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 #define BE_VENDOR_ID 0x19a2
32 #define BE2_DEVICE_ID_1 0x0211
33 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids
) = {
34 { PCI_DEVICE(BE_VENDOR_ID
, BE2_DEVICE_ID_1
) },
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 netdev
->trans_start
= jiffies
;
483 be_tx_stats_update(adapter
, wrb_cnt
, copied
, stopped
);
487 static int be_change_mtu(struct net_device
*netdev
, int new_mtu
)
489 struct be_adapter
*adapter
= netdev_priv(netdev
);
490 if (new_mtu
< BE_MIN_MTU
||
491 new_mtu
> BE_MAX_JUMBO_FRAME_SIZE
) {
492 dev_info(&adapter
->pdev
->dev
,
493 "MTU must be between %d and %d bytes\n",
494 BE_MIN_MTU
, BE_MAX_JUMBO_FRAME_SIZE
);
497 dev_info(&adapter
->pdev
->dev
, "MTU changed from %d to %d bytes\n",
498 netdev
->mtu
, new_mtu
);
499 netdev
->mtu
= new_mtu
;
504 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
505 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
506 * set the BE in promiscuous VLAN mode.
508 static void be_vid_config(struct net_device
*netdev
)
510 struct be_adapter
*adapter
= netdev_priv(netdev
);
511 u16 vtag
[BE_NUM_VLANS_SUPPORTED
];
514 if (adapter
->num_vlans
<= BE_NUM_VLANS_SUPPORTED
) {
515 /* Construct VLAN Table to give to HW */
516 for (i
= 0; i
< VLAN_GROUP_ARRAY_LEN
; i
++) {
517 if (adapter
->vlan_tag
[i
]) {
518 vtag
[ntags
] = cpu_to_le16(i
);
522 be_cmd_vlan_config(&adapter
->ctrl
, adapter
->if_handle
,
525 be_cmd_vlan_config(&adapter
->ctrl
, adapter
->if_handle
,
530 static void be_vlan_register(struct net_device
*netdev
, struct vlan_group
*grp
)
532 struct be_adapter
*adapter
= netdev_priv(netdev
);
533 struct be_eq_obj
*rx_eq
= &adapter
->rx_eq
;
534 struct be_eq_obj
*tx_eq
= &adapter
->tx_eq
;
535 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
537 be_eq_notify(ctrl
, rx_eq
->q
.id
, false, false, 0);
538 be_eq_notify(ctrl
, tx_eq
->q
.id
, false, false, 0);
539 adapter
->vlan_grp
= grp
;
540 be_eq_notify(ctrl
, rx_eq
->q
.id
, true, false, 0);
541 be_eq_notify(ctrl
, tx_eq
->q
.id
, true, false, 0);
544 static void be_vlan_add_vid(struct net_device
*netdev
, u16 vid
)
546 struct be_adapter
*adapter
= netdev_priv(netdev
);
548 adapter
->num_vlans
++;
549 adapter
->vlan_tag
[vid
] = 1;
551 be_vid_config(netdev
);
554 static void be_vlan_rem_vid(struct net_device
*netdev
, u16 vid
)
556 struct be_adapter
*adapter
= netdev_priv(netdev
);
558 adapter
->num_vlans
--;
559 adapter
->vlan_tag
[vid
] = 0;
561 vlan_group_set_device(adapter
->vlan_grp
, vid
, NULL
);
562 be_vid_config(netdev
);
565 static void be_set_multicast_filter(struct net_device
*netdev
)
567 struct be_adapter
*adapter
= netdev_priv(netdev
);
568 struct dev_mc_list
*mc_ptr
;
569 u8 mac_addr
[32][ETH_ALEN
];
572 if (netdev
->flags
& IFF_ALLMULTI
) {
573 /* set BE in Multicast promiscuous */
574 be_cmd_mcast_mac_set(&adapter
->ctrl
,
575 adapter
->if_handle
, NULL
, 0, true);
579 for (mc_ptr
= netdev
->mc_list
; mc_ptr
; mc_ptr
= mc_ptr
->next
) {
580 memcpy(&mac_addr
[i
][0], mc_ptr
->dmi_addr
, ETH_ALEN
);
582 be_cmd_mcast_mac_set(&adapter
->ctrl
,
583 adapter
->if_handle
, &mac_addr
[0][0], i
, false);
590 /* reset the promiscuous mode also. */
591 be_cmd_mcast_mac_set(&adapter
->ctrl
,
592 adapter
->if_handle
, &mac_addr
[0][0], i
, false);
596 static void be_set_multicast_list(struct net_device
*netdev
)
598 struct be_adapter
*adapter
= netdev_priv(netdev
);
600 if (netdev
->flags
& IFF_PROMISC
) {
601 be_cmd_promiscuous_config(&adapter
->ctrl
, adapter
->port_num
, 1);
603 be_cmd_promiscuous_config(&adapter
->ctrl
, adapter
->port_num
, 0);
604 be_set_multicast_filter(netdev
);
608 static void be_rx_rate_update(struct be_adapter
*adapter
)
610 struct be_drvr_stats
*stats
= drvr_stats(adapter
);
614 if (time_before(now
, stats
->be_rx_jiffies
)) {
615 stats
->be_rx_jiffies
= now
;
619 /* Update the rate once in two seconds */
620 if ((now
- stats
->be_rx_jiffies
) < 2 * HZ
)
623 stats
->be_rx_rate
= be_calc_rate(stats
->be_rx_bytes
624 - stats
->be_rx_bytes_prev
,
625 now
- stats
->be_rx_jiffies
);
626 stats
->be_rx_jiffies
= now
;
627 stats
->be_rx_bytes_prev
= stats
->be_rx_bytes
;
630 static void be_rx_stats_update(struct be_adapter
*adapter
,
631 u32 pktsize
, u16 numfrags
)
633 struct be_drvr_stats
*stats
= drvr_stats(adapter
);
635 stats
->be_rx_compl
++;
636 stats
->be_rx_frags
+= numfrags
;
637 stats
->be_rx_bytes
+= pktsize
;
640 static struct be_rx_page_info
*
641 get_rx_page_info(struct be_adapter
*adapter
, u16 frag_idx
)
