1 /************************************************************************
2 * s2io.c: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC
3 * Copyright(c) 2002-2007 Neterion Inc.
5 * This software may be used and distributed according to the terms of
6 * the GNU General Public License (GPL), incorporated herein by reference.
7 * Drivers based on or derived from this code fall under the GPL and must
8 * retain the authorship, copyright and license notice. This file is not
9 * a complete program and may only be used when the entire operating
10 * system is licensed under the GPL.
11 * See the file COPYING in this distribution for more information.
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
25 * Christopher Hellwig : Some more 2.6 specific issues in the driver.
27 * The module loadable parameters that are supported by the driver and a brief
28 * explaination of all the variables.
30 * rx_ring_num : This can be used to program the number of receive rings used
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
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_enable: Specifies whether to enable Large Receive Offload (LRO) or not.
42 * Possible values '1' for enable '0' for disable. Default is '0'
43 * lro_max_pkts: This parameter defines maximum number of packets can be
44 * aggregated as a single large packet
45 * napi: This parameter used to enable/disable NAPI (polling Rx)
46 * Possible values '1' for enable and '0' for disable. Default is '1'
47 * ufo: This parameter used to enable/disable UDP Fragmentation Offload(UFO)
48 * Possible values '1' for enable and '0' for disable. Default is '0'
49 * vlan_tag_strip: This can be used to enable or disable vlan stripping.
50 * Possible values '1' for enable , '0' for disable.
51 * Default is '2' - which means disable in promisc mode
52 * and enable in non-promiscuous mode.
53 ************************************************************************/
55 #include <linux/module.h>
56 #include <linux/types.h>
57 #include <linux/errno.h>
58 #include <linux/ioport.h>
59 #include <linux/pci.h>
60 #include <linux/dma-mapping.h>
61 #include <linux/kernel.h>
62 #include <linux/netdevice.h>
63 #include <linux/etherdevice.h>
64 #include <linux/skbuff.h>
65 #include <linux/init.h>
66 #include <linux/delay.h>
67 #include <linux/stddef.h>
68 #include <linux/ioctl.h>
69 #include <linux/timex.h>
70 #include <linux/ethtool.h>
71 #include <linux/workqueue.h>
72 #include <linux/if_vlan.h>
74 #include <linux/tcp.h>
77 #include <asm/system.h>
78 #include <asm/uaccess.h>
80 #include <asm/div64.h>
85 #include "s2io-regs.h"
87 #define DRV_VERSION "2.0.26.17"
89 /* S2io Driver name & version. */
90 static char s2io_driver_name[] = "Neterion";
91 static char s2io_driver_version[] = DRV_VERSION;
93 static int rxd_size[2] = {32,48};
94 static int rxd_count[2] = {127,85};
96 static inline int RXD_IS_UP2DT(struct RxD_t *rxdp)
100 ret = ((!(rxdp->Control_1 & RXD_OWN_XENA)) &&
101 (GET_RXD_MARKER(rxdp->Control_2) != THE_RXD_MARK));
107 * Cards with following subsystem_id have a link state indication
108 * problem, 600B, 600C, 600D, 640B, 640C and 640D.
109 * macro below identifies these cards given the subsystem_id.
111 #define CARDS_WITH_FAULTY_LINK_INDICATORS(dev_type, subid) \
112 (dev_type == XFRAME_I_DEVICE) ? \
113 ((((subid >= 0x600B) && (subid <= 0x600D)) || \
114 ((subid >= 0x640B) && (subid <= 0x640D))) ? 1 : 0) : 0
116 #define LINK_IS_UP(val64) (!(val64 & (ADAPTER_STATUS_RMAC_REMOTE_FAULT | \
117 ADAPTER_STATUS_RMAC_LOCAL_FAULT)))
118 #define TASKLET_IN_USE test_and_set_bit(0, (&sp->tasklet_status))
121 static inline int rx_buffer_level(struct s2io_nic * sp, int rxb_size, int ring)
123 struct mac_info *mac_control;
125 mac_control = &sp->mac_control;
126 if (rxb_size <= rxd_count[sp->rxd_mode])
128 else if ((mac_control->rings[ring].pkt_cnt - rxb_size) > 16)
133 static inline int is_s2io_card_up(const struct s2io_nic * sp)
135 return test_bit(__S2IO_STATE_CARD_UP, &sp->state);
138 /* Ethtool related variables and Macros. */
139 static char s2io_gstrings[][ETH_GSTRING_LEN] = {
140 "Register test\t(offline)",
141 "Eeprom test\t(offline)",
142 "Link test\t(online)",
143 "RLDRAM test\t(offline)",
144 "BIST Test\t(offline)"
147 static char ethtool_xena_stats_keys[][ETH_GSTRING_LEN] = {
149 {"tmac_data_octets"},
153 {"tmac_pause_ctrl_frms"},
157 {"tmac_any_err_frms"},
158 {"tmac_ttl_less_fb_octets"},
159 {"tmac_vld_ip_octets"},
167 {"rmac_data_octets"},
168 {"rmac_fcs_err_frms"},
170 {"rmac_vld_mcst_frms"},
171 {"rmac_vld_bcst_frms"},
172 {"rmac_in_rng_len_err_frms"},
173 {"rmac_out_rng_len_err_frms"},
175 {"rmac_pause_ctrl_frms"},
176 {"rmac_unsup_ctrl_frms"},
178 {"rmac_accepted_ucst_frms"},
179 {"rmac_accepted_nucst_frms"},
180 {"rmac_discarded_frms"},
181 {"rmac_drop_events"},
182 {"rmac_ttl_less_fb_octets"},
184 {"rmac_usized_frms"},
185 {"rmac_osized_frms"},
187 {"rmac_jabber_frms"},
188 {"rmac_ttl_64_frms"},
189 {"rmac_ttl_65_127_frms"},
190 {"rmac_ttl_128_255_frms"},
191 {"rmac_ttl_256_511_frms"},
192 {"rmac_ttl_512_1023_frms"},
193 {"rmac_ttl_1024_1518_frms"},
201 {"rmac_err_drp_udp"},
202 {"rmac_xgmii_err_sym"},
220 {"rmac_xgmii_data_err_cnt"},
221 {"rmac_xgmii_ctrl_err_cnt"},
222 {"rmac_accepted_ip"},
226 {"new_rd_req_rtry_cnt"},
228 {"wr_rtry_rd_ack_cnt"},
231 {"new_wr_req_rtry_cnt"},
234 {"rd_rtry_wr_ack_cnt"},
244 static char ethtool_enhanced_stats_keys[][ETH_GSTRING_LEN] = {
245 {"rmac_ttl_1519_4095_frms"},
246 {"rmac_ttl_4096_8191_frms"},
247 {"rmac_ttl_8192_max_frms"},
248 {"rmac_ttl_gt_max_frms"},
249 {"rmac_osized_alt_frms"},
250 {"rmac_jabber_alt_frms"},
251 {"rmac_gt_max_alt_frms"},
253 {"rmac_len_discard"},
254 {"rmac_fcs_discard"},
257 {"rmac_red_discard"},
258 {"rmac_rts_discard"},
259 {"rmac_ingm_full_discard"},
263 static char ethtool_driver_stats_keys[][ETH_GSTRING_LEN] = {
264 {"\n DRIVER STATISTICS"},
265 {"single_bit_ecc_errs"},
266 {"double_bit_ecc_errs"},
279 {"alarm_transceiver_temp_high"},
280 {"alarm_transceiver_temp_low"},
281 {"alarm_laser_bias_current_high"},
282 {"alarm_laser_bias_current_low"},
283 {"alarm_laser_output_power_high"},
284 {"alarm_laser_output_power_low"},
285 {"warn_transceiver_temp_high"},
286 {"warn_transceiver_temp_low"},
287 {"warn_laser_bias_current_high"},
288 {"warn_laser_bias_current_low"},
289 {"warn_laser_output_power_high"},
290 {"warn_laser_output_power_low"},
291 {"lro_aggregated_pkts"},
292 {"lro_flush_both_count"},
293 {"lro_out_of_sequence_pkts"},
294 {"lro_flush_due_to_max_pkts"},
295 {"lro_avg_aggr_pkts"},
296 {"mem_alloc_fail_cnt"},
297 {"pci_map_fail_cnt"},
298 {"watchdog_timer_cnt"},
305 {"tx_tcode_buf_abort_cnt"},
306 {"tx_tcode_desc_abort_cnt"},
307 {"tx_tcode_parity_err_cnt"},
308 {"tx_tcode_link_loss_cnt"},
309 {"tx_tcode_list_proc_err_cnt"},
310 {"rx_tcode_parity_err_cnt"},
311 {"rx_tcode_abort_cnt"},
312 {"rx_tcode_parity_abort_cnt"},
313 {"rx_tcode_rda_fail_cnt"},
314 {"rx_tcode_unkn_prot_cnt"},
315 {"rx_tcode_fcs_err_cnt"},
316 {"rx_tcode_buf_size_err_cnt"},
317 {"rx_tcode_rxd_corrupt_cnt"},
318 {"rx_tcode_unkn_err_cnt"},
326 {"mac_tmac_err_cnt"},
327 {"mac_rmac_err_cnt"},
328 {"xgxs_txgxs_err_cnt"},
329 {"xgxs_rxgxs_err_cnt"},
331 {"prc_pcix_err_cnt"},
338 #define S2IO_XENA_STAT_LEN sizeof(ethtool_xena_stats_keys)/ ETH_GSTRING_LEN
339 #define S2IO_ENHANCED_STAT_LEN sizeof(ethtool_enhanced_stats_keys)/ \
341 #define S2IO_DRIVER_STAT_LEN sizeof(ethtool_driver_stats_keys)/ ETH_GSTRING_LEN
343 #define XFRAME_I_STAT_LEN (S2IO_XENA_STAT_LEN + S2IO_DRIVER_STAT_LEN )
344 #define XFRAME_II_STAT_LEN (XFRAME_I_STAT_LEN + S2IO_ENHANCED_STAT_LEN )
346 #define XFRAME_I_STAT_STRINGS_LEN ( XFRAME_I_STAT_LEN * ETH_GSTRING_LEN )
347 #define XFRAME_II_STAT_STRINGS_LEN ( XFRAME_II_STAT_LEN * ETH_GSTRING_LEN )
349 #define S2IO_TEST_LEN sizeof(s2io_gstrings) / ETH_GSTRING_LEN
350 #define S2IO_STRINGS_LEN S2IO_TEST_LEN * ETH_GSTRING_LEN
352 #define S2IO_TIMER_CONF(timer, handle, arg, exp) \
353 init_timer(&timer); \
354 timer.function = handle; \
355 timer.data = (unsigned long) arg; \
356 mod_timer(&timer, (jiffies + exp)) \
358 /* copy mac addr to def_mac_addr array */
359 static void do_s2io_copy_mac_addr(struct s2io_nic *sp, int offset, u64 mac_addr)
361 sp->def_mac_addr[offset].mac_addr[5] = (u8) (mac_addr);
362 sp->def_mac_addr[offset].mac_addr[4] = (u8) (mac_addr >> 8);
363 sp->def_mac_addr[offset].mac_addr[3] = (u8) (mac_addr >> 16);
364 sp->def_mac_addr[offset].mac_addr[2] = (u8) (mac_addr >> 24);
365 sp->def_mac_addr[offset].mac_addr[1] = (u8) (mac_addr >> 32);
366 sp->def_mac_addr[offset].mac_addr[0] = (u8) (mac_addr >> 40);
369 static void s2io_vlan_rx_register(struct net_device *dev,
370 struct vlan_group *grp)
372 struct s2io_nic *nic = dev->priv;
375 spin_lock_irqsave(&nic->tx_lock, flags);
377 spin_unlock_irqrestore(&nic->tx_lock, flags);
380 /* A flag indicating whether 'RX_PA_CFG_STRIP_VLAN_TAG' bit is set or not */
381 static int vlan_strip_flag;
384 * Constants to be programmed into the Xena's registers, to configure
389 static const u64 herc_act_dtx_cfg[] = {
391 0x8000051536750000ULL, 0x80000515367500E0ULL,
393 0x8000051536750004ULL, 0x80000515367500E4ULL,
395 0x80010515003F0000ULL, 0x80010515003F00E0ULL,
397 0x80010515003F0004ULL, 0x80010515003F00E4ULL,
399 0x801205150D440000ULL, 0x801205150D4400E0ULL,
401 0x801205150D440004ULL, 0x801205150D4400E4ULL,
403 0x80020515F2100000ULL, 0x80020515F21000E0ULL,
405 0x80020515F2100004ULL, 0x80020515F21000E4ULL,
410 static const u64 xena_dtx_cfg[] = {
412 0x8000051500000000ULL, 0x80000515000000E0ULL,
414 0x80000515D9350004ULL, 0x80000515D93500E4ULL,
416 0x8001051500000000ULL, 0x80010515000000E0ULL,
418 0x80010515001E0004ULL, 0x80010515001E00E4ULL,
420 0x8002051500000000ULL, 0x80020515000000E0ULL,
422 0x80020515F2100004ULL, 0x80020515F21000E4ULL,
427 * Constants for Fixing the MacAddress problem seen mostly on
430 static const u64 fix_mac[] = {
431 0x0060000000000000ULL, 0x0060600000000000ULL,
432 0x0040600000000000ULL, 0x0000600000000000ULL,
433 0x0020600000000000ULL, 0x0060600000000000ULL,
434 0x0020600000000000ULL, 0x0060600000000000ULL,
435 0x0020600000000000ULL, 0x0060600000000000ULL,
436 0x0020600000000000ULL, 0x0060600000000000ULL,
437 0x0020600000000000ULL, 0x0060600000000000ULL,
438 0x0020600000000000ULL, 0x0060600000000000ULL,
439 0x0020600000000000ULL, 0x0060600000000000ULL,
440 0x0020600000000000ULL, 0x0060600000000000ULL,
441 0x0020600000000000ULL, 0x0060600000000000ULL,
442 0x0020600000000000ULL, 0x0060600000000000ULL,
443 0x0020600000000000ULL, 0x0000600000000000ULL,
444 0x0040600000000000ULL, 0x0060600000000000ULL,
448 MODULE_LICENSE("GPL");
449 MODULE_VERSION(DRV_VERSION);
452 /* Module Loadable parameters. */
453 S2IO_PARM_INT(tx_fifo_num, 1);
454 S2IO_PARM_INT(rx_ring_num, 1);
457 S2IO_PARM_INT(rx_ring_mode, 1);
458 S2IO_PARM_INT(use_continuous_tx_intrs, 1);
459 S2IO_PARM_INT(rmac_pause_time, 0x100);
460 S2IO_PARM_INT(mc_pause_threshold_q0q3, 187);
461 S2IO_PARM_INT(mc_pause_threshold_q4q7, 187);
462 S2IO_PARM_INT(shared_splits, 0);
463 S2IO_PARM_INT(tmac_util_period, 5);
464 S2IO_PARM_INT(rmac_util_period, 5);
465 S2IO_PARM_INT(l3l4hdr_size, 128);
466 /* Frequency of Rx desc syncs expressed as power of 2 */
467 S2IO_PARM_INT(rxsync_frequency, 3);
468 /* Interrupt type. Values can be 0(INTA), 2(MSI_X) */
469 S2IO_PARM_INT(intr_type, 2);
470 /* Large receive offload feature */
471 static unsigned int lro_enable;
472 module_param_named(lro, lro_enable, uint, 0);
474 /* Max pkts to be aggregated by LRO at one time. If not specified,
475 * aggregation happens until we hit max IP pkt size(64K)
477 S2IO_PARM_INT(lro_max_pkts, 0xFFFF);
478 S2IO_PARM_INT(indicate_max_pkts, 0);
480 S2IO_PARM_INT(napi, 1);
481 S2IO_PARM_INT(ufo, 0);
482 S2IO_PARM_INT(vlan_tag_strip, NO_STRIP_IN_PROMISC);
484 static unsigned int tx_fifo_len[MAX_TX_FIFOS] =
485 {DEFAULT_FIFO_0_LEN, [1 ...(MAX_TX_FIFOS - 1)] = DEFAULT_FIFO_1_7_LEN};
486 static unsigned int rx_ring_sz[MAX_RX_RINGS] =
487 {[0 ...(MAX_RX_RINGS - 1)] = SMALL_BLK_CNT};
488 static unsigned int rts_frm_len[MAX_RX_RINGS] =
489 {[0 ...(MAX_RX_RINGS - 1)] = 0 };
491 module_param_array(tx_fifo_len, uint, NULL, 0);
492 module_param_array(rx_ring_sz, uint, NULL, 0);
493 module_param_array(rts_frm_len, uint, NULL, 0);
497 * This table lists all the devices that this driver supports.
499 static struct pci_device_id s2io_tbl[] __devinitdata = {
500 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_S2IO_WIN,
501 PCI_ANY_ID, PCI_ANY_ID},
502 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_S2IO_UNI,
503 PCI_ANY_ID, PCI_ANY_ID},
504 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_HERC_WIN,
505 PCI_ANY_ID, PCI_ANY_ID},
506 {PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_HERC_UNI,
507 PCI_ANY_ID, PCI_ANY_ID},
511 MODULE_DEVICE_TABLE(pci, s2io_tbl);
513 static struct pci_error_handlers s2io_err_handler = {
514 .error_detected = s2io_io_error_detected,
515 .slot_reset = s2io_io_slot_reset,
516 .resume = s2io_io_resume,
519 static struct pci_driver s2io_driver = {
521 .id_table = s2io_tbl,
522 .probe = s2io_init_nic,
523 .remove = __devexit_p(s2io_rem_nic),
524 .err_handler = &s2io_err_handler,
527 /* A simplifier macro used both by init and free shared_mem Fns(). */
528 #define TXD_MEM_PAGE_CNT(len, per_each) ((len+per_each - 1) / per_each)
531 * init_shared_mem - Allocation and Initialization of Memory
532 * @nic: Device private variable.
533 * Description: The function allocates all the memory areas shared
534 * between the NIC and the driver. This includes Tx descriptors,
535 * Rx descriptors and the statistics block.
538 static int init_shared_mem(struct s2io_nic *nic)
541 void *tmp_v_addr, *tmp_v_addr_next;
542 dma_addr_t tmp_p_addr, tmp_p_addr_next;
543 struct RxD_block *pre_rxd_blk = NULL;
545 int lst_size, lst_per_page;
546 struct net_device *dev = nic->dev;
550 struct mac_info *mac_control;
551 struct config_param *config;
552 unsigned long long mem_allocated = 0;
554 mac_control = &nic->mac_control;
555 config = &nic->config;
558 /* Allocation and initialization of TXDLs in FIOFs */
560 for (i = 0; i < config->tx_fifo_num; i++) {
561 size += config->tx_cfg[i].fifo_len;
563 if (size > MAX_AVAILABLE_TXDS) {
564 DBG_PRINT(ERR_DBG, "s2io: Requested TxDs too high, ");
565 DBG_PRINT(ERR_DBG, "Requested: %d, max supported: 8192\n", size);
569 lst_size = (sizeof(struct TxD) * config->max_txds);
570 lst_per_page = PAGE_SIZE / lst_size;
572 for (i = 0; i < config->tx_fifo_num; i++) {
573 int fifo_len = config->tx_cfg[i].fifo_len;
574 int list_holder_size = fifo_len * sizeof(struct list_info_hold);
575 mac_control->fifos[i].list_info = kzalloc(list_holder_size,
577 if (!mac_control->fifos[i].list_info) {
579 "Malloc failed for list_info\n");
582 mem_allocated += list_holder_size;
584 for (i = 0; i < config->tx_fifo_num; i++) {
585 int page_num = TXD_MEM_PAGE_CNT(config->tx_cfg[i].fifo_len,
587 mac_control->fifos[i].tx_curr_put_info.offset = 0;
588 mac_control->fifos[i].tx_curr_put_info.fifo_len =
589 config->tx_cfg[i].fifo_len - 1;
590 mac_control->fifos[i].tx_curr_get_info.offset = 0;
591 mac_control->fifos[i].tx_curr_get_info.fifo_len =
592 config->tx_cfg[i].fifo_len - 1;
593 mac_control->fifos[i].fifo_no = i;
594 mac_control->fifos[i].nic = nic;
595 mac_control->fifos[i].max_txds = MAX_SKB_FRAGS + 2;
597 for (j = 0; j < page_num; j++) {
601 tmp_v = pci_alloc_consistent(nic->pdev,
605 "pci_alloc_consistent ");
606 DBG_PRINT(INFO_DBG, "failed for TxDL\n");
609 /* If we got a zero DMA address(can happen on
610 * certain platforms like PPC), reallocate.
611 * Store virtual address of page we don't want,
615 mac_control->zerodma_virt_addr = tmp_v;
617 "%s: Zero DMA address for TxDL. ", dev->name);
619 "Virtual address %p\n", tmp_v);
620 tmp_v = pci_alloc_consistent(nic->pdev,
624 "pci_alloc_consistent ");
625 DBG_PRINT(INFO_DBG, "failed for TxDL\n");
628 mem_allocated += PAGE_SIZE;
630 while (k < lst_per_page) {
631 int l = (j * lst_per_page) + k;
632 if (l == config->tx_cfg[i].fifo_len)
634 mac_control->fifos[i].list_info[l].list_virt_addr =
635 tmp_v + (k * lst_size);
636 mac_control->fifos[i].list_info[l].list_phy_addr =
637 tmp_p + (k * lst_size);
643 nic->ufo_in_band_v = kcalloc(size, sizeof(u64), GFP_KERNEL);
644 if (!nic->ufo_in_band_v)
646 mem_allocated += (size * sizeof(u64));
648 /* Allocation and initialization of RXDs in Rings */
650 for (i = 0; i < config->rx_ring_num; i++) {
651 if (config->rx_cfg[i].num_rxd %
652 (rxd_count[nic->rxd_mode] + 1)) {
653 DBG_PRINT(ERR_DBG, "%s: RxD count of ", dev->name);
654 DBG_PRINT(ERR_DBG, "Ring%d is not a multiple of ",
656 DBG_PRINT(ERR_DBG, "RxDs per Block");
659 size += config->rx_cfg[i].num_rxd;
660 mac_control->rings[i].block_count =
661 config->rx_cfg[i].num_rxd /
662 (rxd_count[nic->rxd_mode] + 1 );
663 mac_control->rings[i].pkt_cnt = config->rx_cfg[i].num_rxd -
664 mac_control->rings[i].block_count;
666 if (nic->rxd_mode == RXD_MODE_1)
667 size = (size * (sizeof(struct RxD1)));
669 size = (size * (sizeof(struct RxD3)));
671 for (i = 0; i < config->rx_ring_num; i++) {
672 mac_control->rings[i].rx_curr_get_info.block_index = 0;
673 mac_control->rings[i].rx_curr_get_info.offset = 0;
674 mac_control->rings[i].rx_curr_get_info.ring_len =
675 config->rx_cfg[i].num_rxd - 1;
676 mac_control->rings[i].rx_curr_put_info.block_index = 0;
677 mac_control->rings[i].rx_curr_put_info.offset = 0;
678 mac_control->rings[i].rx_curr_put_info.ring_len =
679 config->rx_cfg[i].num_rxd - 1;
680 mac_control->rings[i].nic = nic;
681 mac_control->rings[i].ring_no = i;
683 blk_cnt = config->rx_cfg[i].num_rxd /
684 (rxd_count[nic->rxd_mode] + 1);
685 /* Allocating all the Rx blocks */
686 for (j = 0; j < blk_cnt; j++) {
687 struct rx_block_info *rx_blocks;
690 rx_blocks = &mac_control->rings[i].rx_blocks[j];
691 size = SIZE_OF_BLOCK; //size is always page size
692 tmp_v_addr = pci_alloc_consistent(nic->pdev, size,
694 if (tmp_v_addr == NULL) {
696 * In case of failure, free_shared_mem()
697 * is called, which should free any
698 * memory that was alloced till the
701 rx_blocks->block_virt_addr = tmp_v_addr;
704 mem_allocated += size;
705 memset(tmp_v_addr, 0, size);
706 rx_blocks->block_virt_addr = tmp_v_addr;
707 rx_blocks->block_dma_addr = tmp_p_addr;
708 rx_blocks->rxds = kmalloc(sizeof(struct rxd_info)*
709 rxd_count[nic->rxd_mode],
711 if (!rx_blocks->rxds)
714 (sizeof(struct rxd_info)* rxd_count[nic->rxd_mode]);
715 for (l=0; l<rxd_count[nic->rxd_mode];l++) {
716 rx_blocks->rxds[l].virt_addr =
717 rx_blocks->block_virt_addr +
718 (rxd_size[nic->rxd_mode] * l);
719 rx_blocks->rxds[l].dma_addr =
720 rx_blocks->block_dma_addr +
721 (rxd_size[nic->rxd_mode] * l);
724 /* Interlinking all Rx Blocks */
725 for (j = 0; j < blk_cnt; j++) {
727 mac_control->rings[i].rx_blocks[j].block_virt_addr;
729 mac_control->rings[i].rx_blocks[(j + 1) %
730 blk_cnt].block_virt_addr;
732 mac_control->rings[i].rx_blocks[j].block_dma_addr;
734 mac_control->rings[i].rx_blocks[(j + 1) %
735 blk_cnt].block_dma_addr;
737 pre_rxd_blk = (struct RxD_block *) tmp_v_addr;
738 pre_rxd_blk->reserved_2_pNext_RxD_block =
739 (unsigned long) tmp_v_addr_next;
740 pre_rxd_blk->pNext_RxD_Blk_physical =
741 (u64) tmp_p_addr_next;
744 if (nic->rxd_mode == RXD_MODE_3B) {
746 * Allocation of Storages for buffer addresses in 2BUFF mode
747 * and the buffers as well.
749 for (i = 0; i < config->rx_ring_num; i++) {
750 blk_cnt = config->rx_cfg[i].num_rxd /
751 (rxd_count[nic->rxd_mode]+ 1);
752 mac_control->rings[i].ba =
753 kmalloc((sizeof(struct buffAdd *) * blk_cnt),
755 if (!mac_control->rings[i].ba)
757 mem_allocated +=(sizeof(struct buffAdd *) * blk_cnt);
758 for (j = 0; j < blk_cnt; j++) {
760 mac_control->rings[i].ba[j] =
761 kmalloc((sizeof(struct buffAdd) *
762 (rxd_count[nic->rxd_mode] + 1)),
764 if (!mac_control->rings[i].ba[j])
766 mem_allocated += (sizeof(struct buffAdd) * \
767 (rxd_count[nic->rxd_mode] + 1));
768 while (k != rxd_count[nic->rxd_mode]) {
769 ba = &mac_control->rings[i].ba[j][k];
771 ba->ba_0_org = (void *) kmalloc
772 (BUF0_LEN + ALIGN_SIZE, GFP_KERNEL);
776 (BUF0_LEN + ALIGN_SIZE);
777 tmp = (unsigned long)ba->ba_0_org;
779 tmp &= ~((unsigned long) ALIGN_SIZE);
780 ba->ba_0 = (void *) tmp;
782 ba->ba_1_org = (void *) kmalloc
783 (BUF1_LEN + ALIGN_SIZE, GFP_KERNEL);
787 += (BUF1_LEN + ALIGN_SIZE);
788 tmp = (unsigned long) ba->ba_1_org;
790 tmp &= ~((unsigned long) ALIGN_SIZE);
791 ba->ba_1 = (void *) tmp;
798 /* Allocation and initialization of Statistics block */
799 size = sizeof(struct stat_block);
800 mac_control->stats_mem = pci_alloc_consistent
801 (nic->pdev, size, &mac_control->stats_mem_phy);
803 if (!mac_control->stats_mem) {
805 * In case of failure, free_shared_mem() is called, which
806 * should free any memory that was alloced till the
811 mem_allocated += size;
812 mac_control->stats_mem_sz = size;
814 tmp_v_addr = mac_control->stats_mem;
815 mac_control->stats_info = (struct stat_block *) tmp_v_addr;
816 memset(tmp_v_addr, 0, size);
817 DBG_PRINT(INIT_DBG, "%s:Ring Mem PHY: 0x%llx\n", dev->name,
818 (unsigned long long) tmp_p_addr);
819 mac_control->stats_info->sw_stat.mem_allocated += mem_allocated;
824 * free_shared_mem - Free the allocated Memory
825 * @nic: Device private variable.
826 * Description: This function is to free all memory locations allocated by
827 * the init_shared_mem() function and return it to the kernel.
830 static void free_shared_mem(struct s2io_nic *nic)
832 int i, j, blk_cnt, size;
835 dma_addr_t tmp_p_addr;
836 struct mac_info *mac_control;
837 struct config_param *config;
838 int lst_size, lst_per_page;
839 struct net_device *dev;
847 mac_control = &nic->mac_control;
848 config = &nic->config;
850 lst_size = (sizeof(struct TxD) * config->max_txds);
851 lst_per_page = PAGE_SIZE / lst_size;
853 for (i = 0; i < config->tx_fifo_num; i++) {
854 ufo_size += config->tx_cfg[i].fifo_len;
855 page_num = TXD_MEM_PAGE_CNT(config->tx_cfg[i].fifo_len,
857 for (j = 0; j < page_num; j++) {
858 int mem_blks = (j * lst_per_page);
859 if (!mac_control->fifos[i].list_info)
861 if (!mac_control->fifos[i].list_info[mem_blks].
864 pci_free_consistent(nic->pdev, PAGE_SIZE,
865 mac_control->fifos[i].
868 mac_control->fifos[i].
871 nic->mac_control.stats_info->sw_stat.mem_freed
874 /* If we got a zero DMA address during allocation,
877 if (mac_control->zerodma_virt_addr) {
878 pci_free_consistent(nic->pdev, PAGE_SIZE,
879 mac_control->zerodma_virt_addr,
882 "%s: Freeing TxDL with zero DMA addr. ",
884 DBG_PRINT(INIT_DBG, "Virtual address %p\n",
885 mac_control->zerodma_virt_addr);
886 nic->mac_control.stats_info->sw_stat.mem_freed
889 kfree(mac_control->fifos[i].list_info);
890 nic->mac_control.stats_info->sw_stat.mem_freed +=
891 (nic->config.tx_cfg[i].fifo_len *sizeof(struct list_info_hold));
894 size = SIZE_OF_BLOCK;
895 for (i = 0; i < config->rx_ring_num; i++) {
896 blk_cnt = mac_control->rings[i].block_count;
897 for (j = 0; j < blk_cnt; j++) {
898 tmp_v_addr = mac_control->rings[i].rx_blocks[j].
900 tmp_p_addr = mac_control->rings[i].rx_blocks[j].
902 if (tmp_v_addr == NULL)
904 pci_free_consistent(nic->pdev, size,
905 tmp_v_addr, tmp_p_addr);
906 nic->mac_control.stats_info->sw_stat.mem_freed += size;
907 kfree(mac_control->rings[i].rx_blocks[j].rxds);
908 nic->mac_control.stats_info->sw_stat.mem_freed +=
909 ( sizeof(struct rxd_info)* rxd_count[nic->rxd_mode]);
913 if (nic->rxd_mode == RXD_MODE_3B) {
914 /* Freeing buffer storage addresses in 2BUFF mode. */
915 for (i = 0; i < config->rx_ring_num; i++) {
916 blk_cnt = config->rx_cfg[i].num_rxd /
917 (rxd_count[nic->rxd_mode] + 1);
918 for (j = 0; j < blk_cnt; j++) {
920 if (!mac_control->rings[i].ba[j])
922 while (k != rxd_count[nic->rxd_mode]) {
924 &mac_control->rings[i].ba[j][k];
926 nic->mac_control.stats_info->sw_stat.\
927 mem_freed += (BUF0_LEN + ALIGN_SIZE);
929 nic->mac_control.stats_info->sw_stat.\
930 mem_freed += (BUF1_LEN + ALIGN_SIZE);
933 kfree(mac_control->rings[i].ba[j]);
934 nic->mac_control.stats_info->sw_stat.mem_freed +=
935 (sizeof(struct buffAdd) *
936 (rxd_count[nic->rxd_mode] + 1));
938 kfree(mac_control->rings[i].ba);
939 nic->mac_control.stats_info->sw_stat.mem_freed +=
940 (sizeof(struct buffAdd *) * blk_cnt);
944 if (mac_control->stats_mem) {
945 pci_free_consistent(nic->pdev,
946 mac_control->stats_mem_sz,
947 mac_control->stats_mem,
948 mac_control->stats_mem_phy);
949 nic->mac_control.stats_info->sw_stat.mem_freed +=
950 mac_control->stats_mem_sz;
952 if (nic->ufo_in_band_v) {
953 kfree(nic->ufo_in_band_v);
954 nic->mac_control.stats_info->sw_stat.mem_freed
955 += (ufo_size * sizeof(u64));
960 * s2io_verify_pci_mode -
963 static int s2io_verify_pci_mode(struct s2io_nic *nic)
965 struct XENA_dev_config __iomem *bar0 = nic->bar0;
966 register u64 val64 = 0;
969 val64 = readq(&bar0->pci_mode);
970 mode = (u8)GET_PCI_MODE(val64);
972 if ( val64 & PCI_MODE_UNKNOWN_MODE)
973 return -1; /* Unknown PCI mode */
977 #define NEC_VENID 0x1033
978 #define NEC_DEVID 0x0125
979 static int s2io_on_nec_bridge(struct pci_dev *s2io_pdev)
981 struct pci_dev *tdev = NULL;
982 while ((tdev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, tdev)) != NULL) {
983 if (tdev->vendor == NEC_VENID && tdev->device == NEC_DEVID) {
984 if (tdev->bus == s2io_pdev->bus->parent)
992 static int bus_speed[8] = {33, 133, 133, 200, 266, 133, 200, 266};
994 * s2io_print_pci_mode -
996 static int s2io_print_pci_mode(struct s2io_nic *nic)
998 struct XENA_dev_config __iomem *bar0 = nic->bar0;
999 register u64 val64 = 0;
1001 struct config_param *config = &nic->config;
1003 val64 = readq(&bar0->pci_mode);
1004 mode = (u8)GET_PCI_MODE(val64);
1006 if ( val64 & PCI_MODE_UNKNOWN_MODE)
1007 return -1; /* Unknown PCI mode */
1009 config->bus_speed = bus_speed[mode];
1011 if (s2io_on_nec_bridge(nic->pdev)) {
1012 DBG_PRINT(ERR_DBG, "%s: Device is on PCI-E bus\n",
1017 if (val64 & PCI_MODE_32_BITS) {
1018 DBG_PRINT(ERR_DBG, "%s: Device is on 32 bit ", nic->dev->name);
1020 DBG_PRINT(ERR_DBG, "%s: Device is on 64 bit ", nic->dev->name);
1024 case PCI_MODE_PCI_33:
1025 DBG_PRINT(ERR_DBG, "33MHz PCI bus\n");
1027 case PCI_MODE_PCI_66:
1028 DBG_PRINT(ERR_DBG, "66MHz PCI bus\n");
1030 case PCI_MODE_PCIX_M1_66:
1031 DBG_PRINT(ERR_DBG, "66MHz PCIX(M1) bus\n");
1033 case PCI_MODE_PCIX_M1_100:
1034 DBG_PRINT(ERR_DBG, "100MHz PCIX(M1) bus\n");
1036 case PCI_MODE_PCIX_M1_133:
1037 DBG_PRINT(ERR_DBG, "133MHz PCIX(M1) bus\n");
1039 case PCI_MODE_PCIX_M2_66:
1040 DBG_PRINT(ERR_DBG, "133MHz PCIX(M2) bus\n");
1042 case PCI_MODE_PCIX_M2_100:
1043 DBG_PRINT(ERR_DBG, "200MHz PCIX(M2) bus\n");
1045 case PCI_MODE_PCIX_M2_133:
1046 DBG_PRINT(ERR_DBG, "266MHz PCIX(M2) bus\n");
1049 return -1; /* Unsupported bus speed */
1056 * init_nic - Initialization of hardware
1057 * @nic: device peivate variable
1058 * Description: The function sequentially configures every block
1059 * of the H/W from their reset values.
1060 * Return Value: SUCCESS on success and
1061 * '-1' on failure (endian settings incorrect).
1064 static int init_nic(struct s2io_nic *nic)
1066 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1067 struct net_device *dev = nic->dev;
1068 register u64 val64 = 0;
1072 struct mac_info *mac_control;
1073 struct config_param *config;
1075 unsigned long long mem_share;
1078 mac_control = &nic->mac_control;
1079 config = &nic->config;
1081 /* to set the swapper controle on the card */
1082 if(s2io_set_swapper(nic)) {
1083 DBG_PRINT(ERR_DBG,"ERROR: Setting Swapper failed\n");
1088 * Herc requires EOI to be removed from reset before XGXS, so..
