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
19 #include <asm/div64.h>
21 MODULE_VERSION(DRV_VER);
22 MODULE_DEVICE_TABLE(pci, be_dev_ids);
23 MODULE_DESCRIPTION(DRV_DESC " " DRV_VER);
24 MODULE_AUTHOR("ServerEngines Corporation");
25 MODULE_LICENSE("GPL");
27 static unsigned int rx_frag_size = 2048;
28 module_param(rx_frag_size, uint, S_IRUGO);
29 MODULE_PARM_DESC(rx_frag_size, "Size of a fragment that holds rcvd data.");
31 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids) = {
32 { PCI_DEVICE(BE_VENDOR_ID, BE_DEVICE_ID1) },
33 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID1) },
34 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
37 MODULE_DEVICE_TABLE(pci, be_dev_ids);
39 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
41 struct be_dma_mem *mem = &q->dma_mem;
43 pci_free_consistent(adapter->pdev, mem->size,
47 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
48 u16 len, u16 entry_size)
50 struct be_dma_mem *mem = &q->dma_mem;
52 memset(q, 0, sizeof(*q));
54 q->entry_size = entry_size;
55 mem->size = len * entry_size;
56 mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
59 memset(mem->va, 0, mem->size);
63 static inline void *queue_head_node(struct be_queue_info *q)
65 return q->dma_mem.va + q->head * q->entry_size;
68 static inline void *queue_tail_node(struct be_queue_info *q)
70 return q->dma_mem.va + q->tail * q->entry_size;
73 static inline void queue_head_inc(struct be_queue_info *q)
75 index_inc(&q->head, q->len);
78 static inline void queue_tail_inc(struct be_queue_info *q)
80 index_inc(&q->tail, q->len);
83 static void be_intr_set(struct be_ctrl_info *ctrl, bool enable)
85 u8 __iomem *addr = ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
86 u32 reg = ioread32(addr);
87 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
88 if (!enabled && enable) {
89 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
90 } else if (enabled && !enable) {
91 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
93 printk(KERN_WARNING DRV_NAME
94 ": bad value in membar_int_ctrl reg=0x%x\n", reg);
100 static void be_rxq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
103 val |= qid & DB_RQ_RING_ID_MASK;
104 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
105 iowrite32(val, ctrl->db + DB_RQ_OFFSET);
108 static void be_txq_notify(struct be_ctrl_info *ctrl, u16 qid, u16 posted)
111 val |= qid & DB_TXULP_RING_ID_MASK;
112 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
113 iowrite32(val, ctrl->db + DB_TXULP1_OFFSET);
116 static void be_eq_notify(struct be_ctrl_info *ctrl, u16 qid,
117 bool arm, bool clear_int, u16 num_popped)
120 val |= qid & DB_EQ_RING_ID_MASK;
122 val |= 1 << DB_EQ_REARM_SHIFT;
124 val |= 1 << DB_EQ_CLR_SHIFT;
125 val |= 1 << DB_EQ_EVNT_SHIFT;
126 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
127 iowrite32(val, ctrl->db + DB_EQ_OFFSET);
130 static void be_cq_notify(struct be_ctrl_info *ctrl, u16 qid,
131 bool arm, u16 num_popped)
134 val |= qid & DB_CQ_RING_ID_MASK;
136 val |= 1 << DB_CQ_REARM_SHIFT;
137 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
138 iowrite32(val, ctrl->db + DB_CQ_OFFSET);
142 static int be_mac_addr_set(struct net_device *netdev, void *p)
144 struct be_adapter *adapter = netdev_priv(netdev);
145 struct sockaddr *addr = p;
148 if (netif_running(netdev)) {
149 status = be_cmd_pmac_del(&adapter->ctrl, adapter->if_handle,
154 status = be_cmd_pmac_add(&adapter->ctrl, (u8 *)addr->sa_data,
155 adapter->if_handle, &adapter->pmac_id);
159 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
164 static void netdev_stats_update(struct be_adapter *adapter)
166 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
167 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
168 struct be_port_rxf_stats *port_stats =
169 &rxf_stats->port[adapter->port_num];
170 struct net_device_stats *dev_stats = &adapter->stats.net_stats;
172 dev_stats->rx_packets = port_stats->rx_total_frames;
173 dev_stats->tx_packets = port_stats->tx_unicastframes +
174 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
175 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
176 (u64) port_stats->rx_bytes_lsd;
177 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
178 (u64) port_stats->tx_bytes_lsd;
180 /* bad pkts received */
181 dev_stats->rx_errors = port_stats->rx_crc_errors +
182 port_stats->rx_alignment_symbol_errors +
183 port_stats->rx_in_range_errors +
184 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
186 /* packet transmit problems */
187 dev_stats->tx_errors = 0;
189 /* no space in linux buffers */
190 dev_stats->rx_dropped = 0;
192 /* no space available in linux */
193 dev_stats->tx_dropped = 0;
195 dev_stats->multicast = port_stats->tx_multicastframes;
196 dev_stats->collisions = 0;
198 /* detailed rx errors */
199 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
200 port_stats->rx_out_range_errors + port_stats->rx_frame_too_long;
201 /* receive ring buffer overflow */
202 dev_stats->rx_over_errors = 0;
203 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
205 /* frame alignment errors */
206 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
207 /* receiver fifo overrun */
208 /* drops_no_pbuf is no per i/f, it's per BE card */
209 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
210 port_stats->rx_input_fifo_overflow +
211 rxf_stats->rx_drops_no_pbuf;
212 /* receiver missed packetd */
213 dev_stats->rx_missed_errors = 0;
214 /* detailed tx_errors */
215 dev_stats->tx_aborted_errors = 0;
216 dev_stats->tx_carrier_errors = 0;
217 dev_stats->tx_fifo_errors = 0;
218 dev_stats->tx_heartbeat_errors = 0;
219 dev_stats->tx_window_errors = 0;
222 static void be_link_status_update(struct be_adapter *adapter)
224 struct be_link_info *prev = &adapter->link;
225 struct be_link_info now = { 0 };
226 struct net_device *netdev = adapter->netdev;
228 be_cmd_link_status_query(&adapter->ctrl, &now);
230 /* If link came up or went down */
231 if (now.speed != prev->speed && (now.speed == PHY_LINK_SPEED_ZERO ||
232 prev->speed == PHY_LINK_SPEED_ZERO)) {
233 if (now.speed == PHY_LINK_SPEED_ZERO) {
234 netif_stop_queue(netdev);
235 netif_carrier_off(netdev);
236 printk(KERN_INFO "%s: Link down\n", netdev->name);
238 netif_start_queue(netdev);
239 netif_carrier_on(netdev);
240 printk(KERN_INFO "%s: Link up\n", netdev->name);
246 /* Update the EQ delay n BE based on the RX frags consumed / sec */
