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, OC_DEVICE_ID1) },
35 { PCI_DEVICE(BE_VENDOR_ID, OC_DEVICE_ID2) },
38 MODULE_DEVICE_TABLE(pci, be_dev_ids);
40 static void be_queue_free(struct be_adapter *adapter, struct be_queue_info *q)
42 struct be_dma_mem *mem = &q->dma_mem;
44 pci_free_consistent(adapter->pdev, mem->size,
48 static int be_queue_alloc(struct be_adapter *adapter, struct be_queue_info *q,
49 u16 len, u16 entry_size)
51 struct be_dma_mem *mem = &q->dma_mem;
53 memset(q, 0, sizeof(*q));
55 q->entry_size = entry_size;
56 mem->size = len * entry_size;
57 mem->va = pci_alloc_consistent(adapter->pdev, mem->size, &mem->dma);
60 memset(mem->va, 0, mem->size);
64 static void be_intr_set(struct be_adapter *adapter, bool enable)
66 u8 __iomem *addr = adapter->pcicfg + PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET;
67 u32 reg = ioread32(addr);
68 u32 enabled = reg & MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
70 if (!enabled && enable)
71 reg |= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
72 else if (enabled && !enable)
73 reg &= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK;
80 static void be_rxq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
83 val |= qid & DB_RQ_RING_ID_MASK;
84 val |= posted << DB_RQ_NUM_POSTED_SHIFT;
85 iowrite32(val, adapter->db + DB_RQ_OFFSET);
88 static void be_txq_notify(struct be_adapter *adapter, u16 qid, u16 posted)
91 val |= qid & DB_TXULP_RING_ID_MASK;
92 val |= (posted & DB_TXULP_NUM_POSTED_MASK) << DB_TXULP_NUM_POSTED_SHIFT;
93 iowrite32(val, adapter->db + DB_TXULP1_OFFSET);
96 static void be_eq_notify(struct be_adapter *adapter, u16 qid,
97 bool arm, bool clear_int, u16 num_popped)
100 val |= qid & DB_EQ_RING_ID_MASK;
102 val |= 1 << DB_EQ_REARM_SHIFT;
104 val |= 1 << DB_EQ_CLR_SHIFT;
105 val |= 1 << DB_EQ_EVNT_SHIFT;
106 val |= num_popped << DB_EQ_NUM_POPPED_SHIFT;
107 iowrite32(val, adapter->db + DB_EQ_OFFSET);
110 void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm, u16 num_popped)
113 val |= qid & DB_CQ_RING_ID_MASK;
115 val |= 1 << DB_CQ_REARM_SHIFT;
116 val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
117 iowrite32(val, adapter->db + DB_CQ_OFFSET);
120 static int be_mac_addr_set(struct net_device *netdev, void *p)
122 struct be_adapter *adapter = netdev_priv(netdev);
123 struct sockaddr *addr = p;
126 status = be_cmd_pmac_del(adapter, adapter->if_handle, adapter->pmac_id);
130 status = be_cmd_pmac_add(adapter, (u8 *)addr->sa_data,
131 adapter->if_handle, &adapter->pmac_id);
133 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
138 void netdev_stats_update(struct be_adapter *adapter)
140 struct be_hw_stats *hw_stats = hw_stats_from_cmd(adapter->stats.cmd.va);
141 struct be_rxf_stats *rxf_stats = &hw_stats->rxf;
142 struct be_port_rxf_stats *port_stats =
143 &rxf_stats->port[adapter->port_num];
144 struct net_device_stats *dev_stats = &adapter->netdev->stats;
145 struct be_erx_stats *erx_stats = &hw_stats->erx;
147 dev_stats->rx_packets = port_stats->rx_total_frames;
148 dev_stats->tx_packets = port_stats->tx_unicastframes +
149 port_stats->tx_multicastframes + port_stats->tx_broadcastframes;
150 dev_stats->rx_bytes = (u64) port_stats->rx_bytes_msd << 32 |
151 (u64) port_stats->rx_bytes_lsd;
152 dev_stats->tx_bytes = (u64) port_stats->tx_bytes_msd << 32 |
153 (u64) port_stats->tx_bytes_lsd;
155 /* bad pkts received */
156 dev_stats->rx_errors = port_stats->rx_crc_errors +
157 port_stats->rx_alignment_symbol_errors +
158 port_stats->rx_in_range_errors +
159 port_stats->rx_out_range_errors +
160 port_stats->rx_frame_too_long +
161 port_stats->rx_dropped_too_small +
162 port_stats->rx_dropped_too_short +
163 port_stats->rx_dropped_header_too_small +
164 port_stats->rx_dropped_tcp_length +
165 port_stats->rx_dropped_runt +
166 port_stats->rx_tcp_checksum_errs +
167 port_stats->rx_ip_checksum_errs +
168 port_stats->rx_udp_checksum_errs;
170 /* no space in linux buffers: best possible approximation */
171 dev_stats->rx_dropped = erx_stats->rx_drops_no_fragments[0];
173 /* detailed rx errors */
174 dev_stats->rx_length_errors = port_stats->rx_in_range_errors +
175 port_stats->rx_out_range_errors +
176 port_stats->rx_frame_too_long;
178 /* receive ring buffer overflow */
179 dev_stats->rx_over_errors = 0;
181 dev_stats->rx_crc_errors = port_stats->rx_crc_errors;
183 /* frame alignment errors */
184 dev_stats->rx_frame_errors = port_stats->rx_alignment_symbol_errors;
186 /* receiver fifo overrun */
187 /* drops_no_pbuf is no per i/f, it's per BE card */
188 dev_stats->rx_fifo_errors = port_stats->rx_fifo_overflow +
189 port_stats->rx_input_fifo_overflow +
190 rxf_stats->rx_drops_no_pbuf;
191 /* receiver missed packetd */
192 dev_stats->rx_missed_errors = 0;
194 /* packet transmit problems */
195 dev_stats->tx_errors = 0;
197 /* no space available in linux */
198 dev_stats->tx_dropped = 0;
200 dev_stats->multicast = port_stats->rx_multicast_frames;
201 dev_stats->collisions = 0;
203 /* detailed tx_errors */
204 dev_stats->tx_aborted_errors = 0;
205 dev_stats->tx_carrier_errors = 0;
206 dev_stats->tx_fifo_errors = 0;
207 dev_stats->tx_heartbeat_errors = 0;
208 dev_stats->tx_window_errors = 0;
211 void be_link_status_update(struct be_adapter *adapter, bool link_up)
213 struct net_device *netdev = adapter->netdev;
215 /* If link came up or went down */
216 if (adapter->link_up != link_up) {
218 netif_start_queue(netdev);
219 netif_carrier_on(netdev);
220 printk(KERN_INFO "%s: Link up\n", netdev->name);
222 netif_stop_queue(netdev);
223 netif_carrier_off(netdev);
224 printk(KERN_INFO "%s: Link down\n", netdev->name);
226 adapter->link_up = link_up;
230 /* Update the EQ delay n BE based on the RX frags consumed / sec */
231 static void be_rx_eqd_update(struct be_adapter *adapter)
233 struct be_eq_obj *rx_eq = &adapter->rx_eq;
234 struct be_drvr_stats *stats = &adapter->stats.drvr_stats;
238 if (!rx_eq->enable_aic)
242 if (time_before(now, stats->rx_fps_jiffies)) {
243 stats->rx_fps_jiffies = now;
