resets the NIC.
7256 * @data : long pointer to the device private structure
7257 * Description:
7258 * This function is scheduled to be run by the s2io_tx_watchdog
7259 * function after 0.5 secs to reset the NIC. The idea is to reduce
7260 * the run time of the watch dog routine which is run holding a
7261 * spin lock.
7262 */
7263
s2io_restart_nic(struct work_struct * work)7264 static void s2io_restart_nic(struct work_struct *work)
7265 {
7266 struct s2io_nic *sp = container_of(work, struct s2io_nic, rst_timer_task);
7267 struct net_device *dev = sp->dev;
7268
7269 rtnl_lock();
7270
7271 if (!netif_running(dev))
7272 goto out_unlock;
7273
7274 s2io_card_down(sp);
7275 if (s2io_card_up(sp)) {
7276 DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n", dev->name);
7277 }
7278 s2io_wake_all_tx_queue(sp);
7279 DBG_PRINT(ERR_DBG, "%s: was reset by Tx watchdog timer\n", dev->name);
7280 out_unlock:
7281 rtnl_unlock();
7282 }
7283
7284 /**
7285 * s2io_tx_watchdog - Watchdog for transmit side.
7286 * @dev : Pointer to net device structure
7287 * Description:
7288 * This function is triggered if the Tx Queue is stopped
7289 * for a pre-defined amount of time when the Interface is still up.
7290 * If the Interface is jammed in such a situation, the hardware is
7291 * reset (by s2io_close) and restarted again (by s2io_open) to
7292 * overcome any problem that might have been caused in the hardware.
7293 * Return value:
7294 * void
7295 */
7296
s2io_tx_watchdog(struct net_device * dev)7297 static void s2io_tx_watchdog(struct net_device *dev)
7298 {
7299 struct s2io_nic *sp = netdev_priv(dev);
7300 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
7301
7302 if (netif_carrier_ok(dev)) {
7303 swstats->watchdog_timer_cnt++;
7304 schedule_work(&sp->rst_timer_task);
7305 swstats->soft_reset_cnt++;
7306 }
7307 }
7308
7309 /**
7310 * rx_osm_handler - To perform some OS related operations on SKB.
7311 * @sp: private member of the device structure,pointer to s2io_nic structure.
7312 * @skb : the socket buffer pointer.
7313 * @len : length of the packet
7314 * @cksum : FCS checksum of the frame.
7315 * @ring_no : the ring from which this RxD was extracted.
7316 * Description:
7317 * This function is called by the Rx interrupt serivce routine to perform
7318 * some OS related operations on the SKB before passing it to the upper
7319 * layers. It mainly checks if the checksum is OK, if so adds it to the
7320 * SKBs cksum variable, increments the Rx packet count and passes the SKB
7321 * to the upper layer. If the checksum is wrong, it increments the Rx
7322 * packet error count, frees the SKB and returns error.
7323 * Return value:
7324 * SUCCESS on success and -1 on failure.
7325 */
rx_osm_handler(struct ring_info * ring_data,struct RxD_t * rxdp)7326 static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp)
7327 {
7328 struct s2io_nic *sp = ring_data->nic;
7329 struct net_device *dev = (struct net_device *)ring_data->dev;
7330 struct sk_buff *skb = (struct sk_buff *)
7331 ((unsigned long)rxdp->Host_Control);
7332 int ring_no = ring_data->ring_no;
7333 u16 l3_csum, l4_csum;
7334 unsigned long long err = rxdp->Control_1 & RXD_T_CODE;
7335 struct lro *uninitialized_var(lro);
7336 u8 err_mask;
7337 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
7338
7339 skb->dev = dev;
7340
7341 if (err) {
7342 /* Check for parity error */
7343 if (err & 0x1)
7344 swstats->parity_err_cnt++;
7345
7346 err_mask = err >> 48;
7347 switch (err_mask) {
7348 case 1:
7349 swstats->rx_parity_err_cnt++;
7350 break;
7351
7352 case 2:
7353 swstats->rx_abort_cnt++;
7354 break;
7355
7356 case 3:
7357 swstats->rx_parity_abort_cnt++;
7358 break;
7359
7360 case 4:
7361 swstats->rx_rda_fail_cnt++;
7362 break;
7363
7364 case 5:
7365 swstats->rx_unkn_prot_cnt++;
7366 break;
7367
7368 case 6:
7369 swstats->rx_fcs_err_cnt++;
7370 break;
7371
7372 case 7:
7373 swstats->rx_buf_size_err_cnt++;
7374 break;
7375
7376 case 8:
7377 swstats->rx_rxd_corrupt_cnt++;
7378 break;
7379
7380 case 15:
7381 swstats->rx_unkn_err_cnt++;
7382 break;
7383 }
7384 /*
7385 * Drop the packet if bad transfer code. Exception being
7386 * 0x5, which could be due to unsupported IPv6 extension header.
7387 * In this case, we let stack handle the packet.
7388 * Note that in this case, since checksum will be incorrect,
7389 * stack will validate the same.
7390 */
7391 if (err_mask != 0x5) {
7392 DBG_PRINT(ERR_DBG, "%s: Rx error Value: 0x%x\n",
7393 dev->name, err_mask);
7394 dev->stats.rx_crc_errors++;
7395 swstats->mem_freed
7396 += skb->truesize;
7397 dev_kfree_skb(skb);
7398 ring_data->rx_bufs_left -= 1;
7399 rxdp->Host_Control = 0;
7400 return 0;
7401 }
7402 }
7403
7404 rxdp->Host_Control = 0;
7405 if (sp->rxd_mode == RXD_MODE_1) {
7406 int len = RXD_GET_BUFFER0_SIZE_1(rxdp->Control_2);
7407
7408 skb_put(skb, len);
7409 } else if (sp->rxd_mode == RXD_MODE_3B) {
7410 int get_block = ring_data->rx_curr_get_info.block_index;
7411 int get_off = ring_data->rx_curr_get_info.offset;
7412 int buf0_len = RXD_GET_BUFFER0_SIZE_3(rxdp->Control_2);
7413 int buf2_len = RXD_GET_BUFFER2_SIZE_3(rxdp->Control_2);
7414 unsigned char *buff = skb_push(skb, buf0_len);
7415
7416 struct buffAdd *ba = &ring_data->ba[get_block][get_off];
7417 memcpy(buff, ba->ba_0, buf0_len);
7418 skb_put(skb, buf2_len);
7419 }
7420
7421 if ((rxdp->Control_1 & TCP_OR_UDP_FRAME) &&
7422 ((!ring_data->lro) ||
7423 (ring_data->lro && (!(rxdp->Control_1 & RXD_FRAME_IP_FRAG)))) &&
7424 (dev->features & NETIF_F_RXCSUM)) {
7425 l3_csum = RXD_GET_L3_CKSUM(rxdp->Control_1);
7426 l4_csum = RXD_GET_L4_CKSUM(rxdp->Control_1);
7427 if ((l3_csum == L3_CKSUM_OK) && (l4_csum == L4_CKSUM_OK)) {
7428 /*
7429 * NIC verifies if the Checksum of the received
7430 * frame is Ok or not and accordingly returns
7431 * a flag in the RxD.