247 static void be_rx_eqd_update(struct be_adapter *adapter)
249 struct be_ctrl_info *ctrl = &adapter->ctrl;
250 struct be_eq_obj *rx_eq = &adapter->rx_eq;
251 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
255 if (!rx_eq->enable_aic)
259 if (time_before(now, stats->rx_fps_jiffies)) {
260 stats->rx_fps_jiffies = now;
264 /* Update once a second */
265 if ((now - stats->rx_fps_jiffies) < HZ)
268 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
269 ((now - stats->rx_fps_jiffies) / HZ);
271 stats->rx_fps_jiffies = now;
272 stats->be_prev_rx_frags = stats->be_rx_frags;
273 eqd = stats->be_rx_fps / 110000;
275 if (eqd > rx_eq->max_eqd)
276 eqd = rx_eq->max_eqd;
277 if (eqd < rx_eq->min_eqd)
278 eqd = rx_eq->min_eqd;
281 if (eqd != rx_eq->cur_eqd)
282 be_cmd_modify_eqd(ctrl, rx_eq->q.id, eqd);
284 rx_eq->cur_eqd = eqd;
287 static struct net_device_stats *be_get_stats(struct net_device *dev)
289 struct be_adapter *adapter = netdev_priv(dev);
291 return &adapter->stats.net_stats;
294 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
298 do_div(rate, ticks / HZ);
299 rate <<= 3; /* bytes/sec -> bits/sec */
300 do_div(rate, 1000000ul); /* MB/Sec */
305 static void be_tx_rate_update(struct be_adapter *adapter)
307 struct be_drvr_stats *stats = drvr_stats(adapter);
310 /* Wrapped around? */
311 if (time_before(now, stats->be_tx_jiffies)) {
312 stats->be_tx_jiffies = now;
316 /* Update tx rate once in two seconds */
317 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
318 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
319 - stats->be_tx_bytes_prev,
320 now - stats->be_tx_jiffies);
321 stats->be_tx_jiffies = now;
322 stats->be_tx_bytes_prev = stats->be_tx_bytes;
326 static void be_tx_stats_update(struct be_adapter *adapter,
327 u32 wrb_cnt, u32 copied, bool stopped)
329 struct be_drvr_stats *stats = drvr_stats(adapter);
331 stats->be_tx_wrbs += wrb_cnt;
332 stats->be_tx_bytes += copied;
334 stats->be_tx_stops++;
337 /* Determine number of WRB entries needed to xmit data in an skb */
338 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
342 if (skb->len > skb->data_len)
344 cnt += skb_shinfo(skb)->nr_frags;
345 skb = skb_shinfo(skb)->frag_list;
347 /* to account for hdr wrb */
350 /* add a dummy to make it an even num */
355 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
359 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
361 wrb->frag_pa_hi = upper_32_bits(addr);
362 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
363 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
366 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
367 bool vlan, u32 wrb_cnt, u32 len)
369 memset(hdr, 0, sizeof(*hdr));
371 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
373 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
374 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
375 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
376 hdr, skb_shinfo(skb)->gso_size);
377 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
379 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
380 else if (is_udp_pkt(skb))
381 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
384 if (vlan && vlan_tx_tag_present(skb)) {
385 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
386 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
387 hdr, vlan_tx_tag_get(skb));
390 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
391 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
392 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
393 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
397 static int make_tx_wrbs(struct be_adapter *adapter,
398 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
402 struct pci_dev *pdev = adapter->pdev;
403 struct sk_buff *first_skb = skb;
404 struct be_queue_info *txq = &adapter->tx_obj.q;
405 struct be_eth_wrb *wrb;
406 struct be_eth_hdr_wrb *hdr;
408 atomic_add(wrb_cnt, &txq->used);
409 hdr = queue_head_node(txq);
413 if (skb->len > skb->data_len) {
414 int len = skb->len - skb->data_len;
415 busaddr = pci_map_single(pdev, skb->data, len,
417 wrb = queue_head_node(txq);
418 wrb_fill(wrb, busaddr, len);
419 be_dws_cpu_to_le(wrb, sizeof(*wrb));
424 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
425 struct skb_frag_struct *frag =
426 &skb_shinfo(skb)->frags[i];
427 busaddr = pci_map_page(pdev, frag->page,
429 frag->size, PCI_DMA_TODEVICE);
430 wrb = queue_head_node(txq);
431 wrb_fill(wrb, busaddr, frag->size);
432 be_dws_cpu_to_le(wrb, sizeof(*wrb));
434 copied += frag->size;
436 skb = skb_shinfo(skb)->frag_list;
440 wrb = queue_head_node(txq);
442 be_dws_cpu_to_le(wrb, sizeof(*wrb));
446 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
448 be_dws_cpu_to_le(hdr, sizeof(*hdr));
453 static int be_xmit(struct sk_buff *skb, struct net_device *netdev)
455 struct be_adapter *adapter = netdev_priv(netdev);
456 struct be_tx_obj *tx_obj = &adapter->tx_obj;
457 struct be_queue_info *txq = &tx_obj->q;
458 u32 wrb_cnt = 0, copied = 0;
459 u32 start = txq->head;
460 bool dummy_wrb, stopped = false;
462 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
464 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
466 /* record the sent skb in the sent_skb table */
467 BUG_ON(tx_obj->sent_skb_list[start]);
468 tx_obj->sent_skb_list[start] = skb;
470 /* Ensure that txq has space for the next skb; Else stop the queue
471 * *BEFORE* ringing the tx doorbell, so that we serialze the
472 * tx compls of the current transmit which'll wake up the queue
474 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >= txq->len) {
475 netif_stop_queue(netdev);
479 be_txq_notify(&adapter->ctrl, txq->id, wrb_cnt);
481 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
485 static int be_change_mtu(struct net_device *netdev, int new_mtu)
487 struct be_adapter *adapter = netdev_priv(netdev);
488 if (new_mtu < BE_MIN_MTU ||
489 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
490 dev_info(&adapter->pdev->dev,
491 "MTU must be between %d and %d bytes\n",
492 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
495 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
496 netdev->mtu, new_mtu);
497 netdev->mtu = new_mtu;
502 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
503 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
504 * set the BE in promiscuous VLAN mode.