247 /* Update once a second */
248 if ((now - stats->rx_fps_jiffies) < HZ)
251 stats->be_rx_fps = (stats->be_rx_frags - stats->be_prev_rx_frags) /
252 ((now - stats->rx_fps_jiffies) / HZ);
254 stats->rx_fps_jiffies = now;
255 stats->be_prev_rx_frags = stats->be_rx_frags;
256 eqd = stats->be_rx_fps / 110000;
258 if (eqd > rx_eq->max_eqd)
259 eqd = rx_eq->max_eqd;
260 if (eqd < rx_eq->min_eqd)
261 eqd = rx_eq->min_eqd;
264 if (eqd != rx_eq->cur_eqd)
265 be_cmd_modify_eqd(adapter, rx_eq->q.id, eqd);
267 rx_eq->cur_eqd = eqd;
270 static struct net_device_stats *be_get_stats(struct net_device *dev)
275 static u32 be_calc_rate(u64 bytes, unsigned long ticks)
279 do_div(rate, ticks / HZ);
280 rate <<= 3; /* bytes/sec -> bits/sec */
281 do_div(rate, 1000000ul); /* MB/Sec */
286 static void be_tx_rate_update(struct be_adapter *adapter)
288 struct be_drvr_stats *stats = drvr_stats(adapter);
291 /* Wrapped around? */
292 if (time_before(now, stats->be_tx_jiffies)) {
293 stats->be_tx_jiffies = now;
297 /* Update tx rate once in two seconds */
298 if ((now - stats->be_tx_jiffies) > 2 * HZ) {
299 stats->be_tx_rate = be_calc_rate(stats->be_tx_bytes
300 - stats->be_tx_bytes_prev,
301 now - stats->be_tx_jiffies);
302 stats->be_tx_jiffies = now;
303 stats->be_tx_bytes_prev = stats->be_tx_bytes;
307 static void be_tx_stats_update(struct be_adapter *adapter,
308 u32 wrb_cnt, u32 copied, bool stopped)
310 struct be_drvr_stats *stats = drvr_stats(adapter);
312 stats->be_tx_wrbs += wrb_cnt;
313 stats->be_tx_bytes += copied;
315 stats->be_tx_stops++;
318 /* Determine number of WRB entries needed to xmit data in an skb */
319 static u32 wrb_cnt_for_skb(struct sk_buff *skb, bool *dummy)
321 int cnt = (skb->len > skb->data_len);
323 cnt += skb_shinfo(skb)->nr_frags;
325 /* to account for hdr wrb */
328 /* add a dummy to make it an even num */
333 BUG_ON(cnt > BE_MAX_TX_FRAG_COUNT);
337 static inline void wrb_fill(struct be_eth_wrb *wrb, u64 addr, int len)
339 wrb->frag_pa_hi = upper_32_bits(addr);
340 wrb->frag_pa_lo = addr & 0xFFFFFFFF;
341 wrb->frag_len = len & ETH_WRB_FRAG_LEN_MASK;
344 static void wrb_fill_hdr(struct be_eth_hdr_wrb *hdr, struct sk_buff *skb,
345 bool vlan, u32 wrb_cnt, u32 len)
347 memset(hdr, 0, sizeof(*hdr));
349 AMAP_SET_BITS(struct amap_eth_hdr_wrb, crc, hdr, 1);
351 if (skb_shinfo(skb)->gso_segs > 1 && skb_shinfo(skb)->gso_size) {
352 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso, hdr, 1);
353 AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso_mss,
354 hdr, skb_shinfo(skb)->gso_size);
355 } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
357 AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1);
358 else if (is_udp_pkt(skb))
359 AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1);
362 if (vlan && vlan_tx_tag_present(skb)) {
363 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan, hdr, 1);
364 AMAP_SET_BITS(struct amap_eth_hdr_wrb, vlan_tag,
365 hdr, vlan_tx_tag_get(skb));
368 AMAP_SET_BITS(struct amap_eth_hdr_wrb, event, hdr, 1);
369 AMAP_SET_BITS(struct amap_eth_hdr_wrb, complete, hdr, 1);
370 AMAP_SET_BITS(struct amap_eth_hdr_wrb, num_wrb, hdr, wrb_cnt);
371 AMAP_SET_BITS(struct amap_eth_hdr_wrb, len, hdr, len);
375 static int make_tx_wrbs(struct be_adapter *adapter,
376 struct sk_buff *skb, u32 wrb_cnt, bool dummy_wrb)
380 struct pci_dev *pdev = adapter->pdev;
381 struct sk_buff *first_skb = skb;
382 struct be_queue_info *txq = &adapter->tx_obj.q;
383 struct be_eth_wrb *wrb;
384 struct be_eth_hdr_wrb *hdr;
386 hdr = queue_head_node(txq);
387 atomic_add(wrb_cnt, &txq->used);
390 if (skb_dma_map(&pdev->dev, skb, DMA_TO_DEVICE)) {
391 dev_err(&pdev->dev, "TX DMA mapping failed\n");
395 if (skb->len > skb->data_len) {
396 int len = skb->len - skb->data_len;
397 wrb = queue_head_node(txq);
398 busaddr = skb_shinfo(skb)->dma_head;
399 wrb_fill(wrb, busaddr, len);
400 be_dws_cpu_to_le(wrb, sizeof(*wrb));
405 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
406 struct skb_frag_struct *frag =
407 &skb_shinfo(skb)->frags[i];
409 busaddr = skb_shinfo(skb)->dma_maps[i];
410 wrb = queue_head_node(txq);
411 wrb_fill(wrb, busaddr, frag->size);
412 be_dws_cpu_to_le(wrb, sizeof(*wrb));
414 copied += frag->size;
418 wrb = queue_head_node(txq);
420 be_dws_cpu_to_le(wrb, sizeof(*wrb));
424 wrb_fill_hdr(hdr, first_skb, adapter->vlan_grp ? true : false,
426 be_dws_cpu_to_le(hdr, sizeof(*hdr));
431 static netdev_tx_t be_xmit(struct sk_buff *skb,
432 struct net_device *netdev)
434 struct be_adapter *adapter = netdev_priv(netdev);
435 struct be_tx_obj *tx_obj = &adapter->tx_obj;
436 struct be_queue_info *txq = &tx_obj->q;
437 u32 wrb_cnt = 0, copied = 0;
438 u32 start = txq->head;
439 bool dummy_wrb, stopped = false;
441 wrb_cnt = wrb_cnt_for_skb(skb, &dummy_wrb);
443 copied = make_tx_wrbs(adapter, skb, wrb_cnt, dummy_wrb);
445 /* record the sent skb in the sent_skb table */
446 BUG_ON(tx_obj->sent_skb_list[start]);
447 tx_obj->sent_skb_list[start] = skb;
449 /* Ensure txq has space for the next skb; Else stop the queue
450 * *BEFORE* ringing the tx doorbell, so that we serialze the
451 * tx compls of the current transmit which'll wake up the queue
453 if ((BE_MAX_TX_FRAG_COUNT + atomic_read(&txq->used)) >=
455 netif_stop_queue(netdev);
459 be_txq_notify(adapter, txq->id, wrb_cnt);
461 be_tx_stats_update(adapter, wrb_cnt, copied, stopped);
464 dev_kfree_skb_any(skb);
469 static int be_change_mtu(struct net_device *netdev, int new_mtu)
471 struct be_adapter *adapter = netdev_priv(netdev);
472 if (new_mtu < BE_MIN_MTU ||
473 new_mtu > BE_MAX_JUMBO_FRAME_SIZE) {
474 dev_info(&adapter->pdev->dev,
475 "MTU must be between %d and %d bytes\n",
476 BE_MIN_MTU, BE_MAX_JUMBO_FRAME_SIZE);
479 dev_info(&adapter->pdev->dev, "MTU changed from %d to %d bytes\n",
480 netdev->mtu, new_mtu);
481 netdev->mtu = new_mtu;
486 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
487 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
488 * set the BE in promiscuous VLAN mode.
