2 * linux/drivers/net/ehea/ehea_main.c
4 * eHEA ethernet device driver for IBM eServer System p
6 * (C) Copyright IBM Corp. 2006
9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31 #include <linux/tcp.h>
32 #include <linux/udp.h>
34 #include <linux/list.h>
35 #include <linux/slab.h>
36 #include <linux/if_ether.h>
37 #include <linux/notifier.h>
38 #include <linux/reboot.h>
39 #include <linux/memory.h>
40 #include <asm/kexec.h>
41 #include <linux/mutex.h>
47 #include "ehea_phyp.h"
50 MODULE_LICENSE("GPL");
51 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
52 MODULE_DESCRIPTION("IBM eServer HEA Driver");
53 MODULE_VERSION(DRV_VERSION
);
56 static int msg_level
= -1;
57 static int rq1_entries
= EHEA_DEF_ENTRIES_RQ1
;
58 static int rq2_entries
= EHEA_DEF_ENTRIES_RQ2
;
59 static int rq3_entries
= EHEA_DEF_ENTRIES_RQ3
;
60 static int sq_entries
= EHEA_DEF_ENTRIES_SQ
;
63 static int lro_max_aggr
= EHEA_LRO_MAX_AGGR
;
64 static int num_tx_qps
= EHEA_NUM_TX_QP
;
65 static int prop_carrier_state
;
67 module_param(msg_level
, int, 0);
68 module_param(rq1_entries
, int, 0);
69 module_param(rq2_entries
, int, 0);
70 module_param(rq3_entries
, int, 0);
71 module_param(sq_entries
, int, 0);
72 module_param(prop_carrier_state
, int, 0);
73 module_param(use_mcs
, int, 0);
74 module_param(use_lro
, int, 0);
75 module_param(lro_max_aggr
, int, 0);
76 module_param(num_tx_qps
, int, 0);
78 MODULE_PARM_DESC(num_tx_qps
, "Number of TX-QPS");
79 MODULE_PARM_DESC(msg_level
, "msg_level");
80 MODULE_PARM_DESC(prop_carrier_state
, "Propagate carrier state of physical "
81 "port to stack. 1:yes, 0:no. Default = 0 ");
82 MODULE_PARM_DESC(rq3_entries
, "Number of entries for Receive Queue 3 "
83 "[2^x - 1], x = [6..14]. Default = "
84 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3
) ")");
85 MODULE_PARM_DESC(rq2_entries
, "Number of entries for Receive Queue 2 "
86 "[2^x - 1], x = [6..14]. Default = "
87 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2
) ")");
88 MODULE_PARM_DESC(rq1_entries
, "Number of entries for Receive Queue 1 "
89 "[2^x - 1], x = [6..14]. Default = "
90 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1
) ")");
91 MODULE_PARM_DESC(sq_entries
, " Number of entries for the Send Queue "
92 "[2^x - 1], x = [6..14]. Default = "
93 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ
) ")");
94 MODULE_PARM_DESC(use_mcs
, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
96 MODULE_PARM_DESC(lro_max_aggr
, " LRO: Max packets to be aggregated. Default = "
97 __MODULE_STRING(EHEA_LRO_MAX_AGGR
));
98 MODULE_PARM_DESC(use_lro
, " Large Receive Offload, 1: enable, 0: disable, "
101 static int port_name_cnt
;
102 static LIST_HEAD(adapter_list
);
103 static unsigned long ehea_driver_flags
;
104 struct work_struct ehea_rereg_mr_task
;
105 static DEFINE_MUTEX(dlpar_mem_lock
);
106 struct ehea_fw_handle_array ehea_fw_handles
;
107 struct ehea_bcmc_reg_array ehea_bcmc_regs
;
110 static int __devinit
ehea_probe_adapter(struct platform_device
*dev
,
111 const struct of_device_id
*id
);
113 static int __devexit
ehea_remove(struct platform_device
*dev
);
115 static struct of_device_id ehea_device_table
[] = {
118 .compatible
= "IBM,lhea",
122 MODULE_DEVICE_TABLE(of
, ehea_device_table
);
124 static struct of_platform_driver ehea_driver
= {
127 .owner
= THIS_MODULE
,
128 .of_match_table
= ehea_device_table
,
130 .probe
= ehea_probe_adapter
,
131 .remove
= ehea_remove
,
134 void ehea_dump(void *adr
, int len
, char *msg
)
137 unsigned char *deb
= adr
;
138 for (x
= 0; x
< len
; x
+= 16) {
139 printk(DRV_NAME
" %s adr=%p ofs=%04x %016llx %016llx\n", msg
,
140 deb
, x
, *((u64
*)&deb
[0]), *((u64
*)&deb
[8]));
145 void ehea_schedule_port_reset(struct ehea_port
*port
)
147 if (!test_bit(__EHEA_DISABLE_PORT_RESET
, &port
->flags
))
148 schedule_work(&port
->reset_task
);
151 static void ehea_update_firmware_handles(void)
153 struct ehea_fw_handle_entry
*arr
= NULL
;
154 struct ehea_adapter
*adapter
;
155 int num_adapters
= 0;
159 int num_fw_handles
, k
, l
;
161 /* Determine number of handles */
162 mutex_lock(&ehea_fw_handles
.lock
);
164 list_for_each_entry(adapter
, &adapter_list
, list
) {
167 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
168 struct ehea_port
*port
= adapter
->port
[k
];
170 if (!port
|| (port
->state
!= EHEA_PORT_UP
))
174 num_portres
+= port
->num_def_qps
+ port
->num_add_tx_qps
;
178 num_fw_handles
= num_adapters
* EHEA_NUM_ADAPTER_FW_HANDLES
+
179 num_ports
* EHEA_NUM_PORT_FW_HANDLES
+
180 num_portres
* EHEA_NUM_PORTRES_FW_HANDLES
;
182 if (num_fw_handles
) {
183 arr
= kcalloc(num_fw_handles
, sizeof(*arr
), GFP_KERNEL
);
185 goto out
; /* Keep the existing array */
189 list_for_each_entry(adapter
, &adapter_list
, list
) {
190 if (num_adapters
== 0)
193 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
194 struct ehea_port
*port
= adapter
->port
[k
];
196 if (!port
|| (port
->state
!= EHEA_PORT_UP
) ||
201 l
< port
->num_def_qps
+ port
->num_add_tx_qps
;
203 struct ehea_port_res
*pr
= &port
->port_res
[l
];
205 arr
[i
].adh
= adapter
->handle
;
206 arr
[i
++].fwh
= pr
->qp
->fw_handle
;
207 arr
[i
].adh
= adapter
->handle
;
208 arr
[i
++].fwh
= pr
->send_cq
->fw_handle
;
209 arr
[i
].adh
= adapter
->handle
;
210 arr
[i
++].fwh
= pr
->recv_cq
->fw_handle
;
211 arr
[i
].adh
= adapter
->handle
;
212 arr
[i
++].fwh
= pr
->eq
->fw_handle
;
213 arr
[i
].adh
= adapter
->handle
;
214 arr
[i
++].fwh
= pr
->send_mr
.handle
;
215 arr
[i
].adh
= adapter
->handle
;
216 arr
[i
++].fwh
= pr
->recv_mr
.handle
;
218 arr
[i
].adh
= adapter
->handle
;
219 arr
[i
++].fwh
= port
->qp_eq
->fw_handle
;
223 arr
[i
].adh
= adapter
->handle
;
224 arr
[i
++].fwh
= adapter
->neq
->fw_handle
;
226 if (adapter
->mr
.handle
) {
227 arr
[i
].adh
= adapter
->handle
;
228 arr
[i
++].fwh
= adapter
->mr
.handle
;
234 kfree(ehea_fw_handles
.arr
);
235 ehea_fw_handles
.arr
= arr
;
236 ehea_fw_handles
.num_entries
= i
;
238 mutex_unlock(&ehea_fw_handles
.lock
);
241 static void ehea_update_bcmc_registrations(void)
244 struct ehea_bcmc_reg_entry
*arr
= NULL
;
245 struct ehea_adapter
*adapter
;
246 struct ehea_mc_list
*mc_entry
;
247 int num_registrations
= 0;
251 spin_lock_irqsave(&ehea_bcmc_regs
.lock
, flags
);
253 /* Determine number of registrations */
254 list_for_each_entry(adapter
, &adapter_list
, list
)
255 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
256 struct ehea_port
*port
= adapter
->port
[k
];
258 if (!port
|| (port
->state
!= EHEA_PORT_UP
))
261 num_registrations
+= 2; /* Broadcast registrations */
263 list_for_each_entry(mc_entry
, &port
->mc_list
->list
,list
)
264 num_registrations
+= 2;
267 if (num_registrations
) {
268 arr
= kcalloc(num_registrations
, sizeof(*arr
), GFP_ATOMIC
);
270 goto out
; /* Keep the existing array */
274 list_for_each_entry(adapter
, &adapter_list
, list
) {
275 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
276 struct ehea_port
*port
= adapter
->port
[k
];
278 if (!port
|| (port
->state
!= EHEA_PORT_UP
))
281 if (num_registrations
== 0)
284 arr
[i
].adh
= adapter
->handle
;
285 arr
[i
].port_id
= port
->logical_port_id
;
286 arr
[i
].reg_type
= EHEA_BCMC_BROADCAST
|
288 arr
[i
++].macaddr
= port
->mac_addr
;
290 arr
[i
].adh
= adapter
->handle
;
291 arr
[i
].port_id
= port
->logical_port_id
;
292 arr
[i
].reg_type
= EHEA_BCMC_BROADCAST
|
293 EHEA_BCMC_VLANID_ALL
;
294 arr
[i
++].macaddr
= port
->mac_addr
;
295 num_registrations
-= 2;
297 list_for_each_entry(mc_entry
,
298 &port
->mc_list
->list
, list
) {
299 if (num_registrations
== 0)
302 arr
[i
].adh
= adapter
->handle
;
303 arr
[i
].port_id
= port
->logical_port_id
;
304 arr
[i
].reg_type
= EHEA_BCMC_SCOPE_ALL
|
305 EHEA_BCMC_MULTICAST
|
307 arr
[i
++].macaddr
= mc_entry
->macaddr
;
309 arr
[i
].adh
= adapter
->handle
;
310 arr
[i
].port_id
= port
->logical_port_id
;
311 arr
[i
].reg_type
= EHEA_BCMC_SCOPE_ALL
|
312 EHEA_BCMC_MULTICAST
|
313 EHEA_BCMC_VLANID_ALL
;
314 arr
[i
++].macaddr
= mc_entry
->macaddr
;
315 num_registrations
-= 2;
321 kfree(ehea_bcmc_regs
.arr
);
322 ehea_bcmc_regs
.arr
= arr
;
323 ehea_bcmc_regs
.num_entries
= i
;
325 spin_unlock_irqrestore(&ehea_bcmc_regs
.lock
, flags
);
328 static struct net_device_stats
*ehea_get_stats(struct net_device
*dev
)
330 struct ehea_port
*port
= netdev_priv(dev
);
331 struct net_device_stats
*stats
= &port
->stats
;
332 struct hcp_ehea_port_cb2
*cb2
;
333 u64 hret
, rx_packets
, tx_packets
, rx_bytes
= 0, tx_bytes
= 0;
336 memset(stats
, 0, sizeof(*stats
));
338 cb2
= (void *)get_zeroed_page(GFP_KERNEL
);
340 ehea_error("no mem for cb2");
344 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
345 port
->logical_port_id
,
346 H_PORT_CB2
, H_PORT_CB2_ALL
, cb2
);
347 if (hret
!= H_SUCCESS
) {
348 ehea_error("query_ehea_port failed");
352 if (netif_msg_hw(port
))
353 ehea_dump(cb2
, sizeof(*cb2
), "net_device_stats");
356 for (i
= 0; i
< port
->num_def_qps
; i
++) {
357 rx_packets
+= port
->port_res
[i
].rx_packets
;
358 rx_bytes
+= port
->port_res
[i
].rx_bytes
;
362 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
363 tx_packets
+= port
->port_res
[i
].tx_packets
;
364 tx_bytes
+= port
->port_res
[i
].tx_bytes
;
367 stats
->tx_packets
= tx_packets
;
368 stats
->multicast
= cb2
->rxmcp
;
369 stats
->rx_errors
= cb2
->rxuerr
;
370 stats
->rx_bytes
= rx_bytes
;
371 stats
->tx_bytes
= tx_bytes
;
372 stats
->rx_packets
= rx_packets
;
375 free_page((unsigned long)cb2
);
380 static void ehea_refill_rq1(struct ehea_port_res
*pr
, int index
, int nr_of_wqes
)
382 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
383 struct net_device
*dev
= pr
->port
->netdev
;
384 int max_index_mask
= pr
->rq1_skba
.len
- 1;
385 int fill_wqes
= pr
->rq1_skba
.os_skbs
+ nr_of_wqes
;
389 pr
->rq1_skba
.os_skbs
= 0;
391 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))) {
393 pr
->rq1_skba
.index
= index
;
394 pr
->rq1_skba
.os_skbs
= fill_wqes
;
398 for (i
= 0; i
< fill_wqes
; i
++) {
399 if (!skb_arr_rq1
[index
]) {
400 skb_arr_rq1
[index
] = netdev_alloc_skb(dev
,
402 if (!skb_arr_rq1
[index
]) {
403 pr
->rq1_skba
.os_skbs
= fill_wqes
- i
;
408 index
&= max_index_mask
;
416 ehea_update_rq1a(pr
->qp
, adder
);
419 static void ehea_init_fill_rq1(struct ehea_port_res
*pr
, int nr_rq1a
)
421 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
422 struct net_device
*dev
= pr
->port
->netdev
;
425 for (i
= 0; i
< pr
->rq1_skba
.len
; i
++) {
426 skb_arr_rq1
[i
] = netdev_alloc_skb(dev
, EHEA_L_PKT_SIZE
);
431 ehea_update_rq1a(pr
->qp
, nr_rq1a
);
434 static int ehea_refill_rq_def(struct ehea_port_res
*pr
,
435 struct ehea_q_skb_arr
*q_skba
, int rq_nr
,
436 int num_wqes
, int wqe_type
, int packet_size
)
438 struct net_device
*dev
= pr
->port
->netdev
;
439 struct ehea_qp
*qp
= pr
->qp
;