1090 if (nic->device_type & XFRAME_II_DEVICE) {
1091 val64 = 0xA500000000ULL;
1092 writeq(val64, &bar0->sw_reset);
1094 val64 = readq(&bar0->sw_reset);
1097 /* Remove XGXS from reset state */
1099 writeq(val64, &bar0->sw_reset);
1101 val64 = readq(&bar0->sw_reset);
1103 /* Ensure that it's safe to access registers by checking
1104 * RIC_RUNNING bit is reset. Check is valid only for XframeII.
1106 if (nic->device_type == XFRAME_II_DEVICE) {
1107 for (i = 0; i < 50; i++) {
1108 val64 = readq(&bar0->adapter_status);
1109 if (!(val64 & ADAPTER_STATUS_RIC_RUNNING))
1117 /* Enable Receiving broadcasts */
1118 add = &bar0->mac_cfg;
1119 val64 = readq(&bar0->mac_cfg);
1120 val64 |= MAC_RMAC_BCAST_ENABLE;
1121 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1122 writel((u32) val64, add);
1123 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1124 writel((u32) (val64 >> 32), (add + 4));
1126 /* Read registers in all blocks */
1127 val64 = readq(&bar0->mac_int_mask);
1128 val64 = readq(&bar0->mc_int_mask);
1129 val64 = readq(&bar0->xgxs_int_mask);
1133 writeq(vBIT(val64, 2, 14), &bar0->rmac_max_pyld_len);
1135 if (nic->device_type & XFRAME_II_DEVICE) {
1136 while (herc_act_dtx_cfg[dtx_cnt] != END_SIGN) {
1137 SPECIAL_REG_WRITE(herc_act_dtx_cfg[dtx_cnt],
1138 &bar0->dtx_control, UF);
1140 msleep(1); /* Necessary!! */
1144 while (xena_dtx_cfg[dtx_cnt] != END_SIGN) {
1145 SPECIAL_REG_WRITE(xena_dtx_cfg[dtx_cnt],
1146 &bar0->dtx_control, UF);
1147 val64 = readq(&bar0->dtx_control);
1152 /* Tx DMA Initialization */
1154 writeq(val64, &bar0->tx_fifo_partition_0);
1155 writeq(val64, &bar0->tx_fifo_partition_1);
1156 writeq(val64, &bar0->tx_fifo_partition_2);
1157 writeq(val64, &bar0->tx_fifo_partition_3);
1160 for (i = 0, j = 0; i < config->tx_fifo_num; i++) {
1162 vBIT(config->tx_cfg[i].fifo_len - 1, ((i * 32) + 19),
1163 13) | vBIT(config->tx_cfg[i].fifo_priority,
1166 if (i == (config->tx_fifo_num - 1)) {
1173 writeq(val64, &bar0->tx_fifo_partition_0);
1177 writeq(val64, &bar0->tx_fifo_partition_1);
1181 writeq(val64, &bar0->tx_fifo_partition_2);
1185 writeq(val64, &bar0->tx_fifo_partition_3);
1191 * Disable 4 PCCs for Xena1, 2 and 3 as per H/W bug
1192 * SXE-008 TRANSMIT DMA ARBITRATION ISSUE.
1194 if ((nic->device_type == XFRAME_I_DEVICE) &&
1195 (nic->pdev->revision < 4))
1196 writeq(PCC_ENABLE_FOUR, &bar0->pcc_enable);
1198 val64 = readq(&bar0->tx_fifo_partition_0);
1199 DBG_PRINT(INIT_DBG, "Fifo partition at: 0x%p is: 0x%llx\n",
1200 &bar0->tx_fifo_partition_0, (unsigned long long) val64);
1203 * Initialization of Tx_PA_CONFIG register to ignore packet
1204 * integrity checking.
1206 val64 = readq(&bar0->tx_pa_cfg);
1207 val64 |= TX_PA_CFG_IGNORE_FRM_ERR | TX_PA_CFG_IGNORE_SNAP_OUI |
1208 TX_PA_CFG_IGNORE_LLC_CTRL | TX_PA_CFG_IGNORE_L2_ERR;
1209 writeq(val64, &bar0->tx_pa_cfg);
1211 /* Rx DMA intialization. */
1213 for (i = 0; i < config->rx_ring_num; i++) {
1215 vBIT(config->rx_cfg[i].ring_priority, (5 + (i * 8)),
1218 writeq(val64, &bar0->rx_queue_priority);
1221 * Allocating equal share of memory to all the
1225 if (nic->device_type & XFRAME_II_DEVICE)
1230 for (i = 0; i < config->rx_ring_num; i++) {
1233 mem_share = (mem_size / config->rx_ring_num +
1234 mem_size % config->rx_ring_num);
1235 val64 |= RX_QUEUE_CFG_Q0_SZ(mem_share);
1238 mem_share = (mem_size / config->rx_ring_num);
1239 val64 |= RX_QUEUE_CFG_Q1_SZ(mem_share);
1242 mem_share = (mem_size / config->rx_ring_num);
1243 val64 |= RX_QUEUE_CFG_Q2_SZ(mem_share);
1246 mem_share = (mem_size / config->rx_ring_num);
1247 val64 |= RX_QUEUE_CFG_Q3_SZ(mem_share);
1250 mem_share = (mem_size / config->rx_ring_num);
1251 val64 |= RX_QUEUE_CFG_Q4_SZ(mem_share);
1254 mem_share = (mem_size / config->rx_ring_num);
1255 val64 |= RX_QUEUE_CFG_Q5_SZ(mem_share);
1258 mem_share = (mem_size / config->rx_ring_num);
1259 val64 |= RX_QUEUE_CFG_Q6_SZ(mem_share);
1262 mem_share = (mem_size / config->rx_ring_num);
1263 val64 |= RX_QUEUE_CFG_Q7_SZ(mem_share);
1267 writeq(val64, &bar0->rx_queue_cfg);
1270 * Filling Tx round robin registers
1271 * as per the number of FIFOs
1273 switch (config->tx_fifo_num) {
1275 val64 = 0x0000000000000000ULL;
1276 writeq(val64, &bar0->tx_w_round_robin_0);
1277 writeq(val64, &bar0->tx_w_round_robin_1);
1278 writeq(val64, &bar0->tx_w_round_robin_2);
1279 writeq(val64, &bar0->tx_w_round_robin_3);
1280 writeq(val64, &bar0->tx_w_round_robin_4);
1283 val64 = 0x0000010000010000ULL;
1284 writeq(val64, &bar0->tx_w_round_robin_0);
1285 val64 = 0x0100000100000100ULL;
1286 writeq(val64, &bar0->tx_w_round_robin_1);
1287 val64 = 0x0001000001000001ULL;
1288 writeq(val64, &bar0->tx_w_round_robin_2);
1289 val64 = 0x0000010000010000ULL;
1290 writeq(val64, &bar0->tx_w_round_robin_3);
1291 val64 = 0x0100000000000000ULL;
1292 writeq(val64, &bar0->tx_w_round_robin_4);
1295 val64 = 0x0001000102000001ULL;
1296 writeq(val64, &bar0->tx_w_round_robin_0);
1297 val64 = 0x0001020000010001ULL;
1298 writeq(val64, &bar0->tx_w_round_robin_1);
1299 val64 = 0x0200000100010200ULL;
1300 writeq(val64, &bar0->tx_w_round_robin_2);
1301 val64 = 0x0001000102000001ULL;
1302 writeq(val64, &bar0->tx_w_round_robin_3);
1303 val64 = 0x0001020000000000ULL;
1304 writeq(val64, &bar0->tx_w_round_robin_4);
1307 val64 = 0x0001020300010200ULL;
1308 writeq(val64, &bar0->tx_w_round_robin_0);
1309 val64 = 0x0100000102030001ULL;
1310 writeq(val64, &bar0->tx_w_round_robin_1);
1311 val64 = 0x0200010000010203ULL;
1312 writeq(val64, &bar0->tx_w_round_robin_2);
1313 val64 = 0x0001020001000001ULL;
1314 writeq(val64, &bar0->tx_w_round_robin_3);
1315 val64 = 0x0203000100000000ULL;
1316 writeq(val64, &bar0->tx_w_round_robin_4);
1319 val64 = 0x0001000203000102ULL;
1320 writeq(val64, &bar0->tx_w_round_robin_0);
1321 val64 = 0x0001020001030004ULL;
1322 writeq(val64, &bar0->tx_w_round_robin_1);
1323 val64 = 0x0001000203000102ULL;
1324 writeq(val64, &bar0->tx_w_round_robin_2);
1325 val64 = 0x0001020001030004ULL;
1326 writeq(val64, &bar0->tx_w_round_robin_3);
1327 val64 = 0x0001000000000000ULL;
1328 writeq(val64, &bar0->tx_w_round_robin_4);
1331 val64 = 0x0001020304000102ULL;
1332 writeq(val64, &bar0->tx_w_round_robin_0);
1333 val64 = 0x0304050001020001ULL;
1334 writeq(val64, &bar0->tx_w_round_robin_1);
1335 val64 = 0x0203000100000102ULL;
1336 writeq(val64, &bar0->tx_w_round_robin_2);
1337 val64 = 0x0304000102030405ULL;
1338 writeq(val64, &bar0->tx_w_round_robin_3);
1339 val64 = 0x0001000200000000ULL;
1340 writeq(val64, &bar0->tx_w_round_robin_4);
1343 val64 = 0x0001020001020300ULL;
1344 writeq(val64, &bar0->tx_w_round_robin_0);
1345 val64 = 0x0102030400010203ULL;
1346 writeq(val64, &bar0->tx_w_round_robin_1);
1347 val64 = 0x0405060001020001ULL;
1348 writeq(val64, &bar0->tx_w_round_robin_2);
1349 val64 = 0x0304050000010200ULL;
1350 writeq(val64, &bar0->tx_w_round_robin_3);
1351 val64 = 0x0102030000000000ULL;
1352 writeq(val64, &bar0->tx_w_round_robin_4);
1355 val64 = 0x0001020300040105ULL;
1356 writeq(val64, &bar0->tx_w_round_robin_0);
1357 val64 = 0x0200030106000204ULL;
1358 writeq(val64, &bar0->tx_w_round_robin_1);
1359 val64 = 0x0103000502010007ULL;
1360 writeq(val64, &bar0->tx_w_round_robin_2);
1361 val64 = 0x0304010002060500ULL;
1362 writeq(val64, &bar0->tx_w_round_robin_3);
1363 val64 = 0x0103020400000000ULL;
1364 writeq(val64, &bar0->tx_w_round_robin_4);
1368 /* Enable all configured Tx FIFO partitions */
1369 val64 = readq(&bar0->tx_fifo_partition_0);
1370 val64 |= (TX_FIFO_PARTITION_EN);
1371 writeq(val64, &bar0->tx_fifo_partition_0);
1373 /* Filling the Rx round robin registers as per the
1374 * number of Rings and steering based on QoS.
1376 switch (config->rx_ring_num) {
1378 val64 = 0x8080808080808080ULL;
1379 writeq(val64, &bar0->rts_qos_steering);
1382 val64 = 0x0000010000010000ULL;
1383 writeq(val64, &bar0->rx_w_round_robin_0);
1384 val64 = 0x0100000100000100ULL;
1385 writeq(val64, &bar0->rx_w_round_robin_1);
1386 val64 = 0x0001000001000001ULL;
1387 writeq(val64, &bar0->rx_w_round_robin_2);
1388 val64 = 0x0000010000010000ULL;
1389 writeq(val64, &bar0->rx_w_round_robin_3);
1390 val64 = 0x0100000000000000ULL;
1391 writeq(val64, &bar0->rx_w_round_robin_4);
1393 val64 = 0x8080808040404040ULL;
1394 writeq(val64, &bar0->rts_qos_steering);
1397 val64 = 0x0001000102000001ULL;
1398 writeq(val64, &bar0->rx_w_round_robin_0);
1399 val64 = 0x0001020000010001ULL;
1400 writeq(val64, &bar0->rx_w_round_robin_1);
1401 val64 = 0x0200000100010200ULL;
1402 writeq(val64, &bar0->rx_w_round_robin_2);
1403 val64 = 0x0001000102000001ULL;
1404 writeq(val64, &bar0->rx_w_round_robin_3);
1405 val64 = 0x0001020000000000ULL;
1406 writeq(val64, &bar0->rx_w_round_robin_4);
1408 val64 = 0x8080804040402020ULL;
1409 writeq(val64, &bar0->rts_qos_steering);
1412 val64 = 0x0001020300010200ULL;
1413 writeq(val64, &bar0->rx_w_round_robin_0);
1414 val64 = 0x0100000102030001ULL;
1415 writeq(val64, &bar0->rx_w_round_robin_1);
1416 val64 = 0x0200010000010203ULL;
1417 writeq(val64, &bar0->rx_w_round_robin_2);
1418 val64 = 0x0001020001000001ULL;
1419 writeq(val64, &bar0->rx_w_round_robin_3);
1420 val64 = 0x0203000100000000ULL;
1421 writeq(val64, &bar0->rx_w_round_robin_4);
1423 val64 = 0x8080404020201010ULL;
1424 writeq(val64, &bar0->rts_qos_steering);
1427 val64 = 0x0001000203000102ULL;
1428 writeq(val64, &bar0->rx_w_round_robin_0);
1429 val64 = 0x0001020001030004ULL;
1430 writeq(val64, &bar0->rx_w_round_robin_1);
1431 val64 = 0x0001000203000102ULL;
1432 writeq(val64, &bar0->rx_w_round_robin_2);
1433 val64 = 0x0001020001030004ULL;
1434 writeq(val64, &bar0->rx_w_round_robin_3);
1435 val64 = 0x0001000000000000ULL;
1436 writeq(val64, &bar0->rx_w_round_robin_4);
1438 val64 = 0x8080404020201008ULL;
1439 writeq(val64, &bar0->rts_qos_steering);
1442 val64 = 0x0001020304000102ULL;
1443 writeq(val64, &bar0->rx_w_round_robin_0);
1444 val64 = 0x0304050001020001ULL;
1445 writeq(val64, &bar0->rx_w_round_robin_1);
1446 val64 = 0x0203000100000102ULL;
1447 writeq(val64, &bar0->rx_w_round_robin_2);
1448 val64 = 0x0304000102030405ULL;
1449 writeq(val64, &bar0->rx_w_round_robin_3);
1450 val64 = 0x0001000200000000ULL;
1451 writeq(val64, &bar0->rx_w_round_robin_4);
1453 val64 = 0x8080404020100804ULL;
1454 writeq(val64, &bar0->rts_qos_steering);
1457 val64 = 0x0001020001020300ULL;
1458 writeq(val64, &bar0->rx_w_round_robin_0);
1459 val64 = 0x0102030400010203ULL;
1460 writeq(val64, &bar0->rx_w_round_robin_1);
1461 val64 = 0x0405060001020001ULL;
1462 writeq(val64, &bar0->rx_w_round_robin_2);
1463 val64 = 0x0304050000010200ULL;
1464 writeq(val64, &bar0->rx_w_round_robin_3);
1465 val64 = 0x0102030000000000ULL;
1466 writeq(val64, &bar0->rx_w_round_robin_4);
1468 val64 = 0x8080402010080402ULL;
1469 writeq(val64, &bar0->rts_qos_steering);
1472 val64 = 0x0001020300040105ULL;
1473 writeq(val64, &bar0->rx_w_round_robin_0);
1474 val64 = 0x0200030106000204ULL;
1475 writeq(val64, &bar0->rx_w_round_robin_1);
1476 val64 = 0x0103000502010007ULL;
1477 writeq(val64, &bar0->rx_w_round_robin_2);
1478 val64 = 0x0304010002060500ULL;
1479 writeq(val64, &bar0->rx_w_round_robin_3);
1480 val64 = 0x0103020400000000ULL;
1481 writeq(val64, &bar0->rx_w_round_robin_4);
1483 val64 = 0x8040201008040201ULL;
1484 writeq(val64, &bar0->rts_qos_steering);
1490 for (i = 0; i < 8; i++)
1491 writeq(val64, &bar0->rts_frm_len_n[i]);
1493 /* Set the default rts frame length for the rings configured */
1494 val64 = MAC_RTS_FRM_LEN_SET(dev->mtu+22);
1495 for (i = 0 ; i < config->rx_ring_num ; i++)
1496 writeq(val64, &bar0->rts_frm_len_n[i]);
1498 /* Set the frame length for the configured rings
1499 * desired by the user
1501 for (i = 0; i < config->rx_ring_num; i++) {
1502 /* If rts_frm_len[i] == 0 then it is assumed that user not
1503 * specified frame length steering.
1504 * If the user provides the frame length then program
1505 * the rts_frm_len register for those values or else
1506 * leave it as it is.
1508 if (rts_frm_len[i] != 0) {
1509 writeq(MAC_RTS_FRM_LEN_SET(rts_frm_len[i]),
1510 &bar0->rts_frm_len_n[i]);
1514 /* Disable differentiated services steering logic */
1515 for (i = 0; i < 64; i++) {
1516 if (rts_ds_steer(nic, i, 0) == FAILURE) {
1517 DBG_PRINT(ERR_DBG, "%s: failed rts ds steering",
1519 DBG_PRINT(ERR_DBG, "set on codepoint %d\n", i);
1524 /* Program statistics memory */
1525 writeq(mac_control->stats_mem_phy, &bar0->stat_addr);
1527 if (nic->device_type == XFRAME_II_DEVICE) {
1528 val64 = STAT_BC(0x320);
1529 writeq(val64, &bar0->stat_byte_cnt);
1533 * Initializing the sampling rate for the device to calculate the
1534 * bandwidth utilization.
1536 val64 = MAC_TX_LINK_UTIL_VAL(tmac_util_period) |
1537 MAC_RX_LINK_UTIL_VAL(rmac_util_period);
1538 writeq(val64, &bar0->mac_link_util);
1542 * Initializing the Transmit and Receive Traffic Interrupt
1546 * TTI Initialization. Default Tx timer gets us about
1547 * 250 interrupts per sec. Continuous interrupts are enabled
1550 if (nic->device_type == XFRAME_II_DEVICE) {
1551 int count = (nic->config.bus_speed * 125)/2;
1552 val64 = TTI_DATA1_MEM_TX_TIMER_VAL(count);
1555 val64 = TTI_DATA1_MEM_TX_TIMER_VAL(0x2078);
1557 val64 |= TTI_DATA1_MEM_TX_URNG_A(0xA) |
1558 TTI_DATA1_MEM_TX_URNG_B(0x10) |
1559 TTI_DATA1_MEM_TX_URNG_C(0x30) | TTI_DATA1_MEM_TX_TIMER_AC_EN;
1560 if (use_continuous_tx_intrs)
1561 val64 |= TTI_DATA1_MEM_TX_TIMER_CI_EN;
1562 writeq(val64, &bar0->tti_data1_mem);
1564 val64 = TTI_DATA2_MEM_TX_UFC_A(0x10) |
1565 TTI_DATA2_MEM_TX_UFC_B(0x20) |
1566 TTI_DATA2_MEM_TX_UFC_C(0x40) | TTI_DATA2_MEM_TX_UFC_D(0x80);
1567 writeq(val64, &bar0->tti_data2_mem);
1569 val64 = TTI_CMD_MEM_WE | TTI_CMD_MEM_STROBE_NEW_CMD;
1570 writeq(val64, &bar0->tti_command_mem);
1573 * Once the operation completes, the Strobe bit of the command
1574 * register will be reset. We poll for this particular condition
1575 * We wait for a maximum of 500ms for the operation to complete,
1576 * if it's not complete by then we return error.
1580 val64 = readq(&bar0->tti_command_mem);
1581 if (!(val64 & TTI_CMD_MEM_STROBE_NEW_CMD)) {
1585 DBG_PRINT(ERR_DBG, "%s: TTI init Failed\n",
1593 /* RTI Initialization */
1594 if (nic->device_type == XFRAME_II_DEVICE) {
1596 * Programmed to generate Apprx 500 Intrs per
1599 int count = (nic->config.bus_speed * 125)/4;
1600 val64 = RTI_DATA1_MEM_RX_TIMER_VAL(count);
1602 val64 = RTI_DATA1_MEM_RX_TIMER_VAL(0xFFF);
1603 val64 |= RTI_DATA1_MEM_RX_URNG_A(0xA) |
1604 RTI_DATA1_MEM_RX_URNG_B(0x10) |
1605 RTI_DATA1_MEM_RX_URNG_C(0x30) | RTI_DATA1_MEM_RX_TIMER_AC_EN;
1607 writeq(val64, &bar0->rti_data1_mem);
1609 val64 = RTI_DATA2_MEM_RX_UFC_A(0x1) |
1610 RTI_DATA2_MEM_RX_UFC_B(0x2) ;
1611 if (nic->config.intr_type == MSI_X)
1612 val64 |= (RTI_DATA2_MEM_RX_UFC_C(0x20) | \
1613 RTI_DATA2_MEM_RX_UFC_D(0x40));
1615 val64 |= (RTI_DATA2_MEM_RX_UFC_C(0x40) | \
1616 RTI_DATA2_MEM_RX_UFC_D(0x80));
1617 writeq(val64, &bar0->rti_data2_mem);
1619 for (i = 0; i < config->rx_ring_num; i++) {
1620 val64 = RTI_CMD_MEM_WE | RTI_CMD_MEM_STROBE_NEW_CMD
1621 | RTI_CMD_MEM_OFFSET(i);
1622 writeq(val64, &bar0->rti_command_mem);
1625 * Once the operation completes, the Strobe bit of the
1626 * command register will be reset. We poll for this
1627 * particular condition. We wait for a maximum of 500ms
1628 * for the operation to complete, if it's not complete
1629 * by then we return error.
1633 val64 = readq(&bar0->rti_command_mem);
1634 if (!(val64 & RTI_CMD_MEM_STROBE_NEW_CMD))
1638 DBG_PRINT(ERR_DBG, "%s: RTI init Failed\n",
1648 * Initializing proper values as Pause threshold into all
1649 * the 8 Queues on Rx side.
1651 writeq(0xffbbffbbffbbffbbULL, &bar0->mc_pause_thresh_q0q3);
1652 writeq(0xffbbffbbffbbffbbULL, &bar0->mc_pause_thresh_q4q7);
1654 /* Disable RMAC PAD STRIPPING */
1655 add = &bar0->mac_cfg;
1656 val64 = readq(&bar0->mac_cfg);
1657 val64 &= ~(MAC_CFG_RMAC_STRIP_PAD);
1658 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1659 writel((u32) (val64), add);
1660 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1661 writel((u32) (val64 >> 32), (add + 4));
1662 val64 = readq(&bar0->mac_cfg);
1664 /* Enable FCS stripping by adapter */
1665 add = &bar0->mac_cfg;
1666 val64 = readq(&bar0->mac_cfg);
1667 val64 |= MAC_CFG_RMAC_STRIP_FCS;
1668 if (nic->device_type == XFRAME_II_DEVICE)
1669 writeq(val64, &bar0->mac_cfg);
1671 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1672 writel((u32) (val64), add);
1673 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
1674 writel((u32) (val64 >> 32), (add + 4));
1678 * Set the time value to be inserted in the pause frame
1679 * generated by xena.
1681 val64 = readq(&bar0->rmac_pause_cfg);
1682 val64 &= ~(RMAC_PAUSE_HG_PTIME(0xffff));
1683 val64 |= RMAC_PAUSE_HG_PTIME(nic->mac_control.rmac_pause_time);
1684 writeq(val64, &bar0->rmac_pause_cfg);
1687 * Set the Threshold Limit for Generating the pause frame
1688 * If the amount of data in any Queue exceeds ratio of
1689 * (mac_control.mc_pause_threshold_q0q3 or q4q7)/256
1690 * pause frame is generated
1693 for (i = 0; i < 4; i++) {
1695 (((u64) 0xFF00 | nic->mac_control.
1696 mc_pause_threshold_q0q3)
1699 writeq(val64, &bar0->mc_pause_thresh_q0q3);
1702 for (i = 0; i < 4; i++) {
1704 (((u64) 0xFF00 | nic->mac_control.
1705 mc_pause_threshold_q4q7)
1708 writeq(val64, &bar0->mc_pause_thresh_q4q7);
1711 * TxDMA will stop Read request if the number of read split has
1712 * exceeded the limit pointed by shared_splits
1714 val64 = readq(&bar0->pic_control);
1715 val64 |= PIC_CNTL_SHARED_SPLITS(shared_splits);
1716 writeq(val64, &bar0->pic_control);
1718 if (nic->config.bus_speed == 266) {
1719 writeq(TXREQTO_VAL(0x7f) | TXREQTO_EN, &bar0->txreqtimeout);
1720 writeq(0x0, &bar0->read_retry_delay);
1721 writeq(0x0, &bar0->write_retry_delay);
1725 * Programming the Herc to split every write transaction
1726 * that does not start on an ADB to reduce disconnects.
1728 if (nic->device_type == XFRAME_II_DEVICE) {
1729 val64 = FAULT_BEHAVIOUR | EXT_REQ_EN |
1730 MISC_LINK_STABILITY_PRD(3);
1731 writeq(val64, &bar0->misc_control);
1732 val64 = readq(&bar0->pic_control2);
1733 val64 &= ~(s2BIT(13)|s2BIT(14)|s2BIT(15));
1734 writeq(val64, &bar0->pic_control2);
1736 if (strstr(nic->product_name, "CX4")) {
1737 val64 = TMAC_AVG_IPG(0x17);
1738 writeq(val64, &bar0->tmac_avg_ipg);
1743 #define LINK_UP_DOWN_INTERRUPT 1
1744 #define MAC_RMAC_ERR_TIMER 2
1746 static int s2io_link_fault_indication(struct s2io_nic *nic)
1748 if (nic->config.intr_type != INTA)
1749 return MAC_RMAC_ERR_TIMER;
1750 if (nic->device_type == XFRAME_II_DEVICE)
1751 return LINK_UP_DOWN_INTERRUPT;
1753 return MAC_RMAC_ERR_TIMER;
1757 * do_s2io_write_bits - update alarm bits in alarm register
1758 * @value: alarm bits
1759 * @flag: interrupt status
1760 * @addr: address value
1761 * Description: update alarm bits in alarm register
1765 static void do_s2io_write_bits(u64 value, int flag, void __iomem *addr)
1769 temp64 = readq(addr);
1771 if(flag == ENABLE_INTRS)
1772 temp64 &= ~((u64) value);
1774 temp64 |= ((u64) value);
1775 writeq(temp64, addr);
1778 static void en_dis_err_alarms(struct s2io_nic *nic, u16 mask, int flag)
1780 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1781 register u64 gen_int_mask = 0;
1783 if (mask & TX_DMA_INTR) {
1785 gen_int_mask |= TXDMA_INT_M;
1787 do_s2io_write_bits(TXDMA_TDA_INT | TXDMA_PFC_INT |
1788 TXDMA_PCC_INT | TXDMA_TTI_INT |
1789 TXDMA_LSO_INT | TXDMA_TPA_INT |
1790 TXDMA_SM_INT, flag, &bar0->txdma_int_mask);
1792 do_s2io_write_bits(PFC_ECC_DB_ERR | PFC_SM_ERR_ALARM |
1793 PFC_MISC_0_ERR | PFC_MISC_1_ERR |
1794 PFC_PCIX_ERR | PFC_ECC_SG_ERR, flag,
1795 &bar0->pfc_err_mask);
1797 do_s2io_write_bits(TDA_Fn_ECC_DB_ERR | TDA_SM0_ERR_ALARM |
1798 TDA_SM1_ERR_ALARM | TDA_Fn_ECC_SG_ERR |
1799 TDA_PCIX_ERR, flag, &bar0->tda_err_mask);
1801 do_s2io_write_bits(PCC_FB_ECC_DB_ERR | PCC_TXB_ECC_DB_ERR |
1802 PCC_SM_ERR_ALARM | PCC_WR_ERR_ALARM |
1803 PCC_N_SERR | PCC_6_COF_OV_ERR |
1804 PCC_7_COF_OV_ERR | PCC_6_LSO_OV_ERR |
1805 PCC_7_LSO_OV_ERR | PCC_FB_ECC_SG_ERR |
1806 PCC_TXB_ECC_SG_ERR, flag, &bar0->pcc_err_mask);
1808 do_s2io_write_bits(TTI_SM_ERR_ALARM | TTI_ECC_SG_ERR |
1809 TTI_ECC_DB_ERR, flag, &bar0->tti_err_mask);
1811 do_s2io_write_bits(LSO6_ABORT | LSO7_ABORT |
1812 LSO6_SM_ERR_ALARM | LSO7_SM_ERR_ALARM |
1813 LSO6_SEND_OFLOW | LSO7_SEND_OFLOW,
1814 flag, &bar0->lso_err_mask);
1816 do_s2io_write_bits(TPA_SM_ERR_ALARM | TPA_TX_FRM_DROP,
1817 flag, &bar0->tpa_err_mask);
1819 do_s2io_write_bits(SM_SM_ERR_ALARM, flag, &bar0->sm_err_mask);
1823 if (mask & TX_MAC_INTR) {
1824 gen_int_mask |= TXMAC_INT_M;
1825 do_s2io_write_bits(MAC_INT_STATUS_TMAC_INT, flag,
1826 &bar0->mac_int_mask);
1827 do_s2io_write_bits(TMAC_TX_BUF_OVRN | TMAC_TX_SM_ERR |
1828 TMAC_ECC_SG_ERR | TMAC_ECC_DB_ERR |
1829 TMAC_DESC_ECC_SG_ERR | TMAC_DESC_ECC_DB_ERR,
1830 flag, &bar0->mac_tmac_err_mask);
1833 if (mask & TX_XGXS_INTR) {
1834 gen_int_mask |= TXXGXS_INT_M;
1835 do_s2io_write_bits(XGXS_INT_STATUS_TXGXS, flag,
1836 &bar0->xgxs_int_mask);
1837 do_s2io_write_bits(TXGXS_ESTORE_UFLOW | TXGXS_TX_SM_ERR |
1838 TXGXS_ECC_SG_ERR | TXGXS_ECC_DB_ERR,
1839 flag, &bar0->xgxs_txgxs_err_mask);
1842 if (mask & RX_DMA_INTR) {
1843 gen_int_mask |= RXDMA_INT_M;
1844 do_s2io_write_bits(RXDMA_INT_RC_INT_M | RXDMA_INT_RPA_INT_M |
1845 RXDMA_INT_RDA_INT_M | RXDMA_INT_RTI_INT_M,
1846 flag, &bar0->rxdma_int_mask);
1847 do_s2io_write_bits(RC_PRCn_ECC_DB_ERR | RC_FTC_ECC_DB_ERR |
1848 RC_PRCn_SM_ERR_ALARM | RC_FTC_SM_ERR_ALARM |
1849 RC_PRCn_ECC_SG_ERR | RC_FTC_ECC_SG_ERR |
1850 RC_RDA_FAIL_WR_Rn, flag, &bar0->rc_err_mask);
1851 do_s2io_write_bits(PRC_PCI_AB_RD_Rn | PRC_PCI_AB_WR_Rn |
1852 PRC_PCI_AB_F_WR_Rn | PRC_PCI_DP_RD_Rn |
1853 PRC_PCI_DP_WR_Rn | PRC_PCI_DP_F_WR_Rn, flag,
1854 &bar0->prc_pcix_err_mask);
1855 do_s2io_write_bits(RPA_SM_ERR_ALARM | RPA_CREDIT_ERR |
1856 RPA_ECC_SG_ERR | RPA_ECC_DB_ERR, flag,
1857 &bar0->rpa_err_mask);
1858 do_s2io_write_bits(RDA_RXDn_ECC_DB_ERR | RDA_FRM_ECC_DB_N_AERR |
1859 RDA_SM1_ERR_ALARM | RDA_SM0_ERR_ALARM |
1860 RDA_RXD_ECC_DB_SERR | RDA_RXDn_ECC_SG_ERR |
1861 RDA_FRM_ECC_SG_ERR | RDA_MISC_ERR|RDA_PCIX_ERR,
1862 flag, &bar0->rda_err_mask);
1863 do_s2io_write_bits(RTI_SM_ERR_ALARM |
1864 RTI_ECC_SG_ERR | RTI_ECC_DB_ERR,
1865 flag, &bar0->rti_err_mask);
1868 if (mask & RX_MAC_INTR) {
1869 gen_int_mask |= RXMAC_INT_M;
1870 do_s2io_write_bits(MAC_INT_STATUS_RMAC_INT, flag,
1871 &bar0->mac_int_mask);
1872 do_s2io_write_bits(RMAC_RX_BUFF_OVRN | RMAC_RX_SM_ERR |
1873 RMAC_UNUSED_INT | RMAC_SINGLE_ECC_ERR |
1874 RMAC_DOUBLE_ECC_ERR |
1875 RMAC_LINK_STATE_CHANGE_INT,
1876 flag, &bar0->mac_rmac_err_mask);
1879 if (mask & RX_XGXS_INTR)
1881 gen_int_mask |= RXXGXS_INT_M;
1882 do_s2io_write_bits(XGXS_INT_STATUS_RXGXS, flag,
1883 &bar0->xgxs_int_mask);
1884 do_s2io_write_bits(RXGXS_ESTORE_OFLOW | RXGXS_RX_SM_ERR, flag,
1885 &bar0->xgxs_rxgxs_err_mask);
1888 if (mask & MC_INTR) {
1889 gen_int_mask |= MC_INT_M;
1890 do_s2io_write_bits(MC_INT_MASK_MC_INT, flag, &bar0->mc_int_mask);
1891 do_s2io_write_bits(MC_ERR_REG_SM_ERR | MC_ERR_REG_ECC_ALL_SNG |
1892 MC_ERR_REG_ECC_ALL_DBL | PLL_LOCK_N, flag,
1893 &bar0->mc_err_mask);
1895 nic->general_int_mask = gen_int_mask;
1897 /* Remove this line when alarm interrupts are enabled */
1898 nic->general_int_mask = 0;
1901 * en_dis_able_nic_intrs - Enable or Disable the interrupts
1902 * @nic: device private variable,
1903 * @mask: A mask indicating which Intr block must be modified and,
1904 * @flag: A flag indicating whether to enable or disable the Intrs.
1905 * Description: This function will either disable or enable the interrupts
1906 * depending on the flag argument. The mask argument can be used to
1907 * enable/disable any Intr block.
1908 * Return Value: NONE.
1911 static void en_dis_able_nic_intrs(struct s2io_nic *nic, u16 mask, int flag)
1913 struct XENA_dev_config __iomem *bar0 = nic->bar0;
1914 register u64 temp64 = 0, intr_mask = 0;
1916 intr_mask = nic->general_int_mask;
1918 /* Top level interrupt classification */
1919 /* PIC Interrupts */
1920 if (mask & TX_PIC_INTR) {
1921 /* Enable PIC Intrs in the general intr mask register */
1922 intr_mask |= TXPIC_INT_M;
1923 if (flag == ENABLE_INTRS) {
1925 * If Hercules adapter enable GPIO otherwise
1926 * disable all PCIX, Flash, MDIO, IIC and GPIO
1927 * interrupts for now.
