2 * Copyright (C) 2005 - 2009 ServerEngines
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
10 * Contact Information:
11 * linux-drivers@serverengines.com
14 * 209 N. Fair Oaks Ave
20 #include <asm/div64.h>
22 MODULE_VERSION(DRV_VER);
23 MODULE_DEVICE_TABLE(pci, be_dev_ids);
24 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
25 MODULE_AUTHOR("ServerEngines Corporation");
26 MODULE_LICENSE("GPL");
28 static unsigned int rx_frag_size = 2048;
29 module_param(rx_frag_size, uint, S_IRUGO);
30 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
32 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
33 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
34 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID2) },
35 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
36 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
37 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID3) },
40 MODULE_DEVICE_TABLE(pci, be_dev_ids);
42 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
44 struct be_dma_mem *mem = &q->dma_mem;
46 pci_free_consistent(adapter->pdev, mem->size,
50 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
51 u16 len, u16 entry_size)
53 struct be_dma_mem *mem = &q->dma_mem;
55 memset(q, 0, sizeof(*q));
57 q->entry_size = entry_size;
58 mem->size = len * entry_size;
59 mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
62 memset(mem->va, 0, mem->size);
66 static void be_intr_set(struct be_adapter *adapter, bool enable)
68 u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
69 u32 reg = ioread32(addr);
70 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
72 if (!enabled && enable)
73 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
74 else if (enabled && !enable)
75 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
82 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
85 val |= qid & DB_RQ_RING_ID_MASK;
86 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
87 iowrite32(val, adapter->db + DB_RQ_OFFSET);
90 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
93 val |= qid & DB_TXULP_RING_ID_MASK;
94 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
95 iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
98 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
99 bool arm, bool clear_int, u16 num_popped)
102 val |= qid & DB_EQ_RING_ID_MASK;
104 val |= 1 << DB_EQ_REARM_SHIFT;
106 val |= 1 << DB_EQ_CLR_SHIFT;
107 val |= 1 << DB_EQ_EVNT_SHIFT;
108 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
109 iowrite32(val, adapter->db + DB_EQ_OFFSET);
112 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
115 val |= qid & DB_CQ_RING_ID_MASK;
117 val |= 1 << DB_CQ_REARM_SHIFT;
118 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
119 iowrite32(val, adapter->db + DB_CQ_OFFSET);
122 static int be_mac_addr_set(struct net_device *netdev, void *p)
124 struct be_adapter *adapter = netdev_priv(netdev);
125 struct sockaddr *addr = p;
128 if (!is_valid_ether_addr(addr->sa_data))
129 return -EADDRNOTAVAIL;
131 status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
135 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
136 adapter->if_handle, &adapter->pmac_id);
138 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
143 void netdev_stats_update(struct be_adapter *adapter)
145 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
146 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
147 struct be_port_rxf_stats *port_stats =
148 &rxf_stats->port[adapter->port_num];
149 struct net_device_stats *dev_stats = &adapter->netdev->stats;
150 struct be_erx_stats *erx_stats = &hw_stats->erx;
152 dev_stats->rx_packets = port_stats->rx_total_frames;
153 dev_stats->tx_packets = port_stats->tx_unicastframes +
154 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
155 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
156 (u64) port_stats->rx_bytes_lsd;
157 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
158 (u64) port_stats->tx_bytes_lsd;
160 /* bad pkts received */
161 dev_stats->rx_errors = port_stats->rx_crc_errors +
162 port_stats->rx_alignment_symbol_errors +
163 port_stats->rx_in_range_errors +
164 port_stats->rx_out_range_errors +
165 port_stats->rx_frame_too_long +
166 port_stats->rx_dropped_too_small +
167 port_stats->rx_dropped_too_short +
168 port_stats->rx_dropped_header_too_small +
169 port_stats->rx_dropped_tcp_length +
170 port_stats->rx_dropped_runt +
171 port_stats->rx_tcp_checksum_errs +
172 port_stats->rx_ip_checksum_errs +
173 port_stats->rx_udp_checksum_errs;
175 /* no space in linux buffers: best possible approximation */
176 dev_stats->rx_dropped =
177 erx_stats->rx_drops_no_fragments[adapter->rx_obj.q.id];
179 /* detailed rx errors */
180 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
181 port_stats->rx_out_range_errors +
182 port_stats->rx_frame_too_long;
184 /* receive ring buffer overflow */
185 dev_stats->rx_over_errors = 0;
187 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
189 /* frame alignment errors */
190 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
192 /* receiver fifo overrun */
193 /* drops_no_pbuf is no per i/f, it's per BE card */
194 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
195 port_stats->rx_input_fifo_overflow +
196 rxf_stats->rx_drops_no_pbuf;
197 /* receiver missed packetd */
198 dev_stats->rx_missed_errors = 0;
200 /* packet transmit problems */
201 dev_stats->tx_errors = 0;
203 /* no space available in linux */
204 dev_stats->tx_dropped = 0;
206 dev_stats->multicast = port_stats->rx_multicast_frames;
207 dev_stats->collisions = 0;
209 /* detailed tx_errors */
210 dev_stats->tx_aborted_errors = 0;
211 dev_stats->tx_carrier_errors = 0;
212 dev_stats->tx_fifo_errors = 0;
213 dev_stats->tx_heartbeat_errors = 0;
214 dev_stats->tx_window_errors = 0;
217 void be_link_status_update(struct be_adapter *adapter, bool link_up)
219 struct net_device *netdev = adapter->netdev;
221 /* If link came up or went down */
222 if (adapter->link_up != link_up) {
223 adapter->link_speed = -1;
225 netif_start_queue(netdev);
226 netif_carrier_on(netdev);
227 printk(KERN_INFO "%s: Link up\n", netdev->name);
229 netif_stop_queue(netdev);
230 netif_carrier_off(netdev);
231 printk(KERN_INFO "%s: Link down\n", netdev->name);
233 adapter->link_up = link_up;
