1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /**************************************************************************/
4 /* IBM System i and System p Virtual NIC Device Driver */
5 /* Copyright (C) 2014 IBM Corp. */
6 /* Santiago Leon (santi_leon@yahoo.com) */
7 /* Thomas Falcon (tlfalcon@linux.vnet.ibm.com) */
8 /* John Allen (jallen@linux.vnet.ibm.com) */
11 /* This module contains the implementation of a virtual ethernet device */
12 /* for use with IBM i/p Series LPAR Linux. It utilizes the logical LAN */
13 /* option of the RS/6000 Platform Architecture to interface with virtual */
14 /* ethernet NICs that are presented to the partition by the hypervisor. */
16 /* Messages are passed between the VNIC driver and the VNIC server using */
17 /* Command/Response Queues (CRQs) and sub CRQs (sCRQs). CRQs are used to */
18 /* issue and receive commands that initiate communication with the server */
19 /* on driver initialization. Sub CRQs (sCRQs) are similar to CRQs, but */
20 /* are used by the driver to notify the server that a packet is */
21 /* ready for transmission or that a buffer has been added to receive a */
22 /* packet. Subsequently, sCRQs are used by the server to notify the */
23 /* driver that a packet transmission has been completed or that a packet */
24 /* has been received and placed in a waiting buffer. */
26 /* In lieu of a more conventional "on-the-fly" DMA mapping strategy in */
27 /* which skbs are DMA mapped and immediately unmapped when the transmit */
28 /* or receive has been completed, the VNIC driver is required to use */
29 /* "long term mapping". This entails that large, continuous DMA mapped */
30 /* buffers are allocated on driver initialization and these buffers are */
31 /* then continuously reused to pass skbs to and from the VNIC server. */
33 /**************************************************************************/
35 #include <linux/module.h>
36 #include <linux/moduleparam.h>
37 #include <linux/types.h>
38 #include <linux/errno.h>
39 #include <linux/completion.h>
40 #include <linux/ioport.h>
41 #include <linux/dma-mapping.h>
42 #include <linux/kernel.h>
43 #include <linux/netdevice.h>
44 #include <linux/etherdevice.h>
45 #include <linux/skbuff.h>
46 #include <linux/init.h>
47 #include <linux/delay.h>
49 #include <linux/ethtool.h>
50 #include <linux/proc_fs.h>
51 #include <linux/if_arp.h>
54 #include <linux/ipv6.h>
55 #include <linux/irq.h>
56 #include <linux/kthread.h>
57 #include <linux/seq_file.h>
58 #include <linux/interrupt.h>
59 #include <net/net_namespace.h>
60 #include <asm/hvcall.h>
61 #include <linux/atomic.h>
63 #include <asm/iommu.h>
64 #include <linux/uaccess.h>
65 #include <asm/firmware.h>
66 #include <linux/workqueue.h>
67 #include <linux/if_vlan.h>
68 #include <linux/utsname.h>
72 static const char ibmvnic_driver_name
[] = "ibmvnic";
73 static const char ibmvnic_driver_string
[] = "IBM System i/p Virtual NIC Driver";
75 MODULE_AUTHOR("Santiago Leon");
76 MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver");
77 MODULE_LICENSE("GPL");
78 MODULE_VERSION(IBMVNIC_DRIVER_VERSION
);
80 static int ibmvnic_version
= IBMVNIC_INITIAL_VERSION
;
81 static int ibmvnic_remove(struct vio_dev
*);
82 static void release_sub_crqs(struct ibmvnic_adapter
*, bool);
83 static int ibmvnic_reset_crq(struct ibmvnic_adapter
*);
84 static int ibmvnic_send_crq_init(struct ibmvnic_adapter
*);
85 static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter
*);
86 static int ibmvnic_send_crq(struct ibmvnic_adapter
*, union ibmvnic_crq
*);
87 static int send_subcrq(struct ibmvnic_adapter
*adapter
, u64 remote_handle
,
88 union sub_crq
*sub_crq
);
89 static int send_subcrq_indirect(struct ibmvnic_adapter
*, u64
, u64
, u64
);
90 static irqreturn_t
ibmvnic_interrupt_rx(int irq
, void *instance
);
91 static int enable_scrq_irq(struct ibmvnic_adapter
*,
92 struct ibmvnic_sub_crq_queue
*);
93 static int disable_scrq_irq(struct ibmvnic_adapter
*,
94 struct ibmvnic_sub_crq_queue
*);
95 static int pending_scrq(struct ibmvnic_adapter
*,
96 struct ibmvnic_sub_crq_queue
*);
97 static union sub_crq
*ibmvnic_next_scrq(struct ibmvnic_adapter
*,
98 struct ibmvnic_sub_crq_queue
*);
99 static int ibmvnic_poll(struct napi_struct
*napi
, int data
);
100 static void send_map_query(struct ibmvnic_adapter
*adapter
);
101 static int send_request_map(struct ibmvnic_adapter
*, dma_addr_t
, __be32
, u8
);
102 static int send_request_unmap(struct ibmvnic_adapter
*, u8
);
103 static int send_login(struct ibmvnic_adapter
*adapter
);
104 static void send_cap_queries(struct ibmvnic_adapter
*adapter
);
105 static int init_sub_crqs(struct ibmvnic_adapter
*);
106 static int init_sub_crq_irqs(struct ibmvnic_adapter
*adapter
);
107 static int ibmvnic_init(struct ibmvnic_adapter
*);
108 static int ibmvnic_reset_init(struct ibmvnic_adapter
*);
109 static void release_crq_queue(struct ibmvnic_adapter
*);
110 static int __ibmvnic_set_mac(struct net_device
*, u8
*);
111 static int init_crq_queue(struct ibmvnic_adapter
*adapter
);
112 static int send_query_phys_parms(struct ibmvnic_adapter
*adapter
);
114 struct ibmvnic_stat
{
115 char name
[ETH_GSTRING_LEN
];
119 #define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \
120 offsetof(struct ibmvnic_statistics, stat))
121 #define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off)))
123 static const struct ibmvnic_stat ibmvnic_stats
[] = {
124 {"rx_packets", IBMVNIC_STAT_OFF(rx_packets
)},
125 {"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes
)},
126 {"tx_packets", IBMVNIC_STAT_OFF(tx_packets
)},
127 {"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes
)},
128 {"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets
)},
129 {"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets
)},
130 {"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets
)},
131 {"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets
)},
132 {"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets
)},
133 {"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets
)},
134 {"align_errors", IBMVNIC_STAT_OFF(align_errors
)},
135 {"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors
)},
136 {"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames
)},
137 {"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames
)},
138 {"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors
)},
139 {"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx
)},
140 {"late_collisions", IBMVNIC_STAT_OFF(late_collisions
)},
141 {"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions
)},
142 {"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors
)},
143 {"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense
)},
144 {"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames
)},
145 {"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors
)},
148 static long h_reg_sub_crq(unsigned long unit_address
, unsigned long token
,
149 unsigned long length
, unsigned long *number
,
152 unsigned long retbuf
[PLPAR_HCALL_BUFSIZE
];
155 rc
= plpar_hcall(H_REG_SUB_CRQ
, retbuf
, unit_address
, token
, length
);
163 * ibmvnic_wait_for_completion - Check device state and wait for completion
164 * @adapter: private device data
165 * @comp_done: completion structure to wait for
166 * @timeout: time to wait in milliseconds
168 * Wait for a completion signal or until the timeout limit is reached
169 * while checking that the device is still active.
171 static int ibmvnic_wait_for_completion(struct ibmvnic_adapter
*adapter
,
172 struct completion
*comp_done
,
173 unsigned long timeout
)
175 struct net_device
*netdev
;
176 unsigned long div_timeout
;
179 netdev
= adapter
->netdev
;
181 div_timeout
= msecs_to_jiffies(timeout
/ retry
);
183 if (!adapter
->crq
.active
) {
184 netdev_err(netdev
, "Device down!\n");
189 if (wait_for_completion_timeout(comp_done
, div_timeout
))
192 netdev_err(netdev
, "Operation timed out.\n");
196 static int alloc_long_term_buff(struct ibmvnic_adapter
*adapter
,
197 struct ibmvnic_long_term_buff
*ltb
, int size
)
199 struct device
*dev
= &adapter
->vdev
->dev
;
203 ltb
->buff
= dma_alloc_coherent(dev
, ltb
->size
, <b
->addr
,
207 dev_err(dev
, "Couldn't alloc long term buffer\n");
210 ltb
->map_id
= adapter
->map_id
;
213 mutex_lock(&adapter
->fw_lock
);
214 adapter
->fw_done_rc
= 0;
215 reinit_completion(&adapter
->fw_done
);
216 rc
= send_request_map(adapter
, ltb
->addr
,
217 ltb
->size
, ltb
->map_id
);
219 dma_free_coherent(dev
, ltb
->size
, ltb
->buff
, ltb
->addr
);
220 mutex_unlock(&adapter
->fw_lock
);
224 rc
= ibmvnic_wait_for_completion(adapter
, &adapter
->fw_done
, 10000);
227 "Long term map request aborted or timed out,rc = %d\n",
229 dma_free_coherent(dev
, ltb
->size
, ltb
->buff
, ltb
->addr
);
230 mutex_unlock(&adapter
->fw_lock
);
234 if (adapter
->fw_done_rc
) {
235 dev_err(dev
, "Couldn't map long term buffer,rc = %d\n",
236 adapter
->fw_done_rc
);
237 dma_free_coherent(dev
, ltb
->size
, ltb
->buff
, ltb
->addr
);
238 mutex_unlock(&adapter
->fw_lock
);
241 mutex_unlock(&adapter
->fw_lock
);
245 static void free_long_term_buff(struct ibmvnic_adapter
*adapter
,
246 struct ibmvnic_long_term_buff
*ltb
)
248 struct device
*dev
= &adapter
->vdev
->dev
;
253 if (adapter
->reset_reason
!= VNIC_RESET_FAILOVER
&&
254 adapter
->reset_reason
!= VNIC_RESET_MOBILITY
)
255 send_request_unmap(adapter
, ltb
->map_id
);
256 dma_free_coherent(dev
, ltb
->size
, ltb
->buff
, ltb
->addr
);
259 static int reset_long_term_buff(struct ibmvnic_adapter
*adapter
,
260 struct ibmvnic_long_term_buff
*ltb
)
262 struct device
*dev
= &adapter
->vdev
->dev
;
265 memset(ltb
->buff
, 0, ltb
->size
);
267 mutex_lock(&adapter
->fw_lock
);
268 adapter
->fw_done_rc
= 0;
270 reinit_completion(&adapter
->fw_done
);
271 rc
= send_request_map(adapter
, ltb
->addr
, ltb
->size
, ltb
->map_id
);
273 mutex_unlock(&adapter
->fw_lock
);
277 rc
= ibmvnic_wait_for_completion(adapter
, &adapter
->fw_done
, 10000);
280 "Reset failed, long term map request timed out or aborted\n");
281 mutex_unlock(&adapter
->fw_lock
);
285 if (adapter
->fw_done_rc
) {
287 "Reset failed, attempting to free and reallocate buffer\n");
288 free_long_term_buff(adapter
, ltb
);
289 mutex_unlock(&adapter
->fw_lock
);
290 return alloc_long_term_buff(adapter
, ltb
, ltb
->size
);
292 mutex_unlock(&adapter
->fw_lock
);
296 static void deactivate_rx_pools(struct ibmvnic_adapter
*adapter
)
300 for (i
= 0; i
< be32_to_cpu(adapter
->login_rsp_buf
->num_rxadd_subcrqs
);
302 adapter
->rx_pool
[i
].active
= 0;
305 static void replenish_rx_pool(struct ibmvnic_adapter
*adapter
,
306 struct ibmvnic_rx_pool
*pool
)
308 int count
= pool
->size
- atomic_read(&pool
->available
);
309 struct device
*dev
= &adapter
->vdev
->dev
;
310 int buffers_added
= 0;
311 unsigned long lpar_rc
;
312 union sub_crq sub_crq
;
325 handle_array
= (u64
*)((u8
*)(adapter
->login_rsp_buf
) +
326 be32_to_cpu(adapter
->login_rsp_buf
->
329 for (i
= 0; i
< count
; ++i
) {
330 skb
= alloc_skb(pool
->buff_size
, GFP_ATOMIC
);
332 dev_err(dev
, "Couldn't replenish rx buff\n");
333 adapter
->replenish_no_mem
++;
337 index
= pool
->free_map
[pool
->next_free
];
339 if (pool
->rx_buff
[index
].skb
)
340 dev_err(dev
, "Inconsistent free_map!\n");
342 /* Copy the skb to the long term mapped DMA buffer */
343 offset
= index
* pool
->buff_size
;
344 dst
= pool
->long_term_buff
.buff
+ offset
;
345 memset(dst
, 0, pool
->buff_size
);
346 dma_addr
= pool
->long_term_buff
.addr
+ offset
;
347 pool
->rx_buff
[index
].data
= dst
;
349 pool
->free_map
[pool
->next_free
] = IBMVNIC_INVALID_MAP
;
350 pool
->rx_buff
[index
].dma
= dma_addr
;
351 pool
->rx_buff
[index
].skb
= skb
;
352 pool
->rx_buff
[index
].pool_index
= pool
->index
;
353 pool
->rx_buff
[index
].size
= pool
->buff_size
;
355 memset(&sub_crq
, 0, sizeof(sub_crq
));
356 sub_crq
.rx_add
.first
= IBMVNIC_CRQ_CMD
;
357 sub_crq
.rx_add
.correlator
=
358 cpu_to_be64((u64
)&pool
->rx_buff
[index
]);
359 sub_crq
.rx_add
.ioba
= cpu_to_be32(dma_addr
);
360 sub_crq
.rx_add
.map_id
= pool
->long_term_buff
.map_id
;
362 /* The length field of the sCRQ is defined to be 24 bits so the
363 * buffer size needs to be left shifted by a byte before it is
364 * converted to big endian to prevent the last byte from being
367 #ifdef __LITTLE_ENDIAN__
370 sub_crq
.rx_add
.len
= cpu_to_be32(pool
->buff_size
<< shift
);
372 lpar_rc
= send_subcrq(adapter
, handle_array
[pool
->index
],
374 if (lpar_rc
!= H_SUCCESS
)
378 adapter
->replenish_add_buff_success
++;
379 pool
->next_free
= (pool
->next_free
+ 1) % pool
->size
;
381 atomic_add(buffers_added
, &pool
->available
);
385 if (lpar_rc
!= H_PARAMETER
&& lpar_rc
!= H_CLOSED
)
386 dev_err_ratelimited(dev
, "rx: replenish packet buffer failed\n");
387 pool
->free_map
[pool
->next_free
] = index
;
388 pool
->rx_buff
[index
].skb
= NULL
;
390 dev_kfree_skb_any(skb
);
391 adapter
->replenish_add_buff_failure
++;
392 atomic_add(buffers_added
, &pool
->available
);
394 if (lpar_rc
== H_CLOSED
|| adapter
->failover_pending
) {
395 /* Disable buffer pool replenishment and report carrier off if
396 * queue is closed or pending failover.
397 * Firmware guarantees that a signal will be sent to the
398 * driver, triggering a reset.