506 static void be_vid_config(struct net_device *netdev)
508 struct be_adapter *adapter = netdev_priv(netdev);
509 u16 vtag[BE_NUM_VLANS_SUPPORTED];
512 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
513 /* Construct VLAN Table to give to HW */
514 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
515 if (adapter->vlan_tag[i]) {
516 vtag[ntags] = cpu_to_le16(i);
520 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
523 be_cmd_vlan_config(&adapter->ctrl, adapter->if_handle,
528 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
530 struct be_adapter *adapter = netdev_priv(netdev);
531 struct be_eq_obj *rx_eq = &adapter->rx_eq;
532 struct be_eq_obj *tx_eq = &adapter->tx_eq;
533 struct be_ctrl_info *ctrl = &adapter->ctrl;
535 be_eq_notify(ctrl, rx_eq->q.id, false, false, 0);
536 be_eq_notify(ctrl, tx_eq->q.id, false, false, 0);
537 adapter->vlan_grp = grp;
538 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
539 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
542 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
544 struct be_adapter *adapter = netdev_priv(netdev);
546 adapter->num_vlans++;
547 adapter->vlan_tag[vid] = 1;
549 be_vid_config(netdev);
552 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
554 struct be_adapter *adapter = netdev_priv(netdev);
556 adapter->num_vlans--;
557 adapter->vlan_tag[vid] = 0;
559 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
560 be_vid_config(netdev);
563 static void be_set_multicast_filter(struct net_device *netdev)
565 struct be_adapter *adapter = netdev_priv(netdev);
566 struct dev_mc_list *mc_ptr;
567 u8 mac_addr[32][ETH_ALEN];
570 if (netdev->flags & IFF_ALLMULTI) {
571 /* set BE in Multicast promiscuous */
572 be_cmd_mcast_mac_set(&adapter->ctrl,
573 adapter->if_handle, NULL, 0, true);
577 for (mc_ptr = netdev->mc_list; mc_ptr; mc_ptr = mc_ptr->next) {
578 memcpy(&mac_addr[i][0], mc_ptr->dmi_addr, ETH_ALEN);
580 be_cmd_mcast_mac_set(&adapter->ctrl,
581 adapter->if_handle, &mac_addr[0][0], i, false);
588 /* reset the promiscuous mode also. */
589 be_cmd_mcast_mac_set(&adapter->ctrl,
590 adapter->if_handle, &mac_addr[0][0], i, false);
594 static void be_set_multicast_list(struct net_device *netdev)
596 struct be_adapter *adapter = netdev_priv(netdev);
598 if (netdev->flags & IFF_PROMISC) {
599 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 1);
601 be_cmd_promiscuous_config(&adapter->ctrl, adapter->port_num, 0);
602 be_set_multicast_filter(netdev);
606 static void be_rx_rate_update(struct be_adapter *adapter)
608 struct be_drvr_stats *stats = drvr_stats(adapter);
612 if (time_before(now, stats->be_rx_jiffies)) {
613 stats->be_rx_jiffies = now;
617 /* Update the rate once in two seconds */
618 if ((now - stats->be_rx_jiffies) < 2 * HZ)
621 stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
622 - stats->be_rx_bytes_prev,
623 now - stats->be_rx_jiffies);
624 stats->be_rx_jiffies = now;
625 stats->be_rx_bytes_prev = stats->be_rx_bytes;
628 static void be_rx_stats_update(struct be_adapter *adapter,
629 u32 pktsize, u16 numfrags)
631 struct be_drvr_stats *stats = drvr_stats(adapter);
633 stats->be_rx_compl++;
634 stats->be_rx_frags += numfrags;
635 stats->be_rx_bytes += pktsize;
638 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
640 u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
642 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
643 ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
644 ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
646 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
647 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
649 ipv6_chk = (ip_version && (tcpf || udpf));
651 return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
654 static struct be_rx_page_info *
655 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
657 struct be_rx_page_info *rx_page_info;
658 struct be_queue_info *rxq = &adapter->rx_obj.q;
660 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
661 BUG_ON(!rx_page_info->page);
663 if (rx_page_info->last_page_user)
664 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
665 adapter->big_page_size, PCI_DMA_FROMDEVICE);
667 atomic_dec(&rxq->used);
671 /* Throwaway the data in the Rx completion */
672 static void be_rx_compl_discard(struct be_adapter *adapter,
673 struct be_eth_rx_compl *rxcp)
675 struct be_queue_info *rxq = &adapter->rx_obj.q;
676 struct be_rx_page_info *page_info;
677 u16 rxq_idx, i, num_rcvd;
679 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
680 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
682 for (i = 0; i < num_rcvd; i++) {
683 page_info = get_rx_page_info(adapter, rxq_idx);
684 put_page(page_info->page);
685 memset(page_info, 0, sizeof(*page_info));
686 index_inc(&rxq_idx, rxq->len);
691 * skb_fill_rx_data forms a complete skb for an ether frame
694 static void skb_fill_rx_data(struct be_adapter *adapter,
695 struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
697 struct be_queue_info *rxq = &adapter->rx_obj.q;
698 struct be_rx_page_info *page_info;
699 u16 rxq_idx, i, num_rcvd;
700 u32 pktsize, hdr_len, curr_frag_len;
703 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
704 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
705 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
707 page_info = get_rx_page_info(adapter, rxq_idx);
709 start = page_address(page_info->page) + page_info->page_offset;
712 /* Copy data in the first descriptor of this completion */
713 curr_frag_len = min(pktsize, rx_frag_size);
715 /* Copy the header portion into skb_data */
716 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
717 memcpy(skb->data, start, hdr_len);
718 skb->len = curr_frag_len;
719 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
720 /* Complete packet has now been moved to data */
721 put_page(page_info->page);
723 skb->tail += curr_frag_len;
725 skb_shinfo(skb)->nr_frags = 1;
726 skb_shinfo(skb)->frags[0].page = page_info->page;
727 skb_shinfo(skb)->frags[0].page_offset =
728 page_info->page_offset + hdr_len;
729 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
730 skb->data_len = curr_frag_len - hdr_len;
731 skb->tail += hdr_len;
733 memset(page_info, 0, sizeof(*page_info));
735 if (pktsize <= rx_frag_size) {
736 BUG_ON(num_rcvd != 1);
740 /* More frags present for this completion */