1930 if (s2io_link_fault_indication(nic) ==
1931 LINK_UP_DOWN_INTERRUPT ) {
1932 do_s2io_write_bits(PIC_INT_GPIO, flag,
1933 &bar0->pic_int_mask);
1934 do_s2io_write_bits(GPIO_INT_MASK_LINK_UP, flag,
1935 &bar0->gpio_int_mask);
1937 writeq(DISABLE_ALL_INTRS, &bar0->pic_int_mask);
1938 } else if (flag == DISABLE_INTRS) {
1940 * Disable PIC Intrs in the general
1941 * intr mask register
1943 writeq(DISABLE_ALL_INTRS, &bar0->pic_int_mask);
1947 /* Tx traffic interrupts */
1948 if (mask & TX_TRAFFIC_INTR) {
1949 intr_mask |= TXTRAFFIC_INT_M;
1950 if (flag == ENABLE_INTRS) {
1952 * Enable all the Tx side interrupts
1953 * writing 0 Enables all 64 TX interrupt levels
1955 writeq(0x0, &bar0->tx_traffic_mask);
1956 } else if (flag == DISABLE_INTRS) {
1958 * Disable Tx Traffic Intrs in the general intr mask
1961 writeq(DISABLE_ALL_INTRS, &bar0->tx_traffic_mask);
1965 /* Rx traffic interrupts */
1966 if (mask & RX_TRAFFIC_INTR) {
1967 intr_mask |= RXTRAFFIC_INT_M;
1968 if (flag == ENABLE_INTRS) {
1969 /* writing 0 Enables all 8 RX interrupt levels */
1970 writeq(0x0, &bar0->rx_traffic_mask);
1971 } else if (flag == DISABLE_INTRS) {
1973 * Disable Rx Traffic Intrs in the general intr mask
1976 writeq(DISABLE_ALL_INTRS, &bar0->rx_traffic_mask);
1980 temp64 = readq(&bar0->general_int_mask);
1981 if (flag == ENABLE_INTRS)
1982 temp64 &= ~((u64) intr_mask);
1984 temp64 = DISABLE_ALL_INTRS;
1985 writeq(temp64, &bar0->general_int_mask);
1987 nic->general_int_mask = readq(&bar0->general_int_mask);
1991 * verify_pcc_quiescent- Checks for PCC quiescent state
1992 * Return: 1 If PCC is quiescence
1993 * 0 If PCC is not quiescence
1995 static int verify_pcc_quiescent(struct s2io_nic *sp, int flag)
1998 struct XENA_dev_config __iomem *bar0 = sp->bar0;
1999 u64 val64 = readq(&bar0->adapter_status);
2001 herc = (sp->device_type == XFRAME_II_DEVICE);
2003 if (flag == FALSE) {
2004 if ((!herc && (sp->pdev->revision >= 4)) || herc) {
2005 if (!(val64 & ADAPTER_STATUS_RMAC_PCC_IDLE))
2008 if (!(val64 & ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE))
2012 if ((!herc && (sp->pdev->revision >= 4)) || herc) {
2013 if (((val64 & ADAPTER_STATUS_RMAC_PCC_IDLE) ==
2014 ADAPTER_STATUS_RMAC_PCC_IDLE))
2017 if (((val64 & ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE) ==
2018 ADAPTER_STATUS_RMAC_PCC_FOUR_IDLE))
2026 * verify_xena_quiescence - Checks whether the H/W is ready
2027 * Description: Returns whether the H/W is ready to go or not. Depending
2028 * on whether adapter enable bit was written or not the comparison
2029 * differs and the calling function passes the input argument flag to
2031 * Return: 1 If xena is quiescence
2032 * 0 If Xena is not quiescence
2035 static int verify_xena_quiescence(struct s2io_nic *sp)
2038 struct XENA_dev_config __iomem *bar0 = sp->bar0;
2039 u64 val64 = readq(&bar0->adapter_status);
2040 mode = s2io_verify_pci_mode(sp);
2042 if (!(val64 & ADAPTER_STATUS_TDMA_READY)) {
2043 DBG_PRINT(ERR_DBG, "%s", "TDMA is not ready!");
2046 if (!(val64 & ADAPTER_STATUS_RDMA_READY)) {
2047 DBG_PRINT(ERR_DBG, "%s", "RDMA is not ready!");
2050 if (!(val64 & ADAPTER_STATUS_PFC_READY)) {
2051 DBG_PRINT(ERR_DBG, "%s", "PFC is not ready!");
2054 if (!(val64 & ADAPTER_STATUS_TMAC_BUF_EMPTY)) {
2055 DBG_PRINT(ERR_DBG, "%s", "TMAC BUF is not empty!");
2058 if (!(val64 & ADAPTER_STATUS_PIC_QUIESCENT)) {
2059 DBG_PRINT(ERR_DBG, "%s", "PIC is not QUIESCENT!");
2062 if (!(val64 & ADAPTER_STATUS_MC_DRAM_READY)) {
2063 DBG_PRINT(ERR_DBG, "%s", "MC_DRAM is not ready!");
2066 if (!(val64 & ADAPTER_STATUS_MC_QUEUES_READY)) {
2067 DBG_PRINT(ERR_DBG, "%s", "MC_QUEUES is not ready!");
2070 if (!(val64 & ADAPTER_STATUS_M_PLL_LOCK)) {
2071 DBG_PRINT(ERR_DBG, "%s", "M_PLL is not locked!");
2076 * In PCI 33 mode, the P_PLL is not used, and therefore,
2077 * the the P_PLL_LOCK bit in the adapter_status register will
2080 if (!(val64 & ADAPTER_STATUS_P_PLL_LOCK) &&
2081 sp->device_type == XFRAME_II_DEVICE && mode !=
2083 DBG_PRINT(ERR_DBG, "%s", "P_PLL is not locked!");
2086 if (!((val64 & ADAPTER_STATUS_RC_PRC_QUIESCENT) ==
2087 ADAPTER_STATUS_RC_PRC_QUIESCENT)) {
2088 DBG_PRINT(ERR_DBG, "%s", "RC_PRC is not QUIESCENT!");
2095 * fix_mac_address - Fix for Mac addr problem on Alpha platforms
2096 * @sp: Pointer to device specifc structure
2098 * New procedure to clear mac address reading problems on Alpha platforms
2102 static void fix_mac_address(struct s2io_nic * sp)
2104 struct XENA_dev_config __iomem *bar0 = sp->bar0;
2108 while (fix_mac[i] != END_SIGN) {
2109 writeq(fix_mac[i++], &bar0->gpio_control);
2111 val64 = readq(&bar0->gpio_control);
2116 * start_nic - Turns the device on
2117 * @nic : device private variable.
2119 * This function actually turns the device on. Before this function is
2120 * called,all Registers are configured from their reset states
2121 * and shared memory is allocated but the NIC is still quiescent. On
2122 * calling this function, the device interrupts are cleared and the NIC is
2123 * literally switched on by writing into the adapter control register.
2125 * SUCCESS on success and -1 on failure.
2128 static int start_nic(struct s2io_nic *nic)
2130 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2131 struct net_device *dev = nic->dev;
2132 register u64 val64 = 0;
2134 struct mac_info *mac_control;
2135 struct config_param *config;
2137 mac_control = &nic->mac_control;
2138 config = &nic->config;
2140 /* PRC Initialization and configuration */
2141 for (i = 0; i < config->rx_ring_num; i++) {
2142 writeq((u64) mac_control->rings[i].rx_blocks[0].block_dma_addr,
2143 &bar0->prc_rxd0_n[i]);
2145 val64 = readq(&bar0->prc_ctrl_n[i]);
2146 if (nic->rxd_mode == RXD_MODE_1)
2147 val64 |= PRC_CTRL_RC_ENABLED;
2149 val64 |= PRC_CTRL_RC_ENABLED | PRC_CTRL_RING_MODE_3;
2150 if (nic->device_type == XFRAME_II_DEVICE)
2151 val64 |= PRC_CTRL_GROUP_READS;
2152 val64 &= ~PRC_CTRL_RXD_BACKOFF_INTERVAL(0xFFFFFF);
2153 val64 |= PRC_CTRL_RXD_BACKOFF_INTERVAL(0x1000);
2154 writeq(val64, &bar0->prc_ctrl_n[i]);
2157 if (nic->rxd_mode == RXD_MODE_3B) {
2158 /* Enabling 2 buffer mode by writing into Rx_pa_cfg reg. */
2159 val64 = readq(&bar0->rx_pa_cfg);
2160 val64 |= RX_PA_CFG_IGNORE_L2_ERR;
2161 writeq(val64, &bar0->rx_pa_cfg);
2164 if (vlan_tag_strip == 0) {
2165 val64 = readq(&bar0->rx_pa_cfg);
2166 val64 &= ~RX_PA_CFG_STRIP_VLAN_TAG;
2167 writeq(val64, &bar0->rx_pa_cfg);
2168 vlan_strip_flag = 0;
2172 * Enabling MC-RLDRAM. After enabling the device, we timeout
2173 * for around 100ms, which is approximately the time required
2174 * for the device to be ready for operation.
2176 val64 = readq(&bar0->mc_rldram_mrs);
2177 val64 |= MC_RLDRAM_QUEUE_SIZE_ENABLE | MC_RLDRAM_MRS_ENABLE;
2178 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF);
2179 val64 = readq(&bar0->mc_rldram_mrs);
2181 msleep(100); /* Delay by around 100 ms. */
2183 /* Enabling ECC Protection. */
2184 val64 = readq(&bar0->adapter_control);
2185 val64 &= ~ADAPTER_ECC_EN;
2186 writeq(val64, &bar0->adapter_control);
2189 * Verify if the device is ready to be enabled, if so enable
2192 val64 = readq(&bar0->adapter_status);
2193 if (!verify_xena_quiescence(nic)) {
2194 DBG_PRINT(ERR_DBG, "%s: device is not ready, ", dev->name);
2195 DBG_PRINT(ERR_DBG, "Adapter status reads: 0x%llx\n",
2196 (unsigned long long) val64);
2201 * With some switches, link might be already up at this point.
2202 * Because of this weird behavior, when we enable laser,
2203 * we may not get link. We need to handle this. We cannot
2204 * figure out which switch is misbehaving. So we are forced to
2205 * make a global change.
2208 /* Enabling Laser. */
2209 val64 = readq(&bar0->adapter_control);
2210 val64 |= ADAPTER_EOI_TX_ON;
2211 writeq(val64, &bar0->adapter_control);
2213 if (s2io_link_fault_indication(nic) == MAC_RMAC_ERR_TIMER) {
2215 * Dont see link state interrupts initally on some switches,
2216 * so directly scheduling the link state task here.
2218 schedule_work(&nic->set_link_task);
2220 /* SXE-002: Initialize link and activity LED */
2221 subid = nic->pdev->subsystem_device;
2222 if (((subid & 0xFF) >= 0x07) &&
2223 (nic->device_type == XFRAME_I_DEVICE)) {
2224 val64 = readq(&bar0->gpio_control);
2225 val64 |= 0x0000800000000000ULL;
2226 writeq(val64, &bar0->gpio_control);
2227 val64 = 0x0411040400000000ULL;
2228 writeq(val64, (void __iomem *)bar0 + 0x2700);
2234 * s2io_txdl_getskb - Get the skb from txdl, unmap and return skb
2236 static struct sk_buff *s2io_txdl_getskb(struct fifo_info *fifo_data, struct \
2237 TxD *txdlp, int get_off)
2239 struct s2io_nic *nic = fifo_data->nic;
2240 struct sk_buff *skb;
2245 if (txds->Host_Control == (u64)(long)nic->ufo_in_band_v) {
2246 pci_unmap_single(nic->pdev, (dma_addr_t)
2247 txds->Buffer_Pointer, sizeof(u64),
2252 skb = (struct sk_buff *) ((unsigned long)
2253 txds->Host_Control);
2255 memset(txdlp, 0, (sizeof(struct TxD) * fifo_data->max_txds));
2258 pci_unmap_single(nic->pdev, (dma_addr_t)
2259 txds->Buffer_Pointer,
2260 skb->len - skb->data_len,
2262 frg_cnt = skb_shinfo(skb)->nr_frags;
2265 for (j = 0; j < frg_cnt; j++, txds++) {
2266 skb_frag_t *frag = &skb_shinfo(skb)->frags[j];
2267 if (!txds->Buffer_Pointer)
2269 pci_unmap_page(nic->pdev, (dma_addr_t)
2270 txds->Buffer_Pointer,
2271 frag->size, PCI_DMA_TODEVICE);
2274 memset(txdlp,0, (sizeof(struct TxD) * fifo_data->max_txds));
2279 * free_tx_buffers - Free all queued Tx buffers
2280 * @nic : device private variable.
2282 * Free all queued Tx buffers.
2283 * Return Value: void
2286 static void free_tx_buffers(struct s2io_nic *nic)
2288 struct net_device *dev = nic->dev;
2289 struct sk_buff *skb;
2292 struct mac_info *mac_control;
2293 struct config_param *config;
2296 mac_control = &nic->mac_control;
2297 config = &nic->config;
2299 for (i = 0; i < config->tx_fifo_num; i++) {
2300 for (j = 0; j < config->tx_cfg[i].fifo_len - 1; j++) {
2301 txdp = (struct TxD *) \
2302 mac_control->fifos[i].list_info[j].list_virt_addr;
2303 skb = s2io_txdl_getskb(&mac_control->fifos[i], txdp, j);
2305 nic->mac_control.stats_info->sw_stat.mem_freed
2312 "%s:forcibly freeing %d skbs on FIFO%d\n",
2314 mac_control->fifos[i].tx_curr_get_info.offset = 0;
2315 mac_control->fifos[i].tx_curr_put_info.offset = 0;
2320 * stop_nic - To stop the nic
2321 * @nic ; device private variable.
2323 * This function does exactly the opposite of what the start_nic()
2324 * function does. This function is called to stop the device.
2329 static void stop_nic(struct s2io_nic *nic)
2331 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2332 register u64 val64 = 0;
2334 struct mac_info *mac_control;
2335 struct config_param *config;
2337 mac_control = &nic->mac_control;
2338 config = &nic->config;
2340 /* Disable all interrupts */
2341 en_dis_err_alarms(nic, ENA_ALL_INTRS, DISABLE_INTRS);
2342 interruptible = TX_TRAFFIC_INTR | RX_TRAFFIC_INTR;
2343 interruptible |= TX_PIC_INTR;
2344 en_dis_able_nic_intrs(nic, interruptible, DISABLE_INTRS);
2346 /* Clearing Adapter_En bit of ADAPTER_CONTROL Register */
2347 val64 = readq(&bar0->adapter_control);
2348 val64 &= ~(ADAPTER_CNTL_EN);
2349 writeq(val64, &bar0->adapter_control);
2353 * fill_rx_buffers - Allocates the Rx side skbs
2354 * @nic: device private variable
2355 * @ring_no: ring number
2357 * The function allocates Rx side skbs and puts the physical
2358 * address of these buffers into the RxD buffer pointers, so that the NIC
2359 * can DMA the received frame into these locations.
2360 * The NIC supports 3 receive modes, viz
2362 * 2. three buffer and
2363 * 3. Five buffer modes.
2364 * Each mode defines how many fragments the received frame will be split
2365 * up into by the NIC. The frame is split into L3 header, L4 Header,
2366 * L4 payload in three buffer mode and in 5 buffer mode, L4 payload itself
2367 * is split into 3 fragments. As of now only single buffer mode is
2370 * SUCCESS on success or an appropriate -ve value on failure.
2373 static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
2375 struct net_device *dev = nic->dev;
2376 struct sk_buff *skb;
2378 int off, off1, size, block_no, block_no1;
2381 struct mac_info *mac_control;
2382 struct config_param *config;
2385 unsigned long flags;
2386 struct RxD_t *first_rxdp = NULL;
2387 u64 Buffer0_ptr = 0, Buffer1_ptr = 0;
2390 struct swStat *stats = &nic->mac_control.stats_info->sw_stat;
2392 mac_control = &nic->mac_control;
2393 config = &nic->config;
2394 alloc_cnt = mac_control->rings[ring_no].pkt_cnt -
2395 atomic_read(&nic->rx_bufs_left[ring_no]);
2397 block_no1 = mac_control->rings[ring_no].rx_curr_get_info.block_index;
2398 off1 = mac_control->rings[ring_no].rx_curr_get_info.offset;
2399 while (alloc_tab < alloc_cnt) {
2400 block_no = mac_control->rings[ring_no].rx_curr_put_info.
2402 off = mac_control->rings[ring_no].rx_curr_put_info.offset;
2404 rxdp = mac_control->rings[ring_no].
2405 rx_blocks[block_no].rxds[off].virt_addr;
2407 if ((block_no == block_no1) && (off == off1) &&
2408 (rxdp->Host_Control)) {
2409 DBG_PRINT(INTR_DBG, "%s: Get and Put",
2411 DBG_PRINT(INTR_DBG, " info equated\n");
2414 if (off && (off == rxd_count[nic->rxd_mode])) {
2415 mac_control->rings[ring_no].rx_curr_put_info.
2417 if (mac_control->rings[ring_no].rx_curr_put_info.
2418 block_index == mac_control->rings[ring_no].
2420 mac_control->rings[ring_no].rx_curr_put_info.
2422 block_no = mac_control->rings[ring_no].
2423 rx_curr_put_info.block_index;
2424 if (off == rxd_count[nic->rxd_mode])
2426 mac_control->rings[ring_no].rx_curr_put_info.
2428 rxdp = mac_control->rings[ring_no].
2429 rx_blocks[block_no].block_virt_addr;
2430 DBG_PRINT(INTR_DBG, "%s: Next block at: %p\n",
2434 spin_lock_irqsave(&nic->put_lock, flags);
2435 mac_control->rings[ring_no].put_pos =
2436 (block_no * (rxd_count[nic->rxd_mode] + 1)) + off;
2437 spin_unlock_irqrestore(&nic->put_lock, flags);
2439 mac_control->rings[ring_no].put_pos =
2440 (block_no * (rxd_count[nic->rxd_mode] + 1)) + off;
2442 if ((rxdp->Control_1 & RXD_OWN_XENA) &&
2443 ((nic->rxd_mode == RXD_MODE_3B) &&
2444 (rxdp->Control_2 & s2BIT(0)))) {
2445 mac_control->rings[ring_no].rx_curr_put_info.
2449 /* calculate size of skb based on ring mode */
2450 size = dev->mtu + HEADER_ETHERNET_II_802_3_SIZE +
2451 HEADER_802_2_SIZE + HEADER_SNAP_SIZE;
2452 if (nic->rxd_mode == RXD_MODE_1)
2453 size += NET_IP_ALIGN;
2455 size = dev->mtu + ALIGN_SIZE + BUF0_LEN + 4;
2458 skb = dev_alloc_skb(size);
2460 DBG_PRINT(INFO_DBG, "%s: Out of ", dev->name);
2461 DBG_PRINT(INFO_DBG, "memory to allocate SKBs\n");
2464 first_rxdp->Control_1 |= RXD_OWN_XENA;
2466 nic->mac_control.stats_info->sw_stat. \
2467 mem_alloc_fail_cnt++;
2470 nic->mac_control.stats_info->sw_stat.mem_allocated
2472 if (nic->rxd_mode == RXD_MODE_1) {
2473 /* 1 buffer mode - normal operation mode */
2474 rxdp1 = (struct RxD1*)rxdp;
2475 memset(rxdp, 0, sizeof(struct RxD1));
2476 skb_reserve(skb, NET_IP_ALIGN);
2477 rxdp1->Buffer0_ptr = pci_map_single
2478 (nic->pdev, skb->data, size - NET_IP_ALIGN,
2479 PCI_DMA_FROMDEVICE);
2480 if( (rxdp1->Buffer0_ptr == 0) ||
2481 (rxdp1->Buffer0_ptr ==
2483 goto pci_map_failed;
2486 SET_BUFFER0_SIZE_1(size - NET_IP_ALIGN);
2488 } else if (nic->rxd_mode == RXD_MODE_3B) {
2491 * 2 buffer mode provides 128
2492 * byte aligned receive buffers.
2495 rxdp3 = (struct RxD3*)rxdp;
2496 /* save buffer pointers to avoid frequent dma mapping */
2497 Buffer0_ptr = rxdp3->Buffer0_ptr;
2498 Buffer1_ptr = rxdp3->Buffer1_ptr;
2499 memset(rxdp, 0, sizeof(struct RxD3));
2500 /* restore the buffer pointers for dma sync*/
2501 rxdp3->Buffer0_ptr = Buffer0_ptr;
2502 rxdp3->Buffer1_ptr = Buffer1_ptr;
2504 ba = &mac_control->rings[ring_no].ba[block_no][off];
2505 skb_reserve(skb, BUF0_LEN);
2506 tmp = (u64)(unsigned long) skb->data;
2509 skb->data = (void *) (unsigned long)tmp;
2510 skb_reset_tail_pointer(skb);
2512 if (!(rxdp3->Buffer0_ptr))
2513 rxdp3->Buffer0_ptr =
2514 pci_map_single(nic->pdev, ba->ba_0, BUF0_LEN,
2515 PCI_DMA_FROMDEVICE);
2517 pci_dma_sync_single_for_device(nic->pdev,
2518 (dma_addr_t) rxdp3->Buffer0_ptr,
2519 BUF0_LEN, PCI_DMA_FROMDEVICE);
2520 if( (rxdp3->Buffer0_ptr == 0) ||
2521 (rxdp3->Buffer0_ptr == DMA_ERROR_CODE))
2522 goto pci_map_failed;
2524 rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
2525 if (nic->rxd_mode == RXD_MODE_3B) {
2526 /* Two buffer mode */
2529 * Buffer2 will have L3/L4 header plus
2532 rxdp3->Buffer2_ptr = pci_map_single
2533 (nic->pdev, skb->data, dev->mtu + 4,
2534 PCI_DMA_FROMDEVICE);
2536 if( (rxdp3->Buffer2_ptr == 0) ||
2537 (rxdp3->Buffer2_ptr == DMA_ERROR_CODE))
2538 goto pci_map_failed;
2540 rxdp3->Buffer1_ptr =
2541 pci_map_single(nic->pdev,
2543 PCI_DMA_FROMDEVICE);
2544 if( (rxdp3->Buffer1_ptr == 0) ||
2545 (rxdp3->Buffer1_ptr == DMA_ERROR_CODE)) {
2548 (dma_addr_t)rxdp3->Buffer2_ptr,
2550 PCI_DMA_FROMDEVICE);
2551 goto pci_map_failed;
2553 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
2554 rxdp->Control_2 |= SET_BUFFER2_SIZE_3
2557 rxdp->Control_2 |= s2BIT(0);
2559 rxdp->Host_Control = (unsigned long) (skb);
2560 if (alloc_tab & ((1 << rxsync_frequency) - 1))
2561 rxdp->Control_1 |= RXD_OWN_XENA;
2563 if (off == (rxd_count[nic->rxd_mode] + 1))
2565 mac_control->rings[ring_no].rx_curr_put_info.offset = off;
2567 rxdp->Control_2 |= SET_RXD_MARKER;
2568 if (!(alloc_tab & ((1 << rxsync_frequency) - 1))) {
2571 first_rxdp->Control_1 |= RXD_OWN_XENA;
2575 atomic_inc(&nic->rx_bufs_left[ring_no]);
2580 /* Transfer ownership of first descriptor to adapter just before
2581 * exiting. Before that, use memory barrier so that ownership
2582 * and other fields are seen by adapter correctly.
2586 first_rxdp->Control_1 |= RXD_OWN_XENA;
2591 stats->pci_map_fail_cnt++;
2592 stats->mem_freed += skb->truesize;
2593 dev_kfree_skb_irq(skb);
2597 static void free_rxd_blk(struct s2io_nic *sp, int ring_no, int blk)
2599 struct net_device *dev = sp->dev;
2601 struct sk_buff *skb;
2603 struct mac_info *mac_control;
2608 mac_control = &sp->mac_control;
2609 for (j = 0 ; j < rxd_count[sp->rxd_mode]; j++) {
2610 rxdp = mac_control->rings[ring_no].
2611 rx_blocks[blk].rxds[j].virt_addr;
2612 skb = (struct sk_buff *)
2613 ((unsigned long) rxdp->Host_Control);
2617 if (sp->rxd_mode == RXD_MODE_1) {
2618 rxdp1 = (struct RxD1*)rxdp;
2619 pci_unmap_single(sp->pdev, (dma_addr_t)
2622 HEADER_ETHERNET_II_802_3_SIZE
2623 + HEADER_802_2_SIZE +
2625 PCI_DMA_FROMDEVICE);
2626 memset(rxdp, 0, sizeof(struct RxD1));
2627 } else if(sp->rxd_mode == RXD_MODE_3B) {
2628 rxdp3 = (struct RxD3*)rxdp;
2629 ba = &mac_control->rings[ring_no].
2631 pci_unmap_single(sp->pdev, (dma_addr_t)
2634 PCI_DMA_FROMDEVICE);
2635 pci_unmap_single(sp->pdev, (dma_addr_t)
2638 PCI_DMA_FROMDEVICE);
2639 pci_unmap_single(sp->pdev, (dma_addr_t)
2642 PCI_DMA_FROMDEVICE);
2643 memset(rxdp, 0, sizeof(struct RxD3));
2645 sp->mac_control.stats_info->sw_stat.mem_freed += skb->truesize;
2647 atomic_dec(&sp->rx_bufs_left[ring_no]);
2652 * free_rx_buffers - Frees all Rx buffers
2653 * @sp: device private variable.
2655 * This function will free all Rx buffers allocated by host.
2660 static void free_rx_buffers(struct s2io_nic *sp)
2662 struct net_device *dev = sp->dev;
2663 int i, blk = 0, buf_cnt = 0;
2664 struct mac_info *mac_control;
2665 struct config_param *config;
2667 mac_control = &sp->mac_control;
2668 config = &sp->config;
2670 for (i = 0; i < config->rx_ring_num; i++) {
2671 for (blk = 0; blk < rx_ring_sz[i]; blk++)
2672 free_rxd_blk(sp,i,blk);
2674 mac_control->rings[i].rx_curr_put_info.block_index = 0;
2675 mac_control->rings[i].rx_curr_get_info.block_index = 0;
2676 mac_control->rings[i].rx_curr_put_info.offset = 0;
2677 mac_control->rings[i].rx_curr_get_info.offset = 0;
2678 atomic_set(&sp->rx_bufs_left[i], 0);
2679 DBG_PRINT(INIT_DBG, "%s:Freed 0x%x Rx Buffers on ring%d\n",
2680 dev->name, buf_cnt, i);
2685 * s2io_poll - Rx interrupt handler for NAPI support
2686 * @napi : pointer to the napi structure.
2687 * @budget : The number of packets that were budgeted to be processed
2688 * during one pass through the 'Poll" function.
2690 * Comes into picture only if NAPI support has been incorporated. It does
2691 * the same thing that rx_intr_handler does, but not in a interrupt context
2692 * also It will process only a given number of packets.
2694 * 0 on success and 1 if there are No Rx packets to be processed.
2697 static int s2io_poll(struct napi_struct *napi, int budget)
2699 struct s2io_nic *nic = container_of(napi, struct s2io_nic, napi);
2700 struct net_device *dev = nic->dev;
2701 int pkt_cnt = 0, org_pkts_to_process;
2702 struct mac_info *mac_control;
2703 struct config_param *config;
2704 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2707 mac_control = &nic->mac_control;
2708 config = &nic->config;
2710 nic->pkts_to_process = budget;
2711 org_pkts_to_process = nic->pkts_to_process;
2713 writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
2714 readl(&bar0->rx_traffic_int);
2716 for (i = 0; i < config->rx_ring_num; i++) {
2717 rx_intr_handler(&mac_control->rings[i]);
2718 pkt_cnt = org_pkts_to_process - nic->pkts_to_process;
2719 if (!nic->pkts_to_process) {
2720 /* Quota for the current iteration has been met */
2725 netif_rx_complete(dev, napi);
2727 for (i = 0; i < config->rx_ring_num; i++) {
2728 if (fill_rx_buffers(nic, i) == -ENOMEM) {
2729 DBG_PRINT(INFO_DBG, "%s:Out of memory", dev->name);
2730 DBG_PRINT(INFO_DBG, " in Rx Poll!!\n");
2734 /* Re enable the Rx interrupts. */
2735 writeq(0x0, &bar0->rx_traffic_mask);
2736 readl(&bar0->rx_traffic_mask);
2740 for (i = 0; i < config->rx_ring_num; i++) {
2741 if (fill_rx_buffers(nic, i) == -ENOMEM) {
2742 DBG_PRINT(INFO_DBG, "%s:Out of memory", dev->name);
2743 DBG_PRINT(INFO_DBG, " in Rx Poll!!\n");
2750 #ifdef CONFIG_NET_POLL_CONTROLLER
2752 * s2io_netpoll - netpoll event handler entry point
2753 * @dev : pointer to the device structure.
2755 * This function will be called by upper layer to check for events on the
2756 * interface in situations where interrupts are disabled. It is used for
2757 * specific in-kernel networking tasks, such as remote consoles and kernel
2758 * debugging over the network (example netdump in RedHat).
2760 static void s2io_netpoll(struct net_device *dev)
2762 struct s2io_nic *nic = dev->priv;
2763 struct mac_info *mac_control;
2764 struct config_param *config;
2765 struct XENA_dev_config __iomem *bar0 = nic->bar0;
2766 u64 val64 = 0xFFFFFFFFFFFFFFFFULL;
2769 if (pci_channel_offline(nic->pdev))
2772 disable_irq(dev->irq);
2774 mac_control = &nic->mac_control;
2775 config = &nic->config;
2777 writeq(val64, &bar0->rx_traffic_int);
2778 writeq(val64, &bar0->tx_traffic_int);
2780 /* we need to free up the transmitted skbufs or else netpoll will
2781 * run out of skbs and will fail and eventually netpoll application such
2782 * as netdump will fail.
2784 for (i = 0; i < config->tx_fifo_num; i++)
2785 tx_intr_handler(&mac_control->fifos[i]);
2787 /* check for received packet and indicate up to network */
2788 for (i = 0; i < config->rx_ring_num; i++)
2789 rx_intr_handler(&mac_control->rings[i]);
2791 for (i = 0; i < config->rx_ring_num; i++) {
2792 if (fill_rx_buffers(nic, i) == -ENOMEM) {
2793 DBG_PRINT(INFO_DBG, "%s:Out of memory", dev->name);
2794 DBG_PRINT(INFO_DBG, " in Rx Netpoll!!\n");
2798 enable_irq(dev->irq);
2804 * rx_intr_handler - Rx interrupt handler
2805 * @nic: device private variable.
2807 * If the interrupt is because of a received frame or if the
2808 * receive ring contains fresh as yet un-processed frames,this function is
2809 * called. It picks out the RxD at which place the last Rx processing had
2810 * stopped and sends the skb to the OSM's Rx handler and then increments
2815 static void rx_intr_handler(struct ring_info *ring_data)
2817 struct s2io_nic *nic = ring_data->nic;
2818 struct net_device *dev = (struct net_device *) nic->dev;
2819 int get_block, put_block, put_offset;
2820 struct rx_curr_get_info get_info, put_info;
2822 struct sk_buff *skb;
2828 spin_lock(&nic->rx_lock);
2830 get_info = ring_data->rx_curr_get_info;
2831 get_block = get_info.block_index;
2832 memcpy(&put_info, &ring_data->rx_curr_put_info, sizeof(put_info));
2833 put_block = put_info.block_index;
2834 rxdp = ring_data->rx_blocks[get_block].rxds[get_info.offset].virt_addr;
2836 spin_lock(&nic->put_lock);
2837 put_offset = ring_data->put_pos;
2838 spin_unlock(&nic->put_lock);
2840 put_offset = ring_data->put_pos;
2842 while (RXD_IS_UP2DT(rxdp)) {
2844 * If your are next to put index then it's
2845 * FIFO full condition
2847 if ((get_block == put_block) &&
2848 (get_info.offset + 1) == put_info.offset) {
2849 DBG_PRINT(INTR_DBG, "%s: Ring Full\n",dev->name);
2852 skb = (struct sk_buff *) ((unsigned long)rxdp->Host_Control);
2854 DBG_PRINT(ERR_DBG, "%s: The skb is ",
2856 DBG_PRINT(ERR_DBG, "Null in Rx Intr\n");
2857 spin_unlock(&nic->rx_lock);
2860 if (nic->rxd_mode == RXD_MODE_1) {
2861 rxdp1 = (struct RxD1*)rxdp;
2862 pci_unmap_single(nic->pdev, (dma_addr_t)
2865 HEADER_ETHERNET_II_802_3_SIZE +
2868 PCI_DMA_FROMDEVICE);
2869 } else if (nic->rxd_mode == RXD_MODE_3B) {
2870 rxdp3 = (struct RxD3*)rxdp;
2871 pci_dma_sync_single_for_cpu(nic->pdev, (dma_addr_t)
2873 BUF0_LEN, PCI_DMA_FROMDEVICE);
2874 pci_unmap_single(nic->pdev, (dma_addr_t)
2877 PCI_DMA_FROMDEVICE);
2879 prefetch(skb->data);
2880 rx_osm_handler(ring_data, rxdp);
2882 ring_data->rx_curr_get_info.offset = get_info.offset;
2883 rxdp = ring_data->rx_blocks[get_block].
2884 rxds[get_info.offset].virt_addr;
2885 if (get_info.offset == rxd_count[nic->rxd_mode]) {
2886 get_info.offset = 0;
2887 ring_data->rx_curr_get_info.offset = get_info.offset;
2889 if (get_block == ring_data->block_count)
2891 ring_data->rx_curr_get_info.block_index = get_block;
2892 rxdp = ring_data->rx_blocks[get_block].block_virt_addr;
2895 nic->pkts_to_process -= 1;
2896 if ((napi) && (!nic->pkts_to_process))
2899 if ((indicate_max_pkts) && (pkt_cnt > indicate_max_pkts))
2903 /* Clear all LRO sessions before exiting */
2904 for (i=0; i<MAX_LRO_SESSIONS; i++) {
2905 struct lro *lro = &nic->lro0_n[i];
2907 update_L3L4_header(nic, lro);
2908 queue_rx_frame(lro->parent);
2909 clear_lro_session(lro);
2914 spin_unlock(&nic->rx_lock);
2918 * tx_intr_handler - Transmit interrupt handler
2919 * @nic : device private variable
2921 * If an interrupt was raised to indicate DMA complete of the
2922 * Tx packet, this function is called. It identifies the last TxD
2923 * whose buffer was freed and frees all skbs whose data have already
2924 * DMA'ed into the NICs internal memory.
2929 static void tx_intr_handler(struct fifo_info *fifo_data)
2931 struct s2io_nic *nic = fifo_data->nic;
2932 struct net_device *dev = (struct net_device *) nic->dev;
2933 struct tx_curr_get_info get_info, put_info;
2934 struct sk_buff *skb;
2938 get_info = fifo_data->tx_curr_get_info;
2939 memcpy(&put_info, &fifo_data->tx_curr_put_info, sizeof(put_info));
2940 txdlp = (struct TxD *) fifo_data->list_info[get_info.offset].
2942 while ((!(txdlp->Control_1 & TXD_LIST_OWN_XENA)) &&
2943 (get_info.offset != put_info.offset) &&
2944 (txdlp->Host_Control)) {
2945 /* Check for TxD errors */
2946 if (txdlp->Control_1 & TXD_T_CODE) {
2947 unsigned long long err;
2948 err = txdlp->Control_1 & TXD_T_CODE;
2950 nic->mac_control.stats_info->sw_stat.
2954 /* update t_code statistics */
2955 err_mask = err >> 48;
2958 nic->mac_control.stats_info->sw_stat.
2963 nic->mac_control.stats_info->sw_stat.
2964 tx_desc_abort_cnt++;
2968 nic->mac_control.stats_info->sw_stat.
2969 tx_parity_err_cnt++;
2973 nic->mac_control.stats_info->sw_stat.
2978 nic->mac_control.stats_info->sw_stat.
