2 * Copyright (C) 2005 - 2009 ServerEngines
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
10 * Contact Information:
11 * linux-drivers@serverengines.com
14 * 209 N. Fair Oaks Ave
19 #include <asm/div64.h>
21 MODULE_VERSION(DRV_VER
);
22 MODULE_DEVICE_TABLE(pci
, be_dev_ids
);
23 MODULE_DESCRIPTION(DRV_DESC
" " DRV_VER
);
24 MODULE_AUTHOR("ServerEngines Corporation");
25 MODULE_LICENSE("GPL");
27 static unsigned int rx_frag_size
= 2048;
28 module_param(rx_frag_size
, uint
, S_IRUGO
);
29 MODULE_PARM_DESC(rx_frag_size
, "Size of a fragment that holds rcvd data.");
31 static DEFINE_PCI_DEVICE_TABLE(be_dev_ids
) = {
32 { PCI_DEVICE(BE_VENDOR_ID
, BE_DEVICE_ID1
) },
33 { PCI_DEVICE(BE_VENDOR_ID
, OC_DEVICE_ID1
) },
34 { PCI_DEVICE(BE_VENDOR_ID
, OC_DEVICE_ID2
) },
37 MODULE_DEVICE_TABLE(pci
, be_dev_ids
);
39 static void be_queue_free(struct be_adapter
*adapter
, struct be_queue_info
*q
)
41 struct be_dma_mem
*mem
= &q
->dma_mem
;
43 pci_free_consistent(adapter
->pdev
, mem
->size
,
47 static int be_queue_alloc(struct be_adapter
*adapter
, struct be_queue_info
*q
,
48 u16 len
, u16 entry_size
)
50 struct be_dma_mem
*mem
= &q
->dma_mem
;
52 memset(q
, 0, sizeof(*q
));
54 q
->entry_size
= entry_size
;
55 mem
->size
= len
* entry_size
;
56 mem
->va
= pci_alloc_consistent(adapter
->pdev
, mem
->size
, &mem
->dma
);
59 memset(mem
->va
, 0, mem
->size
);
63 static void be_intr_set(struct be_ctrl_info
*ctrl
, bool enable
)
65 u8 __iomem
*addr
= ctrl
->pcicfg
+ PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET
;
66 u32 reg
= ioread32(addr
);
67 u32 enabled
= reg
& MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK
;
68 if (!enabled
&& enable
) {
69 reg
|= MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK
;
70 } else if (enabled
&& !enable
) {
71 reg
&= ~MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK
;
73 printk(KERN_WARNING DRV_NAME
74 ": bad value in membar_int_ctrl reg=0x%x\n", reg
);
80 static void be_rxq_notify(struct be_ctrl_info
*ctrl
, u16 qid
, u16 posted
)
83 val
|= qid
& DB_RQ_RING_ID_MASK
;
84 val
|= posted
<< DB_RQ_NUM_POSTED_SHIFT
;
85 iowrite32(val
, ctrl
->db
+ DB_RQ_OFFSET
);
88 static void be_txq_notify(struct be_ctrl_info
*ctrl
, 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
, ctrl
->db
+ DB_TXULP1_OFFSET
);
96 static void be_eq_notify(struct be_ctrl_info
*ctrl
, 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
, ctrl
->db
+ DB_EQ_OFFSET
);
110 void be_cq_notify(struct be_ctrl_info
*ctrl
, u16 qid
,
111 bool arm
, u16 num_popped
)
114 val
|= qid
& DB_CQ_RING_ID_MASK
;
116 val
|= 1 << DB_CQ_REARM_SHIFT
;
117 val
|= num_popped
<< DB_CQ_NUM_POPPED_SHIFT
;
118 iowrite32(val
, ctrl
->db
+ DB_CQ_OFFSET
);
122 static int be_mac_addr_set(struct net_device
*netdev
, void *p
)
124 struct be_adapter
*adapter
= netdev_priv(netdev
);
125 struct sockaddr
*addr
= p
;
128 if (netif_running(netdev
)) {
129 status
= be_cmd_pmac_del(&adapter
->ctrl
, adapter
->if_handle
,
134 status
= be_cmd_pmac_add(&adapter
->ctrl
, (u8
*)addr
->sa_data
,
135 adapter
->if_handle
, &adapter
->pmac_id
);
139 memcpy(netdev
->dev_addr
, addr
->sa_data
, netdev
->addr_len
);
144 static void netdev_stats_update(struct be_adapter
*adapter
)
146 struct be_hw_stats
*hw_stats
= hw_stats_from_cmd(adapter
->stats
.cmd
.va
);
147 struct be_rxf_stats
*rxf_stats
= &hw_stats
->rxf
;
148 struct be_port_rxf_stats
*port_stats
=
149 &rxf_stats
->port
[adapter
->port_num
];
150 struct net_device_stats
*dev_stats
= &adapter
->stats
.net_stats
;
151 struct be_erx_stats
*erx_stats
= &hw_stats
->erx
;
153 dev_stats
->rx_packets
= port_stats
->rx_total_frames
;
154 dev_stats
->tx_packets
= port_stats
->tx_unicastframes
+
155 port_stats
->tx_multicastframes
+ port_stats
->tx_broadcastframes
;
156 dev_stats
->rx_bytes
= (u64
) port_stats
->rx_bytes_msd
<< 32 |
157 (u64
) port_stats
->rx_bytes_lsd
;
158 dev_stats
->tx_bytes
= (u64
) port_stats
->tx_bytes_msd
<< 32 |
159 (u64
) port_stats
->tx_bytes_lsd
;
161 /* bad pkts received */
162 dev_stats
->rx_errors
= port_stats
->rx_crc_errors
+
163 port_stats
->rx_alignment_symbol_errors
+
164 port_stats
->rx_in_range_errors
+
165 port_stats
->rx_out_range_errors
+
166 port_stats
->rx_frame_too_long
+
167 port_stats
->rx_dropped_too_small
+
168 port_stats
->rx_dropped_too_short
+
169 port_stats
->rx_dropped_header_too_small
+
170 port_stats
->rx_dropped_tcp_length
+
171 port_stats
->rx_dropped_runt
+
172 port_stats
->rx_tcp_checksum_errs
+
173 port_stats
->rx_ip_checksum_errs
+
174 port_stats
->rx_udp_checksum_errs
;
176 /* no space in linux buffers: best possible approximation */
177 dev_stats
->rx_dropped
= erx_stats
->rx_drops_no_fragments
[0];
179 /* detailed rx errors */
180 dev_stats
->rx_length_errors
= port_stats
->rx_in_range_errors
+
181 port_stats
->rx_out_range_errors
+
182 port_stats
->rx_frame_too_long
;
184 /* receive ring buffer overflow */
185 dev_stats
->rx_over_errors
= 0;
187 dev_stats
->rx_crc_errors
= port_stats
->rx_crc_errors
;
189 /* frame alignment errors */
190 dev_stats
->rx_frame_errors
= port_stats
->rx_alignment_symbol_errors
;
192 /* receiver fifo overrun */
193 /* drops_no_pbuf is no per i/f, it's per BE card */
194 dev_stats
->rx_fifo_errors
= port_stats
->rx_fifo_overflow
+
195 port_stats
->rx_input_fifo_overflow
+
196 rxf_stats
->rx_drops_no_pbuf
;
197 /* receiver missed packetd */
198 dev_stats
->rx_missed_errors
= 0;
200 /* packet transmit problems */
201 dev_stats
->tx_errors
= 0;
203 /* no space available in linux */
204 dev_stats
->tx_dropped
= 0;
206 dev_stats
->multicast
= port_stats
->tx_multicastframes
;
207 dev_stats
->collisions
= 0;
209 /* detailed tx_errors */
210 dev_stats
->tx_aborted_errors
= 0;
211 dev_stats
->tx_carrier_errors
= 0;
212 dev_stats
->tx_fifo_errors
= 0;
213 dev_stats
->tx_heartbeat_errors
= 0;
214 dev_stats
->tx_window_errors
= 0;
217 void be_link_status_update(void *ctxt
, bool link_up
)
219 struct be_adapter
*adapter
= ctxt
;
220 struct net_device
*netdev
= adapter
->netdev
;
222 /* If link came up or went down */
223 if (adapter
->link_up
!= link_up
) {
225 netif_start_queue(netdev
);
226 netif_carrier_on(netdev
);
227 printk(KERN_INFO
"%s: Link up\n", netdev
->name
);
229 netif_stop_queue(netdev
);
230 netif_carrier_off(netdev
);
231 printk(KERN_INFO
"%s: Link down\n", netdev
->name
);
233 adapter
->link_up
= link_up
;
237 /* Update the EQ delay n BE based on the RX frags consumed / sec */
238 static void be_rx_eqd_update(struct be_adapter
*adapter
)
240 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