400 deactivate_rx_pools(adapter
);
401 netif_carrier_off(adapter
->netdev
);
405 static void replenish_pools(struct ibmvnic_adapter
*adapter
)
409 adapter
->replenish_task_cycles
++;
410 for (i
= 0; i
< be32_to_cpu(adapter
->login_rsp_buf
->num_rxadd_subcrqs
);
412 if (adapter
->rx_pool
[i
].active
)
413 replenish_rx_pool(adapter
, &adapter
->rx_pool
[i
]);
417 static void release_stats_buffers(struct ibmvnic_adapter
*adapter
)
419 kfree(adapter
->tx_stats_buffers
);
420 kfree(adapter
->rx_stats_buffers
);
421 adapter
->tx_stats_buffers
= NULL
;
422 adapter
->rx_stats_buffers
= NULL
;
425 static int init_stats_buffers(struct ibmvnic_adapter
*adapter
)
427 adapter
->tx_stats_buffers
=
428 kcalloc(IBMVNIC_MAX_QUEUES
,
429 sizeof(struct ibmvnic_tx_queue_stats
),
431 if (!adapter
->tx_stats_buffers
)
434 adapter
->rx_stats_buffers
=
435 kcalloc(IBMVNIC_MAX_QUEUES
,
436 sizeof(struct ibmvnic_rx_queue_stats
),
438 if (!adapter
->rx_stats_buffers
)
444 static void release_stats_token(struct ibmvnic_adapter
*adapter
)
446 struct device
*dev
= &adapter
->vdev
->dev
;
448 if (!adapter
->stats_token
)
451 dma_unmap_single(dev
, adapter
->stats_token
,
452 sizeof(struct ibmvnic_statistics
),
454 adapter
->stats_token
= 0;
457 static int init_stats_token(struct ibmvnic_adapter
*adapter
)
459 struct device
*dev
= &adapter
->vdev
->dev
;
462 stok
= dma_map_single(dev
, &adapter
->stats
,
463 sizeof(struct ibmvnic_statistics
),
465 if (dma_mapping_error(dev
, stok
)) {
466 dev_err(dev
, "Couldn't map stats buffer\n");
470 adapter
->stats_token
= stok
;
471 netdev_dbg(adapter
->netdev
, "Stats token initialized (%llx)\n", stok
);
475 static int reset_rx_pools(struct ibmvnic_adapter
*adapter
)
477 struct ibmvnic_rx_pool
*rx_pool
;
482 size_array
= (u64
*)((u8
*)(adapter
->login_rsp_buf
) +
483 be32_to_cpu(adapter
->login_rsp_buf
->off_rxadd_buff_size
));
485 rx_scrqs
= be32_to_cpu(adapter
->login_rsp_buf
->num_rxadd_subcrqs
);
486 for (i
= 0; i
< rx_scrqs
; i
++) {
487 rx_pool
= &adapter
->rx_pool
[i
];
489 netdev_dbg(adapter
->netdev
, "Re-setting rx_pool[%d]\n", i
);
491 if (rx_pool
->buff_size
!= be64_to_cpu(size_array
[i
])) {
492 free_long_term_buff(adapter
, &rx_pool
->long_term_buff
);
493 rx_pool
->buff_size
= be64_to_cpu(size_array
[i
]);
494 rc
= alloc_long_term_buff(adapter
,
495 &rx_pool
->long_term_buff
,
499 rc
= reset_long_term_buff(adapter
,
500 &rx_pool
->long_term_buff
);
506 for (j
= 0; j
< rx_pool
->size
; j
++)
507 rx_pool
->free_map
[j
] = j
;
509 memset(rx_pool
->rx_buff
, 0,
510 rx_pool
->size
* sizeof(struct ibmvnic_rx_buff
));
512 atomic_set(&rx_pool
->available
, 0);
513 rx_pool
->next_alloc
= 0;
514 rx_pool
->next_free
= 0;
521 static void release_rx_pools(struct ibmvnic_adapter
*adapter
)
523 struct ibmvnic_rx_pool
*rx_pool
;
526 if (!adapter
->rx_pool
)
529 for (i
= 0; i
< adapter
->num_active_rx_pools
; i
++) {
530 rx_pool
= &adapter
->rx_pool
[i
];
532 netdev_dbg(adapter
->netdev
, "Releasing rx_pool[%d]\n", i
);
534 kfree(rx_pool
->free_map
);
535 free_long_term_buff(adapter
, &rx_pool
->long_term_buff
);
537 if (!rx_pool
->rx_buff
)
540 for (j
= 0; j
< rx_pool
->size
; j
++) {
541 if (rx_pool
->rx_buff
[j
].skb
) {
542 dev_kfree_skb_any(rx_pool
->rx_buff
[j
].skb
);
543 rx_pool
->rx_buff
[j
].skb
= NULL
;
547 kfree(rx_pool
->rx_buff
);
550 kfree(adapter
->rx_pool
);
551 adapter
->rx_pool
= NULL
;
552 adapter
->num_active_rx_pools
= 0;
555 static int init_rx_pools(struct net_device
*netdev
)
557 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
558 struct device
*dev
= &adapter
->vdev
->dev
;
559 struct ibmvnic_rx_pool
*rx_pool
;
565 be32_to_cpu(adapter
->login_rsp_buf
->num_rxadd_subcrqs
);
566 size_array
= (u64
*)((u8
*)(adapter
->login_rsp_buf
) +
567 be32_to_cpu(adapter
->login_rsp_buf
->off_rxadd_buff_size
));
569 adapter
->rx_pool
= kcalloc(rxadd_subcrqs
,
570 sizeof(struct ibmvnic_rx_pool
),
572 if (!adapter
->rx_pool
) {
573 dev_err(dev
, "Failed to allocate rx pools\n");
577 adapter
->num_active_rx_pools
= rxadd_subcrqs
;
579 for (i
= 0; i
< rxadd_subcrqs
; i
++) {
580 rx_pool
= &adapter
->rx_pool
[i
];
582 netdev_dbg(adapter
->netdev
,
583 "Initializing rx_pool[%d], %lld buffs, %lld bytes each\n",
584 i
, adapter
->req_rx_add_entries_per_subcrq
,
585 be64_to_cpu(size_array
[i
]));
587 rx_pool
->size
= adapter
->req_rx_add_entries_per_subcrq
;
589 rx_pool
->buff_size
= be64_to_cpu(size_array
[i
]);
592 rx_pool
->free_map
= kcalloc(rx_pool
->size
, sizeof(int),
594 if (!rx_pool
->free_map
) {
595 release_rx_pools(adapter
);
599 rx_pool
->rx_buff
= kcalloc(rx_pool
->size
,
600 sizeof(struct ibmvnic_rx_buff
),
602 if (!rx_pool
->rx_buff
) {
603 dev_err(dev
, "Couldn't alloc rx buffers\n");
604 release_rx_pools(adapter
);
608 if (alloc_long_term_buff(adapter
, &rx_pool
->long_term_buff
,
609 rx_pool
->size
* rx_pool
->buff_size
)) {
610 release_rx_pools(adapter
);
614 for (j
= 0; j
< rx_pool
->size
; ++j
)
615 rx_pool
->free_map
[j
] = j
;
617 atomic_set(&rx_pool
->available
, 0);
618 rx_pool
->next_alloc
= 0;
619 rx_pool
->next_free
= 0;
625 static int reset_one_tx_pool(struct ibmvnic_adapter
*adapter
,
626 struct ibmvnic_tx_pool
*tx_pool
)
630 rc
= reset_long_term_buff(adapter
, &tx_pool
->long_term_buff
);
634 memset(tx_pool
->tx_buff
, 0,
635 tx_pool
->num_buffers
*
636 sizeof(struct ibmvnic_tx_buff
));
638 for (i
= 0; i
< tx_pool
->num_buffers
; i
++)
639 tx_pool
->free_map
[i
] = i
;
641 tx_pool
->consumer_index
= 0;
642 tx_pool
->producer_index
= 0;
647 static int reset_tx_pools(struct ibmvnic_adapter
*adapter
)
652 tx_scrqs
= be32_to_cpu(adapter
->login_rsp_buf
->num_txsubm_subcrqs
);
653 for (i
= 0; i
< tx_scrqs
; i
++) {
654 rc
= reset_one_tx_pool(adapter
, &adapter
->tso_pool
[i
]);
657 rc
= reset_one_tx_pool(adapter
, &adapter
->tx_pool
[i
]);
665 static void release_vpd_data(struct ibmvnic_adapter
*adapter
)
670 kfree(adapter
->vpd
->buff
);
676 static void release_one_tx_pool(struct ibmvnic_adapter
*adapter
,
677 struct ibmvnic_tx_pool
*tx_pool
)
679 kfree(tx_pool
->tx_buff
);
680 kfree(tx_pool
->free_map
);
681 free_long_term_buff(adapter
, &tx_pool
->long_term_buff
);
684 static void release_tx_pools(struct ibmvnic_adapter
*adapter
)
688 if (!adapter
->tx_pool
)
691 for (i
= 0; i
< adapter
->num_active_tx_pools
; i
++) {
692 release_one_tx_pool(adapter
, &adapter
->tx_pool
[i
]);
693 release_one_tx_pool(adapter
, &adapter
->tso_pool
[i
]);
696 kfree(adapter
->tx_pool
);
697 adapter
->tx_pool
= NULL
;
698 kfree(adapter
->tso_pool
);
699 adapter
->tso_pool
= NULL
;
700 adapter
->num_active_tx_pools
= 0;
703 static int init_one_tx_pool(struct net_device
*netdev
,
704 struct ibmvnic_tx_pool
*tx_pool
,
705 int num_entries
, int buf_size
)
707 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
710 tx_pool
->tx_buff
= kcalloc(num_entries
,
711 sizeof(struct ibmvnic_tx_buff
),
713 if (!tx_pool
->tx_buff
)
716 if (alloc_long_term_buff(adapter
, &tx_pool
->long_term_buff
,
717 num_entries
* buf_size
))
720 tx_pool
->free_map
= kcalloc(num_entries
, sizeof(int), GFP_KERNEL
);
721 if (!tx_pool
->free_map
)
724 for (i
= 0; i
< num_entries
; i
++)
725 tx_pool
->free_map
[i
] = i
;
727 tx_pool
->consumer_index
= 0;
728 tx_pool
->producer_index
= 0;
729 tx_pool
->num_buffers
= num_entries
;
730 tx_pool
->buf_size
= buf_size
;
735 static int init_tx_pools(struct net_device
*netdev
)
737 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
741 tx_subcrqs
= be32_to_cpu(adapter
->login_rsp_buf
->num_txsubm_subcrqs
);
742 adapter
->tx_pool
= kcalloc(tx_subcrqs
,
743 sizeof(struct ibmvnic_tx_pool
), GFP_KERNEL
);
744 if (!adapter
->tx_pool
)
747 adapter
->tso_pool
= kcalloc(tx_subcrqs
,
748 sizeof(struct ibmvnic_tx_pool
), GFP_KERNEL
);
749 if (!adapter
->tso_pool
)
752 adapter
->num_active_tx_pools
= tx_subcrqs
;
754 for (i
= 0; i
< tx_subcrqs
; i
++) {
755 rc
= init_one_tx_pool(netdev
, &adapter
->tx_pool
[i
],
756 adapter
->req_tx_entries_per_subcrq
,
757 adapter
->req_mtu
+ VLAN_HLEN
);
759 release_tx_pools(adapter
);
763 rc
= init_one_tx_pool(netdev
, &adapter
->tso_pool
[i
],
767 release_tx_pools(adapter
);
775 static void ibmvnic_napi_enable(struct ibmvnic_adapter
*adapter
)
779 if (adapter
->napi_enabled
)
782 for (i
= 0; i
< adapter
->req_rx_queues
; i
++)
783 napi_enable(&adapter
->napi
[i
]);
785 adapter
->napi_enabled
= true;
788 static void ibmvnic_napi_disable(struct ibmvnic_adapter
*adapter
)
792 if (!adapter
->napi_enabled
)
795 for (i
= 0; i
< adapter
->req_rx_queues
; i
++) {
796 netdev_dbg(adapter
->netdev
, "Disabling napi[%d]\n", i
);
797 napi_disable(&adapter
->napi
[i
]);
800 adapter
->napi_enabled
= false;
803 static int init_napi(struct ibmvnic_adapter
*adapter
)
807 adapter
->napi
= kcalloc(adapter
->req_rx_queues
,
808 sizeof(struct napi_struct
), GFP_KERNEL
);
812 for (i
= 0; i
< adapter
->req_rx_queues
; i
++) {
813 netdev_dbg(adapter
->netdev
, "Adding napi[%d]\n", i
);
814 netif_napi_add(adapter
->netdev
, &adapter
->napi
[i
],
815 ibmvnic_poll
, NAPI_POLL_WEIGHT
);
818 adapter
->num_active_rx_napi
= adapter
->req_rx_queues
;
822 static void release_napi(struct ibmvnic_adapter
*adapter
)
829 for (i
= 0; i
< adapter
->num_active_rx_napi
; i
++) {
830 netdev_dbg(adapter
->netdev
, "Releasing napi[%d]\n", i
);
831 netif_napi_del(&adapter
->napi
[i
]);
834 kfree(adapter
->napi
);
835 adapter
->napi
= NULL
;
836 adapter
->num_active_rx_napi
= 0;
837 adapter
->napi_enabled
= false;
840 static int ibmvnic_login(struct net_device
*netdev
)
842 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
843 unsigned long timeout
= msecs_to_jiffies(30000);
850 if (retry_count
> IBMVNIC_MAX_QUEUES
) {
851 netdev_warn(netdev
, "Login attempts exceeded\n");
855 adapter
->init_done_rc
= 0;
856 reinit_completion(&adapter
->init_done
);
857 rc
= send_login(adapter
);
859 netdev_warn(netdev
, "Unable to login\n");
863 if (!wait_for_completion_timeout(&adapter
->init_done
,
865 netdev_warn(netdev
, "Login timed out\n");
869 if (adapter
->init_done_rc
== PARTIALSUCCESS
) {
871 release_sub_crqs(adapter
, 1);
875 "Received partial success, retrying...\n");
876 adapter
->init_done_rc
= 0;
877 reinit_completion(&adapter
->init_done
);
878 send_cap_queries(adapter
);
879 if (!wait_for_completion_timeout(&adapter
->init_done
,
882 "Capabilities query timed out\n");
886 rc
= init_sub_crqs(adapter
);
889 "SCRQ initialization failed\n");
893 rc
= init_sub_crq_irqs(adapter
);
896 "SCRQ irq initialization failed\n");
899 } else if (adapter
->init_done_rc
) {
900 netdev_warn(netdev
, "Adapter login failed\n");
905 __ibmvnic_set_mac(netdev
, adapter
->mac_addr
);
910 static void release_login_buffer(struct ibmvnic_adapter
*adapter
)
912 kfree(adapter
->login_buf
);
913 adapter
->login_buf
= NULL
;
916 static void release_login_rsp_buffer(struct ibmvnic_adapter
*adapter
)
918 kfree(adapter
->login_rsp_buf
);
919 adapter
->login_rsp_buf
= NULL
;
922 static void release_resources(struct ibmvnic_adapter
*adapter
)
924 release_vpd_data(adapter
);
926 release_tx_pools(adapter
);
927 release_rx_pools(adapter
);
929 release_napi(adapter
);
930 release_login_rsp_buffer(adapter
);
933 static int set_link_state(struct ibmvnic_adapter
*adapter
, u8 link_state
)
935 struct net_device
*netdev
= adapter
->netdev
;
936 unsigned long timeout
= msecs_to_jiffies(30000);
937 union ibmvnic_crq crq
;
941 netdev_dbg(netdev
, "setting link state %d\n", link_state
);
943 memset(&crq
, 0, sizeof(crq
));
944 crq
.logical_link_state
.first
= IBMVNIC_CRQ_CMD
;
945 crq
.logical_link_state
.cmd
= LOGICAL_LINK_STATE
;
946 crq
.logical_link_state
.link_state
= link_state
;
951 reinit_completion(&adapter
->init_done
);
952 rc
= ibmvnic_send_crq(adapter
, &crq
);
954 netdev_err(netdev
, "Failed to set link state\n");
958 if (!wait_for_completion_timeout(&adapter
->init_done
,
960 netdev_err(netdev
, "timeout setting link state\n");
964 if (adapter
->init_done_rc
== 1) {
965 /* Partuial success, delay and re-send */
968 } else if (adapter
->init_done_rc
) {
969 netdev_warn(netdev
, "Unable to set link state, rc=%d\n",
970 adapter
->init_done_rc
);
971 return adapter
->init_done_rc
;
978 static int set_real_num_queues(struct net_device
*netdev
)
980 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
983 netdev_dbg(netdev
, "Setting real tx/rx queues (%llx/%llx)\n",
984 adapter
->req_tx_queues
, adapter
->req_rx_queues
);
986 rc
= netif_set_real_num_tx_queues(netdev
, adapter
->req_tx_queues
);
988 netdev_err(netdev
, "failed to set the number of tx queues\n");
992 rc
= netif_set_real_num_rx_queues(netdev
, adapter
->req_rx_queues
);
994 netdev_err(netdev
, "failed to set the number of rx queues\n");
999 static int ibmvnic_get_vpd(struct ibmvnic_adapter
*adapter
)
1001 struct device
*dev
= &adapter
->vdev
->dev
;
1002 union ibmvnic_crq crq
;
1006 if (adapter
->vpd
->buff
)
1007 len
= adapter
->vpd
->len
;
1009 mutex_lock(&adapter
->fw_lock
);
1010 adapter
->fw_done_rc
= 0;
1011 reinit_completion(&adapter
->fw_done
);
1013 crq
.get_vpd_size
.first
= IBMVNIC_CRQ_CMD
;
1014 crq
.get_vpd_size
.cmd
= GET_VPD_SIZE
;
1015 rc
= ibmvnic_send_crq(adapter
, &crq
);
1017 mutex_unlock(&adapter
->fw_lock
);
1021 rc
= ibmvnic_wait_for_completion(adapter
, &adapter
->fw_done
, 10000);
1023 dev_err(dev
, "Could not retrieve VPD size, rc = %d\n", rc
);
1024 mutex_unlock(&adapter
->fw_lock
);
1027 mutex_unlock(&adapter
->fw_lock
);
1029 if (!adapter
->vpd
->len
)
1032 if (!adapter
->vpd
->buff
)
1033 adapter
->vpd
->buff
= kzalloc(adapter
->vpd
->len
, GFP_KERNEL
);
1034 else if (adapter
->vpd
->len
!= len
)
1035 adapter
->vpd
->buff
=
1036 krealloc(adapter
->vpd
->buff
,
1037 adapter
->vpd
->len
, GFP_KERNEL
);
1039 if (!adapter
->vpd
->buff
) {
1040 dev_err(dev
, "Could allocate VPD buffer\n");
1044 adapter
->vpd
->dma_addr
=
1045 dma_map_single(dev
, adapter
->vpd
->buff
, adapter
->vpd
->len
,
1047 if (dma_mapping_error(dev
, adapter
->vpd
->dma_addr
)) {
1048 dev_err(dev
, "Could not map VPD buffer\n");
1049 kfree(adapter
->vpd
->buff
);
1050 adapter
->vpd
->buff
= NULL
;
1054 mutex_lock(&adapter
->fw_lock
);
1055 adapter
->fw_done_rc
= 0;
1056 reinit_completion(&adapter
->fw_done
);
1058 crq
.get_vpd
.first
= IBMVNIC_CRQ_CMD
;
1059 crq
.get_vpd
.cmd
= GET_VPD
;
1060 crq
.get_vpd
.ioba
= cpu_to_be32(adapter
->vpd
->dma_addr
);
1061 crq
.get_vpd
.len
= cpu_to_be32((u32
)adapter
->vpd
->len
);
1062 rc
= ibmvnic_send_crq(adapter
, &crq
);
1064 kfree(adapter
->vpd
->buff
);
1065 adapter
->vpd
->buff
= NULL
;
1066 mutex_unlock(&adapter
->fw_lock
);
1070 rc
= ibmvnic_wait_for_completion(adapter
, &adapter
->fw_done
, 10000);
1072 dev_err(dev
, "Unable to retrieve VPD, rc = %d\n", rc
);
1073 kfree(adapter
->vpd
->buff
);
1074 adapter
->vpd
->buff
= NULL
;
1075 mutex_unlock(&adapter
->fw_lock
);
1079 mutex_unlock(&adapter
->fw_lock
);
1083 static int init_resources(struct ibmvnic_adapter
*adapter
)
1085 struct net_device
*netdev
= adapter
->netdev
;
1088 rc
= set_real_num_queues(netdev
);
1092 adapter
->vpd
= kzalloc(sizeof(*adapter
->vpd
), GFP_KERNEL
);
1096 /* Vital Product Data (VPD) */
1097 rc
= ibmvnic_get_vpd(adapter
);
1099 netdev_err(netdev
, "failed to initialize Vital Product Data (VPD)\n");
1103 adapter
->map_id
= 1;
1105 rc
= init_napi(adapter
);
1109 send_map_query(adapter
);
1111 rc
= init_rx_pools(netdev
);
1115 rc
= init_tx_pools(netdev
);
1119 static int __ibmvnic_open(struct net_device
*netdev
)
1121 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
1122 enum vnic_state prev_state
= adapter
->state
;
1125 adapter
->state
= VNIC_OPENING
;
1126 replenish_pools(adapter
);
1127 ibmvnic_napi_enable(adapter
);
1129 /* We're ready to receive frames, enable the sub-crq interrupts and
1130 * set the logical link state to up
1132 for (i
= 0; i
< adapter
->req_rx_queues
; i
++) {
1133 netdev_dbg(netdev
, "Enabling rx_scrq[%d] irq\n", i
);
1134 if (prev_state
== VNIC_CLOSED
)
1135 enable_irq(adapter
->rx_scrq
[i
]->irq
);
1136 enable_scrq_irq(adapter
, adapter
->rx_scrq
[i
]);
1139 for (i
= 0; i
< adapter
->req_tx_queues
; i
++) {
1140 netdev_dbg(netdev
, "Enabling tx_scrq[%d] irq\n", i
);
1141 if (prev_state
== VNIC_CLOSED
)
1142 enable_irq(adapter
->tx_scrq
[i
]->irq
);
1143 enable_scrq_irq(adapter
, adapter
->tx_scrq
[i
]);
1146 rc
= set_link_state(adapter
, IBMVNIC_LOGICAL_LNK_UP
);
1148 for (i
= 0; i
< adapter
->req_rx_queues
; i
++)
1149 napi_disable(&adapter
->napi
[i
]);
1150 release_resources(adapter
);
1154 netif_tx_start_all_queues(netdev
);
1156 if (prev_state
== VNIC_CLOSED
) {
1157 for (i
= 0; i
< adapter
->req_rx_queues
; i
++)
1158 napi_schedule(&adapter
->napi
[i
]);
1161 adapter
->state
= VNIC_OPEN
;
1165 static int ibmvnic_open(struct net_device
*netdev
)
1167 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
1170 /* If device failover is pending, just set device state and return.