7432 */
7433 skb->ip_summed = CHECKSUM_UNNECESSARY;
7434 if (ring_data->lro) {
7435 u32 tcp_len = 0;
7436 u8 *tcp;
7437 int ret = 0;
7438
7439 ret = s2io_club_tcp_session(ring_data,
7440 skb->data, &tcp,
7441 &tcp_len, &lro,
7442 rxdp, sp);
7443 switch (ret) {
7444 case 3: /* Begin anew */
7445 lro->parent = skb;
7446 goto aggregate;
7447 case 1: /* Aggregate */
7448 lro_append_pkt(sp, lro, skb, tcp_len);
7449 goto aggregate;
7450 case 4: /* Flush session */
7451 lro_append_pkt(sp, lro, skb, tcp_len);
7452 queue_rx_frame(lro->parent,
7453 lro->vlan_tag);
7454 clear_lro_session(lro);
7455 swstats->flush_max_pkts++;
7456 goto aggregate;
7457 case 2: /* Flush both */
7458 lro->parent->data_len = lro->frags_len;
7459 swstats->sending_both++;
7460 queue_rx_frame(lro->parent,
7461 lro->vlan_tag);
7462 clear_lro_session(lro);
7463 goto send_up;
7464 case 0: /* sessions exceeded */
7465 case -1: /* non-TCP or not L2 aggregatable */
7466 case 5: /*
7467 * First pkt in session not
7468 * L3/L4 aggregatable
7469 */
7470 break;
7471 default:
7472 DBG_PRINT(ERR_DBG,
7473 "%s: Samadhana!!\n",
7474 __func__);
7475 BUG();
7476 }
7477 }
7478 } else {
7479 /*
7480 * Packet with erroneous checksum, let the
7481 * upper layers deal with it.
7482 */
7483 skb_checksum_none_assert(skb);
7484 }
7485 } else
7486 skb_checksum_none_assert(skb);
7487
7488 swstats->mem_freed += skb->truesize;
7489 send_up:
7490 skb_record_rx_queue(skb, ring_no);
7491 queue_rx_frame(skb, RXD_GET_VLAN_TAG(rxdp->Control_2));
7492 aggregate:
7493 sp->mac_control.rings[ring_no].rx_bufs_left -= 1;
7494 return SUCCESS;
7495 }
7496
7497 /**
7498 * s2io_link - stops/starts the Tx queue.
7499 * @sp : private member of the device structure, which is a pointer to the
7500 * s2io_nic structure.
7501 * @link : inidicates whether link is UP/DOWN.
7502 * Description:
7503 * This function stops/starts the Tx queue depending on whether the link
7504 * status of the NIC is is down or up. This is called by the Alarm
7505 * interrupt handler whenever a link change interrupt comes up.
7506 * Return value:
7507 * void.
7508 */
7509
s2io_link(struct s2io_nic * sp,int link)7510 static void s2io_link(struct s2io_nic *sp, int link)
7511 {
7512 struct net_device *dev = (struct net_device *)sp->dev;
7513 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
7514
7515 if (link != sp->last_link_state) {
7516 init_tti(sp, link);
7517 if (link == LINK_DOWN) {
7518 DBG_PRINT(ERR_DBG, "%s: Link down\n", dev->name);
7519 s2io_stop_all_tx_queue(sp);
7520 netif_carrier_off(dev);
7521 if (swstats->link_up_cnt)
7522 swstats->link_up_time =
7523 jiffies - sp->start_time;
7524 swstats->link_down_cnt++;
7525 } else {
7526 DBG_PRINT(ERR_DBG, "%s: Link Up\n", dev->name);
7527 if (swstats->link_down_cnt)
7528 swstats->link_down_time =
7529 jiffies - sp->start_time;
7530 swstats->link_up_cnt++;
7531 netif_carrier_on(dev);
7532 s2io_wake_all_tx_queue(sp);
7533 }
7534 }
7535 sp->last_link_state = link;
7536 sp->start_time = jiffies;
7537 }
7538
7539 /**
7540 * s2io_init_pci -Initialization of PCI and PCI-X configuration registers .
7541 * @sp : private member of the device structure, which is a pointer to the
7542 * s2io_nic structure.
7543 * Description:
7544 * This function initializes a few of the PCI and PCI-X configuration registers
7545 * with recommended values.
7546 * Return value:
7547 * void
7548 */
7549
s2io_init_pci(struct s2io_nic * sp)7550 static void s2io_init_pci(struct s2io_nic *sp)
7551 {
7552 u16 pci_cmd = 0, pcix_cmd = 0;
7553
7554 /* Enable Data Parity Error Recovery in PCI-X command register. */
7555 pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER,
7556 &(pcix_cmd));
7557 pci_write_config_word(sp->pdev, PCIX_COMMAND_REGISTER,
7558 (pcix_cmd | 1));
7559 pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER,
7560 &(pcix_cmd));
7561
7562 /* Set the PErr Response bit in PCI command register. */
7563 pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd);
7564 pci_write_config_word(sp->pdev, PCI_COMMAND,
7565 (pci_cmd | PCI_COMMAND_PARITY));
7566 pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd);
7567 }
7568
s2io_verify_parm(struct pci_dev * pdev,u8 * dev_intr_type,u8 * dev_multiq)7569 static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type,
7570 u8 *dev_multiq)
7571 {
7572 int i;
7573
7574 if ((tx_fifo_num > MAX_TX_FIFOS) || (tx_fifo_num < 1)) {
7575 DBG_PRINT(ERR_DBG, "Requested number of tx fifos "
7576 "(%d) not supported\n", tx_fifo_num);
7577
7578 if (tx_fifo_num < 1)
7579 tx_fifo_num = 1;
7580 else
7581 tx_fifo_num = MAX_TX_FIFOS;
7582
7583 DBG_PRINT(ERR_DBG, "Default to %d tx fifos\n", tx_fifo_num);
7584 }
7585
7586 if (multiq)
7587 *dev_multiq = multiq;
7588
7589 if (tx_steering_type && (1 == tx_fifo_num)) {
7590 if (tx_steering_type != TX_DEFAULT_STEERING)
7591 DBG_PRINT(ERR_DBG,
7592 "Tx steering is not supported with "
7593 "one fifo. Disabling Tx steering.\n");
7594 tx_steering_type = NO_STEERING;
7595 }
7596
7597 if ((tx_steering_type < NO_STEERING) ||
7598 (tx_steering_type > TX_DEFAULT_STEERING)) {
7599 DBG_PRINT(ERR_DBG,
7600 "Requested transmit steering not supported\n");
7601 DBG_PRINT(ERR_DBG, "Disabling transmit steering\n");
7602 tx_steering_type = NO_STEERING;
7603 }
7604
7605 if (rx_ring_num > MAX_RX_RINGS) {
7606 DBG_PRINT(ERR_DBG,
7607 "Requested number of rx rings not supported\n");
7608 DBG_PRINT(ERR_DBG, "Default to %d rx rings\n",
7609 MAX_RX_RINGS);
7610 rx_ring_num = MAX_RX_RINGS;
7611 }
7612
7613 if ((*dev_intr_type != INTA) && (*dev_intr_type != MSI_X)) {
7614 DBG_PRINT(ERR_DBG, "Wrong intr_type requested. "
7615 "Defaulting to INTA\n");
7616 *dev_intr_type = INTA;
7617 }
7618
7619 if ((*dev_intr_type == MSI_X) &&
7620 ((pdev->device != PCI_DEVICE_ID_HERC_WIN) &&
7621 (pdev->device != PCI_DEVICE_ID_HERC_UNI))) {
7622 DBG_PRINT(ERR_DBG, "Xframe I does not support MSI_X. "
7623 "Defaulting to INTA\n");
7624 *dev_intr_type = INTA;
7625 }
7626
7627 if ((rx_ring_mode != 1) && (rx_ring_mode != 2)) {
7628 DBG_PRINT(ERR_DBG, "Requested ring mode not supported\n");
7629 DBG_PRINT(ERR_DBG, "Defaulting to 1-buffer mode\n");
7630 rx_ring_mode = 1;
7631 }
7632
7633 for (i = 0; i < MAX_RX_RINGS; i++)
7634 if (rx_ring_sz[i] > MAX_RX_BLOCKS_PER_RING) {
7635 DBG_PRINT(ERR_DBG, "Requested rx ring size not "
7636 "supported\nDefaulting to %d\n",
7637 MAX_RX_BLOCKS_PER_RING);
7638 rx_ring_sz[i] = MAX_RX_BLOCKS_PER_RING;
7639 }
7640
7641 return SUCCESS;
7642 }
7643
7644 /**
7645 * rts_ds_steer - Receive traffic steering based on IPv4 or IPv6 TOS
7646 * or Traffic class respectively.