741 pktsize -= curr_frag_len; /* account for above copied frag */
742 for (i = 1; i < num_rcvd; i++) {
743 index_inc(&rxq_idx, rxq->len);
744 page_info = get_rx_page_info(adapter, rxq_idx);
746 curr_frag_len = min(pktsize, rx_frag_size);
748 skb_shinfo(skb)->frags[i].page = page_info->page;
749 skb_shinfo(skb)->frags[i].page_offset = page_info->page_offset;
750 skb_shinfo(skb)->frags[i].size = curr_frag_len;
751 skb->len += curr_frag_len;
752 skb->data_len += curr_frag_len;
753 skb_shinfo(skb)->nr_frags++;
754 pktsize -= curr_frag_len;
756 memset(page_info, 0, sizeof(*page_info));
759 be_rx_stats_update(adapter, pktsize, num_rcvd);
763 /* Process the RX completion indicated by rxcp when LRO is disabled */
764 static void be_rx_compl_process(struct be_adapter *adapter,
765 struct be_eth_rx_compl *rxcp)
770 vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
772 skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN);
775 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
776 be_rx_compl_discard(adapter, rxcp);
780 skb_reserve(skb, NET_IP_ALIGN);
782 skb_fill_rx_data(adapter, skb, rxcp);
784 if (do_pkt_csum(rxcp, adapter->rx_csum))
785 skb->ip_summed = CHECKSUM_NONE;
787 skb->ip_summed = CHECKSUM_UNNECESSARY;
789 skb->truesize = skb->len + sizeof(struct sk_buff);
790 skb->protocol = eth_type_trans(skb, adapter->netdev);
791 skb->dev = adapter->netdev;
794 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
798 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
799 vid = be16_to_cpu(vid);
800 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
802 netif_receive_skb(skb);
805 adapter->netdev->last_rx = jiffies;
810 /* Process the RX completion indicated by rxcp when LRO is enabled */
811 static void be_rx_compl_process_lro(struct be_adapter *adapter,
812 struct be_eth_rx_compl *rxcp)
814 struct be_rx_page_info *page_info;
815 struct skb_frag_struct rx_frags[BE_MAX_FRAGS_PER_FRAME];
816 struct be_queue_info *rxq = &adapter->rx_obj.q;
817 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
818 u16 i, rxq_idx = 0, vid;
820 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
821 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
822 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
823 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
825 remaining = pkt_size;
826 for (i = 0; i < num_rcvd; i++) {
827 page_info = get_rx_page_info(adapter, rxq_idx);
829 curr_frag_len = min(remaining, rx_frag_size);
831 rx_frags[i].page = page_info->page;
832 rx_frags[i].page_offset = page_info->page_offset;
833 rx_frags[i].size = curr_frag_len;
834 remaining -= curr_frag_len;
836 index_inc(&rxq_idx, rxq->len);
838 memset(page_info, 0, sizeof(*page_info));
841 if (likely(!vlanf)) {
842 lro_receive_frags(&adapter->rx_obj.lro_mgr, rx_frags, pkt_size,
845 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
846 vid = be16_to_cpu(vid);
848 if (!adapter->vlan_grp || adapter->num_vlans == 0)
851 lro_vlan_hwaccel_receive_frags(&adapter->rx_obj.lro_mgr,
852 rx_frags, pkt_size, pkt_size, adapter->vlan_grp,
856 be_rx_stats_update(adapter, pkt_size, num_rcvd);
860 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
862 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
864 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
867 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
869 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
871 queue_tail_inc(&adapter->rx_obj.cq);
875 static inline struct page *be_alloc_pages(u32 size)
877 gfp_t alloc_flags = GFP_ATOMIC;
878 u32 order = get_order(size);
880 alloc_flags |= __GFP_COMP;
881 return alloc_pages(alloc_flags, order);
885 * Allocate a page, split it to fragments of size rx_frag_size and post as
886 * receive buffers to BE
888 static void be_post_rx_frags(struct be_adapter *adapter)
890 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
891 struct be_rx_page_info *page_info = NULL;
892 struct be_queue_info *rxq = &adapter->rx_obj.q;
893 struct page *pagep = NULL;
894 struct be_eth_rx_d *rxd;
895 u64 page_dmaaddr = 0, frag_dmaaddr;
896 u32 posted, page_offset = 0;
898 page_info = &page_info_tbl[rxq->head];
899 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
901 pagep = be_alloc_pages(adapter->big_page_size);
902 if (unlikely(!pagep)) {
903 drvr_stats(adapter)->be_ethrx_post_fail++;
906 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
907 adapter->big_page_size,
909 page_info->page_offset = 0;
912 page_info->page_offset = page_offset + rx_frag_size;
914 page_offset = page_info->page_offset;
915 page_info->page = pagep;
916 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
917 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
919 rxd = queue_head_node(rxq);
920 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
921 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
924 /* Any space left in the current big page for another frag? */
925 if ((page_offset + rx_frag_size + rx_frag_size) >
926 adapter->big_page_size) {
928 page_info->last_page_user = true;
930 page_info = &page_info_tbl[rxq->head];
933 page_info->last_page_user = true;
936 atomic_add(posted, &rxq->used);
937 be_rxq_notify(&adapter->ctrl, rxq->id, posted);
938 } else if (atomic_read(&rxq->used) == 0) {
939 /* Let be_worker replenish when memory is available */
940 adapter->rx_post_starved = true;
946 static struct be_eth_tx_compl *
947 be_tx_compl_get(struct be_adapter *adapter)
949 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
950 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
952 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
955 be_dws_le_to_cpu(txcp, sizeof(*txcp));
957 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
959 queue_tail_inc(tx_cq);
963 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
965 struct be_queue_info *txq = &adapter->tx_obj.q;
966 struct be_eth_wrb *wrb;
967 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
968 struct sk_buff *sent_skb;
970 u16 cur_index, num_wrbs = 0;
972 cur_index = txq->tail;
973 sent_skb = sent_skbs[cur_index];
975 sent_skbs[cur_index] = NULL;
978 cur_index = txq->tail;
979 wrb = queue_tail_node(txq);
980 be_dws_le_to_cpu(wrb, sizeof(*wrb));
981 busaddr = ((u64)wrb->frag_pa_hi << 32) | (u64)wrb->frag_pa_lo;
983 pci_unmap_single(adapter->pdev, busaddr,
984 wrb->frag_len, PCI_DMA_TODEVICE);
988 } while (cur_index != last_index);