241 struct be_eq_obj
*rx_eq
= &adapter
->rx_eq
;
242 struct be_drvr_stats
*stats
= &adapter
->stats
.drvr_stats
;
246 if (!rx_eq
->enable_aic
)
250 if (time_before(now
, stats
->rx_fps_jiffies
)) {
251 stats
->rx_fps_jiffies
= now
;
255 /* Update once a second */
256 if ((now
- stats
->rx_fps_jiffies
) < HZ
)
259 stats
->be_rx_fps
= (stats
->be_rx_frags
- stats
->be_prev_rx_frags
) /
260 ((now
- stats
->rx_fps_jiffies
) / HZ
);
262 stats
->rx_fps_jiffies
= now
;
263 stats
->be_prev_rx_frags
= stats
->be_rx_frags
;
264 eqd
= stats
->be_rx_fps
/ 110000;
266 if (eqd
> rx_eq
->max_eqd
)
267 eqd
= rx_eq
->max_eqd
;
268 if (eqd
< rx_eq
->min_eqd
)
269 eqd
= rx_eq
->min_eqd
;
272 if (eqd
!= rx_eq
->cur_eqd
)
273 be_cmd_modify_eqd(ctrl
, rx_eq
->q
.id
, eqd
);
275 rx_eq
->cur_eqd
= eqd
;
278 static struct net_device_stats
*be_get_stats(struct net_device
*dev
)
280 struct be_adapter
*adapter
= netdev_priv(dev
);
282 return &adapter
->stats
.net_stats
;
285 static u32
be_calc_rate(u64 bytes
, unsigned long ticks
)
289 do_div(rate
, ticks
/ HZ
);
290 rate
<<= 3; /* bytes/sec -> bits/sec */
291 do_div(rate
, 1000000ul); /* MB/Sec */
296 static void be_tx_rate_update(struct be_adapter
*adapter
)
298 struct be_drvr_stats
*stats
= drvr_stats(adapter
);
301 /* Wrapped around? */
302 if (time_before(now
, stats
->be_tx_jiffies
)) {
303 stats
->be_tx_jiffies
= now
;
307 /* Update tx rate once in two seconds */
308 if ((now
- stats
->be_tx_jiffies
) > 2 * HZ
) {
309 stats
->be_tx_rate
= be_calc_rate(stats
->be_tx_bytes
310 - stats
->be_tx_bytes_prev
,
311 now
- stats
->be_tx_jiffies
);
312 stats
->be_tx_jiffies
= now
;
313 stats
->be_tx_bytes_prev
= stats
->be_tx_bytes
;
317 static void be_tx_stats_update(struct be_adapter
*adapter
,
318 u32 wrb_cnt
, u32 copied
, bool stopped
)
320 struct be_drvr_stats
*stats
= drvr_stats(adapter
);
322 stats
->be_tx_wrbs
+= wrb_cnt
;
323 stats
->be_tx_bytes
+= copied
;
325 stats
->be_tx_stops
++;
328 /* Determine number of WRB entries needed to xmit data in an skb */
329 static u32
wrb_cnt_for_skb(struct sk_buff
*skb
, bool *dummy
)
331 int cnt
= (skb
->len
> skb
->data_len
);
333 cnt
+= skb_shinfo(skb
)->nr_frags
;
335 /* to account for hdr wrb */
338 /* add a dummy to make it an even num */
343 BUG_ON(cnt
> BE_MAX_TX_FRAG_COUNT
);
347 static inline void wrb_fill(struct be_eth_wrb
*wrb
, u64 addr
, int len
)
349 wrb
->frag_pa_hi
= upper_32_bits(addr
);
350 wrb
->frag_pa_lo
= addr
& 0xFFFFFFFF;
351 wrb
->frag_len
= len
& ETH_WRB_FRAG_LEN_MASK
;
354 static void wrb_fill_hdr(struct be_eth_hdr_wrb
*hdr
, struct sk_buff
*skb
,
355 bool vlan
, u32 wrb_cnt
, u32 len
)
357 memset(hdr
, 0, sizeof(*hdr
));
359 AMAP_SET_BITS(struct amap_eth_hdr_wrb
, crc
, hdr
, 1);
361 if (skb_shinfo(skb
)->gso_segs
> 1 && skb_shinfo(skb
)->gso_size
) {
362 AMAP_SET_BITS(struct amap_eth_hdr_wrb
, lso
, hdr
, 1);
363 AMAP_SET_BITS(struct amap_eth_hdr_wrb
, lso_mss
,
364 hdr
, skb_shinfo(skb
)->gso_size
);
365 } else if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
367 AMAP_SET_BITS(struct amap_eth_hdr_wrb
, tcpcs
, hdr
, 1);
368 else if (is_udp_pkt(skb
))
369 AMAP_SET_BITS(struct amap_eth_hdr_wrb
, udpcs
, hdr
, 1);
372 if (vlan
&& vlan_tx_tag_present(skb
)) {
373 AMAP_SET_BITS(struct amap_eth_hdr_wrb
, vlan
, hdr
, 1);
374 AMAP_SET_BITS(struct amap_eth_hdr_wrb
, vlan_tag
,
375 hdr
, vlan_tx_tag_get(skb
));
378 AMAP_SET_BITS(struct amap_eth_hdr_wrb
, event
, hdr
, 1);
379 AMAP_SET_BITS(struct amap_eth_hdr_wrb
, complete
, hdr
, 1);
380 AMAP_SET_BITS(struct amap_eth_hdr_wrb
, num_wrb
, hdr
, wrb_cnt
);
381 AMAP_SET_BITS(struct amap_eth_hdr_wrb
, len
, hdr
, len
);
385 static int make_tx_wrbs(struct be_adapter
*adapter
,
386 struct sk_buff
*skb
, u32 wrb_cnt
, bool dummy_wrb
)
390 struct pci_dev
*pdev
= adapter
->pdev
;
391 struct sk_buff
*first_skb
= skb
;
392 struct be_queue_info
*txq
= &adapter
->tx_obj
.q
;
393 struct be_eth_wrb
*wrb
;
394 struct be_eth_hdr_wrb
*hdr
;
396 atomic_add(wrb_cnt
, &txq
->used
);
397 hdr
= queue_head_node(txq
);
400 if (skb
->len
> skb
->data_len
) {
401 int len
= skb
->len
- skb
->data_len
;
402 busaddr
= pci_map_single(pdev
, skb
->data
, len
,
404 wrb
= queue_head_node(txq
);
405 wrb_fill(wrb
, busaddr
, len
);
406 be_dws_cpu_to_le(wrb
, sizeof(*wrb
));
411 for (i
= 0; i
< skb_shinfo(skb
)->nr_frags
; i
++) {
412 struct skb_frag_struct
*frag
=
413 &skb_shinfo(skb
)->frags
[i
];
414 busaddr
= pci_map_page(pdev
, frag
->page
,
416 frag
->size
, PCI_DMA_TODEVICE
);
417 wrb
= queue_head_node(txq
);
418 wrb_fill(wrb
, busaddr
, frag
->size
);
419 be_dws_cpu_to_le(wrb
, sizeof(*wrb
));
421 copied
+= frag
->size
;
425 wrb
= queue_head_node(txq
);
427 be_dws_cpu_to_le(wrb
, sizeof(*wrb
));
431 wrb_fill_hdr(hdr
, first_skb
, adapter
->vlan_grp
? true : false,
433 be_dws_cpu_to_le(hdr
, sizeof(*hdr
));
438 static int be_xmit(struct sk_buff
*skb
, struct net_device
*netdev
)
440 struct be_adapter
*adapter
= netdev_priv(netdev
);
441 struct be_tx_obj
*tx_obj
= &adapter
->tx_obj
;
442 struct be_queue_info
*txq
= &tx_obj
->q
;
443 u32 wrb_cnt
= 0, copied
= 0;
444 u32 start
= txq
->head
;
445 bool dummy_wrb
, stopped
= false;
447 wrb_cnt
= wrb_cnt_for_skb(skb
, &dummy_wrb
);
449 copied
= make_tx_wrbs(adapter
, skb
, wrb_cnt
, dummy_wrb
);
451 /* record the sent skb in the sent_skb table */
452 BUG_ON(tx_obj
->sent_skb_list
[start
]);
453 tx_obj
->sent_skb_list
[start
] = skb
;
455 /* Ensure that txq has space for the next skb; Else stop the queue
456 * *BEFORE* ringing the tx doorbell, so that we serialze the
457 * tx compls of the current transmit which'll wake up the queue
459 if ((BE_MAX_TX_FRAG_COUNT
+ atomic_read(&txq
->used
)) >= txq
->len
) {
460 netif_stop_queue(netdev
);
464 be_txq_notify(&adapter
->ctrl
, txq
->id
, wrb_cnt
);
466 be_tx_stats_update(adapter
, wrb_cnt
, copied
, stopped
);
470 static int be_change_mtu(struct net_device
*netdev
, int new_mtu
)
472 struct be_adapter
*adapter
= netdev_priv(netdev
);
473 if (new_mtu
< BE_MIN_MTU
||
474 new_mtu
> BE_MAX_JUMBO_FRAME_SIZE
) {
475 dev_info(&adapter
->pdev
->dev
,
476 "MTU must be between %d and %d bytes\n",
477 BE_MIN_MTU
, BE_MAX_JUMBO_FRAME_SIZE
);
480 dev_info(&adapter
->pdev
->dev
, "MTU changed from %d to %d bytes\n",
481 netdev
->mtu
, new_mtu
);
482 netdev
->mtu
= new_mtu
;
487 * if there are BE_NUM_VLANS_SUPPORTED or lesser number of VLANS configured,
488 * program them in BE. If more than BE_NUM_VLANS_SUPPORTED are configured,
489 * set the BE in promiscuous VLAN mode.