237 /* Update the EQ delay n BE based on the RX frags consumed / sec */
238 static void be_rx_eqd_update(struct be_adapter *adapter)
240 struct be_eq_obj *rx_eq = &adapter->rx_eq;
241 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
245 if (!rx_eq->enable_aic)
249 if (time_before(now, stats->rx_fps_jiffies)) {
250 stats->rx_fps_jiffies = now;
254 /* Update once a second */
255 if ((now - stats->rx_fps_jiffies) < HZ)
258 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
259 ((now - stats->rx_fps_jiffies) / HZ);
261 stats->rx_fps_jiffies = now;
262 stats->be_prev_rx_frags = stats->be_rx_frags;
263 eqd = stats->be_rx_fps / 110000;
265 if (eqd > rx_eq->max_eqd)
266 eqd = rx_eq->max_eqd;
267 if (eqd < rx_eq->min_eqd)
268 eqd = rx_eq->min_eqd;
271 if (eqd != rx_eq->cur_eqd)
272 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
274 rx_eq->cur_eqd = eqd;
277 static struct net_device_stats *be_get_stats(struct net_device *dev)
282 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
286 do_div(rate, ticks / HZ);
287 rate <<= 3; /* bytes/sec -> bits/sec */
288 do_div(rate, 1000000ul); /* MB/Sec */
293 static void be_tx_rate_update(struct be_adapter *adapter)
295 struct be_drvr_stats *stats = drvr_stats(adapter);
298 /* Wrapped around? */
299 if (time_before(now, stats->be_tx_jiffies)) {
300 stats->be_tx_jiffies = now;
304 /* Update tx rate once in two seconds */
305 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
306 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
307 - stats->be_tx_bytes_prev,
308 now - stats->be_tx_jiffies);
309 stats->be_tx_jiffies = now;
310 stats->be_tx_bytes_prev = stats->be_tx_bytes;
314 static void be_tx_stats_update(struct be_adapter *adapter,
315 u32 wrb_cnt, u32 copied, bool stopped)
317 struct be_drvr_stats *stats = drvr_stats(adapter);
319 stats->be_tx_wrbs += wrb_cnt;
320 stats->be_tx_bytes += copied;
322 stats->be_tx_stops++;
325 /* Determine number of WRB entries needed to xmit data in an skb */
326 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
328 int cnt = (skb->len > skb->data_len);
330 cnt += skb_shinfo(skb)->nr_frags;
332 /* to account for hdr wrb */
335 /* add a dummy to make it an even num */
340 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
344 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
346 wrb->frag_pa_hi = upper_32_bits(addr);
347 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
348 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
351 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
352 bool vlan, u32 wrb_cnt, u32 len)
354 memset(hdr, 0, sizeof(*hdr));
356 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
358 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
359 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
360 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
361 hdr, skb_shinfo(skb)->gso_size);
362 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
364 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
365 else if (is_udp_pkt(skb))
366 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
369 if (vlan && vlan_tx_tag_present(skb)) {
370 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
371 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
372 hdr, vlan_tx_tag_get(skb));
375 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
376 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
377 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
378 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
382 static int make_tx_wrbs(struct be_adapter *adapter,
383 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
387 struct pci_dev *pdev = adapter->pdev;
388 struct sk_buff *first_skb = skb;
389 struct be_queue_info *txq = &adapter->tx_obj.q;
390 struct be_eth_wrb *wrb;
391 struct be_eth_hdr_wrb *hdr;
393 hdr = queue_head_node(txq);
394 atomic_add(wrb_cnt, &txq->used);
397 if (skb_dma_map(&pdev->dev, skb, DMA_TO_DEVICE)) {
398 dev_err(&pdev->dev, "TX DMA mapping failed\n");
402 if (skb->len > skb->data_len) {
403 int len = skb->len - skb->data_len;
404 wrb = queue_head_node(txq);
405 busaddr = skb_shinfo(skb)->dma_head;
406 wrb_fill(wrb, busaddr, len);
407 be_dws_cpu_to_le(wrb, sizeof(*wrb));
412 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
413 struct skb_frag_struct *frag =
414 &skb_shinfo(skb)->frags[i];
416 busaddr = skb_shinfo(skb)->dma_maps[i];
417 wrb = queue_head_node(txq);
418 wrb_fill(wrb, busaddr, frag->size);
419 be_dws_cpu_to_le(wrb, sizeof(*wrb));
421 copied += frag->size;
425 wrb = queue_head_node(txq);
427 be_dws_cpu_to_le(wrb, sizeof(*wrb));
431 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
433 be_dws_cpu_to_le(hdr, sizeof(*hdr));
438 static netdev_tx_t be_xmit(struct sk_buff *skb,
439 struct net_device *netdev)
441 struct be_adapter *adapter = netdev_priv(netdev);
442 struct be_tx_obj *tx_obj = &adapter->tx_obj;
443 struct be_queue_info *txq = &tx_obj->q;
444 u32 wrb_cnt = 0, copied = 0;
445 u32 start = txq->head;
446 bool dummy_wrb, stopped = false;
448 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
450 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
452 /* record the sent skb in the sent_skb table */
453 BUG_ON(tx_obj->sent_skb_list[start]);
454 tx_obj->sent_skb_list[start] = skb;
456 /* Ensure txq has space for the next skb; Else stop the queue
457 * *BEFORE* ringing the tx doorbell, so that we serialze the
458 * tx compls of the current transmit which'll wake up the queue
460 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
462 netif_stop_queue(netdev);
466 be_txq_notify(adapter, txq->id, wrb_cnt);
468 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
471 dev_kfree_skb_any(skb);
476 static int be_change_mtu(struct net_device *netdev, int new_mtu)
478 struct be_adapter *adapter = netdev_priv(netdev);
479 if (new_mtu < BE_MIN_MTU ||
480 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
481 dev_info(&adapter->pdev->dev,
482 "MTU must be between %d and %d bytes\n",
483 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
486 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
487 netdev->mtu, new_mtu);
488 netdev->mtu = new_mtu;
493 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
494 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
495 * set the BE in promiscuous VLAN mode.