643 struct be_rx_page_info
*rx_page_info
;
644 struct be_queue_info
*rxq
= &adapter
->rx_obj
.q
;
646 rx_page_info
= &adapter
->rx_obj
.page_info_tbl
[frag_idx
];
647 BUG_ON(!rx_page_info
->page
);
649 if (rx_page_info
->last_page_user
)
650 pci_unmap_page(adapter
->pdev
, pci_unmap_addr(rx_page_info
, bus
),
651 adapter
->big_page_size
, PCI_DMA_FROMDEVICE
);
653 atomic_dec(&rxq
->used
);
657 /* Throwaway the data in the Rx completion */
658 static void be_rx_compl_discard(struct be_adapter
*adapter
,
659 struct be_eth_rx_compl
*rxcp
)
661 struct be_queue_info
*rxq
= &adapter
->rx_obj
.q
;
662 struct be_rx_page_info
*page_info
;
663 u16 rxq_idx
, i
, num_rcvd
;
665 rxq_idx
= AMAP_GET_BITS(struct amap_eth_rx_compl
, fragndx
, rxcp
);
666 num_rcvd
= AMAP_GET_BITS(struct amap_eth_rx_compl
, numfrags
, rxcp
);
668 for (i
= 0; i
< num_rcvd
; i
++) {
669 page_info
= get_rx_page_info(adapter
, rxq_idx
);
670 put_page(page_info
->page
);
671 memset(page_info
, 0, sizeof(*page_info
));
672 index_inc(&rxq_idx
, rxq
->len
);
677 * skb_fill_rx_data forms a complete skb for an ether frame
680 static void skb_fill_rx_data(struct be_adapter
*adapter
,
681 struct sk_buff
*skb
, struct be_eth_rx_compl
*rxcp
)
683 struct be_queue_info
*rxq
= &adapter
->rx_obj
.q
;
684 struct be_rx_page_info
*page_info
;
685 u16 rxq_idx
, i
, num_rcvd
;
686 u32 pktsize
, hdr_len
, curr_frag_len
;
689 rxq_idx
= AMAP_GET_BITS(struct amap_eth_rx_compl
, fragndx
, rxcp
);
690 pktsize
= AMAP_GET_BITS(struct amap_eth_rx_compl
, pktsize
, rxcp
);
691 num_rcvd
= AMAP_GET_BITS(struct amap_eth_rx_compl
, numfrags
, rxcp
);
693 page_info
= get_rx_page_info(adapter
, rxq_idx
);
695 start
= page_address(page_info
->page
) + page_info
->page_offset
;
698 /* Copy data in the first descriptor of this completion */
699 curr_frag_len
= min(pktsize
, rx_frag_size
);
701 /* Copy the header portion into skb_data */
702 hdr_len
= min((u32
)BE_HDR_LEN
, curr_frag_len
);
703 memcpy(skb
->data
, start
, hdr_len
);
704 skb
->len
= curr_frag_len
;
705 if (curr_frag_len
<= BE_HDR_LEN
) { /* tiny packet */
706 /* Complete packet has now been moved to data */
707 put_page(page_info
->page
);
709 skb
->tail
+= curr_frag_len
;
711 skb_shinfo(skb
)->nr_frags
= 1;
712 skb_shinfo(skb
)->frags
[0].page
= page_info
->page
;
713 skb_shinfo(skb
)->frags
[0].page_offset
=
714 page_info
->page_offset
+ hdr_len
;
715 skb_shinfo(skb
)->frags
[0].size
= curr_frag_len
- hdr_len
;
716 skb
->data_len
= curr_frag_len
- hdr_len
;
717 skb
->tail
+= hdr_len
;
719 memset(page_info
, 0, sizeof(*page_info
));
721 if (pktsize
<= rx_frag_size
) {
722 BUG_ON(num_rcvd
!= 1);
726 /* More frags present for this completion */
727 pktsize
-= curr_frag_len
; /* account for above copied frag */
728 for (i
= 1; i
< num_rcvd
; i
++) {
729 index_inc(&rxq_idx
, rxq
->len
);
730 page_info
= get_rx_page_info(adapter
, rxq_idx
);
732 curr_frag_len
= min(pktsize
, rx_frag_size
);
734 skb_shinfo(skb
)->frags
[i
].page
= page_info
->page
;
735 skb_shinfo(skb
)->frags
[i
].page_offset
= page_info
->page_offset
;
736 skb_shinfo(skb
)->frags
[i
].size
= curr_frag_len
;
737 skb
->len
+= curr_frag_len
;
738 skb
->data_len
+= curr_frag_len
;
739 skb_shinfo(skb
)->nr_frags
++;
740 pktsize
-= curr_frag_len
;
742 memset(page_info
, 0, sizeof(*page_info
));
745 be_rx_stats_update(adapter
, pktsize
, num_rcvd
);
749 /* Process the RX completion indicated by rxcp when LRO is disabled */
750 static void be_rx_compl_process(struct be_adapter
*adapter
,
751 struct be_eth_rx_compl
*rxcp
)
757 l4_cksm
= AMAP_GET_BITS(struct amap_eth_rx_compl
, l4_cksm
, rxcp
);
758 vtp
= AMAP_GET_BITS(struct amap_eth_rx_compl
, vtp
, rxcp
);
760 skb
= netdev_alloc_skb(adapter
->netdev
, BE_HDR_LEN
+ NET_IP_ALIGN
);
763 dev_warn(&adapter
->pdev
->dev
, "skb alloc failed\n");
764 be_rx_compl_discard(adapter
, rxcp
);
768 skb_reserve(skb
, NET_IP_ALIGN
);
770 skb_fill_rx_data(adapter
, skb
, rxcp
);
772 if (l4_cksm
&& adapter
->rx_csum
)
773 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
775 skb
->ip_summed
= CHECKSUM_NONE
;
777 skb
->truesize
= skb
->len
+ sizeof(struct sk_buff
);
778 skb
->protocol
= eth_type_trans(skb
, adapter
->netdev
);
779 skb
->dev
= adapter
->netdev
;
782 if (!adapter
->vlan_grp
|| adapter
->num_vlans
== 0) {
786 vid
= AMAP_GET_BITS(struct amap_eth_rx_compl
, vlan_tag
, rxcp
);
787 vid
= be16_to_cpu(vid
);
788 vlan_hwaccel_receive_skb(skb
, adapter
->vlan_grp
, vid
);
790 netif_receive_skb(skb
);
793 adapter
->netdev
->last_rx
= jiffies
;