490 static int be_vid_config(struct be_adapter *adapter)
492 u16 vtag[BE_NUM_VLANS_SUPPORTED];
496 if (adapter->num_vlans <= BE_NUM_VLANS_SUPPORTED) {
497 /* Construct VLAN Table to give to HW */
498 for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
499 if (adapter->vlan_tag[i]) {
500 vtag[ntags] = cpu_to_le16(i);
504 status = be_cmd_vlan_config(adapter, adapter->if_handle,
507 status = be_cmd_vlan_config(adapter, adapter->if_handle,
513 static void be_vlan_register(struct net_device *netdev, struct vlan_group *grp)
515 struct be_adapter *adapter = netdev_priv(netdev);
516 struct be_eq_obj *rx_eq = &adapter->rx_eq;
517 struct be_eq_obj *tx_eq = &adapter->tx_eq;
519 be_eq_notify(adapter, rx_eq->q.id, false, false, 0);
520 be_eq_notify(adapter, tx_eq->q.id, false, false, 0);
521 adapter->vlan_grp = grp;
522 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
523 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
526 static void be_vlan_add_vid(struct net_device *netdev, u16 vid)
528 struct be_adapter *adapter = netdev_priv(netdev);
530 adapter->num_vlans++;
531 adapter->vlan_tag[vid] = 1;
533 be_vid_config(adapter);
536 static void be_vlan_rem_vid(struct net_device *netdev, u16 vid)
538 struct be_adapter *adapter = netdev_priv(netdev);
540 adapter->num_vlans--;
541 adapter->vlan_tag[vid] = 0;
543 vlan_group_set_device(adapter->vlan_grp, vid, NULL);
544 be_vid_config(adapter);
547 static void be_set_multicast_list(struct net_device *netdev)
549 struct be_adapter *adapter = netdev_priv(netdev);
551 if (netdev->flags & IFF_PROMISC) {
552 be_cmd_promiscuous_config(adapter, adapter->port_num, 1);
553 adapter->promiscuous = true;
557 /* BE was previously in promiscous mode; disable it */
558 if (adapter->promiscuous) {
559 adapter->promiscuous = false;
560 be_cmd_promiscuous_config(adapter, adapter->port_num, 0);
563 if (netdev->flags & IFF_ALLMULTI) {
564 be_cmd_multicast_set(adapter, adapter->if_handle, NULL, 0);
568 be_cmd_multicast_set(adapter, adapter->if_handle, netdev->mc_list,
574 static void be_rx_rate_update(struct be_adapter *adapter)
576 struct be_drvr_stats *stats = drvr_stats(adapter);
580 if (time_before(now, stats->be_rx_jiffies)) {
581 stats->be_rx_jiffies = now;
585 /* Update the rate once in two seconds */
586 if ((now - stats->be_rx_jiffies) < 2 * HZ)
589 stats->be_rx_rate = be_calc_rate(stats->be_rx_bytes
590 - stats->be_rx_bytes_prev,
591 now - stats->be_rx_jiffies);
592 stats->be_rx_jiffies = now;
593 stats->be_rx_bytes_prev = stats->be_rx_bytes;
596 static void be_rx_stats_update(struct be_adapter *adapter,
597 u32 pktsize, u16 numfrags)
599 struct be_drvr_stats *stats = drvr_stats(adapter);
601 stats->be_rx_compl++;
602 stats->be_rx_frags += numfrags;
603 stats->be_rx_bytes += pktsize;
606 static inline bool do_pkt_csum(struct be_eth_rx_compl *rxcp, bool cso)
608 u8 l4_cksm, ip_version, ipcksm, tcpf = 0, udpf = 0, ipv6_chk;
610 l4_cksm = AMAP_GET_BITS(struct amap_eth_rx_compl, l4_cksm, rxcp);
611 ipcksm = AMAP_GET_BITS(struct amap_eth_rx_compl, ipcksm, rxcp);
612 ip_version = AMAP_GET_BITS(struct amap_eth_rx_compl, ip_version, rxcp);
614 tcpf = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
615 udpf = AMAP_GET_BITS(struct amap_eth_rx_compl, udpf, rxcp);
617 ipv6_chk = (ip_version && (tcpf || udpf));
619 return ((l4_cksm && ipv6_chk && ipcksm) && cso) ? false : true;
622 static struct be_rx_page_info *
623 get_rx_page_info(struct be_adapter *adapter, u16 frag_idx)
625 struct be_rx_page_info *rx_page_info;
626 struct be_queue_info *rxq = &adapter->rx_obj.q;
628 rx_page_info = &adapter->rx_obj.page_info_tbl[frag_idx];
629 BUG_ON(!rx_page_info->page);
631 if (rx_page_info->last_page_user)
632 pci_unmap_page(adapter->pdev, pci_unmap_addr(rx_page_info, bus),
633 adapter->big_page_size, PCI_DMA_FROMDEVICE);
635 atomic_dec(&rxq->used);
639 /* Throwaway the data in the Rx completion */
640 static void be_rx_compl_discard(struct be_adapter *adapter,
641 struct be_eth_rx_compl *rxcp)
643 struct be_queue_info *rxq = &adapter->rx_obj.q;
644 struct be_rx_page_info *page_info;
645 u16 rxq_idx, i, num_rcvd;
647 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
648 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
650 for (i = 0; i < num_rcvd; i++) {
651 page_info = get_rx_page_info(adapter, rxq_idx);
652 put_page(page_info->page);
653 memset(page_info, 0, sizeof(*page_info));
654 index_inc(&rxq_idx, rxq->len);
659 * skb_fill_rx_data forms a complete skb for an ether frame
662 static void skb_fill_rx_data(struct be_adapter *adapter,
663 struct sk_buff *skb, struct be_eth_rx_compl *rxcp)
665 struct be_queue_info *rxq = &adapter->rx_obj.q;
666 struct be_rx_page_info *page_info;
667 u16 rxq_idx, i, num_rcvd, j;
668 u32 pktsize, hdr_len, curr_frag_len, size;
671 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
672 pktsize = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
673 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
675 page_info = get_rx_page_info(adapter, rxq_idx);
677 start = page_address(page_info->page) + page_info->page_offset;
680 /* Copy data in the first descriptor of this completion */
681 curr_frag_len = min(pktsize, rx_frag_size);
683 /* Copy the header portion into skb_data */
684 hdr_len = min((u32)BE_HDR_LEN, curr_frag_len);
685 memcpy(skb->data, start, hdr_len);
686 skb->len = curr_frag_len;
687 if (curr_frag_len <= BE_HDR_LEN) { /* tiny packet */
688 /* Complete packet has now been moved to data */
689 put_page(page_info->page);
691 skb->tail += curr_frag_len;
693 skb_shinfo(skb)->nr_frags = 1;
694 skb_shinfo(skb)->frags[0].page = page_info->page;
695 skb_shinfo(skb)->frags[0].page_offset =
696 page_info->page_offset + hdr_len;
697 skb_shinfo(skb)->frags[0].size = curr_frag_len - hdr_len;
698 skb->data_len = curr_frag_len - hdr_len;
699 skb->tail += hdr_len;
701 memset(page_info, 0, sizeof(*page_info));
703 if (pktsize <= rx_frag_size) {
704 BUG_ON(num_rcvd != 1);
708 /* More frags present for this completion */
710 for (i = 1, j = 0; i < num_rcvd; i++) {
711 size -= curr_frag_len;
712 index_inc(&rxq_idx, rxq->len);
713 page_info = get_rx_page_info(adapter, rxq_idx);
715 curr_frag_len = min(size, rx_frag_size);
717 /* Coalesce all frags from the same physical page in one slot */
718 if (page_info->page_offset == 0) {
721 skb_shinfo(skb)->frags[j].page = page_info->page;
722 skb_shinfo(skb)->frags[j].page_offset =
723 page_info->page_offset;
724 skb_shinfo(skb)->frags[j].size = 0;
725 skb_shinfo(skb)->nr_frags++;
727 put_page(page_info->page);
730 skb_shinfo(skb)->frags[j].size += curr_frag_len;
731 skb->len += curr_frag_len;
732 skb->data_len += curr_frag_len;
734 memset(page_info, 0, sizeof(*page_info));
736 BUG_ON(j > MAX_SKB_FRAGS);
739 be_rx_stats_update(adapter, pktsize, num_rcvd);
743 /* Process the RX completion indicated by rxcp when GRO is disabled */
744 static void be_rx_compl_process(struct be_adapter *adapter,
745 struct be_eth_rx_compl *rxcp)
751 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
752 vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
754 /* vlanf could be wrongly set in some cards.