497 static int be_vid_config(struct be_adapter *adapter)
499 u16 vtag[BE_NUM_VLANS_SUPPORTED];
503 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
504 /* Construct VLAN Table to give to HW */
505 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
506 if (adapter->vlan_tag[i]) {
507 vtag[ntags] = cpu_to_le16(i);
511 status = be_cmd_vlan_config(adapter, adapter->if_handle,
514 status = be_cmd_vlan_config(adapter, adapter->if_handle,
520 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
522 struct be_adapter *adapter = netdev_priv(netdev);
523 struct be_eq_obj *rx_eq = &adapter->rx_eq;
524 struct be_eq_obj *tx_eq = &adapter->tx_eq;
526 be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
527 be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
528 adapter->vlan_grp = grp;
529 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
530 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
533 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
535 struct be_adapter *adapter = netdev_priv(netdev);
537 adapter->num_vlans++;
538 adapter->vlan_tag[vid] = 1;
540 be_vid_config(adapter);
543 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
545 struct be_adapter *adapter = netdev_priv(netdev);
547 adapter->num_vlans--;
548 adapter->vlan_tag[vid] = 0;
550 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
551 be_vid_config(adapter);
554 static void be_set_multicast_list(struct net_device *netdev)
556 struct be_adapter *adapter = netdev_priv(netdev);
558 if (netdev->flags & IFF_PROMISC) {
559 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
560 adapter->promiscuous = true;
564 /* BE was previously in promiscous mode; disable it */
565 if (adapter->promiscuous) {
566 adapter->promiscuous = false;
567 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
570 /* Enable multicast promisc if num configured exceeds what we support */
571 if (netdev->flags & IFF_ALLMULTI || netdev->mc_count > BE_MAX_MC) {
572 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0,
573 &adapter->mc_cmd_mem);
577 be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
578 netdev->mc_count, &adapter->mc_cmd_mem);
583 static void be_rx_rate_update(struct be_adapter *adapter)
585 struct be_drvr_stats *stats = drvr_stats(adapter);
589 if (time_before(now, stats->be_rx_jiffies)) {
590 stats->be_rx_jiffies = now;
594 /* Update the rate once in two seconds */
595 if ((now - stats->be_rx_jiffies) < 2 * HZ)
598 stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
599 - stats->be_rx_bytes_prev,
600 now - stats->be_rx_jiffies);
601 stats->be_rx_jiffies = now;
602 stats->be_rx_bytes_prev = stats->be_rx_bytes;
605 static void be_rx_stats_update(struct be_adapter *adapter,
606 u32 pktsize, u16 numfrags)
608 struct be_drvr_stats *stats = drvr_stats(adapter);
610 stats->be_rx_compl++;
611 stats->be_rx_frags += numfrags;
612 stats->be_rx_bytes += pktsize;
615 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
617 u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
619 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
620 ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
621 ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
623 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
624 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
626 ipv6_chk = (ip_version && (tcpf || udpf));
628 return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
631 static struct be_rx_page_info *
632 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
634 struct be_rx_page_info *rx_page_info;
635 struct be_queue_info *rxq = &adapter->rx_obj.q;
637 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
638 BUG_ON(!rx_page_info->page);
640 if (rx_page_info->last_page_user)
641 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
642 adapter->big_page_size, PCI_DMA_FROMDEVICE);
644 atomic_dec(&rxq->used);
648 /* Throwaway the data in the Rx completion */
649 static void be_rx_compl_discard(struct be_adapter *adapter,
650 struct be_eth_rx_compl *rxcp)
652 struct be_queue_info *rxq = &adapter->rx_obj.q;
653 struct be_rx_page_info *page_info;
654 u16 rxq_idx, i, num_rcvd;
656 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
657 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
659 for (i = 0; i < num_rcvd; i++) {
660 page_info = get_rx_page_info(adapter, rxq_idx);
661 put_page(page_info->page);
662 memset(page_info, 0, sizeof(*page_info));
663 index_inc(&rxq_idx, rxq->len);
668 * skb_fill_rx_data forms a complete skb for an ether frame
671 static void skb_fill_rx_data(struct be_adapter *adapter,
672 struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
674 struct be_queue_info *rxq = &adapter->rx_obj.q;
675 struct be_rx_page_info *page_info;
676 u16 rxq_idx, i, num_rcvd, j;
677 u32 pktsize, hdr_len, curr_frag_len, size;
680 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
681 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
682 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
684 page_info = get_rx_page_info(adapter, rxq_idx);
686 start = page_address(page_info->page) + page_info->page_offset;
689 /* Copy data in the first descriptor of this completion */
690 curr_frag_len = min(pktsize, rx_frag_size);
692 /* Copy the header portion into skb_data */
693 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
694 memcpy(skb->data, start, hdr_len);
695 skb->len = curr_frag_len;
696 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
697 /* Complete packet has now been moved to data */
698 put_page(page_info->page);
700 skb->tail += curr_frag_len;
702 skb_shinfo(skb)->nr_frags = 1;
703 skb_shinfo(skb)->frags[0].page = page_info->page;
704 skb_shinfo(skb)->frags[0].page_offset =
705 page_info->page_offset + hdr_len;
706 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
707 skb->data_len = curr_frag_len - hdr_len;
708 skb->tail += hdr_len;
710 memset(page_info, 0, sizeof(*page_info));
712 if (pktsize <= rx_frag_size) {
713 BUG_ON(num_rcvd != 1);
717 /* More frags present for this completion */
719 for (i = 1, j = 0; i < num_rcvd; i++) {
720 size -= curr_frag_len;
721 index_inc(&rxq_idx, rxq->len);
722 page_info = get_rx_page_info(adapter, rxq_idx);
724 curr_frag_len = min(size, rx_frag_size);
726 /* Coalesce all frags from the same physical page in one slot */
727 if (page_info->page_offset == 0) {
730 skb_shinfo(skb)->frags[j].page = page_info->page;
731 skb_shinfo(skb)->frags[j].page_offset =
732 page_info->page_offset;
733 skb_shinfo(skb)->frags[j].size = 0;
734 skb_shinfo(skb)->nr_frags++;
736 put_page(page_info->page);
739 skb_shinfo(skb)->frags[j].size += curr_frag_len;
740 skb->len += curr_frag_len;
741 skb->data_len += curr_frag_len;
743 memset(page_info, 0, sizeof(*page_info));
745 BUG_ON(j > MAX_SKB_FRAGS);
748 be_rx_stats_update(adapter, pktsize, num_rcvd);
752 /* Process the RX completion indicated by rxcp when GRO is disabled */
753 static void be_rx_compl_process(struct be_adapter *adapter,
754 struct be_eth_rx_compl *rxcp)
760 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
761 vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
763 /* vlanf could be wrongly set in some cards.
764 * ignore if vtm is not set */
765 if ((adapter->cap == 0x400) && !vtm)
768 skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
771 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
772 be_rx_compl_discard(adapter, rxcp);
776 skb_fill_rx_data(adapter, skb, rxcp);
778 if (do_pkt_csum(rxcp, adapter->rx_csum))
779 skb->ip_summed = CHECKSUM_NONE;
781 skb->ip_summed = CHECKSUM_UNNECESSARY;
783 skb->truesize = skb->len + sizeof(struct sk_buff);
784 skb->protocol = eth_type_trans(skb, adapter->netdev);
785 skb->dev = adapter->netdev;
788 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
792 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
793 vid = be16_to_cpu(vid);
794 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
796 netif_receive_skb(skb);
802 /* Process the RX completion indicated by rxcp when GRO is enabled */
803 static void be_rx_compl_process_gro(struct be_adapter *adapter,
804 struct be_eth_rx_compl *rxcp)
806 struct be_rx_page_info *page_info;
807 struct sk_buff *skb = NULL;
808 struct be_queue_info *rxq = &adapter->rx_obj.q;
809 struct be_eq_obj *eq_obj = &adapter->rx_eq;
810 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
811 u16 i, rxq_idx = 0, vid, j;
814 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
815 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
816 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
817 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
818 vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
820 /* vlanf could be wrongly set in some cards.