798 /* Process the RX completion indicated by rxcp when LRO is enabled */
799 static void be_rx_compl_process_lro(struct be_adapter
*adapter
,
800 struct be_eth_rx_compl
*rxcp
)
802 struct be_rx_page_info
*page_info
;
803 struct skb_frag_struct rx_frags
[BE_MAX_FRAGS_PER_FRAME
];
804 struct be_queue_info
*rxq
= &adapter
->rx_obj
.q
;
805 u32 num_rcvd
, pkt_size
, remaining
, vlanf
, curr_frag_len
;
806 u16 i
, rxq_idx
= 0, vid
;
808 num_rcvd
= AMAP_GET_BITS(struct amap_eth_rx_compl
, numfrags
, rxcp
);
809 pkt_size
= AMAP_GET_BITS(struct amap_eth_rx_compl
, pktsize
, rxcp
);
810 vlanf
= AMAP_GET_BITS(struct amap_eth_rx_compl
, vtp
, rxcp
);
811 rxq_idx
= AMAP_GET_BITS(struct amap_eth_rx_compl
, fragndx
, rxcp
);
813 remaining
= pkt_size
;
814 for (i
= 0; i
< num_rcvd
; i
++) {
815 page_info
= get_rx_page_info(adapter
, rxq_idx
);
817 curr_frag_len
= min(remaining
, rx_frag_size
);
819 rx_frags
[i
].page
= page_info
->page
;
820 rx_frags
[i
].page_offset
= page_info
->page_offset
;
821 rx_frags
[i
].size
= curr_frag_len
;
822 remaining
-= curr_frag_len
;
824 index_inc(&rxq_idx
, rxq
->len
);
826 memset(page_info
, 0, sizeof(*page_info
));
829 if (likely(!vlanf
)) {
830 lro_receive_frags(&adapter
->rx_obj
.lro_mgr
, rx_frags
, pkt_size
,
833 vid
= AMAP_GET_BITS(struct amap_eth_rx_compl
, vlan_tag
, rxcp
);
834 vid
= be16_to_cpu(vid
);
836 if (!adapter
->vlan_grp
|| adapter
->num_vlans
== 0)
839 lro_vlan_hwaccel_receive_frags(&adapter
->rx_obj
.lro_mgr
,
840 rx_frags
, pkt_size
, pkt_size
, adapter
->vlan_grp
,
844 be_rx_stats_update(adapter
, pkt_size
, num_rcvd
);
848 static struct be_eth_rx_compl
*be_rx_compl_get(struct be_adapter
*adapter
)
850 struct be_eth_rx_compl
*rxcp
= queue_tail_node(&adapter
->rx_obj
.cq
);
852 if (rxcp
->dw
[offsetof(struct amap_eth_rx_compl
, valid
) / 32] == 0)
855 be_dws_le_to_cpu(rxcp
, sizeof(*rxcp
));
857 rxcp
->dw
[offsetof(struct amap_eth_rx_compl
, valid
) / 32] = 0;
859 queue_tail_inc(&adapter
->rx_obj
.cq
);
863 static inline struct page
*be_alloc_pages(u32 size
)
865 gfp_t alloc_flags
= GFP_ATOMIC
;
866 u32 order
= get_order(size
);
868 alloc_flags
|= __GFP_COMP
;
869 return alloc_pages(alloc_flags
, order
);
873 * Allocate a page, split it to fragments of size rx_frag_size and post as
874 * receive buffers to BE
876 static void be_post_rx_frags(struct be_adapter
*adapter
)
878 struct be_rx_page_info
*page_info_tbl
= adapter
->rx_obj
.page_info_tbl
;
879 struct be_rx_page_info
*page_info
= NULL
;
880 struct be_queue_info
*rxq
= &adapter
->rx_obj
.q
;
881 struct page
*pagep
= NULL
;
882 struct be_eth_rx_d
*rxd
;
883 u64 page_dmaaddr
= 0, frag_dmaaddr
;
884 u32 posted
, page_offset
= 0;
886 page_info
= &page_info_tbl
[rxq
->head
];
887 for (posted
= 0; posted
< MAX_RX_POST
&& !page_info
->page
; posted
++) {
889 pagep
= be_alloc_pages(adapter
->big_page_size
);
890 if (unlikely(!pagep
)) {
891 drvr_stats(adapter
)->be_ethrx_post_fail
++;
894 page_dmaaddr
= pci_map_page(adapter
->pdev
, pagep
, 0,
895 adapter
->big_page_size
,
897 page_info
->page_offset
= 0;
900 page_info
->page_offset
= page_offset
+ rx_frag_size
;
902 page_offset
= page_info
->page_offset
;
903 page_info
->page
= pagep
;
904 pci_unmap_addr_set(page_info
, bus
, page_dmaaddr
);
905 frag_dmaaddr
= page_dmaaddr
+ page_info
->page_offset
;
907 rxd
= queue_head_node(rxq
);
908 rxd
->fragpa_lo
= cpu_to_le32(frag_dmaaddr
& 0xFFFFFFFF);
909 rxd
->fragpa_hi
= cpu_to_le32(upper_32_bits(frag_dmaaddr
));
912 /* Any space left in the current big page for another frag? */
913 if ((page_offset
+ rx_frag_size
+ rx_frag_size
) >
914 adapter
->big_page_size
) {
916 page_info
->last_page_user
= true;
918 page_info
= &page_info_tbl
[rxq
->head
];
921 page_info
->last_page_user
= true;
924 atomic_add(posted
, &rxq
->used
);
925 be_rxq_notify(&adapter
->ctrl
, rxq
->id
, posted
);
926 } else if (atomic_read(&rxq
->used
) == 0) {
927 /* Let be_worker replenish when memory is available */
928 adapter
->rx_post_starved
= true;
934 static struct be_eth_tx_compl
*
935 be_tx_compl_get(struct be_adapter
*adapter
)
937 struct be_queue_info
*tx_cq
= &adapter
->tx_obj
.cq
;
938 struct be_eth_tx_compl
*txcp
= queue_tail_node(tx_cq
);
940 if (txcp
->dw
[offsetof(struct amap_eth_tx_compl
, valid
) / 32] == 0)
943 be_dws_le_to_cpu(txcp
, sizeof(*txcp
));
945 txcp
->dw
[offsetof(struct amap_eth_tx_compl
, valid
) / 32] = 0;
947 queue_tail_inc(tx_cq
);
951 static void be_tx_compl_process(struct be_adapter
*adapter
, u16 last_index
)
953 struct be_queue_info