990 atomic_sub(num_wrbs, &txq->used);
995 static void be_rx_q_clean(struct be_adapter *adapter)
997 struct be_rx_page_info *page_info;
998 struct be_queue_info *rxq = &adapter->rx_obj.q;
999 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1000 struct be_eth_rx_compl *rxcp;
1003 /* First cleanup pending rx completions */
1004 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1005 be_rx_compl_discard(adapter, rxcp);
1006 be_cq_notify(&adapter->ctrl, rx_cq->id, true, 1);
1009 /* Then free posted rx buffer that were not used */
1010 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1011 for (; tail != rxq->head; index_inc(&tail, rxq->len)) {
1012 page_info = get_rx_page_info(adapter, tail);
1013 put_page(page_info->page);
1014 memset(page_info, 0, sizeof(*page_info));
1016 BUG_ON(atomic_read(&rxq->used));
1019 static void be_tx_q_clean(struct be_adapter *adapter)
1021 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
1022 struct sk_buff *sent_skb;
1023 struct be_queue_info *txq = &adapter->tx_obj.q;
1027 while (atomic_read(&txq->used)) {
1028 sent_skb = sent_skbs[txq->tail];
1029 last_index = txq->tail;
1030 index_adv(&last_index,
1031 wrb_cnt_for_skb(sent_skb, &dummy_wrb) - 1, txq->len);
1032 be_tx_compl_process(adapter, last_index);
1036 static void be_tx_queues_destroy(struct be_adapter *adapter)
1038 struct be_queue_info *q;
1040 q = &adapter->tx_obj.q;
1042 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_TXQ);
1043 be_queue_free(adapter, q);
1045 q = &adapter->tx_obj.cq;
1047 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1048 be_queue_free(adapter, q);
1050 /* No more tx completions can be rcvd now; clean up if there are
1051 * any pending completions or pending tx requests */
1052 be_tx_q_clean(adapter);
1054 q = &adapter->tx_eq.q;
1056 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1057 be_queue_free(adapter, q);
1060 static int be_tx_queues_create(struct be_adapter *adapter)
1062 struct be_queue_info *eq, *q, *cq;
1064 adapter->tx_eq.max_eqd = 0;
1065 adapter->tx_eq.min_eqd = 0;
1066 adapter->tx_eq.cur_eqd = 96;
1067 adapter->tx_eq.enable_aic = false;
1068 /* Alloc Tx Event queue */
1069 eq = &adapter->tx_eq.q;
1070 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1073 /* Ask BE to create Tx Event queue */
1074 if (be_cmd_eq_create(&adapter->ctrl, eq, adapter->tx_eq.cur_eqd))
1076 /* Alloc TX eth compl queue */
1077 cq = &adapter->tx_obj.cq;
1078 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1079 sizeof(struct be_eth_tx_compl)))
1082 /* Ask BE to create Tx eth compl queue */
1083 if (be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3))
1086 /* Alloc TX eth queue */
1087 q = &adapter->tx_obj.q;
1088 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1091 /* Ask BE to create Tx eth queue */
1092 if (be_cmd_txq_create(&adapter->ctrl, q, cq))
1097 be_queue_free(adapter, q);
1099 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1101 be_queue_free(adapter, cq);
1103 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1105 be_queue_free(adapter, eq);
1109 static void be_rx_queues_destroy(struct be_adapter *adapter)
1111 struct be_queue_info *q;
1113 q = &adapter->rx_obj.q;
1115 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_RXQ);
1116 be_rx_q_clean(adapter);
1118 be_queue_free(adapter, q);
1120 q = &adapter->rx_obj.cq;
1122 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_CQ);
1123 be_queue_free(adapter, q);
1125 q = &adapter->rx_eq.q;
1127 be_cmd_q_destroy(&adapter->ctrl, q, QTYPE_EQ);
1128 be_queue_free(adapter, q);
1131 static int be_rx_queues_create(struct be_adapter *adapter)
1133 struct be_queue_info *eq, *q, *cq;
1136 adapter->max_rx_coal = BE_MAX_FRAGS_PER_FRAME;
1137 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1138 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1139 adapter->rx_eq.min_eqd = 0;
1140 adapter->rx_eq.cur_eqd = 0;
1141 adapter->rx_eq.enable_aic = true;
1143 /* Alloc Rx Event queue */
1144 eq = &adapter->rx_eq.q;
1145 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1146 sizeof(struct be_eq_entry));
1150 /* Ask BE to create Rx Event queue */
1151 rc = be_cmd_eq_create(&adapter->ctrl, eq, adapter->rx_eq.cur_eqd);
1155 /* Alloc RX eth compl queue */
1156 cq = &adapter->rx_obj.cq;
1157 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1158 sizeof(struct be_eth_rx_compl));
1162 /* Ask BE to create Rx eth compl queue */
1163 rc = be_cmd_cq_create(&adapter->ctrl, cq, eq, false, false, 3);
1167 /* Alloc RX eth queue */
1168 q = &adapter->rx_obj.q;
1169 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1173 /* Ask BE to create Rx eth queue */
1174 rc = be_cmd_rxq_create(&adapter->ctrl, q, cq->id, rx_frag_size,
1175 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1181 be_queue_free(adapter, q);
1183 be_cmd_q_destroy(&adapter->ctrl, cq, QTYPE_CQ);
1185 be_queue_free(adapter, cq);
1187 be_cmd_q_destroy(&adapter->ctrl, eq, QTYPE_EQ);
1189 be_queue_free(adapter, eq);
1192 static bool event_get(struct be_eq_obj *eq_obj, u16 *rid)
1194 struct be_eq_entry *entry = queue_tail_node(&eq_obj->q);
1195 u32 evt = entry->evt;
1200 evt = le32_to_cpu(evt);
1201 *rid = (evt >> EQ_ENTRY_RES_ID_SHIFT) & EQ_ENTRY_RES_ID_MASK;
1203 queue_tail_inc(&eq_obj->q);
1207 static int event_handle(struct be_ctrl_info *ctrl,
1208 struct be_eq_obj *eq_obj)
1210 u16 rid = 0, num = 0;
1212 while (event_get(eq_obj, &rid))
1215 /* We can see an interrupt and no event */
1216 be_eq_notify(ctrl, eq_obj->q.id, true, true, num);
1218 napi_schedule(&eq_obj->napi);
1223 static irqreturn_t be_intx(int irq, void *dev)
1225 struct be_adapter *adapter = dev;
1226 struct be_ctrl_info *ctrl = &adapter->ctrl;
1229 tx = event_handle(ctrl, &adapter->tx_eq);
1230 rx = event_handle(ctrl, &adapter->rx_eq);
1238 static irqreturn_t be_msix_rx(int irq, void *dev)
1240 struct be_adapter *adapter = dev;
1242 event_handle(&adapter->ctrl, &adapter->rx_eq);
1247 static irqreturn_t be_msix_tx(int irq, void *dev)
1249 struct be_adapter *adapter = dev;
1251 event_handle(&adapter->ctrl, &adapter->tx_eq);
1256 static inline bool do_lro(struct be_adapter *adapter,
1257 struct be_eth_rx_compl *rxcp)
1259 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1260 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1263 drvr_stats(adapter)->be_rxcp_err++;
1265 return (!tcp_frame || err || (adapter->max_rx_coal <= 1)) ?