821 * ignore if vtm is not set */
822 if ((adapter->cap == 0x400) && !vtm)
825 skb = napi_get_frags(&eq_obj->napi);
827 be_rx_compl_discard(adapter, rxcp);
831 remaining = pkt_size;
832 for (i = 0, j = -1; i < num_rcvd; i++) {
833 page_info = get_rx_page_info(adapter, rxq_idx);
835 curr_frag_len = min(remaining, rx_frag_size);
837 /* Coalesce all frags from the same physical page in one slot */
838 if (i == 0 || page_info->page_offset == 0) {
839 /* First frag or Fresh page */
841 skb_shinfo(skb)->frags[j].page = page_info->page;
842 skb_shinfo(skb)->frags[j].page_offset =
843 page_info->page_offset;
844 skb_shinfo(skb)->frags[j].size = 0;
846 put_page(page_info->page);
848 skb_shinfo(skb)->frags[j].size += curr_frag_len;
850 remaining -= curr_frag_len;
851 index_inc(&rxq_idx, rxq->len);
852 memset(page_info, 0, sizeof(*page_info));
854 BUG_ON(j > MAX_SKB_FRAGS);
856 skb_shinfo(skb)->nr_frags = j + 1;
858 skb->data_len = pkt_size;
859 skb->truesize += pkt_size;
860 skb->ip_summed = CHECKSUM_UNNECESSARY;
862 if (likely(!vlanf)) {
863 napi_gro_frags(&eq_obj->napi);
865 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
866 vid = be16_to_cpu(vid);
868 if (!adapter->vlan_grp || adapter->num_vlans == 0)
871 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
874 be_rx_stats_update(adapter, pkt_size, num_rcvd);
878 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
880 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
882 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
885 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
887 queue_tail_inc(&adapter->rx_obj.cq);
891 /* To reset the valid bit, we need to reset the whole word as
892 * when walking the queue the valid entries are little-endian
893 * and invalid entries are host endian
895 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
897 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
900 static inline struct page *be_alloc_pages(u32 size)
902 gfp_t alloc_flags = GFP_ATOMIC;
903 u32 order = get_order(size);
905 alloc_flags |= __GFP_COMP;
906 return alloc_pages(alloc_flags, order);
910 * Allocate a page, split it to fragments of size rx_frag_size and post as
911 * receive buffers to BE
913 static void be_post_rx_frags(struct be_adapter *adapter)
915 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
916 struct be_rx_page_info *page_info = NULL;
917 struct be_queue_info *rxq = &adapter->rx_obj.q;
918 struct page *pagep = NULL;
919 struct be_eth_rx_d *rxd;
920 u64 page_dmaaddr = 0, frag_dmaaddr;
921 u32 posted, page_offset = 0;
923 page_info = &page_info_tbl[rxq->head];
924 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
926 pagep = be_alloc_pages(adapter->big_page_size);
927 if (unlikely(!pagep)) {
928 drvr_stats(adapter)->be_ethrx_post_fail++;
931 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
932 adapter->big_page_size,
934 page_info->page_offset = 0;
937 page_info->page_offset = page_offset + rx_frag_size;
939 page_offset = page_info->page_offset;
940 page_info->page = pagep;
941 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
942 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
944 rxd = queue_head_node(rxq);
945 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
946 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
949 /* Any space left in the current big page for another frag? */
950 if ((page_offset + rx_frag_size + rx_frag_size) >
951 adapter->big_page_size) {
953 page_info->last_page_user = true;
955 page_info = &page_info_tbl[rxq->head];
958 page_info->last_page_user = true;
961 atomic_add(posted, &rxq->used);
962 be_rxq_notify(adapter, rxq->id, posted);
963 } else if (atomic_read(&rxq->used) == 0) {
964 /* Let be_worker replenish when memory is available */
965 adapter->rx_post_starved = true;
971 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
973 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
975 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
978 be_dws_le_to_cpu(txcp, sizeof(*txcp));
980 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
982 queue_tail_inc(tx_cq);
986 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
988 struct be_queue_info *txq = &adapter->tx_obj.q;
989 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
990 struct sk_buff *sent_skb;
991 u16 cur_index, num_wrbs = 0;
993 cur_index = txq->tail;
994 sent_skb = sent_skbs[cur_index];
996 sent_skbs[cur_index] = NULL;
999 cur_index = txq->tail;
1001 queue_tail_inc(txq);
1002 } while (cur_index != last_index);
1004 atomic_sub(num_wrbs, &txq->used);
1005 skb_dma_unmap(&adapter->pdev->dev, sent_skb, DMA_TO_DEVICE);
1006 kfree_skb(sent_skb);
1009 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1011 struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1016 eqe->evt = le32_to_cpu(eqe->evt);
1017 queue_tail_inc(&eq_obj->q);
1021 static int event_handle(struct be_adapter *adapter,
1022 struct be_eq_obj *eq_obj)
1024 struct be_eq_entry *eqe;
1027 while ((eqe = event_get(eq_obj)) != NULL) {
1032 /* Deal with any spurious interrupts that come
1035 be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1037 napi_schedule(&eq_obj->napi);
1042 /* Just read and notify events without processing them.