*txq
= &adapter
->tx_obj
.q
;
954 struct be_eth_wrb
*wrb
;
955 struct sk_buff
**sent_skbs
= adapter
->tx_obj
.sent_skb_list
;
956 struct sk_buff
*sent_skb
;
958 u16 cur_index
, num_wrbs
= 0;
960 cur_index
= txq
->tail
;
961 sent_skb
= sent_skbs
[cur_index
];
963 sent_skbs
[cur_index
] = NULL
;
966 cur_index
= txq
->tail
;
967 wrb
= queue_tail_node(txq
);
968 be_dws_le_to_cpu(wrb
, sizeof(*wrb
));
969 busaddr
= ((u64
)wrb
->frag_pa_hi
<< 32) | (u64
)wrb
->frag_pa_lo
;
971 pci_unmap_single(adapter
->pdev
, busaddr
,
972 wrb
->frag_len
, PCI_DMA_TODEVICE
);
976 } while (cur_index
!= last_index
);
978 atomic_sub(num_wrbs
, &txq
->used
);
983 static void be_rx_q_clean(struct be_adapter
*adapter
)
985 struct be_rx_page_info
*page_info
;
986 struct be_queue_info
*rxq
= &adapter
->rx_obj
.q
;
987 struct be_queue_info
*rx_cq
= &adapter
->rx_obj
.cq
;
988 struct be_eth_rx_compl
*rxcp
;
991 /* First cleanup pending rx completions */
992 while ((rxcp
= be_rx_compl_get(adapter
)) != NULL
) {
993 be_rx_compl_discard(adapter
, rxcp
);
994 be_cq_notify(&adapter
->ctrl
, rx_cq
->id
, true, 1);
997 /* Then free posted rx buffer that were not used */
998 tail
= (rxq
->head
+ rxq
->len
- atomic_read(&rxq
->used
)) % rxq
->len
;
999 for (; tail
!= rxq
->head
; index_inc(&tail
, rxq
->len
)) {
1000 page_info
= get_rx_page_info(adapter
, tail
);
1001 put_page(page_info
->page
);
1002 memset(page_info
, 0, sizeof(*page_info
));
1004 BUG_ON(atomic_read(&rxq
->used
));
1007 static void be_tx_q_clean(struct be_adapter
*adapter
)
1009 struct sk_buff
**sent_skbs
= adapter
->tx_obj
.sent_skb_list
;
1010 struct sk_buff
*sent_skb
;
1011 struct be_queue_info
*txq
= &adapter
->tx_obj
.q
;
1015 while (atomic_read(&txq
->used
)) {
1016 sent_skb
= sent_skbs
[txq
->tail
];
1017 last_index
= txq
->tail
;
1018 index_adv(&last_index
,
1019 wrb_cnt_for_skb(sent_skb
, &dummy_wrb
) - 1, txq
->len
);
1020 be_tx_compl_process(adapter
, last_index
);
1024 static void be_tx_queues_destroy(struct be_adapter
*adapter
)
1026 struct be_queue_info
*q
;
1028 q
= &adapter
->tx_obj
.q
;
1030 be_cmd_q_destroy(&adapter
->ctrl
, q
, QTYPE_TXQ
);
1031 be_queue_free(adapter
, q
);
1033 q
= &adapter
->tx_obj
.cq
;
1035 be_cmd_q_destroy(&adapter
->ctrl
, q
, QTYPE_CQ
);
1036 be_queue_free(adapter
, q
);
1038 /* No more tx completions can be rcvd now; clean up if there are
1039 * any pending completions or pending tx requests */
1040 be_tx_q_clean(adapter
);
1042 q
= &adapter
->tx_eq
.q
;
1044 be_cmd_q_destroy(&adapter
->ctrl
, q
, QTYPE_EQ
);
1045 be_queue_free(adapter
, q
);
1048 static int be_tx_queues_create(struct be_adapter
*adapter
)
1050 struct be_queue_info
*eq
, *q
, *cq
;
1052 adapter
->tx_eq
.max_eqd
= 0;
1053 adapter
->tx_eq
.min_eqd
= 0;
1054 adapter
->tx_eq
.cur_eqd
= 96;
1055 adapter
->tx_eq
.enable_aic
= false;
1056 /* Alloc Tx Event queue */
1057 eq
= &adapter
->tx_eq
.q
;
1058 if (be_queue_alloc(adapter
, eq
, EVNT_Q_LEN
, sizeof(struct be_eq_entry
)))
1061 /* Ask BE to create Tx Event queue */
1062 if (be_cmd_eq_create(&adapter
->ctrl
, eq
, adapter
->tx_eq
.cur_eqd
))
1064 /* Alloc TX eth compl queue */
1065 cq
= &adapter
->tx_obj
.cq
;
1066 if (be_queue_alloc(adapter
, cq
, TX_CQ_LEN
,
1067 sizeof(struct be_eth_tx_compl
)))
1070 /* Ask BE to create Tx eth compl queue */
1071 if (be_cmd_cq_create(&adapter
->ctrl
, cq
, eq
, false, false, 3))
1074 /* Alloc TX eth queue */
1075 q
= &adapter
->tx_obj
.q
;
1076 if (be_queue_alloc(adapter
, q
, TX_Q_LEN
, sizeof(struct be_eth_wrb
)))
1079 /* Ask BE to create Tx eth queue */
1080 if (be_cmd_txq_create(&adapter
->ctrl
, q
, cq
))
1085 be_queue_free(adapter
, q
);
1087 be_cmd_q_destroy(&adapter
->ctrl
, cq
, QTYPE_CQ
);
1089 be_queue_free(adapter
, cq
);
1091 be_cmd_q_destroy(&adapter
->ctrl
, eq
, QTYPE_EQ
);
1093 be_queue_free(adapter
, eq
);
1097 static void be_rx_queues_destroy(struct be_adapter
*adapter
)
1099 struct be_queue_info
*q
;
1101 q
= &adapter
->rx_obj
.q
;
1103 be_cmd_q_destroy(&adapter
->ctrl
, q
, QTYPE_RXQ
);
1104 be_rx_q_clean(adapter
);
1106 be_queue_free(adapter
, q
);
1108 q
= &adapter
->rx_obj
.cq
;
1110 be_cmd_q_destroy(&adapter
->ctrl
, q
, QTYPE_CQ
);
1111 be_queue_free(adapter
, q
);
1113 q
= &adapter
->rx_eq
.q
;
1115 be_cmd_q_destroy(&adapter
->ctrl
, q
, QTYPE_EQ
);
1116 be_queue_free(adapter
, q
);
1119 static int be_rx_queues_create(struct be_adapter
*adapter
)
1121 struct be_queue_info
*eq
, *q
, *cq
;
1124 adapter
->max_rx_coal
= BE_MAX_FRAGS_PER_FRAME
;
1125 adapter
->big_page_size