1171 * Device operation will be handled by reset routine.
1173 if (adapter
->failover_pending
) {
1174 adapter
->state
= VNIC_OPEN
;
1178 if (adapter
->state
!= VNIC_CLOSED
) {
1179 rc
= ibmvnic_login(netdev
);
1183 rc
= init_resources(adapter
);
1185 netdev_err(netdev
, "failed to initialize resources\n");
1186 release_resources(adapter
);
1191 rc
= __ibmvnic_open(netdev
);
1196 static void clean_rx_pools(struct ibmvnic_adapter
*adapter
)
1198 struct ibmvnic_rx_pool
*rx_pool
;
1199 struct ibmvnic_rx_buff
*rx_buff
;
1204 if (!adapter
->rx_pool
)
1207 rx_scrqs
= adapter
->num_active_rx_pools
;
1208 rx_entries
= adapter
->req_rx_add_entries_per_subcrq
;
1210 /* Free any remaining skbs in the rx buffer pools */
1211 for (i
= 0; i
< rx_scrqs
; i
++) {
1212 rx_pool
= &adapter
->rx_pool
[i
];
1213 if (!rx_pool
|| !rx_pool
->rx_buff
)
1216 netdev_dbg(adapter
->netdev
, "Cleaning rx_pool[%d]\n", i
);
1217 for (j
= 0; j
< rx_entries
; j
++) {
1218 rx_buff
= &rx_pool
->rx_buff
[j
];
1219 if (rx_buff
&& rx_buff
->skb
) {
1220 dev_kfree_skb_any(rx_buff
->skb
);
1221 rx_buff
->skb
= NULL
;
1227 static void clean_one_tx_pool(struct ibmvnic_adapter
*adapter
,
1228 struct ibmvnic_tx_pool
*tx_pool
)
1230 struct ibmvnic_tx_buff
*tx_buff
;
1234 if (!tx_pool
|| !tx_pool
->tx_buff
)
1237 tx_entries
= tx_pool
->num_buffers
;
1239 for (i
= 0; i
< tx_entries
; i
++) {
1240 tx_buff
= &tx_pool
->tx_buff
[i
];
1241 if (tx_buff
&& tx_buff
->skb
) {
1242 dev_kfree_skb_any(tx_buff
->skb
);
1243 tx_buff
->skb
= NULL
;
1248 static void clean_tx_pools(struct ibmvnic_adapter
*adapter
)
1253 if (!adapter
->tx_pool
|| !adapter
->tso_pool
)
1256 tx_scrqs
= adapter
->num_active_tx_pools
;
1258 /* Free any remaining skbs in the tx buffer pools */
1259 for (i
= 0; i
< tx_scrqs
; i
++) {
1260 netdev_dbg(adapter
->netdev
, "Cleaning tx_pool[%d]\n", i
);
1261 clean_one_tx_pool(adapter
, &adapter
->tx_pool
[i
]);
1262 clean_one_tx_pool(adapter
, &adapter
->tso_pool
[i
]);
1266 static void ibmvnic_disable_irqs(struct ibmvnic_adapter
*adapter
)
1268 struct net_device
*netdev
= adapter
->netdev
;
1271 if (adapter
->tx_scrq
) {
1272 for (i
= 0; i
< adapter
->req_tx_queues
; i
++)
1273 if (adapter
->tx_scrq
[i
]->irq
) {
1275 "Disabling tx_scrq[%d] irq\n", i
);
1276 disable_scrq_irq(adapter
, adapter
->tx_scrq
[i
]);
1277 disable_irq(adapter
->tx_scrq
[i
]->irq
);
1281 if (adapter
->rx_scrq
) {
1282 for (i
= 0; i
< adapter
->req_rx_queues
; i
++) {
1283 if (adapter
->rx_scrq
[i
]->irq
) {
1285 "Disabling rx_scrq[%d] irq\n", i
);
1286 disable_scrq_irq(adapter
, adapter
->rx_scrq
[i
]);
1287 disable_irq(adapter
->rx_scrq
[i
]->irq
);
1293 static void ibmvnic_cleanup(struct net_device
*netdev
)
1295 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
1297 /* ensure that transmissions are stopped if called by do_reset */
1298 if (test_bit(0, &adapter
->resetting
))
1299 netif_tx_disable(netdev
);
1301 netif_tx_stop_all_queues(netdev
);
1303 ibmvnic_napi_disable(adapter
);
1304 ibmvnic_disable_irqs(adapter
);
1306 clean_rx_pools(adapter
);
1307 clean_tx_pools(adapter
);
1310 static int __ibmvnic_close(struct net_device
*netdev
)
1312 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
1315 adapter
->state
= VNIC_CLOSING
;
1316 rc
= set_link_state(adapter
, IBMVNIC_LOGICAL_LNK_DN
);
1319 adapter
->state
= VNIC_CLOSED
;
1323 static int ibmvnic_close(struct net_device
*netdev
)
1325 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
1328 /* If device failover is pending, just set device state and return.
1329 * Device operation will be handled by reset routine.
1331 if (adapter
->failover_pending
) {
1332 adapter
->state
= VNIC_CLOSED
;
1336 rc
= __ibmvnic_close(netdev
);
1337 ibmvnic_cleanup(netdev
);
1343 * build_hdr_data - creates L2/L3/L4 header data buffer
1344 * @hdr_field - bitfield determining needed headers
1345 * @skb - socket buffer
1346 * @hdr_len - array of header lengths
1347 * @tot_len - total length of data
1349 * Reads hdr_field to determine which headers are needed by firmware.
1350 * Builds a buffer containing these headers. Saves individual header
1351 * lengths and total buffer length to be used to build descriptors.
1353 static int build_hdr_data(u8 hdr_field
, struct sk_buff
*skb
,
1354 int *hdr_len
, u8
*hdr_data
)
1359 if (skb_vlan_tagged(skb
) && !skb_vlan_tag_present(skb
))
1360 hdr_len
[0] = sizeof(struct vlan_ethhdr
);
1362 hdr_len
[0] = sizeof(struct ethhdr
);
1364 if (skb
->protocol
== htons(ETH_P_IP
)) {
1365 hdr_len
[1] = ip_hdr(skb
)->ihl
* 4;
1366 if (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)
1367 hdr_len
[2] = tcp_hdrlen(skb
);
1368 else if (ip_hdr(skb
)->protocol
== IPPROTO_UDP
)
1369 hdr_len
[2] = sizeof(struct udphdr
);
1370 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
1371 hdr_len
[1] = sizeof(struct ipv6hdr
);
1372 if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_TCP
)
1373 hdr_len
[2] = tcp_hdrlen(skb
);
1374 else if (ipv6_hdr(skb
)->nexthdr
== IPPROTO_UDP
)
1375 hdr_len
[2] = sizeof(struct udphdr
);
1376 } else if (skb
->protocol
== htons(ETH_P_ARP
)) {
1377 hdr_len
[1] = arp_hdr_len(skb
->dev
);
1381 memset(hdr_data
, 0, 120);
1382 if ((hdr_field
>> 6) & 1) {
1383 hdr
= skb_mac_header(skb
);
1384 memcpy(hdr_data
, hdr
, hdr_len
[0]);
1388 if ((hdr_field
>> 5) & 1) {
1389 hdr
= skb_network_header(skb
);
1390 memcpy(hdr_data
+ len
, hdr
, hdr_len
[1]);
1394 if ((hdr_field
>> 4) & 1) {
1395 hdr
= skb_transport_header(skb
);
1396 memcpy(hdr_data
+ len
, hdr
, hdr_len
[2]);
1403 * create_hdr_descs - create header and header extension descriptors
1404 * @hdr_field - bitfield determining needed headers
1405 * @data - buffer containing header data
1406 * @len - length of data buffer
1407 * @hdr_len - array of individual header lengths
1408 * @scrq_arr - descriptor array
1410 * Creates header and, if needed, header extension descriptors and
1411 * places them in a descriptor array, scrq_arr
1414 static int create_hdr_descs(u8 hdr_field
, u8
*hdr_data
, int len
, int *hdr_len
,
1415 union sub_crq
*scrq_arr
)
1417 union sub_crq hdr_desc
;
1423 while (tmp_len
> 0) {
1424 cur
= hdr_data
+ len
- tmp_len
;
1426 memset(&hdr_desc
, 0, sizeof(hdr_desc
));
1427 if (cur
!= hdr_data
) {
1428 data
= hdr_desc
.hdr_ext
.data
;
1429 tmp
= tmp_len
> 29 ? 29 : tmp_len
;
1430 hdr_desc
.hdr_ext
.first
= IBMVNIC_CRQ_CMD
;
1431 hdr_desc
.hdr_ext
.type
= IBMVNIC_HDR_EXT_DESC
;
1432 hdr_desc
.hdr_ext
.len
= tmp
;
1434 data
= hdr_desc
.hdr
.data
;
1435 tmp
= tmp_len
> 24 ? 24 : tmp_len
;
1436 hdr_desc
.hdr
.first
= IBMVNIC_CRQ_CMD
;
1437 hdr_desc
.hdr
.type
= IBMVNIC_HDR_DESC
;
1438 hdr_desc
.hdr
.len
= tmp
;
1439 hdr_desc
.hdr
.l2_len
= (u8
)hdr_len
[0];
1440 hdr_desc
.hdr
.l3_len
= cpu_to_be16((u16
)hdr_len
[1]);
1441 hdr_desc
.hdr
.l4_len
= (u8
)hdr_len
[2];
1442 hdr_desc
.hdr
.flag
= hdr_field
<< 1;
1444 memcpy(data
, cur
, tmp
);
1446 *scrq_arr
= hdr_desc
;
1455 * build_hdr_descs_arr - build a header descriptor array
1456 * @skb - socket buffer
1457 * @num_entries - number of descriptors to be sent
1458 * @subcrq - first TX descriptor
1459 * @hdr_field - bit field determining which headers will be sent
1461 * This function will build a TX descriptor array with applicable
1462 * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect.
1465 static void build_hdr_descs_arr(struct ibmvnic_tx_buff
*txbuff
,
1466 int *num_entries
, u8 hdr_field
)
1468 int hdr_len
[3] = {0, 0, 0};
1470 u8
*hdr_data
= txbuff
->hdr_data
;
1472 tot_len
= build_hdr_data(hdr_field
, txbuff
->skb
, hdr_len
,
1474 *num_entries
+= create_hdr_descs(hdr_field
, hdr_data
, tot_len
, hdr_len
,
1475 txbuff
->indir_arr
+ 1);
1478 static int ibmvnic_xmit_workarounds(struct sk_buff
*skb
,
1479 struct net_device
*netdev
)
1481 /* For some backing devices, mishandling of small packets
1482 * can result in a loss of connection or TX stall. Device
1483 * architects recommend that no packet should be smaller
1484 * than the minimum MTU value provided to the driver, so
1485 * pad any packets to that length
1487 if (skb
->len
< netdev
->min_mtu
)
1488 return skb_put_padto(skb
, netdev
->min_mtu
);
1493 static netdev_tx_t
ibmvnic_xmit(struct sk_buff
*skb
, struct net_device
*netdev
)
1495 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
1496 int queue_num
= skb_get_queue_mapping(skb
);
1497 u8
*hdrs
= (u8
*)&adapter
->tx_rx_desc_req
;
1498 struct device
*dev
= &adapter
->vdev
->dev
;
1499 struct ibmvnic_tx_buff
*tx_buff
= NULL
;
1500 struct ibmvnic_sub_crq_queue
*tx_scrq
;
1501 struct ibmvnic_tx_pool
*tx_pool
;
1502 unsigned int tx_send_failed
= 0;
1503 unsigned int tx_map_failed
= 0;
1504 unsigned int tx_dropped
= 0;
1505 unsigned int tx_packets
= 0;
1506 unsigned int tx_bytes
= 0;
1507 dma_addr_t data_dma_addr
;
1508 struct netdev_queue
*txq
;
1509 unsigned long lpar_rc
;
1510 union sub_crq tx_crq
;
1511 unsigned int offset
;
1512 int num_entries
= 1;
1517 netdev_tx_t ret
= NETDEV_TX_OK
;
1519 if (test_bit(0, &adapter
->resetting
)) {
1520 if (!netif_subqueue_stopped(netdev
, skb
))
1521 netif_stop_subqueue(netdev
, queue_num
);
1522 dev_kfree_skb_any(skb
);
1530 if (ibmvnic_xmit_workarounds(skb
, netdev
)) {
1536 if (skb_is_gso(skb
))
1537 tx_pool
= &adapter
->tso_pool
[queue_num
];
1539 tx_pool
= &adapter
->tx_pool
[queue_num
];
1541 tx_scrq
= adapter
->tx_scrq
[queue_num
];
1542 txq
= netdev_get_tx_queue(netdev
, skb_get_queue_mapping(skb
));
1543 handle_array
= (u64
*)((u8
*)(adapter
->login_rsp_buf
) +
1544 be32_to_cpu(adapter
->login_rsp_buf
->off_txsubm_subcrqs
));
1546 index
= tx_pool
->free_map
[tx_pool
->consumer_index
];
1548 if (index
== IBMVNIC_INVALID_MAP
) {
1549 dev_kfree_skb_any(skb
);
1556 tx_pool
->free_map
[tx_pool
->consumer_index
] = IBMVNIC_INVALID_MAP
;
1558 offset
= index
* tx_pool
->buf_size
;
1559 dst
= tx_pool
->long_term_buff
.buff
+ offset
;
1560 memset(dst
, 0, tx_pool
->buf_size
);
1561 data_dma_addr
= tx_pool
->long_term_buff
.addr
+ offset
;
1563 if (skb_shinfo(skb
)->nr_frags
) {
1567 skb_copy_from_linear_data(skb
, dst
, skb_headlen(skb
));
1568 cur
= skb_headlen(skb
);
1570 /* Copy the frags */
1571 for (i
= 0; i
< skb_shinfo(skb
)->nr_frags
; i
++) {
1572 const skb_frag_t
*frag
= &skb_shinfo(skb
)->frags
[i
];
1575 page_address(skb_frag_page(frag
)) +
1576 skb_frag_off(frag
), skb_frag_size(frag
));
1577 cur
+= skb_frag_size(frag
);
1580 skb_copy_from_linear_data(skb
, dst
, skb
->len
);
1583 tx_pool
->consumer_index
=
1584 (tx_pool
->consumer_index
+ 1) % tx_pool
->num_buffers
;
1586 tx_buff
= &tx_pool
->tx_buff
[index
];
1588 tx_buff
->data_dma
[0] = data_dma_addr
;
1589 tx_buff
->data_len
[0] = skb
->len
;
1590 tx_buff
->index
= index
;
1591 tx_buff
->pool_index
= queue_num
;
1592 tx_buff
->last_frag
= true;
1594 memset(&tx_crq
, 0, sizeof(tx_crq
));
1595 tx_crq
.v1
.first
= IBMVNIC_CRQ_CMD
;
1596 tx_crq
.v1
.type
= IBMVNIC_TX_DESC
;
1597 tx_crq
.v1
.n_crq_elem
= 1;
1598 tx_crq
.v1
.n_sge
= 1;
1599 tx_crq
.v1
.flags1
= IBMVNIC_TX_COMP_NEEDED
;
1601 if (skb_is_gso(skb
))
1602 tx_crq
.v1
.correlator
=
1603 cpu_to_be32(index
| IBMVNIC_TSO_POOL_MASK
);
1605 tx_crq
.v1
.correlator
= cpu_to_be32(index
);
1606 tx_crq
.v1
.dma_reg
= cpu_to_be16(tx_pool
->long_term_buff
.map_id
);
1607 tx_crq
.v1
.sge_len
= cpu_to_be32(skb
->len
);
1608 tx_crq
.v1
.ioba
= cpu_to_be64(data_dma_addr
);
1610 if (adapter
->vlan_header_insertion
&& skb_vlan_tag_present(skb
)) {
1611 tx_crq
.v1
.flags2
|= IBMVNIC_TX_VLAN_INSERT
;
1612 tx_crq
.v1
.vlan_id
= cpu_to_be16(skb
->vlan_tci
);
1615 if (skb
->protocol
== htons(ETH_P_IP
)) {
1616 tx_crq
.v1
.flags1
|= IBMVNIC_TX_PROT_IPV4
;
1617 proto
= ip_hdr(skb
)->protocol
;
1618 } else if (skb
->protocol
== htons(ETH_P_IPV6
)) {
1619 tx_crq
.v1
.flags1
|= IBMVNIC_TX_PROT_IPV6
;
1620 proto
= ipv6_hdr(skb
)->nexthdr
;
1623 if (proto
== IPPROTO_TCP
)
1624 tx_crq
.v1
.flags1
|= IBMVNIC_TX_PROT_TCP
;
1625 else if (proto
== IPPROTO_UDP
)
1626 tx_crq
.v1
.flags1
|= IBMVNIC_TX_PROT_UDP
;
1628 if (skb
->ip_summed
== CHECKSUM_PARTIAL
) {
1629 tx_crq
.v1
.flags1
|= IBMVNIC_TX_CHKSUM_OFFLOAD
;
1632 if (skb_is_gso(skb
)) {
1633 tx_crq
.v1
.flags1
|= IBMVNIC_TX_LSO
;
1634 tx_crq
.v1
.mss
= cpu_to_be16(skb_shinfo(skb
)->gso_size
);
1637 /* determine if l2/3/4 headers are sent to firmware */
1638 if ((*hdrs
>> 7) & 1) {
1639 build_hdr_descs_arr(tx_buff
, &num_entries
, *hdrs
);
1640 tx_crq
.v1
.n_crq_elem
= num_entries
;
1641 tx_buff
->num_entries
= num_entries
;
1642 tx_buff
->indir_arr
[0] = tx_crq
;
1643 tx_buff
->indir_dma
= dma_map_single(dev
, tx_buff
->indir_arr
,
1644 sizeof(tx_buff
->indir_arr
),
1646 if (dma_mapping_error(dev
, tx_buff
->indir_dma
)) {
1647 dev_kfree_skb_any(skb
);
1648 tx_buff
->skb
= NULL
;
1649 if (!firmware_has_feature(FW_FEATURE_CMO
))
1650 dev_err(dev
, "tx: unable to map descriptor array\n");
1656 lpar_rc
= send_subcrq_indirect(adapter
, handle_array
[queue_num
],
1657 (u64
)tx_buff
->indir_dma
,
1659 dma_unmap_single(dev
, tx_buff
->indir_dma
,
1660 sizeof(tx_buff
->indir_arr
), DMA_TO_DEVICE
);
1662 tx_buff
->num_entries
= num_entries
;
1663 lpar_rc
= send_subcrq(adapter
, handle_array
[queue_num
],
1666 if (lpar_rc
!= H_SUCCESS
) {
1667 if (lpar_rc
!= H_CLOSED
&& lpar_rc
!= H_PARAMETER
)
1668 dev_err_ratelimited(dev
, "tx: send failed\n");
1669 dev_kfree_skb_any(skb
);
1670 tx_buff
->skb
= NULL
;
1672 if (lpar_rc
== H_CLOSED
|| adapter
->failover_pending
) {
1673 /* Disable TX and report carrier off if queue is closed
1674 * or pending failover.