1269 int be_poll_rx(struct napi_struct *napi, int budget)
1271 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1272 struct be_adapter *adapter =
1273 container_of(rx_eq, struct be_adapter, rx_eq);
1274 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1275 struct be_eth_rx_compl *rxcp;
1278 for (work_done = 0; work_done < budget; work_done++) {
1279 rxcp = be_rx_compl_get(adapter);
1283 if (do_lro(adapter, rxcp))
1284 be_rx_compl_process_lro(adapter, rxcp);
1286 be_rx_compl_process(adapter, rxcp);
1289 lro_flush_all(&adapter->rx_obj.lro_mgr);
1291 /* Refill the queue */
1292 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1293 be_post_rx_frags(adapter);
1296 if (work_done < budget) {
1297 napi_complete(napi);
1298 be_cq_notify(&adapter->ctrl, rx_cq->id, true, work_done);
1300 /* More to be consumed; continue with interrupts disabled */
1301 be_cq_notify(&adapter->ctrl, rx_cq->id, false, work_done);
1306 /* For TX we don't honour budget; consume everything */
1307 int be_poll_tx(struct napi_struct *napi, int budget)
1309 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1310 struct be_adapter *adapter =
1311 container_of(tx_eq, struct be_adapter, tx_eq);
1312 struct be_tx_obj *tx_obj = &adapter->tx_obj;
1313 struct be_queue_info *tx_cq = &tx_obj->cq;
1314 struct be_queue_info *txq = &tx_obj->q;
1315 struct be_eth_tx_compl *txcp;
1319 while ((txcp = be_tx_compl_get(adapter))) {
1320 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1322 be_tx_compl_process(adapter, end_idx);
1326 /* As Tx wrbs have been freed up, wake up netdev queue if
1327 * it was stopped due to lack of tx wrbs.
1329 if (netif_queue_stopped(adapter->netdev) &&
1330 atomic_read(&txq->used) < txq->len / 2) {
1331 netif_wake_queue(adapter->netdev);
1334 napi_complete(napi);
1336 be_cq_notify(&adapter->ctrl, tx_cq->id, true, num_cmpl);
1338 drvr_stats(adapter)->be_tx_events++;
1339 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1344 static void be_worker(struct work_struct *work)
1346 struct be_adapter *adapter =
1347 container_of(work, struct be_adapter, work.work);
1351 be_link_status_update(adapter);
1354 status = be_cmd_get_stats(&adapter->ctrl, &adapter->stats.cmd);
1356 netdev_stats_update(adapter);
1359 be_rx_eqd_update(adapter);
1361 be_tx_rate_update(adapter);
1362 be_rx_rate_update(adapter);
1364 if (adapter->rx_post_starved) {
1365 adapter->rx_post_starved = false;
1366 be_post_rx_frags(adapter);
1369 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1372 static void be_msix_enable(struct be_adapter *adapter)
1376 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1377 adapter->msix_entries[i].entry = i;
1379 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1380 BE_NUM_MSIX_VECTORS);
1382 adapter->msix_enabled = true;
1386 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1388 return adapter->msix_entries[eq_id -
1389 8 * adapter->ctrl.pci_func].vector;
1392 static int be_msix_register(struct be_adapter *adapter)
1394 struct net_device *netdev = adapter->netdev;
1395 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1396 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1399 sprintf(tx_eq->desc, "%s-tx", netdev->name);
1400 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1401 status = request_irq(vec, be_msix_tx, 0, tx_eq->desc, adapter);
1405 sprintf(rx_eq->desc, "%s-rx", netdev->name);
1406 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1407 status = request_irq(vec, be_msix_rx, 0, rx_eq->desc, adapter);
1408 if (status) { /* Free TX IRQ */
1409 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1410 free_irq(vec, adapter);
1415 dev_warn(&adapter->pdev->dev,
1416 "MSIX Request IRQ failed - err %d\n", status);
1417 pci_disable_msix(adapter->pdev);
1418 adapter->msix_enabled = false;
1422 static int be_irq_register(struct be_adapter *adapter)
1424 struct net_device *netdev = adapter->netdev;
1427 if (adapter->msix_enabled) {
1428 status = be_msix_register(adapter);
1434 netdev->irq = adapter->pdev->irq;
1435 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1438 dev_err(&adapter->pdev->dev,
1439 "INTx request IRQ failed - err %d\n", status);
1443 adapter->isr_registered = true;
1447 static void be_irq_unregister(struct be_adapter *adapter)
1449 struct net_device *netdev = adapter->netdev;
1452 if (!adapter->isr_registered)
1456 if (!adapter->msix_enabled) {
1457 free_irq(netdev->irq, adapter);
1462 vec = be_msix_vec_get(adapter, adapter->tx_eq.q.id);
1463 free_irq(vec, adapter);
1464 vec = be_msix_vec_get(adapter, adapter->rx_eq.q.id);
1465 free_irq(vec, adapter);
1467 adapter->isr_registered = false;
1471 static int be_open(struct net_device *netdev)
1473 struct be_adapter *adapter = netdev_priv(netdev);
1474 struct be_ctrl_info *ctrl = &adapter->ctrl;
1475 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1476 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1480 if_flags = BE_IF_FLAGS_BROADCAST | BE_IF_FLAGS_PROMISCUOUS |
1481 BE_IF_FLAGS_MCAST_PROMISCUOUS | BE_IF_FLAGS_UNTAGGED |
1482 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1483 status = be_cmd_if_create(ctrl, if_flags, netdev->dev_addr,