= (1 << get_order(rx_frag_size
)) * PAGE_SIZE
;
1126 adapter
->rx_eq
.max_eqd
= BE_MAX_EQD
;
1127 adapter
->rx_eq
.min_eqd
= 0;
1128 adapter
->rx_eq
.cur_eqd
= 0;
1129 adapter
->rx_eq
.enable_aic
= true;
1131 /* Alloc Rx Event queue */
1132 eq
= &adapter
->rx_eq
.q
;
1133 rc
= be_queue_alloc(adapter
, eq
, EVNT_Q_LEN
,
1134 sizeof(struct be_eq_entry
));
1138 /* Ask BE to create Rx Event queue */
1139 rc
= be_cmd_eq_create(&adapter
->ctrl
, eq
, adapter
->rx_eq
.cur_eqd
);
1143 /* Alloc RX eth compl queue */
1144 cq
= &adapter
->rx_obj
.cq
;
1145 rc
= be_queue_alloc(adapter
, cq
, RX_CQ_LEN
,
1146 sizeof(struct be_eth_rx_compl
));
1150 /* Ask BE to create Rx eth compl queue */
1151 rc
= be_cmd_cq_create(&adapter
->ctrl
, cq
, eq
, false, false, 3);
1155 /* Alloc RX eth queue */
1156 q
= &adapter
->rx_obj
.q
;
1157 rc
= be_queue_alloc(adapter
, q
, RX_Q_LEN
, sizeof(struct be_eth_rx_d
));
1161 /* Ask BE to create Rx eth queue */
1162 rc
= be_cmd_rxq_create(&adapter
->ctrl
, q
, cq
->id
, rx_frag_size
,
1163 BE_MAX_JUMBO_FRAME_SIZE
, adapter
->if_handle
, false);
1169 be_queue_free(adapter
, q
);
1171 be_cmd_q_destroy(&adapter
->ctrl
, cq
, QTYPE_CQ
);
1173 be_queue_free(adapter
, cq
);
1175 be_cmd_q_destroy(&adapter
->ctrl
, eq
, QTYPE_EQ
);
1177 be_queue_free(adapter
, eq
);
1180 static bool event_get(struct be_eq_obj
*eq_obj
, u16
*rid
)
1182 struct be_eq_entry
*entry
= queue_tail_node(&eq_obj
->q
);
1183 u32 evt
= entry
->evt
;
1188 evt
= le32_to_cpu(evt
);
1189 *rid
= (evt
>> EQ_ENTRY_RES_ID_SHIFT
) & EQ_ENTRY_RES_ID_MASK
;
1191 queue_tail_inc(&eq_obj
->q
);
1195 static int event_handle(struct be_ctrl_info
*ctrl
,
1196 struct be_eq_obj
*eq_obj
)
1198 u16 rid
= 0, num
= 0;
1200 while (event_get(eq_obj
, &rid
))
1203 /* We can see an interrupt and no event */
1204 be_eq_notify(ctrl
, eq_obj
->q
.id
, true, true, num
);
1206 napi_schedule(&eq_obj
->napi
);
1211 static irqreturn_t
be_intx(int irq
, void *dev
)
1213 struct be_adapter
*adapter
= dev
;
1214 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1217 tx
= event_handle(ctrl
, &adapter
->tx_eq
);
1218 rx
= event_handle(ctrl
, &adapter
->rx_eq
);
1226 static irqreturn_t
be_msix_rx(int irq
, void *dev
)
1228 struct be_adapter
*adapter
= dev
;
1230 event_handle(&adapter
->ctrl
, &adapter
->rx_eq
);
1235 static irqreturn_t
be_msix_tx(int irq
, void *dev
)
1237 struct be_adapter
*adapter
= dev
;
1239 event_handle(&adapter
->ctrl
, &adapter
->tx_eq
);
1244 static inline bool do_lro(struct be_adapter
*adapter
,
1245 struct be_eth_rx_compl
*rxcp
)
1247 int err
= AMAP_GET_BITS(struct amap_eth_rx_compl
, err
, rxcp
);
1248 int tcp_frame
= AMAP_GET_BITS(struct amap_eth_rx_compl
, tcpf
, rxcp
);
1251 drvr_stats(adapter
)->be_rxcp_err
++;
1253 return (!tcp_frame
|| err
|| (adapter
->max_rx_coal
<= 1)) ?
1257 int be_poll_rx(struct napi_struct
*napi
, int budget
)
1259 struct be_eq_obj
*rx_eq
= container_of(napi
, struct be_eq_obj
, napi
);
1260 struct be_adapter
*adapter
=
1261 container_of(rx_eq
, struct be_adapter
, rx_eq
);
1262 struct be_queue_info
*rx_cq
= &adapter
->rx_obj
.cq
;
1263 struct be_eth_rx_compl
*rxcp
;
1266 for (work_done
= 0; work_done
< budget
; work_done
++) {
1267 rxcp
= be_rx_compl_get(adapter
);
1271 if (do_lro(adapter
, rxcp
))
1272 be_rx_compl_process_lro(adapter
, rxcp
);
1274 be_rx_compl_process(adapter
, rxcp
);
1277 lro_flush_all(&adapter
->rx_obj
.lro_mgr
);
1279 /* Refill the queue */
1280 if (atomic_read(&adapter
->rx_obj
.q
.used
) < RX_FRAGS_REFILL_WM
)
1281 be_post_rx_frags(adapter
);
1284 if (work_done
< budget
) {
1285 napi_complete(napi
);
1286 be_cq_notify(&adapter
->ctrl
, rx_cq
->id
, true, work_done
);
1288 /* More to be consumed; continue with interrupts disabled */
1289 be_cq_notify(&adapter
->ctrl
, rx_cq
->id
, false, work_done
);
1294 /* For TX we don't honour budget; consume everything */
1295 int be_poll_tx(struct napi_struct
*napi
, int budget
)
1297 struct be_eq_obj
*tx_eq
= container_of(napi
, struct be_eq_obj
, napi
);
1298 struct be_adapter
*adapter
=
1299 container_of(tx_eq
, struct be_adapter
, tx_eq
);
1300 struct be_tx_obj
*tx_obj
= &adapter
->tx_obj
;
1301 struct be_queue_info
*tx_cq
= &tx_obj
->cq
;
1302 struct be_queue_info
*txq
= &tx_obj
->q
;
1303 struct be_eth_tx_compl
*txcp
;
1307 while ((txcp
= be_tx_compl_get(adapter
))) {
1308 end_idx
= AMAP_GET_BITS(struct amap_eth_tx_compl
,
1310 be_tx_compl_process(adapter
, end_idx
);
1314 /* As Tx wrbs have been freed up, wake up netdev queue if
1315 * it was stopped due to lack of tx wrbs.