440 struct sk_buff
**skb_arr
= q_skba
->arr
;
441 struct ehea_rwqe
*rwqe
;
442 int i
, index
, max_index_mask
, fill_wqes
;
446 fill_wqes
= q_skba
->os_skbs
+ num_wqes
;
449 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))) {
450 q_skba
->os_skbs
= fill_wqes
;
454 index
= q_skba
->index
;
455 max_index_mask
= q_skba
->len
- 1;
456 for (i
= 0; i
< fill_wqes
; i
++) {
460 skb
= netdev_alloc_skb_ip_align(dev
, packet_size
);
462 q_skba
->os_skbs
= fill_wqes
- i
;
463 if (q_skba
->os_skbs
== q_skba
->len
- 2) {
464 ehea_info("%s: rq%i ran dry - no mem for skb",
465 pr
->port
->netdev
->name
, rq_nr
);
471 skb_arr
[index
] = skb
;
472 tmp_addr
= ehea_map_vaddr(skb
->data
);
473 if (tmp_addr
== -1) {
475 q_skba
->os_skbs
= fill_wqes
- i
;
480 rwqe
= ehea_get_next_rwqe(qp
, rq_nr
);
481 rwqe
->wr_id
= EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, wqe_type
)
482 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX
, index
);
483 rwqe
->sg_list
[0].l_key
= pr
->recv_mr
.lkey
;
484 rwqe
->sg_list
[0].vaddr
= tmp_addr
;
485 rwqe
->sg_list
[0].len
= packet_size
;
486 rwqe
->data_segments
= 1;
489 index
&= max_index_mask
;
493 q_skba
->index
= index
;
500 ehea_update_rq2a(pr
->qp
, adder
);
502 ehea_update_rq3a(pr
->qp
, adder
);
508 static int ehea_refill_rq2(struct ehea_port_res
*pr
, int nr_of_wqes
)
510 return ehea_refill_rq_def(pr
, &pr
->rq2_skba
, 2,
511 nr_of_wqes
, EHEA_RWQE2_TYPE
,
516 static int ehea_refill_rq3(struct ehea_port_res
*pr
, int nr_of_wqes
)
518 return ehea_refill_rq_def(pr
, &pr
->rq3_skba
, 3,
519 nr_of_wqes
, EHEA_RWQE3_TYPE
,
520 EHEA_MAX_PACKET_SIZE
);
523 static inline int ehea_check_cqe(struct ehea_cqe
*cqe
, int *rq_num
)
525 *rq_num
= (cqe
->type
& EHEA_CQE_TYPE_RQ
) >> 5;
526 if ((cqe
->status
& EHEA_CQE_STAT_ERR_MASK
) == 0)
528 if (((cqe
->status
& EHEA_CQE_STAT_ERR_TCP
) != 0) &&
529 (cqe
->header_length
== 0))
534 static inline void ehea_fill_skb(struct net_device
*dev
,
535 struct sk_buff
*skb
, struct ehea_cqe
*cqe
)
537 int length
= cqe
->num_bytes_transfered
- 4; /*remove CRC */
539 skb_put(skb
, length
);
540 skb
->protocol
= eth_type_trans(skb
, dev
);
542 /* The packet was not an IPV4 packet so a complemented checksum was
543 calculated. The value is found in the Internet Checksum field. */
544 if (cqe
->status
& EHEA_CQE_BLIND_CKSUM
) {
545 skb
->ip_summed
= CHECKSUM_COMPLETE
;
546 skb
->csum
= csum_unfold(~cqe
->inet_checksum_value
);
548 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
551 static inline struct sk_buff
*get_skb_by_index(struct sk_buff
**skb_array
,
553 struct ehea_cqe
*cqe
)
555 int skb_index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, cqe
->wr_id
);
566 prefetchw(pref
+ EHEA_CACHE_LINE
);
568 pref
= (skb_array
[x
]->data
);
570 prefetch(pref
+ EHEA_CACHE_LINE
);
571 prefetch(pref
+ EHEA_CACHE_LINE
* 2);
572 prefetch(pref
+ EHEA_CACHE_LINE
* 3);
575 skb
= skb_array
[skb_index
];
576 skb_array
[skb_index
] = NULL
;
580 static inline struct sk_buff
*get_skb_by_index_ll(struct sk_buff
**skb_array
,
581 int arr_len
, int wqe_index
)
593 prefetchw(pref
+ EHEA_CACHE_LINE
);
595 pref
= (skb_array
[x
]->data
);
597 prefetchw(pref
+ EHEA_CACHE_LINE
);
600 skb
= skb_array
[wqe_index
];
601 skb_array
[wqe_index
] = NULL
;
605 static int ehea_treat_poll_error(struct ehea_port_res
*pr
, int rq
,
606 struct ehea_cqe
*cqe
, int *processed_rq2
,
611 if (cqe
->status
& EHEA_CQE_STAT_ERR_TCP
)
612 pr
->p_stats
.err_tcp_cksum
++;
613 if (cqe
->status
& EHEA_CQE_STAT_ERR_IP
)
614 pr
->p_stats
.err_ip_cksum
++;
615 if (cqe
->status
& EHEA_CQE_STAT_ERR_CRC
)
616 pr
->p_stats
.err_frame_crc
++;
620 skb
= get_skb_by_index(pr
->rq2_skba
.arr
, pr
->rq2_skba
.len
, cqe
);
622 } else if (rq
== 3) {
624 skb
= get_skb_by_index(pr
->rq3_skba
.arr
, pr
->rq3_skba
.len
, cqe
);
628 if (cqe
->status
& EHEA_CQE_STAT_FAT_ERR_MASK
) {
629 if (netif_msg_rx_err(pr
->port
)) {
630 ehea_error("Critical receive error for QP %d. "
631 "Resetting port.", pr
->qp
->init_attr
.qp_nr
);
632 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
634 ehea_schedule_port_reset(pr
->port
);
641 static int get_skb_hdr(struct sk_buff
*skb
, void **iphdr
,
642 void **tcph
, u64
*hdr_flags
, void *priv
)
644 struct ehea_cqe
*cqe
= priv
;
648 /* non tcp/udp packets */
649 if (!cqe
->header_length
)
653 skb_reset_network_header(skb
);
655 if (iph
->protocol
!= IPPROTO_TCP
)
658 ip_len
= ip_hdrlen(skb
);
659 skb_set_transport_header(skb
, ip_len
);
660 *tcph
= tcp_hdr(skb
);
662 /* check if ip header and tcp header are complete */
663 if (ntohs(iph
->tot_len
) < ip_len
+ tcp_hdrlen(skb
))
666 *hdr_flags
= LRO_IPV4
| LRO_TCP
;
672 static void ehea_proc_skb(struct ehea_port_res
*pr
, struct ehea_cqe
*cqe
,
675 int vlan_extracted
= ((cqe
->status
& EHEA_CQE_VLAN_TAG_XTRACT
) &&
680 lro_vlan_hwaccel_receive_skb(&pr
->lro_mgr
, skb
,
685 lro_receive_skb(&pr
->lro_mgr
, skb
, cqe
);
688 vlan_hwaccel_receive_skb(skb
, pr
->port
->vgrp
,
691 netif_receive_skb(skb
);
695 static int ehea_proc_rwqes(struct net_device
*dev
,
696 struct ehea_port_res
*pr
,
699 struct ehea_port
*port
= pr
->port
;
700 struct ehea_qp
*qp
= pr
->qp
;
701 struct ehea_cqe
*cqe
;
703 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
704 struct sk_buff
**skb_arr_rq2
= pr
->rq2_skba
.arr
;
705 struct sk_buff
**skb_arr_rq3
= pr
->rq3_skba
.arr
;
706 int skb_arr_rq1_len
= pr
->rq1_skba
.len
;
707 int skb_arr_rq2_len
= pr
->rq2_skba
.len
;
708 int skb_arr_rq3_len
= pr
->rq3_skba
.len
;
709 int processed
, processed_rq1
, processed_rq2
, processed_rq3
;
710 u64 processed_bytes
= 0;
711 int wqe_index
, last_wqe_index
, rq
, port_reset
;
713 processed
= processed_rq1
= processed_rq2
= processed_rq3
= 0;
716 cqe
= ehea_poll_rq1(qp
, &wqe_index
);
717 while ((processed
< budget
) && cqe
) {
721 if (netif_msg_rx_status(port
))
722 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
724 last_wqe_index
= wqe_index
;
726 if (!ehea_check_cqe(cqe
, &rq
)) {
729 skb
= get_skb_by_index_ll(skb_arr_rq1
,
732 if (unlikely(!skb
)) {
733 if (netif_msg_rx_err(port
))
734 ehea_error("LL rq1: skb=NULL");
736 skb
= netdev_alloc_skb(dev
,
741 skb_copy_to_linear_data(skb
, ((char *)cqe
) + 64,
742 cqe
->num_bytes_transfered
- 4);
743 ehea_fill_skb(dev
, skb
, cqe
);
744 } else if (rq
== 2) {
746 skb
= get_skb_by_index(skb_arr_rq2
,
747 skb_arr_rq2_len
, cqe
);
748 if (unlikely(!skb
)) {
749 if (netif_msg_rx_err(port
))
750 ehea_error("rq2: skb=NULL");
753 ehea_fill_skb(dev
, skb
, cqe
);
757 skb
= get_skb_by_index(skb_arr_rq3
,
758 skb_arr_rq3_len
, cqe
);
759 if (unlikely(!skb
)) {
760 if (netif_msg_rx_err(port
))
761 ehea_error("rq3: skb=NULL");
764 ehea_fill_skb(dev
, skb
, cqe
);
768 processed_bytes
+= skb
->len
;
769 ehea_proc_skb(pr
, cqe
, skb
);
771 pr
->p_stats
.poll_receive_errors
++;
772 port_reset
= ehea_treat_poll_error(pr
, rq
, cqe
,
778 cqe
= ehea_poll_rq1(qp
, &wqe_index
);
781 lro_flush_all(&pr
->lro_mgr
);
783 pr
->rx_packets
+= processed
;
784 pr
->rx_bytes
+= processed_bytes
;
786 ehea_refill_rq1(pr
, last_wqe_index
, processed_rq1
);
787 ehea_refill_rq2(pr
, processed_rq2
);
788 ehea_refill_rq3(pr
, processed_rq3
);
793 #define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
795 static void reset_sq_restart_flag(struct ehea_port
*port
)
799 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
800 struct ehea_port_res
*pr
= &port
->port_res
[i
];
801 pr
->sq_restart_flag
= 0;
803 wake_up(&port
->restart_wq
);
806 static void check_sqs(struct ehea_port
*port
)
808 struct ehea_swqe
*swqe
;
812 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
813 struct ehea_port_res
*pr
= &port
->port_res
[i
];
816 swqe
= ehea_get_swqe(pr
->qp
, &swqe_index
);
817 memset(swqe
, 0, SWQE_HEADER_SIZE
);
818 atomic_dec(&pr
->swqe_avail
);
820 swqe
->tx_control
|= EHEA_SWQE_PURGE
;
821 swqe
->wr_id
= SWQE_RESTART_CHECK
;
822 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
823 swqe
->tx_control
|= EHEA_SWQE_IMM_DATA_PRESENT
;
824 swqe
->immediate_data_length
= 80;
826 ehea_post_swqe(pr
->qp
, swqe
);
828 ret
= wait_event_timeout(port
->restart_wq
,
829 pr
->sq_restart_flag
== 0,
830 msecs_to_jiffies(100));
833 ehea_error("HW/SW queues out of sync");
834 ehea_schedule_port_reset(pr
->port
);
841 static struct ehea_cqe
*ehea_proc_cqes(struct ehea_port_res
*pr
, int my_quota
)
844 struct ehea_cq
*send_cq
= pr
->send_cq
;
845 struct ehea_cqe
*cqe
;
846 int quota
= my_quota
;
852 cqe
= ehea_poll_cq(send_cq
);
853 while (cqe
&& (quota
> 0)) {
854 ehea_inc_cq(send_cq
);
859 if (cqe
->wr_id
== SWQE_RESTART_CHECK
) {
860 pr
->sq_restart_flag
= 1;
865 if (cqe
->status
& EHEA_CQE_STAT_ERR_MASK
) {
866 ehea_error("Bad send completion status=0x%04X",
869 if (netif_msg_tx_err(pr
->port
))
870 ehea_dump(cqe
, sizeof(*cqe
), "Send CQE");
872 if (cqe
->status
& EHEA_CQE_STAT_RESET_MASK
) {
873 ehea_error("Resetting port");
874 ehea_schedule_port_reset(pr
->port
);
879 if (netif_msg_tx_done(pr
->port
))
880 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
882 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE
, cqe
->wr_id
)
883 == EHEA_SWQE2_TYPE
)) {
885 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, cqe
->wr_id
);
886 skb
= pr
->sq_skba
.arr
[index
];
888 pr
->sq_skba
.arr
[index
] = NULL
;
891 swqe_av
+= EHEA_BMASK_GET(EHEA_WR_ID_REFILL
, cqe
->wr_id
);
894 cqe
= ehea_poll_cq(send_cq
);
897 ehea_update_feca(send_cq
, cqe_counter
);
898 atomic_add(swqe_av
, &pr
->swqe_avail
);
900 spin_lock_irqsave(&pr
->netif_queue
, flags
);
902 if (pr
->queue_stopped
&& (atomic_read(&pr
->swqe_avail
)
903 >= pr
->swqe_refill_th
)) {
904 netif_wake_queue(pr
->port
->netdev
);
905 pr
->queue_stopped
= 0;
907 spin_unlock_irqrestore(&pr
->netif_queue
, flags
);
908 wake_up(&pr
->port
->swqe_avail_wq
);
913 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
914 #define EHEA_POLL_MAX_CQES 65535
916 static int ehea_poll(struct napi_struct
*napi
, int budget
)
918 struct ehea_port_res
*pr
= container_of(napi
, struct ehea_port_res
,
920 struct net_device
*dev
= pr
->port
->netdev
;
921 struct ehea_cqe
*cqe
;
922 struct ehea_cqe
*cqe_skb
= NULL
;
923 int force_irq
, wqe_index
;
926 force_irq
= (pr
->poll_counter
> EHEA_NAPI_POLL_NUM_BEFORE_IRQ
);
927 cqe_skb
= ehea_proc_cqes(pr
, EHEA_POLL_MAX_CQES
);
930 rx
+= ehea_proc_rwqes(dev
, pr
, budget
- rx
);
932 while ((rx
!= budget
) || force_irq
) {
933 pr
->poll_counter
= 0;
936 ehea_reset_cq_ep(pr
->recv_cq
);
937 ehea_reset_cq_ep(pr
->send_cq
);
938 ehea_reset_cq_n1(pr
->recv_cq
);
939 ehea_reset_cq_n1(pr
->send_cq
);
941 cqe
= ehea_poll_rq1(pr
->qp
, &wqe_index
);
942 cqe_skb
= ehea_poll_cq(pr
->send_cq
);
944 if (!cqe
&& !cqe_skb
)
947 if (!napi_reschedule(napi
))
950 cqe_skb
= ehea_proc_cqes(pr
, EHEA_POLL_MAX_CQES
);
951 rx