7647 * @nic: device private variable
7648 * Description: The function configures the receive steering to
7649 * desired receive ring.
7650 * Return Value: SUCCESS on success and
7651 * '-1' on failure (endian settings incorrect).
7652 */
rts_ds_steer(struct s2io_nic * nic,u8 ds_codepoint,u8 ring)7653 static int rts_ds_steer(struct s2io_nic *nic, u8 ds_codepoint, u8 ring)
7654 {
7655 struct XENA_dev_config __iomem *bar0 = nic->bar0;
7656 register u64 val64 = 0;
7657
7658 if (ds_codepoint > 63)
7659 return FAILURE;
7660
7661 val64 = RTS_DS_MEM_DATA(ring);
7662 writeq(val64, &bar0->rts_ds_mem_data);
7663
7664 val64 = RTS_DS_MEM_CTRL_WE |
7665 RTS_DS_MEM_CTRL_STROBE_NEW_CMD |
7666 RTS_DS_MEM_CTRL_OFFSET(ds_codepoint);
7667
7668 writeq(val64, &bar0->rts_ds_mem_ctrl);
7669
7670 return wait_for_cmd_complete(&bar0->rts_ds_mem_ctrl,
7671 RTS_DS_MEM_CTRL_STROBE_CMD_BEING_EXECUTED,
7672 S2IO_BIT_RESET);
7673 }
7674
7675 static const struct net_device_ops s2io_netdev_ops = {
7676 .ndo_open = s2io_open,
7677 .ndo_stop = s2io_close,
7678 .ndo_get_stats = s2io_get_stats,
7679 .ndo_start_xmit = s2io_xmit,
7680 .ndo_validate_addr = eth_validate_addr,
7681 .ndo_set_rx_mode = s2io_set_multicast,
7682 .ndo_do_ioctl = s2io_ioctl,
7683 .ndo_set_mac_address = s2io_set_mac_addr,
7684 .ndo_change_mtu = s2io_change_mtu,
7685 .ndo_set_features = s2io_set_features,
7686 .ndo_tx_timeout = s2io_tx_watchdog,
7687 #ifdef CONFIG_NET_POLL_CONTROLLER
7688 .ndo_poll_controller = s2io_netpoll,
7689 #endif
7690 };
7691
7692 /**
7693 * s2io_init_nic - Initialization of the adapter .
7694 * @pdev : structure containing the PCI related information of the device.
7695 * @pre: List of PCI devices supported by the driver listed in s2io_tbl.
7696 * Description:
7697 * The function initializes an adapter identified by the pci_dec structure.
7698 * All OS related initialization including memory and device structure and
7699 * initlaization of the device private variable is done. Also the swapper
7700 * control register is initialized to enable read and write into the I/O
7701 * registers of the device.
7702 * Return value:
7703 * returns 0 on success and negative on failure.
7704 */
7705
7706 static int __devinit
s2io_init_nic(struct pci_dev * pdev,const struct pci_device_id * pre)7707 s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
7708 {
7709 struct s2io_nic *sp;
7710 struct net_device *dev;
7711 int i, j, ret;
7712 int dma_flag = false;
7713 u32 mac_up, mac_down;
7714 u64 val64 = 0, tmp64 = 0;
7715 struct XENA_dev_config __iomem *bar0 = NULL;
7716 u16 subid;
7717 struct config_param *config;
7718 struct mac_info *mac_control;
7719 int mode;
7720 u8 dev_intr_type = intr_type;
7721 u8 dev_multiq = 0;
7722
7723 ret = s2io_verify_parm(pdev, &dev_intr_type, &dev_multiq);
7724 if (ret)
7725 return ret;
7726
7727 ret = pci_enable_device(pdev);
7728 if (ret) {
7729 DBG_PRINT(ERR_DBG,
7730 "%s: pci_enable_device failed\n", __func__);
7731 return ret;
7732 }
7733
7734 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
7735 DBG_PRINT(INIT_DBG, "%s: Using 64bit DMA\n", __func__);
7736 dma_flag = true;
7737 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) {
7738 DBG_PRINT(ERR_DBG,
7739 "Unable to obtain 64bit DMA "
7740 "for consistent allocations\n");
7741 pci_disable_device(pdev);
7742 return -ENOMEM;
7743 }
7744 } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
7745 DBG_PRINT(INIT_DBG, "%s: Using 32bit DMA\n", __func__);
7746 } else {
7747 pci_disable_device(pdev);
7748 return -ENOMEM;
7749 }
7750 ret = pci_request_regions(pdev, s2io_driver_name);
7751 if (ret) {
7752 DBG_PRINT(ERR_DBG, "%s: Request Regions failed - %x\n",
7753 __func__, ret);
7754 pci_disable_device(pdev);
7755 return -ENODEV;
7756 }
7757 if (dev_multiq)
7758 dev = alloc_etherdev_mq(sizeof(struct s2io_nic), tx_fifo_num);
7759 else
7760 dev = alloc_etherdev(sizeof(struct s2io_nic));
7761 if (dev == NULL) {
7762 pci_disable_device(pdev);
7763 pci_release_regions(pdev);
7764 return -ENODEV;
7765 }
7766
7767 pci_set_master(pdev);
7768 pci_set_drvdata(pdev, dev);
7769 SET_NETDEV_DEV(dev, &pdev->dev);
7770
7771 /* Private member variable initialized to s2io NIC structure */
7772 sp = netdev_priv(dev);
7773 sp->dev = dev;
7774 sp->pdev = pdev;
7775 sp->high_dma_flag = dma_flag;
7776 sp->device_enabled_once = false;
7777 if (rx_ring_mode == 1)
7778 sp->rxd_mode = RXD_MODE_1;
7779 if (rx_ring_mode == 2)
7780 sp->rxd_mode = RXD_MODE_3B;
7781
7782 sp->config.intr_type = dev_intr_type;
7783
7784 if ((pdev->device == PCI_DEVICE_ID_HERC_WIN) ||
7785 (pdev->device == PCI_DEVICE_ID_HERC_UNI))
7786 sp->device_type = XFRAME_II_DEVICE;
7787 else
7788 sp->device_type = XFRAME_I_DEVICE;
7789
7790
7791 /* Initialize some PCI/PCI-X fields of the NIC. */
7792 s2io_init_pci(sp);
7793
7794 /*
7795 * Setting the device configuration parameters.