1317 if (netif_queue_stopped(adapter
->netdev
) &&
1318 atomic_read(&txq
->used
) < txq
->len
/ 2) {
1319 netif_wake_queue(adapter
->netdev
);
1322 napi_complete(napi
);
1324 be_cq_notify(&adapter
->ctrl
, tx_cq
->id
, true, num_cmpl
);
1326 drvr_stats(adapter
)->be_tx_events
++;
1327 drvr_stats(adapter
)->be_tx_compl
+= num_cmpl
;
1332 static void be_worker(struct work_struct
*work
)
1334 struct be_adapter
*adapter
=
1335 container_of(work
, struct be_adapter
, work
.work
);
1339 be_link_status_update(adapter
);
1342 status
= be_cmd_get_stats(&adapter
->ctrl
, &adapter
->stats
.cmd
);
1344 netdev_stats_update(adapter
);
1347 be_rx_eqd_update(adapter
);
1349 be_tx_rate_update(adapter
);
1350 be_rx_rate_update(adapter
);
1352 if (adapter
->rx_post_starved
) {
1353 adapter
->rx_post_starved
= false;
1354 be_post_rx_frags(adapter
);
1357 schedule_delayed_work(&adapter
->work
, msecs_to_jiffies(1000));
1360 static void be_msix_enable(struct be_adapter
*adapter
)
1364 for (i
= 0; i
< BE_NUM_MSIX_VECTORS
; i
++)
1365 adapter
->msix_entries
[i
].entry
= i
;
1367 status
= pci_enable_msix(adapter
->pdev
, adapter
->msix_entries
,
1368 BE_NUM_MSIX_VECTORS
);
1370 adapter
->msix_enabled
= true;
1374 static inline int be_msix_vec_get(struct be_adapter
*adapter
, u32 eq_id
)
1376 return adapter
->msix_entries
[eq_id
-
1377 8 * adapter
->ctrl
.pci_func
].vector
;
1380 static int be_msix_register(struct be_adapter
*adapter
)
1382 struct net_device
*netdev
= adapter
->netdev
;
1383 struct be_eq_obj
*tx_eq
= &adapter
->tx_eq
;
1384 struct be_eq_obj
*rx_eq
= &adapter
->rx_eq
;
1387 sprintf(tx_eq
->desc
, "%s-tx", netdev
->name
);
1388 vec
= be_msix_vec_get(adapter
, tx_eq
->q
.id
);
1389 status
= request_irq(vec
, be_msix_tx
, 0, tx_eq
->desc
, adapter
);
1393 sprintf(rx_eq
->desc
, "%s-rx", netdev
->name
);
1394 vec
= be_msix_vec_get(adapter
, rx_eq
->q
.id
);
1395 status
= request_irq(vec
, be_msix_rx
, 0, rx_eq
->desc
, adapter
);
1396 if (status
) { /* Free TX IRQ */
1397 vec
= be_msix_vec_get(adapter
, tx_eq
->q
.id
);
1398 free_irq(vec
, adapter
);
1403 dev_warn(&adapter
->pdev
->dev
,
1404 "MSIX Request IRQ failed - err %d\n", status
);
1405 pci_disable_msix(adapter
->pdev
);
1406 adapter
->msix_enabled
= false;
1410 static int be_irq_register(struct be_adapter
*adapter
)
1412 struct net_device
*netdev
= adapter
->netdev
;
1415 if (adapter
->msix_enabled
) {
1416 status
= be_msix_register(adapter
);
1422 netdev
->irq
= adapter
->pdev
->irq
;
1423 status
= request_irq(netdev
->irq
, be_intx
, IRQF_SHARED
, netdev
->name
,
1426 dev_err(&adapter
->pdev
->dev
,
1427 "INTx request IRQ failed - err %d\n", status
);
1431 adapter
->isr_registered
= true;
1435 static void be_irq_unregister(struct be_adapter
*adapter
)
1437 struct net_device
*netdev
= adapter
->netdev
;
1440 if (!adapter
->isr_registered
)
1444 if (!adapter
->msix_enabled
) {
1445 free_irq(netdev
->irq
, adapter
);
1450 vec
= be_msix_vec_get(adapter
, adapter
->tx_eq
.q
.id
);
1451 free_irq(vec
, adapter
);
1452 vec
= be_msix_vec_get(adapter
, adapter
->rx_eq
.q
.id
);
1453 free_irq(vec
, adapter
);
1455 adapter
->isr_registered
= false;
1459 static int be_open(struct net_device
*netdev
)
1461 struct be_adapter
*adapter
= netdev_priv(netdev
);
1462 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1463 struct be_eq_obj
*rx_eq
= &adapter
->rx_eq
;
1464 struct be_eq_obj
*tx_eq
= &adapter
->tx_eq
;
1468 if_flags
= BE_IF_FLAGS_BROADCAST
| BE_IF_FLAGS_PROMISCUOUS
|
1469 BE_IF_FLAGS_MCAST_PROMISCUOUS
| BE_IF_FLAGS_UNTAGGED
|
1470 BE_IF_FLAGS_PASS_L3L4_ERRORS
;
1471 status
= be_cmd_if_create(ctrl
, if_flags
, netdev
->dev_addr
,
1472 false/* pmac_invalid */, &adapter
->if_handle
,
1477 be_vid_config(netdev
);
1479 status
= be_cmd_set_flow_control(ctrl
, true, true);
1483 status
= be_tx_queues_create(adapter
);
1487 status
= be_rx_queues_create(adapter
);
1491 /* First time posting */
1492 be_post_rx_frags(adapter
);
1494 napi_enable(&rx_eq
->napi
);
1495 napi_enable(&tx_eq
->napi
);
1497 be_irq_register(adapter
);
1499 be_intr_set(ctrl
, true);
1501 /* The evt queues are created in the unarmed state; arm them */
1502 be_eq_notify(ctrl
, rx_eq
->q
.id
, true, false, 0);
1503 be_eq_notify(ctrl
, tx_eq
->q
.id
, true, false, 0);
1505 /* The compl queues are created in the unarmed state; arm them */
1506 be_cq_notify(ctrl
, adapter
->rx_obj
.cq
.id
, true, 0);
1507 be_cq_notify(ctrl
, adapter
->tx_obj
.cq
.id
, true, 0);
1509 be_link_status_update(adapter
);
1511 schedule_delayed_work(&adapter
->work
, msecs_to_jiffies(100));
1515 be_tx_queues_destroy(adapter
);
1517 be_cmd_if_destroy(ctrl
, adapter
->if_handle
);
1522 static int be_close(struct net_device
*netdev
)
1524 struct be_adapter
*adapter
= netdev_priv(netdev
);
1525 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1526 struct be_eq_obj