755 * ignore if vtm is not set */
756 if ((adapter->cap == 0x400) && !vtm)
759 skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
762 dev_warn(&adapter->pdev->dev, "skb alloc failed\n");
763 be_rx_compl_discard(adapter, rxcp);
767 skb_fill_rx_data(adapter, skb, rxcp);
769 if (do_pkt_csum(rxcp, adapter->rx_csum))
770 skb->ip_summed = CHECKSUM_NONE;
772 skb->ip_summed = CHECKSUM_UNNECESSARY;
774 skb->truesize = skb->len + sizeof(struct sk_buff);
775 skb->protocol = eth_type_trans(skb, adapter->netdev);
776 skb->dev = adapter->netdev;
779 if (!adapter->vlan_grp || adapter->num_vlans == 0) {
783 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
784 vid = be16_to_cpu(vid);
785 vlan_hwaccel_receive_skb(skb, adapter->vlan_grp, vid);
787 netif_receive_skb(skb);
793 /* Process the RX completion indicated by rxcp when GRO is enabled */
794 static void be_rx_compl_process_gro(struct be_adapter *adapter,
795 struct be_eth_rx_compl *rxcp)
797 struct be_rx_page_info *page_info;
798 struct sk_buff *skb = NULL;
799 struct be_queue_info *rxq = &adapter->rx_obj.q;
800 struct be_eq_obj *eq_obj = &adapter->rx_eq;
801 u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len;
802 u16 i, rxq_idx = 0, vid, j;
805 num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
806 pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
807 vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
808 rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
809 vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp);
811 /* vlanf could be wrongly set in some cards.
812 * ignore if vtm is not set */
813 if ((adapter->cap == 0x400) && !vtm)
816 skb = napi_get_frags(&eq_obj->napi);
818 be_rx_compl_discard(adapter, rxcp);
822 remaining = pkt_size;
823 for (i = 0, j = -1; i < num_rcvd; i++) {
824 page_info = get_rx_page_info(adapter, rxq_idx);
826 curr_frag_len = min(remaining, rx_frag_size);
828 /* Coalesce all frags from the same physical page in one slot */
829 if (i == 0 || page_info->page_offset == 0) {
830 /* First frag or Fresh page */
832 skb_shinfo(skb)->frags[j].page = page_info->page;
833 skb_shinfo(skb)->frags[j].page_offset =
834 page_info->page_offset;
835 skb_shinfo(skb)->frags[j].size = 0;
837 put_page(page_info->page);
839 skb_shinfo(skb)->frags[j].size += curr_frag_len;
841 remaining -= curr_frag_len;
842 index_inc(&rxq_idx, rxq->len);
843 memset(page_info, 0, sizeof(*page_info));
845 BUG_ON(j > MAX_SKB_FRAGS);
847 skb_shinfo(skb)->nr_frags = j + 1;
849 skb->data_len = pkt_size;
850 skb->truesize += pkt_size;
851 skb->ip_summed = CHECKSUM_UNNECESSARY;
853 if (likely(!vlanf)) {
854 napi_gro_frags(&eq_obj->napi);
856 vid = AMAP_GET_BITS(struct amap_eth_rx_compl, vlan_tag, rxcp);
857 vid = be16_to_cpu(vid);
859 if (!adapter->vlan_grp || adapter->num_vlans == 0)
862 vlan_gro_frags(&eq_obj->napi, adapter->vlan_grp, vid);
865 be_rx_stats_update(adapter, pkt_size, num_rcvd);
869 static struct be_eth_rx_compl *be_rx_compl_get(struct be_adapter *adapter)
871 struct be_eth_rx_compl *rxcp = queue_tail_node(&adapter->rx_obj.cq);
873 if (rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] == 0)
876 be_dws_le_to_cpu(rxcp, sizeof(*rxcp));
878 queue_tail_inc(&adapter->rx_obj.cq);
882 /* To reset the valid bit, we need to reset the whole word as
883 * when walking the queue the valid entries are little-endian
884 * and invalid entries are host endian
886 static inline void be_rx_compl_reset(struct be_eth_rx_compl *rxcp)
888 rxcp->dw[offsetof(struct amap_eth_rx_compl, valid) / 32] = 0;
891 static inline struct page *be_alloc_pages(u32 size)
893 gfp_t alloc_flags = GFP_ATOMIC;
894 u32 order = get_order(size);
896 alloc_flags |= __GFP_COMP;
897 return alloc_pages(alloc_flags, order);
901 * Allocate a page, split it to fragments of size rx_frag_size and post as
902 * receive buffers to BE
904 static void be_post_rx_frags(struct be_adapter *adapter)
906 struct be_rx_page_info *page_info_tbl = adapter->rx_obj.page_info_tbl;
907 struct be_rx_page_info *page_info = NULL;
908 struct be_queue_info *rxq = &adapter->rx_obj.q;
909 struct page *pagep = NULL;
910 struct be_eth_rx_d *rxd;
911 u64 page_dmaaddr = 0, frag_dmaaddr;
912 u32 posted, page_offset = 0;
914 page_info = &page_info_tbl[rxq->head];
915 for (posted = 0; posted < MAX_RX_POST && !page_info->page; posted++) {
917 pagep = be_alloc_pages(adapter->big_page_size);
918 if (unlikely(!pagep)) {
919 drvr_stats(adapter)->be_ethrx_post_fail++;
922 page_dmaaddr = pci_map_page(adapter->pdev, pagep, 0,
923 adapter->big_page_size,
925 page_info->page_offset = 0;
928 page_info->page_offset = page_offset + rx_frag_size;
930 page_offset = page_info->page_offset;
931 page_info->page = pagep;
932 pci_unmap_addr_set(page_info, bus, page_dmaaddr);
933 frag_dmaaddr = page_dmaaddr + page_info->page_offset;
935 rxd = queue_head_node(rxq);
936 rxd->fragpa_lo = cpu_to_le32(frag_dmaaddr & 0xFFFFFFFF);
937 rxd->fragpa_hi = cpu_to_le32(upper_32_bits(frag_dmaaddr));
940 /* Any space left in the current big page for another frag? */
941 if ((page_offset + rx_frag_size + rx_frag_size) >
942 adapter->big_page_size) {
944 page_info->last_page_user = true;
946 page_info = &page_info_tbl[rxq->head];
949 page_info->last_page_user = true;
952 atomic_add(posted, &rxq->used);
953 be_rxq_notify(adapter, rxq->id, posted);
954 } else if (atomic_read(&rxq->used) == 0) {
955 /* Let be_worker replenish when memory is available */
956 adapter->rx_post_starved = true;
962 static struct be_eth_tx_compl *be_tx_compl_get(struct be_queue_info *tx_cq)
964 struct be_eth_tx_compl *txcp = queue_tail_node(tx_cq);
966 if (txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] == 0)
969 be_dws_le_to_cpu(txcp, sizeof(*txcp));
971 txcp->dw[offsetof(struct amap_eth_tx_compl, valid) / 32] = 0;
973 queue_tail_inc(tx_cq);
977 static void be_tx_compl_process(struct be_adapter *adapter, u16 last_index)
979 struct be_queue_info *txq = &adapter->tx_obj.q;
980 struct sk_buff **sent_skbs = adapter->tx_obj.sent_skb_list;
981 struct sk_buff *sent_skb;
982 u16 cur_index, num_wrbs = 0;
984 cur_index = txq->tail;
985 sent_skb = sent_skbs[cur_index];
987 sent_skbs[cur_index] = NULL;
990 cur_index = txq->tail;
993 } while (cur_index != last_index);
995 atomic_sub(num_wrbs, &txq->used);
996 skb_dma_unmap(&adapter->pdev->dev, sent_skb, DMA_TO_DEVICE);
1000 static inline struct be_eq_entry *event_get(struct be_eq_obj *eq_obj)
1002 struct be_eq_entry *eqe = queue_tail_node(&eq_obj->q);
1007 eqe->evt = le32_to_cpu(eqe->evt);
1008 queue_tail_inc(&eq_obj->q);
1012 static int event_handle(struct be_adapter *adapter,
1013 struct be_eq_obj *eq_obj)
1015 struct be_eq_entry *eqe;
1018 while ((eqe = event_get(eq_obj)) != NULL) {
1023 /* Deal with any spurious interrupts that come
1026 be_eq_notify(adapter, eq_obj->q.id, true, true, num);
1028 napi_schedule(&eq_obj->napi);
1033 /* Just read and notify events without processing them.