1043 * Used at the time of destroying event queues */
1044 static void be_eq_clean(struct be_adapter *adapter,
1045 struct be_eq_obj *eq_obj)
1047 struct be_eq_entry *eqe;
1050 while ((eqe = event_get(eq_obj)) != NULL) {
1056 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1059 static void be_rx_q_clean(struct be_adapter *adapter)
1061 struct be_rx_page_info *page_info;
1062 struct be_queue_info *rxq = &adapter->rx_obj.q;
1063 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1064 struct be_eth_rx_compl *rxcp;
1067 /* First cleanup pending rx completions */
1068 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1069 be_rx_compl_discard(adapter, rxcp);
1070 be_rx_compl_reset(rxcp);
1071 be_cq_notify(adapter, rx_cq->id, true, 1);
1074 /* Then free posted rx buffer that were not used */
1075 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1076 for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1077 page_info = get_rx_page_info(adapter, tail);
1078 put_page(page_info->page);
1079 memset(page_info, 0, sizeof(*page_info));
1081 BUG_ON(atomic_read(&rxq->used));
1084 static void be_tx_compl_clean(struct be_adapter *adapter)
1086 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1087 struct be_queue_info *txq = &adapter->tx_obj.q;
1088 struct be_eth_tx_compl *txcp;
1089 u16 end_idx, cmpl = 0, timeo = 0;
1091 /* Wait for a max of 200ms for all the tx-completions to arrive. */
1093 while ((txcp = be_tx_compl_get(tx_cq))) {
1094 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1096 be_tx_compl_process(adapter, end_idx);
1100 be_cq_notify(adapter, tx_cq->id, false, cmpl);
1104 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1110 if (atomic_read(&txq->used))
1111 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1112 atomic_read(&txq->used));
1115 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1117 struct be_queue_info *q;
1119 q = &adapter->mcc_obj.q;
1121 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1122 be_queue_free(adapter, q);
1124 q = &adapter->mcc_obj.cq;
1126 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1127 be_queue_free(adapter, q);
1130 /* Must be called only after TX qs are created as MCC shares TX EQ */
1131 static int be_mcc_queues_create(struct be_adapter *adapter)
1133 struct be_queue_info *q, *cq;
1135 /* Alloc MCC compl queue */
1136 cq = &adapter->mcc_obj.cq;
1137 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1138 sizeof(struct be_mcc_compl)))
1141 /* Ask BE to create MCC compl queue; share TX's eq */
1142 if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1145 /* Alloc MCC queue */
1146 q = &adapter->mcc_obj.q;
1147 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1148 goto mcc_cq_destroy;
1150 /* Ask BE to create MCC queue */
1151 if (be_cmd_mccq_create(adapter, q, cq))
1157 be_queue_free(adapter, q);
1159 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1161 be_queue_free(adapter, cq);
1166 static void be_tx_queues_destroy(struct be_adapter *adapter)
1168 struct be_queue_info *q;
1170 q = &adapter->tx_obj.q;
1172 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1173 be_queue_free(adapter, q);
1175 q = &adapter->tx_obj.cq;
1177 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1178 be_queue_free(adapter, q);
1180 /* Clear any residual events */
1181 be_eq_clean(adapter, &adapter->tx_eq);
1183 q = &adapter->tx_eq.q;
1185 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1186 be_queue_free(adapter, q);
1189 static int be_tx_queues_create(struct be_adapter *adapter)
1191 struct be_queue_info *eq, *q, *cq;
1193 adapter->tx_eq.max_eqd = 0;
1194 adapter->tx_eq.min_eqd = 0;
1195 adapter->tx_eq.cur_eqd = 96;
1196 adapter->tx_eq.enable_aic = false;
1197 /* Alloc Tx Event queue */
1198 eq = &adapter->tx_eq.q;
1199 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1202 /* Ask BE to create Tx Event queue */
1203 if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1205 /* Alloc TX eth compl queue */
1206 cq = &adapter->tx_obj.cq;
1207 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1208 sizeof(struct be_eth_tx_compl)))
1211 /* Ask BE to create Tx eth compl queue */
1212 if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1215 /* Alloc TX eth queue */
1216 q = &adapter->tx_obj.q;
1217 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1220 /* Ask BE to create Tx eth queue */
1221 if (be_cmd_txq_create(adapter, q, cq))
1226 be_queue_free(adapter, q);
1228 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1230 be_queue_free(adapter, cq);
1232 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1234 be_queue_free(adapter, eq);
1238 static void be_rx_queues_destroy(struct be_adapter *adapter)
1240 struct be_queue_info *q;
1242 q = &adapter->rx_obj.q;
1244 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1245 be_rx_q_clean(adapter);
1247 be_queue_free(adapter, q);
1249 q = &adapter->rx_obj.cq;
1251 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1252 be_queue_free(adapter, q);
1254 /* Clear any residual events */
1255 be_eq_clean(adapter, &adapter->rx_eq);
1257 q = &adapter->rx_eq.q;
1259 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1260 be_queue_free(adapter, q);
1263 static int be_rx_queues_create(struct be_adapter *adapter)
1265 struct be_queue_info *eq, *q, *cq;
1268 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1269 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1270 adapter->rx_eq.min_eqd = 0;
1271 adapter->rx_eq.cur_eqd = 0;
1272 adapter->rx_eq.enable_aic = true;
1274 /* Alloc Rx Event queue */
1275 eq = &adapter->rx_eq.q;
1276 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1277 sizeof(struct be_eq_entry));
1281 /* Ask BE to create Rx Event queue */
1282 rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1286 /* Alloc RX eth compl queue */
1287 cq = &adapter->rx_obj.cq;
1288 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1289 sizeof(struct be_eth_rx_compl));
1293 /* Ask BE to create Rx eth compl queue */
1294 rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1298 /* Alloc RX eth queue */
1299 q = &adapter->rx_obj.q;
1300 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1304 /* Ask BE to create Rx eth queue */
1305 rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1306 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1312 be_queue_free(adapter, q);
1314 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1316 be_queue_free(adapter, cq);
1318 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1320 be_queue_free(adapter, eq);
1324 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1325 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1327 return eq_id - 8 * be_pci_func(adapter);
1330 static irqreturn_t be_intx(int irq, void *dev)
1332 struct be_adapter *adapter = dev;
1335 isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1336 be_pci_func(adapter) * CEV_ISR_SIZE);
1340 event_handle(adapter, &adapter->tx_eq);
1341 event_handle(adapter, &adapter->rx_eq);
1346 static irqreturn_t be_msix_rx(int irq, void *dev)
1348 struct be_adapter *adapter = dev;
1350 event_handle(adapter, &adapter->rx_eq);
1355 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1357 struct be_adapter *adapter = dev;
1359 event_handle(adapter, &adapter->tx_eq);
1364 static inline bool do_gro(struct be_adapter *adapter,
1365 struct be_eth_rx_compl *rxcp)
1367 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1368 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1371 drvr_stats(adapter)->be_rxcp_err++;
1373 return (tcp_frame && !err) ? true : false;
1376 int be_poll_rx(struct napi_struct *napi, int budget)
1378 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1379 struct be_adapter *adapter =
1380 container_of(rx_eq, struct be_adapter, rx_eq);
1381 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1382 struct be_eth_rx_compl *rxcp;
1385 adapter->stats.drvr_stats.be_rx_polls++;
1386 for (work_done = 0; work_done < budget; work_done++) {
1387 rxcp = be_rx_compl_get(adapter);
1391 if (do_gro(adapter, rxcp))
1392 be_rx_compl_process_gro(adapter, rxcp);
1394 be_rx_compl_process(adapter, rxcp);
1396 be_rx_compl_reset(rxcp);
1399 /* Refill the queue */
1400 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1401 be_post_rx_frags(adapter);
1404 if (work_done < budget) {
1405 napi_complete(napi);
1406 be_cq_notify(adapter, rx_cq->id, true, work_done);
1408 /* More to be consumed; continue with interrupts disabled */
1409 be_cq_notify(adapter, rx_cq->id, false, work_done);
1414 void be_process_tx(struct be_adapter *adapter)
1416 struct be_queue_info *txq = &adapter->tx_obj.q;
1417 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1418 struct be_eth_tx_compl *txcp;
1422 while ((txcp = be_tx_compl_get(tx_cq))) {
1423 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1425 be_tx_compl_process(adapter, end_idx);
1430 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1432 /* As Tx wrbs have been freed up, wake up netdev queue if
1433 * it was stopped due to lack of tx wrbs.