7796 * Most of these parameters can be specified by the user during
7797 * module insertion as they are module loadable parameters. If
7798 * these parameters are not not specified during load time, they
7799 * are initialized with default values.
7800 */
7801 config = &sp->config;
7802 mac_control = &sp->mac_control;
7803
7804 config->napi = napi;
7805 config->tx_steering_type = tx_steering_type;
7806
7807 /* Tx side parameters. */
7808 if (config->tx_steering_type == TX_PRIORITY_STEERING)
7809 config->tx_fifo_num = MAX_TX_FIFOS;
7810 else
7811 config->tx_fifo_num = tx_fifo_num;
7812
7813 /* Initialize the fifos used for tx steering */
7814 if (config->tx_fifo_num < 5) {
7815 if (config->tx_fifo_num == 1)
7816 sp->total_tcp_fifos = 1;
7817 else
7818 sp->total_tcp_fifos = config->tx_fifo_num - 1;
7819 sp->udp_fifo_idx = config->tx_fifo_num - 1;
7820 sp->total_udp_fifos = 1;
7821 sp->other_fifo_idx = sp->total_tcp_fifos - 1;
7822 } else {
7823 sp->total_tcp_fifos = (tx_fifo_num - FIFO_UDP_MAX_NUM -
7824 FIFO_OTHER_MAX_NUM);
7825 sp->udp_fifo_idx = sp->total_tcp_fifos;
7826 sp->total_udp_fifos = FIFO_UDP_MAX_NUM;
7827 sp->other_fifo_idx = sp->udp_fifo_idx + FIFO_UDP_MAX_NUM;
7828 }
7829
7830 config->multiq = dev_multiq;
7831 for (i = 0; i < config->tx_fifo_num; i++) {
7832 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
7833
7834 tx_cfg->fifo_len = tx_fifo_len[i];
7835 tx_cfg->fifo_priority = i;
7836 }
7837
7838 /* mapping the QoS priority to the configured fifos */
7839 for (i = 0; i < MAX_TX_FIFOS; i++)
7840 config->fifo_mapping[i] = fifo_map[config->tx_fifo_num - 1][i];
7841
7842 /* map the hashing selector table to the configured fifos */
7843 for (i = 0; i < config->tx_fifo_num; i++)
7844 sp->fifo_selector[i] = fifo_selector[i];
7845
7846
7847 config->tx_intr_type = TXD_INT_TYPE_UTILZ;
7848 for (i = 0; i < config->tx_fifo_num; i++) {
7849 struct tx_fifo_config *tx_cfg = &config->tx_cfg[i];
7850
7851 tx_cfg->f_no_snoop = (NO_SNOOP_TXD | NO_SNOOP_TXD_BUFFER);
7852 if (tx_cfg->fifo_len < 65) {
7853 config->tx_intr_type = TXD_INT_TYPE_PER_LIST;
7854 break;
7855 }
7856 }
7857 /* + 2 because one Txd for skb->data and one Txd for UFO */
7858 config->max_txds = MAX_SKB_FRAGS + 2;
7859
7860 /* Rx side parameters. */
7861 config->rx_ring_num = rx_ring_num;
7862 for (i = 0; i < config->rx_ring_num; i++) {
7863 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
7864 struct ring_info *ring = &mac_control->rings[i];
7865
7866 rx_cfg->num_rxd = rx_ring_sz[i] * (rxd_count[sp->rxd_mode] + 1);
7867 rx_cfg->ring_priority = i;
7868 ring->rx_bufs_left = 0;
7869 ring->rxd_mode = sp->rxd_mode;
7870 ring->rxd_count = rxd_count[sp->rxd_mode];
7871 ring->pdev = sp->pdev;
7872 ring->dev = sp->dev;
7873 }
7874
7875 for (i = 0; i < rx_ring_num; i++) {
7876 struct rx_ring_config *rx_cfg = &config->rx_cfg[i];
7877
7878 rx_cfg->ring_org = RING_ORG_BUFF1;
7879 rx_cfg->f_no_snoop = (NO_SNOOP_RXD | NO_SNOOP_RXD_BUFFER);
7880 }
7881
7882 /* Setting Mac Control parameters */
7883 mac_control->rmac_pause_time = rmac_pause_time;
7884 mac_control->mc_pause_threshold_q0q3 = mc_pause_threshold_q0q3;
7885 mac_control->mc_pause_threshold_q4q7 = mc_pause_threshold_q4q7;
7886
7887
7888 /* initialize the shared memory used by the NIC and the host */
7889 if (init_shared_mem(sp)) {
7890 DBG_PRINT(ERR_DBG, "%s: Memory allocation failed\n", dev->name);
7891 ret = -ENOMEM;
7892 goto mem_alloc_failed;
7893 }
7894
7895 sp->bar0 = pci_ioremap_bar(pdev, 0);
7896 if (!sp->bar0) {
7897 DBG_PRINT(ERR_DBG, "%s: Neterion: cannot remap io mem1\n",
7898 dev->name);
7899 ret = -ENOMEM;
7900 goto bar0_remap_failed;
7901 }
7902
7903 sp->bar1 = pci_ioremap_bar(pdev, 2);
7904 if (!sp->bar1) {
7905 DBG_PRINT(ERR_DBG, "%s: Neterion: cannot remap io mem2\n",
7906 dev->name);
7907 ret = -ENOMEM;
7908 goto bar1_remap_failed;
7909 }
7910
7911 dev->irq = pdev->irq;
7912 dev->base_addr = (unsigned long)sp->bar0;
7913
7914 /* Initializing the BAR1 address as the start of the FIFO pointer. */
7915 for (j = 0; j < MAX_TX_FIFOS; j++) {
7916 mac_control->tx_FIFO_start[j] = sp->bar1 + (j * 0x00020000);
7917 }
7918
7919 /* Driver entry points */
7920 dev->netdev_ops = &s2io_netdev_ops;
7921 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
7922 dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
7923 NETIF_F_TSO | NETIF_F_TSO6 |
7924 NETIF_F_RXCSUM | NETIF_F_LRO;
7925 dev->features |= dev->hw_features |
7926 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
7927 if (sp->device_type & XFRAME_II_DEVICE) {
7928 dev->hw_features |= NETIF_F_UFO;
7929 if (ufo)
7930 dev->features |= NETIF_F_UFO;
7931 }
7932 if (sp->high_dma_flag == true)
7933 dev->features |= NETIF_F_HIGHDMA;
7934 dev->watchdog_timeo = WATCH_DOG_TIMEOUT;
7935 INIT_WORK(&sp->rst_timer_task, s2io_restart_nic);
7936 INIT_WORK(&sp->set_link_task, s2io_set_link);
7937
7938 pci_save_state(sp->pdev);
7939
7940 /* Setting swapper control on the NIC, for proper reset operation */
7941 if (s2io_set_swapper(sp)) {
7942 DBG_PRINT(ERR_DBG, "%s: swapper settings are wrong\n",
7943 dev->name);
7944 ret = -EAGAIN;
7945 goto set_swap_failed;
7946 }
7947
7948 /* Verify if the Herc works on the slot its placed into */
7949 if (sp->device_type & XFRAME_II_DEVICE) {
7950 mode = s2io_verify_pci_mode(sp);
7951 if (mode < 0) {
7952 DBG_PRINT(ERR_DBG, "%s: Unsupported PCI bus mode\n",
7953 __func__);
7954 ret = -EBADSLT;
7955 goto set_swap_failed;
7956 }
7957 }
7958
7959 if (sp->config.intr_type == MSI_X) {
7960 sp->num_entries = config->rx_ring_num + 1;
7961 ret = s2io_enable_msi_x(sp);
7962
7963 if (!ret) {
7964 ret = s2io_test_msi(sp);
7965 /* rollback MSI-X, will re-enable during add_isr() */
7966 remove_msix_isr(sp);
7967 }
7968 if (ret) {
7969
7970 DBG_PRINT(ERR_DBG,
7971 "MSI-X requested but failed to enable\n");
7972 sp->config.intr_type = INTA;
7973 }
7974 }
7975
7976 if (config->intr_type == MSI_X) {
7977 for (i = 0; i < config->rx_ring_num ; i++) {
7978 struct ring_info *ring = &mac_control->rings[i];
7979
7980 netif_napi_add(dev, &ring->napi, s2io_poll_msix, 64);
7981 }
7982 } else {
7983 netif_napi_add(dev, &sp->napi, s2io_poll_inta, 64);
7984 }
7985
7986 /* Not needed for Herc */
7987 if (sp->device_type & XFRAME_I_DEVICE) {
7988 /*
7989 * Fix for all "FFs" MAC address problems observed on
7990 * Alpha platforms
7991 */
7992 fix_mac_address(sp);
7993 s2io_reset(sp);
7994 }
7995
7996 /*
7997 * MAC address initialization.