1484 false/* pmac_invalid */, &adapter->if_handle,
1489 be_vid_config(netdev);
1491 status = be_cmd_set_flow_control(ctrl, true, true);
1495 status = be_tx_queues_create(adapter);
1499 status = be_rx_queues_create(adapter);
1503 /* First time posting */
1504 be_post_rx_frags(adapter);
1506 napi_enable(&rx_eq->napi);
1507 napi_enable(&tx_eq->napi);
1509 be_irq_register(adapter);
1511 be_intr_set(ctrl, true);
1513 /* The evt queues are created in the unarmed state; arm them */
1514 be_eq_notify(ctrl, rx_eq->q.id, true, false, 0);
1515 be_eq_notify(ctrl, tx_eq->q.id, true, false, 0);
1517 /* The compl queues are created in the unarmed state; arm them */
1518 be_cq_notify(ctrl, adapter->rx_obj.cq.id, true, 0);
1519 be_cq_notify(ctrl, adapter->tx_obj.cq.id, true, 0);
1521 be_link_status_update(adapter);
1523 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1527 be_tx_queues_destroy(adapter);
1529 be_cmd_if_destroy(ctrl, adapter->if_handle);
1534 static int be_close(struct net_device *netdev)
1536 struct be_adapter *adapter = netdev_priv(netdev);
1537 struct be_ctrl_info *ctrl = &adapter->ctrl;
1538 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1539 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1542 cancel_delayed_work(&adapter->work);
1544 netif_stop_queue(netdev);
1545 netif_carrier_off(netdev);
1546 adapter->link.speed = PHY_LINK_SPEED_ZERO;
1548 be_intr_set(ctrl, false);
1550 if (adapter->msix_enabled) {
1551 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1552 synchronize_irq(vec);
1553 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1554 synchronize_irq(vec);
1556 synchronize_irq(netdev->irq);
1558 be_irq_unregister(adapter);
1560 napi_disable(&rx_eq->napi);
1561 napi_disable(&tx_eq->napi);
1563 be_rx_queues_destroy(adapter);
1564 be_tx_queues_destroy(adapter);
1566 be_cmd_if_destroy(ctrl, adapter->if_handle);
1570 static int be_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr,
1571 void **ip_hdr, void **tcpudp_hdr,
1572 u64 *hdr_flags, void *priv)
1575 struct vlan_ethhdr *veh;
1577 u8 *va = page_address(frag->page) + frag->page_offset;
1578 unsigned long ll_hlen;
1581 eh = (struct ethhdr *)va;
1584 if (eh->h_proto != htons(ETH_P_IP)) {
1585 if (eh->h_proto == htons(ETH_P_8021Q)) {
1586 veh = (struct vlan_ethhdr *)va;
1587 if (veh->h_vlan_encapsulated_proto != htons(ETH_P_IP))
1590 ll_hlen += VLAN_HLEN;
1595 *hdr_flags = LRO_IPV4;
1596 iph = (struct iphdr *)(va + ll_hlen);
1598 if (iph->protocol != IPPROTO_TCP)
1600 *hdr_flags |= LRO_TCP;
1601 *tcpudp_hdr = (u8 *) (*ip_hdr) + (iph->ihl << 2);
1606 static void be_lro_init(struct be_adapter *adapter, struct net_device *netdev)
1608 struct net_lro_mgr *lro_mgr;
1610 lro_mgr = &adapter->rx_obj.lro_mgr;
1611 lro_mgr->dev = netdev;
1612 lro_mgr->features = LRO_F_NAPI;
1613 lro_mgr->ip_summed = CHECKSUM_UNNECESSARY;
1614 lro_mgr->ip_summed_aggr = CHECKSUM_UNNECESSARY;
1615 lro_mgr->max_desc = BE_MAX_LRO_DESCRIPTORS;
1616 lro_mgr->lro_arr = adapter->rx_obj.lro_desc;
1617 lro_mgr->get_frag_header = be_get_frag_header;
1618 lro_mgr->max_aggr = BE_MAX_FRAGS_PER_FRAME;
1621 static struct net_device_ops be_netdev_ops = {
1622 .ndo_open = be_open,
1623 .ndo_stop = be_close,
1624 .ndo_start_xmit = be_xmit,
1625 .ndo_get_stats = be_get_stats,
1626 .ndo_set_rx_mode = be_set_multicast_list,
1627 .ndo_set_mac_address = be_mac_addr_set,
1628 .ndo_change_mtu = be_change_mtu,
1629 .ndo_validate_addr = eth_validate_addr,
1630 .ndo_vlan_rx_register = be_vlan_register,
1631 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1632 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1635 static void be_netdev_init(struct net_device *netdev)
1637 struct be_adapter *adapter = netdev_priv(netdev);
1639 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1640 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_IP_CSUM |
1643 netdev->flags |= IFF_MULTICAST;
1645 adapter->rx_csum = true;
1647 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1649 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1651 be_lro_init(adapter, netdev);
1653 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1655 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx,
1658 netif_carrier_off(netdev);
1659 netif_stop_queue(netdev);
1662 static void be_unmap_pci_bars(struct be_adapter *adapter)
1664 struct be_ctrl_info *ctrl = &adapter->ctrl;
1670 iounmap(ctrl->pcicfg);
1673 static int be_map_pci_bars(struct be_adapter *adapter)
1677 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1678 pci_resource_len(adapter->pdev, 2));
1681 adapter->ctrl.csr = addr;
1683 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1687 adapter->ctrl.db = addr;
1689 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1690 pci_resource_len(adapter->pdev, 1));
1693 adapter->ctrl.pcicfg = addr;
1697 be_unmap_pci_bars(adapter);
1702 static void be_ctrl_cleanup(struct be_adapter *adapter)
1704 struct be_dma_mem *mem = &adapter->ctrl.mbox_mem_alloced;
1706 be_unmap_pci_bars(adapter);
1709 pci_free_consistent(adapter->pdev, mem->size,
1713 /* Initialize the mbox required to send cmds to BE */
1714 static int be_ctrl_init(struct be_adapter *adapter)