1675 * Firmware guarantees that a signal will be sent to the
1676 * driver, triggering a reset or some other action.
1678 netif_tx_stop_all_queues(netdev
);
1679 netif_carrier_off(netdev
);
1688 if (atomic_add_return(num_entries
, &tx_scrq
->used
)
1689 >= adapter
->req_tx_entries_per_subcrq
) {
1690 netdev_dbg(netdev
, "Stopping queue %d\n", queue_num
);
1691 netif_stop_subqueue(netdev
, queue_num
);
1695 tx_bytes
+= skb
->len
;
1696 txq
->trans_start
= jiffies
;
1701 /* roll back consumer index and map array*/
1702 if (tx_pool
->consumer_index
== 0)
1703 tx_pool
->consumer_index
=
1704 tx_pool
->num_buffers
- 1;
1706 tx_pool
->consumer_index
--;
1707 tx_pool
->free_map
[tx_pool
->consumer_index
] = index
;
1709 netdev
->stats
.tx_dropped
+= tx_dropped
;
1710 netdev
->stats
.tx_bytes
+= tx_bytes
;
1711 netdev
->stats
.tx_packets
+= tx_packets
;
1712 adapter
->tx_send_failed
+= tx_send_failed
;
1713 adapter
->tx_map_failed
+= tx_map_failed
;
1714 adapter
->tx_stats_buffers
[queue_num
].packets
+= tx_packets
;
1715 adapter
->tx_stats_buffers
[queue_num
].bytes
+= tx_bytes
;
1716 adapter
->tx_stats_buffers
[queue_num
].dropped_packets
+= tx_dropped
;
1721 static void ibmvnic_set_multi(struct net_device
*netdev
)
1723 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
1724 struct netdev_hw_addr
*ha
;
1725 union ibmvnic_crq crq
;
1727 memset(&crq
, 0, sizeof(crq
));
1728 crq
.request_capability
.first
= IBMVNIC_CRQ_CMD
;
1729 crq
.request_capability
.cmd
= REQUEST_CAPABILITY
;
1731 if (netdev
->flags
& IFF_PROMISC
) {
1732 if (!adapter
->promisc_supported
)
1735 if (netdev
->flags
& IFF_ALLMULTI
) {
1736 /* Accept all multicast */
1737 memset(&crq
, 0, sizeof(crq
));
1738 crq
.multicast_ctrl
.first
= IBMVNIC_CRQ_CMD
;
1739 crq
.multicast_ctrl
.cmd
= MULTICAST_CTRL
;
1740 crq
.multicast_ctrl
.flags
= IBMVNIC_ENABLE_ALL
;
1741 ibmvnic_send_crq(adapter
, &crq
);
1742 } else if (netdev_mc_empty(netdev
)) {
1743 /* Reject all multicast */
1744 memset(&crq
, 0, sizeof(crq
));
1745 crq
.multicast_ctrl
.first
= IBMVNIC_CRQ_CMD
;
1746 crq
.multicast_ctrl
.cmd
= MULTICAST_CTRL
;
1747 crq
.multicast_ctrl
.flags
= IBMVNIC_DISABLE_ALL
;
1748 ibmvnic_send_crq(adapter
, &crq
);
1750 /* Accept one or more multicast(s) */
1751 netdev_for_each_mc_addr(ha
, netdev
) {
1752 memset(&crq
, 0, sizeof(crq
));
1753 crq
.multicast_ctrl
.first
= IBMVNIC_CRQ_CMD
;
1754 crq
.multicast_ctrl
.cmd
= MULTICAST_CTRL
;
1755 crq
.multicast_ctrl
.flags
= IBMVNIC_ENABLE_MC
;
1756 ether_addr_copy(&crq
.multicast_ctrl
.mac_addr
[0],
1758 ibmvnic_send_crq(adapter
, &crq
);
1764 static int __ibmvnic_set_mac(struct net_device
*netdev
, u8
*dev_addr
)
1766 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
1767 union ibmvnic_crq crq
;
1770 if (!is_valid_ether_addr(dev_addr
)) {
1771 rc
= -EADDRNOTAVAIL
;
1775 memset(&crq
, 0, sizeof(crq
));
1776 crq
.change_mac_addr
.first
= IBMVNIC_CRQ_CMD
;
1777 crq
.change_mac_addr
.cmd
= CHANGE_MAC_ADDR
;
1778 ether_addr_copy(&crq
.change_mac_addr
.mac_addr
[0], dev_addr
);
1780 mutex_lock(&adapter
->fw_lock
);
1781 adapter
->fw_done_rc
= 0;
1782 reinit_completion(&adapter
->fw_done
);
1784 rc
= ibmvnic_send_crq(adapter
, &crq
);
1787 mutex_unlock(&adapter
->fw_lock
);
1791 rc
= ibmvnic_wait_for_completion(adapter
, &adapter
->fw_done
, 10000);
1792 /* netdev->dev_addr is changed in handle_change_mac_rsp function */
1793 if (rc
|| adapter
->fw_done_rc
) {
1795 mutex_unlock(&adapter
->fw_lock
);
1798 mutex_unlock(&adapter
->fw_lock
);
1801 ether_addr_copy(adapter
->mac_addr
, netdev
->dev_addr
);
1805 static int ibmvnic_set_mac(struct net_device
*netdev
, void *p
)
1807 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
1808 struct sockaddr
*addr
= p
;
1812 ether_addr_copy(adapter
->mac_addr
, addr
->sa_data
);
1813 if (adapter
->state
!= VNIC_PROBED
)
1814 rc
= __ibmvnic_set_mac(netdev
, addr
->sa_data
);
1820 * do_change_param_reset returns zero if we are able to keep processing reset
1821 * events, or non-zero if we hit a fatal error and must halt.
1823 static int do_change_param_reset(struct ibmvnic_adapter
*adapter
,
1824 struct ibmvnic_rwi
*rwi
,
1827 struct net_device
*netdev
= adapter
->netdev
;
1830 netdev_dbg(adapter
->netdev
, "Change param resetting driver (%d)\n",
1833 netif_carrier_off(netdev
);
1834 adapter
->reset_reason
= rwi
->reset_reason
;
1836 ibmvnic_cleanup(netdev
);
1838 if (reset_state
== VNIC_OPEN
) {
1839 rc
= __ibmvnic_close(netdev
);
1844 release_resources(adapter
);
1845 release_sub_crqs(adapter
, 1);
1846 release_crq_queue(adapter
);
1848 adapter
->state
= VNIC_PROBED
;
1850 rc
= init_crq_queue(adapter
);
1853 netdev_err(adapter
->netdev
,
1854 "Couldn't initialize crq. rc=%d\n", rc
);
1858 rc
= ibmvnic_reset_init(adapter
);
1860 return IBMVNIC_INIT_FAILED
;
1862 /* If the adapter was in PROBE state prior to the reset,
1865 if (reset_state
== VNIC_PROBED
)
1868 rc
= ibmvnic_login(netdev
);
1870 adapter
->state
= reset_state
;
1874 rc
= init_resources(adapter
);
1878 ibmvnic_disable_irqs(adapter
);
1880 adapter
->state
= VNIC_CLOSED
;
1882 if (reset_state
== VNIC_CLOSED
)
1885 rc
= __ibmvnic_open(netdev
);
1887 return IBMVNIC_OPEN_FAILED
;
1889 /* refresh device's multicast list */
1890 ibmvnic_set_multi(netdev
);
1893 for (i
= 0; i
< adapter
->req_rx_queues
; i
++)
1894 napi_schedule(&adapter
->napi
[i
]);
1900 * do_reset returns zero if we are able to keep processing reset events, or
1901 * non-zero if we hit a fatal error and must halt.
1903 static int do_reset(struct ibmvnic_adapter
*adapter
,
1904 struct ibmvnic_rwi
*rwi
, u32 reset_state
)
1906 u64 old_num_rx_queues
, old_num_tx_queues
;
1907 u64 old_num_rx_slots
, old_num_tx_slots
;
1908 struct net_device
*netdev
= adapter
->netdev
;
1911 netdev_dbg(adapter
->netdev
, "Re-setting driver (%d)\n",
1916 netif_carrier_off(netdev
);
1917 adapter
->reset_reason
= rwi
->reset_reason
;
1919 old_num_rx_queues
= adapter
->req_rx_queues
;
1920 old_num_tx_queues
= adapter
->req_tx_queues
;
1921 old_num_rx_slots
= adapter
->req_rx_add_entries_per_subcrq
;
1922 old_num_tx_slots
= adapter
->req_tx_entries_per_subcrq
;
1924 ibmvnic_cleanup(netdev
);
1926 if (reset_state
== VNIC_OPEN
&&
1927 adapter
->reset_reason
!= VNIC_RESET_MOBILITY
&&
1928 adapter
->reset_reason
!= VNIC_RESET_FAILOVER
) {
1929 adapter
->state
= VNIC_CLOSING
;
1931 /* Release the RTNL lock before link state change and
1932 * re-acquire after the link state change to allow
1933 * linkwatch_event to grab the RTNL lock and run during
1937 rc
= set_link_state(adapter
, IBMVNIC_LOGICAL_LNK_DN
);
1942 if (adapter
->state
!= VNIC_CLOSING
) {
1947 adapter
->state
= VNIC_CLOSED
;
1950 if (adapter
->reset_reason
!= VNIC_RESET_NON_FATAL
) {
1951 /* remove the closed state so when we call open it appears
1952 * we are coming from the probed state.
1954 adapter
->state
= VNIC_PROBED
;
1956 if (adapter
->reset_reason
== VNIC_RESET_MOBILITY
) {
1957 rc
= ibmvnic_reenable_crq_queue(adapter
);
1958 release_sub_crqs(adapter
, 1);
1960 rc
= ibmvnic_reset_crq(adapter
);
1962 rc
= vio_enable_interrupts(adapter
->vdev
);
1966 netdev_err(adapter
->netdev
,
1967 "Couldn't initialize crq. rc=%d\n", rc
);
1971 rc
= ibmvnic_reset_init(adapter
);
1973 rc
= IBMVNIC_INIT_FAILED
;
1977 /* If the adapter was in PROBE state prior to the reset,
1980 if (reset_state
== VNIC_PROBED
) {
1985 rc
= ibmvnic_login(netdev
);
1987 adapter
->state
= reset_state
;
1991 if (adapter
->req_rx_queues
!= old_num_rx_queues
||
1992 adapter
->req_tx_queues
!= old_num_tx_queues
||
1993 adapter
->req_rx_add_entries_per_subcrq
!=
1995 adapter
->req_tx_entries_per_subcrq
!=
1997 release_rx_pools(adapter
);
1998 release_tx_pools(adapter
);
1999 release_napi(adapter
);
2000 release_vpd_data(adapter
);
2002 rc
= init_resources(adapter
);
2007 rc
= reset_tx_pools(adapter
);
2011 rc
= reset_rx_pools(adapter
);
2015 ibmvnic_disable_irqs(adapter
);
2017 adapter
->state
= VNIC_CLOSED
;
2019 if (reset_state
== VNIC_CLOSED
) {
2024 rc
= __ibmvnic_open(netdev
);
2026 rc
= IBMVNIC_OPEN_FAILED
;
2030 /* refresh device's multicast list */
2031 ibmvnic_set_multi(netdev
);
2034 for (i
= 0; i
< adapter
->req_rx_queues
; i
++)
2035 napi_schedule(&adapter
->napi
[i
]);
2037 if (adapter
->reset_reason
!= VNIC_RESET_FAILOVER
)
2038 call_netdevice_notifiers(NETDEV_NOTIFY_PEERS
, netdev
);
2048 static int do_hard_reset(struct ibmvnic_adapter
*adapter
,
2049 struct ibmvnic_rwi
*rwi
, u32 reset_state
)
2051 struct net_device
*netdev
= adapter
->netdev
;
2054 netdev_dbg(adapter
->netdev
, "Hard resetting driver (%d)\n",
2057 netif_carrier_off(netdev
);
2058 adapter
->reset_reason
= rwi
->reset_reason
;
2060 ibmvnic_cleanup(netdev
);
2061 release_resources(adapter
);
2062 release_sub_crqs(adapter
, 0);
2063 release_crq_queue(adapter
);
2065 /* remove the closed state so when we call open it appears
2066 * we are coming from the probed state.
2068 adapter
->state
= VNIC_PROBED
;
2070 reinit_completion(&adapter
->init_done
);
2071 rc
= init_crq_queue(adapter
);
2073 netdev_err(adapter
->netdev
,
2074 "Couldn't initialize crq. rc=%d\n", rc
);
2078 rc
= ibmvnic_init(adapter
);
2082 /* If the adapter was in PROBE state prior to the reset,
2085 if (reset_state
== VNIC_PROBED
)
2088 rc
= ibmvnic_login(netdev
);
2090 adapter
->state
= VNIC_PROBED
;
2094 rc
= init_resources(adapter
);
2098 ibmvnic_disable_irqs(adapter
);
2099 adapter
->state
= VNIC_CLOSED
;
2101 if (reset_state
== VNIC_CLOSED
)
2104 rc
= __ibmvnic_open(netdev
);
2106 return IBMVNIC_OPEN_FAILED
;
2111 static struct ibmvnic_rwi
*get_next_rwi(struct ibmvnic_adapter
*adapter
)
2113 struct ibmvnic_rwi
*rwi
;
2114 unsigned long flags
;
2116 spin_lock_irqsave(&adapter
->rwi_lock
, flags
);
2118 if (!list_empty(&adapter
->rwi_list
)) {
2119 rwi
= list_first_entry(&adapter
->rwi_list
, struct ibmvnic_rwi
,
2121 list_del(&rwi
->list
);
2126 spin_unlock_irqrestore(&adapter
->rwi_lock
, flags
);
2130 static void free_all_rwi(struct ibmvnic_adapter
*adapter
)
2132 struct ibmvnic_rwi
*rwi
;
2134 rwi
= get_next_rwi(adapter
);
2137 rwi
= get_next_rwi(adapter
);
2141 static void __ibmvnic_reset(struct work_struct
*work
)
2143 struct ibmvnic_rwi
*rwi
;
2144 struct ibmvnic_adapter
*adapter
;
2145 bool saved_state
= false;
2146 unsigned long flags
;
2150 adapter
= container_of(work
, struct ibmvnic_adapter
, ibmvnic_reset
);
2152 if (test_and_set_bit_lock(0, &adapter
->resetting
)) {
2153 schedule_delayed_work(&adapter
->ibmvnic_delayed_reset
,
2154 IBMVNIC_RESET_DELAY
);
2158 rwi
= get_next_rwi(adapter
);
2160 spin_lock_irqsave(&adapter
->state_lock
, flags
);
2162 if (adapter
->state
== VNIC_REMOVING
||
2163 adapter
->state
== VNIC_REMOVED
) {
2164 spin_unlock_irqrestore(&adapter
->state_lock
, flags
);
2171 reset_state
= adapter
->state
;
2172 adapter
->state
= VNIC_RESETTING
;
2175 spin_unlock_irqrestore(&adapter
->state_lock
, flags
);
2177 if (rwi
->reset_reason
== VNIC_RESET_CHANGE_PARAM
) {
2178 /* CHANGE_PARAM requestor holds rtnl_lock */
2179 rc
= do_change_param_reset(adapter
, rwi
, reset_state
);
2180 } else if (adapter
->force_reset_recovery
) {
2181 /* Transport event occurred during previous reset */
2182 if (adapter
->wait_for_reset
) {
2183 /* Previous was CHANGE_PARAM; caller locked */
2184 adapter
->force_reset_recovery
= false;
2185 rc
= do_hard_reset(adapter
, rwi
, reset_state
);
2188 adapter
->force_reset_recovery
= false;
2189 rc
= do_hard_reset(adapter
, rwi
, reset_state
);
2193 rc
= do_reset(adapter
, rwi
, reset_state
);
2196 if (rc
== IBMVNIC_OPEN_FAILED
) {
2197 if (list_empty(&adapter
->rwi_list
))
2198 adapter
->state
= VNIC_CLOSED
;
2200 adapter
->state
= reset_state
;
2202 } else if (rc
&& rc
!= IBMVNIC_INIT_FAILED
&&
2203 !adapter
->force_reset_recovery
)
2206 rwi
= get_next_rwi(adapter
);
2208 if (rwi
&& (rwi
->reset_reason
== VNIC_RESET_FAILOVER
||
2209 rwi
->reset_reason
== VNIC_RESET_MOBILITY
))
2210 adapter
->force_reset_recovery
= true;
2213 if (adapter
->wait_for_reset
) {
2214 adapter
->reset_done_rc
= rc
;
2215 complete(&adapter
->reset_done
);
2219 netdev_dbg(adapter
->netdev
, "Reset failed\n");
2220 free_all_rwi(adapter
);
2223 clear_bit_unlock(0, &adapter
->resetting
);
2226 static void __ibmvnic_delayed_reset(struct work_struct
*work
)
2228 struct ibmvnic_adapter
*adapter
;
2230 adapter
= container_of(work
, struct ibmvnic_adapter
,
2231 ibmvnic_delayed_reset
.work
);
2232 __ibmvnic_reset(&adapter
->ibmvnic_reset
);
2235 static int ibmvnic_reset(struct ibmvnic_adapter
*adapter
,
2236 enum ibmvnic_reset_reason reason
)
2238 struct list_head
*entry
, *tmp_entry
;
2239 struct ibmvnic_rwi
*rwi
, *tmp
;
2240 struct net_device
*netdev
= adapter
->netdev
;
2241 unsigned long flags
;
2244 if (adapter
->state
== VNIC_REMOVING
||
2245 adapter
->state
== VNIC_REMOVED
||
2246 adapter
->failover_pending
) {
2248 netdev_dbg(netdev
, "Adapter removing or pending failover, skipping reset\n");
2252 if (adapter
->state
== VNIC_PROBING
) {
2253 netdev_warn(netdev
, "Adapter reset during probe\n");
2254 ret
= adapter
->init_done_rc
= EAGAIN
;
2258 spin_lock_irqsave(&adapter
->rwi_lock
, flags
);
2260 list_for_each(entry
, &adapter
->rwi_list
) {
2261 tmp
= list_entry(entry
, struct ibmvnic_rwi
, list
);
2262 if (tmp
->reset_reason
== reason
) {
2263 netdev_dbg(netdev
, "Skipping matching reset\n");
2264 spin_unlock_irqrestore(&adapter
->rwi_lock
, flags
);