7998 * For now only one mac address will be read and used.
7999 */
8000 bar0 = sp->bar0;
8001 val64 = RMAC_ADDR_CMD_MEM_RD | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
8002 RMAC_ADDR_CMD_MEM_OFFSET(0 + S2IO_MAC_ADDR_START_OFFSET);
8003 writeq(val64, &bar0->rmac_addr_cmd_mem);
8004 wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
8005 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
8006 S2IO_BIT_RESET);
8007 tmp64 = readq(&bar0->rmac_addr_data0_mem);
8008 mac_down = (u32)tmp64;
8009 mac_up = (u32) (tmp64 >> 32);
8010
8011 sp->def_mac_addr[0].mac_addr[3] = (u8) (mac_up);
8012 sp->def_mac_addr[0].mac_addr[2] = (u8) (mac_up >> 8);
8013 sp->def_mac_addr[0].mac_addr[1] = (u8) (mac_up >> 16);
8014 sp->def_mac_addr[0].mac_addr[0] = (u8) (mac_up >> 24);
8015 sp->def_mac_addr[0].mac_addr[5] = (u8) (mac_down >> 16);
8016 sp->def_mac_addr[0].mac_addr[4] = (u8) (mac_down >> 24);
8017
8018 /* Set the factory defined MAC address initially */
8019 dev->addr_len = ETH_ALEN;
8020 memcpy(dev->dev_addr, sp->def_mac_addr, ETH_ALEN);
8021 memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN);
8022
8023 /* initialize number of multicast & unicast MAC entries variables */
8024 if (sp->device_type == XFRAME_I_DEVICE) {
8025 config->max_mc_addr = S2IO_XENA_MAX_MC_ADDRESSES;
8026 config->max_mac_addr = S2IO_XENA_MAX_MAC_ADDRESSES;
8027 config->mc_start_offset = S2IO_XENA_MC_ADDR_START_OFFSET;
8028 } else if (sp->device_type == XFRAME_II_DEVICE) {
8029 config->max_mc_addr = S2IO_HERC_MAX_MC_ADDRESSES;
8030 config->max_mac_addr = S2IO_HERC_MAX_MAC_ADDRESSES;
8031 config->mc_start_offset = S2IO_HERC_MC_ADDR_START_OFFSET;
8032 }
8033
8034 /* store mac addresses from CAM to s2io_nic structure */
8035 do_s2io_store_unicast_mc(sp);
8036
8037 /* Configure MSIX vector for number of rings configured plus one */
8038 if ((sp->device_type == XFRAME_II_DEVICE) &&
8039 (config->intr_type == MSI_X))
8040 sp->num_entries = config->rx_ring_num + 1;
8041
8042 /* Store the values of the MSIX table in the s2io_nic structure */
8043 store_xmsi_data(sp);
8044 /* reset Nic and bring it to known state */
8045 s2io_reset(sp);
8046
8047 /*
8048 * Initialize link state flags
8049 * and the card state parameter
8050 */
8051 sp->state = 0;
8052
8053 /* Initialize spinlocks */
8054 for (i = 0; i < sp->config.tx_fifo_num; i++) {
8055 struct fifo_info *fifo = &mac_control->fifos[i];
8056
8057 spin_lock_init(&fifo->tx_lock);
8058 }
8059
8060 /*
8061 * SXE-002: Configure link and activity LED to init state
8062 * on driver load.
8063 */
8064 subid = sp->pdev->subsystem_device;
8065 if ((subid & 0xFF) >= 0x07) {
8066 val64 = readq(&bar0->gpio_control);
8067 val64 |= 0x0000800000000000ULL;
8068 writeq(val64, &bar0->gpio_control);
8069 val64 = 0x0411040400000000ULL;
8070 writeq(val64, (void __iomem *)bar0 + 0x2700);
8071 val64 = readq(&bar0->gpio_control);
8072 }
8073
8074 sp->rx_csum = 1; /* Rx chksum verify enabled by default */
8075
8076 if (register_netdev(dev)) {
8077 DBG_PRINT(ERR_DBG, "Device registration failed\n");
8078 ret = -ENODEV;
8079 goto register_failed;
8080 }
8081 s2io_vpd_read(sp);
8082 DBG_PRINT(ERR_DBG, "Copyright(c) 2002-2010 Exar Corp.\n");
8083 DBG_PRINT(ERR_DBG, "%s: Neterion %s (rev %d)\n", dev->name,
8084 sp->product_name, pdev->revision);
8085 DBG_PRINT(ERR_DBG, "%s: Driver version %s\n", dev->name,
8086 s2io_driver_version);
8087 DBG_PRINT(ERR_DBG, "%s: MAC Address: %pM\n", dev->name, dev->dev_addr);
8088 DBG_PRINT(ERR_DBG, "Serial number: %s\n", sp->serial_num);
8089 if (sp->device_type & XFRAME_II_DEVICE) {
8090 mode = s2io_print_pci_mode(sp);
8091 if (mode < 0) {
8092 ret = -EBADSLT;
8093 unregister_netdev(dev);
8094 goto set_swap_failed;
8095 }
8096 }
8097 switch (sp->rxd_mode) {
8098 case RXD_MODE_1:
8099 DBG_PRINT(ERR_DBG, "%s: 1-Buffer receive mode enabled\n",
8100 dev->name);
8101 break;
8102 case RXD_MODE_3B:
8103 DBG_PRINT(ERR_DBG, "%s: 2-Buffer receive mode enabled\n",
8104 dev->name);
8105 break;
8106 }
8107
8108 switch (sp->config.napi) {
8109 case 0:
8110 DBG_PRINT(ERR_DBG, "%s: NAPI disabled\n", dev->name);
8111 break;
8112 case 1:
8113 DBG_PRINT(ERR_DBG, "%s: NAPI enabled\n", dev->name);
8114 break;
8115 }
8116
8117 DBG_PRINT(ERR_DBG, "%s: Using %d Tx fifo(s)\n", dev->name,
8118 sp->config.tx_fifo_num);
8119
8120 DBG_PRINT(ERR_DBG, "%s: Using %d Rx ring(s)\n", dev->name,
8121 sp->config.rx_ring_num);
8122
8123 switch (sp->config.intr_type) {
8124 case INTA:
8125 DBG_PRINT(ERR_DBG, "%s: Interrupt type INTA\n", dev->name);
8126 break;
8127 case MSI_X:
8128 DBG_PRINT(ERR_DBG, "%s: Interrupt type MSI-X\n", dev->name);
8129 break;
8130 }
8131 if (sp->config.multiq) {
8132 for (i = 0; i < sp->config.tx_fifo_num; i++) {
8133 struct fifo_info *fifo = &mac_control->fifos[i];
8134
8135 fifo->multiq = config->multiq;
8136 }
8137 DBG_PRINT(ERR_DBG, "%s: Multiqueue support enabled\n",
8138 dev->name);
8139 } else
8140 DBG_PRINT(ERR_DBG, "%s: Multiqueue support disabled\n",
8141 dev->name);
8142
8143 switch (sp->config.tx_steering_type) {
8144 case NO_STEERING:
8145 DBG_PRINT(ERR_DBG, "%s: No steering enabled for transmit\n",
8146 dev->name);
8147 break;
8148 case TX_PRIORITY_STEERING:
8149 DBG_PRINT(ERR_DBG,
8150 "%s: Priority steering enabled for transmit\n",
8151 dev->name);
8152 break;
8153 case TX_DEFAULT_STEERING:
8154 DBG_PRINT(ERR_DBG,