491 static void be_vid_config(struct net_device
*netdev
)
493 struct be_adapter
*adapter
= netdev_priv(netdev
);
494 u16 vtag
[BE_NUM_VLANS_SUPPORTED
];
497 if (adapter
->num_vlans
<= BE_NUM_VLANS_SUPPORTED
) {
498 /* Construct VLAN Table to give to HW */
499 for (i
= 0; i
< VLAN_GROUP_ARRAY_LEN
; i
++) {
500 if (adapter
->vlan_tag
[i
]) {
501 vtag
[ntags
] = cpu_to_le16(i
);
505 be_cmd_vlan_config(&adapter
->ctrl
, adapter
->if_handle
,
508 be_cmd_vlan_config(&adapter
->ctrl
, 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
;
518 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
520 be_eq_notify(ctrl
, rx_eq
->q
.id
, false, false, 0);
521 be_eq_notify(ctrl
, tx_eq
->q
.id
, false, false, 0);
522 adapter
->vlan_grp
= grp
;
523 be_eq_notify(ctrl
, rx_eq
->q
.id
, true, false, 0);
524 be_eq_notify(ctrl
, tx_eq
->q
.id
, true, false, 0);
527 static void be_vlan_add_vid(struct net_device
*netdev
, u16 vid
)
529 struct be_adapter
*adapter
= netdev_priv(netdev
);
531 adapter
->num_vlans
++;
532 adapter
->vlan_tag
[vid
] = 1;
534 be_vid_config(netdev
);
537 static void be_vlan_rem_vid(struct net_device
*netdev
, u16 vid
)
539 struct be_adapter
*adapter
= netdev_priv(netdev
);
541 adapter
->num_vlans
--;
542 adapter
->vlan_tag
[vid
] = 0;
544 vlan_group_set_device(adapter
->vlan_grp
, vid
, NULL
);
545 be_vid_config(netdev
);
548 static void be_set_multicast_list(struct net_device
*netdev
)
550 struct be_adapter
*adapter
= netdev_priv(netdev
);
551 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
553 if (netdev
->flags
& IFF_PROMISC
) {
554 be_cmd_promiscuous_config(ctrl
, adapter
->port_num
, 1);
555 adapter
->promiscuous
= true;
559 /* BE was previously in promiscous mode; disable it */
560 if (adapter
->promiscuous
) {
561 adapter
->promiscuous
= false;
562 be_cmd_promiscuous_config(ctrl
, adapter
->port_num
, 0);
565 if (netdev
->flags
& IFF_ALLMULTI
) {
566 be_cmd_multicast_set(ctrl
, adapter
->if_handle
, NULL
, 0);
570 be_cmd_multicast_set(ctrl
, adapter
->if_handle
, netdev
->mc_list
,
576 static void be_rx_rate_update(struct be_adapter
*adapter
)
578 struct be_drvr_stats
*stats
= drvr_stats(adapter
);
582 if (time_before(now
, stats
->be_rx_jiffies
)) {
583 stats
->be_rx_jiffies
= now
;
587 /* Update the rate once in two seconds */
588 if ((now
- stats
->be_rx_jiffies
) < 2 * HZ
)
591 stats
->be_rx_rate
= be_calc_rate(stats
->be_rx_bytes
592 - stats
->be_rx_bytes_prev
,
593 now
- stats
->be_rx_jiffies
);
594 stats
->be_rx_jiffies
= now
;
595 stats
->be_rx_bytes_prev
= stats
->be_rx_bytes
;
598 static void be_rx_stats_update(struct be_adapter
*adapter
,
599 u32 pktsize
, u16 numfrags
)
601 struct be_drvr_stats
*stats
= drvr_stats(adapter
);
603 stats
->be_rx_compl
++;
604 stats
->be_rx_frags
+= numfrags
;
605 stats
->be_rx_bytes
+= pktsize
;
608 static inline bool do_pkt_csum(struct be_eth_rx_compl
*rxcp
, bool cso
)
610 u8 l4_cksm
, ip_version
, ipcksm
, tcpf
= 0, udpf
= 0, ipv6_chk
;
612 l4_cksm
= AMAP_GET_BITS(struct amap_eth_rx_compl
, l4_cksm
, rxcp
);
613 ipcksm
= AMAP_GET_BITS(struct amap_eth_rx_compl
, ipcksm
, rxcp
);
614 ip_version
= AMAP_GET_BITS(struct amap_eth_rx_compl
, ip_version
, rxcp
);
616 tcpf
= AMAP_GET_BITS(struct amap_eth_rx_compl
, tcpf
, rxcp
);
617 udpf
= AMAP_GET_BITS(struct amap_eth_rx_compl
, udpf
, rxcp
);
619 ipv6_chk
= (ip_version
&& (tcpf
|| udpf
));
621 return ((l4_cksm
&& ipv6_chk
&& ipcksm
) && cso
) ? false : true;
624 static struct be_rx_page_info
*
625 get_rx_page_info(struct be_adapter
*adapter
, u16 frag_idx
)
627 struct be_rx_page_info
*rx_page_info
;
628 struct be_queue_info
*rxq
= &adapter
->rx_obj
.q
;
630 rx_page_info
= &adapter
->rx_obj
.page_info_tbl
[frag_idx
];
631 BUG_ON(!rx_page_info
->page
);
633 if (rx_page_info
->last_page_user
)
634 pci_unmap_page(adapter
->pdev
, pci_unmap_addr(rx_page_info
, bus
),
635 adapter
->big_page_size
, PCI_DMA_FROMDEVICE
);
637 atomic_dec(&rxq
->used
);
641 /* Throwaway the data in the Rx completion */
642 static void be_rx_compl_discard(struct be_adapter
*adapter
,
643 struct be_eth_rx_compl
*rxcp
)
645 struct be_queue_info
*rxq
= &adapter
->rx_obj
.q
;
646 struct be_rx_page_info
*page_info
;
647 u16 rxq_idx
, i
, num_rcvd
;
649 rxq_idx
= AMAP_GET_BITS(struct amap_eth_rx_compl
, fragndx
, rxcp
);
650 num_rcvd
= AMAP_GET_BITS(struct amap_eth_rx_compl
, numfrags
, rxcp
);
652 for (i
= 0; i
< num_rcvd
; i
++) {
653 page_info
= get_rx_page_info(adapter
, rxq_idx
);
654 put_page(page_info
->page
);
655 memset(page_info
, 0, sizeof(*page_info
));
656 index_inc(&rxq_idx
, rxq
->len
);
661 * skb_fill_rx_data forms a complete skb for an ether frame
664 static void skb_fill_rx_data(struct be_adapter
*adapter
,
665 struct sk_buff
*skb
, struct be_eth_rx_compl
*rxcp
)
667 struct be_queue_info
*rxq
= &adapter
->rx_obj
.q
;
668 struct be_rx_page_info
*page_info
;
669 u16 rxq_idx
, i
, num_rcvd
, j
;
670 u32 pktsize
, hdr_len
, curr_frag_len
, size
;
673 rxq_idx
= AMAP_GET_BITS(struct amap_eth_rx_compl
, fragndx
, rxcp
);
674 pktsize
= AMAP_GET_BITS(struct amap_eth_rx_compl
, pktsize
, rxcp
);
675 num_rcvd
= AMAP_GET_BITS(struct amap_eth_rx_compl
, numfrags
, rxcp
);
677 page_info
= get_rx_page_info(adapter
, rxq_idx
);
679 start
= page_address(page_info
->page
) + page_info
->page_offset
;
682 /* Copy data in the first descriptor of this completion */
683 curr_frag_len
= min(pktsize
, rx_frag_size
);
685 /* Copy the header portion into skb_data */
686 hdr_len
= min((u32
)BE_HDR_LEN
, curr_frag_len
);
687 memcpy(skb
->data
, start
, hdr_len
);
688 skb
->len
= curr_frag_len
;
689 if (curr_frag_len
<= BE_HDR_LEN
) { /* tiny packet */
690 /* Complete packet has now been moved to data */
691 put_page(page_info
->page
);
693 skb
->tail
+= curr_frag_len
;
695 skb_shinfo(skb
)->nr_frags
= 1;
696 skb_shinfo(skb
)->frags
[0].page
= page_info
->page
;
697 skb_shinfo(skb
)->frags
[0].page_offset
=
698 page_info
->page_offset