2270 rwi
= kzalloc(sizeof(*rwi
), GFP_ATOMIC
);
2272 spin_unlock_irqrestore(&adapter
->rwi_lock
, flags
);
2273 ibmvnic_close(netdev
);
2277 /* if we just received a transport event,
2278 * flush reset queue and process this reset
2280 if (adapter
->force_reset_recovery
&& !list_empty(&adapter
->rwi_list
)) {
2281 list_for_each_safe(entry
, tmp_entry
, &adapter
->rwi_list
)
2284 rwi
->reset_reason
= reason
;
2285 list_add_tail(&rwi
->list
, &adapter
->rwi_list
);
2286 spin_unlock_irqrestore(&adapter
->rwi_lock
, flags
);
2287 netdev_dbg(adapter
->netdev
, "Scheduling reset (reason %d)\n", reason
);
2288 schedule_work(&adapter
->ibmvnic_reset
);
2295 static void ibmvnic_tx_timeout(struct net_device
*dev
, unsigned int txqueue
)
2297 struct ibmvnic_adapter
*adapter
= netdev_priv(dev
);
2299 ibmvnic_reset(adapter
, VNIC_RESET_TIMEOUT
);
2302 static void remove_buff_from_pool(struct ibmvnic_adapter
*adapter
,
2303 struct ibmvnic_rx_buff
*rx_buff
)
2305 struct ibmvnic_rx_pool
*pool
= &adapter
->rx_pool
[rx_buff
->pool_index
];
2307 rx_buff
->skb
= NULL
;
2309 pool
->free_map
[pool
->next_alloc
] = (int)(rx_buff
- pool
->rx_buff
);
2310 pool
->next_alloc
= (pool
->next_alloc
+ 1) % pool
->size
;
2312 atomic_dec(&pool
->available
);
2315 static int ibmvnic_poll(struct napi_struct
*napi
, int budget
)
2317 struct net_device
*netdev
= napi
->dev
;
2318 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2319 int scrq_num
= (int)(napi
- adapter
->napi
);
2320 int frames_processed
= 0;
2323 while (frames_processed
< budget
) {
2324 struct sk_buff
*skb
;
2325 struct ibmvnic_rx_buff
*rx_buff
;
2326 union sub_crq
*next
;
2331 if (unlikely(test_bit(0, &adapter
->resetting
) &&
2332 adapter
->reset_reason
!= VNIC_RESET_NON_FATAL
)) {
2333 enable_scrq_irq(adapter
, adapter
->rx_scrq
[scrq_num
]);
2334 napi_complete_done(napi
, frames_processed
);
2335 return frames_processed
;
2338 if (!pending_scrq(adapter
, adapter
->rx_scrq
[scrq_num
]))
2340 next
= ibmvnic_next_scrq(adapter
, adapter
->rx_scrq
[scrq_num
]);
2342 (struct ibmvnic_rx_buff
*)be64_to_cpu(next
->
2343 rx_comp
.correlator
);
2344 /* do error checking */
2345 if (next
->rx_comp
.rc
) {
2346 netdev_dbg(netdev
, "rx buffer returned with rc %x\n",
2347 be16_to_cpu(next
->rx_comp
.rc
));
2348 /* free the entry */
2349 next
->rx_comp
.first
= 0;
2350 dev_kfree_skb_any(rx_buff
->skb
);
2351 remove_buff_from_pool(adapter
, rx_buff
);
2353 } else if (!rx_buff
->skb
) {
2354 /* free the entry */
2355 next
->rx_comp
.first
= 0;
2356 remove_buff_from_pool(adapter
, rx_buff
);
2360 length
= be32_to_cpu(next
->rx_comp
.len
);
2361 offset
= be16_to_cpu(next
->rx_comp
.off_frame_data
);
2362 flags
= next
->rx_comp
.flags
;
2364 skb_copy_to_linear_data(skb
, rx_buff
->data
+ offset
,
2367 /* VLAN Header has been stripped by the system firmware and
2368 * needs to be inserted by the driver
2370 if (adapter
->rx_vlan_header_insertion
&&
2371 (flags
& IBMVNIC_VLAN_STRIPPED
))
2372 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
),
2373 ntohs(next
->rx_comp
.vlan_tci
));
2375 /* free the entry */
2376 next
->rx_comp
.first
= 0;
2377 remove_buff_from_pool(adapter
, rx_buff
);
2379 skb_put(skb
, length
);
2380 skb
->protocol
= eth_type_trans(skb
, netdev
);
2381 skb_record_rx_queue(skb
, scrq_num
);
2383 if (flags
& IBMVNIC_IP_CHKSUM_GOOD
&&
2384 flags
& IBMVNIC_TCP_UDP_CHKSUM_GOOD
) {
2385 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
2389 napi_gro_receive(napi
, skb
); /* send it up */
2390 netdev
->stats
.rx_packets
++;
2391 netdev
->stats
.rx_bytes
+= length
;
2392 adapter
->rx_stats_buffers
[scrq_num
].packets
++;
2393 adapter
->rx_stats_buffers
[scrq_num
].bytes
+= length
;
2397 if (adapter
->state
!= VNIC_CLOSING
)
2398 replenish_rx_pool(adapter
, &adapter
->rx_pool
[scrq_num
]);
2400 if (frames_processed
< budget
) {
2401 enable_scrq_irq(adapter
, adapter
->rx_scrq
[scrq_num
]);
2402 napi_complete_done(napi
, frames_processed
);
2403 if (pending_scrq(adapter
, adapter
->rx_scrq
[scrq_num
]) &&
2404 napi_reschedule(napi
)) {
2405 disable_scrq_irq(adapter
, adapter
->rx_scrq
[scrq_num
]);
2409 return frames_processed
;
2412 static int wait_for_reset(struct ibmvnic_adapter
*adapter
)
2416 adapter
->fallback
.mtu
= adapter
->req_mtu
;
2417 adapter
->fallback
.rx_queues
= adapter
->req_rx_queues
;
2418 adapter
->fallback
.tx_queues
= adapter
->req_tx_queues
;
2419 adapter
->fallback
.rx_entries
= adapter
->req_rx_add_entries_per_subcrq
;
2420 adapter
->fallback
.tx_entries
= adapter
->req_tx_entries_per_subcrq
;
2422 reinit_completion(&adapter
->reset_done
);
2423 adapter
->wait_for_reset
= true;
2424 rc
= ibmvnic_reset(adapter
, VNIC_RESET_CHANGE_PARAM
);
2430 rc
= ibmvnic_wait_for_completion(adapter
, &adapter
->reset_done
, 60000);
2437 if (adapter
->reset_done_rc
) {
2439 adapter
->desired
.mtu
= adapter
->fallback
.mtu
;
2440 adapter
->desired
.rx_queues
= adapter
->fallback
.rx_queues
;
2441 adapter
->desired
.tx_queues
= adapter
->fallback
.tx_queues
;
2442 adapter
->desired
.rx_entries
= adapter
->fallback
.rx_entries
;
2443 adapter
->desired
.tx_entries
= adapter
->fallback
.tx_entries
;
2445 reinit_completion(&adapter
->reset_done
);
2446 adapter
->wait_for_reset
= true;
2447 rc
= ibmvnic_reset(adapter
, VNIC_RESET_CHANGE_PARAM
);
2452 rc
= ibmvnic_wait_for_completion(adapter
, &adapter
->reset_done
,
2460 adapter
->wait_for_reset
= false;
2465 static int ibmvnic_change_mtu(struct net_device
*netdev
, int new_mtu
)
2467 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2469 adapter
->desired
.mtu
= new_mtu
+ ETH_HLEN
;
2471 return wait_for_reset(adapter
);
2474 static netdev_features_t
ibmvnic_features_check(struct sk_buff
*skb
,
2475 struct net_device
*dev
,
2476 netdev_features_t features
)
2478 /* Some backing hardware adapters can not
2479 * handle packets with a MSS less than 224
2480 * or with only one segment.
2482 if (skb_is_gso(skb
)) {
2483 if (skb_shinfo(skb
)->gso_size
< 224 ||
2484 skb_shinfo(skb
)->gso_segs
== 1)
2485 features
&= ~NETIF_F_GSO_MASK
;
2491 static const struct net_device_ops ibmvnic_netdev_ops
= {
2492 .ndo_open
= ibmvnic_open
,
2493 .ndo_stop
= ibmvnic_close
,
2494 .ndo_start_xmit
= ibmvnic_xmit
,
2495 .ndo_set_rx_mode
= ibmvnic_set_multi
,
2496 .ndo_set_mac_address
= ibmvnic_set_mac
,
2497 .ndo_validate_addr
= eth_validate_addr
,
2498 .ndo_tx_timeout
= ibmvnic_tx_timeout
,
2499 .ndo_change_mtu
= ibmvnic_change_mtu
,
2500 .ndo_features_check
= ibmvnic_features_check
,
2503 /* ethtool functions */
2505 static int ibmvnic_get_link_ksettings(struct net_device
*netdev
,
2506 struct ethtool_link_ksettings
*cmd
)
2508 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2511 rc
= send_query_phys_parms(adapter
);
2513 adapter
->speed
= SPEED_UNKNOWN
;
2514 adapter
->duplex
= DUPLEX_UNKNOWN
;
2516 cmd
->base
.speed
= adapter
->speed
;
2517 cmd
->base
.duplex
= adapter
->duplex
;
2518 cmd
->base
.port
= PORT_FIBRE
;
2519 cmd
->base
.phy_address
= 0;
2520 cmd
->base
.autoneg
= AUTONEG_ENABLE
;
2525 static void ibmvnic_get_drvinfo(struct net_device
*netdev
,
2526 struct ethtool_drvinfo
*info
)
2528 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2530 strlcpy(info
->driver
, ibmvnic_driver_name
, sizeof(info
->driver
));
2531 strlcpy(info
->version
, IBMVNIC_DRIVER_VERSION
, sizeof(info
->version
));
2532 strlcpy(info
->fw_version
, adapter
->fw_version
,
2533 sizeof(info
->fw_version
));
2536 static u32
ibmvnic_get_msglevel(struct net_device
*netdev
)
2538 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2540 return adapter
->msg_enable
;
2543 static void ibmvnic_set_msglevel(struct net_device
*netdev
, u32 data
)
2545 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2547 adapter
->msg_enable
= data
;
2550 static u32
ibmvnic_get_link(struct net_device
*netdev
)
2552 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2554 /* Don't need to send a query because we request a logical link up at
2555 * init and then we wait for link state indications
2557 return adapter
->logical_link_state
;
2560 static void ibmvnic_get_ringparam(struct net_device
*netdev
,
2561 struct ethtool_ringparam
*ring
)
2563 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2565 if (adapter
->priv_flags
& IBMVNIC_USE_SERVER_MAXES
) {
2566 ring
->rx_max_pending
= adapter
->max_rx_add_entries_per_subcrq
;
2567 ring
->tx_max_pending
= adapter
->max_tx_entries_per_subcrq
;
2569 ring
->rx_max_pending
= IBMVNIC_MAX_QUEUE_SZ
;
2570 ring
->tx_max_pending
= IBMVNIC_MAX_QUEUE_SZ
;
2572 ring
->rx_mini_max_pending
= 0;
2573 ring
->rx_jumbo_max_pending
= 0;
2574 ring
->rx_pending
= adapter
->req_rx_add_entries_per_subcrq
;
2575 ring
->tx_pending
= adapter
->req_tx_entries_per_subcrq
;
2576 ring
->rx_mini_pending
= 0;
2577 ring
->rx_jumbo_pending
= 0;
2580 static int ibmvnic_set_ringparam(struct net_device
*netdev
,
2581 struct ethtool_ringparam
*ring
)
2583 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2587 adapter
->desired
.rx_entries
= ring
->rx_pending
;
2588 adapter
->desired
.tx_entries
= ring
->tx_pending
;
2590 ret
= wait_for_reset(adapter
);
2593 (adapter
->req_rx_add_entries_per_subcrq
!= ring
->rx_pending
||
2594 adapter
->req_tx_entries_per_subcrq
!= ring
->tx_pending
))
2596 "Could not match full ringsize request. Requested: RX %d, TX %d; Allowed: RX %llu, TX %llu\n",
2597 ring
->rx_pending
, ring
->tx_pending
,
2598 adapter
->req_rx_add_entries_per_subcrq
,
2599 adapter
->req_tx_entries_per_subcrq
);
2603 static void ibmvnic_get_channels(struct net_device
*netdev
,
2604 struct ethtool_channels
*channels
)
2606 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2608 if (adapter
->priv_flags
& IBMVNIC_USE_SERVER_MAXES
) {
2609 channels
->max_rx
= adapter
->max_rx_queues
;
2610 channels
->max_tx
= adapter
->max_tx_queues
;
2612 channels
->max_rx
= IBMVNIC_MAX_QUEUES
;
2613 channels
->max_tx
= IBMVNIC_MAX_QUEUES
;
2616 channels
->max_other
= 0;
2617 channels
->max_combined
= 0;
2618 channels
->rx_count
= adapter
->req_rx_queues
;
2619 channels
->tx_count
= adapter
->req_tx_queues
;
2620 channels
->other_count
= 0;
2621 channels
->combined_count
= 0;
2624 static int ibmvnic_set_channels(struct net_device
*netdev
,
2625 struct ethtool_channels
*channels
)
2627 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2631 adapter
->desired
.rx_queues
= channels
->rx_count
;
2632 adapter
->desired
.tx_queues
= channels
->tx_count
;
2634 ret
= wait_for_reset(adapter
);
2637 (adapter
->req_rx_queues
!= channels
->rx_count
||
2638 adapter
->req_tx_queues
!= channels
->tx_count
))
2640 "Could not match full channels request. Requested: RX %d, TX %d; Allowed: RX %llu, TX %llu\n",
2641 channels
->rx_count
, channels
->tx_count
,
2642 adapter
->req_rx_queues
, adapter
->req_tx_queues
);
2647 static void ibmvnic_get_strings(struct net_device
*dev
, u32 stringset
, u8
*data
)
2649 struct ibmvnic_adapter
*adapter
= netdev_priv(dev
);
2652 switch (stringset
) {
2654 for (i
= 0; i
< ARRAY_SIZE(ibmvnic_stats
);
2655 i
++, data
+= ETH_GSTRING_LEN
)
2656 memcpy(data
, ibmvnic_stats
[i
].name
, ETH_GSTRING_LEN
);
2658 for (i
= 0; i
< adapter
->req_tx_queues
; i
++) {
2659 snprintf(data
, ETH_GSTRING_LEN
, "tx%d_packets", i
);
2660 data
+= ETH_GSTRING_LEN
;
2662 snprintf(data
, ETH_GSTRING_LEN
, "tx%d_bytes", i
);
2663 data
+= ETH_GSTRING_LEN
;
2665 snprintf(data
, ETH_GSTRING_LEN
,
2666 "tx%d_dropped_packets", i
);
2667 data
+= ETH_GSTRING_LEN
;
2670 for (i
= 0; i
< adapter
->req_rx_queues
; i
++) {
2671 snprintf(data
, ETH_GSTRING_LEN
, "rx%d_packets", i
);
2672 data
+= ETH_GSTRING_LEN
;
2674 snprintf(data
, ETH_GSTRING_LEN
, "rx%d_bytes", i
);
2675 data
+= ETH_GSTRING_LEN
;
2677 snprintf(data
, ETH_GSTRING_LEN
, "rx%d_interrupts", i
);
2678 data
+= ETH_GSTRING_LEN
;
2682 case ETH_SS_PRIV_FLAGS
:
2683 for (i
= 0; i
< ARRAY_SIZE(ibmvnic_priv_flags
); i
++)
2684 strcpy(data
+ i
* ETH_GSTRING_LEN
,
2685 ibmvnic_priv_flags
[i
]);
2692 static int ibmvnic_get_sset_count(struct net_device
*dev
, int sset
)
2694 struct ibmvnic_adapter
*adapter
= netdev_priv(dev
);
2698 return ARRAY_SIZE(ibmvnic_stats
) +
2699 adapter
->req_tx_queues
* NUM_TX_STATS
+
2700 adapter
->req_rx_queues
* NUM_RX_STATS
;
2701 case ETH_SS_PRIV_FLAGS
:
2702 return ARRAY_SIZE(ibmvnic_priv_flags
);
2708 static void ibmvnic_get_ethtool_stats(struct net_device
*dev
,
2709 struct ethtool_stats
*stats
, u64
*data
)
2711 struct ibmvnic_adapter
*adapter
= netdev_priv(dev
);
2712 union ibmvnic_crq crq
;
2716 memset(&crq
, 0, sizeof(crq
));
2717 crq
.request_statistics
.first
= IBMVNIC_CRQ_CMD
;
2718 crq
.request_statistics
.cmd
= REQUEST_STATISTICS
;
2719 crq
.request_statistics
.ioba
= cpu_to_be32(adapter
->stats_token
);
2720 crq
.request_statistics
.len
=
2721 cpu_to_be32(sizeof(struct ibmvnic_statistics
));
2723 /* Wait for data to be written */
2724 reinit_completion(&adapter
->stats_done
);
2725 rc
= ibmvnic_send_crq(adapter
, &crq
);
2728 rc
= ibmvnic_wait_for_completion(adapter
, &adapter
->stats_done
, 10000);
2732 for (i
= 0; i
< ARRAY_SIZE(ibmvnic_stats
); i
++)
2733 data
[i
] = be64_to_cpu(IBMVNIC_GET_STAT(adapter
,
2734 ibmvnic_stats
[i
].offset
));
2736 for (j
= 0; j
< adapter
->req_tx_queues
; j
++) {
2737 data
[i
] = adapter
->tx_stats_buffers
[j
].packets
;
2739 data
[i
] = adapter
->tx_stats_buffers
[j
].bytes
;
2741 data
[i
] = adapter
->tx_stats_buffers
[j