2979 tx_list_proc_err_cnt++;
2984 skb = s2io_txdl_getskb(fifo_data, txdlp, get_info.offset);
2986 DBG_PRINT(ERR_DBG, "%s: Null skb ",
2988 DBG_PRINT(ERR_DBG, "in Tx Free Intr\n");
2992 /* Updating the statistics block */
2993 nic->stats.tx_bytes += skb->len;
2994 nic->mac_control.stats_info->sw_stat.mem_freed += skb->truesize;
2995 dev_kfree_skb_irq(skb);
2998 if (get_info.offset == get_info.fifo_len + 1)
2999 get_info.offset = 0;
3000 txdlp = (struct TxD *) fifo_data->list_info
3001 [get_info.offset].list_virt_addr;
3002 fifo_data->tx_curr_get_info.offset =
3006 spin_lock(&nic->tx_lock);
3007 if (netif_queue_stopped(dev))
3008 netif_wake_queue(dev);
3009 spin_unlock(&nic->tx_lock);
3013 * s2io_mdio_write - Function to write in to MDIO registers
3014 * @mmd_type : MMD type value (PMA/PMD/WIS/PCS/PHYXS)
3015 * @addr : address value
3016 * @value : data value
3017 * @dev : pointer to net_device structure
3019 * This function is used to write values to the MDIO registers
3022 static void s2io_mdio_write(u32 mmd_type, u64 addr, u16 value, struct net_device *dev)
3025 struct s2io_nic *sp = dev->priv;
3026 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3028 //address transaction
3029 val64 = val64 | MDIO_MMD_INDX_ADDR(addr)
3030 | MDIO_MMD_DEV_ADDR(mmd_type)
3031 | MDIO_MMS_PRT_ADDR(0x0);
3032 writeq(val64, &bar0->mdio_control);
3033 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3034 writeq(val64, &bar0->mdio_control);
3039 val64 = val64 | MDIO_MMD_INDX_ADDR(addr)
3040 | MDIO_MMD_DEV_ADDR(mmd_type)
3041 | MDIO_MMS_PRT_ADDR(0x0)
3042 | MDIO_MDIO_DATA(value)
3043 | MDIO_OP(MDIO_OP_WRITE_TRANS);
3044 writeq(val64, &bar0->mdio_control);
3045 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3046 writeq(val64, &bar0->mdio_control);
3050 val64 = val64 | MDIO_MMD_INDX_ADDR(addr)
3051 | MDIO_MMD_DEV_ADDR(mmd_type)
3052 | MDIO_MMS_PRT_ADDR(0x0)
3053 | MDIO_OP(MDIO_OP_READ_TRANS);
3054 writeq(val64, &bar0->mdio_control);
3055 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3056 writeq(val64, &bar0->mdio_control);
3062 * s2io_mdio_read - Function to write in to MDIO registers
3063 * @mmd_type : MMD type value (PMA/PMD/WIS/PCS/PHYXS)
3064 * @addr : address value
3065 * @dev : pointer to net_device structure
3067 * This function is used to read values to the MDIO registers
3070 static u64 s2io_mdio_read(u32 mmd_type, u64 addr, struct net_device *dev)
3074 struct s2io_nic *sp = dev->priv;
3075 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3077 /* address transaction */
3078 val64 = val64 | MDIO_MMD_INDX_ADDR(addr)
3079 | MDIO_MMD_DEV_ADDR(mmd_type)
3080 | MDIO_MMS_PRT_ADDR(0x0);
3081 writeq(val64, &bar0->mdio_control);
3082 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3083 writeq(val64, &bar0->mdio_control);
3086 /* Data transaction */
3088 val64 = val64 | MDIO_MMD_INDX_ADDR(addr)
3089 | MDIO_MMD_DEV_ADDR(mmd_type)
3090 | MDIO_MMS_PRT_ADDR(0x0)
3091 | MDIO_OP(MDIO_OP_READ_TRANS);
3092 writeq(val64, &bar0->mdio_control);
3093 val64 = val64 | MDIO_CTRL_START_TRANS(0xE);
3094 writeq(val64, &bar0->mdio_control);
3097 /* Read the value from regs */
3098 rval64 = readq(&bar0->mdio_control);
3099 rval64 = rval64 & 0xFFFF0000;
3100 rval64 = rval64 >> 16;
3104 * s2io_chk_xpak_counter - Function to check the status of the xpak counters
3105 * @counter : couter value to be updated
3106 * @flag : flag to indicate the status
3107 * @type : counter type
3109 * This function is to check the status of the xpak counters value
3113 static void s2io_chk_xpak_counter(u64 *counter, u64 * regs_stat, u32 index, u16 flag, u16 type)
3118 for(i = 0; i <index; i++)
3123 *counter = *counter + 1;
3124 val64 = *regs_stat & mask;
3125 val64 = val64 >> (index * 0x2);
3132 DBG_PRINT(ERR_DBG, "Take Xframe NIC out of "
3133 "service. Excessive temperatures may "
3134 "result in premature transceiver "
3138 DBG_PRINT(ERR_DBG, "Take Xframe NIC out of "
3139 "service Excessive bias currents may "
3140 "indicate imminent laser diode "
3144 DBG_PRINT(ERR_DBG, "Take Xframe NIC out of "
3145 "service Excessive laser output "
3146 "power may saturate far-end "
3150 DBG_PRINT(ERR_DBG, "Incorrect XPAK Alarm "
3155 val64 = val64 << (index * 0x2);
3156 *regs_stat = (*regs_stat & (~mask)) | (val64);
3159 *regs_stat = *regs_stat & (~mask);
3164 * s2io_updt_xpak_counter - Function to update the xpak counters
3165 * @dev : pointer to net_device struct
3167 * This function is to upate the status of the xpak counters value
3170 static void s2io_updt_xpak_counter(struct net_device *dev)
3178 struct s2io_nic *sp = dev->priv;
3179 struct stat_block *stat_info = sp->mac_control.stats_info;
3181 /* Check the communication with the MDIO slave */
3184 val64 = s2io_mdio_read(MDIO_MMD_PMA_DEV_ADDR, addr, dev);
3185 if((val64 == 0xFFFF) || (val64 == 0x0000))
3187 DBG_PRINT(ERR_DBG, "ERR: MDIO slave access failed - "
3188 "Returned %llx\n", (unsigned long long)val64);
3192 /* Check for the expecte value of 2040 at PMA address 0x0000 */
3195 DBG_PRINT(ERR_DBG, "Incorrect value at PMA address 0x0000 - ");
3196 DBG_PRINT(ERR_DBG, "Returned: %llx- Expected: 0x2040\n",
3197 (unsigned long long)val64);
3201 /* Loading the DOM register to MDIO register */
3203 s2io_mdio_write(MDIO_MMD_PMA_DEV_ADDR, addr, val16, dev);
3204 val64 = s2io_mdio_read(MDIO_MMD_PMA_DEV_ADDR, addr, dev);
3206 /* Reading the Alarm flags */
3209 val64 = s2io_mdio_read(MDIO_MMD_PMA_DEV_ADDR, addr, dev);
3211 flag = CHECKBIT(val64, 0x7);
3213 s2io_chk_xpak_counter(&stat_info->xpak_stat.alarm_transceiver_temp_high,
3214 &stat_info->xpak_stat.xpak_regs_stat,
3217 if(CHECKBIT(val64, 0x6))
3218 stat_info->xpak_stat.alarm_transceiver_temp_low++;
3220 flag = CHECKBIT(val64, 0x3);
3222 s2io_chk_xpak_counter(&stat_info->xpak_stat.alarm_laser_bias_current_high,
3223 &stat_info->xpak_stat.xpak_regs_stat,
3226 if(CHECKBIT(val64, 0x2))
3227 stat_info->xpak_stat.alarm_laser_bias_current_low++;
3229 flag = CHECKBIT(val64, 0x1);
3231 s2io_chk_xpak_counter(&stat_info->xpak_stat.alarm_laser_output_power_high,
3232 &stat_info->xpak_stat.xpak_regs_stat,
3235 if(CHECKBIT(val64, 0x0))
3236 stat_info->xpak_stat.alarm_laser_output_power_low++;
3238 /* Reading the Warning flags */
3241 val64 = s2io_mdio_read(MDIO_MMD_PMA_DEV_ADDR, addr, dev);
3243 if(CHECKBIT(val64, 0x7))
3244 stat_info->xpak_stat.warn_transceiver_temp_high++;
3246 if(CHECKBIT(val64, 0x6))
3247 stat_info->xpak_stat.warn_transceiver_temp_low++;
3249 if(CHECKBIT(val64, 0x3))
3250 stat_info->xpak_stat.warn_laser_bias_current_high++;
3252 if(CHECKBIT(val64, 0x2))
3253 stat_info->xpak_stat.warn_laser_bias_current_low++;
3255 if(CHECKBIT(val64, 0x1))
3256 stat_info->xpak_stat.warn_laser_output_power_high++;
3258 if(CHECKBIT(val64, 0x0))
3259 stat_info->xpak_stat.warn_laser_output_power_low++;
3263 * wait_for_cmd_complete - waits for a command to complete.
3264 * @sp : private member of the device structure, which is a pointer to the
3265 * s2io_nic structure.
3266 * Description: Function that waits for a command to Write into RMAC
3267 * ADDR DATA registers to be completed and returns either success or
3268 * error depending on whether the command was complete or not.
3270 * SUCCESS on success and FAILURE on failure.
3273 static int wait_for_cmd_complete(void __iomem *addr, u64 busy_bit,
3276 int ret = FAILURE, cnt = 0, delay = 1;
3279 if ((bit_state != S2IO_BIT_RESET) && (bit_state != S2IO_BIT_SET))
3283 val64 = readq(addr);
3284 if (bit_state == S2IO_BIT_RESET) {
3285 if (!(val64 & busy_bit)) {
3290 if (!(val64 & busy_bit)) {
3307 * check_pci_device_id - Checks if the device id is supported
3309 * Description: Function to check if the pci device id is supported by driver.
3310 * Return value: Actual device id if supported else PCI_ANY_ID
3312 static u16 check_pci_device_id(u16 id)
3315 case PCI_DEVICE_ID_HERC_WIN:
3316 case PCI_DEVICE_ID_HERC_UNI:
3317 return XFRAME_II_DEVICE;
3318 case PCI_DEVICE_ID_S2IO_UNI:
3319 case PCI_DEVICE_ID_S2IO_WIN:
3320 return XFRAME_I_DEVICE;
3327 * s2io_reset - Resets the card.
3328 * @sp : private member of the device structure.
3329 * Description: Function to Reset the card. This function then also
3330 * restores the previously saved PCI configuration space registers as
3331 * the card reset also resets the configuration space.
3336 static void s2io_reset(struct s2io_nic * sp)
3338 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3343 unsigned long long up_cnt, down_cnt, up_time, down_time, reset_cnt;
3344 unsigned long long mem_alloc_cnt, mem_free_cnt, watchdog_cnt;
3346 DBG_PRINT(INIT_DBG,"%s - Resetting XFrame card %s\n",
3347 __FUNCTION__, sp->dev->name);
3349 /* Back up the PCI-X CMD reg, dont want to lose MMRBC, OST settings */
3350 pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER, &(pci_cmd));
3352 val64 = SW_RESET_ALL;
3353 writeq(val64, &bar0->sw_reset);
3354 if (strstr(sp->product_name, "CX4")) {
3358 for (i = 0; i < S2IO_MAX_PCI_CONFIG_SPACE_REINIT; i++) {
3360 /* Restore the PCI state saved during initialization. */
3361 pci_restore_state(sp->pdev);
3362 pci_read_config_word(sp->pdev, 0x2, &val16);
3363 if (check_pci_device_id(val16) != (u16)PCI_ANY_ID)
3368 if (check_pci_device_id(val16) == (u16)PCI_ANY_ID) {
3369 DBG_PRINT(ERR_DBG,"%s SW_Reset failed!\n", __FUNCTION__);
3372 pci_write_config_word(sp->pdev, PCIX_COMMAND_REGISTER, pci_cmd);
3376 /* Set swapper to enable I/O register access */
3377 s2io_set_swapper(sp);
3379 /* Restore the MSIX table entries from local variables */
3380 restore_xmsi_data(sp);
3382 /* Clear certain PCI/PCI-X fields after reset */
3383 if (sp->device_type == XFRAME_II_DEVICE) {
3384 /* Clear "detected parity error" bit */
3385 pci_write_config_word(sp->pdev, PCI_STATUS, 0x8000);
3387 /* Clearing PCIX Ecc status register */
3388 pci_write_config_dword(sp->pdev, 0x68, 0x7C);
3390 /* Clearing PCI_STATUS error reflected here */
3391 writeq(s2BIT(62), &bar0->txpic_int_reg);
3394 /* Reset device statistics maintained by OS */
3395 memset(&sp->stats, 0, sizeof (struct net_device_stats));
3397 up_cnt = sp->mac_control.stats_info->sw_stat.link_up_cnt;
3398 down_cnt = sp->mac_control.stats_info->sw_stat.link_down_cnt;
3399 up_time = sp->mac_control.stats_info->sw_stat.link_up_time;
3400 down_time = sp->mac_control.stats_info->sw_stat.link_down_time;
3401 reset_cnt = sp->mac_control.stats_info->sw_stat.soft_reset_cnt;
3402 mem_alloc_cnt = sp->mac_control.stats_info->sw_stat.mem_allocated;
3403 mem_free_cnt = sp->mac_control.stats_info->sw_stat.mem_freed;
3404 watchdog_cnt = sp->mac_control.stats_info->sw_stat.watchdog_timer_cnt;
3405 /* save link up/down time/cnt, reset/memory/watchdog cnt */
3406 memset(sp->mac_control.stats_info, 0, sizeof(struct stat_block));
3407 /* restore link up/down time/cnt, reset/memory/watchdog cnt */
3408 sp->mac_control.stats_info->sw_stat.link_up_cnt = up_cnt;
3409 sp->mac_control.stats_info->sw_stat.link_down_cnt = down_cnt;
3410 sp->mac_control.stats_info->sw_stat.link_up_time = up_time;
3411 sp->mac_control.stats_info->sw_stat.link_down_time = down_time;
3412 sp->mac_control.stats_info->sw_stat.soft_reset_cnt = reset_cnt;
3413 sp->mac_control.stats_info->sw_stat.mem_allocated = mem_alloc_cnt;
3414 sp->mac_control.stats_info->sw_stat.mem_freed = mem_free_cnt;
3415 sp->mac_control.stats_info->sw_stat.watchdog_timer_cnt = watchdog_cnt;
3417 /* SXE-002: Configure link and activity LED to turn it off */
3418 subid = sp->pdev->subsystem_device;
3419 if (((subid & 0xFF) >= 0x07) &&
3420 (sp->device_type == XFRAME_I_DEVICE)) {
3421 val64 = readq(&bar0->gpio_control);
3422 val64 |= 0x0000800000000000ULL;
3423 writeq(val64, &bar0->gpio_control);
3424 val64 = 0x0411040400000000ULL;
3425 writeq(val64, (void __iomem *)bar0 + 0x2700);
3429 * Clear spurious ECC interrupts that would have occured on
3430 * XFRAME II cards after reset.
3432 if (sp->device_type == XFRAME_II_DEVICE) {
3433 val64 = readq(&bar0->pcc_err_reg);
3434 writeq(val64, &bar0->pcc_err_reg);
3437 /* restore the previously assigned mac address */
3438 do_s2io_prog_unicast(sp->dev, (u8 *)&sp->def_mac_addr[0].mac_addr);
3440 sp->device_enabled_once = FALSE;
3444 * s2io_set_swapper - to set the swapper controle on the card
3445 * @sp : private member of the device structure,
3446 * pointer to the s2io_nic structure.
3447 * Description: Function to set the swapper control on the card
3448 * correctly depending on the 'endianness' of the system.
3450 * SUCCESS on success and FAILURE on failure.
3453 static int s2io_set_swapper(struct s2io_nic * sp)
3455 struct net_device *dev = sp->dev;
3456 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3457 u64 val64, valt, valr;
3460 * Set proper endian settings and verify the same by reading
3461 * the PIF Feed-back register.
3464 val64 = readq(&bar0->pif_rd_swapper_fb);
3465 if (val64 != 0x0123456789ABCDEFULL) {
3467 u64 value[] = { 0xC30000C3C30000C3ULL, /* FE=1, SE=1 */
3468 0x8100008181000081ULL, /* FE=1, SE=0 */
3469 0x4200004242000042ULL, /* FE=0, SE=1 */
3470 0}; /* FE=0, SE=0 */
3473 writeq(value[i], &bar0->swapper_ctrl);
3474 val64 = readq(&bar0->pif_rd_swapper_fb);
3475 if (val64 == 0x0123456789ABCDEFULL)
3480 DBG_PRINT(ERR_DBG, "%s: Endian settings are wrong, ",
3482 DBG_PRINT(ERR_DBG, "feedback read %llx\n",
3483 (unsigned long long) val64);
3488 valr = readq(&bar0->swapper_ctrl);
3491 valt = 0x0123456789ABCDEFULL;
3492 writeq(valt, &bar0->xmsi_address);
3493 val64 = readq(&bar0->xmsi_address);
3497 u64 value[] = { 0x00C3C30000C3C300ULL, /* FE=1, SE=1 */
3498 0x0081810000818100ULL, /* FE=1, SE=0 */
3499 0x0042420000424200ULL, /* FE=0, SE=1 */
3500 0}; /* FE=0, SE=0 */
3503 writeq((value[i] | valr), &bar0->swapper_ctrl);
3504 writeq(valt, &bar0->xmsi_address);
3505 val64 = readq(&bar0->xmsi_address);
3511 unsigned long long x = val64;
3512 DBG_PRINT(ERR_DBG, "Write failed, Xmsi_addr ");
3513 DBG_PRINT(ERR_DBG, "reads:0x%llx\n", x);
3517 val64 = readq(&bar0->swapper_ctrl);
3518 val64 &= 0xFFFF000000000000ULL;
3522 * The device by default set to a big endian format, so a
3523 * big endian driver need not set anything.
3525 val64 |= (SWAPPER_CTRL_TXP_FE |
3526 SWAPPER_CTRL_TXP_SE |
3527 SWAPPER_CTRL_TXD_R_FE |
3528 SWAPPER_CTRL_TXD_W_FE |
3529 SWAPPER_CTRL_TXF_R_FE |
3530 SWAPPER_CTRL_RXD_R_FE |
3531 SWAPPER_CTRL_RXD_W_FE |
3532 SWAPPER_CTRL_RXF_W_FE |
3533 SWAPPER_CTRL_XMSI_FE |
3534 SWAPPER_CTRL_STATS_FE | SWAPPER_CTRL_STATS_SE);
3535 if (sp->config.intr_type == INTA)
3536 val64 |= SWAPPER_CTRL_XMSI_SE;
3537 writeq(val64, &bar0->swapper_ctrl);
3540 * Initially we enable all bits to make it accessible by the
3541 * driver, then we selectively enable only those bits that
3544 val64 |= (SWAPPER_CTRL_TXP_FE |
3545 SWAPPER_CTRL_TXP_SE |
3546 SWAPPER_CTRL_TXD_R_FE |
3547 SWAPPER_CTRL_TXD_R_SE |
3548 SWAPPER_CTRL_TXD_W_FE |
3549 SWAPPER_CTRL_TXD_W_SE |
3550 SWAPPER_CTRL_TXF_R_FE |
3551 SWAPPER_CTRL_RXD_R_FE |
3552 SWAPPER_CTRL_RXD_R_SE |
3553 SWAPPER_CTRL_RXD_W_FE |
3554 SWAPPER_CTRL_RXD_W_SE |
3555 SWAPPER_CTRL_RXF_W_FE |
3556 SWAPPER_CTRL_XMSI_FE |
3557 SWAPPER_CTRL_STATS_FE | SWAPPER_CTRL_STATS_SE);
3558 if (sp->config.intr_type == INTA)
3559 val64 |= SWAPPER_CTRL_XMSI_SE;
3560 writeq(val64, &bar0->swapper_ctrl);
3562 val64 = readq(&bar0->swapper_ctrl);
3565 * Verifying if endian settings are accurate by reading a
3566 * feedback register.
3568 val64 = readq(&bar0->pif_rd_swapper_fb);
3569 if (val64 != 0x0123456789ABCDEFULL) {
3570 /* Endian settings are incorrect, calls for another dekko. */
3571 DBG_PRINT(ERR_DBG, "%s: Endian settings are wrong, ",
3573 DBG_PRINT(ERR_DBG, "feedback read %llx\n",
3574 (unsigned long long) val64);
3581 static int wait_for_msix_trans(struct s2io_nic *nic, int i)
3583 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3585 int ret = 0, cnt = 0;
3588 val64 = readq(&bar0->xmsi_access);
3589 if (!(val64 & s2BIT(15)))
3595 DBG_PRINT(ERR_DBG, "XMSI # %d Access failed\n", i);
3602 static void restore_xmsi_data(struct s2io_nic *nic)
3604 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3608 for (i=0; i < MAX_REQUESTED_MSI_X; i++) {
3609 writeq(nic->msix_info[i].addr, &bar0->xmsi_address);
3610 writeq(nic->msix_info[i].data, &bar0->xmsi_data);
3611 val64 = (s2BIT(7) | s2BIT(15) | vBIT(i, 26, 6));
3612 writeq(val64, &bar0->xmsi_access);
3613 if (wait_for_msix_trans(nic, i)) {
3614 DBG_PRINT(ERR_DBG, "failed in %s\n", __FUNCTION__);
3620 static void store_xmsi_data(struct s2io_nic *nic)
3622 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3623 u64 val64, addr, data;
3626 /* Store and display */
3627 for (i=0; i < MAX_REQUESTED_MSI_X; i++) {
3628 val64 = (s2BIT(15) | vBIT(i, 26, 6));
3629 writeq(val64, &bar0->xmsi_access);
3630 if (wait_for_msix_trans(nic, i)) {
3631 DBG_PRINT(ERR_DBG, "failed in %s\n", __FUNCTION__);
3634 addr = readq(&bar0->xmsi_address);
3635 data = readq(&bar0->xmsi_data);
3637 nic->msix_info[i].addr = addr;
3638 nic->msix_info[i].data = data;
3643 static int s2io_enable_msi_x(struct s2io_nic *nic)
3645 struct XENA_dev_config __iomem *bar0 = nic->bar0;
3647 u16 msi_control; /* Temp variable */
3648 int ret, i, j, msix_indx = 1;
3650 nic->entries = kcalloc(MAX_REQUESTED_MSI_X, sizeof(struct msix_entry),
3652 if (!nic->entries) {
3653 DBG_PRINT(INFO_DBG, "%s: Memory allocation failed\n", \
3655 nic->mac_control.stats_info->sw_stat.mem_alloc_fail_cnt++;
3658 nic->mac_control.stats_info->sw_stat.mem_allocated
3659 += (MAX_REQUESTED_MSI_X * sizeof(struct msix_entry));
3662 kcalloc(MAX_REQUESTED_MSI_X, sizeof(struct s2io_msix_entry),
3664 if (!nic->s2io_entries) {
3665 DBG_PRINT(INFO_DBG, "%s: Memory allocation failed\n",
3667 nic->mac_control.stats_info->sw_stat.mem_alloc_fail_cnt++;
3668 kfree(nic->entries);
3669 nic->mac_control.stats_info->sw_stat.mem_freed
3670 += (MAX_REQUESTED_MSI_X * sizeof(struct msix_entry));
3673 nic->mac_control.stats_info->sw_stat.mem_allocated
3674 += (MAX_REQUESTED_MSI_X * sizeof(struct s2io_msix_entry));
3676 for (i=0; i< MAX_REQUESTED_MSI_X; i++) {
3677 nic->entries[i].entry = i;
3678 nic->s2io_entries[i].entry = i;
3679 nic->s2io_entries[i].arg = NULL;
3680 nic->s2io_entries[i].in_use = 0;
3683 tx_mat = readq(&bar0->tx_mat0_n[0]);
3684 for (i=0; i<nic->config.tx_fifo_num; i++, msix_indx++) {
3685 tx_mat |= TX_MAT_SET(i, msix_indx);
3686 nic->s2io_entries[msix_indx].arg = &nic->mac_control.fifos[i];
3687 nic->s2io_entries[msix_indx].type = MSIX_FIFO_TYPE;
3688 nic->s2io_entries[msix_indx].in_use = MSIX_FLG;
3690 writeq(tx_mat, &bar0->tx_mat0_n[0]);
3692 rx_mat = readq(&bar0->rx_mat);
3693 for (j = 0; j < nic->config.rx_ring_num; j++, msix_indx++) {
3694 rx_mat |= RX_MAT_SET(j, msix_indx);
3695 nic->s2io_entries[msix_indx].arg
3696 = &nic->mac_control.rings[j];
3697 nic->s2io_entries[msix_indx].type = MSIX_RING_TYPE;
3698 nic->s2io_entries[msix_indx].in_use = MSIX_FLG;
3700 writeq(rx_mat, &bar0->rx_mat);
3702 nic->avail_msix_vectors = 0;
3703 ret = pci_enable_msix(nic->pdev, nic->entries, MAX_REQUESTED_MSI_X);
3704 /* We fail init if error or we get less vectors than min required */
3705 if (ret >= (nic->config.tx_fifo_num + nic->config.rx_ring_num + 1)) {
3706 nic->avail_msix_vectors = ret;
3707 ret = pci_enable_msix(nic->pdev, nic->entries, ret);
3710 DBG_PRINT(ERR_DBG, "%s: Enabling MSIX failed\n", nic->dev->name);
3711 kfree(nic->entries);
3712 nic->mac_control.stats_info->sw_stat.mem_freed
3713 += (MAX_REQUESTED_MSI_X * sizeof(struct msix_entry));
3714 kfree(nic->s2io_entries);
3715 nic->mac_control.stats_info->sw_stat.mem_freed
3716 += (MAX_REQUESTED_MSI_X * sizeof(struct s2io_msix_entry));
3717 nic->entries = NULL;
3718 nic->s2io_entries = NULL;
3719 nic->avail_msix_vectors = 0;
3722 if (!nic->avail_msix_vectors)
3723 nic->avail_msix_vectors = MAX_REQUESTED_MSI_X;
3726 * To enable MSI-X, MSI also needs to be enabled, due to a bug
3727 * in the herc NIC. (Temp change, needs to be removed later)
3729 pci_read_config_word(nic->pdev, 0x42, &msi_control);
3730 msi_control |= 0x1; /* Enable MSI */
3731 pci_write_config_word(nic->pdev, 0x42, msi_control);
3736 /* Handle software interrupt used during MSI(X) test */
3737 static irqreturn_t s2io_test_intr(int irq, void *dev_id)
3739 struct s2io_nic *sp = dev_id;
3741 sp->msi_detected = 1;
3742 wake_up(&sp->msi_wait);
3747 /* Test interrupt path by forcing a a software IRQ */
3748 static int s2io_test_msi(struct s2io_nic *sp)
3750 struct pci_dev *pdev = sp->pdev;
3751 struct XENA_dev_config __iomem *bar0 = sp->bar0;
3755 err = request_irq(sp->entries[1].vector, s2io_test_intr, 0,
3758 DBG_PRINT(ERR_DBG, "%s: PCI %s: cannot assign irq %d\n",
3759 sp->dev->name, pci_name(pdev), pdev->irq);
3763 init_waitqueue_head (&sp->msi_wait);
3764 sp->msi_detected = 0;
3766 saved64 = val64 = readq(&bar0->scheduled_int_ctrl);
3767 val64 |= SCHED_INT_CTRL_ONE_SHOT;
3768 val64 |= SCHED_INT_CTRL_TIMER_EN;
3769 val64 |= SCHED_INT_CTRL_INT2MSI(1);
3770 writeq(val64, &bar0->scheduled_int_ctrl);
3772 wait_event_timeout(sp->msi_wait, sp->msi_detected, HZ/10);
3774 if (!sp->msi_detected) {
3775 /* MSI(X) test failed, go back to INTx mode */
3776 DBG_PRINT(ERR_DBG, "%s: PCI %s: No interrupt was generated"
3777 "using MSI(X) during test\n", sp->dev->name,
3783 free_irq(sp->entries[1].vector, sp);
3785 writeq(saved64, &bar0->scheduled_int_ctrl);
3790 static void remove_msix_isr(struct s2io_nic *sp)
3795 for (i = 0; i < MAX_REQUESTED_MSI_X; i++) {
3796 if (sp->s2io_entries[i].in_use ==
3797 MSIX_REGISTERED_SUCCESS) {
3798 int vector = sp->entries[i].vector;
3799 void *arg = sp->s2io_entries[i].arg;
3800 free_irq(vector, arg);
3805 kfree(sp->s2io_entries);
3807 sp->s2io_entries = NULL;
3809 pci_read_config_word(sp->pdev, 0x42, &msi_control);
3810 msi_control &= 0xFFFE; /* Disable MSI */
3811 pci_write_config_word(sp->pdev, 0x42, msi_control);
3813 pci_disable_msix(sp->pdev);
3816 static void remove_inta_isr(struct s2io_nic *sp)
3818 struct net_device *dev = sp->dev;
3820 free_irq(sp->pdev->irq, dev);
3823 /* ********************************************************* *
3824 * Functions defined below concern the OS part of the driver *
3825 * ********************************************************* */
3828 * s2io_open - open entry point of the driver
3829 * @dev : pointer to the device structure.
3831 * This function is the open entry point of the driver. It mainly calls a
3832 * function to allocate Rx buffers and inserts them into the buffer
3833 * descriptors and then enables the Rx part of the NIC.
3835 * 0 on success and an appropriate (-)ve integer as defined in errno.h
3839 static int s2io_open(struct net_device *dev)
3841 struct s2io_nic *sp = dev->priv;
3845 * Make sure you have link off by default every time
3846 * Nic is initialized
3848 netif_carrier_off(dev);
3849 sp->last_link_state = 0;
3851 if (sp->config.intr_type == MSI_X) {
3852 int ret = s2io_enable_msi_x(sp);
3855 ret = s2io_test_msi(sp);
3856 /* rollback MSI-X, will re-enable during add_isr() */
3857 remove_msix_isr(sp);
3862 "%s: MSI-X requested but failed to enable\n",
3864 sp->config.intr_type = INTA;
3868 /* NAPI doesn't work well with MSI(X) */
3869 if (sp->config.intr_type != INTA) {
3871 sp->config.napi = 0;
3874 /* Initialize H/W and enable interrupts */
3875 err = s2io_card_up(sp);
3877 DBG_PRINT(ERR_DBG, "%s: H/W initialization failed\n",
3879 goto hw_init_failed;
3882 if (do_s2io_prog_unicast(dev, dev->dev_addr) == FAILURE) {
3883 DBG_PRINT(ERR_DBG, "Set Mac Address Failed\n");
3886 goto hw_init_failed;
3889 netif_start_queue(dev);
3893 if (sp->config.intr_type == MSI_X) {
3896 sp->mac_control.stats_info->sw_stat.mem_freed
3897 += (MAX_REQUESTED_MSI_X * sizeof(struct msix_entry));
3899 if (sp->s2io_entries) {
3900 kfree(sp->s2io_entries);
3901 sp->mac_control.stats_info->sw_stat.mem_freed
3902 += (MAX_REQUESTED_MSI_X * sizeof(struct s2io_msix_entry));
3909 * s2io_close -close entry point of the driver
3910 * @dev : device pointer.
3912 * This is the stop entry point of the driver. It needs to undo exactly
3913 * whatever was done by the open entry point,thus it's usually referred to
3914 * as the close function.Among other things this function mainly stops the
3915 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
3917 * 0 on success and an appropriate (-)ve integer as defined in errno.h
3921 static int s2io_close(struct net_device *dev)
3923 struct s2io_nic *sp = dev->priv;
3925 /* Return if the device is already closed *
3926 * Can happen when s2io_card_up failed in change_mtu *
3928 if (!is_s2io_card_up(sp))
3931 netif_stop_queue(dev);
3932 /* Reset card, kill tasklet and free Tx and Rx buffers. */
3939 * s2io_xmit - Tx entry point of te driver
3940 * @skb : the socket buffer containing the Tx data.
3941 * @dev : device pointer.
3943 * This function is the Tx entry point of the driver. S2IO NIC supports
3944 * certain protocol assist features on Tx side, namely CSO, S/G, LSO.
3945 * NOTE: when device cant queue the pkt,just the trans_start variable will
3948 * 0 on success & 1 on failure.
3951 static int s2io_xmit(struct sk_buff *skb, struct net_device *dev)
3953 struct s2io_nic *sp = dev->priv;
3954 u16 frg_cnt, frg_len, i, queue, queue_len, put_off, get_off;
3957 struct TxFIFO_element __iomem *tx_fifo;
3958 unsigned long flags;
3960 int vlan_priority = 0;
3961 struct mac_info *mac_control;
3962 struct config_param *config;
3964 struct swStat *stats = &sp->mac_control.stats_info->sw_stat;
3966 mac_control = &sp->mac_control;
3967 config = &sp->config;
3969 DBG_PRINT(TX_DBG, "%s: In Neterion Tx routine\n", dev->name);
3971 if (unlikely(skb->len <= 0)) {
3972 DBG_PRINT(TX_DBG, "%s:Buffer has no data..\n", dev->name);
3973 dev_kfree_skb_any(skb);
3977 spin_lock_irqsave(&sp->tx_lock, flags);
3978 if (!is_s2io_card_up(sp)) {
3979 DBG_PRINT(TX_DBG, "%s: Card going down for reset\n",
3981 spin_unlock_irqrestore(&sp->tx_lock, flags);
3987 /* Get Fifo number to Transmit based on vlan priority */
3988 if (sp->vlgrp && vlan_tx_tag_present(skb)) {
3989 vlan_tag = vlan_tx_tag_get(skb);
3990 vlan_priority = vlan_tag >> 13;
3991 queue = config->fifo_mapping[vlan_priority];
3994 put_off = (u16) mac_control->fifos[queue].tx_curr_put_info.offset;
3995 get_off = (u16) mac_control->fifos[queue].tx_curr_get_info.offset;
3996 txdp = (struct TxD *) mac_control->fifos[queue].list_info[put_off].
3999 queue_len = mac_control->fifos[queue].tx_curr_put_info.fifo_len + 1;
4000 /* Avoid "put" pointer going beyond "get" pointer */
4001 if (txdp->Host_Control ||
4002 ((put_off+1) == queue_len ? 0 : (put_off+1)) == get_off) {
4003 DBG_PRINT(TX_DBG, "Error in xmit, No free TXDs.\n");
4004 netif_stop_queue(dev);
4006 spin_unlock_irqrestore(&sp->tx_lock, flags);
4010 offload_type = s2io_offload_type(skb);
4011 if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
4012 txdp->Control_1 |= TXD_TCP_LSO_EN;
4013 txdp->Control_1 |= TXD_TCP_LSO_MSS(s2io_tcp_mss(skb));
4015 if (skb->ip_summed == CHECKSUM_PARTIAL) {
4017 (TXD_TX_CKO_IPV4_EN | TXD_TX_CKO_TCP_EN |
4020 txdp->Control_1 |= TXD_GATHER_CODE_FIRST;
4021 txdp->Control_1 |= TXD_LIST_OWN_XENA;
4022 txdp->Control_2 |= config->tx_intr_type;
4024 if (sp->vlgrp && vlan_tx_tag_present(skb)) {
4025 txdp->Control_2 |= TXD_VLAN_ENABLE;
4026 txdp->Control_2 |= TXD_VLAN_TAG(vlan_tag);
4029 frg_len = skb->len - skb->data_len;
4030 if (offload_type == SKB_GSO_UDP) {
4033 ufo_size = s2io_udp_mss(skb);
4035 txdp->Control_1 |= TXD_UFO_EN;
4036 txdp->Control_1 |= TXD_UFO_MSS(ufo_size);
4037 txdp->Control_1 |= TXD_BUFFER0_SIZE(8);
4039 sp->ufo_in_band_v[put_off] =
4040 (u64)skb_shinfo(skb)->ip6_frag_id;
4042 sp->ufo_in_band_v[put_off] =
4043 (u64)skb_shinfo(skb)->ip6_frag_id << 32;
4045 txdp->Host_Control = (unsigned long)sp->ufo_in_band_v;
4046 txdp->Buffer_Pointer = pci_map_single(sp->pdev,
4048 sizeof(u64), PCI_DMA_TODEVICE);
4049 if((txdp->Buffer_Pointer == 0) ||
4050 (txdp->Buffer_Pointer == DMA_ERROR_CODE))
4051 goto pci_map_failed;
4055 txdp->Buffer_Pointer = pci_map_single
4056 (sp->pdev, skb->data, frg_len, PCI_DMA_TODEVICE);
4057 if((txdp->Buffer_Pointer == 0) ||
4058 (txdp->Buffer_Pointer == DMA_ERROR_CODE))
4059 goto pci_map_failed;
4061 txdp->Host_Control = (unsigned long) skb;
4062 txdp->Control_1 |= TXD_BUFFER0_SIZE(frg_len);
4063 if (offload_type == SKB_GSO_UDP)
4064 txdp->Control_1 |= TXD_UFO_EN;
4066 frg_cnt = skb_shinfo(skb)->nr_frags;
4067 /* For fragmented SKB. */
4068 for (i = 0; i < frg_cnt; i++) {
4069 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
4070 /* A '0' length fragment will be ignored */
4074 txdp->Buffer_Pointer = (u64) pci_map_page
4075 (sp->pdev, frag->page, frag->page_offset,
4076 frag->size, PCI_DMA_TODEVICE);
4077 txdp->Control_1 = TXD_BUFFER0_SIZE(frag->size);
4078 if (offload_type == SKB_GSO_UDP)
4079 txdp->Control_1 |= TXD_UFO_EN;
4081 txdp->Control_1 |= TXD_GATHER_CODE_LAST;
4083 if (offload_type == SKB_GSO_UDP)
4084 frg_cnt++; /* as Txd0 was used for inband header */
4086 tx_fifo = mac_control->tx_FIFO_start[queue];
4087 val64 = mac_control->fifos[queue].list_info[put_off].list_phy_addr;
4088 writeq(val64, &tx_fifo->TxDL_Pointer);
4090 val64 = (TX_FIFO_LAST_TXD_NUM(frg_cnt) | TX_FIFO_FIRST_LIST |
4093 val64 |= TX_FIFO_SPECIAL_FUNC;
4095 writeq(val64, &tx_fifo->List_Control);
4100 if (put_off == mac_control->fifos[queue].tx_curr_put_info.fifo_len + 1)
4102 mac_control->fifos[queue].tx_curr_put_info.offset = put_off;
4104 /* Avoid "put" pointer going beyond "get" pointer */
4105 if (((put_off+1) == queue_len ? 0 : (put_off+1)) == get_off) {
4106 sp->mac_control.stats_info->sw_stat.fifo_full_cnt++;
4108 "No free TxDs for xmit, Put: 0x%x Get:0x%x\n",
4110 netif_stop_queue(dev);
4112 mac_control->stats_info->sw_stat.mem_allocated += skb->truesize;
4113 dev->trans_start = jiffies;
4114 spin_unlock_irqrestore(&sp->tx_lock, flags);
4118 stats->pci_map_fail_cnt++;
4119 netif_stop_queue(dev);
4120 stats->mem_freed += skb->truesize;
4122 spin_unlock_irqrestore(&sp->tx_lock, flags);
4127 s2io_alarm_handle(unsigned long data)
4129 struct s2io_nic *sp = (struct s2io_nic *)data;
4130 struct net_device *dev = sp->dev;
4132 s2io_handle_errors(dev);
4133 mod_timer(&sp->alarm_timer, jiffies + HZ / 2);
4136 static int s2io_chk_rx_buffers(struct s2io_nic *sp, int rng_n)
4138 int rxb_size, level;
4141 rxb_size = atomic_read(&sp->rx_bufs_left[rng_n]);
4142 level = rx_buffer_level(sp, rxb_size, rng_n);
4144 if ((level == PANIC) && (!TASKLET_IN_USE)) {
4146 DBG_PRINT(INTR_DBG, "%s: Rx BD hit ", __FUNCTION__);
4147 DBG_PRINT(INTR_DBG, "PANIC levels\n");
4148 if ((ret = fill_rx_buffers(sp, rng_n)) == -ENOMEM) {
4149 DBG_PRINT(INFO_DBG, "Out of memory in %s",
4151 clear_bit(0, (&sp->tasklet_status));
4154 clear_bit(0, (&sp->tasklet_status));
4155 } else if (level == LOW)
4156 tasklet_schedule(&sp->task);
4158 } else if (fill_rx_buffers(sp, rng_n) == -ENOMEM) {
4159 DBG_PRINT(INFO_DBG, "%s:Out of memory", sp->dev->name);
4160 DBG_PRINT(INFO_DBG, " in Rx Intr!!\n");
4165 static irqreturn_t s2io_msix_ring_handle(int irq, void *dev_id)
4167 struct ring_info *ring = (struct ring_info *)dev_id;
4168 struct s2io_nic *sp = ring->nic;
4170 if (!is_s2io_card_up(sp))
4173 rx_intr_handler(ring);
4174 s2io_chk_rx_buffers(sp, ring->ring_no);
4179 static irqreturn_t s2io_msix_fifo_handle(int irq, void *dev_id)
4181 struct fifo_info *fifo = (struct fifo_info *)dev_id;
4182 struct s2io_nic *sp = fifo->nic;
4184 if (!is_s2io_card_up(sp))
4187 tx_intr_handler(fifo);
4190 static void s2io_txpic_intr_handle(struct s2io_nic *sp)
4192 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4195 val64 = readq(&bar0->pic_int_status);
4196 if (val64 & PIC_INT_GPIO) {
4197 val64 = readq(&bar0->gpio_int_reg);
4198 if ((val64 & GPIO_INT_REG_LINK_DOWN) &&
4199 (val64 & GPIO_INT_REG_LINK_UP)) {
4201 * This is unstable state so clear both up/down
4202 * interrupt and adapter to re-evaluate the link state.