+ hdr_len
;
699 skb_shinfo(skb
)->frags
[0].size
= curr_frag_len
- hdr_len
;
700 skb
->data_len
= curr_frag_len
- hdr_len
;
701 skb
->tail
+= hdr_len
;
703 memset(page_info
, 0, sizeof(*page_info
));
705 if (pktsize
<= rx_frag_size
) {
706 BUG_ON(num_rcvd
!= 1);
710 /* More frags present for this completion */
712 for (i
= 1, j
= 0; i
< num_rcvd
; i
++) {
713 size
-= curr_frag_len
;
714 index_inc(&rxq_idx
, rxq
->len
);
715 page_info
= get_rx_page_info(adapter
, rxq_idx
);
717 curr_frag_len
= min(size
, rx_frag_size
);
719 /* Coalesce all frags from the same physical page in one slot */
720 if (page_info
->page_offset
== 0) {
723 skb_shinfo(skb
)->frags
[j
].page
= page_info
->page
;
724 skb_shinfo(skb
)->frags
[j
].page_offset
=
725 page_info
->page_offset
;
726 skb_shinfo(skb
)->frags
[j
].size
= 0;
727 skb_shinfo(skb
)->nr_frags
++;
729 put_page(page_info
->page
);
732 skb_shinfo(skb
)->frags
[j
].size
+= curr_frag_len
;
733 skb
->len
+= curr_frag_len
;
734 skb
->data_len
+= curr_frag_len
;
736 memset(page_info
, 0, sizeof(*page_info
));
738 BUG_ON(j
> MAX_SKB_FRAGS
);
741 be_rx_stats_update(adapter
, pktsize
, num_rcvd
);
745 /* Process the RX completion indicated by rxcp when LRO is disabled */
746 static void be_rx_compl_process(struct be_adapter
*adapter
,
747 struct be_eth_rx_compl
*rxcp
)
752 vtp
= AMAP_GET_BITS(struct amap_eth_rx_compl
, vtp
, rxcp
);
754 skb
= netdev_alloc_skb(adapter
->netdev
, BE_HDR_LEN
+ NET_IP_ALIGN
);
757 dev_warn(&adapter
->pdev
->dev
, "skb alloc failed\n");
758 be_rx_compl_discard(adapter
, rxcp
);
762 skb_reserve(skb
, NET_IP_ALIGN
);
764 skb_fill_rx_data(adapter
, skb
, rxcp
);
766 if (do_pkt_csum(rxcp
, adapter
->rx_csum
))
767 skb
->ip_summed
= CHECKSUM_NONE
;
769 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
771 skb
->truesize
= skb
->len
+ sizeof(struct sk_buff
);
772 skb
->protocol
= eth_type_trans(skb
, adapter
->netdev
);
773 skb
->dev
= adapter
->netdev
;
776 if (!adapter
->vlan_grp
|| adapter
->num_vlans
== 0) {
780 vid
= AMAP_GET_BITS(struct amap_eth_rx_compl
, vlan_tag
, rxcp
);
781 vid
= be16_to_cpu(vid
);
782 vlan_hwaccel_receive_skb(skb
, adapter
->vlan_grp
, vid
);
784 netif_receive_skb(skb
);
787 adapter
->netdev
->last_rx
= jiffies
;
792 /* Process the RX completion indicated by rxcp when LRO is enabled */
793 static void be_rx_compl_process_lro(struct be_adapter
*adapter
,
794 struct be_eth_rx_compl
*rxcp
)
796 struct be_rx_page_info
*page_info
;
797 struct skb_frag_struct rx_frags
[BE_MAX_FRAGS_PER_FRAME
];
798 struct be_queue_info
*rxq
= &adapter
->rx_obj
.q
;
799 u32 num_rcvd
, pkt_size
, remaining
, vlanf
, curr_frag_len
;
800 u16 i
, rxq_idx
= 0, vid
, j
;
802 num_rcvd
= AMAP_GET_BITS(struct amap_eth_rx_compl
, numfrags
, rxcp
);
803 pkt_size
= AMAP_GET_BITS(struct amap_eth_rx_compl
, pktsize
, rxcp
);
804 vlanf
= AMAP_GET_BITS(struct amap_eth_rx_compl
, vtp
, rxcp
);
805 rxq_idx
= AMAP_GET_BITS(struct amap_eth_rx_compl
, fragndx
, rxcp
);
807 remaining
= pkt_size
;
808 for (i
= 0, j
= -1; i
< num_rcvd
; i
++) {
809 page_info
= get_rx_page_info(adapter
, rxq_idx
);
811 curr_frag_len
= min(remaining
, rx_frag_size
);
813 /* Coalesce all frags from the same physical page in one slot */
814 if (i
== 0 || page_info
->page_offset
== 0) {
815 /* First frag or Fresh page */
817 rx_frags
[j
].page
= page_info
->page
;
818 rx_frags
[j
].page_offset
= page_info
->page_offset
;
819 rx_frags
[j
].size
= 0;
821 put_page(page_info
->page
);
823 rx_frags
[j
].size
+= curr_frag_len
;
825 remaining
-= curr_frag_len
;
826 index_inc(&rxq_idx
, rxq
->len
);
827 memset(page_info
, 0, sizeof(*page_info
));
829 BUG_ON(j
> MAX_SKB_FRAGS
);
831 if (likely(!vlanf
)) {
832 lro_receive_frags(&adapter
->rx_obj
.lro_mgr
, rx_frags
, pkt_size
,
835 vid
= AMAP_GET_BITS(struct amap_eth_rx_compl
, vlan_tag
, rxcp
);
836 vid
= be16_to_cpu(vid
);
838 if (!adapter
->vlan_grp
|| adapter
->num_vlans
== 0)
841 lro_vlan_hwaccel_receive_frags(&adapter
->rx_obj
.lro_mgr
,
842 rx_frags
, pkt_size
, pkt_size
, adapter
->vlan_grp
,
846 be_rx_stats_update(adapter
, pkt_size
, num_rcvd
);
850 static struct be_eth_rx_compl
*be_rx_compl_get(struct be_adapter
*adapter
)
852 struct be_eth_rx_compl
*rxcp
= queue_tail_node(&adapter
->rx_obj
.cq
);
854 if (rxcp
->dw
[offsetof(struct amap_eth_rx_compl
, valid
) / 32] == 0)
857 be_dws_le_to_cpu(rxcp
, sizeof(*rxcp
));
859 queue_tail_inc(&adapter
->rx_obj
.cq
);
863 /* To reset the valid bit, we need to reset the whole word as
864 * when walking the queue the valid entries are little-endian
865 * and invalid entries are host endian
867 static inline void be_rx_compl_reset(struct be_eth_rx_compl
*rxcp
)
869 rxcp
->dw
[offsetof(struct amap_eth_rx_compl
, valid
) / 32] = 0;
872 static inline struct page
*be_alloc_pages(u32 size
)
874 gfp_t alloc_flags
= GFP_ATOMIC
;
875 u32 order
= get_order(size
);
877 alloc_flags
|= __GFP_COMP
;
878 return alloc_pages(alloc_flags
, order
);
882 * Allocate a page, split it to fragments of size rx_frag_size and post as
883 * receive buffers to BE
885 static void be_post_rx_frags(struct be_adapter
*adapter
)
887 struct be_rx_page_info
*page_info_tbl
= adapter
->rx_obj
.page_info_tbl
;
888 struct be_rx_page_info
*page_info
= NULL
;
889 struct be_queue_info
*rxq
= &adapter
->rx_obj
.q
;
890 struct page
*pagep
= NULL
;
891 struct be_eth_rx_d
*rxd
;
892 u64 page_dmaaddr
= 0, frag_dmaaddr
;
893 u32 posted
, page_offset
= 0;
895 page_info
= &page_info_tbl
[rxq
->head
];
896 for (posted
= 0; posted
< MAX_RX_POST
&& !page_info
->page
; posted
++) {
898 pagep
= be_alloc_pages(adapter
->big_page_size
);
899 if (unlikely(!pagep
)) {
900 drvr_stats(adapter
)->be_ethrx_post_fail
++;
903 page_dmaaddr
= pci_map_page(adapter
->pdev
, pagep
, 0,
904 adapter
->big_page_size
,
906 page_info
->page_offset
= 0;
909 page_info
->page_offset
= page_offset
+ rx_frag_size
;
911 page_offset
= page_info
->page_offset
;
912 page_info
->page