8155 "%s: Default steering enabled for transmit\n",
8156 dev->name);
8157 }
8158
8159 DBG_PRINT(ERR_DBG, "%s: Large receive offload enabled\n",
8160 dev->name);
8161 if (ufo)
8162 DBG_PRINT(ERR_DBG,
8163 "%s: UDP Fragmentation Offload(UFO) enabled\n",
8164 dev->name);
8165 /* Initialize device name */
8166 sprintf(sp->name, "%s Neterion %s", dev->name, sp->product_name);
8167
8168 if (vlan_tag_strip)
8169 sp->vlan_strip_flag = 1;
8170 else
8171 sp->vlan_strip_flag = 0;
8172
8173 /*
8174 * Make Link state as off at this point, when the Link change
8175 * interrupt comes the state will be automatically changed to
8176 * the right state.
8177 */
8178 netif_carrier_off(dev);
8179
8180 return 0;
8181
8182 register_failed:
8183 set_swap_failed:
8184 iounmap(sp->bar1);
8185 bar1_remap_failed:
8186 iounmap(sp->bar0);
8187 bar0_remap_failed:
8188 mem_alloc_failed:
8189 free_shared_mem(sp);
8190 pci_disable_device(pdev);
8191 pci_release_regions(pdev);
8192 pci_set_drvdata(pdev, NULL);
8193 free_netdev(dev);
8194
8195 return ret;
8196 }
8197
8198 /**
8199 * s2io_rem_nic - Free the PCI device
8200 * @pdev: structure containing the PCI related information of the device.
8201 * Description: This function is called by the Pci subsystem to release a
8202 * PCI device and free up all resource held up by the device. This could
8203 * be in response to a Hot plug event or when the driver is to be removed
8204 * from memory.
8205 */
8206
s2io_rem_nic(struct pci_dev * pdev)8207 static void __devexit s2io_rem_nic(struct pci_dev *pdev)
8208 {
8209 struct net_device *dev = pci_get_drvdata(pdev);
8210 struct s2io_nic *sp;
8211
8212 if (dev == NULL) {
8213 DBG_PRINT(ERR_DBG, "Driver Data is NULL!!\n");
8214 return;
8215 }
8216
8217 sp = netdev_priv(dev);
8218
8219 cancel_work_sync(&sp->rst_timer_task);
8220 cancel_work_sync(&sp->set_link_task);
8221
8222 unregister_netdev(dev);
8223
8224 free_shared_mem(sp);
8225 iounmap(sp->bar0);
8226 iounmap(sp->bar1);
8227 pci_release_regions(pdev);
8228 pci_set_drvdata(pdev, NULL);
8229 free_netdev(dev);
8230 pci_disable_device(pdev);
8231 }
8232
8233 /**
8234 * s2io_starter - Entry point for the driver
8235 * Description: This function is the entry point for the driver. It verifies
8236 * the module loadable parameters and initializes PCI configuration space.
8237 */
8238
s2io_starter(void)8239 static int __init s2io_starter(void)
8240 {
8241 return pci_register_driver(&s2io_driver);
8242 }
8243
8244 /**
8245 * s2io_closer - Cleanup routine for the driver
8246 * Description: This function is the cleanup routine for the driver. It unregist * ers the driver.
8247 */
8248
s2io_closer(void)8249 static __exit void s2io_closer(void)
8250 {
8251 pci_unregister_driver(&s2io_driver);
8252 DBG_PRINT(INIT_DBG, "cleanup done\n");
8253 }
8254
8255 module_init(s2io_starter);
8256 module_exit(s2io_closer);
8257
check_L2_lro_capable(u8 * buffer,struct iphdr ** ip,struct tcphdr ** tcp,struct RxD_t * rxdp,struct s2io_nic * sp)8258 static int check_L2_lro_capable(u8 *buffer, struct iphdr **ip,
8259 struct tcphdr **tcp, struct RxD_t *rxdp,
8260 struct s2io_nic *sp)
8261 {
8262 int ip_off;
8263 u8 l2_type = (u8)((rxdp->Control_1 >> 37) & 0x7), ip_len;
8264
8265 if (!(rxdp->Control_1 & RXD_FRAME_PROTO_TCP)) {
8266 DBG_PRINT(INIT_DBG,
8267 "%s: Non-TCP frames not supported for LRO\n",
8268 __func__);
8269 return -1;
8270 }
8271
8272 /* Checking for DIX type or DIX type with VLAN */
8273 if ((l2_type == 0) || (l2_type == 4)) {
8274 ip_off = HEADER_ETHERNET_II_802_3_SIZE;
8275 /*
8276 * If vlan stripping is disabled and the frame is VLAN tagged,
8277 * shift the offset by the VLAN header size bytes.
8278 */
8279 if ((!sp->vlan_strip_flag) &&
8280 (rxdp->Control_1 & RXD_FRAME_VLAN_TAG))
8281 ip_off += HEADER_VLAN_SIZE;
8282 } else {
8283 /* LLC, SNAP etc are considered non-mergeable */
8284 return -1;
8285 }
8286
8287 *ip = (struct iphdr *)((u8 *)buffer + ip_off);
8288 ip_len = (u8)((*ip)->ihl);
8289 ip_len <<= 2;
8290 *tcp = (struct tcphdr *)((unsigned long)*ip + ip_len);
8291
8292 return 0;
8293 }
8294
check_for_socket_match(struct lro * lro,struct iphdr * ip,struct tcphdr * tcp)8295 static int check_for_socket_match(struct lro *lro, struct iphdr *ip,
8296 struct tcphdr *tcp)
8297 {
8298 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8299 if ((lro->iph->saddr != ip->saddr) ||
8300 (lro->iph->daddr != ip->daddr) ||
8301 (lro->tcph->source != tcp->source) ||
8302 (lro->tcph->dest != tcp->dest))
8303 return -1;
8304 return 0;
8305 }
8306
get_l4_pyld_length(struct iphdr * ip,struct tcphdr * tcp)8307 static inline int get_l4_pyld_length(struct iphdr *ip, struct tcphdr *tcp)
8308 {
8309 return ntohs(ip->tot_len) - (ip->ihl << 2) - (tcp->doff << 2);
8310 }
8311
initiate_new_session(struct lro * lro,u8 * l2h,struct iphdr * ip,struct tcphdr * tcp,u32 tcp_pyld_len,u16 vlan_tag)8312 static void initiate_new_session(struct lro *lro, u8 *l2h,
8313 struct iphdr *ip, struct tcphdr *tcp,
8314 u32 tcp_pyld_len, u16 vlan_tag)
8315 {
8316 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8317 lro->l2h = l2h;
8318 lro->iph = ip;
8319 lro->tcph = tcp;
8320 lro->tcp_next_seq = tcp_pyld_len + ntohl(tcp->seq);
8321 lro->tcp_ack = tcp->ack_seq;
8322 lro->sg_num = 1;
8323 lro->total_len = ntohs(ip->tot_len);
8324 lro->frags_len = 0;
8325 lro->vlan_tag = vlan_tag;
8326 /*
8327 * Check if we saw TCP timestamp.