4204 val64 |= GPIO_INT_REG_LINK_DOWN;
4205 val64 |= GPIO_INT_REG_LINK_UP;
4206 writeq(val64, &bar0->gpio_int_reg);
4207 val64 = readq(&bar0->gpio_int_mask);
4208 val64 &= ~(GPIO_INT_MASK_LINK_UP |
4209 GPIO_INT_MASK_LINK_DOWN);
4210 writeq(val64, &bar0->gpio_int_mask);
4212 else if (val64 & GPIO_INT_REG_LINK_UP) {
4213 val64 = readq(&bar0->adapter_status);
4214 /* Enable Adapter */
4215 val64 = readq(&bar0->adapter_control);
4216 val64 |= ADAPTER_CNTL_EN;
4217 writeq(val64, &bar0->adapter_control);
4218 val64 |= ADAPTER_LED_ON;
4219 writeq(val64, &bar0->adapter_control);
4220 if (!sp->device_enabled_once)
4221 sp->device_enabled_once = 1;
4223 s2io_link(sp, LINK_UP);
4225 * unmask link down interrupt and mask link-up
4228 val64 = readq(&bar0->gpio_int_mask);
4229 val64 &= ~GPIO_INT_MASK_LINK_DOWN;
4230 val64 |= GPIO_INT_MASK_LINK_UP;
4231 writeq(val64, &bar0->gpio_int_mask);
4233 }else if (val64 & GPIO_INT_REG_LINK_DOWN) {
4234 val64 = readq(&bar0->adapter_status);
4235 s2io_link(sp, LINK_DOWN);
4236 /* Link is down so unmaks link up interrupt */
4237 val64 = readq(&bar0->gpio_int_mask);
4238 val64 &= ~GPIO_INT_MASK_LINK_UP;
4239 val64 |= GPIO_INT_MASK_LINK_DOWN;
4240 writeq(val64, &bar0->gpio_int_mask);
4243 val64 = readq(&bar0->adapter_control);
4244 val64 = val64 &(~ADAPTER_LED_ON);
4245 writeq(val64, &bar0->adapter_control);
4248 val64 = readq(&bar0->gpio_int_mask);
4252 * do_s2io_chk_alarm_bit - Check for alarm and incrment the counter
4253 * @value: alarm bits
4254 * @addr: address value
4255 * @cnt: counter variable
4256 * Description: Check for alarm and increment the counter
4258 * 1 - if alarm bit set
4259 * 0 - if alarm bit is not set
4261 static int do_s2io_chk_alarm_bit(u64 value, void __iomem * addr,
4262 unsigned long long *cnt)
4265 val64 = readq(addr);
4266 if ( val64 & value ) {
4267 writeq(val64, addr);
4276 * s2io_handle_errors - Xframe error indication handler
4277 * @nic: device private variable
4278 * Description: Handle alarms such as loss of link, single or
4279 * double ECC errors, critical and serious errors.
4283 static void s2io_handle_errors(void * dev_id)
4285 struct net_device *dev = (struct net_device *) dev_id;
4286 struct s2io_nic *sp = dev->priv;
4287 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4288 u64 temp64 = 0,val64=0;
4291 struct swStat *sw_stat = &sp->mac_control.stats_info->sw_stat;
4292 struct xpakStat *stats = &sp->mac_control.stats_info->xpak_stat;
4294 if (!is_s2io_card_up(sp))
4297 if (pci_channel_offline(sp->pdev))
4300 memset(&sw_stat->ring_full_cnt, 0,
4301 sizeof(sw_stat->ring_full_cnt));
4303 /* Handling the XPAK counters update */
4304 if(stats->xpak_timer_count < 72000) {
4305 /* waiting for an hour */
4306 stats->xpak_timer_count++;
4308 s2io_updt_xpak_counter(dev);
4309 /* reset the count to zero */
4310 stats->xpak_timer_count = 0;
4313 /* Handling link status change error Intr */
4314 if (s2io_link_fault_indication(sp) == MAC_RMAC_ERR_TIMER) {
4315 val64 = readq(&bar0->mac_rmac_err_reg);
4316 writeq(val64, &bar0->mac_rmac_err_reg);
4317 if (val64 & RMAC_LINK_STATE_CHANGE_INT)
4318 schedule_work(&sp->set_link_task);
4321 /* In case of a serious error, the device will be Reset. */
4322 if (do_s2io_chk_alarm_bit(SERR_SOURCE_ANY, &bar0->serr_source,
4323 &sw_stat->serious_err_cnt))
4326 /* Check for data parity error */
4327 if (do_s2io_chk_alarm_bit(GPIO_INT_REG_DP_ERR_INT, &bar0->gpio_int_reg,
4328 &sw_stat->parity_err_cnt))
4331 /* Check for ring full counter */
4332 if (sp->device_type == XFRAME_II_DEVICE) {
4333 val64 = readq(&bar0->ring_bump_counter1);
4334 for (i=0; i<4; i++) {
4335 temp64 = ( val64 & vBIT(0xFFFF,(i*16),16));
4336 temp64 >>= 64 - ((i+1)*16);
4337 sw_stat->ring_full_cnt[i] += temp64;
4340 val64 = readq(&bar0->ring_bump_counter2);
4341 for (i=0; i<4; i++) {
4342 temp64 = ( val64 & vBIT(0xFFFF,(i*16),16));
4343 temp64 >>= 64 - ((i+1)*16);
4344 sw_stat->ring_full_cnt[i+4] += temp64;
4348 val64 = readq(&bar0->txdma_int_status);
4349 /*check for pfc_err*/
4350 if (val64 & TXDMA_PFC_INT) {
4351 if (do_s2io_chk_alarm_bit(PFC_ECC_DB_ERR | PFC_SM_ERR_ALARM|
4352 PFC_MISC_0_ERR | PFC_MISC_1_ERR|
4353 PFC_PCIX_ERR, &bar0->pfc_err_reg,
4354 &sw_stat->pfc_err_cnt))
4356 do_s2io_chk_alarm_bit(PFC_ECC_SG_ERR, &bar0->pfc_err_reg,
4357 &sw_stat->pfc_err_cnt);
4360 /*check for tda_err*/
4361 if (val64 & TXDMA_TDA_INT) {
4362 if(do_s2io_chk_alarm_bit(TDA_Fn_ECC_DB_ERR | TDA_SM0_ERR_ALARM |
4363 TDA_SM1_ERR_ALARM, &bar0->tda_err_reg,
4364 &sw_stat->tda_err_cnt))
4366 do_s2io_chk_alarm_bit(TDA_Fn_ECC_SG_ERR | TDA_PCIX_ERR,
4367 &bar0->tda_err_reg, &sw_stat->tda_err_cnt);
4369 /*check for pcc_err*/
4370 if (val64 & TXDMA_PCC_INT) {
4371 if (do_s2io_chk_alarm_bit(PCC_SM_ERR_ALARM | PCC_WR_ERR_ALARM
4372 | PCC_N_SERR | PCC_6_COF_OV_ERR
4373 | PCC_7_COF_OV_ERR | PCC_6_LSO_OV_ERR
4374 | PCC_7_LSO_OV_ERR | PCC_FB_ECC_DB_ERR
4375 | PCC_TXB_ECC_DB_ERR, &bar0->pcc_err_reg,
4376 &sw_stat->pcc_err_cnt))
4378 do_s2io_chk_alarm_bit(PCC_FB_ECC_SG_ERR | PCC_TXB_ECC_SG_ERR,
4379 &bar0->pcc_err_reg, &sw_stat->pcc_err_cnt);
4382 /*check for tti_err*/
4383 if (val64 & TXDMA_TTI_INT) {
4384 if (do_s2io_chk_alarm_bit(TTI_SM_ERR_ALARM, &bar0->tti_err_reg,
4385 &sw_stat->tti_err_cnt))
4387 do_s2io_chk_alarm_bit(TTI_ECC_SG_ERR | TTI_ECC_DB_ERR,
4388 &bar0->tti_err_reg, &sw_stat->tti_err_cnt);
4391 /*check for lso_err*/
4392 if (val64 & TXDMA_LSO_INT) {
4393 if (do_s2io_chk_alarm_bit(LSO6_ABORT | LSO7_ABORT
4394 | LSO6_SM_ERR_ALARM | LSO7_SM_ERR_ALARM,
4395 &bar0->lso_err_reg, &sw_stat->lso_err_cnt))
4397 do_s2io_chk_alarm_bit(LSO6_SEND_OFLOW | LSO7_SEND_OFLOW,
4398 &bar0->lso_err_reg, &sw_stat->lso_err_cnt);
4401 /*check for tpa_err*/
4402 if (val64 & TXDMA_TPA_INT) {
4403 if (do_s2io_chk_alarm_bit(TPA_SM_ERR_ALARM, &bar0->tpa_err_reg,
4404 &sw_stat->tpa_err_cnt))
4406 do_s2io_chk_alarm_bit(TPA_TX_FRM_DROP, &bar0->tpa_err_reg,
4407 &sw_stat->tpa_err_cnt);
4410 /*check for sm_err*/
4411 if (val64 & TXDMA_SM_INT) {
4412 if (do_s2io_chk_alarm_bit(SM_SM_ERR_ALARM, &bar0->sm_err_reg,
4413 &sw_stat->sm_err_cnt))
4417 val64 = readq(&bar0->mac_int_status);
4418 if (val64 & MAC_INT_STATUS_TMAC_INT) {
4419 if (do_s2io_chk_alarm_bit(TMAC_TX_BUF_OVRN | TMAC_TX_SM_ERR,
4420 &bar0->mac_tmac_err_reg,
4421 &sw_stat->mac_tmac_err_cnt))
4423 do_s2io_chk_alarm_bit(TMAC_ECC_SG_ERR | TMAC_ECC_DB_ERR
4424 | TMAC_DESC_ECC_SG_ERR | TMAC_DESC_ECC_DB_ERR,
4425 &bar0->mac_tmac_err_reg,
4426 &sw_stat->mac_tmac_err_cnt);
4429 val64 = readq(&bar0->xgxs_int_status);
4430 if (val64 & XGXS_INT_STATUS_TXGXS) {
4431 if (do_s2io_chk_alarm_bit(TXGXS_ESTORE_UFLOW | TXGXS_TX_SM_ERR,
4432 &bar0->xgxs_txgxs_err_reg,
4433 &sw_stat->xgxs_txgxs_err_cnt))
4435 do_s2io_chk_alarm_bit(TXGXS_ECC_SG_ERR | TXGXS_ECC_DB_ERR,
4436 &bar0->xgxs_txgxs_err_reg,
4437 &sw_stat->xgxs_txgxs_err_cnt);
4440 val64 = readq(&bar0->rxdma_int_status);
4441 if (val64 & RXDMA_INT_RC_INT_M) {
4442 if (do_s2io_chk_alarm_bit(RC_PRCn_ECC_DB_ERR | RC_FTC_ECC_DB_ERR
4443 | RC_PRCn_SM_ERR_ALARM |RC_FTC_SM_ERR_ALARM,
4444 &bar0->rc_err_reg, &sw_stat->rc_err_cnt))
4446 do_s2io_chk_alarm_bit(RC_PRCn_ECC_SG_ERR | RC_FTC_ECC_SG_ERR
4447 | RC_RDA_FAIL_WR_Rn, &bar0->rc_err_reg,
4448 &sw_stat->rc_err_cnt);
4449 if (do_s2io_chk_alarm_bit(PRC_PCI_AB_RD_Rn | PRC_PCI_AB_WR_Rn
4450 | PRC_PCI_AB_F_WR_Rn, &bar0->prc_pcix_err_reg,
4451 &sw_stat->prc_pcix_err_cnt))
4453 do_s2io_chk_alarm_bit(PRC_PCI_DP_RD_Rn | PRC_PCI_DP_WR_Rn
4454 | PRC_PCI_DP_F_WR_Rn, &bar0->prc_pcix_err_reg,
4455 &sw_stat->prc_pcix_err_cnt);
4458 if (val64 & RXDMA_INT_RPA_INT_M) {
4459 if (do_s2io_chk_alarm_bit(RPA_SM_ERR_ALARM | RPA_CREDIT_ERR,
4460 &bar0->rpa_err_reg, &sw_stat->rpa_err_cnt))
4462 do_s2io_chk_alarm_bit(RPA_ECC_SG_ERR | RPA_ECC_DB_ERR,
4463 &bar0->rpa_err_reg, &sw_stat->rpa_err_cnt);
4466 if (val64 & RXDMA_INT_RDA_INT_M) {
4467 if (do_s2io_chk_alarm_bit(RDA_RXDn_ECC_DB_ERR
4468 | RDA_FRM_ECC_DB_N_AERR | RDA_SM1_ERR_ALARM
4469 | RDA_SM0_ERR_ALARM | RDA_RXD_ECC_DB_SERR,
4470 &bar0->rda_err_reg, &sw_stat->rda_err_cnt))
4472 do_s2io_chk_alarm_bit(RDA_RXDn_ECC_SG_ERR | RDA_FRM_ECC_SG_ERR
4473 | RDA_MISC_ERR | RDA_PCIX_ERR,
4474 &bar0->rda_err_reg, &sw_stat->rda_err_cnt);
4477 if (val64 & RXDMA_INT_RTI_INT_M) {
4478 if (do_s2io_chk_alarm_bit(RTI_SM_ERR_ALARM, &bar0->rti_err_reg,
4479 &sw_stat->rti_err_cnt))
4481 do_s2io_chk_alarm_bit(RTI_ECC_SG_ERR | RTI_ECC_DB_ERR,
4482 &bar0->rti_err_reg, &sw_stat->rti_err_cnt);
4485 val64 = readq(&bar0->mac_int_status);
4486 if (val64 & MAC_INT_STATUS_RMAC_INT) {
4487 if (do_s2io_chk_alarm_bit(RMAC_RX_BUFF_OVRN | RMAC_RX_SM_ERR,
4488 &bar0->mac_rmac_err_reg,
4489 &sw_stat->mac_rmac_err_cnt))
4491 do_s2io_chk_alarm_bit(RMAC_UNUSED_INT|RMAC_SINGLE_ECC_ERR|
4492 RMAC_DOUBLE_ECC_ERR, &bar0->mac_rmac_err_reg,
4493 &sw_stat->mac_rmac_err_cnt);
4496 val64 = readq(&bar0->xgxs_int_status);
4497 if (val64 & XGXS_INT_STATUS_RXGXS) {
4498 if (do_s2io_chk_alarm_bit(RXGXS_ESTORE_OFLOW | RXGXS_RX_SM_ERR,
4499 &bar0->xgxs_rxgxs_err_reg,
4500 &sw_stat->xgxs_rxgxs_err_cnt))
4504 val64 = readq(&bar0->mc_int_status);
4505 if(val64 & MC_INT_STATUS_MC_INT) {
4506 if (do_s2io_chk_alarm_bit(MC_ERR_REG_SM_ERR, &bar0->mc_err_reg,
4507 &sw_stat->mc_err_cnt))
4510 /* Handling Ecc errors */
4511 if (val64 & (MC_ERR_REG_ECC_ALL_SNG | MC_ERR_REG_ECC_ALL_DBL)) {
4512 writeq(val64, &bar0->mc_err_reg);
4513 if (val64 & MC_ERR_REG_ECC_ALL_DBL) {
4514 sw_stat->double_ecc_errs++;
4515 if (sp->device_type != XFRAME_II_DEVICE) {
4517 * Reset XframeI only if critical error
4520 (MC_ERR_REG_MIRI_ECC_DB_ERR_0 |
4521 MC_ERR_REG_MIRI_ECC_DB_ERR_1))
4525 sw_stat->single_ecc_errs++;
4531 netif_stop_queue(dev);
4532 schedule_work(&sp->rst_timer_task);
4533 sw_stat->soft_reset_cnt++;
4538 * s2io_isr - ISR handler of the device .
4539 * @irq: the irq of the device.
4540 * @dev_id: a void pointer to the dev structure of the NIC.
4541 * Description: This function is the ISR handler of the device. It
4542 * identifies the reason for the interrupt and calls the relevant
4543 * service routines. As a contongency measure, this ISR allocates the
4544 * recv buffers, if their numbers are below the panic value which is
4545 * presently set to 25% of the original number of rcv buffers allocated.
4547 * IRQ_HANDLED: will be returned if IRQ was handled by this routine
4548 * IRQ_NONE: will be returned if interrupt is not from our device
4550 static irqreturn_t s2io_isr(int irq, void *dev_id)
4552 struct net_device *dev = (struct net_device *) dev_id;
4553 struct s2io_nic *sp = dev->priv;
4554 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4557 struct mac_info *mac_control;
4558 struct config_param *config;
4560 /* Pretend we handled any irq's from a disconnected card */
4561 if (pci_channel_offline(sp->pdev))
4564 if (!is_s2io_card_up(sp))
4567 mac_control = &sp->mac_control;
4568 config = &sp->config;
4571 * Identify the cause for interrupt and call the appropriate
4572 * interrupt handler. Causes for the interrupt could be;
4577 reason = readq(&bar0->general_int_status);
4579 if (unlikely(reason == S2IO_MINUS_ONE) ) {
4580 /* Nothing much can be done. Get out */
4584 if (reason & (GEN_INTR_RXTRAFFIC |
4585 GEN_INTR_TXTRAFFIC | GEN_INTR_TXPIC))
4587 writeq(S2IO_MINUS_ONE, &bar0->general_int_mask);
4590 if (reason & GEN_INTR_RXTRAFFIC) {
4591 if (likely(netif_rx_schedule_prep(dev,
4593 __netif_rx_schedule(dev, &sp->napi);
4594 writeq(S2IO_MINUS_ONE,
4595 &bar0->rx_traffic_mask);
4597 writeq(S2IO_MINUS_ONE,
4598 &bar0->rx_traffic_int);
4602 * rx_traffic_int reg is an R1 register, writing all 1's
4603 * will ensure that the actual interrupt causing bit
4604 * get's cleared and hence a read can be avoided.
4606 if (reason & GEN_INTR_RXTRAFFIC)
4607 writeq(S2IO_MINUS_ONE, &bar0->rx_traffic_int);
4609 for (i = 0; i < config->rx_ring_num; i++)
4610 rx_intr_handler(&mac_control->rings[i]);
4614 * tx_traffic_int reg is an R1 register, writing all 1's
4615 * will ensure that the actual interrupt causing bit get's
4616 * cleared and hence a read can be avoided.
4618 if (reason & GEN_INTR_TXTRAFFIC)
4619 writeq(S2IO_MINUS_ONE, &bar0->tx_traffic_int);
4621 for (i = 0; i < config->tx_fifo_num; i++)
4622 tx_intr_handler(&mac_control->fifos[i]);
4624 if (reason & GEN_INTR_TXPIC)
4625 s2io_txpic_intr_handle(sp);
4628 * Reallocate the buffers from the interrupt handler itself.
4630 if (!config->napi) {
4631 for (i = 0; i < config->rx_ring_num; i++)
4632 s2io_chk_rx_buffers(sp, i);
4634 writeq(sp->general_int_mask, &bar0->general_int_mask);
4635 readl(&bar0->general_int_status);
4641 /* The interrupt was not raised by us */
4651 static void s2io_updt_stats(struct s2io_nic *sp)
4653 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4657 if (is_s2io_card_up(sp)) {
4658 /* Apprx 30us on a 133 MHz bus */
4659 val64 = SET_UPDT_CLICKS(10) |
4660 STAT_CFG_ONE_SHOT_EN | STAT_CFG_STAT_EN;
4661 writeq(val64, &bar0->stat_cfg);
4664 val64 = readq(&bar0->stat_cfg);
4665 if (!(val64 & s2BIT(0)))
4669 break; /* Updt failed */
4675 * s2io_get_stats - Updates the device statistics structure.
4676 * @dev : pointer to the device structure.
4678 * This function updates the device statistics structure in the s2io_nic
4679 * structure and returns a pointer to the same.
4681 * pointer to the updated net_device_stats structure.
4684 static struct net_device_stats *s2io_get_stats(struct net_device *dev)
4686 struct s2io_nic *sp = dev->priv;
4687 struct mac_info *mac_control;
4688 struct config_param *config;
4691 mac_control = &sp->mac_control;
4692 config = &sp->config;
4694 /* Configure Stats for immediate updt */
4695 s2io_updt_stats(sp);
4697 sp->stats.tx_packets =
4698 le32_to_cpu(mac_control->stats_info->tmac_frms);
4699 sp->stats.tx_errors =
4700 le32_to_cpu(mac_control->stats_info->tmac_any_err_frms);
4701 sp->stats.rx_errors =
4702 le64_to_cpu(mac_control->stats_info->rmac_drop_frms);
4703 sp->stats.multicast =
4704 le32_to_cpu(mac_control->stats_info->rmac_vld_mcst_frms);
4705 sp->stats.rx_length_errors =
4706 le64_to_cpu(mac_control->stats_info->rmac_long_frms);
4708 return (&sp->stats);
4712 * s2io_set_multicast - entry point for multicast address enable/disable.
4713 * @dev : pointer to the device structure
4715 * This function is a driver entry point which gets called by the kernel
4716 * whenever multicast addresses must be enabled/disabled. This also gets
4717 * called to set/reset promiscuous mode. Depending on the deivce flag, we
4718 * determine, if multicast address must be enabled or if promiscuous mode
4719 * is to be disabled etc.
4724 static void s2io_set_multicast(struct net_device *dev)
4727 struct dev_mc_list *mclist;
4728 struct s2io_nic *sp = dev->priv;
4729 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4730 u64 val64 = 0, multi_mac = 0x010203040506ULL, mask =
4732 u64 dis_addr = 0xffffffffffffULL, mac_addr = 0;
4735 if ((dev->flags & IFF_ALLMULTI) && (!sp->m_cast_flg)) {
4736 /* Enable all Multicast addresses */
4737 writeq(RMAC_ADDR_DATA0_MEM_ADDR(multi_mac),
4738 &bar0->rmac_addr_data0_mem);
4739 writeq(RMAC_ADDR_DATA1_MEM_MASK(mask),
4740 &bar0->rmac_addr_data1_mem);
4741 val64 = RMAC_ADDR_CMD_MEM_WE |
4742 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4743 RMAC_ADDR_CMD_MEM_OFFSET(MAC_MC_ALL_MC_ADDR_OFFSET);
4744 writeq(val64, &bar0->rmac_addr_cmd_mem);
4745 /* Wait till command completes */
4746 wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
4747 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
4751 sp->all_multi_pos = MAC_MC_ALL_MC_ADDR_OFFSET;
4752 } else if ((dev->flags & IFF_ALLMULTI) && (sp->m_cast_flg)) {
4753 /* Disable all Multicast addresses */
4754 writeq(RMAC_ADDR_DATA0_MEM_ADDR(dis_addr),
4755 &bar0->rmac_addr_data0_mem);
4756 writeq(RMAC_ADDR_DATA1_MEM_MASK(0x0),
4757 &bar0->rmac_addr_data1_mem);
4758 val64 = RMAC_ADDR_CMD_MEM_WE |
4759 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4760 RMAC_ADDR_CMD_MEM_OFFSET(sp->all_multi_pos);
4761 writeq(val64, &bar0->rmac_addr_cmd_mem);
4762 /* Wait till command completes */
4763 wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
4764 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
4768 sp->all_multi_pos = 0;
4771 if ((dev->flags & IFF_PROMISC) && (!sp->promisc_flg)) {
4772 /* Put the NIC into promiscuous mode */
4773 add = &bar0->mac_cfg;
4774 val64 = readq(&bar0->mac_cfg);
4775 val64 |= MAC_CFG_RMAC_PROM_ENABLE;
4777 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4778 writel((u32) val64, add);
4779 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4780 writel((u32) (val64 >> 32), (add + 4));
4782 if (vlan_tag_strip != 1) {
4783 val64 = readq(&bar0->rx_pa_cfg);
4784 val64 &= ~RX_PA_CFG_STRIP_VLAN_TAG;
4785 writeq(val64, &bar0->rx_pa_cfg);
4786 vlan_strip_flag = 0;
4789 val64 = readq(&bar0->mac_cfg);
4790 sp->promisc_flg = 1;
4791 DBG_PRINT(INFO_DBG, "%s: entered promiscuous mode\n",
4793 } else if (!(dev->flags & IFF_PROMISC) && (sp->promisc_flg)) {
4794 /* Remove the NIC from promiscuous mode */
4795 add = &bar0->mac_cfg;
4796 val64 = readq(&bar0->mac_cfg);
4797 val64 &= ~MAC_CFG_RMAC_PROM_ENABLE;
4799 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4800 writel((u32) val64, add);
4801 writeq(RMAC_CFG_KEY(0x4C0D), &bar0->rmac_cfg_key);
4802 writel((u32) (val64 >> 32), (add + 4));
4804 if (vlan_tag_strip != 0) {
4805 val64 = readq(&bar0->rx_pa_cfg);
4806 val64 |= RX_PA_CFG_STRIP_VLAN_TAG;
4807 writeq(val64, &bar0->rx_pa_cfg);
4808 vlan_strip_flag = 1;
4811 val64 = readq(&bar0->mac_cfg);
4812 sp->promisc_flg = 0;
4813 DBG_PRINT(INFO_DBG, "%s: left promiscuous mode\n",
4817 /* Update individual M_CAST address list */
4818 if ((!sp->m_cast_flg) && dev->mc_count) {
4820 (MAX_ADDRS_SUPPORTED - MAC_MC_ADDR_START_OFFSET - 1)) {
4821 DBG_PRINT(ERR_DBG, "%s: No more Rx filters ",
4823 DBG_PRINT(ERR_DBG, "can be added, please enable ");
4824 DBG_PRINT(ERR_DBG, "ALL_MULTI instead\n");
4828 prev_cnt = sp->mc_addr_count;
4829 sp->mc_addr_count = dev->mc_count;
4831 /* Clear out the previous list of Mc in the H/W. */
4832 for (i = 0; i < prev_cnt; i++) {
4833 writeq(RMAC_ADDR_DATA0_MEM_ADDR(dis_addr),
4834 &bar0->rmac_addr_data0_mem);
4835 writeq(RMAC_ADDR_DATA1_MEM_MASK(0ULL),
4836 &bar0->rmac_addr_data1_mem);
4837 val64 = RMAC_ADDR_CMD_MEM_WE |
4838 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4839 RMAC_ADDR_CMD_MEM_OFFSET
4840 (MAC_MC_ADDR_START_OFFSET + i);
4841 writeq(val64, &bar0->rmac_addr_cmd_mem);
4843 /* Wait for command completes */
4844 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
4845 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
4847 DBG_PRINT(ERR_DBG, "%s: Adding ",
4849 DBG_PRINT(ERR_DBG, "Multicasts failed\n");
4854 /* Create the new Rx filter list and update the same in H/W. */
4855 for (i = 0, mclist = dev->mc_list; i < dev->mc_count;
4856 i++, mclist = mclist->next) {
4857 memcpy(sp->usr_addrs[i].addr, mclist->dmi_addr,
4860 for (j = 0; j < ETH_ALEN; j++) {
4861 mac_addr |= mclist->dmi_addr[j];
4865 writeq(RMAC_ADDR_DATA0_MEM_ADDR(mac_addr),
4866 &bar0->rmac_addr_data0_mem);
4867 writeq(RMAC_ADDR_DATA1_MEM_MASK(0ULL),
4868 &bar0->rmac_addr_data1_mem);
4869 val64 = RMAC_ADDR_CMD_MEM_WE |
4870 RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4871 RMAC_ADDR_CMD_MEM_OFFSET
4872 (i + MAC_MC_ADDR_START_OFFSET);
4873 writeq(val64, &bar0->rmac_addr_cmd_mem);
4875 /* Wait for command completes */
4876 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
4877 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
4879 DBG_PRINT(ERR_DBG, "%s: Adding ",
4881 DBG_PRINT(ERR_DBG, "Multicasts failed\n");
4888 /* add unicast MAC address to CAM */
4889 static int do_s2io_add_unicast(struct s2io_nic *sp, u64 addr, int off)
4892 struct XENA_dev_config __iomem *bar0 = sp->bar0;
4894 writeq(RMAC_ADDR_DATA0_MEM_ADDR(addr),
4895 &bar0->rmac_addr_data0_mem);
4898 RMAC_ADDR_CMD_MEM_WE | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
4899 RMAC_ADDR_CMD_MEM_OFFSET(off);
4900 writeq(val64, &bar0->rmac_addr_cmd_mem);
4902 /* Wait till command completes */
4903 if (wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
4904 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING,
4906 DBG_PRINT(INFO_DBG, "add_mac_addr failed\n");
4913 * s2io_set_mac_addr driver entry point
4915 static int s2io_set_mac_addr(struct net_device *dev, void *p)
4917 struct sockaddr *addr = p;
4919 if (!is_valid_ether_addr(addr->sa_data))
4922 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
4924 /* store the MAC address in CAM */
4925 return (do_s2io_prog_unicast(dev, dev->dev_addr));
4929 * do_s2io_prog_unicast - Programs the Xframe mac address
4930 * @dev : pointer to the device structure.
4931 * @addr: a uchar pointer to the new mac address which is to be set.
4932 * Description : This procedure will program the Xframe to receive
4933 * frames with new Mac Address
4934 * Return value: SUCCESS on success and an appropriate (-)ve integer
4935 * as defined in errno.h file on failure.
4937 static int do_s2io_prog_unicast(struct net_device *dev, u8 *addr)
4939 struct s2io_nic *sp = dev->priv;
4940 register u64 mac_addr = 0, perm_addr = 0;
4944 * Set the new MAC address as the new unicast filter and reflect this
4945 * change on the device address registered with the OS. It will be
4948 for (i = 0; i < ETH_ALEN; i++) {
4950 mac_addr |= addr[i];
4952 perm_addr |= sp->def_mac_addr[0].mac_addr[i];
4955 /* check if the dev_addr is different than perm_addr */
4956 if (mac_addr == perm_addr)
4959 /* Update the internal structure with this new mac address */
4960 do_s2io_copy_mac_addr(sp, 0, mac_addr);
4961 return (do_s2io_add_unicast(sp, mac_addr, 0));
4965 * s2io_ethtool_sset - Sets different link parameters.
4966 * @sp : private member of the device structure, which is a pointer to the * s2io_nic structure.
4967 * @info: pointer to the structure with parameters given by ethtool to set
4970 * The function sets different link parameters provided by the user onto
4976 static int s2io_ethtool_sset(struct net_device *dev,
4977 struct ethtool_cmd *info)
4979 struct s2io_nic *sp = dev->priv;
4980 if ((info->autoneg == AUTONEG_ENABLE) ||
4981 (info->speed != SPEED_10000) || (info->duplex != DUPLEX_FULL))
4984 s2io_close(sp->dev);
4992 * s2io_ethtol_gset - Return link specific information.
4993 * @sp : private member of the device structure, pointer to the
4994 * s2io_nic structure.
4995 * @info : pointer to the structure with parameters given by ethtool
4996 * to return link information.
4998 * Returns link specific information like speed, duplex etc.. to ethtool.
5000 * return 0 on success.
5003 static int s2io_ethtool_gset(struct net_device *dev, struct ethtool_cmd *info)
5005 struct s2io_nic *sp = dev->priv;
5006 info->supported = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
5007 info->advertising = (SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
5008 info->port = PORT_FIBRE;
5010 /* info->transceiver */
5011 info->transceiver = XCVR_EXTERNAL;
5013 if (netif_carrier_ok(sp->dev)) {
5014 info->speed = 10000;
5015 info->duplex = DUPLEX_FULL;
5021 info->autoneg = AUTONEG_DISABLE;
5026 * s2io_ethtool_gdrvinfo - Returns driver specific information.
5027 * @sp : private member of the device structure, which is a pointer to the
5028 * s2io_nic structure.
5029 * @info : pointer to the structure with parameters given by ethtool to
5030 * return driver information.
5032 * Returns driver specefic information like name, version etc.. to ethtool.
5037 static void s2io_ethtool_gdrvinfo(struct net_device *dev,
5038 struct ethtool_drvinfo *info)
5040 struct s2io_nic *sp = dev->priv;
5042 strncpy(info->driver, s2io_driver_name, sizeof(info->driver));
5043 strncpy(info->version, s2io_driver_version, sizeof(info->version));
5044 strncpy(info->fw_version, "", sizeof(info->fw_version));
5045 strncpy(info->bus_info, pci_name(sp->pdev), sizeof(info->bus_info));
5046 info->regdump_len = XENA_REG_SPACE;
5047 info->eedump_len = XENA_EEPROM_SPACE;
5051 * s2io_ethtool_gregs - dumps the entire space of Xfame into the buffer.
5052 * @sp: private member of the device structure, which is a pointer to the
5053 * s2io_nic structure.
5054 * @regs : pointer to the structure with parameters given by ethtool for
5055 * dumping the registers.
5056 * @reg_space: The input argumnet into which all the registers are dumped.
5058 * Dumps the entire register space of xFrame NIC into the user given
5064 static void s2io_ethtool_gregs(struct net_device *dev,
5065 struct ethtool_regs *regs, void *space)
5069 u8 *reg_space = (u8 *) space;
5070 struct s2io_nic *sp = dev->priv;
5072 regs->len = XENA_REG_SPACE;
5073 regs->version = sp->pdev->subsystem_device;
5075 for (i = 0; i < regs->len; i += 8) {
5076 reg = readq(sp->bar0 + i);
5077 memcpy((reg_space + i), ®, 8);
5082 * s2io_phy_id - timer function that alternates adapter LED.
5083 * @data : address of the private member of the device structure, which
5084 * is a pointer to the s2io_nic structure, provided as an u32.
5085 * Description: This is actually the timer function that alternates the
5086 * adapter LED bit of the adapter control bit to set/reset every time on
5087 * invocation. The timer is set for 1/2 a second, hence tha NIC blinks
5088 * once every second.