*rx_eq
= &adapter
->rx_eq
;
1527 struct be_eq_obj
*tx_eq
= &adapter
->tx_eq
;
1530 cancel_delayed_work(&adapter
->work
);
1532 netif_stop_queue(netdev
);
1533 netif_carrier_off(netdev
);
1534 adapter
->link
.speed
= PHY_LINK_SPEED_ZERO
;
1536 be_intr_set(ctrl
, false);
1538 if (adapter
->msix_enabled
) {
1539 vec
= be_msix_vec_get(adapter
, tx_eq
->q
.id
);
1540 synchronize_irq(vec
);
1541 vec
= be_msix_vec_get(adapter
, rx_eq
->q
.id
);
1542 synchronize_irq(vec
);
1544 synchronize_irq(netdev
->irq
);
1546 be_irq_unregister(adapter
);
1548 napi_disable(&rx_eq
->napi
);
1549 napi_disable(&tx_eq
->napi
);
1551 be_rx_queues_destroy(adapter
);
1552 be_tx_queues_destroy(adapter
);
1554 be_cmd_if_destroy(ctrl
, adapter
->if_handle
);
1558 static int be_get_frag_header(struct skb_frag_struct
*frag
, void **mac_hdr
,
1559 void **ip_hdr
, void **tcpudp_hdr
,
1560 u64
*hdr_flags
, void *priv
)
1563 struct vlan_ethhdr
*veh
;
1565 u8
*va
= page_address(frag
->page
) + frag
->page_offset
;
1566 unsigned long ll_hlen
;
1569 eh
= (struct ethhdr
*)va
;
1572 if (eh
->h_proto
!= htons(ETH_P_IP
)) {
1573 if (eh
->h_proto
== htons(ETH_P_8021Q
)) {
1574 veh
= (struct vlan_ethhdr
*)va
;
1575 if (veh
->h_vlan_encapsulated_proto
!= htons(ETH_P_IP
))
1578 ll_hlen
+= VLAN_HLEN
;
1583 *hdr_flags
= LRO_IPV4
;
1584 iph
= (struct iphdr
*)(va
+ ll_hlen
);
1586 if (iph
->protocol
!= IPPROTO_TCP
)
1588 *hdr_flags
|= LRO_TCP
;
1589 *tcpudp_hdr
= (u8
*) (*ip_hdr
) + (iph
->ihl
<< 2);
1594 static void be_lro_init(struct be_adapter
*adapter
, struct net_device
*netdev
)
1596 struct net_lro_mgr
*lro_mgr
;
1598 lro_mgr
= &adapter
->rx_obj
.lro_mgr
;
1599 lro_mgr
->dev
= netdev
;
1600 lro_mgr
->features
= LRO_F_NAPI
;
1601 lro_mgr
->ip_summed
= CHECKSUM_UNNECESSARY
;
1602 lro_mgr
->ip_summed_aggr
= CHECKSUM_UNNECESSARY
;
1603 lro_mgr
->max_desc
= BE_MAX_LRO_DESCRIPTORS
;
1604 lro_mgr
->lro_arr
= adapter
->rx_obj
.lro_desc
;
1605 lro_mgr
->get_frag_header
= be_get_frag_header
;
1606 lro_mgr
->max_aggr
= BE_MAX_FRAGS_PER_FRAME
;
1609 static struct net_device_ops be_netdev_ops
= {
1610 .ndo_open
= be_open
,
1611 .ndo_stop
= be_close
,
1612 .ndo_start_xmit
= be_xmit
,
1613 .ndo_get_stats
= be_get_stats
,
1614 .ndo_set_rx_mode
= be_set_multicast_list
,
1615 .ndo_set_mac_address
= be_mac_addr_set
,
1616 .ndo_change_mtu
= be_change_mtu
,
1617 .ndo_validate_addr
= eth_validate_addr
,
1618 .ndo_vlan_rx_register
= be_vlan_register
,
1619 .ndo_vlan_rx_add_vid
= be_vlan_add_vid
,
1620 .ndo_vlan_rx_kill_vid
= be_vlan_rem_vid
,
1623 static void be_netdev_init(struct net_device
*netdev
)
1625 struct be_adapter
*adapter
= netdev_priv(netdev
);
1627 netdev
->features
|= NETIF_F_SG
| NETIF_F_HW_VLAN_RX
| NETIF_F_TSO
|
1628 NETIF_F_HW_VLAN_TX
| NETIF_F_HW_VLAN_FILTER
| NETIF_F_IP_CSUM
|
1629 NETIF_F_IPV6_CSUM
| NETIF_F_TSO6
;
1631 netdev
->flags
|= IFF_MULTICAST
;
1633 BE_SET_NETDEV_OPS(netdev
, &be_netdev_ops
);
1635 SET_ETHTOOL_OPS(netdev
, &be_ethtool_ops
);
1637 be_lro_init(adapter
, netdev
);
1639 netif_napi_add(netdev
, &adapter
->rx_eq
.napi
, be_poll_rx
,
1641 netif_napi_add(netdev
, &adapter
->tx_eq
.napi
, be_poll_tx
,
1644 netif_carrier_off(netdev
);
1645 netif_stop_queue(netdev
);
1648 static void be_unmap_pci_bars(struct be_adapter
*adapter
)
1650 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1656 iounmap(ctrl
->pcicfg
);
1659 static int be_map_pci_bars(struct be_adapter
*adapter
)
1663 addr
= ioremap_nocache(pci_resource_start(adapter
->pdev
, 2),
1664 pci_resource_len(adapter
->pdev
, 2));
1667 adapter
->ctrl
.csr
= addr
;
1669 addr
= ioremap_nocache(pci_resource_start(adapter
->pdev
, 4),
1673 adapter
->ctrl
.db
= addr
;
1675 addr
= ioremap_nocache(pci_resource_start(adapter
->pdev
, 1),
1676 pci_resource_len(adapter
->pdev
, 1));
1679 adapter
->ctrl
.pcicfg
= addr
;
1683 be_unmap_pci_bars(adapter
);
1688 static void be_ctrl_cleanup(struct be_adapter
*adapter
)
1690 struct be_dma_mem
*mem
= &adapter
->ctrl
.mbox_mem_alloced
;
1692 be_unmap_pci_bars(adapter
);
1695 pci_free_consistent(adapter
->pdev
, mem
->size
,
1699 /* Initialize the mbox required to send cmds to BE */
1700 static int be_ctrl_init(struct be_adapter
*adapter
)
1702 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1703 struct be_dma_mem
*mbox_mem_alloc
= &ctrl
->mbox_mem_alloced
;
1704 struct be_dma_mem
*mbox_mem_align
= &ctrl
->mbox_mem
;
1708 status
= be_map_pci_bars(adapter
);
1712 mbox_mem_alloc
->size
= sizeof(struct be_mcc_mailbox
) + 16;
1713 mbox_mem_alloc
->va
= pci_alloc_consistent(adapter
->pdev
,
1714 mbox_mem_alloc
->size
, &mbox_mem_alloc
->dma
);
1715 if (!mbox_mem_alloc
->va
) {
1716 be_unmap_pci_bars(adapter
);
1719 mbox_mem_align
->size
= sizeof(struct be_mcc_mailbox
);
1720 mbox_mem_align
->va
= PTR_ALIGN(mbox_mem_alloc
->va
, 16);
1721 mbox_mem_align
->dma