8328 * Other consistency checks have already been done.
8329 */
8330 if (tcp->doff == 8) {
8331 __be32 *ptr;
8332 ptr = (__be32 *)(tcp+1);
8333 lro->saw_ts = 1;
8334 lro->cur_tsval = ntohl(*(ptr+1));
8335 lro->cur_tsecr = *(ptr+2);
8336 }
8337 lro->in_use = 1;
8338 }
8339
update_L3L4_header(struct s2io_nic * sp,struct lro * lro)8340 static void update_L3L4_header(struct s2io_nic *sp, struct lro *lro)
8341 {
8342 struct iphdr *ip = lro->iph;
8343 struct tcphdr *tcp = lro->tcph;
8344 __sum16 nchk;
8345 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
8346
8347 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8348
8349 /* Update L3 header */
8350 ip->tot_len = htons(lro->total_len);
8351 ip->check = 0;
8352 nchk = ip_fast_csum((u8 *)lro->iph, ip->ihl);
8353 ip->check = nchk;
8354
8355 /* Update L4 header */
8356 tcp->ack_seq = lro->tcp_ack;
8357 tcp->window = lro->window;
8358
8359 /* Update tsecr field if this session has timestamps enabled */
8360 if (lro->saw_ts) {
8361 __be32 *ptr = (__be32 *)(tcp + 1);
8362 *(ptr+2) = lro->cur_tsecr;
8363 }
8364
8365 /* Update counters required for calculation of
8366 * average no. of packets aggregated.
8367 */
8368 swstats->sum_avg_pkts_aggregated += lro->sg_num;
8369 swstats->num_aggregations++;
8370 }
8371
aggregate_new_rx(struct lro * lro,struct iphdr * ip,struct tcphdr * tcp,u32 l4_pyld)8372 static void aggregate_new_rx(struct lro *lro, struct iphdr *ip,
8373 struct tcphdr *tcp, u32 l4_pyld)
8374 {
8375 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8376 lro->total_len += l4_pyld;
8377 lro->frags_len += l4_pyld;
8378 lro->tcp_next_seq += l4_pyld;
8379 lro->sg_num++;
8380
8381 /* Update ack seq no. and window ad(from this pkt) in LRO object */
8382 lro->tcp_ack = tcp->ack_seq;
8383 lro->window = tcp->window;
8384
8385 if (lro->saw_ts) {
8386 __be32 *ptr;
8387 /* Update tsecr and tsval from this packet */
8388 ptr = (__be32 *)(tcp+1);
8389 lro->cur_tsval = ntohl(*(ptr+1));
8390 lro->cur_tsecr = *(ptr + 2);
8391 }
8392 }
8393
verify_l3_l4_lro_capable(struct lro * l_lro,struct iphdr * ip,struct tcphdr * tcp,u32 tcp_pyld_len)8394 static int verify_l3_l4_lro_capable(struct lro *l_lro, struct iphdr *ip,
8395 struct tcphdr *tcp, u32 tcp_pyld_len)
8396 {
8397 u8 *ptr;
8398
8399 DBG_PRINT(INFO_DBG, "%s: Been here...\n", __func__);
8400
8401 if (!tcp_pyld_len) {
8402 /* Runt frame or a pure ack */
8403 return -1;
8404 }
8405
8406 if (ip->ihl != 5) /* IP has options */
8407 return -1;
8408
8409 /* If we see CE codepoint in IP header, packet is not mergeable */
8410 if (INET_ECN_is_ce(ipv4_get_dsfield(ip)))
8411 return -1;
8412
8413 /* If we see ECE or CWR flags in TCP header, packet is not mergeable */
8414 if (tcp->urg || tcp->psh || tcp->rst ||
8415 tcp->syn || tcp->fin ||
8416 tcp->ece || tcp->cwr || !tcp->ack) {
8417 /*
8418 * Currently recognize only the ack control word and
8419 * any other control field being set would result in
8420 * flushing the LRO session
8421 */
8422 return -1;
8423 }
8424
8425 /*
8426 * Allow only one TCP timestamp option. Don't aggregate if
8427 * any other options are detected.
8428 */
8429 if (tcp->doff != 5 && tcp->doff != 8)
8430 return -1;
8431
8432 if (tcp->doff == 8) {
8433 ptr = (u8 *)(tcp + 1);
8434 while (*ptr == TCPOPT_NOP)
8435 ptr++;
8436 if (*ptr != TCPOPT_TIMESTAMP || *(ptr+1) != TCPOLEN_TIMESTAMP)
8437 return -1;
8438
8439 /* Ensure timestamp value increases monotonically */
8440 if (l_lro)
8441 if (l_lro->cur_tsval > ntohl(*((__be32 *)(ptr+2))))
8442 return -1;
8443
8444 /* timestamp echo reply should be non-zero */
8445 if (*((__be32 *)(ptr+6)) == 0)
8446 return -1;
8447 }
8448
8449 return 0;
8450 }
8451
s2io_club_tcp_session(struct ring_info * ring_data,u8 * buffer,u8 ** tcp,u32 * tcp_len,struct lro ** lro,struct RxD_t * rxdp,struct s2io_nic * sp)8452 static int s2io_club_tcp_session(struct ring_info *ring_data, u8 *buffer,
8453 u8 **tcp, u32 *tcp_len, struct lro **lro,
8454 struct RxD_t *rxdp, struct s2io_nic *sp)
8455 {
8456 struct iphdr *ip;
8457 struct tcphdr *tcph;
8458 int ret = 0, i;
8459 u16 vlan_tag = 0;
8460 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
8461
8462 ret = check_L2_lro_capable(buffer, &ip, (struct tcphdr **)tcp,
8463 rxdp, sp);
8464 if (ret)
8465 return ret;
8466
8467 DBG_PRINT(INFO_DBG, "IP Saddr: %x Daddr: %x\n", ip->saddr, ip->daddr);
8468
8469 vlan_tag = RXD_GET_VLAN_TAG(rxdp->Control_2);
8470 tcph = (struct tcphdr *)*tcp;
8471 *tcp_len = get_l4_pyld_length(ip, tcph);
8472 for (i = 0; i < MAX_LRO_SESSIONS; i++) {
8473 struct lro *l_lro = &ring_data->lro0_n[i];
8474 if (l_lro->in_use) {
8475 if (check_for_socket_match(l_lro, ip, tcph))
8476 continue;
8477 /* Sock pair matched */
8478 *lro = l_lro;
8479
8480 if ((*lro)->tcp_next_seq != ntohl(tcph->seq)) {
8481 DBG_PRINT(INFO_DBG, "%s: Out of sequence. "
8482 "expected 0x%x, actual 0x%x\n",
8483 __func__,
8484 (*lro)->tcp_next_seq,
8485 ntohl(tcph->seq));
8486
8487 swstats->outof_sequence_pkts++;
8488 ret = 2;
8489 break;
8490 }
8491
8492 if (!verify_l3_l4_lro_capable(l_lro, ip, tcph,
8493 *tcp_len))
8494 ret = 1; /* Aggregate */
8495 else
8496 ret = 2; /* Flush both */
8497 break;
8498 }
8499 }
8500
8501 if (ret == 0) {
8502 /* Before searching for available LRO objects,
8503 * check if the pkt is L3/L4 aggregatable. If not
8504 * don't create new LRO session. Just send this
8505 * packet up.