= pagep
;
913 pci_unmap_addr_set(page_info
, bus
, page_dmaaddr
);
914 frag_dmaaddr
= page_dmaaddr
+ page_info
->page_offset
;
916 rxd
= queue_head_node(rxq
);
917 rxd
->fragpa_lo
= cpu_to_le32(frag_dmaaddr
& 0xFFFFFFFF);
918 rxd
->fragpa_hi
= cpu_to_le32(upper_32_bits(frag_dmaaddr
));
921 /* Any space left in the current big page for another frag? */
922 if ((page_offset
+ rx_frag_size
+ rx_frag_size
) >
923 adapter
->big_page_size
) {
925 page_info
->last_page_user
= true;
927 page_info
= &page_info_tbl
[rxq
->head
];
930 page_info
->last_page_user
= true;
933 atomic_add(posted
, &rxq
->used
);
934 be_rxq_notify(&adapter
->ctrl
, rxq
->id
, posted
);
935 } else if (atomic_read(&rxq
->used
) == 0) {
936 /* Let be_worker replenish when memory is available */
937 adapter
->rx_post_starved
= true;
943 static struct be_eth_tx_compl
*be_tx_compl_get(struct be_queue_info
*tx_cq
)
945 struct be_eth_tx_compl
*txcp
= queue_tail_node(tx_cq
);
947 if (txcp
->dw
[offsetof(struct amap_eth_tx_compl
, valid
) / 32] == 0)
950 be_dws_le_to_cpu(txcp
, sizeof(*txcp
));
952 txcp
->dw
[offsetof(struct amap_eth_tx_compl
, valid
) / 32] = 0;
954 queue_tail_inc(tx_cq
);
958 static void be_tx_compl_process(struct be_adapter
*adapter
, u16 last_index
)
960 struct be_queue_info
*txq
= &adapter
->tx_obj
.q
;
961 struct be_eth_wrb
*wrb
;
962 struct sk_buff
**sent_skbs
= adapter
->tx_obj
.sent_skb_list
;
963 struct sk_buff
*sent_skb
;
965 u16 cur_index
, num_wrbs
= 0;
967 cur_index
= txq
->tail
;
968 sent_skb
= sent_skbs
[cur_index
];
970 sent_skbs
[cur_index
] = NULL
;
973 cur_index
= txq
->tail
;
974 wrb
= queue_tail_node(txq
);
975 be_dws_le_to_cpu(wrb
, sizeof(*wrb
));
976 busaddr
= ((u64
)wrb
->frag_pa_hi
<< 32) | (u64
)wrb
->frag_pa_lo
;
978 pci_unmap_single(adapter
->pdev
, busaddr
,
979 wrb
->frag_len
, PCI_DMA_TODEVICE
);
983 } while (cur_index
!= last_index
);
985 atomic_sub(num_wrbs
, &txq
->used
);
990 static void be_rx_q_clean(struct be_adapter
*adapter
)
992 struct be_rx_page_info
*page_info
;
993 struct be_queue_info
*rxq
= &adapter
->rx_obj
.q
;
994 struct be_queue_info
*rx_cq
= &adapter
->rx_obj
.cq
;
995 struct be_eth_rx_compl
*rxcp
;
998 /* First cleanup pending rx completions */
999 while ((rxcp
= be_rx_compl_get(adapter
)) != NULL
) {
1000 be_rx_compl_discard(adapter
, rxcp
);
1001 be_rx_compl_reset(rxcp
);
1002 be_cq_notify(&adapter
->ctrl
, rx_cq
->id
, true, 1);
1005 /* Then free posted rx buffer that were not used */
1006 tail
= (rxq
->head
+ rxq
->len
- atomic_read(&rxq
->used
)) % rxq
->len
;
1007 for (; tail
!= rxq
->head
; index_inc(&tail
, rxq
->len
)) {
1008 page_info
= get_rx_page_info(adapter
, tail
);
1009 put_page(page_info
->page
);
1010 memset(page_info
, 0, sizeof(*page_info
));
1012 BUG_ON(atomic_read(&rxq
->used
));
1015 static void be_tx_q_clean(struct be_adapter
*adapter
)
1017 struct sk_buff
**sent_skbs
= adapter
->tx_obj
.sent_skb_list
;
1018 struct sk_buff
*sent_skb
;
1019 struct be_queue_info
*txq
= &adapter
->tx_obj
.q
;
1023 while (atomic_read(&txq
->used
)) {
1024 sent_skb
= sent_skbs
[txq
->tail
];
1025 last_index
= txq
->tail
;
1026 index_adv(&last_index
,
1027 wrb_cnt_for_skb(sent_skb
, &dummy_wrb
) - 1, txq
->len
);
1028 be_tx_compl_process(adapter
, last_index
);
1032 static void be_mcc_queues_destroy(struct be_adapter
*adapter
)
1034 struct be_queue_info
*q
;
1035 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1037 q
= &ctrl
->mcc_obj
.q
;
1039 be_cmd_q_destroy(ctrl
, q
, QTYPE_MCCQ
);
1040 be_queue_free(adapter
, q
);
1042 q
= &ctrl
->mcc_obj
.cq
;
1044 be_cmd_q_destroy(ctrl
, q
, QTYPE_CQ
);
1045 be_queue_free(adapter
, q
);
1048 /* Must be called only after TX qs are created as MCC shares TX EQ */
1049 static int be_mcc_queues_create(struct be_adapter
*adapter
)
1051 struct be_queue_info
*q
, *cq
;
1052 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1054 /* Alloc MCC compl queue */
1055 cq
= &ctrl
->mcc_obj
.cq
;
1056 if (be_queue_alloc(adapter
, cq
, MCC_CQ_LEN
,
1057 sizeof(struct be_mcc_cq_entry
)))
1060 /* Ask BE to create MCC compl queue; share TX's eq */
1061 if (be_cmd_cq_create(ctrl
, cq
, &adapter
->tx_eq
.q
, false, true, 0))
1064 /* Alloc MCC queue */
1065 q
= &ctrl
->mcc_obj
.q
;
1066 if (be_queue_alloc(adapter
, q
, MCC_Q_LEN
, sizeof(struct be_mcc_wrb
)))
1067 goto mcc_cq_destroy
;
1069 /* Ask BE to create MCC queue */
1070 if (be_cmd_mccq_create(ctrl
, q
, cq
))
1076 be_queue_free(adapter
, q
);
1078 be_cmd_q_destroy(ctrl
, cq
, QTYPE_CQ
);
1080 be_queue_free(adapter
, cq
);
1085 static void be_tx_queues_destroy(struct be_adapter
*adapter
)
1087 struct be_queue_info
*q
;
1089 q
= &adapter
->tx_obj
.q
;
1091 be_cmd_q_destroy(&adapter
->ctrl
, q
, QTYPE_TXQ
);
1093 /* No more tx completions can be rcvd now; clean up if there
1094 * are any pending completions or pending tx requests */
1095 be_tx_q_clean(adapter
);
1097 be_queue_free(adapter
, q
);
1099 q
= &adapter
->tx_obj
.cq
;
1101 be_cmd_q_destroy(&adapter
->ctrl
, q
, QTYPE_CQ
);
1102 be_queue_free(adapter
, q
);
1104 q
= &adapter
->tx_eq
.q
;
1106 be_cmd_q_destroy(&adapter
->ctrl
, q
, QTYPE_EQ
);
1107 be_queue_free(adapter
, q
);
1110 static int be_tx_queues_create(struct be_adapter
*adapter
)
1112 struct be_queue_info
*eq
, *q
, *cq
;
1114 adapter
->tx_eq
.max_eqd
= 0;
1115 adapter
->tx_eq
.min_eqd
= 0;
1116 adapter
->tx_eq
.cur_eqd
= 96;
1117 adapter
->tx_eq
.enable_aic
= false;
1118 /* Alloc Tx Event queue */
1119 eq
= &adapter
->tx_eq
.q
;
1120 if (be_queue_alloc(adapter
, eq
, EVNT_Q_LEN
, sizeof(struct be_eq_entry
)))
1123 /* Ask BE to create Tx Event queue */
1124 if (be_cmd_eq_create(&adapter
->ctrl
, eq
, adapter
->tx_eq
.cur_eqd
))
1126 /* Alloc TX eth compl queue */
1127 cq
= &adapter
->tx_obj
.cq
;
1128 if (be_queue_alloc(adapter
, cq
, TX_CQ_LEN
,
1129 sizeof(struct be_eth_tx_compl
)))
1132 /* Ask BE to create Tx eth compl queue */
1133 if (be_cmd_cq_create(&adapter
->ctrl
, cq
, eq