].dropped_packets
;
2745 for (j
= 0; j
< adapter
->req_rx_queues
; j
++) {
2746 data
[i
] = adapter
->rx_stats_buffers
[j
].packets
;
2748 data
[i
] = adapter
->rx_stats_buffers
[j
].bytes
;
2750 data
[i
] = adapter
->rx_stats_buffers
[j
].interrupts
;
2755 static u32
ibmvnic_get_priv_flags(struct net_device
*netdev
)
2757 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2759 return adapter
->priv_flags
;
2762 static int ibmvnic_set_priv_flags(struct net_device
*netdev
, u32 flags
)
2764 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
2765 bool which_maxes
= !!(flags
& IBMVNIC_USE_SERVER_MAXES
);
2768 adapter
->priv_flags
|= IBMVNIC_USE_SERVER_MAXES
;
2770 adapter
->priv_flags
&= ~IBMVNIC_USE_SERVER_MAXES
;
2774 static const struct ethtool_ops ibmvnic_ethtool_ops
= {
2775 .get_drvinfo
= ibmvnic_get_drvinfo
,
2776 .get_msglevel
= ibmvnic_get_msglevel
,
2777 .set_msglevel
= ibmvnic_set_msglevel
,
2778 .get_link
= ibmvnic_get_link
,
2779 .get_ringparam
= ibmvnic_get_ringparam
,
2780 .set_ringparam
= ibmvnic_set_ringparam
,
2781 .get_channels
= ibmvnic_get_channels
,
2782 .set_channels
= ibmvnic_set_channels
,
2783 .get_strings
= ibmvnic_get_strings
,
2784 .get_sset_count
= ibmvnic_get_sset_count
,
2785 .get_ethtool_stats
= ibmvnic_get_ethtool_stats
,
2786 .get_link_ksettings
= ibmvnic_get_link_ksettings
,
2787 .get_priv_flags
= ibmvnic_get_priv_flags
,
2788 .set_priv_flags
= ibmvnic_set_priv_flags
,
2791 /* Routines for managing CRQs/sCRQs */
2793 static int reset_one_sub_crq_queue(struct ibmvnic_adapter
*adapter
,
2794 struct ibmvnic_sub_crq_queue
*scrq
)
2799 free_irq(scrq
->irq
, scrq
);
2800 irq_dispose_mapping(scrq
->irq
);
2804 memset(scrq
->msgs
, 0, 4 * PAGE_SIZE
);
2805 atomic_set(&scrq
->used
, 0);
2808 rc
= h_reg_sub_crq(adapter
->vdev
->unit_address
, scrq
->msg_token
,
2809 4 * PAGE_SIZE
, &scrq
->crq_num
, &scrq
->hw_irq
);
2813 static int reset_sub_crq_queues(struct ibmvnic_adapter
*adapter
)
2817 for (i
= 0; i
< adapter
->req_tx_queues
; i
++) {
2818 netdev_dbg(adapter
->netdev
, "Re-setting tx_scrq[%d]\n", i
);
2819 rc
= reset_one_sub_crq_queue(adapter
, adapter
->tx_scrq
[i
]);
2824 for (i
= 0; i
< adapter
->req_rx_queues
; i
++) {
2825 netdev_dbg(adapter
->netdev
, "Re-setting rx_scrq[%d]\n", i
);
2826 rc
= reset_one_sub_crq_queue(adapter
, adapter
->rx_scrq
[i
]);
2834 static void release_sub_crq_queue(struct ibmvnic_adapter
*adapter
,
2835 struct ibmvnic_sub_crq_queue
*scrq
,
2838 struct device
*dev
= &adapter
->vdev
->dev
;
2841 netdev_dbg(adapter
->netdev
, "Releasing sub-CRQ\n");
2844 /* Close the sub-crqs */
2846 rc
= plpar_hcall_norets(H_FREE_SUB_CRQ
,
2847 adapter
->vdev
->unit_address
,
2849 } while (rc
== H_BUSY
|| H_IS_LONG_BUSY(rc
));
2852 netdev_err(adapter
->netdev
,
2853 "Failed to release sub-CRQ %16lx, rc = %ld\n",
2858 dma_unmap_single(dev
, scrq
->msg_token
, 4 * PAGE_SIZE
,
2860 free_pages((unsigned long)scrq
->msgs
, 2);
2864 static struct ibmvnic_sub_crq_queue
*init_sub_crq_queue(struct ibmvnic_adapter
2867 struct device
*dev
= &adapter
->vdev
->dev
;
2868 struct ibmvnic_sub_crq_queue
*scrq
;
2871 scrq
= kzalloc(sizeof(*scrq
), GFP_KERNEL
);
2876 (union sub_crq
*)__get_free_pages(GFP_KERNEL
| __GFP_ZERO
, 2);
2878 dev_warn(dev
, "Couldn't allocate crq queue messages page\n");
2879 goto zero_page_failed
;
2882 scrq
->msg_token
= dma_map_single(dev
, scrq
->msgs
, 4 * PAGE_SIZE
,
2884 if (dma_mapping_error(dev
, scrq
->msg_token
)) {
2885 dev_warn(dev
, "Couldn't map crq queue messages page\n");
2889 rc
= h_reg_sub_crq(adapter
->vdev
->unit_address
, scrq
->msg_token
,
2890 4 * PAGE_SIZE
, &scrq
->crq_num
, &scrq
->hw_irq
);
2892 if (rc
== H_RESOURCE
)
2893 rc
= ibmvnic_reset_crq(adapter
);
2895 if (rc
== H_CLOSED
) {
2896 dev_warn(dev
, "Partner adapter not ready, waiting.\n");
2898 dev_warn(dev
, "Error %d registering sub-crq\n", rc
);
2902 scrq
->adapter
= adapter
;
2903 scrq
->size
= 4 * PAGE_SIZE
/ sizeof(*scrq
->msgs
);
2904 spin_lock_init(&scrq
->lock
);
2906 netdev_dbg(adapter
->netdev
,
2907 "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n",
2908 scrq
->crq_num
, scrq
->hw_irq
, scrq
->irq
);
2913 dma_unmap_single(dev
, scrq
->msg_token
, 4 * PAGE_SIZE
,
2916 free_pages((unsigned long)scrq
->msgs
, 2);
2923 static void release_sub_crqs(struct ibmvnic_adapter
*adapter
, bool do_h_free
)
2927 if (adapter
->tx_scrq
) {
2928 for (i
= 0; i
< adapter
->num_active_tx_scrqs
; i
++) {
2929 if (!adapter
->tx_scrq
[i
])
2932 netdev_dbg(adapter
->netdev
, "Releasing tx_scrq[%d]\n",
2934 if (adapter
->tx_scrq
[i
]->irq
) {
2935 free_irq(adapter
->tx_scrq
[i
]->irq
,
2936 adapter
->tx_scrq
[i
]);
2937 irq_dispose_mapping(adapter
->tx_scrq
[i
]->irq
);
2938 adapter
->tx_scrq
[i
]->irq
= 0;
2941 release_sub_crq_queue(adapter
, adapter
->tx_scrq
[i
],
2945 kfree(adapter
->tx_scrq
);
2946 adapter
->tx_scrq
= NULL
;
2947 adapter
->num_active_tx_scrqs
= 0;
2950 if (adapter
->rx_scrq
) {
2951 for (i
= 0; i
< adapter
->num_active_rx_scrqs
; i
++) {
2952 if (!adapter
->rx_scrq
[i
])
2955 netdev_dbg(adapter
->netdev
, "Releasing rx_scrq[%d]\n",
2957 if (adapter
->rx_scrq
[i
]->irq
) {
2958 free_irq(adapter
->rx_scrq
[i
]->irq
,
2959 adapter
->rx_scrq
[i
]);
2960 irq_dispose_mapping(adapter
->rx_scrq
[i
]->irq
);
2961 adapter
->rx_scrq
[i
]->irq
= 0;
2964 release_sub_crq_queue(adapter
, adapter
->rx_scrq
[i
],
2968 kfree(adapter
->rx_scrq
);
2969 adapter
->rx_scrq
= NULL
;
2970 adapter
->num_active_rx_scrqs
= 0;
2974 static int disable_scrq_irq(struct ibmvnic_adapter
*adapter
,
2975 struct ibmvnic_sub_crq_queue
*scrq
)
2977 struct device
*dev
= &adapter
->vdev
->dev
;
2980 rc
= plpar_hcall_norets(H_VIOCTL
, adapter
->vdev
->unit_address
,
2981 H_DISABLE_VIO_INTERRUPT
, scrq
->hw_irq
, 0, 0);
2983 dev_err(dev
, "Couldn't disable scrq irq 0x%lx. rc=%ld\n",
2988 static int enable_scrq_irq(struct ibmvnic_adapter
*adapter
,
2989 struct ibmvnic_sub_crq_queue
*scrq
)
2991 struct device
*dev
= &adapter
->vdev
->dev
;
2994 if (scrq
->hw_irq
> 0x100000000ULL
) {
2995 dev_err(dev
, "bad hw_irq = %lx\n", scrq
->hw_irq
);
2999 if (test_bit(0, &adapter
->resetting
) &&
3000 adapter
->reset_reason
== VNIC_RESET_MOBILITY
) {
3001 u64 val
= (0xff000000) | scrq
->hw_irq
;
3003 rc
= plpar_hcall_norets(H_EOI
, val
);
3004 /* H_EOI would fail with rc = H_FUNCTION when running
3005 * in XIVE mode which is expected, but not an error.
3007 if (rc
&& (rc
!= H_FUNCTION
))
3008 dev_err(dev
, "H_EOI FAILED irq 0x%llx. rc=%ld\n",
3012 rc
= plpar_hcall_norets(H_VIOCTL
, adapter
->vdev
->unit_address
,
3013 H_ENABLE_VIO_INTERRUPT
, scrq
->hw_irq
, 0, 0);
3015 dev_err(dev
, "Couldn't enable scrq irq 0x%lx. rc=%ld\n",
3020 static int ibmvnic_complete_tx(struct ibmvnic_adapter
*adapter
,
3021 struct ibmvnic_sub_crq_queue
*scrq
)
3023 struct device
*dev
= &adapter
->vdev
->dev
;
3024 struct ibmvnic_tx_pool
*tx_pool
;
3025 struct ibmvnic_tx_buff
*txbuff
;
3026 union sub_crq
*next
;
3031 while (pending_scrq(adapter
, scrq
)) {
3032 unsigned int pool
= scrq
->pool_index
;
3033 int num_entries
= 0;
3035 next
= ibmvnic_next_scrq(adapter
, scrq
);
3036 for (i
= 0; i
< next
->tx_comp
.num_comps
; i
++) {
3037 if (next
->tx_comp
.rcs
[i
]) {
3038 dev_err(dev
, "tx error %x\n",
3039 next
->tx_comp
.rcs
[i
]);
3042 index
= be32_to_cpu(next
->tx_comp
.correlators
[i
]);
3043 if (index
& IBMVNIC_TSO_POOL_MASK
) {
3044 tx_pool
= &adapter
->tso_pool
[pool
];
3045 index
&= ~IBMVNIC_TSO_POOL_MASK
;
3047 tx_pool
= &adapter
->tx_pool
[pool
];
3050 txbuff
= &tx_pool
->tx_buff
[index
];
3052 for (j
= 0; j
< IBMVNIC_MAX_FRAGS_PER_CRQ
; j
++) {
3053 if (!txbuff
->data_dma
[j
])
3056 txbuff
->data_dma
[j
] = 0;
3059 if (txbuff
->last_frag
) {
3060 dev_kfree_skb_any(txbuff
->skb
);
3064 num_entries
+= txbuff
->num_entries
;
3066 tx_pool
->free_map
[tx_pool
->producer_index
] = index
;
3067 tx_pool
->producer_index
=
3068 (tx_pool
->producer_index
+ 1) %
3069 tx_pool
->num_buffers
;
3071 /* remove tx_comp scrq*/
3072 next
->tx_comp
.first
= 0;
3074 if (atomic_sub_return(num_entries
, &scrq
->used
) <=
3075 (adapter
->req_tx_entries_per_subcrq
/ 2) &&
3076 __netif_subqueue_stopped(adapter
->netdev
,
3077 scrq
->pool_index
)) {
3078 netif_wake_subqueue(adapter
->netdev
, scrq
->pool_index
);
3079 netdev_dbg(adapter
->netdev
, "Started queue %d\n",
3084 enable_scrq_irq(adapter
, scrq
);
3086 if (pending_scrq(adapter
, scrq
)) {
3087 disable_scrq_irq(adapter
, scrq
);
3094 static irqreturn_t
ibmvnic_interrupt_tx(int irq
, void *instance
)
3096 struct ibmvnic_sub_crq_queue
*scrq
= instance
;
3097 struct ibmvnic_adapter
*adapter
= scrq
->adapter
;
3099 disable_scrq_irq(adapter
, scrq
);
3100 ibmvnic_complete_tx(adapter
, scrq
);
3105 static irqreturn_t
ibmvnic_interrupt_rx(int irq
, void *instance
)
3107 struct ibmvnic_sub_crq_queue
*scrq
= instance
;
3108 struct ibmvnic_adapter
*adapter
= scrq
->adapter
;
3110 /* When booting a kdump kernel we can hit pending interrupts
3111 * prior to completing driver initialization.
3113 if (unlikely(adapter
->state
!= VNIC_OPEN
))
3116 adapter
->rx_stats_buffers
[scrq
->scrq_num
].interrupts
++;
3118 if (napi_schedule_prep(&adapter
->napi
[scrq
->scrq_num
])) {
3119 disable_scrq_irq(adapter
, scrq
);
3120 __napi_schedule(&adapter
->napi
[scrq
->scrq_num
]);
3126 static int init_sub_crq_irqs(struct ibmvnic_adapter
*adapter
)
3128 struct device
*dev
= &adapter
->vdev
->dev
;
3129 struct ibmvnic_sub_crq_queue
*scrq
;
3133 for (i
= 0; i
< adapter
->req_tx_queues
; i
++) {
3134 netdev_dbg(adapter
->netdev
, "Initializing tx_scrq[%d] irq\n",
3136 scrq
= adapter
->tx_scrq
[i
];
3137 scrq
->irq
= irq_create_mapping(NULL
, scrq
->hw_irq
);
3141 dev_err(dev
, "Error mapping irq\n");
3142 goto req_tx_irq_failed
;
3145 snprintf(scrq
->name
, sizeof(scrq
->name
), "ibmvnic-%x-tx%d",
3146 adapter
->vdev
->unit_address
, i
);
3147 rc
= request_irq(scrq
->irq
, ibmvnic_interrupt_tx
,
3148 0, scrq
->name
, scrq
);
3151 dev_err(dev
, "Couldn't register tx irq 0x%x. rc=%d\n",
3153 irq_dispose_mapping(scrq
->irq
);
3154 goto req_tx_irq_failed
;
3158 for (i
= 0; i
< adapter
->req_rx_queues
; i
++) {
3159 netdev_dbg(adapter
->netdev
, "Initializing rx_scrq[%d] irq\n",
3161 scrq
= adapter
->rx_scrq
[i
];
3162 scrq
->irq
= irq_create_mapping(NULL
, scrq
->hw_irq
);
3165 dev_err(dev
, "Error mapping irq\n");
3166 goto req_rx_irq_failed
;
3168 snprintf(scrq
->name
, sizeof(scrq
->name
), "ibmvnic-%x-rx%d",
3169 adapter
->vdev
->unit_address
, i
);
3170 rc
= request_irq(scrq
->irq
, ibmvnic_interrupt_rx
,
3171 0, scrq
->name
, scrq
);
3173 dev_err(dev
, "Couldn't register rx irq 0x%x. rc=%d\n",
3175 irq_dispose_mapping(scrq
->irq
);
3176 goto req_rx_irq_failed
;
3182 for (j
= 0; j
< i
; j
++) {
3183 free_irq(adapter
->rx_scrq
[j
]->irq
, adapter
->rx_scrq
[j
]);
3184 irq_dispose_mapping(adapter
->rx_scrq
[j
]->irq
);
3186 i
= adapter
->req_tx_queues
;
3188 for (j
= 0; j
< i
; j
++) {
3189 free_irq(adapter
->tx_scrq
[j
]->irq
, adapter
->tx_scrq
[j
]);
3190 irq_dispose_mapping(adapter
->rx_scrq
[j
]->irq
);
3192 release_sub_crqs(adapter
, 1);
3196 static int init_sub_crqs(struct ibmvnic_adapter
*adapter
)
3198 struct device
*dev
= &adapter
->vdev
->dev
;
3199 struct ibmvnic_sub_crq_queue
**allqueues
;
3200 int registered_queues
= 0;
3205 total_queues
= adapter
->req_tx_queues
+ adapter
->req_rx_queues
;
3207 allqueues
= kcalloc(total_queues
, sizeof(*allqueues
), GFP_KERNEL
);
3211 for (i
= 0; i
< total_queues
; i
++) {
3212 allqueues
[i
] = init_sub_crq_queue(adapter
);
3213 if (!allqueues
[i
]) {
3214 dev_warn(dev
, "Couldn't allocate all sub-crqs\n");
3217 registered_queues
++;
3220 /* Make sure we were able to register the minimum number of queues */
3221 if (registered_queues
<
3222 adapter
->min_tx_queues
+ adapter
->min_rx_queues
) {
3223 dev_err(dev
, "Fatal: Couldn't init min number of sub-crqs\n");
3227 /* Distribute the failed allocated queues*/
3228 for (i
= 0; i
< total_queues
- registered_queues
+ more
; i
++) {
3229 netdev_dbg(adapter
->netdev
, "Reducing number of queues\n");
3232 if (adapter
->req_rx_queues
> adapter
->min_rx_queues
)
3233 adapter
->req_rx_queues
--;
3238 if (adapter
->req_tx_queues
> adapter
->min_tx_queues
)
3239 adapter
->req_tx_queues
--;
3246 adapter
->tx_scrq
= kcalloc(adapter
->req_tx_queues
,
3247 sizeof(*adapter
->tx_scrq
), GFP_KERNEL
);
3248 if (!adapter
->tx_scrq
)
3251 for (i
= 0; i
< adapter
->req_tx_queues
; i
++) {
3252 adapter
->tx_scrq
[i
] = allqueues
[i
];
3253 adapter
->tx_scrq
[i
]->pool_index
= i
;
3254 adapter
->num_active_tx_scrqs
++;
3257 adapter
->rx_scrq
= kcalloc(adapter
->req_rx_queues
,
3258 sizeof(*adapter
->rx_scrq
), GFP_KERNEL
);
3259 if (!adapter
->rx_scrq
)
3262 for (i
= 0; i
< adapter
->req_rx_queues
; i
++) {
3263 adapter
->rx_scrq
[i
] = allqueues
[i
+ adapter
->req_tx_queues
];
3264 adapter
->rx_scrq
[i
]->scrq_num
= i
;
3265 adapter
->num_active_rx_scrqs
++;
3272 kfree(adapter
->tx_scrq
);
3273 adapter
->tx_scrq
= NULL
;
3275 for (i
= 0; i
< registered_queues
; i
++)
3276 release_sub_crq_queue(adapter
, allqueues
[i
], 1);
3281 static void ibmvnic_send_req_caps(struct ibmvnic_adapter
*adapter
, int retry
)
3283 struct device
*dev
= &adapter
->vdev
->dev
;
3284 union ibmvnic_crq crq
;
3288 /* Sub-CRQ entries are 32 byte long */
3289 int entries_page
= 4 * PAGE_SIZE
/ (sizeof(u64
) * 4);
3291 if (adapter
->min_tx_entries_per_subcrq