8506 */
8507 if (verify_l3_l4_lro_capable(NULL, ip, tcph, *tcp_len))
8508 return 5;
8509
8510 for (i = 0; i < MAX_LRO_SESSIONS; i++) {
8511 struct lro *l_lro = &ring_data->lro0_n[i];
8512 if (!(l_lro->in_use)) {
8513 *lro = l_lro;
8514 ret = 3; /* Begin anew */
8515 break;
8516 }
8517 }
8518 }
8519
8520 if (ret == 0) { /* sessions exceeded */
8521 DBG_PRINT(INFO_DBG, "%s: All LRO sessions already in use\n",
8522 __func__);
8523 *lro = NULL;
8524 return ret;
8525 }
8526
8527 switch (ret) {
8528 case 3:
8529 initiate_new_session(*lro, buffer, ip, tcph, *tcp_len,
8530 vlan_tag);
8531 break;
8532 case 2:
8533 update_L3L4_header(sp, *lro);
8534 break;
8535 case 1:
8536 aggregate_new_rx(*lro, ip, tcph, *tcp_len);
8537 if ((*lro)->sg_num == sp->lro_max_aggr_per_sess) {
8538 update_L3L4_header(sp, *lro);
8539 ret = 4; /* Flush the LRO */
8540 }
8541 break;
8542 default:
8543 DBG_PRINT(ERR_DBG, "%s: Don't know, can't say!!\n", __func__);
8544 break;
8545 }
8546
8547 return ret;
8548 }
8549
clear_lro_session(struct lro * lro)8550 static void clear_lro_session(struct lro *lro)
8551 {
8552 static u16 lro_struct_size = sizeof(struct lro);
8553
8554 memset(lro, 0, lro_struct_size);
8555 }
8556
queue_rx_frame(struct sk_buff * skb,u16 vlan_tag)8557 static void queue_rx_frame(struct sk_buff *skb, u16 vlan_tag)
8558 {
8559 struct net_device *dev = skb->dev;
8560 struct s2io_nic *sp = netdev_priv(dev);
8561
8562 skb->protocol = eth_type_trans(skb, dev);
8563 if (vlan_tag && sp->vlan_strip_flag)
8564 __vlan_hwaccel_put_tag(skb, vlan_tag);
8565 if (sp->config.napi)
8566 netif_receive_skb(skb);
8567 else
8568 netif_rx(skb);
8569 }
8570
lro_append_pkt(struct s2io_nic * sp,struct lro * lro,struct sk_buff * skb,u32 tcp_len)8571 static void lro_append_pkt(struct s2io_nic *sp, struct lro *lro,
8572 struct sk_buff *skb, u32 tcp_len)
8573 {
8574 struct sk_buff *first = lro->parent;
8575 struct swStat *swstats = &sp->mac_control.stats_info->sw_stat;
8576
8577 first->len += tcp_len;
8578 first->data_len = lro->frags_len;
8579 skb_pull(skb, (skb->len - tcp_len));
8580 if (skb_shinfo(first)->frag_list)
8581 lro->last_frag->next = skb;
8582 else
8583 skb_shinfo(first)->frag_list = skb;
8584 first->truesize += skb->truesize;
8585 lro->last_frag = skb;
8586 swstats->clubbed_frms_cnt++;
8587 }
8588
8589 /**
8590 * s2io_io_error_detected - called when PCI error is detected
8591 * @pdev: Pointer to PCI device
8592 * @state: The current pci connection state
8593 *
8594 * This function is called after a PCI bus error affecting
8595 * this device has been detected.
8596 */
s2io_io_error_detected(struct pci_dev * pdev,pci_channel_state_t state)8597 static pci_ers_result_t s2io_io_error_detected(struct pci_dev *pdev,
8598 pci_channel_state_t state)
8599 {
8600 struct net_device *netdev = pci_get_drvdata(pdev);
8601 struct s2io_nic *sp = netdev_priv(netdev);
8602
8603 netif_device_detach(netdev);
8604
8605 if (state == pci_channel_io_perm_failure)
8606 return PCI_ERS_RESULT_DISCONNECT;
8607
8608 if (netif_running(netdev)) {
8609 /* Bring down the card, while avoiding PCI I/O */
8610 do_s2io_card_down(sp, 0);
8611 }
8612 pci_disable_device(pdev);
8613
8614 return PCI_ERS_RESULT_NEED_RESET;
8615 }
8616
8617 /**
8618 * s2io_io_slot_reset - called after the pci bus has been reset.
8619 * @pdev: Pointer to PCI device
8620 *
8621 * Restart the card from scratch, as if from a cold-boot.
8622 * At this point, the card has exprienced a hard reset,
8623 * followed by fixups by BIOS, and has its config space
8624 * set up identically to what it was at cold boot.
8625 */
s2io_io_slot_reset(struct pci_dev * pdev)8626 static pci_ers_result_t s2io_io_slot_reset(struct pci_dev *pdev)
8627 {
8628 struct net_device *netdev = pci_get_drvdata(pdev);
8629 struct s2io_nic *sp = netdev_priv(netdev);
8630
8631 if (pci_enable_device(pdev)) {
8632 pr_err("Cannot re-enable PCI device after reset.\n");
8633 return PCI_ERS_RESULT_DISCONNECT;
8634 }
8635
8636 pci_set_master(pdev);
8637 s2io_reset(sp);
8638
8639 return PCI_ERS_RESULT_RECOVERED;
8640 }
8641
8642 /**
8643 * s2io_io_resume - called when traffic can start flowing again.
8644 * @pdev: Pointer to PCI device
8645 *
8646 * This callback is called when the error recovery driver tells
8647 * us that its OK to resume normal operation.
8648 */
s2io_io_resume(struct pci_dev * pdev)8649 static void s2io_io_resume(struct pci_dev *pdev)
8650 {
8651 struct net_device *netdev = pci_get_drvdata(pdev);
8652 struct s2io_nic *sp = netdev_priv(netdev);
8653
8654 if (netif_running(netdev)) {
8655 if (s2io_card_up(sp)) {
8656 pr_err("Can't bring device back up after reset.\n");
8657 return;
8658 }
8659
8660 if (s2io_set_mac_addr(netdev, netdev->dev_addr) == FAILURE) {
8661 s2io_card_down(sp);
8662 pr_err("Can't restore mac addr after reset.\n");
8663 return;
8664 }
8665 }
8666
8667 netif_device_attach(netdev);
8668 netif_tx_wake_all_queues(netdev);
8669 }
8670