1034 * Used at the time of destroying event queues */
1035 static void be_eq_clean(struct be_adapter *adapter,
1036 struct be_eq_obj *eq_obj)
1038 struct be_eq_entry *eqe;
1041 while ((eqe = event_get(eq_obj)) != NULL) {
1047 be_eq_notify(adapter, eq_obj->q.id, false, true, num);
1050 static void be_rx_q_clean(struct be_adapter *adapter)
1052 struct be_rx_page_info *page_info;
1053 struct be_queue_info *rxq = &adapter->rx_obj.q;
1054 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1055 struct be_eth_rx_compl *rxcp;
1058 /* First cleanup pending rx completions */
1059 while ((rxcp = be_rx_compl_get(adapter)) != NULL) {
1060 be_rx_compl_discard(adapter, rxcp);
1061 be_rx_compl_reset(rxcp);
1062 be_cq_notify(adapter, rx_cq->id, true, 1);
1065 /* Then free posted rx buffer that were not used */
1066 tail = (rxq->head + rxq->len - atomic_read(&rxq->used)) % rxq->len;
1067 for (; atomic_read(&rxq->used) > 0; index_inc(&tail, rxq->len)) {
1068 page_info = get_rx_page_info(adapter, tail);
1069 put_page(page_info->page);
1070 memset(page_info, 0, sizeof(*page_info));
1072 BUG_ON(atomic_read(&rxq->used));
1075 static void be_tx_compl_clean(struct be_adapter *adapter)
1077 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1078 struct be_queue_info *txq = &adapter->tx_obj.q;
1079 struct be_eth_tx_compl *txcp;
1080 u16 end_idx, cmpl = 0, timeo = 0;
1082 /* Wait for a max of 200ms for all the tx-completions to arrive. */
1084 while ((txcp = be_tx_compl_get(tx_cq))) {
1085 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1087 be_tx_compl_process(adapter, end_idx);
1091 be_cq_notify(adapter, tx_cq->id, false, cmpl);
1095 if (atomic_read(&txq->used) == 0 || ++timeo > 200)
1101 if (atomic_read(&txq->used))
1102 dev_err(&adapter->pdev->dev, "%d pending tx-completions\n",
1103 atomic_read(&txq->used));
1106 static void be_mcc_queues_destroy(struct be_adapter *adapter)
1108 struct be_queue_info *q;
1110 q = &adapter->mcc_obj.q;
1112 be_cmd_q_destroy(adapter, q, QTYPE_MCCQ);
1113 be_queue_free(adapter, q);
1115 q = &adapter->mcc_obj.cq;
1117 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1118 be_queue_free(adapter, q);
1121 /* Must be called only after TX qs are created as MCC shares TX EQ */
1122 static int be_mcc_queues_create(struct be_adapter *adapter)
1124 struct be_queue_info *q, *cq;
1126 /* Alloc MCC compl queue */
1127 cq = &adapter->mcc_obj.cq;
1128 if (be_queue_alloc(adapter, cq, MCC_CQ_LEN,
1129 sizeof(struct be_mcc_compl)))
1132 /* Ask BE to create MCC compl queue; share TX's eq */
1133 if (be_cmd_cq_create(adapter, cq, &adapter->tx_eq.q, false, true, 0))
1136 /* Alloc MCC queue */
1137 q = &adapter->mcc_obj.q;
1138 if (be_queue_alloc(adapter, q, MCC_Q_LEN, sizeof(struct be_mcc_wrb)))
1139 goto mcc_cq_destroy;
1141 /* Ask BE to create MCC queue */
1142 if (be_cmd_mccq_create(adapter, q, cq))
1148 be_queue_free(adapter, q);
1150 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1152 be_queue_free(adapter, cq);
1157 static void be_tx_queues_destroy(struct be_adapter *adapter)
1159 struct be_queue_info *q;
1161 q = &adapter->tx_obj.q;
1163 be_cmd_q_destroy(adapter, q, QTYPE_TXQ);
1164 be_queue_free(adapter, q);
1166 q = &adapter->tx_obj.cq;
1168 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1169 be_queue_free(adapter, q);
1171 /* Clear any residual events */
1172 be_eq_clean(adapter, &adapter->tx_eq);
1174 q = &adapter->tx_eq.q;
1176 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1177 be_queue_free(adapter, q);
1180 static int be_tx_queues_create(struct be_adapter *adapter)
1182 struct be_queue_info *eq, *q, *cq;
1184 adapter->tx_eq.max_eqd = 0;
1185 adapter->tx_eq.min_eqd = 0;
1186 adapter->tx_eq.cur_eqd = 96;
1187 adapter->tx_eq.enable_aic = false;
1188 /* Alloc Tx Event queue */
1189 eq = &adapter->tx_eq.q;
1190 if (be_queue_alloc(adapter, eq, EVNT_Q_LEN, sizeof(struct be_eq_entry)))
1193 /* Ask BE to create Tx Event queue */
1194 if (be_cmd_eq_create(adapter, eq, adapter->tx_eq.cur_eqd))
1196 /* Alloc TX eth compl queue */
1197 cq = &adapter->tx_obj.cq;
1198 if (be_queue_alloc(adapter, cq, TX_CQ_LEN,
1199 sizeof(struct be_eth_tx_compl)))
1202 /* Ask BE to create Tx eth compl queue */
1203 if (be_cmd_cq_create(adapter, cq, eq, false, false, 3))
1206 /* Alloc TX eth queue */
1207 q = &adapter->tx_obj.q;
1208 if (be_queue_alloc(adapter, q, TX_Q_LEN, sizeof(struct be_eth_wrb)))
1211 /* Ask BE to create Tx eth queue */
1212 if (be_cmd_txq_create(adapter, q, cq))
1217 be_queue_free(adapter, q);
1219 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1221 be_queue_free(adapter, cq);
1223 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1225 be_queue_free(adapter, eq);
1229 static void be_rx_queues_destroy(struct be_adapter *adapter)
1231 struct be_queue_info *q;
1233 q = &adapter->rx_obj.q;
1235 be_cmd_q_destroy(adapter, q, QTYPE_RXQ);
1236 be_rx_q_clean(adapter);
1238 be_queue_free(adapter, q);
1240 q = &adapter->rx_obj.cq;
1242 be_cmd_q_destroy(adapter, q, QTYPE_CQ);
1243 be_queue_free(adapter, q);
1245 /* Clear any residual events */
1246 be_eq_clean(adapter, &adapter->rx_eq);
1248 q = &adapter->rx_eq.q;
1250 be_cmd_q_destroy(adapter, q, QTYPE_EQ);
1251 be_queue_free(adapter, q);
1254 static int be_rx_queues_create(struct be_adapter *adapter)
1256 struct be_queue_info *eq, *q, *cq;
1259 adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
1260 adapter->rx_eq.max_eqd = BE_MAX_EQD;
1261 adapter->rx_eq.min_eqd = 0;
1262 adapter->rx_eq.cur_eqd = 0;
1263 adapter->rx_eq.enable_aic = true;
1265 /* Alloc Rx Event queue */
1266 eq = &adapter->rx_eq.q;
1267 rc = be_queue_alloc(adapter, eq, EVNT_Q_LEN,
1268 sizeof(struct be_eq_entry));
1272 /* Ask BE to create Rx Event queue */
1273 rc = be_cmd_eq_create(adapter, eq, adapter->rx_eq.cur_eqd);
1277 /* Alloc RX eth compl queue */
1278 cq = &adapter->rx_obj.cq;
1279 rc = be_queue_alloc(adapter, cq, RX_CQ_LEN,
1280 sizeof(struct be_eth_rx_compl));
1284 /* Ask BE to create Rx eth compl queue */
1285 rc = be_cmd_cq_create(adapter, cq, eq, false, false, 3);
1289 /* Alloc RX eth queue */
1290 q = &adapter->rx_obj.q;
1291 rc = be_queue_alloc(adapter, q, RX_Q_LEN, sizeof(struct be_eth_rx_d));
1295 /* Ask BE to create Rx eth queue */
1296 rc = be_cmd_rxq_create(adapter, q, cq->id, rx_frag_size,
1297 BE_MAX_JUMBO_FRAME_SIZE, adapter->if_handle, false);
1303 be_queue_free(adapter, q);
1305 be_cmd_q_destroy(adapter, cq, QTYPE_CQ);