, false, false, 3))
1136 /* Alloc TX eth queue */
1137 q
= &adapter
->tx_obj
.q
;
1138 if (be_queue_alloc(adapter
, q
, TX_Q_LEN
, sizeof(struct be_eth_wrb
)))
1141 /* Ask BE to create Tx eth queue */
1142 if (be_cmd_txq_create(&adapter
->ctrl
, q
, cq
))
1147 be_queue_free(adapter
, q
);
1149 be_cmd_q_destroy(&adapter
->ctrl
, cq
, QTYPE_CQ
);
1151 be_queue_free(adapter
, cq
);
1153 be_cmd_q_destroy(&adapter
->ctrl
, eq
, QTYPE_EQ
);
1155 be_queue_free(adapter
, eq
);
1159 static void be_rx_queues_destroy(struct be_adapter
*adapter
)
1161 struct be_queue_info
*q
;
1163 q
= &adapter
->rx_obj
.q
;
1165 be_cmd_q_destroy(&adapter
->ctrl
, q
, QTYPE_RXQ
);
1166 be_rx_q_clean(adapter
);
1168 be_queue_free(adapter
, q
);
1170 q
= &adapter
->rx_obj
.cq
;
1172 be_cmd_q_destroy(&adapter
->ctrl
, q
, QTYPE_CQ
);
1173 be_queue_free(adapter
, q
);
1175 q
= &adapter
->rx_eq
.q
;
1177 be_cmd_q_destroy(&adapter
->ctrl
, q
, QTYPE_EQ
);
1178 be_queue_free(adapter
, q
);
1181 static int be_rx_queues_create(struct be_adapter
*adapter
)
1183 struct be_queue_info
*eq
, *q
, *cq
;
1186 adapter
->max_rx_coal
= BE_MAX_FRAGS_PER_FRAME
;
1187 adapter
->big_page_size
= (1 << get_order(rx_frag_size
)) * PAGE_SIZE
;
1188 adapter
->rx_eq
.max_eqd
= BE_MAX_EQD
;
1189 adapter
->rx_eq
.min_eqd
= 0;
1190 adapter
->rx_eq
.cur_eqd
= 0;
1191 adapter
->rx_eq
.enable_aic
= true;
1193 /* Alloc Rx Event queue */
1194 eq
= &adapter
->rx_eq
.q
;
1195 rc
= be_queue_alloc(adapter
, eq
, EVNT_Q_LEN
,
1196 sizeof(struct be_eq_entry
));
1200 /* Ask BE to create Rx Event queue */
1201 rc
= be_cmd_eq_create(&adapter
->ctrl
, eq
, adapter
->rx_eq
.cur_eqd
);
1205 /* Alloc RX eth compl queue */
1206 cq
= &adapter
->rx_obj
.cq
;
1207 rc
= be_queue_alloc(adapter
, cq
, RX_CQ_LEN
,
1208 sizeof(struct be_eth_rx_compl
));
1212 /* Ask BE to create Rx eth compl queue */
1213 rc
= be_cmd_cq_create(&adapter
->ctrl
, cq
, eq
, false, false, 3);
1217 /* Alloc RX eth queue */
1218 q
= &adapter
->rx_obj
.q
;
1219 rc
= be_queue_alloc(adapter
, q
, RX_Q_LEN
, sizeof(struct be_eth_rx_d
));
1223 /* Ask BE to create Rx eth queue */
1224 rc
= be_cmd_rxq_create(&adapter
->ctrl
, q
, cq
->id
, rx_frag_size
,
1225 BE_MAX_JUMBO_FRAME_SIZE
, adapter
->if_handle
, false);
1231 be_queue_free(adapter
, q
);
1233 be_cmd_q_destroy(&adapter
->ctrl
, cq
, QTYPE_CQ
);
1235 be_queue_free(adapter
, cq
);
1237 be_cmd_q_destroy(&adapter
->ctrl
, eq
, QTYPE_EQ
);
1239 be_queue_free(adapter
, eq
);
1242 static bool event_get(struct be_eq_obj
*eq_obj
, u16
*rid
)
1244 struct be_eq_entry
*entry
= queue_tail_node(&eq_obj
->q
);
1245 u32 evt
= entry
->evt
;
1250 evt
= le32_to_cpu(evt
);
1251 *rid
= (evt
>> EQ_ENTRY_RES_ID_SHIFT
) & EQ_ENTRY_RES_ID_MASK
;
1253 queue_tail_inc(&eq_obj
->q
);
1257 static int event_handle(struct be_ctrl_info
*ctrl
,
1258 struct be_eq_obj
*eq_obj
)
1260 u16 rid
= 0, num
= 0;
1262 while (event_get(eq_obj
, &rid
))
1265 /* We can see an interrupt and no event */
1266 be_eq_notify(ctrl
, eq_obj
->q
.id
, true, true, num
);
1268 napi_schedule(&eq_obj
->napi
);
1273 static irqreturn_t
be_intx(int irq
, void *dev
)
1275 struct be_adapter
*adapter
= dev
;
1276 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1279 isr
= ioread32(ctrl
->csr
+ CEV_ISR0_OFFSET
+
1280 ctrl
->pci_func
* CEV_ISR_SIZE
);
1284 event_handle(ctrl
, &adapter
->tx_eq
);
1285 event_handle(ctrl
, &adapter
->rx_eq
);
1290 static irqreturn_t
be_msix_rx(int irq
, void *dev
)
1292 struct be_adapter
*adapter
= dev
;
1294 event_handle(&adapter
->ctrl
, &adapter
->rx_eq
);
1299 static irqreturn_t
be_msix_tx_mcc(int irq
, void *dev
)
1301 struct be_adapter
*adapter
= dev
;
1303 event_handle(&adapter
->ctrl
, &adapter
->tx_eq
);
1308 static inline bool do_lro(struct be_adapter
*adapter
,
1309 struct be_eth_rx_compl
*rxcp
)
1311 int err
= AMAP_GET_BITS(struct amap_eth_rx_compl
, err
, rxcp
);
1312 int tcp_frame
= AMAP_GET_BITS(struct amap_eth_rx_compl
, tcpf
, rxcp
);
1315 drvr_stats(adapter
)->be_rxcp_err
++;
1317 return (!tcp_frame
|| err
|| (adapter
->max_rx_coal
<= 1)) ?
1321 int be_poll_rx(struct napi_struct
*napi
, int budget
)
1323 struct be_eq_obj
*rx_eq
= container_of(napi
, struct be_eq_obj
, napi
);
1324 struct be_adapter
*adapter
=
1325 container_of(rx_eq
, struct be_adapter
, rx_eq
);
1326 struct be_queue_info
*rx_cq
= &adapter
->rx_obj
.cq
;
1327 struct be_eth_rx_compl
*rxcp
;
1330 for (work_done
= 0; work_done
< budget
; work_done
++) {
1331 rxcp
= be_rx_compl_get(adapter
);
1335 if (do_lro(adapter
, rxcp
))
1336 be_rx_compl_process_lro(adapter
, rxcp
);
1338 be_rx_compl_process(adapter
, rxcp
);
1340 be_rx_compl_reset(rxcp
);
1343 lro_flush_all(&adapter
->rx_obj
.lro_mgr
);
1345 /* Refill the queue */
1346 if (atomic_read(&adapter
->rx_obj
.q
.used
) < RX_FRAGS_REFILL_WM
)
1347 be_post_rx_frags(adapter
);
1350 if (work_done
< budget
) {
1351 napi_complete(napi
);
1352 be_cq_notify(&adapter
->ctrl
, rx_cq
->id
, true, work_done
);
1354 /* More to be consumed; continue with interrupts disabled */
1355 be_cq_notify(&adapter
->ctrl
, rx_cq
->id
, false, work_done
);
1360 void be_process_tx(struct be_adapter
*adapter
)
1362 struct be_queue_info
*txq
= &adapter
->tx_obj
.q
;
1363 struct be_queue_info
*tx_cq
= &adapter
->tx_obj
.cq
;
1364 struct be_eth_tx_compl
*txcp
;
1368 while ((txcp
= be_tx_compl_get(tx_cq
))) {
1369 end_idx
= AMAP_GET_BITS(struct amap_eth_tx_compl
,
1371 be_tx_compl_process(adapter
, end_idx
);
1376 be_cq_notify(&adapter
->ctrl
, tx_cq
->id
, true, num_cmpl
);
1378 /* As Tx wrbs have been freed up, wake up netdev queue if
1379 * it was stopped due to lack of tx wrbs.
1381 if (netif_queue_stopped(adapter
->netdev
) &&
1382 atomic_read(&txq
->used
) < txq
->len
/ 2) {
1383 netif_wake_queue(adapter
->netdev
);
1386 drvr_stats(adapter
)->be_tx_events
++;
1387 drvr_stats(adapter
)->be_tx_compl
+= num_cmpl
;
1391 /* As TX and MCC share the same EQ check for both TX and MCC completions.