+= ehea_proc_rwqes(dev
, pr
, budget
- rx
);
958 #ifdef CONFIG_NET_POLL_CONTROLLER
959 static void ehea_netpoll(struct net_device
*dev
)
961 struct ehea_port
*port
= netdev_priv(dev
);
964 for (i
= 0; i
< port
->num_def_qps
; i
++)
965 napi_schedule(&port
->port_res
[i
].napi
);
969 static irqreturn_t
ehea_recv_irq_handler(int irq
, void *param
)
971 struct ehea_port_res
*pr
= param
;
973 napi_schedule(&pr
->napi
);
978 static irqreturn_t
ehea_qp_aff_irq_handler(int irq
, void *param
)
980 struct ehea_port
*port
= param
;
981 struct ehea_eqe
*eqe
;
984 u64 resource_type
, aer
, aerr
;
987 eqe
= ehea_poll_eq(port
->qp_eq
);
990 qp_token
= EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN
, eqe
->entry
);
991 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
992 eqe
->entry
, qp_token
);
994 qp
= port
->port_res
[qp_token
].qp
;
996 resource_type
= ehea_error_data(port
->adapter
, qp
->fw_handle
,
999 if (resource_type
== EHEA_AER_RESTYPE_QP
) {
1000 if ((aer
& EHEA_AER_RESET_MASK
) ||
1001 (aerr
& EHEA_AERR_RESET_MASK
))
1004 reset_port
= 1; /* Reset in case of CQ or EQ error */
1006 eqe
= ehea_poll_eq(port
->qp_eq
);
1010 ehea_error("Resetting port");
1011 ehea_schedule_port_reset(port
);
1017 static struct ehea_port
*ehea_get_port(struct ehea_adapter
*adapter
,
1022 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
1023 if (adapter
->port
[i
])
1024 if (adapter
->port
[i
]->logical_port_id
== logical_port
)
1025 return adapter
->port
[i
];
1029 int ehea_sense_port_attr(struct ehea_port
*port
)
1033 struct hcp_ehea_port_cb0
*cb0
;
1035 /* may be called via ehea_neq_tasklet() */
1036 cb0
= (void *)get_zeroed_page(GFP_ATOMIC
);
1038 ehea_error("no mem for cb0");
1043 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
1044 port
->logical_port_id
, H_PORT_CB0
,
1045 EHEA_BMASK_SET(H_PORT_CB0_ALL
, 0xFFFF),
1047 if (hret
!= H_SUCCESS
) {
1053 port
->mac_addr
= cb0
->port_mac_addr
<< 16;
1055 if (!is_valid_ether_addr((u8
*)&port
->mac_addr
)) {
1056 ret
= -EADDRNOTAVAIL
;
1061 switch (cb0
->port_speed
) {
1063 port
->port_speed
= EHEA_SPEED_10M
;
1064 port
->full_duplex
= 0;
1067 port
->port_speed
= EHEA_SPEED_10M
;
1068 port
->full_duplex
= 1;
1070 case H_SPEED_100M_H
:
1071 port
->port_speed
= EHEA_SPEED_100M
;
1072 port
->full_duplex
= 0;
1074 case H_SPEED_100M_F
:
1075 port
->port_speed
= EHEA_SPEED_100M
;
1076 port
->full_duplex
= 1;
1079 port
->port_speed
= EHEA_SPEED_1G
;
1080 port
->full_duplex
= 1;
1083 port
->port_speed
= EHEA_SPEED_10G
;
1084 port
->full_duplex
= 1;
1087 port
->port_speed
= 0;
1088 port
->full_duplex
= 0;
1093 port
->num_mcs
= cb0
->num_default_qps
;
1095 /* Number of default QPs */
1097 port
->num_def_qps
= cb0
->num_default_qps
;
1099 port
->num_def_qps
= 1;
1101 if (!port
->num_def_qps
) {
1106 port
->num_tx_qps
= num_tx_qps
;
1108 if (port
->num_def_qps
>= port
->num_tx_qps
)
1109 port
->num_add_tx_qps
= 0;
1111 port
->num_add_tx_qps
= port
->num_tx_qps
- port
->num_def_qps
;
1115 if (ret
|| netif_msg_probe(port
))
1116 ehea_dump(cb0
, sizeof(*cb0
), "ehea_sense_port_attr");
1117 free_page((unsigned long)cb0
);
1122 int ehea_set_portspeed(struct ehea_port
*port
, u32 port_speed
)
1124 struct hcp_ehea_port_cb4
*cb4
;
1128 cb4
= (void *)get_zeroed_page(GFP_KERNEL
);
1130 ehea_error("no mem for cb4");
1135 cb4
->port_speed
= port_speed
;
1137 netif_carrier_off(port
->netdev
);
1139 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1140 port
->logical_port_id
,
1141 H_PORT_CB4
, H_PORT_CB4_SPEED
, cb4
);
1142 if (hret
== H_SUCCESS
) {
1143 port
->autoneg
= port_speed
== EHEA_SPEED_AUTONEG
? 1 : 0;
1145 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
1146 port
->logical_port_id
,
1147 H_PORT_CB4
, H_PORT_CB4_SPEED
,
1149 if (hret
== H_SUCCESS
) {
1150 switch (cb4
->port_speed
) {
1152 port
->port_speed
= EHEA_SPEED_10M
;
1153 port
->full_duplex
= 0;
1156 port
->port_speed
= EHEA_SPEED_10M
;
1157 port
->full_duplex
= 1;
1159 case H_SPEED_100M_H
:
1160 port
->port_speed
= EHEA_SPEED_100M
;
1161 port
->full_duplex
= 0;
1163 case H_SPEED_100M_F
:
1164 port
->port_speed
= EHEA_SPEED_100M
;
1165 port
->full_duplex
= 1;
1168 port
->port_speed
= EHEA_SPEED_1G
;
1169 port
->full_duplex
= 1;
1172 port
->port_speed
= EHEA_SPEED_10G
;
1173 port
->full_duplex
= 1;
1176 port
->port_speed
= 0;
1177 port
->full_duplex
= 0;
1181 ehea_error("Failed sensing port speed");
1185 if (hret
== H_AUTHORITY
) {
1186 ehea_info("Hypervisor denied setting port speed");
1190 ehea_error("Failed setting port speed");
1193 if (!prop_carrier_state
|| (port
->phy_link
== EHEA_PHY_LINK_UP
))
1194 netif_carrier_on(port
->netdev
);
1196 free_page((unsigned long)cb4
);
1201 static void ehea_parse_eqe(struct ehea_adapter
*adapter
, u64 eqe
)
1206 struct ehea_port
*port
;
1208 ec
= EHEA_BMASK_GET(NEQE_EVENT_CODE
, eqe
);
1209 portnum
= EHEA_BMASK_GET(NEQE_PORTNUM
, eqe
);
1210 port
= ehea_get_port(adapter
, portnum
);
1213 case EHEA_EC_PORTSTATE_CHG
: /* port state change */
1216 ehea_error("unknown portnum %x", portnum
);
1220 if (EHEA_BMASK_GET(NEQE_PORT_UP
, eqe
)) {
1221 if (!netif_carrier_ok(port
->netdev
)) {
1222 ret
= ehea_sense_port_attr(port
);
1224 ehea_error("failed resensing port "
1229 if (netif_msg_link(port
))
1230 ehea_info("%s: Logical port up: %dMbps "
1234 port
->full_duplex
==
1235 1 ? "Full" : "Half");
1237 netif_carrier_on(port
->netdev
);
1238 netif_wake_queue(port
->netdev
);
1241 if (netif_carrier_ok(port
->netdev
)) {
1242 if (netif_msg_link(port
))
1243 ehea_info("%s: Logical port down",
1244 port
->netdev
->name
);
1245 netif_carrier_off(port
->netdev
);
1246 netif_stop_queue(port
->netdev
);
1249 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP
, eqe
)) {
1250 port
->phy_link
= EHEA_PHY_LINK_UP
;
1251 if (netif_msg_link(port
))
1252 ehea_info("%s: Physical port up",
1253 port
->netdev
->name
);
1254 if (prop_carrier_state
)
1255 netif_carrier_on(port
->netdev
);
1257 port
->phy_link
= EHEA_PHY_LINK_DOWN
;
1258 if (netif_msg_link(port
))
1259 ehea_info("%s: Physical port down",
1260 port
->netdev
->name
);
1261 if (prop_carrier_state
)
1262 netif_carrier_off(port
->netdev
);
1265 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY
, eqe
))
1266 ehea_info("External switch port is primary port");
1268 ehea_info("External switch port is backup port");
1271 case EHEA_EC_ADAPTER_MALFUNC
:
1272 ehea_error("Adapter malfunction");
1274 case EHEA_EC_PORT_MALFUNC
:
1275 ehea_info("Port malfunction: Device: %s", port
->netdev
->name
);
1276 netif_carrier_off(port
->netdev
);
1277 netif_stop_queue(port
->netdev
);
1280 ehea_error("unknown event code %x, eqe=0x%llX", ec
, eqe
);
1285 static void ehea_neq_tasklet(unsigned long data
)
1287 struct ehea_adapter
*adapter
= (struct ehea_adapter
*)data
;
1288 struct ehea_eqe
*eqe
;
1291 eqe
= ehea_poll_eq(adapter
->neq
);
1292 ehea_debug("eqe=%p", eqe
);
1295 ehea_debug("*eqe=%lx", eqe
->entry
);
1296 ehea_parse_eqe(adapter
, eqe
->entry
);
1297 eqe
= ehea_poll_eq(adapter
->neq
);
1298 ehea_debug("next eqe=%p", eqe
);
1301 event_mask
= EHEA_BMASK_SET(NELR_PORTSTATE_CHG
, 1)
1302 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC
, 1)
1303 | EHEA_BMASK_SET(NELR_PORT_MALFUNC
, 1);
1305 ehea_h_reset_events(adapter
->handle
,
1306 adapter
->neq
->fw_handle
, event_mask
);
1309 static irqreturn_t
ehea_interrupt_neq(int irq
, void *param
)
1311 struct ehea_adapter
*adapter
= param
;
1312 tasklet_hi_schedule(&adapter
->neq_tasklet
);
1317 static int ehea_fill_port_res(struct ehea_port_res
*pr
)
1320 struct ehea_qp_init_attr
*init_attr
= &pr
->qp
->init_attr
;
1322 ehea_init_fill_rq1(pr
, init_attr
->act_nr_rwqes_rq1
1323 - init_attr
->act_nr_rwqes_rq2
1324 - init_attr
->act_nr_rwqes_rq3
- 1);
1326 ret
= ehea_refill_rq2(pr
, init_attr
->act_nr_rwqes_rq2
- 1);
1328 ret
|= ehea_refill_rq3(pr
, init_attr
->act_nr_rwqes_rq3
- 1);
1333 static int ehea_reg_interrupts(struct net_device
*dev
)
1335 struct ehea_port
*port
= netdev_priv(dev
);
1336 struct ehea_port_res
*pr
;
1340 snprintf(port
->int_aff_name
, EHEA_IRQ_NAME_SIZE
- 1, "%s-aff",
1343 ret
= ibmebus_request_irq(port
->qp_eq
->attr
.ist1
,
1344 ehea_qp_aff_irq_handler
,
1345 IRQF_DISABLED
, port
->int_aff_name
, port
);
1347 ehea_error("failed registering irq for qp_aff_irq_handler:"
1348 "ist=%X", port
->qp_eq
->attr
.ist1
);
1352 if (netif_msg_ifup(port
))
1353 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1354 "registered", port
->qp_eq
->attr
.ist1
);
1357 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
1358 pr
= &port
->port_res
[i
];
1359 snprintf(pr
->int_send_name
, EHEA_IRQ_NAME_SIZE
- 1,
1360 "%s-queue%d", dev
->name
, i
);
1361 ret
= ibmebus_request_irq(pr
->eq
->attr
.ist1
,
1362 ehea_recv_irq_handler
,
1363 IRQF_DISABLED
, pr
->int_send_name
,
1366 ehea_error("failed registering irq for ehea_queue "
1367 "port_res_nr:%d, ist=%X", i
,
1371 if (netif_msg_ifup(port
))
1372 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1373 "%d registered", pr
->eq
->attr
.ist1
, i
);
1381 u32 ist
= port
->port_res
[i
].eq
->attr
.ist1
;
1382 ibmebus_free_irq(ist
, &port
->port_res
[i
]);
1386 ibmebus_free_irq(port
->qp_eq
->attr
.ist1
, port
);
1387 i
= port
->num_def_qps
;
1393 static void ehea_free_interrupts(struct net_device
*dev
)
1395 struct ehea_port
*port
= netdev_priv(dev
);
1396 struct ehea_port_res
*pr
;
1401 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
1402 pr
= &port
->port_res
[i
];
1403 ibmebus_free_irq(pr
->eq
->attr
.ist1
, pr
);
1404 if (netif_msg_intr(port
))
1405 ehea_info("free send irq for res %d with handle 0x%X",
1406 i
, pr
->eq
->attr
.ist1
);
1409 /* associated events */
1410 ibmebus_free_irq(port
->qp_eq
->attr
.ist1
, port
);
1411 if (netif_msg_intr(port
))
1412 ehea_info("associated event interrupt for handle 0x%X freed",
1413 port
->qp_eq
->attr
.ist1
);
1416 static int ehea_configure_port(struct ehea_port
*port
)
1420 struct hcp_ehea_port_cb0
*cb0
;
1423 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
1427 cb0
->port_rc
= EHEA_BMASK_SET(PXLY_RC_VALID
, 1)
1428 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM
, 1)
1429 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM
, 1)
1430 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT
, 1)
1431 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER
,
1432 PXLY_RC_VLAN_FILTER
)
1433 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME
, 1);
1435 for (i
= 0; i
< port
->num_mcs
; i
++)
1437 cb0
->default_qpn_arr
[i
] =
1438 port
->port_res
[i
].qp
->init_attr
.qp_nr
;
1440 cb0
->default_qpn_arr
[i
] =
1441 port
->port_res
[0].qp
->init_attr
.qp_nr
;
1443 if (netif_msg_ifup(port
))
1444 ehea_dump(cb0
, sizeof(*cb0
), "ehea_configure_port");
1446 mask
= EHEA_BMASK_SET(H_PORT_CB0_PRC
, 1)