1307 be_queue_free(adapter, cq);
1309 be_cmd_q_destroy(adapter, eq, QTYPE_EQ);
1311 be_queue_free(adapter, eq);
1315 /* There are 8 evt ids per func. Retruns the evt id's bit number */
1316 static inline int be_evt_bit_get(struct be_adapter *adapter, u32 eq_id)
1318 return eq_id - 8 * be_pci_func(adapter);
1321 static irqreturn_t be_intx(int irq, void *dev)
1323 struct be_adapter *adapter = dev;
1326 isr = ioread32(adapter->csr + CEV_ISR0_OFFSET +
1327 be_pci_func(adapter) * CEV_ISR_SIZE);
1331 event_handle(adapter, &adapter->tx_eq);
1332 event_handle(adapter, &adapter->rx_eq);
1337 static irqreturn_t be_msix_rx(int irq, void *dev)
1339 struct be_adapter *adapter = dev;
1341 event_handle(adapter, &adapter->rx_eq);
1346 static irqreturn_t be_msix_tx_mcc(int irq, void *dev)
1348 struct be_adapter *adapter = dev;
1350 event_handle(adapter, &adapter->tx_eq);
1355 static inline bool do_gro(struct be_adapter *adapter,
1356 struct be_eth_rx_compl *rxcp)
1358 int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
1359 int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
1362 drvr_stats(adapter)->be_rxcp_err++;
1364 return (tcp_frame && !err) ? true : false;
1367 int be_poll_rx(struct napi_struct *napi, int budget)
1369 struct be_eq_obj *rx_eq = container_of(napi, struct be_eq_obj, napi);
1370 struct be_adapter *adapter =
1371 container_of(rx_eq, struct be_adapter, rx_eq);
1372 struct be_queue_info *rx_cq = &adapter->rx_obj.cq;
1373 struct be_eth_rx_compl *rxcp;
1376 for (work_done = 0; work_done < budget; work_done++) {
1377 rxcp = be_rx_compl_get(adapter);
1381 if (do_gro(adapter, rxcp))
1382 be_rx_compl_process_gro(adapter, rxcp);
1384 be_rx_compl_process(adapter, rxcp);
1386 be_rx_compl_reset(rxcp);
1389 /* Refill the queue */
1390 if (atomic_read(&adapter->rx_obj.q.used) < RX_FRAGS_REFILL_WM)
1391 be_post_rx_frags(adapter);
1394 if (work_done < budget) {
1395 napi_complete(napi);
1396 be_cq_notify(adapter, rx_cq->id, true, work_done);
1398 /* More to be consumed; continue with interrupts disabled */
1399 be_cq_notify(adapter, rx_cq->id, false, work_done);
1404 void be_process_tx(struct be_adapter *adapter)
1406 struct be_queue_info *txq = &adapter->tx_obj.q;
1407 struct be_queue_info *tx_cq = &adapter->tx_obj.cq;
1408 struct be_eth_tx_compl *txcp;
1412 while ((txcp = be_tx_compl_get(tx_cq))) {
1413 end_idx = AMAP_GET_BITS(struct amap_eth_tx_compl,
1415 be_tx_compl_process(adapter, end_idx);
1420 be_cq_notify(adapter, tx_cq->id, true, num_cmpl);
1422 /* As Tx wrbs have been freed up, wake up netdev queue if
1423 * it was stopped due to lack of tx wrbs.
1425 if (netif_queue_stopped(adapter->netdev) &&
1426 atomic_read(&txq->used) < txq->len / 2) {
1427 netif_wake_queue(adapter->netdev);
1430 drvr_stats(adapter)->be_tx_events++;
1431 drvr_stats(adapter)->be_tx_compl += num_cmpl;
1435 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1436 * For TX/MCC we don't honour budget; consume everything
1438 static int be_poll_tx_mcc(struct napi_struct *napi, int budget)
1440 struct be_eq_obj *tx_eq = container_of(napi, struct be_eq_obj, napi);
1441 struct be_adapter *adapter =
1442 container_of(tx_eq, struct be_adapter, tx_eq);
1444 napi_complete(napi);
1446 be_process_tx(adapter);
1448 be_process_mcc(adapter);
1453 static void be_worker(struct work_struct *work)
1455 struct be_adapter *adapter =
1456 container_of(work, struct be_adapter, work.work);
1458 be_cmd_get_stats(adapter, &adapter->stats.cmd);
1461 be_rx_eqd_update(adapter);
1463 be_tx_rate_update(adapter);
1464 be_rx_rate_update(adapter);
1466 if (adapter->rx_post_starved) {
1467 adapter->rx_post_starved = false;
1468 be_post_rx_frags(adapter);
1471 schedule_delayed_work(&adapter->work, msecs_to_jiffies(1000));
1474 static void be_msix_enable(struct be_adapter *adapter)
1478 for (i = 0; i < BE_NUM_MSIX_VECTORS; i++)
1479 adapter->msix_entries[i].entry = i;
1481 status = pci_enable_msix(adapter->pdev, adapter->msix_entries,
1482 BE_NUM_MSIX_VECTORS);
1484 adapter->msix_enabled = true;
1488 static inline int be_msix_vec_get(struct be_adapter *adapter, u32 eq_id)
1490 return adapter->msix_entries[
1491 be_evt_bit_get(adapter, eq_id)].vector;
1494 static int be_request_irq(struct be_adapter *adapter,
1495 struct be_eq_obj *eq_obj,
1496 void *handler, char *desc)
1498 struct net_device *netdev = adapter->netdev;
1501 sprintf(eq_obj->desc, "%s-%s", netdev->name, desc);
1502 vec = be_msix_vec_get(adapter, eq_obj->q.id);
1503 return request_irq(vec, handler, 0, eq_obj->desc, adapter);
1506 static void be_free_irq(struct be_adapter *adapter, struct be_eq_obj *eq_obj)
1508 int vec = be_msix_vec_get(adapter, eq_obj->q.id);
1509 free_irq(vec, adapter);
1512 static int be_msix_register(struct be_adapter *adapter)
1516 status = be_request_irq(adapter, &adapter->tx_eq, be_msix_tx_mcc, "tx");
1520 status = be_request_irq(adapter, &adapter->rx_eq, be_msix_rx, "rx");
1527 be_free_irq(adapter, &adapter->tx_eq);
1529 dev_warn(&adapter->pdev->dev,
1530 "MSIX Request IRQ failed - err %d\n", status);
1531 pci_disable_msix(adapter->pdev);
1532 adapter->msix_enabled = false;
1536 static int be_irq_register(struct be_adapter *adapter)
1538 struct net_device *netdev = adapter->netdev;
1541 if (adapter->msix_enabled) {
1542 status = be_msix_register(adapter);
1548 netdev->irq = adapter->pdev->irq;
1549 status = request_irq(netdev->irq, be_intx, IRQF_SHARED, netdev->name,
1552 dev_err(&adapter->pdev->dev,
1553 "INTx request IRQ failed - err %d\n", status);
1557 adapter->isr_registered = true;
1561 static void be_irq_unregister(struct be_adapter *adapter)
1563 struct net_device *netdev = adapter->netdev;
1565 if (!adapter->isr_registered)
1569 if (!adapter->msix_enabled) {
1570 free_irq(netdev->irq, adapter);
1575 be_free_irq(adapter, &adapter->tx_eq);
1576 be_free_irq(adapter, &adapter->rx_eq);
1578 adapter->isr_registered = false;
1582 static int be_open(struct net_device *netdev)
1584 struct be_adapter *adapter = netdev_priv(netdev);
1585 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1586 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1590 /* First time posting */
1591 be_post_rx_frags(adapter);
1593 napi_enable(&rx_eq->napi);
1594 napi_enable(&tx_eq->napi);
1596 be_irq_register(adapter);
1598 be_intr_set(adapter, true);
1600 /* The evt queues are created in unarmed state; arm them */
1601 be_eq_notify(adapter, rx_eq->q.id, true, false, 0);
1602 be_eq_notify(adapter, tx_eq->q.id, true, false, 0);