1392 * For TX/MCC we don't honour budget; consume everything
1394 static int be_poll_tx_mcc(struct napi_struct
*napi
, int budget
)
1396 struct be_eq_obj
*tx_eq
= container_of(napi
, struct be_eq_obj
, napi
);
1397 struct be_adapter
*adapter
=
1398 container_of(tx_eq
, struct be_adapter
, tx_eq
);
1400 napi_complete(napi
);
1402 be_process_tx(adapter
);
1404 be_process_mcc(&adapter
->ctrl
);
1409 static void be_worker(struct work_struct
*work
)
1411 struct be_adapter
*adapter
=
1412 container_of(work
, struct be_adapter
, work
.work
);
1416 status
= be_cmd_get_stats(&adapter
->ctrl
, &adapter
->stats
.cmd
);
1418 netdev_stats_update(adapter
);
1421 be_rx_eqd_update(adapter
);
1423 be_tx_rate_update(adapter
);
1424 be_rx_rate_update(adapter
);
1426 if (adapter
->rx_post_starved
) {
1427 adapter
->rx_post_starved
= false;
1428 be_post_rx_frags(adapter
);
1431 schedule_delayed_work(&adapter
->work
, msecs_to_jiffies(1000));
1434 static void be_msix_enable(struct be_adapter
*adapter
)
1438 for (i
= 0; i
< BE_NUM_MSIX_VECTORS
; i
++)
1439 adapter
->msix_entries
[i
].entry
= i
;
1441 status
= pci_enable_msix(adapter
->pdev
, adapter
->msix_entries
,
1442 BE_NUM_MSIX_VECTORS
);
1444 adapter
->msix_enabled
= true;
1448 static inline int be_msix_vec_get(struct be_adapter
*adapter
, u32 eq_id
)
1450 return adapter
->msix_entries
[eq_id
-
1451 8 * adapter
->ctrl
.pci_func
].vector
;
1454 static int be_msix_register(struct be_adapter
*adapter
)
1456 struct net_device
*netdev
= adapter
->netdev
;
1457 struct be_eq_obj
*tx_eq
= &adapter
->tx_eq
;
1458 struct be_eq_obj
*rx_eq
= &adapter
->rx_eq
;
1461 sprintf(tx_eq
->desc
, "%s-tx", netdev
->name
);
1462 vec
= be_msix_vec_get(adapter
, tx_eq
->q
.id
);
1463 status
= request_irq(vec
, be_msix_tx_mcc
, 0, tx_eq
->desc
, adapter
);
1467 sprintf(rx_eq
->desc
, "%s-rx", netdev
->name
);
1468 vec
= be_msix_vec_get(adapter
, rx_eq
->q
.id
);
1469 status
= request_irq(vec
, be_msix_rx
, 0, rx_eq
->desc
, adapter
);
1470 if (status
) { /* Free TX IRQ */
1471 vec
= be_msix_vec_get(adapter
, tx_eq
->q
.id
);
1472 free_irq(vec
, adapter
);
1477 dev_warn(&adapter
->pdev
->dev
,
1478 "MSIX Request IRQ failed - err %d\n", status
);
1479 pci_disable_msix(adapter
->pdev
);
1480 adapter
->msix_enabled
= false;
1484 static int be_irq_register(struct be_adapter
*adapter
)
1486 struct net_device
*netdev
= adapter
->netdev
;
1489 if (adapter
->msix_enabled
) {
1490 status
= be_msix_register(adapter
);
1496 netdev
->irq
= adapter
->pdev
->irq
;
1497 status
= request_irq(netdev
->irq
, be_intx
, IRQF_SHARED
, netdev
->name
,
1500 dev_err(&adapter
->pdev
->dev
,
1501 "INTx request IRQ failed - err %d\n", status
);
1505 adapter
->isr_registered
= true;
1509 static void be_irq_unregister(struct be_adapter
*adapter
)
1511 struct net_device
*netdev
= adapter
->netdev
;
1514 if (!adapter
->isr_registered
)
1518 if (!adapter
->msix_enabled
) {
1519 free_irq(netdev
->irq
, adapter
);
1524 vec
= be_msix_vec_get(adapter
, adapter
->tx_eq
.q
.id
);
1525 free_irq(vec
, adapter
);
1526 vec
= be_msix_vec_get(adapter
, adapter
->rx_eq
.q
.id
);
1527 free_irq(vec
, adapter
);
1529 adapter
->isr_registered
= false;
1533 static int be_open(struct net_device
*netdev
)
1535 struct be_adapter
*adapter
= netdev_priv(netdev
);
1536 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1537 struct be_eq_obj
*rx_eq
= &adapter
->rx_eq
;
1538 struct be_eq_obj
*tx_eq
= &adapter
->tx_eq
;
1542 /* First time posting */
1543 be_post_rx_frags(adapter
);
1545 napi_enable(&rx_eq
->napi
);
1546 napi_enable(&tx_eq
->napi
);
1548 be_irq_register(adapter
);
1550 be_intr_set(ctrl
, true);
1552 /* The evt queues are created in unarmed state; arm them */
1553 be_eq_notify(ctrl
, rx_eq
->q
.id
, true, false, 0);
1554 be_eq_notify(ctrl
, tx_eq
->q
.id
, true, false, 0);
1556 /* Rx compl queue may be in unarmed state; rearm it */
1557 be_cq_notify(ctrl
, adapter
->rx_obj
.cq
.id
, true, 0);
1559 status
= be_cmd_link_status_query(ctrl
, &link_up
);
1562 be_link_status_update(adapter
, link_up
);
1564 schedule_delayed_work(&adapter
->work
, msecs_to_jiffies(100));
1568 static int be_setup(struct be_adapter
*adapter
)
1570 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1571 struct net_device
*netdev
= adapter
->netdev
;
1575 if_flags
= BE_IF_FLAGS_BROADCAST
| BE_IF_FLAGS_PROMISCUOUS
|
1576 BE_IF_FLAGS_MCAST_PROMISCUOUS
| BE_IF_FLAGS_UNTAGGED
|
1577 BE_IF_FLAGS_PASS_L3L4_ERRORS
;
1578 status
= be_cmd_if_create(ctrl
, if_flags
, netdev
->dev_addr
,
1579 false/* pmac_invalid */, &adapter
->if_handle
,
1584 be_vid_config(netdev
);
1586 status
= be_cmd_set_flow_control(ctrl
, true, true);
1590 status
= be_tx_queues_create(adapter
);
1594 status
= be_rx_queues_create(adapter
);
1598 status
= be_mcc_queues_create(adapter
);
1605 be_rx_queues_destroy(adapter
);
1607 be_tx_queues_destroy(adapter
);
1609 be_cmd_if_destroy(ctrl
, adapter
->if_handle
);
1614 static int be_clear(struct be_adapter
*adapter
)
1616 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1618 be_rx_queues_destroy(adapter
);
1619 be_tx_queues_destroy(adapter
);
1621 be_cmd_if_destroy(ctrl
, adapter
->if_handle
);
1623 be_mcc_queues_destroy(adapter
);
1627 static int be_close(struct net_device
*netdev
)
1629 struct be_adapter
*adapter
= netdev_priv(netdev
);
1630 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1631 struct be_eq_obj
*rx_eq
= &adapter
->rx_eq
;
1632 struct be_eq_obj
*tx_eq
= &adapter
->tx_eq
;
1635 cancel_delayed_work_sync(&adapter
->work
);
1637 netif_stop_queue(netdev
);
1638 netif_carrier_off(netdev
);
1639 adapter
->link_up
= false;
1641 be_intr_set(ctrl
, false);
1643 if (adapter
->msix_enabled
) {
1644 vec
= be_msix_vec_get(adapter
, tx_eq
->q
.id
);
1645 synchronize_irq(vec
);
1646 vec
= be_msix_vec_get(adapter
, rx_eq
->q
.id
);
1647 synchronize_irq(vec
);
1649 synchronize_irq(netdev
->irq
);
1651 be_irq_unregister(adapter
);
1653 napi_disable(&rx_eq
->napi
);
1654 napi_disable(&tx_eq
->napi
);
1659 static int be_get_frag_header(struct skb_frag_struct
*frag
, void **mac_hdr
,
1660 void **ip_hdr
, void **tcpudp_hdr
,
1661 u64
*hdr_flags
, void *priv
)
1664 struct vlan_ethhdr
*veh
;
1666 u8
*va
= page_address(frag
->page
) + frag
->page_offset
;
1667 unsigned long ll_hlen
;
1670 eh
= (struct ethhdr
*)va
;
1673 if (eh
->h_proto
!= htons(ETH_P_IP
)) {
1674 if (eh
->h_proto
== htons(ETH_P_8021Q
)) {
1675 veh
= (struct vlan_ethhdr
*)va
;
1676 if (veh
->h_vlan_encapsulated_proto
!= htons(ETH_P_IP
))
1679 ll_hlen
+= VLAN_HLEN
;
1684 *hdr_flags
= LRO_IPV4
;
1685 iph
= (struct iphdr
*)(va
+ ll_hlen
);
1687 if (iph
->protocol
!= IPPROTO_TCP
)
1689 *hdr_flags
|= LRO_TCP
;
1690 *tcpudp_hdr
= (u8
*) (*ip_hdr
) + (iph
->ihl
<< 2);
1695 static void be_lro_init(struct be_adapter
*adapter
, struct net_device
*netdev
)
1697 struct net_lro_mgr
*lro_mgr
;
1699 lro_mgr
= &adapter
->rx_obj
.lro_mgr
;
1700 lro_mgr
->dev
= netdev
;
1701 lro_mgr
->features
= LRO_F_NAPI
;
1702 lro_mgr
->ip_summed
= CHECKSUM_UNNECESSARY
;
1703 lro_mgr
->ip_summed_aggr
= CHECKSUM_UNNECESSARY
;
1704 lro_mgr
->max_desc
= BE_MAX_LRO_DESCRIPTORS
;
1705 lro_mgr
->lro_arr
= adapter
->rx_obj
.lro_desc
;
1706 lro_mgr
->get_frag_header
= be_get_frag_header
;
1707 lro_mgr
->max_aggr
= BE_MAX_FRAGS_PER_FRAME
;
1710 static struct net_device_ops be_netdev_ops
= {
1711 .ndo_open
= be_open
,
1712 .ndo_stop
= be_close
,
1713 .ndo_start_xmit
= be_xmit
,
1714 .ndo_get_stats
= be_get_stats
,
1715 .ndo_set_rx_mode
= be_set_multicast_list
,
1716 .ndo_set_mac_address