1447 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY
, 1);
1449 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1450 port
->logical_port_id
,
1451 H_PORT_CB0
, mask
, cb0
);
1453 if (hret
!= H_SUCCESS
)
1459 free_page((unsigned long)cb0
);
1464 int ehea_gen_smrs(struct ehea_port_res
*pr
)
1467 struct ehea_adapter
*adapter
= pr
->port
->adapter
;
1469 ret
= ehea_gen_smr(adapter
, &adapter
->mr
, &pr
->send_mr
);
1473 ret
= ehea_gen_smr(adapter
, &adapter
->mr
, &pr
->recv_mr
);
1480 ehea_rem_mr(&pr
->send_mr
);
1482 ehea_error("Generating SMRS failed\n");
1486 int ehea_rem_smrs(struct ehea_port_res
*pr
)
1488 if ((ehea_rem_mr(&pr
->send_mr
)) ||
1489 (ehea_rem_mr(&pr
->recv_mr
)))
1495 static int ehea_init_q_skba(struct ehea_q_skb_arr
*q_skba
, int max_q_entries
)
1497 int arr_size
= sizeof(void *) * max_q_entries
;
1499 q_skba
->arr
= vzalloc(arr_size
);
1503 q_skba
->len
= max_q_entries
;
1505 q_skba
->os_skbs
= 0;
1510 static int ehea_init_port_res(struct ehea_port
*port
, struct ehea_port_res
*pr
,
1511 struct port_res_cfg
*pr_cfg
, int queue_token
)
1513 struct ehea_adapter
*adapter
= port
->adapter
;
1514 enum ehea_eq_type eq_type
= EHEA_EQ
;
1515 struct ehea_qp_init_attr
*init_attr
= NULL
;
1517 u64 tx_bytes
, rx_bytes
, tx_packets
, rx_packets
;
1519 tx_bytes
= pr
->tx_bytes
;
1520 tx_packets
= pr
->tx_packets
;
1521 rx_bytes
= pr
->rx_bytes
;
1522 rx_packets
= pr
->rx_packets
;
1524 memset(pr
, 0, sizeof(struct ehea_port_res
));
1526 pr
->tx_bytes
= rx_bytes
;
1527 pr
->tx_packets
= tx_packets
;
1528 pr
->rx_bytes
= rx_bytes
;
1529 pr
->rx_packets
= rx_packets
;
1532 spin_lock_init(&pr
->xmit_lock
);
1533 spin_lock_init(&pr
->netif_queue
);
1535 pr
->eq
= ehea_create_eq(adapter
, eq_type
, EHEA_MAX_ENTRIES_EQ
, 0);
1537 ehea_error("create_eq failed (eq)");
1541 pr
->recv_cq
= ehea_create_cq(adapter
, pr_cfg
->max_entries_rcq
,
1543 port
->logical_port_id
);
1545 ehea_error("create_cq failed (cq_recv)");
1549 pr
->send_cq
= ehea_create_cq(adapter
, pr_cfg
->max_entries_scq
,
1551 port
->logical_port_id
);
1553 ehea_error("create_cq failed (cq_send)");
1557 if (netif_msg_ifup(port
))
1558 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1559 pr
->send_cq
->attr
.act_nr_of_cqes
,
1560 pr
->recv_cq
->attr
.act_nr_of_cqes
);
1562 init_attr
= kzalloc(sizeof(*init_attr
), GFP_KERNEL
);
1565 ehea_error("no mem for ehea_qp_init_attr");
1569 init_attr
->low_lat_rq1
= 1;
1570 init_attr
->signalingtype
= 1; /* generate CQE if specified in WQE */
1571 init_attr
->rq_count
= 3;
1572 init_attr
->qp_token
= queue_token
;
1573 init_attr
->max_nr_send_wqes
= pr_cfg
->max_entries_sq
;
1574 init_attr
->max_nr_rwqes_rq1
= pr_cfg
->max_entries_rq1
;
1575 init_attr
->max_nr_rwqes_rq2
= pr_cfg
->max_entries_rq2
;
1576 init_attr
->max_nr_rwqes_rq3
= pr_cfg
->max_entries_rq3
;
1577 init_attr
->wqe_size_enc_sq
= EHEA_SG_SQ
;
1578 init_attr
->wqe_size_enc_rq1
= EHEA_SG_RQ1
;
1579 init_attr
->wqe_size_enc_rq2
= EHEA_SG_RQ2
;
1580 init_attr
->wqe_size_enc_rq3
= EHEA_SG_RQ3
;
1581 init_attr
->rq2_threshold
= EHEA_RQ2_THRESHOLD
;
1582 init_attr
->rq3_threshold
= EHEA_RQ3_THRESHOLD
;
1583 init_attr
->port_nr
= port
->logical_port_id
;
1584 init_attr
->send_cq_handle
= pr
->send_cq
->fw_handle
;
1585 init_attr
->recv_cq_handle
= pr
->recv_cq
->fw_handle
;
1586 init_attr
->aff_eq_handle
= port
->qp_eq
->fw_handle
;
1588 pr
->qp
= ehea_create_qp(adapter
, adapter
->pd
, init_attr
);
1590 ehea_error("create_qp failed");
1595 if (netif_msg_ifup(port
))
1596 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1597 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr
->qp_nr
,
1598 init_attr
->act_nr_send_wqes
,
1599 init_attr
->act_nr_rwqes_rq1
,
1600 init_attr
->act_nr_rwqes_rq2
,
1601 init_attr
->act_nr_rwqes_rq3
);
1603 pr
->sq_skba_size
= init_attr
->act_nr_send_wqes
+ 1;
1605 ret
= ehea_init_q_skba(&pr
->sq_skba
, pr
->sq_skba_size
);
1606 ret
|= ehea_init_q_skba(&pr
->rq1_skba
, init_attr
->act_nr_rwqes_rq1
+ 1);
1607 ret
|= ehea_init_q_skba(&pr
->rq2_skba
, init_attr
->act_nr_rwqes_rq2
+ 1);
1608 ret
|= ehea_init_q_skba(&pr
->rq3_skba
, init_attr
->act_nr_rwqes_rq3
+ 1);
1612 pr
->swqe_refill_th
= init_attr
->act_nr_send_wqes
/ 10;
1613 if (ehea_gen_smrs(pr
) != 0) {
1618 atomic_set(&pr
->swqe_avail
, init_attr
->act_nr_send_wqes
- 1);
1622 netif_napi_add(pr
->port
->netdev
, &pr
->napi
, ehea_poll
, 64);
1624 pr
->lro_mgr
.max_aggr
= pr
->port
->lro_max_aggr
;
1625 pr
->lro_mgr
.max_desc
= MAX_LRO_DESCRIPTORS
;
1626 pr
->lro_mgr
.lro_arr
= pr
->lro_desc
;
1627 pr
->lro_mgr
.get_skb_header
= get_skb_hdr
;
1628 pr
->lro_mgr
.features
= LRO_F_NAPI
| LRO_F_EXTRACT_VLAN_ID
;
1629 pr
->lro_mgr
.dev
= port
->netdev
;
1630 pr
->lro_mgr
.ip_summed
= CHECKSUM_UNNECESSARY
;
1631 pr
->lro_mgr
.ip_summed_aggr
= CHECKSUM_UNNECESSARY
;
1638 vfree(pr
->sq_skba
.arr
);
1639 vfree(pr
->rq1_skba
.arr
);
1640 vfree(pr
->rq2_skba
.arr
);
1641 vfree(pr
->rq3_skba
.arr
);
1642 ehea_destroy_qp(pr
->qp
);
1643 ehea_destroy_cq(pr
->send_cq
);
1644 ehea_destroy_cq(pr
->recv_cq
);
1645 ehea_destroy_eq(pr
->eq
);
1650 static int ehea_clean_portres(struct ehea_port
*port
, struct ehea_port_res
*pr
)
1655 netif_napi_del(&pr
->napi
);
1657 ret
= ehea_destroy_qp(pr
->qp
);
1660 ehea_destroy_cq(pr
->send_cq
);
1661 ehea_destroy_cq(pr
->recv_cq
);
1662 ehea_destroy_eq(pr
->eq
);
1664 for (i
= 0; i
< pr
->rq1_skba
.len
; i
++)
1665 if (pr
->rq1_skba
.arr
[i
])
1666 dev_kfree_skb(pr
->rq1_skba
.arr
[i
]);
1668 for (i
= 0; i
< pr
->rq2_skba
.len
; i
++)
1669 if (pr
->rq2_skba
.arr
[i
])
1670 dev_kfree_skb(pr
->rq2_skba
.arr
[i
]);
1672 for (i
= 0; i
< pr
->rq3_skba
.len
; i
++)
1673 if (pr
->rq3_skba
.arr
[i
])
1674 dev_kfree_skb(pr
->rq3_skba
.arr
[i
]);
1676 for (i
= 0; i
< pr
->sq_skba
.len
; i
++)
1677 if (pr
->sq_skba
.arr
[i
])
1678 dev_kfree_skb(pr
->sq_skba
.arr
[i
]);
1680 vfree(pr
->rq1_skba
.arr
);
1681 vfree(pr
->rq2_skba
.arr
);
1682 vfree(pr
->rq3_skba
.arr
);
1683 vfree(pr
->sq_skba
.arr
);
1684 ret
= ehea_rem_smrs(pr
);
1690 * The write_* functions store information in swqe which is used by
1691 * the hardware to calculate the ip/tcp/udp checksum
1694 static inline void write_ip_start_end(struct ehea_swqe
*swqe
,
1695 const struct sk_buff
*skb
)
1697 swqe
->ip_start
= skb_network_offset(skb
);
1698 swqe
->ip_end
= (u8
)(swqe
->ip_start
+ ip_hdrlen(skb
) - 1);
1701 static inline void write_tcp_offset_end(struct ehea_swqe
*swqe
,
1702 const struct sk_buff
*skb
)
1705 (u8
)(swqe
->ip_end
+ 1 + offsetof(struct tcphdr
, check
));
1707 swqe
->tcp_end
= (u16
)skb
->len
- 1;
1710 static inline void write_udp_offset_end(struct ehea_swqe
*swqe
,
1711 const struct sk_buff
*skb
)
1714 (u8
)(swqe
->ip_end
+ 1 + offsetof(struct udphdr
, check
));
1716 swqe
->tcp_end
= (u16
)skb
->len
- 1;
1720 static void write_swqe2_TSO(struct sk_buff
*skb
,
1721 struct ehea_swqe
*swqe
, u32 lkey
)
1723 struct ehea_vsgentry
*sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1724 u8
*imm_data
= &swqe
->u
.immdata_desc
.immediate_data
[0];
1725 int skb_data_size
= skb_headlen(skb
);
1728 /* Packet is TCP with TSO enabled */
1729 swqe
->tx_control
|= EHEA_SWQE_TSO
;
1730 swqe
->mss
= skb_shinfo(skb
)->gso_size
;
1731 /* copy only eth/ip/tcp headers to immediate data and
1732 * the rest of skb->data to sg1entry
1734 headersize
= ETH_HLEN
+ ip_hdrlen(skb
) + tcp_hdrlen(skb
);
1736 skb_data_size
= skb_headlen(skb
);
1738 if (skb_data_size
>= headersize
) {
1739 /* copy immediate data */
1740 skb_copy_from_linear_data(skb
, imm_data
, headersize
);
1741 swqe
->immediate_data_length
= headersize
;
1743 if (skb_data_size
> headersize
) {
1744 /* set sg1entry data */
1745 sg1entry
->l_key
= lkey
;
1746 sg1entry
->len
= skb_data_size
- headersize
;
1748 ehea_map_vaddr(skb
->data
+ headersize
);
1749 swqe
->descriptors
++;
1752 ehea_error("cannot handle fragmented headers");
1755 static void write_swqe2_nonTSO(struct sk_buff
*skb
,
1756 struct ehea_swqe
*swqe
, u32 lkey
)
1758 int skb_data_size
= skb_headlen(skb
);
1759 u8
*imm_data
= &swqe
->u
.immdata_desc
.immediate_data
[0];
1760 struct ehea_vsgentry
*sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1762 /* Packet is any nonTSO type
1764 * Copy as much as possible skb->data to immediate data and
1765 * the rest to sg1entry
1767 if (skb_data_size
>= SWQE2_MAX_IMM
) {
1768 /* copy immediate data */
1769 skb_copy_from_linear_data(skb
, imm_data
, SWQE2_MAX_IMM
);
1771 swqe
->immediate_data_length
= SWQE2_MAX_IMM
;
1773 if (skb_data_size
> SWQE2_MAX_IMM
) {
1774 /* copy sg1entry data */
1775 sg1entry
->l_key
= lkey
;
1776 sg1entry
->len
= skb_data_size
- SWQE2_MAX_IMM
;
1778 ehea_map_vaddr(skb
->data
+ SWQE2_MAX_IMM
);
1779 swqe
->descriptors
++;
1782 skb_copy_from_linear_data(skb
, imm_data
, skb_data_size
);
1783 swqe
->immediate_data_length
= skb_data_size
;
1787 static inline void write_swqe2_data(struct sk_buff
*skb
, struct net_device
*dev
,
1788 struct ehea_swqe
*swqe
, u32 lkey
)
1790 struct ehea_vsgentry
*sg_list
, *sg1entry
, *sgentry
;
1792 int nfrags
, sg1entry_contains_frag_data
, i
;
1794 nfrags
= skb_shinfo(skb
)->nr_frags
;
1795 sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1796 sg_list
= (struct ehea_vsgentry
*)&swqe
->u
.immdata_desc
.sg_list
;
1797 swqe
->descriptors
= 0;
1798 sg1entry_contains_frag_data
= 0;
1800 if ((dev
->features
& NETIF_F_TSO
) && skb_shinfo(skb
)->gso_size
)
1801 write_swqe2_TSO(skb
, swqe
, lkey
);
1803 write_swqe2_nonTSO(skb
, swqe
, lkey
);
1805 /* write descriptors */
1807 if (swqe
->descriptors
== 0) {
1808 /* sg1entry not yet used */
1809 frag
= &skb_shinfo(skb
)->frags
[0];
1811 /* copy sg1entry data */
1812 sg1entry
->l_key
= lkey
;
1813 sg1entry
->len
= frag
->size
;
1815 ehea_map_vaddr(page_address(frag
->page
)
1816 + frag
->page_offset
);
1817 swqe
->descriptors
++;
1818 sg1entry_contains_frag_data
= 1;
1821 for (i
= sg1entry_contains_frag_data
; i
< nfrags
; i
++) {
1823 frag
= &skb_shinfo(skb
)->frags
[i
];
1824 sgentry
= &sg_list
[i
- sg1entry_contains_frag_data
];
1826 sgentry
->l_key
= lkey
;
1827 sgentry
->len
= frag
->size
;
1829 ehea_map_vaddr(page_address(frag
->page
)
1830 + frag
->page_offset
);
1831 swqe
->descriptors
++;
1836 static int ehea_broadcast_reg_helper(struct ehea_port
*port
, u32 hcallid
)
1842 /* De/Register untagged packets */
1843 reg_type
= EHEA_BCMC_BROADCAST
| EHEA_BCMC_UNTAGGED
;
1844 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1845 port
->logical_port_id
,
1846 reg_type
, port
->mac_addr
, 0, hcallid
);
1847 if (hret
!= H_SUCCESS
) {
1848 ehea_error("%sregistering bc address failed (tagged)",
1849 hcallid
== H_REG_BCMC
? "" : "de");
1854 /* De/Register VLAN packets */
1855 reg_type
= EHEA_BCMC_BROADCAST
| EHEA_BCMC_VLANID_ALL
;
1856 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1857 port