1604 /* Rx compl queue may be in unarmed state; rearm it */
1605 be_cq_notify(adapter, adapter->rx_obj.cq.id, true, 0);
1607 status = be_cmd_link_status_query(adapter, &link_up);
1610 be_link_status_update(adapter, link_up);
1612 schedule_delayed_work(&adapter->work, msecs_to_jiffies(100));
1616 static int be_setup(struct be_adapter *adapter)
1618 struct net_device *netdev = adapter->netdev;
1619 u32 cap_flags, en_flags;
1622 cap_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1623 BE_IF_FLAGS_MCAST_PROMISCUOUS |
1624 BE_IF_FLAGS_PROMISCUOUS |
1625 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1626 en_flags = BE_IF_FLAGS_UNTAGGED | BE_IF_FLAGS_BROADCAST |
1627 BE_IF_FLAGS_PASS_L3L4_ERRORS;
1629 status = be_cmd_if_create(adapter, cap_flags, en_flags,
1630 netdev->dev_addr, false/* pmac_invalid */,
1631 &adapter->if_handle, &adapter->pmac_id);
1635 status = be_tx_queues_create(adapter);
1639 status = be_rx_queues_create(adapter);
1643 status = be_mcc_queues_create(adapter);
1647 status = be_vid_config(adapter);
1651 status = be_cmd_set_flow_control(adapter, true, true);
1657 be_mcc_queues_destroy(adapter);
1659 be_rx_queues_destroy(adapter);
1661 be_tx_queues_destroy(adapter);
1663 be_cmd_if_destroy(adapter, adapter->if_handle);
1668 static int be_clear(struct be_adapter *adapter)
1670 be_mcc_queues_destroy(adapter);
1671 be_rx_queues_destroy(adapter);
1672 be_tx_queues_destroy(adapter);
1674 be_cmd_if_destroy(adapter, adapter->if_handle);
1679 static int be_close(struct net_device *netdev)
1681 struct be_adapter *adapter = netdev_priv(netdev);
1682 struct be_eq_obj *rx_eq = &adapter->rx_eq;
1683 struct be_eq_obj *tx_eq = &adapter->tx_eq;
1686 cancel_delayed_work_sync(&adapter->work);
1688 netif_stop_queue(netdev);
1689 netif_carrier_off(netdev);
1690 adapter->link_up = false;
1692 be_intr_set(adapter, false);
1694 if (adapter->msix_enabled) {
1695 vec = be_msix_vec_get(adapter, tx_eq->q.id);
1696 synchronize_irq(vec);
1697 vec = be_msix_vec_get(adapter, rx_eq->q.id);
1698 synchronize_irq(vec);
1700 synchronize_irq(netdev->irq);
1702 be_irq_unregister(adapter);
1704 napi_disable(&rx_eq->napi);
1705 napi_disable(&tx_eq->napi);
1707 /* Wait for all pending tx completions to arrive so that
1708 * all tx skbs are freed.
1710 be_tx_compl_clean(adapter);
1715 #define FW_FILE_HDR_SIGN "ServerEngines Corp. "
1716 char flash_cookie[2][16] = {"*** SE FLAS",
1717 "H DIRECTORY *** "};
1718 static int be_flash_image(struct be_adapter *adapter,
1719 const struct firmware *fw,
1720 struct be_dma_mem *flash_cmd, u32 flash_type)
1723 u32 flash_op, image_offset = 0, total_bytes, image_size = 0;
1725 const u8 *p = fw->data;
1726 struct be_cmd_write_flashrom *req = flash_cmd->va;
1728 switch (flash_type) {
1729 case FLASHROM_TYPE_ISCSI_ACTIVE:
1730 image_offset = FLASH_iSCSI_PRIMARY_IMAGE_START;
1731 image_size = FLASH_IMAGE_MAX_SIZE;
1733 case FLASHROM_TYPE_ISCSI_BACKUP:
1734 image_offset = FLASH_iSCSI_BACKUP_IMAGE_START;
1735 image_size = FLASH_IMAGE_MAX_SIZE;
1737 case FLASHROM_TYPE_FCOE_FW_ACTIVE:
1738 image_offset = FLASH_FCoE_PRIMARY_IMAGE_START;
1739 image_size = FLASH_IMAGE_MAX_SIZE;
1741 case FLASHROM_TYPE_FCOE_FW_BACKUP:
1742 image_offset = FLASH_FCoE_BACKUP_IMAGE_START;
1743 image_size = FLASH_IMAGE_MAX_SIZE;
1745 case FLASHROM_TYPE_BIOS:
1746 image_offset = FLASH_iSCSI_BIOS_START;
1747 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1749 case FLASHROM_TYPE_FCOE_BIOS:
1750 image_offset = FLASH_FCoE_BIOS_START;
1751 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1753 case FLASHROM_TYPE_PXE_BIOS:
1754 image_offset = FLASH_PXE_BIOS_START;
1755 image_size = FLASH_BIOS_IMAGE_MAX_SIZE;
1761 p += sizeof(struct flash_file_hdr) + image_offset;
1762 if (p + image_size > fw->data + fw->size)
1765 total_bytes = image_size;
1767 while (total_bytes) {
1768 if (total_bytes > 32*1024)
1769 num_bytes = 32*1024;
1771 num_bytes = total_bytes;
1772 total_bytes -= num_bytes;
1775 flash_op = FLASHROM_OPER_FLASH;
1777 flash_op = FLASHROM_OPER_SAVE;
1778 memcpy(req->params.data_buf, p, num_bytes);
1780 status = be_cmd_write_flashrom(adapter, flash_cmd,
1781 flash_type, flash_op, num_bytes);
1783 dev_err(&adapter->pdev->dev,
1784 "cmd to write to flash rom failed. type/op %d/%d\n",
1785 flash_type, flash_op);
1794 int be_load_fw(struct be_adapter *adapter, u8 *func)
1796 char fw_file[ETHTOOL_FLASH_MAX_FILENAME];
1797 const struct firmware *fw;
1798 struct flash_file_hdr *fhdr;
1799 struct flash_section_info *fsec = NULL;
1800 struct be_dma_mem flash_cmd;
1803 bool entry_found = false;
1805 char fw_ver[FW_VER_LEN];
1808 status = be_cmd_get_fw_ver(adapter, fw_ver);
1812 fw_cfg = *(fw_ver + 2);
1815 strcpy(fw_file, func);
1817 status = request_firmware(&fw, fw_file, &adapter->pdev->dev);
1822 fhdr = (struct flash_file_hdr *) p;
1823 if (memcmp(fhdr->sign, FW_FILE_HDR_SIGN, strlen(FW_FILE_HDR_SIGN))) {
1824 dev_err(&adapter->pdev->dev,
1825 "Firmware(%s) load error (signature did not match)\n",
1831 dev_info(&adapter->pdev->dev, "Flashing firmware file %s\n", fw_file);
1833 p += sizeof(struct flash_file_hdr);
1834 while (p < (fw->data + fw->size)) {
1835 fsec = (struct flash_section_info *)p;
1836 if (!memcmp(flash_cookie, fsec->cookie, sizeof(flash_cookie))) {
1845 dev_err(&adapter->pdev->dev,
1846 "Flash cookie not found in firmware image\n");
1850 flash_cmd.size = sizeof(struct be_cmd_write_flashrom) + 32*1024;
1851 flash_cmd.va = pci_alloc_consistent(adapter->pdev, flash_cmd.size,
1853 if (!flash_cmd.va) {
1855 dev_err(&adapter->pdev->dev,
1856 "Memory allocation failure while flashing\n");
1860 for (flash_type = FLASHROM_TYPE_ISCSI_ACTIVE;
1861 flash_type <= FLASHROM_TYPE_FCOE_FW_BACKUP; flash_type++) {
1862 status = be_flash_image(adapter, fw, &flash_cmd,
1868 pci_free_consistent(adapter->pdev, flash_cmd.size, flash_cmd.va,
1871 dev_err(&adapter->pdev->dev, "Firmware load error\n");
1875 dev_info(&adapter->pdev->dev, "Firmware flashed succesfully\n");
1878 release_firmware(fw);
1882 static struct net_device_ops be_netdev_ops = {
1883 .ndo_open = be_open,
1884 .ndo_stop = be_close,
1885 .ndo_start_xmit = be_xmit,
1886 .ndo_get_stats = be_get_stats,
1887 .ndo_set_rx_mode = be_set_multicast_list,
1888 .ndo_set_mac_address = be_mac_addr_set,
1889 .ndo_change_mtu = be_change_mtu,
1890 .ndo_validate_addr = eth_validate_addr,
1891 .ndo_vlan_rx_register = be_vlan_register,