= be_mac_addr_set
,
1717 .ndo_change_mtu
= be_change_mtu
,
1718 .ndo_validate_addr
= eth_validate_addr
,
1719 .ndo_vlan_rx_register
= be_vlan_register
,
1720 .ndo_vlan_rx_add_vid
= be_vlan_add_vid
,
1721 .ndo_vlan_rx_kill_vid
= be_vlan_rem_vid
,
1724 static void be_netdev_init(struct net_device
*netdev
)
1726 struct be_adapter
*adapter
= netdev_priv(netdev
);
1728 netdev
->features
|= NETIF_F_SG
| NETIF_F_HW_VLAN_RX
| NETIF_F_TSO
|
1729 NETIF_F_HW_VLAN_TX
| NETIF_F_HW_VLAN_FILTER
| NETIF_F_IP_CSUM
|
1732 netdev
->flags
|= IFF_MULTICAST
;
1734 adapter
->rx_csum
= true;
1736 BE_SET_NETDEV_OPS(netdev
, &be_netdev_ops
);
1738 SET_ETHTOOL_OPS(netdev
, &be_ethtool_ops
);
1740 be_lro_init(adapter
, netdev
);
1742 netif_napi_add(netdev
, &adapter
->rx_eq
.napi
, be_poll_rx
,
1744 netif_napi_add(netdev
, &adapter
->tx_eq
.napi
, be_poll_tx_mcc
,
1747 netif_carrier_off(netdev
);
1748 netif_stop_queue(netdev
);
1751 static void be_unmap_pci_bars(struct be_adapter
*adapter
)
1753 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1759 iounmap(ctrl
->pcicfg
);
1762 static int be_map_pci_bars(struct be_adapter
*adapter
)
1766 addr
= ioremap_nocache(pci_resource_start(adapter
->pdev
, 2),
1767 pci_resource_len(adapter
->pdev
, 2));
1770 adapter
->ctrl
.csr
= addr
;
1772 addr
= ioremap_nocache(pci_resource_start(adapter
->pdev
, 4),
1776 adapter
->ctrl
.db
= addr
;
1778 addr
= ioremap_nocache(pci_resource_start(adapter
->pdev
, 1),
1779 pci_resource_len(adapter
->pdev
, 1));
1782 adapter
->ctrl
.pcicfg
= addr
;
1786 be_unmap_pci_bars(adapter
);
1791 static void be_ctrl_cleanup(struct be_adapter
*adapter
)
1793 struct be_dma_mem
*mem
= &adapter
->ctrl
.mbox_mem_alloced
;
1795 be_unmap_pci_bars(adapter
);
1798 pci_free_consistent(adapter
->pdev
, mem
->size
,
1802 /* Initialize the mbox required to send cmds to BE */
1803 static int be_ctrl_init(struct be_adapter
*adapter
)
1805 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1806 struct be_dma_mem
*mbox_mem_alloc
= &ctrl
->mbox_mem_alloced
;
1807 struct be_dma_mem
*mbox_mem_align
= &ctrl
->mbox_mem
;
1811 status
= be_map_pci_bars(adapter
);
1815 mbox_mem_alloc
->size
= sizeof(struct be_mcc_mailbox
) + 16;
1816 mbox_mem_alloc
->va
= pci_alloc_consistent(adapter
->pdev
,
1817 mbox_mem_alloc
->size
, &mbox_mem_alloc
->dma
);
1818 if (!mbox_mem_alloc
->va
) {
1819 be_unmap_pci_bars(adapter
);
1822 mbox_mem_align
->size
= sizeof(struct be_mcc_mailbox
);
1823 mbox_mem_align
->va
= PTR_ALIGN(mbox_mem_alloc
->va
, 16);
1824 mbox_mem_align
->dma
= PTR_ALIGN(mbox_mem_alloc
->dma
, 16);
1825 memset(mbox_mem_align
->va
, 0, sizeof(struct be_mcc_mailbox
));
1826 spin_lock_init(&ctrl
->mbox_lock
);
1827 spin_lock_init(&ctrl
->mcc_lock
);
1828 spin_lock_init(&ctrl
->mcc_cq_lock
);
1830 ctrl
->async_cb
= be_link_status_update
;
1831 ctrl
->adapter_ctxt
= adapter
;
1833 val
= ioread32(ctrl
->pcicfg
+ PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET
);
1834 ctrl
->pci_func
= (val
>> MEMBAR_CTRL_INT_CTRL_PFUNC_SHIFT
) &
1835 MEMBAR_CTRL_INT_CTRL_PFUNC_MASK
;
1839 static void be_stats_cleanup(struct be_adapter
*adapter
)
1841 struct be_stats_obj
*stats
= &adapter
->stats
;
1842 struct be_dma_mem
*cmd
= &stats
->cmd
;
1845 pci_free_consistent(adapter
->pdev
, cmd
->size
,
1849 static int be_stats_init(struct be_adapter
*adapter
)
1851 struct be_stats_obj
*stats
= &adapter
->stats
;
1852 struct be_dma_mem
*cmd
= &stats
->cmd
;
1854 cmd
->size
= sizeof(struct be_cmd_req_get_stats
);
1855 cmd
->va
= pci_alloc_consistent(adapter
->pdev
, cmd
->size
, &cmd
->dma
);
1856 if (cmd
->va
== NULL
)
1861 static void __devexit
be_remove(struct pci_dev
*pdev
)
1863 struct be_adapter
*adapter
= pci_get_drvdata(pdev
);
1867 unregister_netdev(adapter
->netdev
);
1871 be_stats_cleanup(adapter
);
1873 be_ctrl_cleanup(adapter
);
1875 if (adapter
->msix_enabled
) {
1876 pci_disable_msix(adapter
->pdev
);
1877 adapter
->msix_enabled
= false;
1880 pci_set_drvdata(pdev
, NULL
);
1881 pci_release_regions(pdev
);
1882 pci_disable_device(pdev
);
1884 free_netdev(adapter
->netdev
);
1887 static int be_hw_up(struct be_adapter
*adapter
)
1889 struct be_ctrl_info
*ctrl
= &adapter
->ctrl
;
1892 status
= be_cmd_POST(ctrl
);
1896 status
= be_cmd_get_fw_ver(ctrl
, adapter
->fw_ver
);
1900 status
= be_cmd_query_fw_cfg(ctrl
, &adapter
->port_num
);
1904 static int __devinit
be_probe(struct pci_dev
*pdev
,
1905 const struct pci_device_id
*pdev_id
)
1908 struct be_adapter
*adapter
;
1909 struct net_device
*netdev
;
1910 struct be_ctrl_info
*ctrl
;
1913 status
= pci_enable_device(pdev
);
1917 status
= pci_request_regions(pdev
, DRV_NAME
);
1920 pci_set_master(pdev
);
1922 netdev
= alloc_etherdev(sizeof(struct be_adapter
));
1923 if (netdev
== NULL
) {
1927 adapter
= netdev_priv(netdev
);
1928 adapter
->pdev
= pdev
;
1929 pci_set_drvdata(pdev
, adapter
);
1930 adapter
->netdev
= netdev
;
1932 be_msix_enable(adapter
);
1934 status
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(64));
1936 netdev
->features
|= NETIF_F_HIGHDMA
;
1938 status
= pci_set_dma_mask(pdev
, DMA_BIT_MASK(32));
1940 dev_err(&pdev
->dev
, "Could not set PCI DMA Mask\n");
1945 ctrl
= &adapter
->ctrl
;
1946 status
= be_ctrl_init(adapter
);
1950 status
= be_stats_init(adapter
);
1954 status
= be_hw_up(adapter
);
1958 status
= be_cmd_mac_addr_query(ctrl
, mac
, MAC_ADDRESS_TYPE_NETWORK
,
1959 true /* permanent */, 0);
1962 memcpy(netdev
->dev_addr
, mac
, ETH_ALEN
);
1964 INIT_DELAYED_WORK(&adapter
->work
, be_worker
);
1965 be_netdev_init(netdev
);
1966 SET_NETDEV_DEV(netdev
, &adapter
->pdev
->dev
);
1968 status
= be_setup(adapter
);
1971 status
= register_netdev(netdev
);
1975 dev_info(&pdev
->dev
, "%s port %d\n", nic_name(pdev
), adapter
->port_num
);
1981 be_stats_cleanup(adapter
);
1983 be_ctrl_cleanup(adapter
);
1985 free_netdev(adapter
->netdev
);
1987 pci_release_regions(pdev
);
1989 pci_disable_device(pdev
);
1991 dev_err(&pdev
->dev
, "%s initialization failed\n", nic_name(pdev
));
1995 static int be_suspend(struct pci_dev
*pdev
, pm_message_t state
)
1997 struct be_adapter
*adapter
= pci_get_drvdata(pdev
);
1998 struct net_device
*netdev
= adapter
->netdev
;
2000 netif_device_detach(netdev
);
2001 if (netif_running(netdev
)) {
2008 pci_save_state(pdev
);
2009 pci_disable_device(pdev
);
2010 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
2014 static int be_resume(struct pci_dev
*pdev
)
2017 struct be_adapter
*adapter
= pci_get_drvdata(pdev
);
2018 struct net_device
*netdev
= adapter
->netdev
;
2020 netif_device_detach(netdev
);
2022 status
= pci_enable_device(pdev
);
2026 pci_set_power_state(pdev
, 0);
2027 pci_restore_state(pdev
);
2029 if (netif_running(netdev
)) {
2035 netif_device_attach(netdev
);
2039 static struct pci_driver be_driver
= {
2041 .id_table
= be_dev_ids
,
2043 .remove
= be_remove
,
2044 .suspend
= be_suspend
,
2048 static int __init
be_init_module(void)
2050 if (rx_frag_size
!= 8192 && rx_frag_size
!= 4096
2051 && rx_frag_size
!= 2048) {
2052 printk(KERN_WARNING DRV_NAME
2053 " : Module param rx_frag_size must be 2048/4096/8192."
2055 rx_frag_size
= 2048;
2057 /* Ensure rx_frag_size is aligned to chache line */
2058 if (SKB_DATA_ALIGN(rx_frag_size
) != rx_frag_size
) {
2059 printk(KERN_WARNING DRV_NAME
2060 " : Bad module param rx_frag_size. Using 2048\n");
2061 rx_frag_size
= 2048;
2064 return pci_register_driver(&be_driver
);
2066 module_init(be_init_module
);
2068 static void __exit
be_exit_module(void)
2070 pci_unregister_driver(&be_driver
);
2072 module_exit(be_exit_module
);