5090 static void s2io_phy_id(unsigned long data)
5092 struct s2io_nic *sp = (struct s2io_nic *) data;
5093 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5097 subid = sp->pdev->subsystem_device;
5098 if ((sp->device_type == XFRAME_II_DEVICE) ||
5099 ((subid & 0xFF) >= 0x07)) {
5100 val64 = readq(&bar0->gpio_control);
5101 val64 ^= GPIO_CTRL_GPIO_0;
5102 writeq(val64, &bar0->gpio_control);
5104 val64 = readq(&bar0->adapter_control);
5105 val64 ^= ADAPTER_LED_ON;
5106 writeq(val64, &bar0->adapter_control);
5109 mod_timer(&sp->id_timer, jiffies + HZ / 2);
5113 * s2io_ethtool_idnic - To physically identify the nic on the system.
5114 * @sp : private member of the device structure, which is a pointer to the
5115 * s2io_nic structure.
5116 * @id : pointer to the structure with identification parameters given by
5118 * Description: Used to physically identify the NIC on the system.
5119 * The Link LED will blink for a time specified by the user for
5121 * NOTE: The Link has to be Up to be able to blink the LED. Hence
5122 * identification is possible only if it's link is up.
5124 * int , returns 0 on success
5127 static int s2io_ethtool_idnic(struct net_device *dev, u32 data)
5129 u64 val64 = 0, last_gpio_ctrl_val;
5130 struct s2io_nic *sp = dev->priv;
5131 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5134 subid = sp->pdev->subsystem_device;
5135 last_gpio_ctrl_val = readq(&bar0->gpio_control);
5136 if ((sp->device_type == XFRAME_I_DEVICE) &&
5137 ((subid & 0xFF) < 0x07)) {
5138 val64 = readq(&bar0->adapter_control);
5139 if (!(val64 & ADAPTER_CNTL_EN)) {
5141 "Adapter Link down, cannot blink LED\n");
5145 if (sp->id_timer.function == NULL) {
5146 init_timer(&sp->id_timer);
5147 sp->id_timer.function = s2io_phy_id;
5148 sp->id_timer.data = (unsigned long) sp;
5150 mod_timer(&sp->id_timer, jiffies);
5152 msleep_interruptible(data * HZ);
5154 msleep_interruptible(MAX_FLICKER_TIME);
5155 del_timer_sync(&sp->id_timer);
5157 if (CARDS_WITH_FAULTY_LINK_INDICATORS(sp->device_type, subid)) {
5158 writeq(last_gpio_ctrl_val, &bar0->gpio_control);
5159 last_gpio_ctrl_val = readq(&bar0->gpio_control);
5165 static void s2io_ethtool_gringparam(struct net_device *dev,
5166 struct ethtool_ringparam *ering)
5168 struct s2io_nic *sp = dev->priv;
5169 int i,tx_desc_count=0,rx_desc_count=0;
5171 if (sp->rxd_mode == RXD_MODE_1)
5172 ering->rx_max_pending = MAX_RX_DESC_1;
5173 else if (sp->rxd_mode == RXD_MODE_3B)
5174 ering->rx_max_pending = MAX_RX_DESC_2;
5176 ering->tx_max_pending = MAX_TX_DESC;
5177 for (i = 0 ; i < sp->config.tx_fifo_num ; i++)
5178 tx_desc_count += sp->config.tx_cfg[i].fifo_len;
5180 DBG_PRINT(INFO_DBG,"\nmax txds : %d\n",sp->config.max_txds);
5181 ering->tx_pending = tx_desc_count;
5183 for (i = 0 ; i < sp->config.rx_ring_num ; i++)
5184 rx_desc_count += sp->config.rx_cfg[i].num_rxd;
5186 ering->rx_pending = rx_desc_count;
5188 ering->rx_mini_max_pending = 0;
5189 ering->rx_mini_pending = 0;
5190 if(sp->rxd_mode == RXD_MODE_1)
5191 ering->rx_jumbo_max_pending = MAX_RX_DESC_1;
5192 else if (sp->rxd_mode == RXD_MODE_3B)
5193 ering->rx_jumbo_max_pending = MAX_RX_DESC_2;
5194 ering->rx_jumbo_pending = rx_desc_count;
5198 * s2io_ethtool_getpause_data -Pause frame frame generation and reception.
5199 * @sp : private member of the device structure, which is a pointer to the
5200 * s2io_nic structure.
5201 * @ep : pointer to the structure with pause parameters given by ethtool.
5203 * Returns the Pause frame generation and reception capability of the NIC.
5207 static void s2io_ethtool_getpause_data(struct net_device *dev,
5208 struct ethtool_pauseparam *ep)
5211 struct s2io_nic *sp = dev->priv;
5212 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5214 val64 = readq(&bar0->rmac_pause_cfg);
5215 if (val64 & RMAC_PAUSE_GEN_ENABLE)
5216 ep->tx_pause = TRUE;
5217 if (val64 & RMAC_PAUSE_RX_ENABLE)
5218 ep->rx_pause = TRUE;
5219 ep->autoneg = FALSE;
5223 * s2io_ethtool_setpause_data - set/reset pause frame generation.
5224 * @sp : private member of the device structure, which is a pointer to the
5225 * s2io_nic structure.
5226 * @ep : pointer to the structure with pause parameters given by ethtool.
5228 * It can be used to set or reset Pause frame generation or reception
5229 * support of the NIC.
5231 * int, returns 0 on Success
5234 static int s2io_ethtool_setpause_data(struct net_device *dev,
5235 struct ethtool_pauseparam *ep)
5238 struct s2io_nic *sp = dev->priv;
5239 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5241 val64 = readq(&bar0->rmac_pause_cfg);
5243 val64 |= RMAC_PAUSE_GEN_ENABLE;
5245 val64 &= ~RMAC_PAUSE_GEN_ENABLE;
5247 val64 |= RMAC_PAUSE_RX_ENABLE;
5249 val64 &= ~RMAC_PAUSE_RX_ENABLE;
5250 writeq(val64, &bar0->rmac_pause_cfg);
5255 * read_eeprom - reads 4 bytes of data from user given offset.
5256 * @sp : private member of the device structure, which is a pointer to the
5257 * s2io_nic structure.
5258 * @off : offset at which the data must be written
5259 * @data : Its an output parameter where the data read at the given
5262 * Will read 4 bytes of data from the user given offset and return the
5264 * NOTE: Will allow to read only part of the EEPROM visible through the
5267 * -1 on failure and 0 on success.
5270 #define S2IO_DEV_ID 5
5271 static int read_eeprom(struct s2io_nic * sp, int off, u64 * data)
5276 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5278 if (sp->device_type == XFRAME_I_DEVICE) {
5279 val64 = I2C_CONTROL_DEV_ID(S2IO_DEV_ID) | I2C_CONTROL_ADDR(off) |
5280 I2C_CONTROL_BYTE_CNT(0x3) | I2C_CONTROL_READ |
5281 I2C_CONTROL_CNTL_START;
5282 SPECIAL_REG_WRITE(val64, &bar0->i2c_control, LF);
5284 while (exit_cnt < 5) {
5285 val64 = readq(&bar0->i2c_control);
5286 if (I2C_CONTROL_CNTL_END(val64)) {
5287 *data = I2C_CONTROL_GET_DATA(val64);
5296 if (sp->device_type == XFRAME_II_DEVICE) {
5297 val64 = SPI_CONTROL_KEY(0x9) | SPI_CONTROL_SEL1 |
5298 SPI_CONTROL_BYTECNT(0x3) |
5299 SPI_CONTROL_CMD(0x3) | SPI_CONTROL_ADDR(off);
5300 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5301 val64 |= SPI_CONTROL_REQ;
5302 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5303 while (exit_cnt < 5) {
5304 val64 = readq(&bar0->spi_control);
5305 if (val64 & SPI_CONTROL_NACK) {
5308 } else if (val64 & SPI_CONTROL_DONE) {
5309 *data = readq(&bar0->spi_data);
5322 * write_eeprom - actually writes the relevant part of the data value.
5323 * @sp : private member of the device structure, which is a pointer to the
5324 * s2io_nic structure.
5325 * @off : offset at which the data must be written
5326 * @data : The data that is to be written
5327 * @cnt : Number of bytes of the data that are actually to be written into
5328 * the Eeprom. (max of 3)
5330 * Actually writes the relevant part of the data value into the Eeprom
5331 * through the I2C bus.
5333 * 0 on success, -1 on failure.
5336 static int write_eeprom(struct s2io_nic * sp, int off, u64 data, int cnt)
5338 int exit_cnt = 0, ret = -1;
5340 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5342 if (sp->device_type == XFRAME_I_DEVICE) {
5343 val64 = I2C_CONTROL_DEV_ID(S2IO_DEV_ID) | I2C_CONTROL_ADDR(off) |
5344 I2C_CONTROL_BYTE_CNT(cnt) | I2C_CONTROL_SET_DATA((u32)data) |
5345 I2C_CONTROL_CNTL_START;
5346 SPECIAL_REG_WRITE(val64, &bar0->i2c_control, LF);
5348 while (exit_cnt < 5) {
5349 val64 = readq(&bar0->i2c_control);
5350 if (I2C_CONTROL_CNTL_END(val64)) {
5351 if (!(val64 & I2C_CONTROL_NACK))
5360 if (sp->device_type == XFRAME_II_DEVICE) {
5361 int write_cnt = (cnt == 8) ? 0 : cnt;
5362 writeq(SPI_DATA_WRITE(data,(cnt<<3)), &bar0->spi_data);
5364 val64 = SPI_CONTROL_KEY(0x9) | SPI_CONTROL_SEL1 |
5365 SPI_CONTROL_BYTECNT(write_cnt) |
5366 SPI_CONTROL_CMD(0x2) | SPI_CONTROL_ADDR(off);
5367 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5368 val64 |= SPI_CONTROL_REQ;
5369 SPECIAL_REG_WRITE(val64, &bar0->spi_control, LF);
5370 while (exit_cnt < 5) {
5371 val64 = readq(&bar0->spi_control);
5372 if (val64 & SPI_CONTROL_NACK) {
5375 } else if (val64 & SPI_CONTROL_DONE) {
5385 static void s2io_vpd_read(struct s2io_nic *nic)
5389 int i=0, cnt, fail = 0;
5390 int vpd_addr = 0x80;
5392 if (nic->device_type == XFRAME_II_DEVICE) {
5393 strcpy(nic->product_name, "Xframe II 10GbE network adapter");
5397 strcpy(nic->product_name, "Xframe I 10GbE network adapter");
5400 strcpy(nic->serial_num, "NOT AVAILABLE");
5402 vpd_data = kmalloc(256, GFP_KERNEL);
5404 nic->mac_control.stats_info->sw_stat.mem_alloc_fail_cnt++;
5407 nic->mac_control.stats_info->sw_stat.mem_allocated += 256;
5409 for (i = 0; i < 256; i +=4 ) {
5410 pci_write_config_byte(nic->pdev, (vpd_addr + 2), i);
5411 pci_read_config_byte(nic->pdev, (vpd_addr + 2), &data);
5412 pci_write_config_byte(nic->pdev, (vpd_addr + 3), 0);
5413 for (cnt = 0; cnt <5; cnt++) {
5415 pci_read_config_byte(nic->pdev, (vpd_addr + 3), &data);
5420 DBG_PRINT(ERR_DBG, "Read of VPD data failed\n");
5424 pci_read_config_dword(nic->pdev, (vpd_addr + 4),
5425 (u32 *)&vpd_data[i]);
5429 /* read serial number of adapter */
5430 for (cnt = 0; cnt < 256; cnt++) {
5431 if ((vpd_data[cnt] == 'S') &&
5432 (vpd_data[cnt+1] == 'N') &&
5433 (vpd_data[cnt+2] < VPD_STRING_LEN)) {
5434 memset(nic->serial_num, 0, VPD_STRING_LEN);
5435 memcpy(nic->serial_num, &vpd_data[cnt + 3],
5442 if ((!fail) && (vpd_data[1] < VPD_STRING_LEN)) {
5443 memset(nic->product_name, 0, vpd_data[1]);
5444 memcpy(nic->product_name, &vpd_data[3], vpd_data[1]);
5447 nic->mac_control.stats_info->sw_stat.mem_freed += 256;
5451 * s2io_ethtool_geeprom - reads the value stored in the Eeprom.
5452 * @sp : private member of the device structure, which is a pointer to the * s2io_nic structure.
5453 * @eeprom : pointer to the user level structure provided by ethtool,
5454 * containing all relevant information.
5455 * @data_buf : user defined value to be written into Eeprom.
5456 * Description: Reads the values stored in the Eeprom at given offset
5457 * for a given length. Stores these values int the input argument data
5458 * buffer 'data_buf' and returns these to the caller (ethtool.)
5463 static int s2io_ethtool_geeprom(struct net_device *dev,
5464 struct ethtool_eeprom *eeprom, u8 * data_buf)
5468 struct s2io_nic *sp = dev->priv;
5470 eeprom->magic = sp->pdev->vendor | (sp->pdev->device << 16);
5472 if ((eeprom->offset + eeprom->len) > (XENA_EEPROM_SPACE))
5473 eeprom->len = XENA_EEPROM_SPACE - eeprom->offset;
5475 for (i = 0; i < eeprom->len; i += 4) {
5476 if (read_eeprom(sp, (eeprom->offset + i), &data)) {
5477 DBG_PRINT(ERR_DBG, "Read of EEPROM failed\n");
5481 memcpy((data_buf + i), &valid, 4);
5487 * s2io_ethtool_seeprom - tries to write the user provided value in Eeprom
5488 * @sp : private member of the device structure, which is a pointer to the
5489 * s2io_nic structure.
5490 * @eeprom : pointer to the user level structure provided by ethtool,
5491 * containing all relevant information.
5492 * @data_buf ; user defined value to be written into Eeprom.
5494 * Tries to write the user provided value in the Eeprom, at the offset
5495 * given by the user.
5497 * 0 on success, -EFAULT on failure.
5500 static int s2io_ethtool_seeprom(struct net_device *dev,
5501 struct ethtool_eeprom *eeprom,
5504 int len = eeprom->len, cnt = 0;
5505 u64 valid = 0, data;
5506 struct s2io_nic *sp = dev->priv;
5508 if (eeprom->magic != (sp->pdev->vendor | (sp->pdev->device << 16))) {
5510 "ETHTOOL_WRITE_EEPROM Err: Magic value ");
5511 DBG_PRINT(ERR_DBG, "is wrong, Its not 0x%x\n",
5517 data = (u32) data_buf[cnt] & 0x000000FF;
5519 valid = (u32) (data << 24);
5523 if (write_eeprom(sp, (eeprom->offset + cnt), valid, 0)) {
5525 "ETHTOOL_WRITE_EEPROM Err: Cannot ");
5527 "write into the specified offset\n");
5538 * s2io_register_test - reads and writes into all clock domains.
5539 * @sp : private member of the device structure, which is a pointer to the
5540 * s2io_nic structure.
5541 * @data : variable that returns the result of each of the test conducted b
5544 * Read and write into all clock domains. The NIC has 3 clock domains,
5545 * see that registers in all the three regions are accessible.
5550 static int s2io_register_test(struct s2io_nic * sp, uint64_t * data)
5552 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5553 u64 val64 = 0, exp_val;
5556 val64 = readq(&bar0->pif_rd_swapper_fb);
5557 if (val64 != 0x123456789abcdefULL) {
5559 DBG_PRINT(INFO_DBG, "Read Test level 1 fails\n");
5562 val64 = readq(&bar0->rmac_pause_cfg);
5563 if (val64 != 0xc000ffff00000000ULL) {
5565 DBG_PRINT(INFO_DBG, "Read Test level 2 fails\n");
5568 val64 = readq(&bar0->rx_queue_cfg);
5569 if (sp->device_type == XFRAME_II_DEVICE)
5570 exp_val = 0x0404040404040404ULL;
5572 exp_val = 0x0808080808080808ULL;
5573 if (val64 != exp_val) {
5575 DBG_PRINT(INFO_DBG, "Read Test level 3 fails\n");
5578 val64 = readq(&bar0->xgxs_efifo_cfg);
5579 if (val64 != 0x000000001923141EULL) {
5581 DBG_PRINT(INFO_DBG, "Read Test level 4 fails\n");
5584 val64 = 0x5A5A5A5A5A5A5A5AULL;
5585 writeq(val64, &bar0->xmsi_data);
5586 val64 = readq(&bar0->xmsi_data);
5587 if (val64 != 0x5A5A5A5A5A5A5A5AULL) {
5589 DBG_PRINT(ERR_DBG, "Write Test level 1 fails\n");
5592 val64 = 0xA5A5A5A5A5A5A5A5ULL;
5593 writeq(val64, &bar0->xmsi_data);
5594 val64 = readq(&bar0->xmsi_data);
5595 if (val64 != 0xA5A5A5A5A5A5A5A5ULL) {
5597 DBG_PRINT(ERR_DBG, "Write Test level 2 fails\n");
5605 * s2io_eeprom_test - to verify that EEprom in the xena can be programmed.
5606 * @sp : private member of the device structure, which is a pointer to the
5607 * s2io_nic structure.
5608 * @data:variable that returns the result of each of the test conducted by
5611 * Verify that EEPROM in the xena can be programmed using I2C_CONTROL
5617 static int s2io_eeprom_test(struct s2io_nic * sp, uint64_t * data)
5620 u64 ret_data, org_4F0, org_7F0;
5621 u8 saved_4F0 = 0, saved_7F0 = 0;
5622 struct net_device *dev = sp->dev;
5624 /* Test Write Error at offset 0 */
5625 /* Note that SPI interface allows write access to all areas
5626 * of EEPROM. Hence doing all negative testing only for Xframe I.
5628 if (sp->device_type == XFRAME_I_DEVICE)
5629 if (!write_eeprom(sp, 0, 0, 3))
5632 /* Save current values at offsets 0x4F0 and 0x7F0 */
5633 if (!read_eeprom(sp, 0x4F0, &org_4F0))
5635 if (!read_eeprom(sp, 0x7F0, &org_7F0))
5638 /* Test Write at offset 4f0 */
5639 if (write_eeprom(sp, 0x4F0, 0x012345, 3))
5641 if (read_eeprom(sp, 0x4F0, &ret_data))
5644 if (ret_data != 0x012345) {
5645 DBG_PRINT(ERR_DBG, "%s: eeprom test error at offset 0x4F0. "
5646 "Data written %llx Data read %llx\n",
5647 dev->name, (unsigned long long)0x12345,
5648 (unsigned long long)ret_data);
5652 /* Reset the EEPROM data go FFFF */
5653 write_eeprom(sp, 0x4F0, 0xFFFFFF, 3);
5655 /* Test Write Request Error at offset 0x7c */
5656 if (sp->device_type == XFRAME_I_DEVICE)
5657 if (!write_eeprom(sp, 0x07C, 0, 3))
5660 /* Test Write Request at offset 0x7f0 */
5661 if (write_eeprom(sp, 0x7F0, 0x012345, 3))
5663 if (read_eeprom(sp, 0x7F0, &ret_data))
5666 if (ret_data != 0x012345) {
5667 DBG_PRINT(ERR_DBG, "%s: eeprom test error at offset 0x7F0. "
5668 "Data written %llx Data read %llx\n",
5669 dev->name, (unsigned long long)0x12345,
5670 (unsigned long long)ret_data);
5674 /* Reset the EEPROM data go FFFF */
5675 write_eeprom(sp, 0x7F0, 0xFFFFFF, 3);
5677 if (sp->device_type == XFRAME_I_DEVICE) {
5678 /* Test Write Error at offset 0x80 */
5679 if (!write_eeprom(sp, 0x080, 0, 3))
5682 /* Test Write Error at offset 0xfc */
5683 if (!write_eeprom(sp, 0x0FC, 0, 3))
5686 /* Test Write Error at offset 0x100 */
5687 if (!write_eeprom(sp, 0x100, 0, 3))
5690 /* Test Write Error at offset 4ec */
5691 if (!write_eeprom(sp, 0x4EC, 0, 3))
5695 /* Restore values at offsets 0x4F0 and 0x7F0 */
5697 write_eeprom(sp, 0x4F0, org_4F0, 3);
5699 write_eeprom(sp, 0x7F0, org_7F0, 3);
5706 * s2io_bist_test - invokes the MemBist test of the card .
5707 * @sp : private member of the device structure, which is a pointer to the
5708 * s2io_nic structure.
5709 * @data:variable that returns the result of each of the test conducted by
5712 * This invokes the MemBist test of the card. We give around
5713 * 2 secs time for the Test to complete. If it's still not complete
5714 * within this peiod, we consider that the test failed.
5716 * 0 on success and -1 on failure.
5719 static int s2io_bist_test(struct s2io_nic * sp, uint64_t * data)
5722 int cnt = 0, ret = -1;
5724 pci_read_config_byte(sp->pdev, PCI_BIST, &bist);
5725 bist |= PCI_BIST_START;
5726 pci_write_config_word(sp->pdev, PCI_BIST, bist);
5729 pci_read_config_byte(sp->pdev, PCI_BIST, &bist);
5730 if (!(bist & PCI_BIST_START)) {
5731 *data = (bist & PCI_BIST_CODE_MASK);
5743 * s2io-link_test - verifies the link state of the nic
5744 * @sp ; private member of the device structure, which is a pointer to the
5745 * s2io_nic structure.
5746 * @data: variable that returns the result of each of the test conducted by
5749 * The function verifies the link state of the NIC and updates the input
5750 * argument 'data' appropriately.
5755 static int s2io_link_test(struct s2io_nic * sp, uint64_t * data)
5757 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5760 val64 = readq(&bar0->adapter_status);
5761 if(!(LINK_IS_UP(val64)))
5770 * s2io_rldram_test - offline test for access to the RldRam chip on the NIC
5771 * @sp - private member of the device structure, which is a pointer to the
5772 * s2io_nic structure.
5773 * @data - variable that returns the result of each of the test
5774 * conducted by the driver.
5776 * This is one of the offline test that tests the read and write
5777 * access to the RldRam chip on the NIC.
5782 static int s2io_rldram_test(struct s2io_nic * sp, uint64_t * data)
5784 struct XENA_dev_config __iomem *bar0 = sp->bar0;
5786 int cnt, iteration = 0, test_fail = 0;
5788 val64 = readq(&bar0->adapter_control);
5789 val64 &= ~ADAPTER_ECC_EN;
5790 writeq(val64, &bar0->adapter_control);
5792 val64 = readq(&bar0->mc_rldram_test_ctrl);
5793 val64 |= MC_RLDRAM_TEST_MODE;
5794 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_test_ctrl, LF);
5796 val64 = readq(&bar0->mc_rldram_mrs);
5797 val64 |= MC_RLDRAM_QUEUE_SIZE_ENABLE;
5798 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF);
5800 val64 |= MC_RLDRAM_MRS_ENABLE;
5801 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_mrs, UF);
5803 while (iteration < 2) {
5804 val64 = 0x55555555aaaa0000ULL;
5805 if (iteration == 1) {
5806 val64 ^= 0xFFFFFFFFFFFF0000ULL;
5808 writeq(val64, &bar0->mc_rldram_test_d0);
5810 val64 = 0xaaaa5a5555550000ULL;
5811 if (iteration == 1) {
5812 val64 ^= 0xFFFFFFFFFFFF0000ULL;
5814 writeq(val64, &bar0->mc_rldram_test_d1);
5816 val64 = 0x55aaaaaaaa5a0000ULL;
5817 if (iteration == 1) {
5818 val64 ^= 0xFFFFFFFFFFFF0000ULL;
5820 writeq(val64, &bar0->mc_rldram_test_d2);
5822 val64 = (u64) (0x0000003ffffe0100ULL);
5823 writeq(val64, &bar0->mc_rldram_test_add);
5825 val64 = MC_RLDRAM_TEST_MODE | MC_RLDRAM_TEST_WRITE |
5827 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_test_ctrl, LF);
5829 for (cnt = 0; cnt < 5; cnt++) {
5830 val64 = readq(&bar0->mc_rldram_test_ctrl);
5831 if (val64 & MC_RLDRAM_TEST_DONE)
5839 val64 = MC_RLDRAM_TEST_MODE | MC_RLDRAM_TEST_GO;
5840 SPECIAL_REG_WRITE(val64, &bar0->mc_rldram_test_ctrl, LF);
5842 for (cnt = 0; cnt < 5; cnt++) {
5843 val64 = readq(&bar0->mc_rldram_test_ctrl);
5844 if (val64 & MC_RLDRAM_TEST_DONE)
5852 val64 = readq(&bar0->mc_rldram_test_ctrl);
5853 if (!(val64 & MC_RLDRAM_TEST_PASS))
5861 /* Bring the adapter out of test mode */
5862 SPECIAL_REG_WRITE(0, &bar0->mc_rldram_test_ctrl, LF);
5868 * s2io_ethtool_test - conducts 6 tsets to determine the health of card.
5869 * @sp : private member of the device structure, which is a pointer to the
5870 * s2io_nic structure.
5871 * @ethtest : pointer to a ethtool command specific structure that will be
5872 * returned to the user.
5873 * @data : variable that returns the result of each of the test
5874 * conducted by the driver.
5876 * This function conducts 6 tests ( 4 offline and 2 online) to determine
5877 * the health of the card.
5882 static void s2io_ethtool_test(struct net_device *dev,
5883 struct ethtool_test *ethtest,
5886 struct s2io_nic *sp = dev->priv;
5887 int orig_state = netif_running(sp->dev);
5889 if (ethtest->flags == ETH_TEST_FL_OFFLINE) {
5890 /* Offline Tests. */
5892 s2io_close(sp->dev);
5894 if (s2io_register_test(sp, &data[0]))
5895 ethtest->flags |= ETH_TEST_FL_FAILED;
5899 if (s2io_rldram_test(sp, &data[3]))
5900 ethtest->flags |= ETH_TEST_FL_FAILED;
5904 if (s2io_eeprom_test(sp, &data[1]))
5905 ethtest->flags |= ETH_TEST_FL_FAILED;
5907 if (s2io_bist_test(sp, &data[4]))
5908 ethtest->flags |= ETH_TEST_FL_FAILED;
5918 "%s: is not up, cannot run test\n",
5927 if (s2io_link_test(sp, &data[2]))
5928 ethtest->flags |= ETH_TEST_FL_FAILED;
5937 static void s2io_get_ethtool_stats(struct net_device *dev,
5938 struct ethtool_stats *estats,
5942 struct s2io_nic *sp = dev->priv;
5943 struct stat_block *stat_info = sp->mac_control.stats_info;
5945 s2io_updt_stats(sp);
5947 (u64)le32_to_cpu(stat_info->tmac_frms_oflow) << 32 |
5948 le32_to_cpu(stat_info->tmac_frms);
5950 (u64)le32_to_cpu(stat_info->tmac_data_octets_oflow) << 32 |
5951 le32_to_cpu(stat_info->tmac_data_octets);
5952 tmp_stats[i++] = le64_to_cpu(stat_info->tmac_drop_frms);
5954 (u64)le32_to_cpu(stat_info->tmac_mcst_frms_oflow) << 32 |
5955 le32_to_cpu(stat_info->tmac_mcst_frms);
5957 (u64)le32_to_cpu(stat_info->tmac_bcst_frms_oflow) << 32 |
5958 le32_to_cpu(stat_info->tmac_bcst_frms);
5959 tmp_stats[i++] = le64_to_cpu(stat_info->tmac_pause_ctrl_frms);
5961 (u64)le32_to_cpu(stat_info->tmac_ttl_octets_oflow) << 32 |
5962 le32_to_cpu(stat_info->tmac_ttl_octets);
5964 (u64)le32_to_cpu(stat_info->tmac_ucst_frms_oflow) << 32 |
5965 le32_to_cpu(stat_info->tmac_ucst_frms);
5967 (u64)le32_to_cpu(stat_info->tmac_nucst_frms_oflow) << 32 |
5968 le32_to_cpu(stat_info->tmac_nucst_frms);
5970 (u64)le32_to_cpu(stat_info->tmac_any_err_frms_oflow) << 32 |
5971 le32_to_cpu(stat_info->tmac_any_err_frms);
5972 tmp_stats[i++] = le64_to_cpu(stat_info->tmac_ttl_less_fb_octets);
5973 tmp_stats[i++] = le64_to_cpu(stat_info->tmac_vld_ip_octets);
5975 (u64)le32_to_cpu(stat_info->tmac_vld_ip_oflow) << 32 |
5976 le32_to_cpu(stat_info->tmac_vld_ip);
5978 (u64)le32_to_cpu(stat_info->tmac_drop_ip_oflow) << 32 |
5979 le32_to_cpu(stat_info->tmac_drop_ip);
5981 (u64)le32_to_cpu(stat_info->tmac_icmp_oflow) << 32 |
5982 le32_to_cpu(stat_info->tmac_icmp);
5984 (u64)le32_to_cpu(stat_info->tmac_rst_tcp_oflow) << 32 |
5985 le32_to_cpu(stat_info->tmac_rst_tcp);
5986 tmp_stats[i++] = le64_to_cpu(stat_info->tmac_tcp);
5987 tmp_stats[i++] = (u64)le32_to_cpu(stat_info->tmac_udp_oflow) << 32 |
5988 le32_to_cpu(stat_info->tmac_udp);
5990 (u64)le32_to_cpu(stat_info->rmac_vld_frms_oflow) << 32 |
5991 le32_to_cpu(stat_info->rmac_vld_frms);
5993 (u64)le32_to_cpu(stat_info->rmac_data_octets_oflow) << 32 |
5994 le32_to_cpu(stat_info->rmac_data_octets);
5995 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_fcs_err_frms);
5996 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_drop_frms);
5998 (u64)le32_to_cpu(stat_info->rmac_vld_mcst_frms_oflow) << 32 |
5999 le32_to_cpu(stat_info->rmac_vld_mcst_frms);
6001 (u64)le32_to_cpu(stat_info->rmac_vld_bcst_frms_oflow) << 32 |
6002 le32_to_cpu(stat_info->rmac_vld_bcst_frms);
6003 tmp_stats[i++] = le32_to_cpu(stat_info->rmac_in_rng_len_err_frms);
6004 tmp_stats[i++] = le32_to_cpu(stat_info->rmac_out_rng_len_err_frms);
6005 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_long_frms);
6006 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_pause_ctrl_frms);
6007 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_unsup_ctrl_frms);
6009 (u64)le32_to_cpu(stat_info->rmac_ttl_octets_oflow) << 32 |
6010 le32_to_cpu(stat_info->rmac_ttl_octets);
6012 (u64)le32_to_cpu(stat_info->rmac_accepted_ucst_frms_oflow)
6013 << 32 | le32_to_cpu(stat_info->rmac_accepted_ucst_frms);
6015 (u64)le32_to_cpu(stat_info->rmac_accepted_nucst_frms_oflow)
6016 << 32 | le32_to_cpu(stat_info->rmac_accepted_nucst_frms);
6018 (u64)le32_to_cpu(stat_info->rmac_discarded_frms_oflow) << 32 |
6019 le32_to_cpu(stat_info->rmac_discarded_frms);
6021 (u64)le32_to_cpu(stat_info->rmac_drop_events_oflow)
6022 << 32 | le32_to_cpu(stat_info->rmac_drop_events);
6023 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_ttl_less_fb_octets);
6024 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_ttl_frms);
6026 (u64)le32_to_cpu(stat_info->rmac_usized_frms_oflow) << 32 |
6027 le32_to_cpu(stat_info->rmac_usized_frms);
6029 (u64)le32_to_cpu(stat_info->rmac_osized_frms_oflow) << 32 |
6030 le32_to_cpu(stat_info->rmac_osized_frms);
6032 (u64)le32_to_cpu(stat_info->rmac_frag_frms_oflow) << 32 |
6033 le32_to_cpu(stat_info->rmac_frag_frms);
6035 (u64)le32_to_cpu(stat_info->rmac_jabber_frms_oflow) << 32 |
6036 le32_to_cpu(stat_info->rmac_jabber_frms);
6037 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_ttl_64_frms);
6038 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_ttl_65_127_frms);
6039 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_ttl_128_255_frms);
6040 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_ttl_256_511_frms);
6041 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_ttl_512_1023_frms);
6042 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_ttl_1024_1518_frms);
6044 (u64)le32_to_cpu(stat_info->rmac_ip_oflow) << 32 |
6045 le32_to_cpu(stat_info->rmac_ip);
6046 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_ip_octets);
6047 tmp_stats[i++] = le32_to_cpu(stat_info->rmac_hdr_err_ip);
6049 (u64)le32_to_cpu(stat_info->rmac_drop_ip_oflow) << 32 |
6050 le32_to_cpu(stat_info->rmac_drop_ip);
6052 (u64)le32_to_cpu(stat_info->rmac_icmp_oflow) << 32 |
6053 le32_to_cpu(stat_info->rmac_icmp);
6054 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_tcp);
6056 (u64)le32_to_cpu(stat_info->rmac_udp_oflow) << 32 |
6057 le32_to_cpu(stat_info->rmac_udp);
6059 (u64)le32_to_cpu(stat_info->rmac_err_drp_udp_oflow) << 32 |
6060 le32_to_cpu(stat_info->rmac_err_drp_udp);
6061 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_xgmii_err_sym);
6062 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_frms_q0);
6063 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_frms_q1);
6064 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_frms_q2);
6065 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_frms_q3);
6066 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_frms_q4);
6067 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_frms_q5);
6068 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_frms_q6);
6069 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_frms_q7);
6070 tmp_stats[i++] = le16_to_cpu(stat_info->rmac_full_q0);
6071 tmp_stats[i++] = le16_to_cpu(stat_info->rmac_full_q1);
6072 tmp_stats[i++] = le16_to_cpu(stat_info->rmac_full_q2);
6073 tmp_stats[i++] = le16_to_cpu(stat_info->rmac_full_q3);
6074 tmp_stats[i++] = le16_to_cpu(stat_info->rmac_full_q4);
6075 tmp_stats[i++] = le16_to_cpu(stat_info->rmac_full_q5);
6076 tmp_stats[i++] = le16_to_cpu(stat_info->rmac_full_q6);
6077 tmp_stats[i++] = le16_to_cpu(stat_info->rmac_full_q7);
6079 (u64)le32_to_cpu(stat_info->rmac_pause_cnt_oflow) << 32 |
6080 le32_to_cpu(stat_info->rmac_pause_cnt);
6081 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_xgmii_data_err_cnt);
6082 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_xgmii_ctrl_err_cnt);
6084 (u64)le32_to_cpu(stat_info->rmac_accepted_ip_oflow) << 32 |
6085 le32_to_cpu(stat_info->rmac_accepted_ip);
6086 tmp_stats[i++] = le32_to_cpu(stat_info->rmac_err_tcp);
6087 tmp_stats[i++] = le32_to_cpu(stat_info->rd_req_cnt);
6088 tmp_stats[i++] = le32_to_cpu(stat_info->new_rd_req_cnt);
6089 tmp_stats[i++] = le32_to_cpu(stat_info->new_rd_req_rtry_cnt);
6090 tmp_stats[i++] = le32_to_cpu(stat_info->rd_rtry_cnt);
6091 tmp_stats[i++] = le32_to_cpu(stat_info->wr_rtry_rd_ack_cnt);
6092 tmp_stats[i++] = le32_to_cpu(stat_info->wr_req_cnt);
6093 tmp_stats[i++] = le32_to_cpu(stat_info->new_wr_req_cnt);
6094 tmp_stats[i++] = le32_to_cpu(stat_info->new_wr_req_rtry_cnt);
6095 tmp_stats[i++] = le32_to_cpu(stat_info->wr_rtry_cnt);
6096 tmp_stats[i++] = le32_to_cpu(stat_info->wr_disc_cnt);
6097 tmp_stats[i++] = le32_to_cpu(stat_info->rd_rtry_wr_ack_cnt);
6098 tmp_stats[i++] = le32_to_cpu(stat_info->txp_wr_cnt);
6099 tmp_stats[i++] = le32_to_cpu(stat_info->txd_rd_cnt);
6100 tmp_stats[i++] = le32_to_cpu(stat_info->txd_wr_cnt);
6101 tmp_stats[i++] = le32_to_cpu(stat_info->rxd_rd_cnt);
6102 tmp_stats[i++] = le32_to_cpu(stat_info->rxd_wr_cnt);
6103 tmp_stats[i++] = le32_to_cpu(stat_info->txf_rd_cnt);
6104 tmp_stats[i++] = le32_to_cpu(stat_info->rxf_wr_cnt);
6106 /* Enhanced statistics exist only for Hercules */
6107 if(sp->device_type == XFRAME_II_DEVICE) {
6109 le64_to_cpu(stat_info->rmac_ttl_1519_4095_frms);
6111 le64_to_cpu(stat_info->rmac_ttl_4096_8191_frms);
6113 le64_to_cpu(stat_info->rmac_ttl_8192_max_frms);
6114 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_ttl_gt_max_frms);
6115 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_osized_alt_frms);
6116 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_jabber_alt_frms);
6117 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_gt_max_alt_frms);
6118 tmp_stats[i++] = le64_to_cpu(stat_info->rmac_vlan_frms);
6119 tmp_stats[i++] = le32_to_cpu(stat_info->rmac_len_discard);
6120 tmp_stats[i++] = le32_to_cpu(stat_info->rmac_fcs_discard);
6121 tmp_stats[i++] = le32_to_cpu(stat_info->rmac_pf_discard);
6122 tmp_stats[i++] = le32_to_cpu(stat_info->rmac_da_discard);
6123 tmp_stats[i++] = le32_to_cpu(stat_info->rmac_red_discard);
6124 tmp_stats[i++] = le32_to_cpu(stat_info->rmac_rts_discard);
6125 tmp_stats[i++] = le32_to_cpu(stat_info->rmac_ingm_full_discard);
6126 tmp_stats[i++] = le32_to_cpu(stat_info->link_fault_cnt);
6130 tmp_stats[i++] = stat_info->sw_stat.single_ecc_errs;
6131 tmp_stats[i++] = stat_info->sw_stat.double_ecc_errs;
6132 tmp_stats[i++] = stat_info->sw_stat.parity_err_cnt;
6133 tmp_stats[i++] = stat_info->sw_stat.serious_err_cnt;
6134 tmp_stats[i++] = stat_info->sw_stat.soft_reset_cnt;
6135 tmp_stats[i++] = stat_info->sw_stat.fifo_full_cnt;
6136 for (k = 0; k < MAX_RX_RINGS; k++)
6137 tmp_stats[i++] = stat_info->sw_stat.ring_full_cnt[k];
6138 tmp_stats[i++] = stat_info->xpak_stat.alarm_transceiver_temp_high;
6139 tmp_stats[i++] = stat_info->xpak_stat.alarm_transceiver_temp_low;
6140 tmp_stats[i++] = stat_info->xpak_stat.alarm_laser_bias_current_high;
6141 tmp_stats[i++] = stat_info->xpak_stat.alarm_laser_bias_current_low;
6142 tmp_stats[i++] = stat_info->xpak_stat.alarm_laser_output_power_high;
6143 tmp_stats[i++] = stat_info->xpak_stat.alarm_laser_output_power_low;
6144 tmp_stats[i++] = stat_info->xpak_stat.warn_transceiver_temp_high;
6145 tmp_stats[i++] = stat_info->xpak_stat.warn_transceiver_temp_low;
6146 tmp_stats[i++] = stat_info->xpak_stat.warn_laser_bias_current_high;
6147 tmp_stats[i++] = stat_info->xpak_stat.warn_laser_bias_current_low;
6148 tmp_stats[i++] = stat_info->xpak_stat.warn_laser_output_power_high;
6149 tmp_stats[i++] = stat_info->xpak_stat.warn_laser_output_power_low;
6150 tmp_stats[i++] = stat_info->sw_stat.clubbed_frms_cnt;
6151 tmp_stats[i++] = stat_info->sw_stat.sending_both;
6152 tmp_stats[i++] = stat_info->sw_stat.outof_sequence_pkts;
6153 tmp_stats[i++] = stat_info->sw_stat.flush_max_pkts;
6154 if (stat_info->sw_stat.num_aggregations) {
6155 u64 tmp = stat_info->sw_stat.sum_avg_pkts_aggregated;
6158 * Since 64-bit divide does not work on all platforms,
6159 * do repeated subtraction.