1892 .ndo_vlan_rx_add_vid = be_vlan_add_vid,
1893 .ndo_vlan_rx_kill_vid = be_vlan_rem_vid,
1896 static void be_netdev_init(struct net_device *netdev)
1898 struct be_adapter *adapter = netdev_priv(netdev);
1900 netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
1901 NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
1904 netdev->flags |= IFF_MULTICAST;
1906 adapter->rx_csum = true;
1908 netif_set_gso_max_size(netdev, 65535);
1910 BE_SET_NETDEV_OPS(netdev, &be_netdev_ops);
1912 SET_ETHTOOL_OPS(netdev, &be_ethtool_ops);
1914 netif_napi_add(netdev, &adapter->rx_eq.napi, be_poll_rx,
1916 netif_napi_add(netdev, &adapter->tx_eq.napi, be_poll_tx_mcc,
1919 netif_carrier_off(netdev);
1920 netif_stop_queue(netdev);
1923 static void be_unmap_pci_bars(struct be_adapter *adapter)
1926 iounmap(adapter->csr);
1928 iounmap(adapter->db);
1929 if (adapter->pcicfg)
1930 iounmap(adapter->pcicfg);
1933 static int be_map_pci_bars(struct be_adapter *adapter)
1937 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 2),
1938 pci_resource_len(adapter->pdev, 2));
1941 adapter->csr = addr;
1943 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 4),
1949 addr = ioremap_nocache(pci_resource_start(adapter->pdev, 1),
1950 pci_resource_len(adapter->pdev, 1));
1953 adapter->pcicfg = addr;
1957 be_unmap_pci_bars(adapter);
1962 static void be_ctrl_cleanup(struct be_adapter *adapter)
1964 struct be_dma_mem *mem = &adapter->mbox_mem_alloced;
1966 be_unmap_pci_bars(adapter);
1969 pci_free_consistent(adapter->pdev, mem->size,
1973 static int be_ctrl_init(struct be_adapter *adapter)
1975 struct be_dma_mem *mbox_mem_alloc = &adapter->mbox_mem_alloced;
1976 struct be_dma_mem *mbox_mem_align = &adapter->mbox_mem;
1979 status = be_map_pci_bars(adapter);
1983 mbox_mem_alloc->size = sizeof(struct be_mcc_mailbox) + 16;
1984 mbox_mem_alloc->va = pci_alloc_consistent(adapter->pdev,
1985 mbox_mem_alloc->size, &mbox_mem_alloc->dma);
1986 if (!mbox_mem_alloc->va) {
1987 be_unmap_pci_bars(adapter);
1990 mbox_mem_align->size = sizeof(struct be_mcc_mailbox);
1991 mbox_mem_align->va = PTR_ALIGN(mbox_mem_alloc->va, 16);
1992 mbox_mem_align->dma = PTR_ALIGN(mbox_mem_alloc->dma, 16);
1993 memset(mbox_mem_align->va, 0, sizeof(struct be_mcc_mailbox));
1994 spin_lock_init(&adapter->mbox_lock);
1995 spin_lock_init(&adapter->mcc_lock);
1996 spin_lock_init(&adapter->mcc_cq_lock);
2001 static void be_stats_cleanup(struct be_adapter *adapter)
2003 struct be_stats_obj *stats = &adapter->stats;
2004 struct be_dma_mem *cmd = &stats->cmd;
2007 pci_free_consistent(adapter->pdev, cmd->size,
2011 static int be_stats_init(struct be_adapter *adapter)
2013 struct be_stats_obj *stats = &adapter->stats;
2014 struct be_dma_mem *cmd = &stats->cmd;
2016 cmd->size = sizeof(struct be_cmd_req_get_stats);
2017 cmd->va = pci_alloc_consistent(adapter->pdev, cmd->size, &cmd->dma);
2018 if (cmd->va == NULL)
2023 static void __devexit be_remove(struct pci_dev *pdev)
2025 struct be_adapter *adapter = pci_get_drvdata(pdev);
2029 unregister_netdev(adapter->netdev);
2033 be_stats_cleanup(adapter);
2035 be_ctrl_cleanup(adapter);
2037 if (adapter->msix_enabled) {
2038 pci_disable_msix(adapter->pdev);
2039 adapter->msix_enabled = false;
2042 pci_set_drvdata(pdev, NULL);
2043 pci_release_regions(pdev);
2044 pci_disable_device(pdev);
2046 free_netdev(adapter->netdev);
2049 static int be_hw_up(struct be_adapter *adapter)
2053 status = be_cmd_POST(adapter);
2057 status = be_cmd_reset_function(adapter);
2061 status = be_cmd_get_fw_ver(adapter, adapter->fw_ver);
2065 status = be_cmd_query_fw_cfg(adapter,
2066 &adapter->port_num, &adapter->cap);
2070 static int __devinit be_probe(struct pci_dev *pdev,
2071 const struct pci_device_id *pdev_id)
2074 struct be_adapter *adapter;
2075 struct net_device *netdev;
2078 status = pci_enable_device(pdev);
2082 status = pci_request_regions(pdev, DRV_NAME);
2085 pci_set_master(pdev);
2087 netdev = alloc_etherdev(sizeof(struct be_adapter));
2088 if (netdev == NULL) {
2092 adapter = netdev_priv(netdev);
2093 adapter->pdev = pdev;
2094 pci_set_drvdata(pdev, adapter);
2095 adapter->netdev = netdev;
2097 be_msix_enable(adapter);
2099 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
2101 netdev->features |= NETIF_F_HIGHDMA;
2103 status = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
2105 dev_err(&pdev->dev, "Could not set PCI DMA Mask\n");
2110 status = be_ctrl_init(adapter);
2114 status = be_stats_init(adapter);
2118 status = be_hw_up(adapter);
2122 status = be_cmd_mac_addr_query(adapter, mac, MAC_ADDRESS_TYPE_NETWORK,
2123 true /* permanent */, 0);
2126 memcpy(netdev->dev_addr, mac, ETH_ALEN);
2128 INIT_DELAYED_WORK(&adapter->work, be_worker);
2129 be_netdev_init(netdev);
2130 SET_NETDEV_DEV(netdev, &adapter->pdev->dev);
2132 status = be_setup(adapter);
2135 status = register_netdev(netdev);
2139 dev_info(&pdev->dev, "%s port %d\n", nic_name(pdev), adapter->port_num);
2145 be_stats_cleanup(adapter);
2147 be_ctrl_cleanup(adapter);
2149 free_netdev(adapter->netdev);
2151 pci_release_regions(pdev);
2153 pci_disable_device(pdev);
2155 dev_err(&pdev->dev, "%s initialization failed\n", nic_name(pdev));
2159 static int be_suspend(struct pci_dev *pdev, pm_message_t state)
2161 struct be_adapter *adapter = pci_get_drvdata(pdev);
2162 struct net_device *netdev = adapter->netdev;
2164 netif_device_detach(netdev);
2165 if (netif_running(netdev)) {
2172 pci_save_state(pdev);
2173 pci_disable_device(pdev);
2174 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2178 static int be_resume(struct pci_dev *pdev)
2181 struct be_adapter *adapter = pci_get_drvdata(pdev);
2182 struct net_device *netdev = adapter->netdev;
2184 netif_device_detach(netdev);
2186 status = pci_enable_device(pdev);
2190 pci_set_power_state(pdev, 0);
2191 pci_restore_state(pdev);
2194 if (netif_running(netdev)) {
2199 netif_device_attach(netdev);
2203 static struct pci_driver be_driver = {
2205 .id_table = be_dev_ids,
2207 .remove = be_remove,
2208 .suspend = be_suspend,
2212 static int __init be_init_module(void)
2214 if (rx_frag_size != 8192 && rx_frag_size != 4096
2215 && rx_frag_size != 2048) {
2216 printk(KERN_WARNING DRV_NAME
2217 " : Module param rx_frag_size must be 2048/4096/8192."
2219 rx_frag_size = 2048;
2222 return pci_register_driver(&be_driver);
2224 module_init(be_init_module);
2226 static void __exit be_exit_module(void)
2228 pci_unregister_driver(&be_driver);
2230 module_exit(be_exit_module);