->logical_port_id
,
1858 reg_type
, port
->mac_addr
, 0, hcallid
);
1859 if (hret
!= H_SUCCESS
) {
1860 ehea_error("%sregistering bc address failed (vlan)",
1861 hcallid
== H_REG_BCMC
? "" : "de");
1868 static int ehea_set_mac_addr(struct net_device
*dev
, void *sa
)
1870 struct ehea_port
*port
= netdev_priv(dev
);
1871 struct sockaddr
*mac_addr
= sa
;
1872 struct hcp_ehea_port_cb0
*cb0
;
1876 if (!is_valid_ether_addr(mac_addr
->sa_data
)) {
1877 ret
= -EADDRNOTAVAIL
;
1881 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
1883 ehea_error("no mem for cb0");
1888 memcpy(&(cb0
->port_mac_addr
), &(mac_addr
->sa_data
[0]), ETH_ALEN
);
1890 cb0
->port_mac_addr
= cb0
->port_mac_addr
>> 16;
1892 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1893 port
->logical_port_id
, H_PORT_CB0
,
1894 EHEA_BMASK_SET(H_PORT_CB0_MAC
, 1), cb0
);
1895 if (hret
!= H_SUCCESS
) {
1900 memcpy(dev
->dev_addr
, mac_addr
->sa_data
, dev
->addr_len
);
1902 /* Deregister old MAC in pHYP */
1903 if (port
->state
== EHEA_PORT_UP
) {
1904 ret
= ehea_broadcast_reg_helper(port
, H_DEREG_BCMC
);
1909 port
->mac_addr
= cb0
->port_mac_addr
<< 16;
1911 /* Register new MAC in pHYP */
1912 if (port
->state
== EHEA_PORT_UP
) {
1913 ret
= ehea_broadcast_reg_helper(port
, H_REG_BCMC
);
1921 ehea_update_bcmc_registrations();
1923 free_page((unsigned long)cb0
);
1928 static void ehea_promiscuous_error(u64 hret
, int enable
)
1930 if (hret
== H_AUTHORITY
)
1931 ehea_info("Hypervisor denied %sabling promiscuous mode",
1932 enable
== 1 ? "en" : "dis");
1934 ehea_error("failed %sabling promiscuous mode",
1935 enable
== 1 ? "en" : "dis");
1938 static void ehea_promiscuous(struct net_device
*dev
, int enable
)
1940 struct ehea_port
*port
= netdev_priv(dev
);
1941 struct hcp_ehea_port_cb7
*cb7
;
1944 if (enable
== port
->promisc
)
1947 cb7
= (void *)get_zeroed_page(GFP_ATOMIC
);
1949 ehea_error("no mem for cb7");
1953 /* Modify Pxs_DUCQPN in CB7 */
1954 cb7
->def_uc_qpn
= enable
== 1 ? port
->port_res
[0].qp
->fw_handle
: 0;
1956 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1957 port
->logical_port_id
,
1958 H_PORT_CB7
, H_PORT_CB7_DUCQPN
, cb7
);
1960 ehea_promiscuous_error(hret
, enable
);
1964 port
->promisc
= enable
;
1966 free_page((unsigned long)cb7
);
1969 static u64
ehea_multicast_reg_helper(struct ehea_port
*port
, u64 mc_mac_addr
,
1975 reg_type
= EHEA_BCMC_SCOPE_ALL
| EHEA_BCMC_MULTICAST
1976 | EHEA_BCMC_UNTAGGED
;
1978 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1979 port
->logical_port_id
,
1980 reg_type
, mc_mac_addr
, 0, hcallid
);
1984 reg_type
= EHEA_BCMC_SCOPE_ALL
| EHEA_BCMC_MULTICAST
1985 | EHEA_BCMC_VLANID_ALL
;
1987 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1988 port
->logical_port_id
,
1989 reg_type
, mc_mac_addr
, 0, hcallid
);
1994 static int ehea_drop_multicast_list(struct net_device
*dev
)
1996 struct ehea_port
*port
= netdev_priv(dev
);
1997 struct ehea_mc_list
*mc_entry
= port
->mc_list
;
1998 struct list_head
*pos
;
1999 struct list_head
*temp
;
2003 list_for_each_safe(pos
, temp
, &(port
->mc_list
->list
)) {
2004 mc_entry
= list_entry(pos
, struct ehea_mc_list
, list
);
2006 hret
= ehea_multicast_reg_helper(port
, mc_entry
->macaddr
,
2009 ehea_error("failed deregistering mcast MAC");
2019 static void ehea_allmulti(struct net_device
*dev
, int enable
)
2021 struct ehea_port
*port
= netdev_priv(dev
);
2024 if (!port
->allmulti
) {
2026 /* Enable ALLMULTI */
2027 ehea_drop_multicast_list(dev
);
2028 hret
= ehea_multicast_reg_helper(port
, 0, H_REG_BCMC
);
2032 ehea_error("failed enabling IFF_ALLMULTI");
2036 /* Disable ALLMULTI */
2037 hret
= ehea_multicast_reg_helper(port
, 0, H_DEREG_BCMC
);
2041 ehea_error("failed disabling IFF_ALLMULTI");
2045 static void ehea_add_multicast_entry(struct ehea_port
*port
, u8
*mc_mac_addr
)
2047 struct ehea_mc_list
*ehea_mcl_entry
;
2050 ehea_mcl_entry
= kzalloc(sizeof(*ehea_mcl_entry
), GFP_ATOMIC
);
2051 if (!ehea_mcl_entry
) {
2052 ehea_error("no mem for mcl_entry");
2056 INIT_LIST_HEAD(&ehea_mcl_entry
->list
);
2058 memcpy(&ehea_mcl_entry
->macaddr
, mc_mac_addr
, ETH_ALEN
);
2060 hret
= ehea_multicast_reg_helper(port
, ehea_mcl_entry
->macaddr
,
2063 list_add(&ehea_mcl_entry
->list
, &port
->mc_list
->list
);
2065 ehea_error("failed registering mcast MAC");
2066 kfree(ehea_mcl_entry
);
2070 static void ehea_set_multicast_list(struct net_device
*dev
)
2072 struct ehea_port
*port
= netdev_priv(dev
);
2073 struct netdev_hw_addr
*ha
;
2076 if (dev
->flags
& IFF_PROMISC
) {
2077 ehea_promiscuous(dev
, 1);
2080 ehea_promiscuous(dev
, 0);
2082 if (dev
->flags
& IFF_ALLMULTI
) {
2083 ehea_allmulti(dev
, 1);
2086 ehea_allmulti(dev
, 0);
2088 if (!netdev_mc_empty(dev
)) {
2089 ret
= ehea_drop_multicast_list(dev
);
2091 /* Dropping the current multicast list failed.
2092 * Enabling ALL_MULTI is the best we can do.
2094 ehea_allmulti(dev
, 1);
2097 if (netdev_mc_count(dev
) > port
->adapter
->max_mc_mac
) {
2098 ehea_info("Mcast registration limit reached (0x%llx). "
2100 port
->adapter
->max_mc_mac
);
2104 netdev_for_each_mc_addr(ha
, dev
)
2105 ehea_add_multicast_entry(port
, ha
->addr
);
2109 ehea_update_bcmc_registrations();
2112 static int ehea_change_mtu(struct net_device
*dev
, int new_mtu
)
2114 if ((new_mtu
< 68) || (new_mtu
> EHEA_MAX_PACKET_SIZE
))
2120 static void ehea_xmit2(struct sk_buff
*skb
, struct net_device
*dev
,
2121 struct ehea_swqe
*swqe
, u32 lkey
)
2123 if (skb
->protocol
== htons(ETH_P_IP
)) {
2124 const struct iphdr
*iph
= ip_hdr(skb
);
2127 swqe
->tx_control
|= EHEA_SWQE_CRC
2128 | EHEA_SWQE_IP_CHECKSUM
2129 | EHEA_SWQE_TCP_CHECKSUM
2130 | EHEA_SWQE_IMM_DATA_PRESENT
2131 | EHEA_SWQE_DESCRIPTORS_PRESENT
;
2133 write_ip_start_end(swqe
, skb
);
2135 if (iph
->protocol
== IPPROTO_UDP
) {
2136 if ((iph
->frag_off
& IP_MF
) ||
2137 (iph
->frag_off
& IP_OFFSET
))
2138 /* IP fragment, so don't change cs */
2139 swqe
->tx_control
&= ~EHEA_SWQE_TCP_CHECKSUM
;
2141 write_udp_offset_end(swqe
, skb
);
2142 } else if (iph
->protocol
== IPPROTO_TCP
) {
2143 write_tcp_offset_end(swqe
, skb
);
2146 /* icmp (big data) and ip segmentation packets (all other ip
2147 packets) do not require any special handling */
2150 /* Other Ethernet Protocol */
2151 swqe
->tx_control
|= EHEA_SWQE_CRC
2152 | EHEA_SWQE_IMM_DATA_PRESENT
2153 | EHEA_SWQE_DESCRIPTORS_PRESENT
;
2156 write_swqe2_data(skb
, dev
, swqe
, lkey
);
2159 static void ehea_xmit3(struct sk_buff
*skb
, struct net_device
*dev
,
2160 struct ehea_swqe
*swqe
)
2162 int nfrags
= skb_shinfo(skb
)->nr_frags
;
2163 u8
*imm_data
= &swqe
->u
.immdata_nodesc
.immediate_data
[0];
2167 if (skb
->protocol
== htons(ETH_P_IP
)) {
2168 const struct iphdr
*iph
= ip_hdr(skb
);
2171 write_ip_start_end(swqe
, skb
);
2173 if (iph
->protocol
== IPPROTO_TCP
) {
2174 swqe
->tx_control
|= EHEA_SWQE_CRC
2175 | EHEA_SWQE_IP_CHECKSUM
2176 | EHEA_SWQE_TCP_CHECKSUM
2177 | EHEA_SWQE_IMM_DATA_PRESENT
;
2179 write_tcp_offset_end(swqe
, skb
);
2181 } else if (iph
->protocol
== IPPROTO_UDP
) {
2182 if ((iph
->frag_off
& IP_MF
) ||
2183 (iph
->frag_off
& IP_OFFSET
))
2184 /* IP fragment, so don't change cs */
2185 swqe
->tx_control
|= EHEA_SWQE_CRC
2186 | EHEA_SWQE_IMM_DATA_PRESENT
;
2188 swqe
->tx_control
|= EHEA_SWQE_CRC
2189 | EHEA_SWQE_IP_CHECKSUM
2190 | EHEA_SWQE_TCP_CHECKSUM
2191 | EHEA_SWQE_IMM_DATA_PRESENT
;
2193 write_udp_offset_end(swqe
, skb
);
2196 /* icmp (big data) and
2197 ip segmentation packets (all other ip packets) */
2198 swqe
->tx_control
|= EHEA_SWQE_CRC
2199 | EHEA_SWQE_IP_CHECKSUM
2200 | EHEA_SWQE_IMM_DATA_PRESENT
;
2203 /* Other Ethernet Protocol */
2204 swqe
->tx_control
|= EHEA_SWQE_CRC
| EHEA_SWQE_IMM_DATA_PRESENT
;
2206 /* copy (immediate) data */
2208 /* data is in a single piece */
2209 skb_copy_from_linear_data(skb
, imm_data
, skb
->len
);
2211 /* first copy data from the skb->data buffer ... */
2212 skb_copy_from_linear_data(skb
, imm_data
,
2214 imm_data
+= skb_headlen(skb
);
2216 /* ... then copy data from the fragments */
2217 for (i
= 0; i
< nfrags
; i
++) {
2218 frag
= &skb_shinfo(skb
)->frags
[i
];
2220 page_address(frag
->page
) + frag
->page_offset
,
2222 imm_data
+= frag
->size
;
2225 swqe
->immediate_data_length
= skb
->len
;
2229 static inline int ehea_hash_skb(struct sk_buff
*skb
, int num_qps
)
2234 if ((skb
->protocol
== htons(ETH_P_IP
)) &&
2235 (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)) {
2236 tcp
= (struct tcphdr
*)(skb_network_header(skb
) +
2237 (ip_hdr(skb
)->ihl
* 4));
2238 tmp
= (tcp
->source
+ (tcp
->dest
<< 16)) % 31;
2239 tmp
+= ip_hdr(skb
)->daddr
% 31;
2240 return tmp
% num_qps
;
2245 static int ehea_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
2247 struct ehea_port
*port
= netdev_priv(dev
);
2248 struct ehea_swqe
*swqe
;
2249 unsigned long flags
;
2252 struct ehea_port_res
*pr
;
2254 pr
= &port
->port_res
[ehea_hash_skb(skb
, port
->num_tx_qps
)];
2256 if (!spin_trylock(&pr
->xmit_lock
))
2257 return NETDEV_TX_BUSY
;
2259 if (pr
->queue_stopped
) {
2260 spin_unlock(&pr
->xmit_lock
);
2261 return NETDEV_TX_BUSY
;
2264 swqe
= ehea_get_swqe(pr
->qp
, &swqe_index
);
2265 memset(swqe
, 0, SWQE_HEADER_SIZE
);
2266 atomic_dec(&pr
->swqe_avail
);
2268 if (vlan_tx_tag_present(skb
)) {
2269 swqe
->tx_control
|= EHEA_SWQE_VLAN_INSERT
;
2270 swqe
->vlan_tag
= vlan_tx_tag_get(skb
);
2274 pr
->tx_bytes
+= skb
->len
;
2276 if (skb
->len
<= SWQE3_MAX_IMM
) {
2277 u32 sig_iv
= port
->sig_comp_iv
;
2278 u32 swqe_num
= pr
->swqe_id_counter
;
2279 ehea_xmit3(skb
, dev
, swqe
);
2280 swqe
->wr_id
= EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, EHEA_SWQE3_TYPE
)
2281 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT
, swqe_num
);
2282 if (pr
->swqe_ll_count
>= (sig_iv
- 1)) {
2283 swqe
->wr_id
|= EHEA_BMASK_SET(EHEA_WR_ID_REFILL
,
2285 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
2286 pr
->swqe_ll_count
= 0;
2288 pr
->swqe_ll_count
+= 1;
2291 EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, EHEA_SWQE2_TYPE
)
2292 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT
, pr
->swqe_id_counter
)
2293 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL
, 1)
2294 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX
, pr
->sq_skba
.index
);
2295 pr
->sq_skba
.arr
[pr
->sq_skba
.index
] = skb
;
2297 pr
->sq_skba
.index
++;
2298 pr
->sq_skba
.index
&= (pr
->sq_skba
.len
- 1);
2300 lkey
= pr
->send_mr
.lkey
;
2301 ehea_xmit2(skb
, dev
, swqe
, lkey
);
2302 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
2304 pr
->swqe_id_counter
+= 1;
2306 if (netif_msg_tx_queued(port
)) {
2307 ehea_info("post swqe on QP %d", pr
->qp
->init_attr
.qp_nr
);
2308 ehea_dump(swqe
, 512, "swqe");
2311 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))) {
2312 netif_stop_queue(dev