6161 while (tmp >= stat_info->sw_stat.num_aggregations) {
6162 tmp -= stat_info->sw_stat.num_aggregations;
6165 tmp_stats[i++] = count;
6169 tmp_stats[i++] = stat_info->sw_stat.mem_alloc_fail_cnt;
6170 tmp_stats[i++] = stat_info->sw_stat.pci_map_fail_cnt;
6171 tmp_stats[i++] = stat_info->sw_stat.watchdog_timer_cnt;
6172 tmp_stats[i++] = stat_info->sw_stat.mem_allocated;
6173 tmp_stats[i++] = stat_info->sw_stat.mem_freed;
6174 tmp_stats[i++] = stat_info->sw_stat.link_up_cnt;
6175 tmp_stats[i++] = stat_info->sw_stat.link_down_cnt;
6176 tmp_stats[i++] = stat_info->sw_stat.link_up_time;
6177 tmp_stats[i++] = stat_info->sw_stat.link_down_time;
6179 tmp_stats[i++] = stat_info->sw_stat.tx_buf_abort_cnt;
6180 tmp_stats[i++] = stat_info->sw_stat.tx_desc_abort_cnt;
6181 tmp_stats[i++] = stat_info->sw_stat.tx_parity_err_cnt;
6182 tmp_stats[i++] = stat_info->sw_stat.tx_link_loss_cnt;
6183 tmp_stats[i++] = stat_info->sw_stat.tx_list_proc_err_cnt;
6185 tmp_stats[i++] = stat_info->sw_stat.rx_parity_err_cnt;
6186 tmp_stats[i++] = stat_info->sw_stat.rx_abort_cnt;
6187 tmp_stats[i++] = stat_info->sw_stat.rx_parity_abort_cnt;
6188 tmp_stats[i++] = stat_info->sw_stat.rx_rda_fail_cnt;
6189 tmp_stats[i++] = stat_info->sw_stat.rx_unkn_prot_cnt;
6190 tmp_stats[i++] = stat_info->sw_stat.rx_fcs_err_cnt;
6191 tmp_stats[i++] = stat_info->sw_stat.rx_buf_size_err_cnt;
6192 tmp_stats[i++] = stat_info->sw_stat.rx_rxd_corrupt_cnt;
6193 tmp_stats[i++] = stat_info->sw_stat.rx_unkn_err_cnt;
6194 tmp_stats[i++] = stat_info->sw_stat.tda_err_cnt;
6195 tmp_stats[i++] = stat_info->sw_stat.pfc_err_cnt;
6196 tmp_stats[i++] = stat_info->sw_stat.pcc_err_cnt;
6197 tmp_stats[i++] = stat_info->sw_stat.tti_err_cnt;
6198 tmp_stats[i++] = stat_info->sw_stat.tpa_err_cnt;
6199 tmp_stats[i++] = stat_info->sw_stat.sm_err_cnt;
6200 tmp_stats[i++] = stat_info->sw_stat.lso_err_cnt;
6201 tmp_stats[i++] = stat_info->sw_stat.mac_tmac_err_cnt;
6202 tmp_stats[i++] = stat_info->sw_stat.mac_rmac_err_cnt;
6203 tmp_stats[i++] = stat_info->sw_stat.xgxs_txgxs_err_cnt;
6204 tmp_stats[i++] = stat_info->sw_stat.xgxs_rxgxs_err_cnt;
6205 tmp_stats[i++] = stat_info->sw_stat.rc_err_cnt;
6206 tmp_stats[i++] = stat_info->sw_stat.prc_pcix_err_cnt;
6207 tmp_stats[i++] = stat_info->sw_stat.rpa_err_cnt;
6208 tmp_stats[i++] = stat_info->sw_stat.rda_err_cnt;
6209 tmp_stats[i++] = stat_info->sw_stat.rti_err_cnt;
6210 tmp_stats[i++] = stat_info->sw_stat.mc_err_cnt;
6213 static int s2io_ethtool_get_regs_len(struct net_device *dev)
6215 return (XENA_REG_SPACE);
6219 static u32 s2io_ethtool_get_rx_csum(struct net_device * dev)
6221 struct s2io_nic *sp = dev->priv;
6223 return (sp->rx_csum);
6226 static int s2io_ethtool_set_rx_csum(struct net_device *dev, u32 data)
6228 struct s2io_nic *sp = dev->priv;
6238 static int s2io_get_eeprom_len(struct net_device *dev)
6240 return (XENA_EEPROM_SPACE);
6243 static int s2io_get_sset_count(struct net_device *dev, int sset)
6245 struct s2io_nic *sp = dev->priv;
6249 return S2IO_TEST_LEN;
6251 switch(sp->device_type) {
6252 case XFRAME_I_DEVICE:
6253 return XFRAME_I_STAT_LEN;
6254 case XFRAME_II_DEVICE:
6255 return XFRAME_II_STAT_LEN;
6264 static void s2io_ethtool_get_strings(struct net_device *dev,
6265 u32 stringset, u8 * data)
6268 struct s2io_nic *sp = dev->priv;
6270 switch (stringset) {
6272 memcpy(data, s2io_gstrings, S2IO_STRINGS_LEN);
6275 stat_size = sizeof(ethtool_xena_stats_keys);
6276 memcpy(data, ðtool_xena_stats_keys,stat_size);
6277 if(sp->device_type == XFRAME_II_DEVICE) {
6278 memcpy(data + stat_size,
6279 ðtool_enhanced_stats_keys,
6280 sizeof(ethtool_enhanced_stats_keys));
6281 stat_size += sizeof(ethtool_enhanced_stats_keys);
6284 memcpy(data + stat_size, ðtool_driver_stats_keys,
6285 sizeof(ethtool_driver_stats_keys));
6289 static int s2io_ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
6292 dev->features |= NETIF_F_IP_CSUM;
6294 dev->features &= ~NETIF_F_IP_CSUM;
6299 static u32 s2io_ethtool_op_get_tso(struct net_device *dev)
6301 return (dev->features & NETIF_F_TSO) != 0;
6303 static int s2io_ethtool_op_set_tso(struct net_device *dev, u32 data)
6306 dev->features |= (NETIF_F_TSO | NETIF_F_TSO6);
6308 dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
6313 static const struct ethtool_ops netdev_ethtool_ops = {
6314 .get_settings = s2io_ethtool_gset,
6315 .set_settings = s2io_ethtool_sset,
6316 .get_drvinfo = s2io_ethtool_gdrvinfo,
6317 .get_regs_len = s2io_ethtool_get_regs_len,
6318 .get_regs = s2io_ethtool_gregs,
6319 .get_link = ethtool_op_get_link,
6320 .get_eeprom_len = s2io_get_eeprom_len,
6321 .get_eeprom = s2io_ethtool_geeprom,
6322 .set_eeprom = s2io_ethtool_seeprom,
6323 .get_ringparam = s2io_ethtool_gringparam,
6324 .get_pauseparam = s2io_ethtool_getpause_data,
6325 .set_pauseparam = s2io_ethtool_setpause_data,
6326 .get_rx_csum = s2io_ethtool_get_rx_csum,
6327 .set_rx_csum = s2io_ethtool_set_rx_csum,
6328 .set_tx_csum = s2io_ethtool_op_set_tx_csum,
6329 .set_sg = ethtool_op_set_sg,
6330 .get_tso = s2io_ethtool_op_get_tso,
6331 .set_tso = s2io_ethtool_op_set_tso,
6332 .set_ufo = ethtool_op_set_ufo,
6333 .self_test = s2io_ethtool_test,
6334 .get_strings = s2io_ethtool_get_strings,
6335 .phys_id = s2io_ethtool_idnic,
6336 .get_ethtool_stats = s2io_get_ethtool_stats,
6337 .get_sset_count = s2io_get_sset_count,
6341 * s2io_ioctl - Entry point for the Ioctl
6342 * @dev : Device pointer.
6343 * @ifr : An IOCTL specefic structure, that can contain a pointer to
6344 * a proprietary structure used to pass information to the driver.
6345 * @cmd : This is used to distinguish between the different commands that
6346 * can be passed to the IOCTL functions.
6348 * Currently there are no special functionality supported in IOCTL, hence
6349 * function always return EOPNOTSUPPORTED
6352 static int s2io_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
6358 * s2io_change_mtu - entry point to change MTU size for the device.
6359 * @dev : device pointer.
6360 * @new_mtu : the new MTU size for the device.
6361 * Description: A driver entry point to change MTU size for the device.
6362 * Before changing the MTU the device must be stopped.
6364 * 0 on success and an appropriate (-)ve integer as defined in errno.h
6368 static int s2io_change_mtu(struct net_device *dev, int new_mtu)
6370 struct s2io_nic *sp = dev->priv;
6373 if ((new_mtu < MIN_MTU) || (new_mtu > S2IO_JUMBO_SIZE)) {
6374 DBG_PRINT(ERR_DBG, "%s: MTU size is invalid.\n",
6380 if (netif_running(dev)) {
6382 netif_stop_queue(dev);
6383 ret = s2io_card_up(sp);
6385 DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n",
6389 if (netif_queue_stopped(dev))
6390 netif_wake_queue(dev);
6391 } else { /* Device is down */
6392 struct XENA_dev_config __iomem *bar0 = sp->bar0;
6393 u64 val64 = new_mtu;
6395 writeq(vBIT(val64, 2, 14), &bar0->rmac_max_pyld_len);
6402 * s2io_tasklet - Bottom half of the ISR.
6403 * @dev_adr : address of the device structure in dma_addr_t format.
6405 * This is the tasklet or the bottom half of the ISR. This is
6406 * an extension of the ISR which is scheduled by the scheduler to be run
6407 * when the load on the CPU is low. All low priority tasks of the ISR can
6408 * be pushed into the tasklet. For now the tasklet is used only to
6409 * replenish the Rx buffers in the Rx buffer descriptors.
6414 static void s2io_tasklet(unsigned long dev_addr)
6416 struct net_device *dev = (struct net_device *) dev_addr;
6417 struct s2io_nic *sp = dev->priv;
6419 struct mac_info *mac_control;
6420 struct config_param *config;
6422 mac_control = &sp->mac_control;
6423 config = &sp->config;
6425 if (!TASKLET_IN_USE) {
6426 for (i = 0; i < config->rx_ring_num; i++) {
6427 ret = fill_rx_buffers(sp, i);
6428 if (ret == -ENOMEM) {
6429 DBG_PRINT(INFO_DBG, "%s: Out of ",
6431 DBG_PRINT(INFO_DBG, "memory in tasklet\n");
6433 } else if (ret == -EFILL) {
6435 "%s: Rx Ring %d is full\n",
6440 clear_bit(0, (&sp->tasklet_status));
6445 * s2io_set_link - Set the LInk status
6446 * @data: long pointer to device private structue
6447 * Description: Sets the link status for the adapter
6450 static void s2io_set_link(struct work_struct *work)
6452 struct s2io_nic *nic = container_of(work, struct s2io_nic, set_link_task);
6453 struct net_device *dev = nic->dev;
6454 struct XENA_dev_config __iomem *bar0 = nic->bar0;
6460 if (!netif_running(dev))
6463 if (test_and_set_bit(__S2IO_STATE_LINK_TASK, &(nic->state))) {
6464 /* The card is being reset, no point doing anything */
6468 subid = nic->pdev->subsystem_device;
6469 if (s2io_link_fault_indication(nic) == MAC_RMAC_ERR_TIMER) {
6471 * Allow a small delay for the NICs self initiated
6472 * cleanup to complete.
6477 val64 = readq(&bar0->adapter_status);
6478 if (LINK_IS_UP(val64)) {
6479 if (!(readq(&bar0->adapter_control) & ADAPTER_CNTL_EN)) {
6480 if (verify_xena_quiescence(nic)) {
6481 val64 = readq(&bar0->adapter_control);
6482 val64 |= ADAPTER_CNTL_EN;
6483 writeq(val64, &bar0->adapter_control);
6484 if (CARDS_WITH_FAULTY_LINK_INDICATORS(
6485 nic->device_type, subid)) {
6486 val64 = readq(&bar0->gpio_control);
6487 val64 |= GPIO_CTRL_GPIO_0;
6488 writeq(val64, &bar0->gpio_control);
6489 val64 = readq(&bar0->gpio_control);
6491 val64 |= ADAPTER_LED_ON;
6492 writeq(val64, &bar0->adapter_control);
6494 nic->device_enabled_once = TRUE;
6496 DBG_PRINT(ERR_DBG, "%s: Error: ", dev->name);
6497 DBG_PRINT(ERR_DBG, "device is not Quiescent\n");
6498 netif_stop_queue(dev);
6501 val64 = readq(&bar0->adapter_control);
6502 val64 |= ADAPTER_LED_ON;
6503 writeq(val64, &bar0->adapter_control);
6504 s2io_link(nic, LINK_UP);
6506 if (CARDS_WITH_FAULTY_LINK_INDICATORS(nic->device_type,
6508 val64 = readq(&bar0->gpio_control);
6509 val64 &= ~GPIO_CTRL_GPIO_0;
6510 writeq(val64, &bar0->gpio_control);
6511 val64 = readq(&bar0->gpio_control);
6514 val64 = readq(&bar0->adapter_control);
6515 val64 = val64 &(~ADAPTER_LED_ON);
6516 writeq(val64, &bar0->adapter_control);
6517 s2io_link(nic, LINK_DOWN);
6519 clear_bit(__S2IO_STATE_LINK_TASK, &(nic->state));
6525 static int set_rxd_buffer_pointer(struct s2io_nic *sp, struct RxD_t *rxdp,
6527 struct sk_buff **skb, u64 *temp0, u64 *temp1,
6528 u64 *temp2, int size)
6530 struct net_device *dev = sp->dev;
6531 struct swStat *stats = &sp->mac_control.stats_info->sw_stat;
6533 if ((sp->rxd_mode == RXD_MODE_1) && (rxdp->Host_Control == 0)) {
6534 struct RxD1 *rxdp1 = (struct RxD1 *)rxdp;
6537 DBG_PRINT(INFO_DBG, "SKB is not NULL\n");
6539 * As Rx frame are not going to be processed,
6540 * using same mapped address for the Rxd
6543 rxdp1->Buffer0_ptr = *temp0;
6545 *skb = dev_alloc_skb(size);
6547 DBG_PRINT(INFO_DBG, "%s: Out of ", dev->name);
6548 DBG_PRINT(INFO_DBG, "memory to allocate ");
6549 DBG_PRINT(INFO_DBG, "1 buf mode SKBs\n");
6550 sp->mac_control.stats_info->sw_stat. \
6551 mem_alloc_fail_cnt++;
6554 sp->mac_control.stats_info->sw_stat.mem_allocated
6555 += (*skb)->truesize;
6556 /* storing the mapped addr in a temp variable
6557 * such it will be used for next rxd whose
6558 * Host Control is NULL
6560 rxdp1->Buffer0_ptr = *temp0 =
6561 pci_map_single( sp->pdev, (*skb)->data,
6562 size - NET_IP_ALIGN,
6563 PCI_DMA_FROMDEVICE);
6564 if( (rxdp1->Buffer0_ptr == 0) ||
6565 (rxdp1->Buffer0_ptr == DMA_ERROR_CODE)) {
6566 goto memalloc_failed;
6568 rxdp->Host_Control = (unsigned long) (*skb);
6570 } else if ((sp->rxd_mode == RXD_MODE_3B) && (rxdp->Host_Control == 0)) {
6571 struct RxD3 *rxdp3 = (struct RxD3 *)rxdp;
6572 /* Two buffer Mode */
6574 rxdp3->Buffer2_ptr = *temp2;
6575 rxdp3->Buffer0_ptr = *temp0;
6576 rxdp3->Buffer1_ptr = *temp1;
6578 *skb = dev_alloc_skb(size);
6580 DBG_PRINT(INFO_DBG, "%s: Out of ", dev->name);
6581 DBG_PRINT(INFO_DBG, "memory to allocate ");
6582 DBG_PRINT(INFO_DBG, "2 buf mode SKBs\n");
6583 sp->mac_control.stats_info->sw_stat. \
6584 mem_alloc_fail_cnt++;
6587 sp->mac_control.stats_info->sw_stat.mem_allocated
6588 += (*skb)->truesize;
6589 rxdp3->Buffer2_ptr = *temp2 =
6590 pci_map_single(sp->pdev, (*skb)->data,
6592 PCI_DMA_FROMDEVICE);
6593 if( (rxdp3->Buffer2_ptr == 0) ||
6594 (rxdp3->Buffer2_ptr == DMA_ERROR_CODE)) {
6595 goto memalloc_failed;
6597 rxdp3->Buffer0_ptr = *temp0 =
6598 pci_map_single( sp->pdev, ba->ba_0, BUF0_LEN,
6599 PCI_DMA_FROMDEVICE);
6600 if( (rxdp3->Buffer0_ptr == 0) ||
6601 (rxdp3->Buffer0_ptr == DMA_ERROR_CODE)) {
6602 pci_unmap_single (sp->pdev,
6603 (dma_addr_t)rxdp3->Buffer2_ptr,
6604 dev->mtu + 4, PCI_DMA_FROMDEVICE);
6605 goto memalloc_failed;
6607 rxdp->Host_Control = (unsigned long) (*skb);
6609 /* Buffer-1 will be dummy buffer not used */
6610 rxdp3->Buffer1_ptr = *temp1 =
6611 pci_map_single(sp->pdev, ba->ba_1, BUF1_LEN,
6612 PCI_DMA_FROMDEVICE);
6613 if( (rxdp3->Buffer1_ptr == 0) ||
6614 (rxdp3->Buffer1_ptr == DMA_ERROR_CODE)) {
6615 pci_unmap_single (sp->pdev,
6616 (dma_addr_t)rxdp3->Buffer0_ptr,
6617 BUF0_LEN, PCI_DMA_FROMDEVICE);
6618 pci_unmap_single (sp->pdev,
6619 (dma_addr_t)rxdp3->Buffer2_ptr,
6620 dev->mtu + 4, PCI_DMA_FROMDEVICE);
6621 goto memalloc_failed;
6627 stats->pci_map_fail_cnt++;
6628 stats->mem_freed += (*skb)->truesize;
6629 dev_kfree_skb(*skb);
6633 static void set_rxd_buffer_size(struct s2io_nic *sp, struct RxD_t *rxdp,
6636 struct net_device *dev = sp->dev;
6637 if (sp->rxd_mode == RXD_MODE_1) {
6638 rxdp->Control_2 = SET_BUFFER0_SIZE_1( size - NET_IP_ALIGN);
6639 } else if (sp->rxd_mode == RXD_MODE_3B) {
6640 rxdp->Control_2 = SET_BUFFER0_SIZE_3(BUF0_LEN);
6641 rxdp->Control_2 |= SET_BUFFER1_SIZE_3(1);
6642 rxdp->Control_2 |= SET_BUFFER2_SIZE_3( dev->mtu + 4);
6646 static int rxd_owner_bit_reset(struct s2io_nic *sp)
6648 int i, j, k, blk_cnt = 0, size;
6649 struct mac_info * mac_control = &sp->mac_control;
6650 struct config_param *config = &sp->config;
6651 struct net_device *dev = sp->dev;
6652 struct RxD_t *rxdp = NULL;
6653 struct sk_buff *skb = NULL;
6654 struct buffAdd *ba = NULL;
6655 u64 temp0_64 = 0, temp1_64 = 0, temp2_64 = 0;
6657 /* Calculate the size based on ring mode */
6658 size = dev->mtu + HEADER_ETHERNET_II_802_3_SIZE +
6659 HEADER_802_2_SIZE + HEADER_SNAP_SIZE;
6660 if (sp->rxd_mode == RXD_MODE_1)
6661 size += NET_IP_ALIGN;
6662 else if (sp->rxd_mode == RXD_MODE_3B)
6663 size = dev->mtu + ALIGN_SIZE + BUF0_LEN + 4;
6665 for (i = 0; i < config->rx_ring_num; i++) {
6666 blk_cnt = config->rx_cfg[i].num_rxd /
6667 (rxd_count[sp->rxd_mode] +1);
6669 for (j = 0; j < blk_cnt; j++) {
6670 for (k = 0; k < rxd_count[sp->rxd_mode]; k++) {
6671 rxdp = mac_control->rings[i].
6672 rx_blocks[j].rxds[k].virt_addr;
6673 if(sp->rxd_mode == RXD_MODE_3B)
6674 ba = &mac_control->rings[i].ba[j][k];
6675 if (set_rxd_buffer_pointer(sp, rxdp, ba,
6676 &skb,(u64 *)&temp0_64,
6683 set_rxd_buffer_size(sp, rxdp, size);
6685 /* flip the Ownership bit to Hardware */
6686 rxdp->Control_1 |= RXD_OWN_XENA;
6694 static int s2io_add_isr(struct s2io_nic * sp)
6697 struct net_device *dev = sp->dev;
6700 if (sp->config.intr_type == MSI_X)
6701 ret = s2io_enable_msi_x(sp);
6703 DBG_PRINT(ERR_DBG, "%s: Defaulting to INTA\n", dev->name);
6704 sp->config.intr_type = INTA;
6707 /* Store the values of the MSIX table in the struct s2io_nic structure */
6708 store_xmsi_data(sp);
6710 /* After proper initialization of H/W, register ISR */
6711 if (sp->config.intr_type == MSI_X) {
6712 int i, msix_tx_cnt=0,msix_rx_cnt=0;
6714 for (i=1; (sp->s2io_entries[i].in_use == MSIX_FLG); i++) {
6715 if (sp->s2io_entries[i].type == MSIX_FIFO_TYPE) {
6716 sprintf(sp->desc[i], "%s:MSI-X-%d-TX",
6718 err = request_irq(sp->entries[i].vector,
6719 s2io_msix_fifo_handle, 0, sp->desc[i],
6720 sp->s2io_entries[i].arg);
6721 /* If either data or addr is zero print it */
6722 if(!(sp->msix_info[i].addr &&
6723 sp->msix_info[i].data)) {
6724 DBG_PRINT(ERR_DBG, "%s @ Addr:0x%llx"
6725 "Data:0x%lx\n",sp->desc[i],
6726 (unsigned long long)
6727 sp->msix_info[i].addr,
6729 ntohl(sp->msix_info[i].data));
6734 sprintf(sp->desc[i], "%s:MSI-X-%d-RX",
6736 err = request_irq(sp->entries[i].vector,
6737 s2io_msix_ring_handle, 0, sp->desc[i],
6738 sp->s2io_entries[i].arg);
6739 /* If either data or addr is zero print it */
6740 if(!(sp->msix_info[i].addr &&
6741 sp->msix_info[i].data)) {
6742 DBG_PRINT(ERR_DBG, "%s @ Addr:0x%llx"
6743 "Data:0x%lx\n",sp->desc[i],
6744 (unsigned long long)
6745 sp->msix_info[i].addr,
6747 ntohl(sp->msix_info[i].data));
6753 remove_msix_isr(sp);
6754 DBG_PRINT(ERR_DBG,"%s:MSI-X-%d registration "
6755 "failed\n", dev->name, i);
6756 DBG_PRINT(ERR_DBG, "%s: defaulting to INTA\n",
6758 sp->config.intr_type = INTA;
6761 sp->s2io_entries[i].in_use = MSIX_REGISTERED_SUCCESS;
6764 printk(KERN_INFO "MSI-X-TX %d entries enabled\n",
6766 printk(KERN_INFO "MSI-X-RX %d entries enabled\n",
6770 if (sp->config.intr_type == INTA) {
6771 err = request_irq((int) sp->pdev->irq, s2io_isr, IRQF_SHARED,
6774 DBG_PRINT(ERR_DBG, "%s: ISR registration failed\n",
6781 static void s2io_rem_isr(struct s2io_nic * sp)
6783 if (sp->config.intr_type == MSI_X)
6784 remove_msix_isr(sp);
6786 remove_inta_isr(sp);
6789 static void do_s2io_card_down(struct s2io_nic * sp, int do_io)
6792 struct XENA_dev_config __iomem *bar0 = sp->bar0;
6793 unsigned long flags;
6794 register u64 val64 = 0;
6795 struct config_param *config;
6796 config = &sp->config;
6798 if (!is_s2io_card_up(sp))
6801 del_timer_sync(&sp->alarm_timer);
6802 /* If s2io_set_link task is executing, wait till it completes. */
6803 while (test_and_set_bit(__S2IO_STATE_LINK_TASK, &(sp->state))) {
6806 clear_bit(__S2IO_STATE_CARD_UP, &sp->state);
6810 napi_disable(&sp->napi);
6812 /* disable Tx and Rx traffic on the NIC */
6819 tasklet_kill(&sp->task);
6821 /* Check if the device is Quiescent and then Reset the NIC */
6823 /* As per the HW requirement we need to replenish the
6824 * receive buffer to avoid the ring bump. Since there is
6825 * no intention of processing the Rx frame at this pointwe are
6826 * just settting the ownership bit of rxd in Each Rx
6827 * ring to HW and set the appropriate buffer size
6828 * based on the ring mode
6830 rxd_owner_bit_reset(sp);
6832 val64 = readq(&bar0->adapter_status);
6833 if (verify_xena_quiescence(sp)) {
6834 if(verify_pcc_quiescent(sp, sp->device_enabled_once))
6842 "s2io_close:Device not Quiescent ");
6843 DBG_PRINT(ERR_DBG, "adaper status reads 0x%llx\n",
6844 (unsigned long long) val64);
6851 spin_lock_irqsave(&sp->tx_lock, flags);
6852 /* Free all Tx buffers */
6853 free_tx_buffers(sp);
6854 spin_unlock_irqrestore(&sp->tx_lock, flags);
6856 /* Free all Rx buffers */
6857 spin_lock_irqsave(&sp->rx_lock, flags);
6858 free_rx_buffers(sp);
6859 spin_unlock_irqrestore(&sp->rx_lock, flags);
6861 clear_bit(__S2IO_STATE_LINK_TASK, &(sp->state));
6864 static void s2io_card_down(struct s2io_nic * sp)
6866 do_s2io_card_down(sp, 1);
6869 static int s2io_card_up(struct s2io_nic * sp)
6872 struct mac_info *mac_control;
6873 struct config_param *config;
6874 struct net_device *dev = (struct net_device *) sp->dev;
6877 /* Initialize the H/W I/O registers */
6880 DBG_PRINT(ERR_DBG, "%s: H/W initialization failed\n",
6888 * Initializing the Rx buffers. For now we are considering only 1
6889 * Rx ring and initializing buffers into 30 Rx blocks
6891 mac_control = &sp->mac_control;
6892 config = &sp->config;
6894 for (i = 0; i < config->rx_ring_num; i++) {
6895 if ((ret = fill_rx_buffers(sp, i))) {
6896 DBG_PRINT(ERR_DBG, "%s: Out of memory in Open\n",
6899 free_rx_buffers(sp);
6902 DBG_PRINT(INFO_DBG, "Buf in ring:%d is %d:\n", i,
6903 atomic_read(&sp->rx_bufs_left[i]));
6906 /* Initialise napi */
6908 napi_enable(&sp->napi);
6910 /* Maintain the state prior to the open */
6911 if (sp->promisc_flg)
6912 sp->promisc_flg = 0;
6913 if (sp->m_cast_flg) {
6915 sp->all_multi_pos= 0;
6918 /* Setting its receive mode */
6919 s2io_set_multicast(dev);
6922 /* Initialize max aggregatable pkts per session based on MTU */
6923 sp->lro_max_aggr_per_sess = ((1<<16) - 1) / dev->mtu;
6924 /* Check if we can use(if specified) user provided value */
6925 if (lro_max_pkts < sp->lro_max_aggr_per_sess)
6926 sp->lro_max_aggr_per_sess = lro_max_pkts;
6929 /* Enable Rx Traffic and interrupts on the NIC */
6930 if (start_nic(sp)) {
6931 DBG_PRINT(ERR_DBG, "%s: Starting NIC failed\n", dev->name);
6933 free_rx_buffers(sp);
6937 /* Add interrupt service routine */
6938 if (s2io_add_isr(sp) != 0) {
6939 if (sp->config.intr_type == MSI_X)
6942 free_rx_buffers(sp);
6946 S2IO_TIMER_CONF(sp->alarm_timer, s2io_alarm_handle, sp, (HZ/2));
6948 /* Enable tasklet for the device */
6949 tasklet_init(&sp->task, s2io_tasklet, (unsigned long) dev);
6951 /* Enable select interrupts */
6952 en_dis_err_alarms(sp, ENA_ALL_INTRS, ENABLE_INTRS);
6953 if (sp->config.intr_type != INTA)
6954 en_dis_able_nic_intrs(sp, ENA_ALL_INTRS, DISABLE_INTRS);
6956 interruptible = TX_TRAFFIC_INTR | RX_TRAFFIC_INTR;
6957 interruptible |= TX_PIC_INTR;
6958 en_dis_able_nic_intrs(sp, interruptible, ENABLE_INTRS);
6961 set_bit(__S2IO_STATE_CARD_UP, &sp->state);
6966 * s2io_restart_nic - Resets the NIC.
6967 * @data : long pointer to the device private structure
6969 * This function is scheduled to be run by the s2io_tx_watchdog
6970 * function after 0.5 secs to reset the NIC. The idea is to reduce
6971 * the run time of the watch dog routine which is run holding a
6975 static void s2io_restart_nic(struct work_struct *work)
6977 struct s2io_nic *sp = container_of(work, struct s2io_nic, rst_timer_task);
6978 struct net_device *dev = sp->dev;
6982 if (!netif_running(dev))
6986 if (s2io_card_up(sp)) {
6987 DBG_PRINT(ERR_DBG, "%s: Device bring up failed\n",
6990 netif_wake_queue(dev);
6991 DBG_PRINT(ERR_DBG, "%s: was reset by Tx watchdog timer\n",
6998 * s2io_tx_watchdog - Watchdog for transmit side.
6999 * @dev : Pointer to net device structure
7001 * This function is triggered if the Tx Queue is stopped
7002 * for a pre-defined amount of time when the Interface is still up.
7003 * If the Interface is jammed in such a situation, the hardware is
7004 * reset (by s2io_close) and restarted again (by s2io_open) to
7005 * overcome any problem that might have been caused in the hardware.
7010 static void s2io_tx_watchdog(struct net_device *dev)
7012 struct s2io_nic *sp = dev->priv;
7014 if (netif_carrier_ok(dev)) {
7015 sp->mac_control.stats_info->sw_stat.watchdog_timer_cnt++;
7016 schedule_work(&sp->rst_timer_task);
7017 sp->mac_control.stats_info->sw_stat.soft_reset_cnt++;
7022 * rx_osm_handler - To perform some OS related operations on SKB.
7023 * @sp: private member of the device structure,pointer to s2io_nic structure.
7024 * @skb : the socket buffer pointer.
7025 * @len : length of the packet
7026 * @cksum : FCS checksum of the frame.
7027 * @ring_no : the ring from which this RxD was extracted.
7029 * This function is called by the Rx interrupt serivce routine to perform
7030 * some OS related operations on the SKB before passing it to the upper
7031 * layers. It mainly checks if the checksum is OK, if so adds it to the
7032 * SKBs cksum variable, increments the Rx packet count and passes the SKB
7033 * to the upper layer. If the checksum is wrong, it increments the Rx
7034 * packet error count, frees the SKB and returns error.
7036 * SUCCESS on success and -1 on failure.
7038 static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp)
7040 struct s2io_nic *sp = ring_data->nic;
7041 struct net_device *dev = (struct net_device *) sp->dev;
7042 struct sk_buff *skb = (struct sk_buff *)
7043 ((unsigned long) rxdp->Host_Control);
7044 int ring_no = ring_data->ring_no;
7045 u16 l3_csum, l4_csum;
7046 unsigned long long err = rxdp->Control_1 & RXD_T_CODE;
7053 /* Check for parity error */
7055 sp->mac_control.stats_info->sw_stat.parity_err_cnt++;
7057 err_mask = err >> 48;
7060 sp->mac_control.stats_info->sw_stat.
7061 rx_parity_err_cnt++;
7065 sp->mac_control.stats_info->sw_stat.
7070 sp->mac_control.stats_info->sw_stat.
7071 rx_parity_abort_cnt++;
7075 sp->mac_control.stats_info->sw_stat.
7080 sp->mac_control.stats_info->sw_stat.
7085 sp->mac_control.stats_info->sw_stat.
7090 sp->mac_control.stats_info->sw_stat.
7091 rx_buf_size_err_cnt++;
7095 sp->mac_control.stats_info->sw_stat.
7096 rx_rxd_corrupt_cnt++;
7100 sp->mac_control.stats_info->sw_stat.
7105 * Drop the packet if bad transfer code. Exception being
7106 * 0x5, which could be due to unsupported IPv6 extension header.
7107 * In this case, we let stack handle the packet.
7108 * Note that in this case, since checksum will be incorrect,
7109 * stack will validate the same.