> entries_page
||
3292 adapter
->min_rx_add_entries_per_subcrq
> entries_page
) {
3293 dev_err(dev
, "Fatal, invalid entries per sub-crq\n");
3297 if (adapter
->desired
.mtu
)
3298 adapter
->req_mtu
= adapter
->desired
.mtu
;
3300 adapter
->req_mtu
= adapter
->netdev
->mtu
+ ETH_HLEN
;
3302 if (!adapter
->desired
.tx_entries
)
3303 adapter
->desired
.tx_entries
=
3304 adapter
->max_tx_entries_per_subcrq
;
3305 if (!adapter
->desired
.rx_entries
)
3306 adapter
->desired
.rx_entries
=
3307 adapter
->max_rx_add_entries_per_subcrq
;
3309 max_entries
= IBMVNIC_MAX_LTB_SIZE
/
3310 (adapter
->req_mtu
+ IBMVNIC_BUFFER_HLEN
);
3312 if ((adapter
->req_mtu
+ IBMVNIC_BUFFER_HLEN
) *
3313 adapter
->desired
.tx_entries
> IBMVNIC_MAX_LTB_SIZE
) {
3314 adapter
->desired
.tx_entries
= max_entries
;
3317 if ((adapter
->req_mtu
+ IBMVNIC_BUFFER_HLEN
) *
3318 adapter
->desired
.rx_entries
> IBMVNIC_MAX_LTB_SIZE
) {
3319 adapter
->desired
.rx_entries
= max_entries
;
3322 if (adapter
->desired
.tx_entries
)
3323 adapter
->req_tx_entries_per_subcrq
=
3324 adapter
->desired
.tx_entries
;
3326 adapter
->req_tx_entries_per_subcrq
=
3327 adapter
->max_tx_entries_per_subcrq
;
3329 if (adapter
->desired
.rx_entries
)
3330 adapter
->req_rx_add_entries_per_subcrq
=
3331 adapter
->desired
.rx_entries
;
3333 adapter
->req_rx_add_entries_per_subcrq
=
3334 adapter
->max_rx_add_entries_per_subcrq
;
3336 if (adapter
->desired
.tx_queues
)
3337 adapter
->req_tx_queues
=
3338 adapter
->desired
.tx_queues
;
3340 adapter
->req_tx_queues
=
3341 adapter
->opt_tx_comp_sub_queues
;
3343 if (adapter
->desired
.rx_queues
)
3344 adapter
->req_rx_queues
=
3345 adapter
->desired
.rx_queues
;
3347 adapter
->req_rx_queues
=
3348 adapter
->opt_rx_comp_queues
;
3350 adapter
->req_rx_add_queues
= adapter
->max_rx_add_queues
;
3353 memset(&crq
, 0, sizeof(crq
));
3354 crq
.request_capability
.first
= IBMVNIC_CRQ_CMD
;
3355 crq
.request_capability
.cmd
= REQUEST_CAPABILITY
;
3357 crq
.request_capability
.capability
= cpu_to_be16(REQ_TX_QUEUES
);
3358 crq
.request_capability
.number
= cpu_to_be64(adapter
->req_tx_queues
);
3359 atomic_inc(&adapter
->running_cap_crqs
);
3360 ibmvnic_send_crq(adapter
, &crq
);
3362 crq
.request_capability
.capability
= cpu_to_be16(REQ_RX_QUEUES
);
3363 crq
.request_capability
.number
= cpu_to_be64(adapter
->req_rx_queues
);
3364 atomic_inc(&adapter
->running_cap_crqs
);
3365 ibmvnic_send_crq(adapter
, &crq
);
3367 crq
.request_capability
.capability
= cpu_to_be16(REQ_RX_ADD_QUEUES
);
3368 crq
.request_capability
.number
= cpu_to_be64(adapter
->req_rx_add_queues
);
3369 atomic_inc(&adapter
->running_cap_crqs
);
3370 ibmvnic_send_crq(adapter
, &crq
);
3372 crq
.request_capability
.capability
=
3373 cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ
);
3374 crq
.request_capability
.number
=
3375 cpu_to_be64(adapter
->req_tx_entries_per_subcrq
);
3376 atomic_inc(&adapter
->running_cap_crqs
);
3377 ibmvnic_send_crq(adapter
, &crq
);
3379 crq
.request_capability
.capability
=
3380 cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ
);
3381 crq
.request_capability
.number
=
3382 cpu_to_be64(adapter
->req_rx_add_entries_per_subcrq
);
3383 atomic_inc(&adapter
->running_cap_crqs
);
3384 ibmvnic_send_crq(adapter
, &crq
);
3386 crq
.request_capability
.capability
= cpu_to_be16(REQ_MTU
);
3387 crq
.request_capability
.number
= cpu_to_be64(adapter
->req_mtu
);
3388 atomic_inc(&adapter
->running_cap_crqs
);
3389 ibmvnic_send_crq(adapter
, &crq
);
3391 if (adapter
->netdev
->flags
& IFF_PROMISC
) {
3392 if (adapter
->promisc_supported
) {
3393 crq
.request_capability
.capability
=
3394 cpu_to_be16(PROMISC_REQUESTED
);
3395 crq
.request_capability
.number
= cpu_to_be64(1);
3396 atomic_inc(&adapter
->running_cap_crqs
);
3397 ibmvnic_send_crq(adapter
, &crq
);
3400 crq
.request_capability
.capability
=
3401 cpu_to_be16(PROMISC_REQUESTED
);
3402 crq
.request_capability
.number
= cpu_to_be64(0);
3403 atomic_inc(&adapter
->running_cap_crqs
);
3404 ibmvnic_send_crq(adapter
, &crq
);
3408 static int pending_scrq(struct ibmvnic_adapter
*adapter
,
3409 struct ibmvnic_sub_crq_queue
*scrq
)
3411 union sub_crq
*entry
= &scrq
->msgs
[scrq
->cur
];
3413 if (entry
->generic
.first
& IBMVNIC_CRQ_CMD_RSP
)
3419 static union sub_crq
*ibmvnic_next_scrq(struct ibmvnic_adapter
*adapter
,
3420 struct ibmvnic_sub_crq_queue
*scrq
)
3422 union sub_crq
*entry
;
3423 unsigned long flags
;
3425 spin_lock_irqsave(&scrq
->lock
, flags
);
3426 entry
= &scrq
->msgs
[scrq
->cur
];
3427 if (entry
->generic
.first
& IBMVNIC_CRQ_CMD_RSP
) {
3428 if (++scrq
->cur
== scrq
->size
)
3433 spin_unlock_irqrestore(&scrq
->lock
, flags
);
3438 static union ibmvnic_crq
*ibmvnic_next_crq(struct ibmvnic_adapter
*adapter
)
3440 struct ibmvnic_crq_queue
*queue
= &adapter
->crq
;
3441 union ibmvnic_crq
*crq
;
3443 crq
= &queue
->msgs
[queue
->cur
];
3444 if (crq
->generic
.first
& IBMVNIC_CRQ_CMD_RSP
) {
3445 if (++queue
->cur
== queue
->size
)
3454 static void print_subcrq_error(struct device
*dev
, int rc
, const char *func
)
3458 dev_warn_ratelimited(dev
,
3459 "%s failed: Send request is malformed or adapter failover pending. (rc=%d)\n",
3463 dev_warn_ratelimited(dev
,
3464 "%s failed: Backing queue closed. Adapter is down or failover pending. (rc=%d)\n",
3468 dev_err_ratelimited(dev
, "%s failed: (rc=%d)\n", func
, rc
);
3473 static int send_subcrq(struct ibmvnic_adapter
*adapter
, u64 remote_handle
,
3474 union sub_crq
*sub_crq
)
3476 unsigned int ua
= adapter
->vdev
->unit_address
;
3477 struct device
*dev
= &adapter
->vdev
->dev
;
3478 u64
*u64_crq
= (u64
*)sub_crq
;
3481 netdev_dbg(adapter
->netdev
,
3482 "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n",
3483 (unsigned long int)cpu_to_be64(remote_handle
),
3484 (unsigned long int)cpu_to_be64(u64_crq
[0]),
3485 (unsigned long int)cpu_to_be64(u64_crq
[1]),
3486 (unsigned long int)cpu_to_be64(u64_crq
[2]),
3487 (unsigned long int)cpu_to_be64(u64_crq
[3]));
3489 /* Make sure the hypervisor sees the complete request */
3492 rc
= plpar_hcall_norets(H_SEND_SUB_CRQ
, ua
,
3493 cpu_to_be64(remote_handle
),
3494 cpu_to_be64(u64_crq
[0]),
3495 cpu_to_be64(u64_crq
[1]),
3496 cpu_to_be64(u64_crq
[2]),
3497 cpu_to_be64(u64_crq
[3]));
3500 print_subcrq_error(dev
, rc
, __func__
);
3505 static int send_subcrq_indirect(struct ibmvnic_adapter
*adapter
,
3506 u64 remote_handle
, u64 ioba
, u64 num_entries
)
3508 unsigned int ua
= adapter
->vdev
->unit_address
;
3509 struct device
*dev
= &adapter
->vdev
->dev
;
3512 /* Make sure the hypervisor sees the complete request */
3514 rc
= plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT
, ua
,
3515 cpu_to_be64(remote_handle
),
3519 print_subcrq_error(dev
, rc
, __func__
);
3524 static int ibmvnic_send_crq(struct ibmvnic_adapter
*adapter
,
3525 union ibmvnic_crq
*crq
)
3527 unsigned int ua
= adapter
->vdev
->unit_address
;
3528 struct device
*dev
= &adapter
->vdev
->dev
;
3529 u64
*u64_crq
= (u64
*)crq
;
3532 netdev_dbg(adapter
->netdev
, "Sending CRQ: %016lx %016lx\n",
3533 (unsigned long int)cpu_to_be64(u64_crq
[0]),
3534 (unsigned long int)cpu_to_be64(u64_crq
[1]));
3536 if (!adapter
->crq
.active
&&
3537 crq
->generic
.first
!= IBMVNIC_CRQ_INIT_CMD
) {
3538 dev_warn(dev
, "Invalid request detected while CRQ is inactive, possible device state change during reset\n");
3542 /* Make sure the hypervisor sees the complete request */
3545 rc
= plpar_hcall_norets(H_SEND_CRQ
, ua
,
3546 cpu_to_be64(u64_crq
[0]),
3547 cpu_to_be64(u64_crq
[1]));
3550 if (rc
== H_CLOSED
) {
3551 dev_warn(dev
, "CRQ Queue closed\n");
3552 if (test_bit(0, &adapter
->resetting
))
3553 ibmvnic_reset(adapter
, VNIC_RESET_FATAL
);
3556 dev_warn(dev
, "Send error (rc=%d)\n", rc
);
3562 static int ibmvnic_send_crq_init(struct ibmvnic_adapter
*adapter
)
3564 union ibmvnic_crq crq
;
3566 memset(&crq
, 0, sizeof(crq
));
3567 crq
.generic
.first
= IBMVNIC_CRQ_INIT_CMD
;
3568 crq
.generic
.cmd
= IBMVNIC_CRQ_INIT
;
3569 netdev_dbg(adapter
->netdev
, "Sending CRQ init\n");
3571 return ibmvnic_send_crq(adapter
, &crq
);
3574 static int send_version_xchg(struct ibmvnic_adapter
*adapter
)
3576 union ibmvnic_crq crq
;
3578 memset(&crq
, 0, sizeof(crq
));
3579 crq
.version_exchange
.first
= IBMVNIC_CRQ_CMD
;
3580 crq
.version_exchange
.cmd
= VERSION_EXCHANGE
;
3581 crq
.version_exchange
.version
= cpu_to_be16(ibmvnic_version
);
3583 return ibmvnic_send_crq(adapter
, &crq
);
3586 struct vnic_login_client_data
{
3592 static int vnic_client_data_len(struct ibmvnic_adapter
*adapter
)
3596 /* Calculate the amount of buffer space needed for the
3597 * vnic client data in the login buffer. There are four entries,
3598 * OS name, LPAR name, device name, and a null last entry.
3600 len
= 4 * sizeof(struct vnic_login_client_data
);
3601 len
+= 6; /* "Linux" plus NULL */
3602 len
+= strlen(utsname()->nodename
) + 1;
3603 len
+= strlen(adapter
->netdev
->name
) + 1;
3608 static void vnic_add_client_data(struct ibmvnic_adapter
*adapter
,
3609 struct vnic_login_client_data
*vlcd
)
3611 const char *os_name
= "Linux";
3614 /* Type 1 - LPAR OS */
3616 len
= strlen(os_name
) + 1;
3617 vlcd
->len
= cpu_to_be16(len
);
3618 strncpy(vlcd
->name
, os_name
, len
);
3619 vlcd
= (struct vnic_login_client_data
*)(vlcd
->name
+ len
);
3621 /* Type 2 - LPAR name */
3623 len
= strlen(utsname()->nodename
) + 1;
3624 vlcd
->len
= cpu_to_be16(len
);
3625 strncpy(vlcd
->name
, utsname()->nodename
, len
);
3626 vlcd
= (struct vnic_login_client_data
*)(vlcd
->name
+ len
);
3628 /* Type 3 - device name */
3630 len
= strlen(adapter
->netdev
->name
) + 1;
3631 vlcd
->len
= cpu_to_be16(len
);
3632 strncpy(vlcd
->name
, adapter
->netdev
->name
, len
);
3635 static int send_login(struct ibmvnic_adapter
*adapter
)
3637 struct ibmvnic_login_rsp_buffer
*login_rsp_buffer
;
3638 struct ibmvnic_login_buffer
*login_buffer
;
3639 struct device
*dev
= &adapter
->vdev
->dev
;
3640 dma_addr_t rsp_buffer_token
;
3641 dma_addr_t buffer_token
;
3642 size_t rsp_buffer_size
;
3643 union ibmvnic_crq crq
;
3647 int client_data_len
;
3648 struct vnic_login_client_data
*vlcd
;
3651 if (!adapter
->tx_scrq
|| !adapter
->rx_scrq
) {
3652 netdev_err(adapter
->netdev
,
3653 "RX or TX queues are not allocated, device login failed\n");
3657 release_login_rsp_buffer(adapter
);
3658 client_data_len
= vnic_client_data_len(adapter
);
3661 sizeof(struct ibmvnic_login_buffer
) +
3662 sizeof(u64
) * (adapter
->req_tx_queues
+ adapter
->req_rx_queues
) +
3665 login_buffer
= kzalloc(buffer_size
, GFP_ATOMIC
);
3667 goto buf_alloc_failed
;
3669 buffer_token
= dma_map_single(dev
, login_buffer
, buffer_size
,
3671 if (dma_mapping_error(dev
, buffer_token
)) {
3672 dev_err(dev
, "Couldn't map login buffer\n");
3673 goto buf_map_failed
;
3676 rsp_buffer_size
= sizeof(struct ibmvnic_login_rsp_buffer
) +
3677 sizeof(u64
) * adapter
->req_tx_queues
+
3678 sizeof(u64
) * adapter
->req_rx_queues
+
3679 sizeof(u64
) * adapter
->req_rx_queues
+
3680 sizeof(u8
) * IBMVNIC_TX_DESC_VERSIONS
;
3682 login_rsp_buffer
= kmalloc(rsp_buffer_size
, GFP_ATOMIC
);
3683 if (!login_rsp_buffer
)
3684 goto buf_rsp_alloc_failed
;
3686 rsp_buffer_token
= dma_map_single(dev
, login_rsp_buffer
,
3687 rsp_buffer_size
, DMA_FROM_DEVICE
);
3688 if (dma_mapping_error(dev
, rsp_buffer_token
)) {
3689 dev_err(dev
, "Couldn't map login rsp buffer\n");
3690 goto buf_rsp_map_failed
;
3693 adapter
->login_buf
= login_buffer
;
3694 adapter
->login_buf_token
= buffer_token
;
3695 adapter
->login_buf_sz
= buffer_size
;
3696 adapter
->login_rsp_buf
= login_rsp_buffer
;
3697 adapter
->login_rsp_buf_token
= rsp_buffer_token
;
3698 adapter
->login_rsp_buf_sz
= rsp_buffer_size
;
3700 login_buffer
->len
= cpu_to_be32(buffer_size
);
3701 login_buffer
->version
= cpu_to_be32(INITIAL_VERSION_LB
);
3702 login_buffer
->num_txcomp_subcrqs
= cpu_to_be32(adapter
->req_tx_queues
);
3703 login_buffer
->off_txcomp_subcrqs
=
3704 cpu_to_be32(sizeof(struct ibmvnic_login_buffer
));
3705 login_buffer
->num_rxcomp_subcrqs
= cpu_to_be32(adapter
->req_rx_queues
);
3706 login_buffer
->off_rxcomp_subcrqs
=
3707 cpu_to_be32(sizeof(struct ibmvnic_login_buffer
) +
3708 sizeof(u64
) * adapter
->req_tx_queues
);
3709 login_buffer
->login_rsp_ioba
= cpu_to_be32(rsp_buffer_token
);
3710 login_buffer
->login_rsp_len
= cpu_to_be32(rsp_buffer_size
);
3712 tx_list_p
= (__be64
*)((char *)login_buffer
+
3713 sizeof(struct ibmvnic_login_buffer
));
3714 rx_list_p
= (__be64
*)((char *)login_buffer
+
3715 sizeof(struct ibmvnic_login_buffer
) +
3716 sizeof(u64
) * adapter
->req_tx_queues
);
3718 for (i
= 0; i
< adapter
->req_tx_queues
; i
++) {
3719 if (adapter
->tx_scrq
[i
]) {
3720 tx_list_p
[i
] = cpu_to_be64(adapter
->tx_scrq
[i
]->
3725 for (i
= 0; i
< adapter
->req_rx_queues
; i
++) {
3726 if (adapter
->rx_scrq
[i
]) {
3727 rx_list_p
[i
] = cpu_to_be64(adapter
->rx_scrq
[i
]->
3732 /* Insert vNIC login client data */
3733 vlcd
= (struct vnic_login_client_data
*)
3734 ((char *)rx_list_p
+ (sizeof(u64
) * adapter
->req_rx_queues
));
3735 login_buffer
->client_data_offset
=
3736 cpu_to_be32((char *)vlcd
- (char *)login_buffer
);
3737 login_buffer
->client_data_len
= cpu_to_be32(client_data_len
);
3739 vnic_add_client_data(adapter
, vlcd
);
3741 netdev_dbg(adapter
->netdev
, "Login Buffer:\n");
3742 for (i
= 0; i
< (adapter
->login_buf_sz
- 1) / 8 + 1; i
++) {