);
2313 swqe
->tx_control
|= EHEA_SWQE_PURGE
;
2316 ehea_post_swqe(pr
->qp
, swqe
);
2318 if (unlikely(atomic_read(&pr
->swqe_avail
) <= 1)) {
2319 spin_lock_irqsave(&pr
->netif_queue
, flags
);
2320 if (unlikely(atomic_read(&pr
->swqe_avail
) <= 1)) {
2321 pr
->p_stats
.queue_stopped
++;
2322 netif_stop_queue(dev
);
2323 pr
->queue_stopped
= 1;
2325 spin_unlock_irqrestore(&pr
->netif_queue
, flags
);
2327 dev
->trans_start
= jiffies
; /* NETIF_F_LLTX driver :( */
2328 spin_unlock(&pr
->xmit_lock
);
2330 return NETDEV_TX_OK
;
2333 static void ehea_vlan_rx_register(struct net_device
*dev
,
2334 struct vlan_group
*grp
)
2336 struct ehea_port
*port
= netdev_priv(dev
);
2337 struct ehea_adapter
*adapter
= port
->adapter
;
2338 struct hcp_ehea_port_cb1
*cb1
;
2343 cb1
= (void *)get_zeroed_page(GFP_KERNEL
);
2345 ehea_error("no mem for cb1");
2349 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
2350 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2351 if (hret
!= H_SUCCESS
)
2352 ehea_error("modify_ehea_port failed");
2354 free_page((unsigned long)cb1
);
2359 static void ehea_vlan_rx_add_vid(struct net_device
*dev
, unsigned short vid
)
2361 struct ehea_port
*port
= netdev_priv(dev
);
2362 struct ehea_adapter
*adapter
= port
->adapter
;
2363 struct hcp_ehea_port_cb1
*cb1
;
2367 cb1
= (void *)get_zeroed_page(GFP_KERNEL
);
2369 ehea_error("no mem for cb1");
2373 hret
= ehea_h_query_ehea_port(adapter
->handle
, port
->logical_port_id
,
2374 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2375 if (hret
!= H_SUCCESS
) {
2376 ehea_error("query_ehea_port failed");
2381 cb1
->vlan_filter
[index
] |= ((u64
)(0x8000000000000000 >> (vid
& 0x3F)));
2383 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
2384 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2385 if (hret
!= H_SUCCESS
)
2386 ehea_error("modify_ehea_port failed");
2388 free_page((unsigned long)cb1
);
2392 static void ehea_vlan_rx_kill_vid(struct net_device
*dev
, unsigned short vid
)
2394 struct ehea_port
*port
= netdev_priv(dev
);
2395 struct ehea_adapter
*adapter
= port
->adapter
;
2396 struct hcp_ehea_port_cb1
*cb1
;
2400 vlan_group_set_device(port
->vgrp
, vid
, NULL
);
2402 cb1
= (void *)get_zeroed_page(GFP_KERNEL
);
2404 ehea_error("no mem for cb1");
2408 hret
= ehea_h_query_ehea_port(adapter
->handle
, port
->logical_port_id
,
2409 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2410 if (hret
!= H_SUCCESS
) {
2411 ehea_error("query_ehea_port failed");
2416 cb1
->vlan_filter
[index
] &= ~((u64
)(0x8000000000000000 >> (vid
& 0x3F)));
2418 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
2419 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2420 if (hret
!= H_SUCCESS
)
2421 ehea_error("modify_ehea_port failed");
2423 free_page((unsigned long)cb1
);
2426 int ehea_activate_qp(struct ehea_adapter
*adapter
, struct ehea_qp
*qp
)
2432 struct hcp_modify_qp_cb0
*cb0
;
2434 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
2440 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2441 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2442 if (hret
!= H_SUCCESS
) {
2443 ehea_error("query_ehea_qp failed (1)");
2447 cb0
->qp_ctl_reg
= H_QP_CR_STATE_INITIALIZED
;
2448 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2449 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2450 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2451 if (hret
!= H_SUCCESS
) {
2452 ehea_error("modify_ehea_qp failed (1)");
2456 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2457 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2458 if (hret
!= H_SUCCESS
) {
2459 ehea_error("query_ehea_qp failed (2)");
2463 cb0
->qp_ctl_reg
= H_QP_CR_ENABLED
| H_QP_CR_STATE_INITIALIZED
;
2464 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2465 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2466 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2467 if (hret
!= H_SUCCESS
) {
2468 ehea_error("modify_ehea_qp failed (2)");
2472 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2473 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2474 if (hret
!= H_SUCCESS
) {
2475 ehea_error("query_ehea_qp failed (3)");
2479 cb0
->qp_ctl_reg
= H_QP_CR_ENABLED
| H_QP_CR_STATE_RDY2SND
;
2480 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2481 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2482 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2483 if (hret
!= H_SUCCESS
) {
2484 ehea_error("modify_ehea_qp failed (3)");
2488 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2489 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2490 if (hret
!= H_SUCCESS
) {
2491 ehea_error("query_ehea_qp failed (4)");
2497 free_page((unsigned long)cb0
);
2501 static int ehea_port_res_setup(struct ehea_port
*port
, int def_qps
,
2505 struct port_res_cfg pr_cfg
, pr_cfg_small_rx
;
2506 enum ehea_eq_type eq_type
= EHEA_EQ
;
2508 port
->qp_eq
= ehea_create_eq(port
->adapter
, eq_type
,
2509 EHEA_MAX_ENTRIES_EQ
, 1);
2512 ehea_error("ehea_create_eq failed (qp_eq)");
2516 pr_cfg
.max_entries_rcq
= rq1_entries
+ rq2_entries
+ rq3_entries
;
2517 pr_cfg
.max_entries_scq
= sq_entries
* 2;
2518 pr_cfg
.max_entries_sq
= sq_entries
;
2519 pr_cfg
.max_entries_rq1
= rq1_entries
;
2520 pr_cfg
.max_entries_rq2
= rq2_entries
;
2521 pr_cfg
.max_entries_rq3
= rq3_entries
;
2523 pr_cfg_small_rx
.max_entries_rcq
= 1;
2524 pr_cfg_small_rx
.max_entries_scq
= sq_entries
;
2525 pr_cfg_small_rx
.max_entries_sq
= sq_entries
;
2526 pr_cfg_small_rx
.max_entries_rq1
= 1;
2527 pr_cfg_small_rx
.max_entries_rq2
= 1;
2528 pr_cfg_small_rx
.max_entries_rq3
= 1;
2530 for (i
= 0; i
< def_qps
; i
++) {
2531 ret
= ehea_init_port_res(port
, &port
->port_res
[i
], &pr_cfg
, i
);
2535 for (i
= def_qps
; i
< def_qps
+ add_tx_qps
; i
++) {
2536 ret
= ehea_init_port_res(port
, &port
->port_res
[i
],
2537 &pr_cfg_small_rx
, i
);
2546 ehea_clean_portres(port
, &port
->port_res
[i
]);
2549 ehea_destroy_eq(port
->qp_eq
);
2553 static int ehea_clean_all_portres(struct ehea_port
*port
)
2558 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++)
2559 ret
|= ehea_clean_portres(port
, &port
->port_res
[i
]);
2561 ret
|= ehea_destroy_eq(port
->qp_eq
);
2566 static void ehea_remove_adapter_mr(struct ehea_adapter
*adapter
)
2568 if (adapter
->active_ports
)
2571 ehea_rem_mr(&adapter
->mr
);
2574 static int ehea_add_adapter_mr(struct ehea_adapter
*adapter
)
2576 if (adapter
->active_ports
)
2579 return ehea_reg_kernel_mr(adapter
, &adapter
->mr
);
2582 static int ehea_up(struct net_device
*dev
)
2585 struct ehea_port
*port
= netdev_priv(dev
);
2587 if (port
->state
== EHEA_PORT_UP
)
2590 ret
= ehea_port_res_setup(port
, port
->num_def_qps
,
2591 port
->num_add_tx_qps
);
2593 ehea_error("port_res_failed");
2597 /* Set default QP for this port */
2598 ret
= ehea_configure_port(port
);
2600 ehea_error("ehea_configure_port failed. ret:%d", ret
);
2604 ret
= ehea_reg_interrupts(dev
);
2606 ehea_error("reg_interrupts failed. ret:%d", ret
);
2610 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
2611 ret
= ehea_activate_qp(port
->adapter
, port
->port_res
[i
].qp
);
2613 ehea_error("activate_qp failed");
2618 for (i
= 0; i
< port
->num_def_qps
; i
++) {
2619 ret
= ehea_fill_port_res(&port
->port_res
[i
]);
2621 ehea_error("out_free_irqs");
2626 ret
= ehea_broadcast_reg_helper(port
, H_REG_BCMC
);
2632 port
->state
= EHEA_PORT_UP
;
2638 ehea_free_interrupts(dev
);
2641 ehea_clean_all_portres(port
);
2644 ehea_info("Failed starting %s. ret=%i", dev
->name
, ret
);
2646 ehea_update_bcmc_registrations();
2647 ehea_update_firmware_handles();
2652 static void port_napi_disable(struct ehea_port
*port
)
2656 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++)
2657 napi_disable(&port
->port_res
[i
].napi
);
2660 static void port_napi_enable(struct ehea_port
*port
)
2664 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++)
2665 napi_enable(&port
->port_res
[i
].napi
);
2668 static int ehea_open(struct net_device
*dev
)
2671 struct ehea_port
*port
= netdev_priv(dev
);
2673 mutex_lock(&port
->port_lock
);
2675 if (netif_msg_ifup(port
))
2676 ehea_info("enabling port %s", dev
->name
);
2680 port_napi_enable(port
);
2681 netif_start_queue(dev
);
2684 init_waitqueue_head(&port
->swqe_avail_wq
);
2685 init_waitqueue_head(&port
->restart_wq
);
2687 mutex_unlock(&port
->port_lock
);
2692 static int ehea_down(struct net_device
*dev
)
2695 struct ehea_port
*port
= netdev_priv(dev
);
2697 if (port
->state
== EHEA_PORT_DOWN
)
2700 ehea_drop_multicast_list(dev
);
2701 ehea_broadcast_reg_helper(port
, H_DEREG_BCMC
);
2703 ehea_free_interrupts(dev
);
2705 port
->state
= EHEA_PORT_DOWN
;
2707 ehea_update_bcmc_registrations();
2709 ret
= ehea_clean_all_portres(port
);
2711 ehea_info("Failed freeing resources for %s. ret=%i",
2714 ehea_update_firmware_handles();
2719 static int ehea_stop(struct net_device
*dev
)
2722 struct ehea_port
*port
= netdev_priv(dev
);
2724 if (netif_msg_ifdown(port
))
2725 ehea_info("disabling port %s", dev
->name
);
2727 set_bit(__EHEA_DISABLE_PORT_RESET
, &port
->flags
);
2728 cancel_work_sync(&port
->reset_task
);
2729 mutex_lock(&port
->port_lock
);
2730 netif_stop_queue(dev
);
2731 port_napi_disable(port
);
2732 ret
= ehea_down(dev
);
2733 mutex_unlock(&port
->port_lock
);
2734 clear_bit(__EHEA_DISABLE_PORT_RESET
, &port
->flags
);
2738 static void ehea_purge_sq(struct ehea_qp
*orig_qp
)
2740 struct ehea_qp qp
= *orig_qp
;
2741 struct ehea_qp_init_attr
*init_attr
= &qp
.init_attr
;
2742 struct ehea_swqe
*swqe
;
2746 for (i
= 0; i
< init_attr
->act_nr_send_wqes
; i
++) {
2747 swqe
= ehea_get_swqe(&qp
, &wqe_index
);
2748 swqe
->tx_control
|= EHEA_SWQE_PURGE
;
2752 static void ehea_flush_sq(struct ehea_port
*port
)
2756 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
2757 struct ehea_port_res
*pr
= &port
->port_res
[i
];
2758 int swqe_max
= pr
->sq_skba_size
- 2 - pr
->swqe_ll_count
;
2761 ret
= wait_event_timeout(port
->swqe_avail_wq
,
2762 atomic_read(&pr
->swqe_avail
) >= swqe_max
,
2763 msecs_to_jiffies(100));
2766 ehea_error("WARNING: sq not flushed completely");
2772 int ehea_stop_qps(struct net_device
*dev
)
2774 struct ehea_port
*port
= netdev_priv(dev
);
2775 struct ehea_adapter
*adapter
= port
->adapter
;
2776 struct hcp_modify_qp_cb0
*cb0
;
2784 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
2790 for (i
= 0; i
< (port
->num_def_qps
+ port
->num_add_tx_qps
); i
++) {
2791 struct ehea_port_res
*pr
= &port
->port_res
[i
];
2792 struct ehea_qp
*qp
= pr
->qp
;
2794 /* Purge send queue */
2797 /* Disable queue pair */
2798 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2799 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2801 if (hret
!= H_SUCCESS
) {
2802 ehea_error("query_ehea_qp failed (1)");