1716 struct be_ctrl_info *ctrl = &adapter->ctrl;
1717 struct be_dma_mem *mbox_mem_alloc = &ctrl->mbox_mem_alloced;
1718 struct be_dma_mem *mbox_mem_align = &ctrl->mbox_mem;
1722 status = be_map_pci_bars(adapter);
1726 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1727 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1728 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1729 if (!mbox_mem_alloc->va) {
1730 be_unmap_pci_bars(adapter);
1733 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1734 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1735 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1736 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1737 spin_lock_init(&ctrl->cmd_lock);
1739 val = ioread32(ctrl->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET);
1740 ctrl->pci_func = (val >> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT) &
1741 MEMBAR_CTRL_INT_CTRL_PFUNC_MASK;
1745 static void be_stats_cleanup(struct be_adapter *adapter)
1747 struct be_stats_obj *stats = &adapter->stats;
1748 struct be_dma_mem *cmd = &stats->cmd;
1751 pci_free_consistent(adapter->pdev, cmd->size,
1755 static int be_stats_init(struct be_adapter *adapter)
1757 struct be_stats_obj *stats = &adapter->stats;
1758 struct be_dma_mem *cmd = &stats->cmd;
1760 cmd->size = sizeof(struct be_cmd_req_get_stats);
1761 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
1762 if (cmd->va == NULL)
1767 static void __devexit be_remove(struct pci_dev *pdev)
1769 struct be_adapter *adapter = pci_get_drvdata(pdev);
1773 unregister_netdev(adapter->netdev);
1775 be_stats_cleanup(adapter);
1777 be_ctrl_cleanup(adapter);
1779 if (adapter->msix_enabled) {
1780 pci_disable_msix(adapter->pdev);
1781 adapter->msix_enabled = false;
1784 pci_set_drvdata(pdev, NULL);
1785 pci_release_regions(pdev);
1786 pci_disable_device(pdev);
1788 free_netdev(adapter->netdev);
1791 static int be_hw_up(struct be_adapter *adapter)
1793 struct be_ctrl_info *ctrl = &adapter->ctrl;
1796 status = be_cmd_POST(ctrl);
1800 status = be_cmd_get_fw_ver(ctrl, adapter->fw_ver);
1804 status = be_cmd_query_fw_cfg(ctrl, &adapter->port_num);
1808 static int __devinit be_probe(struct pci_dev *pdev,
1809 const struct pci_device_id *pdev_id)
1812 struct be_adapter *adapter;
1813 struct net_device *netdev;
1814 struct be_ctrl_info *ctrl;
1817 status = pci_enable_device(pdev);
1821 status = pci_request_regions(pdev, DRV_NAME);
1824 pci_set_master(pdev);
1826 netdev = alloc_etherdev(sizeof(struct be_adapter));
1827 if (netdev == NULL) {
1831 adapter = netdev_priv(netdev);
1832 adapter->pdev = pdev;
1833 pci_set_drvdata(pdev, adapter);
1834 adapter->netdev = netdev;
1836 be_msix_enable(adapter);
1838 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1840 netdev->features |= NETIF_F_HIGHDMA;
1842 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1844 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
1849 ctrl = &adapter->ctrl;
1850 status = be_ctrl_init(adapter);
1854 status = be_stats_init(adapter);
1858 status = be_hw_up(adapter);
1862 status = be_cmd_mac_addr_query(ctrl, mac, MAC_ADDRESS_TYPE_NETWORK,
1863 true /* permanent */, 0);
1866 memcpy(netdev->dev_addr, mac, ETH_ALEN);
1868 INIT_DELAYED_WORK(&adapter->work, be_worker);
1869 be_netdev_init(netdev);
1870 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
1872 status = register_netdev(netdev);
1876 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
1880 be_stats_cleanup(adapter);
1882 be_ctrl_cleanup(adapter);
1884 free_netdev(adapter->netdev);
1886 pci_release_regions(pdev);
1888 pci_disable_device(pdev);
1890 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
1894 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
1896 struct be_adapter *adapter = pci_get_drvdata(pdev);
1897 struct net_device *netdev = adapter->netdev;
1899 netif_device_detach(netdev);
1900 if (netif_running(netdev)) {
1906 pci_save_state(pdev);
1907 pci_disable_device(pdev);
1908 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1912 static int be_resume(struct pci_dev *pdev)
1915 struct be_adapter *adapter = pci_get_drvdata(pdev);
1916 struct net_device *netdev = adapter->netdev;
1918 netif_device_detach(netdev);
1920 status = pci_enable_device(pdev);
1924 pci_set_power_state(pdev, 0);
1925 pci_restore_state(pdev);
1927 if (netif_running(netdev)) {
1932 netif_device_attach(netdev);
1936 static struct pci_driver be_driver = {
1938 .id_table = be_dev_ids,
1940 .remove = be_remove,
1941 .suspend = be_suspend,
1945 static int __init be_init_module(void)
1947 if (rx_frag_size != 8192 && rx_frag_size != 4096
1948 && rx_frag_size != 2048) {
1949 printk(KERN_WARNING DRV_NAME
1950 " : Module param rx_frag_size must be 2048/4096/8192."
1952 rx_frag_size = 2048;
1954 /* Ensure rx_frag_size is aligned to chache line */
1955 if (SKB_DATA_ALIGN(rx_frag_size) != rx_frag_size) {
1956 printk(KERN_WARNING DRV_NAME
1957 " : Bad module param rx_frag_size. Using 2048\n");
1958 rx_frag_size = 2048;
1961 return pci_register_driver(&be_driver);
1963 module_init(be_init_module);
1965 static void __exit be_exit_module(void)
1967 pci_unregister_driver(&be_driver);
1969 module_exit(be_exit_module);