7111 if (err_mask != 0x5) {
7112 DBG_PRINT(ERR_DBG, "%s: Rx error Value: 0x%x\n",
7113 dev->name, err_mask);
7114 sp->stats.rx_crc_errors++;
7115 sp->mac_control.stats_info->sw_stat.mem_freed
7118 atomic_dec(&sp->rx_bufs_left[ring_no]);
7119 rxdp->Host_Control = 0;
7124 /* Updating statistics */
7125 sp->stats.rx_packets++;
7126 rxdp->Host_Control = 0;
7127 if (sp->rxd_mode == RXD_MODE_1) {
7128 int len = RXD_GET_BUFFER0_SIZE_1(rxdp->Control_2);
7130 sp->stats.rx_bytes += len;
7133 } else if (sp->rxd_mode == RXD_MODE_3B) {
7134 int get_block = ring_data->rx_curr_get_info.block_index;
7135 int get_off = ring_data->rx_curr_get_info.offset;
7136 int buf0_len = RXD_GET_BUFFER0_SIZE_3(rxdp->Control_2);
7137 int buf2_len = RXD_GET_BUFFER2_SIZE_3(rxdp->Control_2);
7138 unsigned char *buff = skb_push(skb, buf0_len);
7140 struct buffAdd *ba = &ring_data->ba[get_block][get_off];
7141 sp->stats.rx_bytes += buf0_len + buf2_len;
7142 memcpy(buff, ba->ba_0, buf0_len);
7143 skb_put(skb, buf2_len);
7146 if ((rxdp->Control_1 & TCP_OR_UDP_FRAME) && ((!sp->lro) ||
7147 (sp->lro && (!(rxdp->Control_1 & RXD_FRAME_IP_FRAG)))) &&
7149 l3_csum = RXD_GET_L3_CKSUM(rxdp->Control_1);
7150 l4_csum = RXD_GET_L4_CKSUM(rxdp->Control_1);
7151 if ((l3_csum == L3_CKSUM_OK) && (l4_csum == L4_CKSUM_OK)) {
7153 * NIC verifies if the Checksum of the received
7154 * frame is Ok or not and accordingly returns
7155 * a flag in the RxD.
7157 skb->ip_summed = CHECKSUM_UNNECESSARY;
7163 ret = s2io_club_tcp_session(skb->data, &tcp,
7167 case 3: /* Begin anew */
7170 case 1: /* Aggregate */
7172 lro_append_pkt(sp, lro,
7176 case 4: /* Flush session */
7178 lro_append_pkt(sp, lro,
7180 queue_rx_frame(lro->parent);
7181 clear_lro_session(lro);
7182 sp->mac_control.stats_info->
7183 sw_stat.flush_max_pkts++;
7186 case 2: /* Flush both */
7187 lro->parent->data_len =
7189 sp->mac_control.stats_info->
7190 sw_stat.sending_both++;
7191 queue_rx_frame(lro->parent);
7192 clear_lro_session(lro);
7194 case 0: /* sessions exceeded */
7195 case -1: /* non-TCP or not
7199 * First pkt in session not
7200 * L3/L4 aggregatable
7205 "%s: Samadhana!!\n",
7212 * Packet with erroneous checksum, let the
7213 * upper layers deal with it.
7215 skb->ip_summed = CHECKSUM_NONE;
7218 skb->ip_summed = CHECKSUM_NONE;
7220 sp->mac_control.stats_info->sw_stat.mem_freed += skb->truesize;
7222 skb->protocol = eth_type_trans(skb, dev);
7223 if ((sp->vlgrp && RXD_GET_VLAN_TAG(rxdp->Control_2) &&
7225 /* Queueing the vlan frame to the upper layer */
7227 vlan_hwaccel_receive_skb(skb, sp->vlgrp,
7228 RXD_GET_VLAN_TAG(rxdp->Control_2));
7230 vlan_hwaccel_rx(skb, sp->vlgrp,
7231 RXD_GET_VLAN_TAG(rxdp->Control_2));
7234 netif_receive_skb(skb);
7240 queue_rx_frame(skb);
7242 dev->last_rx = jiffies;
7244 atomic_dec(&sp->rx_bufs_left[ring_no]);
7249 * s2io_link - stops/starts the Tx queue.
7250 * @sp : private member of the device structure, which is a pointer to the
7251 * s2io_nic structure.
7252 * @link : inidicates whether link is UP/DOWN.
7254 * This function stops/starts the Tx queue depending on whether the link
7255 * status of the NIC is is down or up. This is called by the Alarm
7256 * interrupt handler whenever a link change interrupt comes up.
7261 static void s2io_link(struct s2io_nic * sp, int link)
7263 struct net_device *dev = (struct net_device *) sp->dev;
7265 if (link != sp->last_link_state) {
7266 if (link == LINK_DOWN) {
7267 DBG_PRINT(ERR_DBG, "%s: Link down\n", dev->name);
7268 netif_carrier_off(dev);
7269 if(sp->mac_control.stats_info->sw_stat.link_up_cnt)
7270 sp->mac_control.stats_info->sw_stat.link_up_time =
7271 jiffies - sp->start_time;
7272 sp->mac_control.stats_info->sw_stat.link_down_cnt++;
7274 DBG_PRINT(ERR_DBG, "%s: Link Up\n", dev->name);
7275 if (sp->mac_control.stats_info->sw_stat.link_down_cnt)
7276 sp->mac_control.stats_info->sw_stat.link_down_time =
7277 jiffies - sp->start_time;
7278 sp->mac_control.stats_info->sw_stat.link_up_cnt++;
7279 netif_carrier_on(dev);
7282 sp->last_link_state = link;
7283 sp->start_time = jiffies;
7287 * s2io_init_pci -Initialization of PCI and PCI-X configuration registers .
7288 * @sp : private member of the device structure, which is a pointer to the
7289 * s2io_nic structure.
7291 * This function initializes a few of the PCI and PCI-X configuration registers
7292 * with recommended values.
7297 static void s2io_init_pci(struct s2io_nic * sp)
7299 u16 pci_cmd = 0, pcix_cmd = 0;
7301 /* Enable Data Parity Error Recovery in PCI-X command register. */
7302 pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER,
7304 pci_write_config_word(sp->pdev, PCIX_COMMAND_REGISTER,
7306 pci_read_config_word(sp->pdev, PCIX_COMMAND_REGISTER,
7309 /* Set the PErr Response bit in PCI command register. */
7310 pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd);
7311 pci_write_config_word(sp->pdev, PCI_COMMAND,
7312 (pci_cmd | PCI_COMMAND_PARITY));
7313 pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd);
7316 static int s2io_verify_parm(struct pci_dev *pdev, u8 *dev_intr_type)
7318 if ( tx_fifo_num > 8) {
7319 DBG_PRINT(ERR_DBG, "s2io: Requested number of Tx fifos not "
7321 DBG_PRINT(ERR_DBG, "s2io: Default to 8 Tx fifos\n");
7324 if ( rx_ring_num > 8) {
7325 DBG_PRINT(ERR_DBG, "s2io: Requested number of Rx rings not "
7327 DBG_PRINT(ERR_DBG, "s2io: Default to 8 Rx rings\n");
7330 if (*dev_intr_type != INTA)
7333 if ((*dev_intr_type != INTA) && (*dev_intr_type != MSI_X)) {
7334 DBG_PRINT(ERR_DBG, "s2io: Wrong intr_type requested. "
7335 "Defaulting to INTA\n");
7336 *dev_intr_type = INTA;
7339 if ((*dev_intr_type == MSI_X) &&
7340 ((pdev->device != PCI_DEVICE_ID_HERC_WIN) &&
7341 (pdev->device != PCI_DEVICE_ID_HERC_UNI))) {
7342 DBG_PRINT(ERR_DBG, "s2io: Xframe I does not support MSI_X. "
7343 "Defaulting to INTA\n");
7344 *dev_intr_type = INTA;
7347 if ((rx_ring_mode != 1) && (rx_ring_mode != 2)) {
7348 DBG_PRINT(ERR_DBG, "s2io: Requested ring mode not supported\n");
7349 DBG_PRINT(ERR_DBG, "s2io: Defaulting to 1-buffer mode\n");
7356 * rts_ds_steer - Receive traffic steering based on IPv4 or IPv6 TOS
7357 * or Traffic class respectively.
7358 * @nic: device peivate variable
7359 * Description: The function configures the receive steering to
7360 * desired receive ring.
7361 * Return Value: SUCCESS on success and
7362 * '-1' on failure (endian settings incorrect).
7364 static int rts_ds_steer(struct s2io_nic *nic, u8 ds_codepoint, u8 ring)
7366 struct XENA_dev_config __iomem *bar0 = nic->bar0;
7367 register u64 val64 = 0;
7369 if (ds_codepoint > 63)
7372 val64 = RTS_DS_MEM_DATA(ring);
7373 writeq(val64, &bar0->rts_ds_mem_data);
7375 val64 = RTS_DS_MEM_CTRL_WE |
7376 RTS_DS_MEM_CTRL_STROBE_NEW_CMD |
7377 RTS_DS_MEM_CTRL_OFFSET(ds_codepoint);
7379 writeq(val64, &bar0->rts_ds_mem_ctrl);
7381 return wait_for_cmd_complete(&bar0->rts_ds_mem_ctrl,
7382 RTS_DS_MEM_CTRL_STROBE_CMD_BEING_EXECUTED,
7387 * s2io_init_nic - Initialization of the adapter .
7388 * @pdev : structure containing the PCI related information of the device.
7389 * @pre: List of PCI devices supported by the driver listed in s2io_tbl.
7391 * The function initializes an adapter identified by the pci_dec structure.
7392 * All OS related initialization including memory and device structure and
7393 * initlaization of the device private variable is done. Also the swapper
7394 * control register is initialized to enable read and write into the I/O
7395 * registers of the device.
7397 * returns 0 on success and negative on failure.
7400 static int __devinit
7401 s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
7403 struct s2io_nic *sp;
7404 struct net_device *dev;
7406 int dma_flag = FALSE;
7407 u32 mac_up, mac_down;
7408 u64 val64 = 0, tmp64 = 0;
7409 struct XENA_dev_config __iomem *bar0 = NULL;
7411 struct mac_info *mac_control;
7412 struct config_param *config;
7414 u8 dev_intr_type = intr_type;
7415 DECLARE_MAC_BUF(mac);
7417 if ((ret = s2io_verify_parm(pdev, &dev_intr_type)))
7420 if ((ret = pci_enable_device(pdev))) {
7422 "s2io_init_nic: pci_enable_device failed\n");
7426 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
7427 DBG_PRINT(INIT_DBG, "s2io_init_nic: Using 64bit DMA\n");
7429 if (pci_set_consistent_dma_mask
7430 (pdev, DMA_64BIT_MASK)) {
7432 "Unable to obtain 64bit DMA for \
7433 consistent allocations\n");
7434 pci_disable_device(pdev);
7437 } else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
7438 DBG_PRINT(INIT_DBG, "s2io_init_nic: Using 32bit DMA\n");
7440 pci_disable_device(pdev);
7443 if ((ret = pci_request_regions(pdev, s2io_driver_name))) {
7444 DBG_PRINT(ERR_DBG, "%s: Request Regions failed - %x \n", __FUNCTION__, ret);
7445 pci_disable_device(pdev);
7449 dev = alloc_etherdev(sizeof(struct s2io_nic));
7451 DBG_PRINT(ERR_DBG, "Device allocation failed\n");
7452 pci_disable_device(pdev);
7453 pci_release_regions(pdev);
7457 pci_set_master(pdev);
7458 pci_set_drvdata(pdev, dev);
7459 SET_NETDEV_DEV(dev, &pdev->dev);
7461 /* Private member variable initialized to s2io NIC structure */
7463 memset(sp, 0, sizeof(struct s2io_nic));
7466 sp->high_dma_flag = dma_flag;
7467 sp->device_enabled_once = FALSE;
7468 if (rx_ring_mode == 1)
7469 sp->rxd_mode = RXD_MODE_1;
7470 if (rx_ring_mode == 2)
7471 sp->rxd_mode = RXD_MODE_3B;
7473 sp->config.intr_type = dev_intr_type;
7475 if ((pdev->device == PCI_DEVICE_ID_HERC_WIN) ||
7476 (pdev->device == PCI_DEVICE_ID_HERC_UNI))
7477 sp->device_type = XFRAME_II_DEVICE;
7479 sp->device_type = XFRAME_I_DEVICE;
7481 sp->lro = lro_enable;
7483 /* Initialize some PCI/PCI-X fields of the NIC. */
7487 * Setting the device configuration parameters.
7488 * Most of these parameters can be specified by the user during
7489 * module insertion as they are module loadable parameters. If
7490 * these parameters are not not specified during load time, they
7491 * are initialized with default values.
7493 mac_control = &sp->mac_control;
7494 config = &sp->config;
7496 config->napi = napi;
7498 /* Tx side parameters. */
7499 config->tx_fifo_num = tx_fifo_num;
7500 for (i = 0; i < MAX_TX_FIFOS; i++) {
7501 config->tx_cfg[i].fifo_len = tx_fifo_len[i];
7502 config->tx_cfg[i].fifo_priority = i;
7505 /* mapping the QoS priority to the configured fifos */
7506 for (i = 0; i < MAX_TX_FIFOS; i++)
7507 config->fifo_mapping[i] = fifo_map[config->tx_fifo_num][i];
7509 config->tx_intr_type = TXD_INT_TYPE_UTILZ;
7510 for (i = 0; i < config->tx_fifo_num; i++) {
7511 config->tx_cfg[i].f_no_snoop =
7512 (NO_SNOOP_TXD | NO_SNOOP_TXD_BUFFER);
7513 if (config->tx_cfg[i].fifo_len < 65) {
7514 config->tx_intr_type = TXD_INT_TYPE_PER_LIST;
7518 /* + 2 because one Txd for skb->data and one Txd for UFO */
7519 config->max_txds = MAX_SKB_FRAGS + 2;
7521 /* Rx side parameters. */
7522 config->rx_ring_num = rx_ring_num;
7523 for (i = 0; i < MAX_RX_RINGS; i++) {
7524 config->rx_cfg[i].num_rxd = rx_ring_sz[i] *
7525 (rxd_count[sp->rxd_mode] + 1);
7526 config->rx_cfg[i].ring_priority = i;
7529 for (i = 0; i < rx_ring_num; i++) {
7530 config->rx_cfg[i].ring_org = RING_ORG_BUFF1;
7531 config->rx_cfg[i].f_no_snoop =
7532 (NO_SNOOP_RXD | NO_SNOOP_RXD_BUFFER);
7535 /* Setting Mac Control parameters */
7536 mac_control->rmac_pause_time = rmac_pause_time;
7537 mac_control->mc_pause_threshold_q0q3 = mc_pause_threshold_q0q3;
7538 mac_control->mc_pause_threshold_q4q7 = mc_pause_threshold_q4q7;
7541 /* Initialize Ring buffer parameters. */
7542 for (i = 0; i < config->rx_ring_num; i++)
7543 atomic_set(&sp->rx_bufs_left[i], 0);
7545 /* initialize the shared memory used by the NIC and the host */
7546 if (init_shared_mem(sp)) {
7547 DBG_PRINT(ERR_DBG, "%s: Memory allocation failed\n",
7550 goto mem_alloc_failed;
7553 sp->bar0 = ioremap(pci_resource_start(pdev, 0),
7554 pci_resource_len(pdev, 0));
7556 DBG_PRINT(ERR_DBG, "%s: Neterion: cannot remap io mem1\n",
7559 goto bar0_remap_failed;
7562 sp->bar1 = ioremap(pci_resource_start(pdev, 2),
7563 pci_resource_len(pdev, 2));
7565 DBG_PRINT(ERR_DBG, "%s: Neterion: cannot remap io mem2\n",
7568 goto bar1_remap_failed;
7571 dev->irq = pdev->irq;
7572 dev->base_addr = (unsigned long) sp->bar0;
7574 /* Initializing the BAR1 address as the start of the FIFO pointer. */
7575 for (j = 0; j < MAX_TX_FIFOS; j++) {
7576 mac_control->tx_FIFO_start[j] = (struct TxFIFO_element __iomem *)
7577 (sp->bar1 + (j * 0x00020000));
7580 /* Driver entry points */
7581 dev->open = &s2io_open;
7582 dev->stop = &s2io_close;
7583 dev->hard_start_xmit = &s2io_xmit;
7584 dev->get_stats = &s2io_get_stats;
7585 dev->set_multicast_list = &s2io_set_multicast;
7586 dev->do_ioctl = &s2io_ioctl;
7587 dev->set_mac_address = &s2io_set_mac_addr;
7588 dev->change_mtu = &s2io_change_mtu;
7589 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
7590 dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
7591 dev->vlan_rx_register = s2io_vlan_rx_register;
7594 * will use eth_mac_addr() for dev->set_mac_address
7595 * mac address will be set every time dev->open() is called
7597 netif_napi_add(dev, &sp->napi, s2io_poll, 32);
7599 #ifdef CONFIG_NET_POLL_CONTROLLER
7600 dev->poll_controller = s2io_netpoll;
7603 dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
7604 if (sp->high_dma_flag == TRUE)
7605 dev->features |= NETIF_F_HIGHDMA;
7606 dev->features |= NETIF_F_TSO;
7607 dev->features |= NETIF_F_TSO6;
7608 if ((sp->device_type & XFRAME_II_DEVICE) && (ufo)) {
7609 dev->features |= NETIF_F_UFO;
7610 dev->features |= NETIF_F_HW_CSUM;
7613 dev->tx_timeout = &s2io_tx_watchdog;
7614 dev->watchdog_timeo = WATCH_DOG_TIMEOUT;
7615 INIT_WORK(&sp->rst_timer_task, s2io_restart_nic);
7616 INIT_WORK(&sp->set_link_task, s2io_set_link);
7618 pci_save_state(sp->pdev);
7620 /* Setting swapper control on the NIC, for proper reset operation */
7621 if (s2io_set_swapper(sp)) {
7622 DBG_PRINT(ERR_DBG, "%s:swapper settings are wrong\n",
7625 goto set_swap_failed;
7628 /* Verify if the Herc works on the slot its placed into */
7629 if (sp->device_type & XFRAME_II_DEVICE) {
7630 mode = s2io_verify_pci_mode(sp);
7632 DBG_PRINT(ERR_DBG, "%s: ", __FUNCTION__);
7633 DBG_PRINT(ERR_DBG, " Unsupported PCI bus mode\n");
7635 goto set_swap_failed;
7639 /* Not needed for Herc */
7640 if (sp->device_type & XFRAME_I_DEVICE) {
7642 * Fix for all "FFs" MAC address problems observed on
7645 fix_mac_address(sp);
7650 * MAC address initialization.
7651 * For now only one mac address will be read and used.
7654 val64 = RMAC_ADDR_CMD_MEM_RD | RMAC_ADDR_CMD_MEM_STROBE_NEW_CMD |
7655 RMAC_ADDR_CMD_MEM_OFFSET(0 + MAC_MAC_ADDR_START_OFFSET);
7656 writeq(val64, &bar0->rmac_addr_cmd_mem);
7657 wait_for_cmd_complete(&bar0->rmac_addr_cmd_mem,
7658 RMAC_ADDR_CMD_MEM_STROBE_CMD_EXECUTING, S2IO_BIT_RESET);
7659 tmp64 = readq(&bar0->rmac_addr_data0_mem);
7660 mac_down = (u32) tmp64;
7661 mac_up = (u32) (tmp64 >> 32);
7663 sp->def_mac_addr[0].mac_addr[3] = (u8) (mac_up);
7664 sp->def_mac_addr[0].mac_addr[2] = (u8) (mac_up >> 8);
7665 sp->def_mac_addr[0].mac_addr[1] = (u8) (mac_up >> 16);
7666 sp->def_mac_addr[0].mac_addr[0] = (u8) (mac_up >> 24);
7667 sp->def_mac_addr[0].mac_addr[5] = (u8) (mac_down >> 16);
7668 sp->def_mac_addr[0].mac_addr[4] = (u8) (mac_down >> 24);
7670 /* Set the factory defined MAC address initially */
7671 dev->addr_len = ETH_ALEN;
7672 memcpy(dev->dev_addr, sp->def_mac_addr, ETH_ALEN);
7673 memcpy(dev->perm_addr, dev->dev_addr, ETH_ALEN);
7675 /* Store the values of the MSIX table in the s2io_nic structure */
7676 store_xmsi_data(sp);
7677 /* reset Nic and bring it to known state */
7681 * Initialize the tasklet status and link state flags
7682 * and the card state parameter
7684 sp->tasklet_status = 0;
7687 /* Initialize spinlocks */
7688 spin_lock_init(&sp->tx_lock);
7691 spin_lock_init(&sp->put_lock);
7692 spin_lock_init(&sp->rx_lock);
7695 * SXE-002: Configure link and activity LED to init state
7698 subid = sp->pdev->subsystem_device;
7699 if ((subid & 0xFF) >= 0x07) {
7700 val64 = readq(&bar0->gpio_control);
7701 val64 |= 0x0000800000000000ULL;
7702 writeq(val64, &bar0->gpio_control);
7703 val64 = 0x0411040400000000ULL;
7704 writeq(val64, (void __iomem *) bar0 + 0x2700);
7705 val64 = readq(&bar0->gpio_control);
7708 sp->rx_csum = 1; /* Rx chksum verify enabled by default */
7710 if (register_netdev(dev)) {
7711 DBG_PRINT(ERR_DBG, "Device registration failed\n");
7713 goto register_failed;
7716 DBG_PRINT(ERR_DBG, "Copyright(c) 2002-2007 Neterion Inc.\n");
7717 DBG_PRINT(ERR_DBG, "%s: Neterion %s (rev %d)\n",dev->name,
7718 sp->product_name, pdev->revision);
7719 DBG_PRINT(ERR_DBG, "%s: Driver version %s\n", dev->name,
7720 s2io_driver_version);
7721 DBG_PRINT(ERR_DBG, "%s: MAC ADDR: %s\n",
7722 dev->name, print_mac(mac, dev->dev_addr));
7723 DBG_PRINT(ERR_DBG, "SERIAL NUMBER: %s\n", sp->serial_num);
7724 if (sp->device_type & XFRAME_II_DEVICE) {
7725 mode = s2io_print_pci_mode(sp);
7727 DBG_PRINT(ERR_DBG, " Unsupported PCI bus mode\n");
7729 unregister_netdev(dev);
7730 goto set_swap_failed;
7733 switch(sp->rxd_mode) {
7735 DBG_PRINT(ERR_DBG, "%s: 1-Buffer receive mode enabled\n",
7739 DBG_PRINT(ERR_DBG, "%s: 2-Buffer receive mode enabled\n",
7745 DBG_PRINT(ERR_DBG, "%s: NAPI enabled\n", dev->name);
7746 switch(sp->config.intr_type) {
7748 DBG_PRINT(ERR_DBG, "%s: Interrupt type INTA\n", dev->name);
7751 DBG_PRINT(ERR_DBG, "%s: Interrupt type MSI-X\n", dev->name);
7755 DBG_PRINT(ERR_DBG, "%s: Large receive offload enabled\n",
7758 DBG_PRINT(ERR_DBG, "%s: UDP Fragmentation Offload(UFO)"
7759 " enabled\n", dev->name);
7760 /* Initialize device name */
7761 sprintf(sp->name, "%s Neterion %s", dev->name, sp->product_name);
7764 * Make Link state as off at this point, when the Link change
7765 * interrupt comes the state will be automatically changed to
7768 netif_carrier_off(dev);
7779 free_shared_mem(sp);
7780 pci_disable_device(pdev);
7781 pci_release_regions(pdev);
7782 pci_set_drvdata(pdev, NULL);
7789 * s2io_rem_nic - Free the PCI device
7790 * @pdev: structure containing the PCI related information of the device.
7791 * Description: This function is called by the Pci subsystem to release a
7792 * PCI device and free up all resource held up by the device. This could
7793 * be in response to a Hot plug event or when the driver is to be removed
7797 static void __devexit s2io_rem_nic(struct pci_dev *pdev)
7799 struct net_device *dev =
7800 (struct net_device *) pci_get_drvdata(pdev);
7801 struct s2io_nic *sp;
7804 DBG_PRINT(ERR_DBG, "Driver Data is NULL!!\n");
7808 flush_scheduled_work();
7811 unregister_netdev(dev);
7813 free_shared_mem(sp);
7816 pci_release_regions(pdev);
7817 pci_set_drvdata(pdev, NULL);
7819 pci_disable_device(pdev);
7823 * s2io_starter - Entry point for the driver
7824 * Description: This function is the entry point for the driver. It verifies
7825 * the module loadable parameters and initializes PCI configuration space.
7828 static int __init s2io_starter(void)
7830 return pci_register_driver(&s2io_driver);
7834 * s2io_closer - Cleanup routine for the driver
7835 * Description: This function is the cleanup routine for the driver. It unregist * ers the driver.
7838 static __exit void s2io_closer(void)
7840 pci_unregister_driver(&s2io_driver);
7841 DBG_PRINT(INIT_DBG, "cleanup done\n");
7844 module_init(s2io_starter);
7845 module_exit(s2io_closer);
7847 static int check_L2_lro_capable(u8 *buffer, struct iphdr **ip,
7848 struct tcphdr **tcp, struct RxD_t *rxdp)
7851 u8 l2_type = (u8)((rxdp->Control_1 >> 37) & 0x7), ip_len;
7853 if (!(rxdp->Control_1 & RXD_FRAME_PROTO_TCP)) {
7854 DBG_PRINT(INIT_DBG,"%s: Non-TCP frames not supported for LRO\n",
7860 * By default the VLAN field in the MAC is stripped by the card, if this
7861 * feature is turned off in rx_pa_cfg register, then the ip_off field
7862 * has to be shifted by a further 2 bytes
7865 case 0: /* DIX type */
7866 case 4: /* DIX type with VLAN */
7867 ip_off = HEADER_ETHERNET_II_802_3_SIZE;
7869 /* LLC, SNAP etc are considered non-mergeable */
7874 *ip = (struct iphdr *)((u8 *)buffer + ip_off);
7875 ip_len = (u8)((*ip)->ihl);
7877 *tcp = (struct tcphdr *)((unsigned long)*ip + ip_len);
7882 static int check_for_socket_match(struct lro *lro, struct iphdr *ip,
7885 DBG_PRINT(INFO_DBG,"%s: Been here...\n", __FUNCTION__);
7886 if ((lro->iph->saddr != ip->saddr) || (lro->iph->daddr != ip->daddr) ||
7887 (lro->tcph->source != tcp->source) || (lro->tcph->dest != tcp->dest))
7892 static inline int get_l4_pyld_length(struct iphdr *ip, struct tcphdr *tcp)
7894 return(ntohs(ip->tot_len) - (ip->ihl << 2) - (tcp->doff << 2));
7897 static void initiate_new_session(struct lro *lro, u8 *l2h,
7898 struct iphdr *ip, struct tcphdr *tcp, u32 tcp_pyld_len)
7900 DBG_PRINT(INFO_DBG,"%s: Been here...\n", __FUNCTION__);
7904 lro->tcp_next_seq = tcp_pyld_len + ntohl(tcp->seq);
7905 lro->tcp_ack = ntohl(tcp->ack_seq);
7907 lro->total_len = ntohs(ip->tot_len);
7910 * check if we saw TCP timestamp. Other consistency checks have
7911 * already been done.
7913 if (tcp->doff == 8) {
7915 ptr = (u32 *)(tcp+1);
7917 lro->cur_tsval = *(ptr+1);
7918 lro->cur_tsecr = *(ptr+2);
7923 static void update_L3L4_header(struct s2io_nic *sp, struct lro *lro)
7925 struct iphdr *ip = lro->iph;
7926 struct tcphdr *tcp = lro->tcph;
7928 struct stat_block *statinfo = sp->mac_control.stats_info;
7929 DBG_PRINT(INFO_DBG,"%s: Been here...\n", __FUNCTION__);
7931 /* Update L3 header */
7932 ip->tot_len = htons(lro->total_len);
7934 nchk = ip_fast_csum((u8 *)lro->iph, ip->ihl);
7937 /* Update L4 header */
7938 tcp->ack_seq = lro->tcp_ack;
7939 tcp->window = lro->window;
7941 /* Update tsecr field if this session has timestamps enabled */
7943 u32 *ptr = (u32 *)(tcp + 1);
7944 *(ptr+2) = lro->cur_tsecr;
7947 /* Update counters required for calculation of
7948 * average no. of packets aggregated.
7950 statinfo->sw_stat.sum_avg_pkts_aggregated += lro->sg_num;
7951 statinfo->sw_stat.num_aggregations++;
7954 static void aggregate_new_rx(struct lro *lro, struct iphdr *ip,
7955 struct tcphdr *tcp, u32 l4_pyld)
7957 DBG_PRINT(INFO_DBG,"%s: Been here...\n", __FUNCTION__);
7958 lro->total_len += l4_pyld;
7959 lro->frags_len += l4_pyld;
7960 lro->tcp_next_seq += l4_pyld;
7963 /* Update ack seq no. and window ad(from this pkt) in LRO object */
7964 lro->tcp_ack = tcp->ack_seq;
7965 lro->window = tcp->window;
7969 /* Update tsecr and tsval from this packet */
7970 ptr = (u32 *) (tcp + 1);
7971 lro->cur_tsval = *(ptr + 1);
7972 lro->cur_tsecr = *(ptr + 2);
7976 static int verify_l3_l4_lro_capable(struct lro *l_lro, struct iphdr *ip,
7977 struct tcphdr *tcp, u32 tcp_pyld_len)
7981 DBG_PRINT(INFO_DBG,"%s: Been here...\n", __FUNCTION__);
7983 if (!tcp_pyld_len) {
7984 /* Runt frame or a pure ack */
7988 if (ip->ihl != 5) /* IP has options */
7991 /* If we see CE codepoint in IP header, packet is not mergeable */
7992 if (INET_ECN_is_ce(ipv4_get_dsfield(ip)))
7995 /* If we see ECE or CWR flags in TCP header, packet is not mergeable */
7996 if (tcp->urg || tcp->psh || tcp->rst || tcp->syn || tcp->fin ||
7997 tcp->ece || tcp->cwr || !tcp->ack) {
7999 * Currently recognize only the ack control word and
8000 * any other control field being set would result in
8001 * flushing the LRO session
8007 * Allow only one TCP timestamp option. Don't aggregate if
8008 * any other options are detected.
8010 if (tcp->doff != 5 && tcp->doff != 8)
8013 if (tcp->doff == 8) {
8014 ptr = (u8 *)(tcp + 1);
8015 while (*ptr == TCPOPT_NOP)
8017 if (*ptr != TCPOPT_TIMESTAMP || *(ptr+1) != TCPOLEN_TIMESTAMP)
8020 /* Ensure timestamp value increases monotonically */
8022 if (l_lro->cur_tsval > *((u32 *)(ptr+2)))
8025 /* timestamp echo reply should be non-zero */
8026 if (*((u32 *)(ptr+6)) == 0)
8034 s2io_club_tcp_session(u8 *buffer, u8 **tcp, u32 *tcp_len, struct lro **lro,
8035 struct RxD_t *rxdp, struct s2io_nic *sp)
8038 struct tcphdr *tcph;
8041 if (!(ret = check_L2_lro_capable(buffer, &ip, (struct tcphdr **)tcp,
8043 DBG_PRINT(INFO_DBG,"IP Saddr: %x Daddr: %x\n",
8044 ip->saddr, ip->daddr);
8049 tcph = (struct tcphdr *)*tcp;
8050 *tcp_len = get_l4_pyld_length(ip, tcph);
8051 for (i=0; i<MAX_LRO_SESSIONS; i++) {
8052 struct lro *l_lro = &sp->lro0_n[i];
8053 if (l_lro->in_use) {
8054 if (check_for_socket_match(l_lro, ip, tcph))
8056 /* Sock pair matched */
8059 if ((*lro)->tcp_next_seq != ntohl(tcph->seq)) {
8060 DBG_PRINT(INFO_DBG, "%s:Out of order. expected "
8061 "0x%x, actual 0x%x\n", __FUNCTION__,
8062 (*lro)->tcp_next_seq,
8065 sp->mac_control.stats_info->
8066 sw_stat.outof_sequence_pkts++;
8071 if (!verify_l3_l4_lro_capable(l_lro, ip, tcph,*tcp_len))
8072 ret = 1; /* Aggregate */
8074 ret = 2; /* Flush both */
8080 /* Before searching for available LRO objects,
8081 * check if the pkt is L3/L4 aggregatable. If not
8082 * don't create new LRO session. Just send this
8085 if (verify_l3_l4_lro_capable(NULL, ip, tcph, *tcp_len)) {
8089 for (i=0; i<MAX_LRO_SESSIONS; i++) {
8090 struct lro *l_lro = &sp->lro0_n[i];
8091 if (!(l_lro->in_use)) {
8093 ret = 3; /* Begin anew */
8099 if (ret == 0) { /* sessions exceeded */
8100 DBG_PRINT(INFO_DBG,"%s:All LRO sessions already in use\n",
8108 initiate_new_session(*lro, buffer, ip, tcph, *tcp_len);
8111 update_L3L4_header(sp, *lro);
8114 aggregate_new_rx(*lro, ip, tcph, *tcp_len);
8115 if ((*lro)->sg_num == sp->lro_max_aggr_per_sess) {
8116 update_L3L4_header(sp, *lro);
8117 ret = 4; /* Flush the LRO */
8121 DBG_PRINT(ERR_DBG,"%s:Dont know, can't say!!\n",
8129 static void clear_lro_session(struct lro *lro)
8131 static u16 lro_struct_size = sizeof(struct lro);
8133 memset(lro, 0, lro_struct_size);
8136 static void queue_rx_frame(struct sk_buff *skb)
8138 struct net_device *dev = skb->dev;
8140 skb->protocol = eth_type_trans(skb, dev);
8142 netif_receive_skb(skb);
8147 static void lro_append_pkt(struct s2io_nic *sp, struct lro *lro,
8148 struct sk_buff *skb,
8151 struct sk_buff *first = lro->parent;
8153 first->len += tcp_len;
8154 first->data_len = lro->frags_len;
8155 skb_pull(skb, (skb->len - tcp_len));
8156 if (skb_shinfo(first)->frag_list)
8157 lro->last_frag->next = skb;
8159 skb_shinfo(first)->frag_list = skb;
8160 first->truesize += skb->truesize;
8161 lro->last_frag = skb;
8162 sp->mac_control.stats_info->sw_stat.clubbed_frms_cnt++;
8167 * s2io_io_error_detected - called when PCI error is detected
8168 * @pdev: Pointer to PCI device
8169 * @state: The current pci connection state
8171 * This function is called after a PCI bus error affecting
8172 * this device has been detected.
8174 static pci_ers_result_t s2io_io_error_detected(struct pci_dev *pdev,
8175 pci_channel_state_t state)
8177 struct net_device *netdev = pci_get_drvdata(pdev);
8178 struct s2io_nic *sp = netdev->priv;
8180 netif_device_detach(netdev);
8182 if (netif_running(netdev)) {
8183 /* Bring down the card, while avoiding PCI I/O */
8184 do_s2io_card_down(sp, 0);
8186 pci_disable_device(pdev);
8188 return PCI_ERS_RESULT_NEED_RESET;
8192 * s2io_io_slot_reset - called after the pci bus has been reset.
8193 * @pdev: Pointer to PCI device
8195 * Restart the card from scratch, as if from a cold-boot.
8196 * At this point, the card has exprienced a hard reset,
8197 * followed by fixups by BIOS, and has its config space
8198 * set up identically to what it was at cold boot.
8200 static pci_ers_result_t s2io_io_slot_reset(struct pci_dev *pdev)
8202 struct net_device *netdev = pci_get_drvdata(pdev);
8203 struct s2io_nic *sp = netdev->priv;
8205 if (pci_enable_device(pdev)) {
8206 printk(KERN_ERR "s2io: "
8207 "Cannot re-enable PCI device after reset.\n");
8208 return PCI_ERS_RESULT_DISCONNECT;
8211 pci_set_master(pdev);
8214 return PCI_ERS_RESULT_RECOVERED;
8218 * s2io_io_resume - called when traffic can start flowing again.
8219 * @pdev: Pointer to PCI device
8221 * This callback is called when the error recovery driver tells
8222 * us that its OK to resume normal operation.
8224 static void s2io_io_resume(struct pci_dev *pdev)
8226 struct net_device *netdev = pci_get_drvdata(pdev);
8227 struct s2io_nic *sp = netdev->priv;
8229 if (netif_running(netdev)) {
8230 if (s2io_card_up(sp)) {
8231 printk(KERN_ERR "s2io: "
8232 "Can't bring device back up after reset.\n");
8236 if (s2io_set_mac_addr(netdev, netdev->dev_addr) == FAILURE) {
8238 printk(KERN_ERR "s2io: "
8239 "Can't resetore mac addr after reset.\n");
8244 netif_device_attach(netdev);
8245 netif_wake_queue(netdev);
projects / linux-2.6 / blob