2806 cb0
->qp_ctl_reg
= (cb0
->qp_ctl_reg
& H_QP_CR_RES_STATE
) << 8;
2807 cb0
->qp_ctl_reg
&= ~H_QP_CR_ENABLED
;
2809 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2810 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
,
2812 &dummy64
, &dummy16
, &dummy16
);
2813 if (hret
!= H_SUCCESS
) {
2814 ehea_error("modify_ehea_qp failed (1)");
2818 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2819 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2821 if (hret
!= H_SUCCESS
) {
2822 ehea_error("query_ehea_qp failed (2)");
2826 /* deregister shared memory regions */
2827 dret
= ehea_rem_smrs(pr
);
2829 ehea_error("unreg shared memory region failed");
2836 free_page((unsigned long)cb0
);
2841 void ehea_update_rqs(struct ehea_qp
*orig_qp
, struct ehea_port_res
*pr
)
2843 struct ehea_qp qp
= *orig_qp
;
2844 struct ehea_qp_init_attr
*init_attr
= &qp
.init_attr
;
2845 struct ehea_rwqe
*rwqe
;
2846 struct sk_buff
**skba_rq2
= pr
->rq2_skba
.arr
;
2847 struct sk_buff
**skba_rq3
= pr
->rq3_skba
.arr
;
2848 struct sk_buff
*skb
;
2849 u32 lkey
= pr
->recv_mr
.lkey
;
2855 for (i
= 0; i
< init_attr
->act_nr_rwqes_rq2
+ 1; i
++) {
2856 rwqe
= ehea_get_next_rwqe(&qp
, 2);
2857 rwqe
->sg_list
[0].l_key
= lkey
;
2858 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, rwqe
->wr_id
);
2859 skb
= skba_rq2
[index
];
2861 rwqe
->sg_list
[0].vaddr
= ehea_map_vaddr(skb
->data
);
2864 for (i
= 0; i
< init_attr
->act_nr_rwqes_rq3
+ 1; i
++) {
2865 rwqe
= ehea_get_next_rwqe(&qp
, 3);
2866 rwqe
->sg_list
[0].l_key
= lkey
;
2867 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, rwqe
->wr_id
);
2868 skb
= skba_rq3
[index
];
2870 rwqe
->sg_list
[0].vaddr
= ehea_map_vaddr(skb
->data
);
2874 int ehea_restart_qps(struct net_device
*dev
)
2876 struct ehea_port
*port
= netdev_priv(dev
);
2877 struct ehea_adapter
*adapter
= port
->adapter
;
2881 struct hcp_modify_qp_cb0
*cb0
;
2886 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
2892 for (i
= 0; i
< (port
->num_def_qps
+ port
->num_add_tx_qps
); i
++) {
2893 struct ehea_port_res
*pr
= &port
->port_res
[i
];
2894 struct ehea_qp
*qp
= pr
->qp
;
2896 ret
= ehea_gen_smrs(pr
);
2898 ehea_error("creation of shared memory regions failed");
2902 ehea_update_rqs(qp
, pr
);
2904 /* Enable queue pair */
2905 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2906 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2908 if (hret
!= H_SUCCESS
) {
2909 ehea_error("query_ehea_qp failed (1)");
2913 cb0
->qp_ctl_reg
= (cb0
->qp_ctl_reg
& H_QP_CR_RES_STATE
) << 8;
2914 cb0
->qp_ctl_reg
|= H_QP_CR_ENABLED
;
2916 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2917 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
,
2919 &dummy64
, &dummy16
, &dummy16
);
2920 if (hret
!= H_SUCCESS
) {
2921 ehea_error("modify_ehea_qp failed (1)");
2925 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2926 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2928 if (hret
!= H_SUCCESS
) {
2929 ehea_error("query_ehea_qp failed (2)");
2933 /* refill entire queue */
2934 ehea_refill_rq1(pr
, pr
->rq1_skba
.index
, 0);
2935 ehea_refill_rq2(pr
, 0);
2936 ehea_refill_rq3(pr
, 0);
2939 free_page((unsigned long)cb0
);
2944 static void ehea_reset_port(struct work_struct
*work
)
2947 struct ehea_port
*port
=
2948 container_of(work
, struct ehea_port
, reset_task
);
2949 struct net_device
*dev
= port
->netdev
;
2951 mutex_lock(&dlpar_mem_lock
);
2953 mutex_lock(&port
->port_lock
);
2954 netif_stop_queue(dev
);
2956 port_napi_disable(port
);
2964 ehea_set_multicast_list(dev
);
2966 if (netif_msg_timer(port
))
2967 ehea_info("Device %s resetted successfully", dev
->name
);
2969 port_napi_enable(port
);
2971 netif_wake_queue(dev
);
2973 mutex_unlock(&port
->port_lock
);
2974 mutex_unlock(&dlpar_mem_lock
);
2977 static void ehea_rereg_mrs(struct work_struct
*work
)
2980 struct ehea_adapter
*adapter
;
2982 ehea_info("LPAR memory changed - re-initializing driver");
2984 list_for_each_entry(adapter
, &adapter_list
, list
)
2985 if (adapter
->active_ports
) {
2986 /* Shutdown all ports */
2987 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++) {
2988 struct ehea_port
*port
= adapter
->port
[i
];
2989 struct net_device
*dev
;
2996 if (dev
->flags
& IFF_UP
) {
2997 mutex_lock(&port
->port_lock
);
2998 netif_stop_queue(dev
);
2999 ehea_flush_sq(port
);
3000 ret
= ehea_stop_qps(dev
);
3002 mutex_unlock(&port
->port_lock
);
3005 port_napi_disable(port
);
3006 mutex_unlock(&port
->port_lock
);
3008 reset_sq_restart_flag(port
);
3011 /* Unregister old memory region */
3012 ret
= ehea_rem_mr(&adapter
->mr
);
3014 ehea_error("unregister MR failed - driver"
3020 clear_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
);
3022 list_for_each_entry(adapter
, &adapter_list
, list
)
3023 if (adapter
->active_ports
) {
3024 /* Register new memory region */
3025 ret
= ehea_reg_kernel_mr(adapter
, &adapter
->mr
);
3027 ehea_error("register MR failed - driver"
3032 /* Restart all ports */
3033 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++) {
3034 struct ehea_port
*port
= adapter
->port
[i
];
3037 struct net_device
*dev
= port
->netdev
;
3039 if (dev
->flags
& IFF_UP
) {
3040 mutex_lock(&port
->port_lock
);
3041 port_napi_enable(port
);
3042 ret
= ehea_restart_qps(dev
);
3045 netif_wake_queue(dev
);
3046 mutex_unlock(&port
->port_lock
);
3051 ehea_info("re-initializing driver complete");
3056 static void ehea_tx_watchdog(struct net_device
*dev
)
3058 struct ehea_port
*port
= netdev_priv(dev
);
3060 if (netif_carrier_ok(dev
) &&
3061 !test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))
3062 ehea_schedule_port_reset(port
);
3065 int ehea_sense_adapter_attr(struct ehea_adapter
*adapter
)
3067 struct hcp_query_ehea
*cb
;
3071 cb
= (void *)get_zeroed_page(GFP_KERNEL
);
3077 hret
= ehea_h_query_ehea(adapter
->handle
, cb
);
3079 if (hret
!= H_SUCCESS
) {
3084 adapter
->max_mc_mac
= cb
->max_mc_mac
- 1;
3088 free_page((unsigned long)cb
);
3093 int ehea_get_jumboframe_status(struct ehea_port
*port
, int *jumbo
)
3095 struct hcp_ehea_port_cb4
*cb4
;
3101 /* (Try to) enable *jumbo frames */
3102 cb4
= (void *)get_zeroed_page(GFP_KERNEL
);
3104 ehea_error("no mem for cb4");
3108 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
3109 port
->logical_port_id
,
3111 H_PORT_CB4_JUMBO
, cb4
);
3112 if (hret
== H_SUCCESS
) {
3113 if (cb4
->jumbo_frame
)
3116 cb4
->jumbo_frame
= 1;
3117 hret
= ehea_h_modify_ehea_port(port
->adapter
->
3124 if (hret
== H_SUCCESS
)
3130 free_page((unsigned long)cb4
);
3136 static ssize_t
ehea_show_port_id(struct device
*dev
,
3137 struct device_attribute
*attr
, char *buf
)
3139 struct ehea_port
*port
= container_of(dev
, struct ehea_port
, ofdev
.dev
);
3140 return sprintf(buf
, "%d", port
->logical_port_id
);
3143 static DEVICE_ATTR(log_port_id
, S_IRUSR
| S_IRGRP
| S_IROTH
, ehea_show_port_id
,
3146 static void __devinit
logical_port_release(struct device
*dev
)
3148 struct ehea_port
*port
= container_of(dev
, struct ehea_port
, ofdev
.dev
);
3149 of_node_put(port
->ofdev
.dev
.of_node
);
3152 static struct device
*ehea_register_port(struct ehea_port
*port
,
3153 struct device_node
*dn
)
3157 port
->ofdev
.dev
.of_node
= of_node_get(dn
);
3158 port
->ofdev
.dev
.parent
= &port
->adapter
->ofdev
->dev
;
3159 port
->ofdev
.dev
.bus
= &ibmebus_bus_type
;
3161 dev_set_name(&port
->ofdev
.dev
, "port%d", port_name_cnt
++);
3162 port
->ofdev
.dev
.release
= logical_port_release
;
3164 ret
= of_device_register(&port
->ofdev
);
3166 ehea_error("failed to register device. ret=%d", ret
);
3170 ret
= device_create_file(&port
->ofdev
.dev
, &dev_attr_log_port_id
);
3172 ehea_error("failed to register attributes, ret=%d", ret
);
3173 goto out_unreg_of_dev
;
3176 return &port
->ofdev
.dev
;
3179 of_device_unregister(&port
->ofdev
);
3184 static void ehea_unregister_port(struct ehea_port
*port
)
3186 device_remove_file(&port
->ofdev
.dev
, &dev_attr_log_port_id
);
3187 of_device_unregister(&port
->ofdev
);
3190 static const struct net_device_ops ehea_netdev_ops
= {
3191 .ndo_open
= ehea_open
,
3192 .ndo_stop
= ehea_stop
,
3193 .ndo_start_xmit
= ehea_start_xmit
,
3194 #ifdef CONFIG_NET_POLL_CONTROLLER
3195 .ndo_poll_controller
= ehea_netpoll
,
3197 .ndo_get_stats
= ehea_get_stats
,
3198 .ndo_set_mac_address
= ehea_set_mac_addr
,
3199 .ndo_validate_addr
= eth_validate_addr
,
3200 .ndo_set_multicast_list
= ehea_set_multicast_list
,
3201 .ndo_change_mtu
= ehea_change_mtu
,
3202 .ndo_vlan_rx_register
= ehea_vlan_rx_register
,
3203 .ndo_vlan_rx_add_vid
= ehea_vlan_rx_add_vid
,
3204 .ndo_vlan_rx_kill_vid
= ehea_vlan_rx_kill_vid
,
3205 .ndo_tx_timeout
= ehea_tx_watchdog
,
3208 struct ehea_port
*ehea_setup_single_port(struct ehea_adapter
*adapter
,
3209 u32 logical_port_id
,
3210 struct device_node
*dn
)
3213 struct net_device
*dev
;
3214 struct ehea_port
*port
;
3215 struct device
*port_dev
;
3218 /* allocate memory for the port structures */
3219 dev
= alloc_etherdev(sizeof(struct ehea_port
));
3222 ehea_error("no mem for net_device");
3227 port
= netdev_priv(dev
);
3229 mutex_init(&port
->port_lock
);
3230 port
->state
= EHEA_PORT_DOWN
;
3231 port
->sig_comp_iv
= sq_entries
/ 10;
3233 port
->adapter
= adapter
;
3235 port
->logical_port_id
= logical_port_id
;
3237 port
->msg_enable
= netif_msg_init(msg_level
, EHEA_MSG_DEFAULT
);
3239 port
->mc_list
= kzalloc(sizeof(struct ehea_mc_list
), GFP_KERNEL
);
3240 if (!port
->mc_list
) {
3242 goto out_free_ethdev
;
3245 INIT_LIST_HEAD(&port
->mc_list
->list
);
3247 ret
= ehea_sense_port_attr(port
);
3249 goto out_free_mc_list
;
3251 port_dev
= ehea_register_port(port
, dn
);
3253 goto out_free_mc_list
;
3255 SET_NETDEV_DEV(dev
, port_dev
);
3257 /* initialize net_device structure */
3258 memcpy(dev
->dev_addr
, &port
->mac_addr
, ETH_ALEN
);
3260 dev
->netdev_ops
= &ehea_netdev_ops
;
3261 ehea_set_ethtool_ops(dev
);
3263 dev
->features
= NETIF_F_SG
| NETIF_F_FRAGLIST
| NETIF_F_TSO
3264 | NETIF_F_HIGHDMA
| NETIF_F_IP_CSUM
| NETIF_F_HW_VLAN_TX
3265 | NETIF_F_HW_VLAN_RX
| NETIF_F_HW_VLAN_FILTER
3267 dev
->watchdog_timeo
= EHEA_WATCH_DOG_TIMEOUT
;
3269 INIT_WORK(&port
->reset_task
, ehea_reset_port
);
3271 ret
= register_netdev(dev
);
3273 ehea_error("register_netdev failed. ret=%d", ret
);
3274 goto out_unreg_port
;
3277 port
->lro_max_aggr
= lro_max_aggr
;
3279 ret
= ehea_get_jumboframe_status(port
, &jumbo
);
3281 ehea_error("failed determining jumbo frame status for %s",
3282 port
->netdev
->name
);
3284 ehea_info("%s: Jumbo frames are %sabled", dev
->name
,
3285 jumbo
== 1 ? "en" : "dis");
3287 adapter
->active_ports
++;
3292 ehea_unregister_port(port
);
3295 kfree(port
->mc_list
);
3301 ehea_error("setting up logical port with id=%d failed, ret=%d",
3302 logical_port_id
, ret
);