= PTR_ALIGN(mbox_mem_alloc
->dma
, 16);
1722 memset(mbox_mem_align
->va
, 0, sizeof(struct be_mcc_mailbox
));
1723 spin_lock_init(&ctrl
->cmd_lock
);
1725 val
= ioread32(ctrl
->pcicfg
+ PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET
);
1726 ctrl
->pci_func
= (val
>> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT
) &
1727 MEMBAR_CTRL_INT_CTRL_PFUNC_MASK
;
1731 static void be_stats_cleanup(struct be_adapter
*adapter
)
1733 struct be_stats_obj
*stats
= &adapter
->stats
;
1734 struct be_dma_mem
*cmd
= &stats
->cmd
;
1737 pci_free_consistent(adapter
->pdev
, cmd
->size
,
1741 static int be_stats_init(struct be_adapter
*adapter
)
1743 struct be_stats_obj
*stats
= &adapter
->stats
;
1744 struct be_dma_mem
*cmd
= &stats
->cmd
;
1746 cmd
->size
= sizeof(struct be_cmd_req_get_stats
);
1747 cmd
->va
= pci_alloc_consistent(adapter
->pdev
, cmd
->size
, &cmd
->dma
);
1748 if (cmd
->va
== NULL
)
1753 static void __devexit
be_remove(struct pci_dev
*pdev
)
1755 struct be_adapter
*adapter
= pci_get_drvdata(pdev
);
1759 unregister_netdev(adapter
->netdev
);
1761 be_stats_cleanup(adapter
);
1763 be_ctrl_cleanup(adapter
);
1765 if (adapter
->msix_enabled
) {
1766 pci_disable_msix(adapter
->pdev
);
1767 adapter
->msix_enabled
= false;
1770 pci_set_drvdata(pdev
, NULL
);
1771 pci_release_regions(pdev
);
1772 pci_disable_device(pdev
);
1774 free_netdev(adapter
->netdev
);
1777 static int be_hw_up(struct be_adapter
*adapter
)
1779 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1782 status
= be_cmd_POST(ctrl
);
1786 status
= be_cmd_get_fw_ver(ctrl
, adapter
->fw_ver
);
1790 status
= be_cmd_query_fw_cfg(ctrl
, &adapter
->port_num
);
1794 static int __devinit
be_probe(struct pci_dev
*pdev
,
1795 const struct pci_device_id
*pdev_id
)
1798 struct be_adapter
*adapter
;
1799 struct net_device
*netdev
;
1800 struct be_ctrl_info
*ctrl
;
1803 status
= pci_enable_device(pdev
);
1807 status
= pci_request_regions(pdev
, DRV_NAME
);
1810 pci_set_master(pdev
);
1812 netdev
= alloc_etherdev(sizeof(struct be_adapter
));
1813 if (netdev
== NULL
) {
1817 adapter
= netdev_priv(netdev
);
1818 adapter
->pdev
= pdev
;
1819 pci_set_drvdata(pdev
, adapter
);
1820 adapter
->netdev
= netdev
;
1822 be_msix_enable(adapter
);
1824 status
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(64));
1826 netdev
->features
|= NETIF_F_HIGHDMA
;
1828 status
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
1830 dev_err(&pdev
->dev
, "Could not set PCI DMA Mask\n");
1835 ctrl
= &adapter
->ctrl
;
1836 status
= be_ctrl_init(adapter
);
1840 status
= be_stats_init(adapter
);
1844 status
= be_hw_up(adapter
);
1848 status
= be_cmd_mac_addr_query(ctrl
, mac
, MAC_ADDRESS_TYPE_NETWORK
,
1849 true /* permanent */, 0);
1852 memcpy(netdev
->dev_addr
, mac
, ETH_ALEN
);
1854 INIT_DELAYED_WORK(&adapter
->work
, be_worker
);
1855 be_netdev_init(netdev
);
1856 SET_NETDEV_DEV(netdev
, &adapter
->pdev
->dev
);
1858 status
= register_netdev(netdev
);
1862 dev_info(&pdev
->dev
, BE_NAME
" port %d\n", adapter
->port_num
);
1866 be_stats_cleanup(adapter
);
1868 be_ctrl_cleanup(adapter
);
1870 free_netdev(adapter
->netdev
);
1872 pci_release_regions(pdev
);
1874 pci_disable_device(pdev
);
1876 dev_warn(&pdev
->dev
, BE_NAME
" initialization failed\n");
1880 static int be_suspend(struct pci_dev
*pdev
, pm_message_t state
)
1882 struct be_adapter
*adapter
= pci_get_drvdata(pdev
);
1883 struct net_device
*netdev
= adapter
->netdev
;
1885 netif_device_detach(netdev
);
1886 if (netif_running(netdev
)) {
1892 pci_save_state(pdev
);
1893 pci_disable_device(pdev
);
1894 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
1898 static int be_resume(struct pci_dev
*pdev
)
1901 struct be_adapter
*adapter
= pci_get_drvdata(pdev
);
1902 struct net_device
*netdev
= adapter
->netdev
;
1904 netif_device_detach(netdev
);
1906 status
= pci_enable_device(pdev
);
1910 pci_set_power_state(pdev
, 0);
1911 pci_restore_state(pdev
);
1913 if (netif_running(netdev
)) {
1918 netif_device_attach(netdev
);
1922 static struct pci_driver be_driver
= {
1924 .id_table
= be_dev_ids
,
1926 .remove
= be_remove
,
1927 .suspend
= be_suspend
,
1931 static int __init
be_init_module(void)
1933 if (rx_frag_size
!= 8192 && rx_frag_size
!= 4096
1934 && rx_frag_size
!= 2048) {
1935 printk(KERN_WARNING DRV_NAME
1936 " : Module param rx_frag_size must be 2048/4096/8192."
1938 rx_frag_size
= 2048;
1940 /* Ensure rx_frag_size is aligned to chache line */
1941 if (SKB_DATA_ALIGN(rx_frag_size
) != rx_frag_size
) {
1942 printk(KERN_WARNING DRV_NAME
1943 " : Bad module param rx_frag_size. Using 2048\n");
1944 rx_frag_size
= 2048;
1947 return pci_register_driver(&be_driver
);
1949 module_init(be_init_module
);
1951 static void __exit
be_exit_module(void)
1953 pci_unregister_driver(&be_driver
);
1955 module_exit(be_exit_module
);