1435 if (netif_queue_stopped(adapter->netdev) &&
1436 atomic_read(&txq->used) < txq->len / 2) {
1437 netif_wake_queue(adapter->netdev);
1440 drvr_stats(adapter)->be_tx_events++;
1441 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1445 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1446 * For TX/MCC we don't honour budget; consume everything
1448 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1450 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1451 struct be_adapter *adapter =
1452 container_of(tx_eq, struct be_adapter, tx_eq);
1454 napi_complete(napi);
1456 be_process_tx(adapter);
1458 be_process_mcc(adapter);
1463 static void be_worker(struct work_struct *work)
1465 struct be_adapter *adapter =
1466 container_of(work, struct be_adapter, work.work);
1468 be_cmd_get_stats(adapter, &adapter->stats.cmd);
1471 be_rx_eqd_update(adapter);
1473 be_tx_rate_update(adapter);
1474 be_rx_rate_update(adapter);
1476 if (adapter->rx_post_starved) {
1477 adapter->rx_post_starved = false;
1478 be_post_rx_frags(adapter);
1481 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1484 static void be_msix_disable(struct be_adapter *adapter)
1486 if (adapter->msix_enabled) {
1487 pci_disable_msix(adapter->pdev);
1488 adapter->msix_enabled = false;
1492 static void be_msix_enable(struct be_adapter *adapter)
1496 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1497 adapter->msix_entries[i].entry = i;
1499 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1500 BE_NUM_MSIX_VECTORS);
1502 adapter->msix_enabled = true;
1506 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1508 return adapter->msix_entries[
1509 be_evt_bit_get(adapter, eq_id)].vector;
1512 static int be_request_irq(struct be_adapter *adapter,
1513 struct be_eq_obj *eq_obj,
1514 void *handler, char *desc)
1516 struct net_device *netdev = adapter->netdev;
1519 sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1520 vec = be_msix_vec_get(adapter, eq_obj->q.id);
1521 return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1524 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1526 int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1527 free_irq(vec, adapter);
1530 static int be_msix_register(struct be_adapter *adapter)
1534 status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1538 status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1545 be_free_irq(adapter, &adapter->tx_eq);
1547 dev_warn(&adapter->pdev->dev,
1548 "MSIX Request IRQ failed - err %d\n", status);
1549 pci_disable_msix(adapter->pdev);
1550 adapter->msix_enabled = false;
1554 static int be_irq_register(struct be_adapter *adapter)
1556 struct net_device *netdev = adapter->netdev;
1559 if (adapter->msix_enabled) {
1560 status = be_msix_register(adapter);
1566 netdev->irq = adapter->pdev->irq;
1567 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1570 dev_err(&adapter->pdev->dev,
1571 "INTx request IRQ failed - err %d\n", status);
1575 adapter->isr_registered = true;
1579 static void be_irq_unregister(struct be_adapter *adapter)
1581 struct net_device *netdev = adapter->netdev;
1583 if (!adapter->isr_registered)
1587 if (!adapter->msix_enabled) {
1588 free_irq(netdev->irq, adapter);
1593 be_free_irq(adapter, &adapter->tx_eq);
1594 be_free_irq(adapter, &adapter->rx_eq);
1596 adapter->isr_registered = false;
1600 static int be_open(struct net_device *netdev)
1602 struct be_adapter *adapter = netdev_priv(netdev);
1603 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1604 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1610 /* First time posting */
1611 be_post_rx_frags(adapter);
1613 napi_enable(&rx_eq->napi);
1614 napi_enable(&tx_eq->napi);
1616 be_irq_register(adapter);
1618 be_intr_set(adapter, true);
1620 /* The evt queues are created in unarmed state; arm them */
1621 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1622 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1624 /* Rx compl queue may be in unarmed state; rearm it */
1625 be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1627 status = be_cmd_link_status_query(adapter, &link_up, &mac_speed,
1631 be_link_status_update(adapter, link_up);
1633 status = be_vid_config(adapter);
1637 status = be_cmd_set_flow_control(adapter,
1638 adapter->tx_fc, adapter->rx_fc);
1642 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1647 static int be_setup(struct be_adapter *adapter)
1649 struct net_device *netdev = adapter->netdev;
1650 u32 cap_flags, en_flags;
1653 cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1654 BE_IF_FLAGS_MCAST_PROMISCUOUS |
1655 BE_IF_FLAGS_PROMISCUOUS |
1656 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1657 en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1658 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1660 status = be_cmd_if_create(adapter, cap_flags, en_flags,
1661 netdev->dev_addr, false/* pmac_invalid */,
1662 &adapter->if_handle, &adapter->pmac_id);
1666 status = be_tx_queues_create(adapter);
1670 status = be_rx_queues_create(adapter);
1674 status = be_mcc_queues_create(adapter);
1678 adapter->link_speed = -1;
1683 be_rx_queues_destroy(adapter);
1685 be_tx_queues_destroy(adapter);
1687 be_cmd_if_destroy(adapter, adapter->if_handle);
1692 static int be_clear(struct be_adapter *adapter)
1694 be_mcc_queues_destroy(adapter);
1695 be_rx_queues_destroy(adapter);
1696 be_tx_queues_destroy(adapter);
1698 be_cmd_if_destroy(adapter, adapter->if_handle);
1700 /* tell fw we're done with firing cmds */
1701 be_cmd_fw_clean(adapter);
1705 static int be_close(struct net_device *netdev)
1707 struct be_adapter *adapter = netdev_priv(netdev);
1708 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1709 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1712 cancel_delayed_work_sync(&adapter->work);
1714 netif_stop_queue(netdev);
1715 netif_carrier_off(netdev);
1716 adapter->link_up = false;
1718 be_intr_set(adapter, false);
1720 if (adapter->msix_enabled) {
1721 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1722 synchronize_irq(vec);
1723 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1724 synchronize_irq(vec);
1726 synchronize_irq(netdev->irq);
1728 be_irq_unregister(adapter);
1730 napi_disable(&rx_eq->napi);
1731 napi_disable(&tx_eq->napi);
1733 /* Wait for all pending tx completions to arrive so that
1734 * all tx skbs are freed.