3306 static void ehea_shutdown_single_port(struct ehea_port
*port
)
3308 struct ehea_adapter
*adapter
= port
->adapter
;
3309 unregister_netdev(port
->netdev
);
3310 ehea_unregister_port(port
);
3311 kfree(port
->mc_list
);
3312 free_netdev(port
->netdev
);
3313 adapter
->active_ports
--;
3316 static int ehea_setup_ports(struct ehea_adapter
*adapter
)
3318 struct device_node
*lhea_dn
;
3319 struct device_node
*eth_dn
= NULL
;
3321 const u32
*dn_log_port_id
;
3324 lhea_dn
= adapter
->ofdev
->dev
.of_node
;
3325 while ((eth_dn
= of_get_next_child(lhea_dn
, eth_dn
))) {
3327 dn_log_port_id
= of_get_property(eth_dn
, "ibm,hea-port-no",
3329 if (!dn_log_port_id
) {
3330 ehea_error("bad device node: eth_dn name=%s",
3335 if (ehea_add_adapter_mr(adapter
)) {
3336 ehea_error("creating MR failed");
3337 of_node_put(eth_dn
);
3341 adapter
->port
[i
] = ehea_setup_single_port(adapter
,
3344 if (adapter
->port
[i
])
3345 ehea_info("%s -> logical port id #%d",
3346 adapter
->port
[i
]->netdev
->name
,
3349 ehea_remove_adapter_mr(adapter
);
3356 static struct device_node
*ehea_get_eth_dn(struct ehea_adapter
*adapter
,
3357 u32 logical_port_id
)
3359 struct device_node
*lhea_dn
;
3360 struct device_node
*eth_dn
= NULL
;
3361 const u32
*dn_log_port_id
;
3363 lhea_dn
= adapter
->ofdev
->dev
.of_node
;
3364 while ((eth_dn
= of_get_next_child(lhea_dn
, eth_dn
))) {
3366 dn_log_port_id
= of_get_property(eth_dn
, "ibm,hea-port-no",
3369 if (*dn_log_port_id
== logical_port_id
)
3376 static ssize_t
ehea_probe_port(struct device
*dev
,
3377 struct device_attribute
*attr
,
3378 const char *buf
, size_t count
)
3380 struct ehea_adapter
*adapter
= dev_get_drvdata(dev
);
3381 struct ehea_port
*port
;
3382 struct device_node
*eth_dn
= NULL
;
3385 u32 logical_port_id
;
3387 sscanf(buf
, "%d", &logical_port_id
);
3389 port
= ehea_get_port(adapter
, logical_port_id
);
3392 ehea_info("adding port with logical port id=%d failed. port "
3393 "already configured as %s.", logical_port_id
,
3394 port
->netdev
->name
);
3398 eth_dn
= ehea_get_eth_dn(adapter
, logical_port_id
);
3401 ehea_info("no logical port with id %d found", logical_port_id
);
3405 if (ehea_add_adapter_mr(adapter
)) {
3406 ehea_error("creating MR failed");
3410 port
= ehea_setup_single_port(adapter
, logical_port_id
, eth_dn
);
3412 of_node_put(eth_dn
);
3415 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3416 if (!adapter
->port
[i
]) {
3417 adapter
->port
[i
] = port
;
3421 ehea_info("added %s (logical port id=%d)", port
->netdev
->name
,
3424 ehea_remove_adapter_mr(adapter
);
3428 return (ssize_t
) count
;
3431 static ssize_t
ehea_remove_port(struct device
*dev
,
3432 struct device_attribute
*attr
,
3433 const char *buf
, size_t count
)
3435 struct ehea_adapter
*adapter
= dev_get_drvdata(dev
);
3436 struct ehea_port
*port
;
3438 u32 logical_port_id
;
3440 sscanf(buf
, "%d", &logical_port_id
);
3442 port
= ehea_get_port(adapter
, logical_port_id
);
3445 ehea_info("removed %s (logical port id=%d)", port
->netdev
->name
,
3448 ehea_shutdown_single_port(port
);
3450 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3451 if (adapter
->port
[i
] == port
) {
3452 adapter
->port
[i
] = NULL
;
3456 ehea_error("removing port with logical port id=%d failed. port "
3457 "not configured.", logical_port_id
);
3461 ehea_remove_adapter_mr(adapter
);
3463 return (ssize_t
) count
;
3466 static DEVICE_ATTR(probe_port
, S_IWUSR
, NULL
, ehea_probe_port
);
3467 static DEVICE_ATTR(remove_port
, S_IWUSR
, NULL
, ehea_remove_port
);
3469 int ehea_create_device_sysfs(struct platform_device
*dev
)
3471 int ret
= device_create_file(&dev
->dev
, &dev_attr_probe_port
);
3475 ret
= device_create_file(&dev
->dev
, &dev_attr_remove_port
);
3480 void ehea_remove_device_sysfs(struct platform_device
*dev
)
3482 device_remove_file(&dev
->dev
, &dev_attr_probe_port
);
3483 device_remove_file(&dev
->dev
, &dev_attr_remove_port
);
3486 static int __devinit
ehea_probe_adapter(struct platform_device
*dev
,
3487 const struct of_device_id
*id
)
3489 struct ehea_adapter
*adapter
;
3490 const u64
*adapter_handle
;
3493 if (!dev
|| !dev
->dev
.of_node
) {
3494 ehea_error("Invalid ibmebus device probed");
3498 adapter
= kzalloc(sizeof(*adapter
), GFP_KERNEL
);
3501 dev_err(&dev
->dev
, "no mem for ehea_adapter\n");
3505 list_add(&adapter
->list
, &adapter_list
);
3507 adapter
->ofdev
= dev
;
3509 adapter_handle
= of_get_property(dev
->dev
.of_node
, "ibm,hea-handle",
3512 adapter
->handle
= *adapter_handle
;
3514 if (!adapter
->handle
) {
3515 dev_err(&dev
->dev
, "failed getting handle for adapter"
3516 " '%s'\n", dev
->dev
.of_node
->full_name
);
3521 adapter
->pd
= EHEA_PD_ID
;
3523 dev_set_drvdata(&dev
->dev
, adapter
);
3526 /* initialize adapter and ports */
3527 /* get adapter properties */
3528 ret
= ehea_sense_adapter_attr(adapter
);
3530 dev_err(&dev
->dev
, "sense_adapter_attr failed: %d\n", ret
);
3534 adapter
->neq
= ehea_create_eq(adapter
,
3535 EHEA_NEQ
, EHEA_MAX_ENTRIES_EQ
, 1);
3536 if (!adapter
->neq
) {
3538 dev_err(&dev
->dev
, "NEQ creation failed\n");
3542 tasklet_init(&adapter
->neq_tasklet
, ehea_neq_tasklet
,
3543 (unsigned long)adapter
);
3545 ret
= ibmebus_request_irq(adapter
->neq
->attr
.ist1
,
3546 ehea_interrupt_neq
, IRQF_DISABLED
,
3547 "ehea_neq", adapter
);
3549 dev_err(&dev
->dev
, "requesting NEQ IRQ failed\n");
3553 ret
= ehea_create_device_sysfs(dev
);
3557 ret
= ehea_setup_ports(adapter
);
3559 dev_err(&dev
->dev
, "setup_ports failed\n");
3560 goto out_rem_dev_sysfs
;
3567 ehea_remove_device_sysfs(dev
);
3570 ibmebus_free_irq(adapter
->neq
->attr
.ist1
, adapter
);
3573 ehea_destroy_eq(adapter
->neq
);
3576 list_del(&adapter
->list
);
3580 ehea_update_firmware_handles();
3585 static int __devexit
ehea_remove(struct platform_device
*dev
)
3587 struct ehea_adapter
*adapter
= dev_get_drvdata(&dev
->dev
);
3590 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3591 if (adapter
->port
[i
]) {
3592 ehea_shutdown_single_port(adapter
->port
[i
]);
3593 adapter
->port
[i
] = NULL
;
3596 ehea_remove_device_sysfs(dev
);
3598 flush_scheduled_work();
3600 ibmebus_free_irq(adapter
->neq
->attr
.ist1
, adapter
);
3601 tasklet_kill(&adapter
->neq_tasklet
);
3603 ehea_destroy_eq(adapter
->neq
);
3604 ehea_remove_adapter_mr(adapter
);
3605 list_del(&adapter
->list
);
3608 ehea_update_firmware_handles();
3613 void ehea_crash_handler(void)
3617 if (ehea_fw_handles
.arr
)
3618 for (i
= 0; i
< ehea_fw_handles
.num_entries
; i
++)
3619 ehea_h_free_resource(ehea_fw_handles
.arr
[i
].adh
,
3620 ehea_fw_handles
.arr
[i
].fwh
,
3623 if (ehea_bcmc_regs
.arr
)
3624 for (i
= 0; i
< ehea_bcmc_regs
.num_entries
; i
++)
3625 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs
.arr
[i
].adh
,
3626 ehea_bcmc_regs
.arr
[i
].port_id
,
3627 ehea_bcmc_regs
.arr
[i
].reg_type
,
3628 ehea_bcmc_regs
.arr
[i
].macaddr
,
3632 static int ehea_mem_notifier(struct notifier_block
*nb
,
3633 unsigned long action
, void *data
)
3635 int ret
= NOTIFY_BAD
;
3636 struct memory_notify
*arg
= data
;
3638 mutex_lock(&dlpar_mem_lock
);
3641 case MEM_CANCEL_OFFLINE
:
3642 ehea_info("memory offlining canceled");
3643 /* Readd canceled memory block */
3645 ehea_info("memory is going online");
3646 set_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
);
3647 if (ehea_add_sect_bmap(arg
->start_pfn
, arg
->nr_pages
))
3649 ehea_rereg_mrs(NULL
);
3651 case MEM_GOING_OFFLINE
:
3652 ehea_info("memory is going offline");
3653 set_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
);
3654 if (ehea_rem_sect_bmap(arg
->start_pfn
, arg
->nr_pages
))
3656 ehea_rereg_mrs(NULL
);
3662 ehea_update_firmware_handles();
3666 mutex_unlock(&dlpar_mem_lock
);
3670 static struct notifier_block ehea_mem_nb
= {
3671 .notifier_call
= ehea_mem_notifier
,
3674 static int ehea_reboot_notifier(struct notifier_block
*nb
,
3675 unsigned long action
, void *unused
)
3677 if (action
== SYS_RESTART
) {
3678 ehea_info("Reboot: freeing all eHEA resources");
3679 ibmebus_unregister_driver(&ehea_driver
);
3684 static struct notifier_block ehea_reboot_nb
= {
3685 .notifier_call
= ehea_reboot_notifier
,
3688 static int check_module_parm(void)
3692 if ((rq1_entries
< EHEA_MIN_ENTRIES_QP
) ||
3693 (rq1_entries
> EHEA_MAX_ENTRIES_RQ1
)) {
3694 ehea_info("Bad parameter: rq1_entries");
3697 if ((rq2_entries
< EHEA_MIN_ENTRIES_QP
) ||
3698 (rq2_entries
> EHEA_MAX_ENTRIES_RQ2
)) {
3699 ehea_info("Bad parameter: rq2_entries");
3702 if ((rq3_entries
< EHEA_MIN_ENTRIES_QP
) ||
3703 (rq3_entries
> EHEA_MAX_ENTRIES_RQ3
)) {
3704 ehea_info("Bad parameter: rq3_entries");
3707 if ((sq_entries
< EHEA_MIN_ENTRIES_QP
) ||
3708 (sq_entries
> EHEA_MAX_ENTRIES_SQ
)) {
3709 ehea_info("Bad parameter: sq_entries");
3716 static ssize_t
ehea_show_capabilities(struct device_driver
*drv
,
3719 return sprintf(buf
, "%d", EHEA_CAPABILITIES
);
3722 static DRIVER_ATTR(capabilities
, S_IRUSR
| S_IRGRP
| S_IROTH
,
3723 ehea_show_capabilities
, NULL
);
3725 int __init
ehea_module_init(void)
3729 printk(KERN_INFO
"IBM eHEA ethernet device driver (Release %s)\n",
3733 INIT_WORK(&ehea_rereg_mr_task
, ehea_rereg_mrs
);
3734 memset(&ehea_fw_handles
, 0, sizeof(ehea_fw_handles
));
3735 memset(&ehea_bcmc_regs
, 0, sizeof(ehea_bcmc_regs
));
3737 mutex_init(&ehea_fw_handles
.lock
);
3738 spin_lock_init(&ehea_bcmc_regs
.lock
);
3740 ret
= check_module_parm();
3744 ret
= ehea_create_busmap();
3748 ret
= register_reboot_notifier(&ehea_reboot_nb
);
3750 ehea_info("failed registering reboot notifier");
3752 ret
= register_memory_notifier(&ehea_mem_nb
);
3754 ehea_info("failed registering memory remove notifier");
3756 ret
= crash_shutdown_register(ehea_crash_handler
);
3758 ehea_info("failed registering crash handler");
3760 ret
= ibmebus_register_driver(&ehea_driver
);
3762 ehea_error("failed registering eHEA device driver on ebus");
3766 ret
= driver_create_file(&ehea_driver
.driver
,
3767 &driver_attr_capabilities
);
3769 ehea_error("failed to register capabilities attribute, ret=%d",
3777 ibmebus_unregister_driver(&ehea_driver
);
3779 unregister_memory_notifier(&ehea_mem_nb
);
3780 unregister_reboot_notifier(&ehea_reboot_nb
);
3781 crash_shutdown_unregister(ehea_crash_handler
);
3786 static void __exit
ehea_module_exit(void)
3790 flush_scheduled_work();
3791 driver_remove_file(&ehea_driver
.driver
, &driver_attr_capabilities
);
3792 ibmebus_unregister_driver(&ehea_driver
);
3793 unregister_reboot_notifier(&ehea_reboot_nb
);
3794 ret
= crash_shutdown_unregister(ehea_crash_handler
);
3796 ehea_info("failed unregistering crash handler");
3797 unregister_memory_notifier(&ehea_mem_nb
);
3798 kfree(ehea_fw_handles
.arr
);
3799 kfree(ehea_bcmc_regs
.arr
);
3800 ehea_destroy_busmap();
3803 module_init(ehea_module_init
);
3804 module_exit(ehea_module_exit
);