1736 be_tx_compl_clean(adapter);
1741 #define FW_FILE_HDR_SIGN "ServerEngines Corp. "
1742 char flash_cookie[2][16] = {"*** SE FLAS",
1743 "H DIRECTORY *** "};
1745 static bool be_flash_redboot(struct be_adapter *adapter,
1751 crc_offset = FLASH_REDBOOT_START + FLASH_REDBOOT_IMAGE_MAX_SIZE - 4
1752 + sizeof(struct flash_file_hdr) - 32*1024;
1754 status = be_cmd_get_flash_crc(adapter, flashed_crc);
1756 dev_err(&adapter->pdev->dev,
1757 "could not get crc from flash, not flashing redboot\n");
1761 /*update redboot only if crc does not match*/
1762 if (!memcmp(flashed_crc, p, 4))
1769 static int be_flash_image(struct be_adapter *adapter,
1770 const struct firmware *fw,
1771 struct be_dma_mem *flash_cmd, u32 flash_type)
1774 u32 flash_op, image_offset = 0, total_bytes, image_size = 0;
1776 const u8 *p = fw->data;
1777 struct be_cmd_write_flashrom *req = flash_cmd->va;
1779 switch (flash_type) {
1780 case FLASHROM_TYPE_ISCSI_ACTIVE:
1781 image_offset = FLASH_iSCSI_PRIMARY_IMAGE_START;
1782 image_size = FLASH_IMAGE_MAX_SIZE;
1784 case FLASHROM_TYPE_ISCSI_BACKUP:
1785 image_offset = FLASH_iSCSI_BACKUP_IMAGE_START;
1786 image_size = FLASH_IMAGE_MAX_SIZE;
1788 case FLASHROM_TYPE_FCOE_FW_ACTIVE:
1789 image_offset = FLASH_FCoE_PRIMARY_IMAGE_START;
1790 image_size = FLASH_IMAGE_MAX_SIZE;
1792 case FLASHROM_TYPE_FCOE_FW_BACKUP:
1793 image_offset = FLASH_FCoE_BACKUP_IMAGE_START;
1794 image_size = FLASH_IMAGE_MAX_SIZE;
1796 case FLASHROM_TYPE_BIOS:
1797 image_offset = FLASH_iSCSI_BIOS_START;
1798 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1800 case FLASHROM_TYPE_FCOE_BIOS:
1801 image_offset = FLASH_FCoE_BIOS_START;
1802 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1804 case FLASHROM_TYPE_PXE_BIOS:
1805 image_offset = FLASH_PXE_BIOS_START;
1806 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1808 case FLASHROM_TYPE_REDBOOT:
1809 if (!be_flash_redboot(adapter, fw->data))
1811 image_offset = FLASH_REDBOOT_ISM_START;
1812 image_size = FLASH_REDBOOT_IMAGE_MAX_SIZE;
1818 p += sizeof(struct flash_file_hdr) + image_offset;
1819 if (p + image_size > fw->data + fw->size)
1822 total_bytes = image_size;
1824 while (total_bytes) {
1825 if (total_bytes > 32*1024)
1826 num_bytes = 32*1024;
1828 num_bytes = total_bytes;
1829 total_bytes -= num_bytes;
1832 flash_op = FLASHROM_OPER_FLASH;
1834 flash_op = FLASHROM_OPER_SAVE;
1835 memcpy(req->params.data_buf, p, num_bytes);
1837 status = be_cmd_write_flashrom(adapter, flash_cmd,
1838 flash_type, flash_op, num_bytes);
1840 dev_err(&adapter->pdev->dev,
1841 "cmd to write to flash rom failed. type/op %d/%d\n",
1842 flash_type, flash_op);
1851 int be_load_fw(struct be_adapter *adapter, u8 *func)
1853 char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1854 const struct firmware *fw;
1855 struct flash_file_hdr *fhdr;
1856 struct flash_section_info *fsec = NULL;
1857 struct be_dma_mem flash_cmd;
1860 bool entry_found = false;
1862 char fw_ver[FW_VER_LEN];
1865 status = be_cmd_get_fw_ver(adapter, fw_ver);
1869 fw_cfg = *(fw_ver + 2);
1872 strcpy(fw_file, func);
1874 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
1879 fhdr = (struct flash_file_hdr *) p;
1880 if (memcmp(fhdr->sign, FW_FILE_HDR_SIGN, strlen(FW_FILE_HDR_SIGN))) {
1881 dev_err(&adapter->pdev->dev,
1882 "Firmware(%s) load error (signature did not match)\n",
1888 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
1890 p += sizeof(struct flash_file_hdr);
1891 while (p < (fw->data + fw->size)) {
1892 fsec = (struct flash_section_info *)p;
1893 if (!memcmp(flash_cookie, fsec->cookie, sizeof(flash_cookie))) {
1902 dev_err(&adapter->pdev->dev,
1903 "Flash cookie not found in firmware image\n");
1907 flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
1908 flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
1910 if (!flash_cmd.va) {
1912 dev_err(&adapter->pdev->dev,
1913 "Memory allocation failure while flashing\n");
1917 for (flash_type = FLASHROM_TYPE_ISCSI_ACTIVE;
1918 flash_type <= FLASHROM_TYPE_FCOE_FW_BACKUP; flash_type++) {
1919 status = be_flash_image(adapter, fw, &flash_cmd,
1925 pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
1928 dev_err(&adapter->pdev->dev, "Firmware load error\n");
1932 dev_info(&adapter->pdev->dev, "Firmware flashed succesfully\n");
1935 release_firmware(fw);
1939 static struct net_device_ops be_netdev_ops = {
1940 .ndo_open = be_open,
1941 .ndo_stop = be_close,
1942 .ndo_start_xmit = be_xmit,
1943 .ndo_get_stats = be_get_stats,
1944 .ndo_set_rx_mode = be_set_multicast_list,
1945 .ndo_set_mac_address = be_mac_addr_set,
1946 .ndo_change_mtu = be_change_mtu,
1947 .ndo_validate_addr = eth_validate_addr,
1948 .ndo_vlan_rx_register = be_vlan_register,
1949 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1950 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1953 static void be_netdev_init(struct net_device *netdev)
1955 struct be_adapter *adapter = netdev_priv(netdev);
1957 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1958 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
1961 netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
1963 netdev->flags |= IFF_MULTICAST;
1965 adapter->rx_csum = true;
1967 /* Default settings for Rx and Tx flow control */
1968 adapter->rx_fc = true;
1969 adapter->tx_fc = true;
1971 netif_set_gso_max_size(netdev, 65535);
1973 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1975 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1977 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1979 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1982 netif_carrier_off(netdev);
1983 netif_stop_queue(netdev);
1986 static void be_unmap_pci_bars(struct be_adapter *adapter)
1989 iounmap(adapter->csr);
1991 iounmap(adapter->db);
1992 if (adapter->pcicfg)
1993 iounmap(adapter->pcicfg);
1996 static int be_map_pci_bars(struct be_adapter *adapter)
2000 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
2001 pci_resource_len(adapter->pdev, 2));
2004 adapter->csr = addr;
2006 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
2012 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
2013 pci_resource_len(adapter->pdev, 1));
2016 adapter->pcicfg = addr;
2020 be_unmap_pci_bars(adapter);
2025 static void be_ctrl_cleanup(struct be_adapter *adapter)
2027 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
2029 be_unmap_pci_bars(adapter);
2032 pci_free_consistent(adapter->pdev, mem->size,
2035 mem = &adapter->mc_cmd_mem;
2037 pci_free_consistent(adapter->pdev, mem->size,
2041 static int be_ctrl_init(struct be_adapter *adapter)
2043 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
2044 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
2045 struct be_dma_mem *mc_cmd_mem = &adapter->mc_cmd_mem;
2048 status = be_map_pci_bars(adapter);
2052 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
2053 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
2054 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
2055 if (!mbox_mem_alloc->va) {
2057 goto unmap_pci_bars;
2060 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
2061 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
2062 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
2063 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
2065 mc_cmd_mem->size = sizeof(struct be_cmd_req_mcast_mac_config);
2066 mc_cmd_mem->va = pci_alloc_consistent(adapter->pdev, mc_cmd_mem->size,
2068 if (mc_cmd_mem->va == NULL) {
2072 memset(mc_cmd_mem->va, 0, mc_cmd_mem->size);
2074 spin_lock_init(&adapter->mbox_lock);
2075 spin_lock_init(&adapter->mcc_lock);
2076 spin_lock_init(&adapter->mcc_cq_lock);
2081 pci_free_consistent(adapter->pdev, mbox_mem_alloc->size,
2082 mbox_mem_alloc->va, mbox_mem_alloc->dma);
2085 be_unmap_pci_bars(adapter);
2091 static void be_stats_cleanup(struct be_adapter *adapter)
2093 struct be_stats_obj *stats = &adapter->stats;
2094 struct be_dma_mem *cmd = &stats->cmd;
2097 pci_free_consistent(adapter->pdev, cmd->size,
2101 static int be_stats_init(struct be_adapter *adapter)
2103 struct be_stats_obj *stats = &adapter->stats;
2104 struct be_dma_mem *cmd = &stats->cmd;
2106 cmd->size = sizeof(struct be_cmd_req_get_stats);
2107 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2108 if (cmd->va == NULL)
2113 static void __devexit be_remove(struct pci_dev *pdev)
2115 struct be_adapter *adapter = pci_get_drvdata(pdev);
2120 unregister_netdev(adapter->netdev);
2124 be_stats_cleanup(adapter);
2126 be_ctrl_cleanup(adapter);
2128 be_msix_disable(adapter);
2130 pci_set_drvdata(pdev, NULL);
2131 pci_release_regions(pdev);
2132 pci_disable_device(pdev);
2134 free_netdev(adapter->netdev);
2137 static int be_get_config(struct be_adapter *adapter)
2142 status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2146 status = be_cmd_query_fw_cfg(adapter,
2147 &adapter->port_num, &adapter->cap);
2151 memset(mac, 0, ETH_ALEN);
2152 status = be_cmd_mac_addr_query(adapter, mac,
2153 MAC_ADDRESS_TYPE_NETWORK, true /*permanent */, 0);
2157 if (!is_valid_ether_addr(mac))
2158 return -EADDRNOTAVAIL;
2160 memcpy(adapter->netdev->dev_addr, mac, ETH_ALEN);
2161 memcpy(adapter->netdev->perm_addr, mac, ETH_ALEN);
2166 static int __devinit be_probe(struct pci_dev *pdev,
2167 const struct pci_device_id *pdev_id)
2170 struct be_adapter *adapter;
2171 struct net_device *netdev;
2173 status = pci_enable_device(pdev);
2177 status = pci_request_regions(pdev, DRV_NAME);
2180 pci_set_master(pdev);
2182 netdev = alloc_etherdev(sizeof(struct be_adapter));
2183 if (netdev == NULL) {
2187 adapter = netdev_priv(netdev);
2188 adapter->pdev = pdev;
2189 pci_set_drvdata(pdev, adapter);
2190 adapter->netdev = netdev;
2191 be_netdev_init(netdev);
2192 SET_NETDEV_DEV(netdev, &pdev->dev);
2194 be_msix_enable(adapter);
2196 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2198 netdev->features |= NETIF_F_HIGHDMA;
2200 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2202 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2207 status = be_ctrl_init(adapter);
2211 /* sync up with fw's ready state */
2212 status = be_cmd_POST(adapter);
2216 /* tell fw we're ready to fire cmds */
2217 status = be_cmd_fw_init(adapter);
2221 status = be_cmd_reset_function(adapter);
2225 status = be_stats_init(adapter);
2229 status = be_get_config(adapter);
2233 INIT_DELAYED_WORK(&adapter->work, be_worker);
2235 status = be_setup(adapter);
2239 status = register_netdev(netdev);
2243 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2249 be_stats_cleanup(adapter);
2251 be_ctrl_cleanup(adapter);
2253 be_msix_disable(adapter);
2254 free_netdev(adapter->netdev);
2255 pci_set_drvdata(pdev, NULL);
2257 pci_release_regions(pdev);
2259 pci_disable_device(pdev);
2261 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2265 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2267 struct be_adapter *adapter = pci_get_drvdata(pdev);
2268 struct net_device *netdev = adapter->netdev;
2270 netif_device_detach(netdev);
2271 if (netif_running(netdev)) {
2276 be_cmd_get_flow_control(adapter, &adapter->tx_fc, &adapter->rx_fc);
2279 pci_save_state(pdev);
2280 pci_disable_device(pdev);
2281 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2285 static int be_resume(struct pci_dev *pdev)
2288 struct be_adapter *adapter = pci_get_drvdata(pdev);
2289 struct net_device *netdev = adapter->netdev;
2291 netif_device_detach(netdev);
2293 status = pci_enable_device(pdev);
2297 pci_set_power_state(pdev, 0);
2298 pci_restore_state(pdev);
2300 /* tell fw we're ready to fire cmds */
2301 status = be_cmd_fw_init(adapter);
2306 if (netif_running(netdev)) {
2311 netif_device_attach(netdev);
2315 static struct pci_driver be_driver = {
2317 .id_table = be_dev_ids,
2319 .remove = be_remove,
2320 .suspend = be_suspend,
2324 static int __init be_init_module(void)
2326 if (rx_frag_size != 8192 && rx_frag_size != 4096
2327 && rx_frag_size != 2048) {
2328 printk(KERN_WARNING DRV_NAME
2329 " : Module param rx_frag_size must be 2048/4096/8192."
2331 rx_frag_size = 2048;
2334 return pci_register_driver(&be_driver);
2336 module_init(be_init_module);
2338 static void __exit be_exit_module(void)
2340 pci_unregister_driver(&be_driver);
2342 module_exit(be_exit_module);