3743 netdev_dbg(adapter
->netdev
, "%016lx\n",
3744 ((unsigned long int *)(adapter
->login_buf
))[i
]);
3747 memset(&crq
, 0, sizeof(crq
));
3748 crq
.login
.first
= IBMVNIC_CRQ_CMD
;
3749 crq
.login
.cmd
= LOGIN
;
3750 crq
.login
.ioba
= cpu_to_be32(buffer_token
);
3751 crq
.login
.len
= cpu_to_be32(buffer_size
);
3752 ibmvnic_send_crq(adapter
, &crq
);
3757 kfree(login_rsp_buffer
);
3758 buf_rsp_alloc_failed
:
3759 dma_unmap_single(dev
, buffer_token
, buffer_size
, DMA_TO_DEVICE
);
3761 kfree(login_buffer
);
3766 static int send_request_map(struct ibmvnic_adapter
*adapter
, dma_addr_t addr
,
3769 union ibmvnic_crq crq
;
3771 memset(&crq
, 0, sizeof(crq
));
3772 crq
.request_map
.first
= IBMVNIC_CRQ_CMD
;
3773 crq
.request_map
.cmd
= REQUEST_MAP
;
3774 crq
.request_map
.map_id
= map_id
;
3775 crq
.request_map
.ioba
= cpu_to_be32(addr
);
3776 crq
.request_map
.len
= cpu_to_be32(len
);
3777 return ibmvnic_send_crq(adapter
, &crq
);
3780 static int send_request_unmap(struct ibmvnic_adapter
*adapter
, u8 map_id
)
3782 union ibmvnic_crq crq
;
3784 memset(&crq
, 0, sizeof(crq
));
3785 crq
.request_unmap
.first
= IBMVNIC_CRQ_CMD
;
3786 crq
.request_unmap
.cmd
= REQUEST_UNMAP
;
3787 crq
.request_unmap
.map_id
= map_id
;
3788 return ibmvnic_send_crq(adapter
, &crq
);
3791 static void send_map_query(struct ibmvnic_adapter
*adapter
)
3793 union ibmvnic_crq crq
;
3795 memset(&crq
, 0, sizeof(crq
));
3796 crq
.query_map
.first
= IBMVNIC_CRQ_CMD
;
3797 crq
.query_map
.cmd
= QUERY_MAP
;
3798 ibmvnic_send_crq(adapter
, &crq
);
3801 /* Send a series of CRQs requesting various capabilities of the VNIC server */
3802 static void send_cap_queries(struct ibmvnic_adapter
*adapter
)
3804 union ibmvnic_crq crq
;
3806 atomic_set(&adapter
->running_cap_crqs
, 0);
3807 memset(&crq
, 0, sizeof(crq
));
3808 crq
.query_capability
.first
= IBMVNIC_CRQ_CMD
;
3809 crq
.query_capability
.cmd
= QUERY_CAPABILITY
;
3811 crq
.query_capability
.capability
= cpu_to_be16(MIN_TX_QUEUES
);
3812 atomic_inc(&adapter
->running_cap_crqs
);
3813 ibmvnic_send_crq(adapter
, &crq
);
3815 crq
.query_capability
.capability
= cpu_to_be16(MIN_RX_QUEUES
);
3816 atomic_inc(&adapter
->running_cap_crqs
);
3817 ibmvnic_send_crq(adapter
, &crq
);
3819 crq
.query_capability
.capability
= cpu_to_be16(MIN_RX_ADD_QUEUES
);
3820 atomic_inc(&adapter
->running_cap_crqs
);
3821 ibmvnic_send_crq(adapter
, &crq
);
3823 crq
.query_capability
.capability
= cpu_to_be16(MAX_TX_QUEUES
);
3824 atomic_inc(&adapter
->running_cap_crqs
);
3825 ibmvnic_send_crq(adapter
, &crq
);
3827 crq
.query_capability
.capability
= cpu_to_be16(MAX_RX_QUEUES
);
3828 atomic_inc(&adapter
->running_cap_crqs
);
3829 ibmvnic_send_crq(adapter
, &crq
);
3831 crq
.query_capability
.capability
= cpu_to_be16(MAX_RX_ADD_QUEUES
);
3832 atomic_inc(&adapter
->running_cap_crqs
);
3833 ibmvnic_send_crq(adapter
, &crq
);
3835 crq
.query_capability
.capability
=
3836 cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ
);
3837 atomic_inc(&adapter
->running_cap_crqs
);
3838 ibmvnic_send_crq(adapter
, &crq
);
3840 crq
.query_capability
.capability
=
3841 cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ
);
3842 atomic_inc(&adapter
->running_cap_crqs
);
3843 ibmvnic_send_crq(adapter
, &crq
);
3845 crq
.query_capability
.capability
=
3846 cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ
);
3847 atomic_inc(&adapter
->running_cap_crqs
);
3848 ibmvnic_send_crq(adapter
, &crq
);
3850 crq
.query_capability
.capability
=
3851 cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ
);
3852 atomic_inc(&adapter
->running_cap_crqs
);
3853 ibmvnic_send_crq(adapter
, &crq
);
3855 crq
.query_capability
.capability
= cpu_to_be16(TCP_IP_OFFLOAD
);
3856 atomic_inc(&adapter
->running_cap_crqs
);
3857 ibmvnic_send_crq(adapter
, &crq
);
3859 crq
.query_capability
.capability
= cpu_to_be16(PROMISC_SUPPORTED
);
3860 atomic_inc(&adapter
->running_cap_crqs
);
3861 ibmvnic_send_crq(adapter
, &crq
);
3863 crq
.query_capability
.capability
= cpu_to_be16(MIN_MTU
);
3864 atomic_inc(&adapter
->running_cap_crqs
);
3865 ibmvnic_send_crq(adapter
, &crq
);
3867 crq
.query_capability
.capability
= cpu_to_be16(MAX_MTU
);
3868 atomic_inc(&adapter
->running_cap_crqs
);
3869 ibmvnic_send_crq(adapter
, &crq
);
3871 crq
.query_capability
.capability
= cpu_to_be16(MAX_MULTICAST_FILTERS
);
3872 atomic_inc(&adapter
->running_cap_crqs
);
3873 ibmvnic_send_crq(adapter
, &crq
);
3875 crq
.query_capability
.capability
= cpu_to_be16(VLAN_HEADER_INSERTION
);
3876 atomic_inc(&adapter
->running_cap_crqs
);
3877 ibmvnic_send_crq(adapter
, &crq
);
3879 crq
.query_capability
.capability
= cpu_to_be16(RX_VLAN_HEADER_INSERTION
);
3880 atomic_inc(&adapter
->running_cap_crqs
);
3881 ibmvnic_send_crq(adapter
, &crq
);
3883 crq
.query_capability
.capability
= cpu_to_be16(MAX_TX_SG_ENTRIES
);
3884 atomic_inc(&adapter
->running_cap_crqs
);
3885 ibmvnic_send_crq(adapter
, &crq
);
3887 crq
.query_capability
.capability
= cpu_to_be16(RX_SG_SUPPORTED
);
3888 atomic_inc(&adapter
->running_cap_crqs
);
3889 ibmvnic_send_crq(adapter
, &crq
);
3891 crq
.query_capability
.capability
= cpu_to_be16(OPT_TX_COMP_SUB_QUEUES
);
3892 atomic_inc(&adapter
->running_cap_crqs
);
3893 ibmvnic_send_crq(adapter
, &crq
);
3895 crq
.query_capability
.capability
= cpu_to_be16(OPT_RX_COMP_QUEUES
);
3896 atomic_inc(&adapter
->running_cap_crqs
);
3897 ibmvnic_send_crq(adapter
, &crq
);
3899 crq
.query_capability
.capability
=
3900 cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q
);
3901 atomic_inc(&adapter
->running_cap_crqs
);
3902 ibmvnic_send_crq(adapter
, &crq
);
3904 crq
.query_capability
.capability
=
3905 cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ
);
3906 atomic_inc(&adapter
->running_cap_crqs
);
3907 ibmvnic_send_crq(adapter
, &crq
);
3909 crq
.query_capability
.capability
=
3910 cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ
);
3911 atomic_inc(&adapter
->running_cap_crqs
);
3912 ibmvnic_send_crq(adapter
, &crq
);
3914 crq
.query_capability
.capability
= cpu_to_be16(TX_RX_DESC_REQ
);
3915 atomic_inc(&adapter
->running_cap_crqs
);
3916 ibmvnic_send_crq(adapter
, &crq
);
3919 static void handle_vpd_size_rsp(union ibmvnic_crq
*crq
,
3920 struct ibmvnic_adapter
*adapter
)
3922 struct device
*dev
= &adapter
->vdev
->dev
;
3924 if (crq
->get_vpd_size_rsp
.rc
.code
) {
3925 dev_err(dev
, "Error retrieving VPD size, rc=%x\n",
3926 crq
->get_vpd_size_rsp
.rc
.code
);
3927 complete(&adapter
->fw_done
);
3931 adapter
->vpd
->len
= be64_to_cpu(crq
->get_vpd_size_rsp
.len
);
3932 complete(&adapter
->fw_done
);
3935 static void handle_vpd_rsp(union ibmvnic_crq
*crq
,
3936 struct ibmvnic_adapter
*adapter
)
3938 struct device
*dev
= &adapter
->vdev
->dev
;
3939 unsigned char *substr
= NULL
;
3940 u8 fw_level_len
= 0;
3942 memset(adapter
->fw_version
, 0, 32);
3944 dma_unmap_single(dev
, adapter
->vpd
->dma_addr
, adapter
->vpd
->len
,
3947 if (crq
->get_vpd_rsp
.rc
.code
) {
3948 dev_err(dev
, "Error retrieving VPD from device, rc=%x\n",
3949 crq
->get_vpd_rsp
.rc
.code
);
3953 /* get the position of the firmware version info
3954 * located after the ASCII 'RM' substring in the buffer
3956 substr
= strnstr(adapter
->vpd
->buff
, "RM", adapter
->vpd
->len
);
3958 dev_info(dev
, "Warning - No FW level has been provided in the VPD buffer by the VIOS Server\n");
3962 /* get length of firmware level ASCII substring */
3963 if ((substr
+ 2) < (adapter
->vpd
->buff
+ adapter
->vpd
->len
)) {
3964 fw_level_len
= *(substr
+ 2);
3966 dev_info(dev
, "Length of FW substr extrapolated VDP buff\n");
3970 /* copy firmware version string from vpd into adapter */
3971 if ((substr
+ 3 + fw_level_len
) <
3972 (adapter
->vpd
->buff
+ adapter
->vpd
->len
)) {
3973 strncpy((char *)adapter
->fw_version
, substr
+ 3, fw_level_len
);
3975 dev_info(dev
, "FW substr extrapolated VPD buff\n");
3979 if (adapter
->fw_version
[0] == '\0')
3980 strncpy((char *)adapter
->fw_version
, "N/A", 3 * sizeof(char));
3981 complete(&adapter
->fw_done
);
3984 static void handle_query_ip_offload_rsp(struct ibmvnic_adapter
*adapter
)
3986 struct device
*dev
= &adapter
->vdev
->dev
;
3987 struct ibmvnic_query_ip_offload_buffer
*buf
= &adapter
->ip_offload_buf
;
3988 netdev_features_t old_hw_features
= 0;
3989 union ibmvnic_crq crq
;
3992 dma_unmap_single(dev
, adapter
->ip_offload_tok
,
3993 sizeof(adapter
->ip_offload_buf
), DMA_FROM_DEVICE
);
3995 netdev_dbg(adapter
->netdev
, "Query IP Offload Buffer:\n");
3996 for (i
= 0; i
< (sizeof(adapter
->ip_offload_buf
) - 1) / 8 + 1; i
++)
3997 netdev_dbg(adapter
->netdev
, "%016lx\n",
3998 ((unsigned long int *)(buf
))[i
]);
4000 netdev_dbg(adapter
->netdev
, "ipv4_chksum = %d\n", buf
->ipv4_chksum
);
4001 netdev_dbg(adapter
->netdev
, "ipv6_chksum = %d\n", buf
->ipv6_chksum
);
4002 netdev_dbg(adapter
->netdev
, "tcp_ipv4_chksum = %d\n",
4003 buf
->tcp_ipv4_chksum
);
4004 netdev_dbg(adapter
->netdev
, "tcp_ipv6_chksum = %d\n",
4005 buf
->tcp_ipv6_chksum
);
4006 netdev_dbg(adapter
->netdev
, "udp_ipv4_chksum = %d\n",
4007 buf
->udp_ipv4_chksum
);
4008 netdev_dbg(adapter
->netdev
, "udp_ipv6_chksum = %d\n",
4009 buf
->udp_ipv6_chksum
);
4010 netdev_dbg(adapter
->netdev
, "large_tx_ipv4 = %d\n",
4011 buf
->large_tx_ipv4
);
4012 netdev_dbg(adapter
->netdev
, "large_tx_ipv6 = %d\n",
4013 buf
->large_tx_ipv6
);
4014 netdev_dbg(adapter
->netdev
, "large_rx_ipv4 = %d\n",
4015 buf
->large_rx_ipv4
);
4016 netdev_dbg(adapter
->netdev
, "large_rx_ipv6 = %d\n",
4017 buf
->large_rx_ipv6
);
4018 netdev_dbg(adapter
->netdev
, "max_ipv4_hdr_sz = %d\n",
4019 buf
->max_ipv4_header_size
);
4020 netdev_dbg(adapter
->netdev
, "max_ipv6_hdr_sz = %d\n",
4021 buf
->max_ipv6_header_size
);
4022 netdev_dbg(adapter
->netdev
, "max_tcp_hdr_size = %d\n",
4023 buf
->max_tcp_header_size
);
4024 netdev_dbg(adapter
->netdev
, "max_udp_hdr_size = %d\n",
4025 buf
->max_udp_header_size
);
4026 netdev_dbg(adapter
->netdev
, "max_large_tx_size = %d\n",
4027 buf
->max_large_tx_size
);
4028 netdev_dbg(adapter
->netdev
, "max_large_rx_size = %d\n",
4029 buf
->max_large_rx_size
);
4030 netdev_dbg(adapter
->netdev
, "ipv6_ext_hdr = %d\n",
4031 buf
->ipv6_extension_header
);
4032 netdev_dbg(adapter
->netdev
, "tcp_pseudosum_req = %d\n",
4033 buf
->tcp_pseudosum_req
);
4034 netdev_dbg(adapter
->netdev
, "num_ipv6_ext_hd = %d\n",
4035 buf
->num_ipv6_ext_headers
);
4036 netdev_dbg(adapter
->netdev
, "off_ipv6_ext_hd = %d\n",
4037 buf
->off_ipv6_ext_headers
);
4039 adapter
->ip_offload_ctrl_tok
=
4040 dma_map_single(dev
, &adapter
->ip_offload_ctrl
,
4041 sizeof(adapter
->ip_offload_ctrl
), DMA_TO_DEVICE
);
4043 if (dma_mapping_error(dev
, adapter
->ip_offload_ctrl_tok
)) {
4044 dev_err(dev
, "Couldn't map ip offload control buffer\n");
4048 adapter
->ip_offload_ctrl
.len
=
4049 cpu_to_be32(sizeof(adapter
->ip_offload_ctrl
));
4050 adapter
->ip_offload_ctrl
.version
= cpu_to_be32(INITIAL_VERSION_IOB
);
4051 adapter
->ip_offload_ctrl
.ipv4_chksum
= buf
->ipv4_chksum
;
4052 adapter
->ip_offload_ctrl
.ipv6_chksum
= buf
->ipv6_chksum
;
4053 adapter
->ip_offload_ctrl
.tcp_ipv4_chksum
= buf
->tcp_ipv4_chksum
;
4054 adapter
->ip_offload_ctrl
.udp_ipv4_chksum
= buf
->udp_ipv4_chksum
;
4055 adapter
->ip_offload_ctrl
.tcp_ipv6_chksum
= buf
->tcp_ipv6_chksum
;
4056 adapter
->ip_offload_ctrl
.udp_ipv6_chksum
= buf
->udp_ipv6_chksum
;
4057 adapter
->ip_offload_ctrl
.large_tx_ipv4
= buf
->large_tx_ipv4
;
4058 adapter
->ip_offload_ctrl
.large_tx_ipv6
= buf
->large_tx_ipv6
;
4060 /* large_rx disabled for now, additional features needed */
4061 adapter
->ip_offload_ctrl
.large_rx_ipv4
= 0;
4062 adapter
->ip_offload_ctrl
.large_rx_ipv6
= 0;
4064 if (adapter
->state
!= VNIC_PROBING
) {
4065 old_hw_features
= adapter
->netdev
->hw_features
;
4066 adapter
->netdev
->hw_features
= 0;
4069 adapter
->netdev
->hw_features
= NETIF_F_SG
| NETIF_F_GSO
| NETIF_F_GRO
;
4071 if (buf
->tcp_ipv4_chksum
|| buf
->udp_ipv4_chksum
)
4072 adapter
->netdev
->hw_features
|= NETIF_F_IP_CSUM
;
4074 if (buf
->tcp_ipv6_chksum
|| buf
->udp_ipv6_chksum
)
4075 adapter
->netdev
->hw_features
|= NETIF_F_IPV6_CSUM
;
4077 if ((adapter
->netdev
->features
&
4078 (NETIF_F_IP_CSUM
| NETIF_F_IPV6_CSUM
)))
4079 adapter
->netdev
->hw_features
|= NETIF_F_RXCSUM
;
4081 if (buf
->large_tx_ipv4
)
4082 adapter
->netdev
->hw_features
|= NETIF_F_TSO
;
4083 if (buf
->large_tx_ipv6
)
4084 adapter
->netdev
->hw_features
|= NETIF_F_TSO6
;
4086 if (adapter
->state
== VNIC_PROBING
) {
4087 adapter
->netdev
->features
|= adapter
->netdev
->hw_features
;
4088 } else if (old_hw_features
!= adapter
->netdev
->hw_features
) {
4089 netdev_features_t tmp
= 0;
4091 /* disable features no longer supported */
4092 adapter
->netdev
->features
&= adapter
->netdev
->hw_features
;
4093 /* turn on features now supported if previously enabled */
4094 tmp
= (old_hw_features
^ adapter
->netdev
->hw_features
) &
4095 adapter
->netdev
->hw_features
;
4096 adapter
->netdev
->features
|=
4097 tmp
& adapter
->netdev
->wanted_features
;
4100 memset(&crq
, 0, sizeof(crq
));
4101 crq
.control_ip_offload
.first
= IBMVNIC_CRQ_CMD
;
4102 crq
.control_ip_offload
.cmd
= CONTROL_IP_OFFLOAD
;
4103 crq
.control_ip_offload
.len
=
4104 cpu_to_be32(sizeof(adapter
->ip_offload_ctrl
));
4105 crq
.control_ip_offload
.ioba
= cpu_to_be32(adapter
->ip_offload_ctrl_tok
);
4106 ibmvnic_send_crq(adapter
, &crq
);
4109 static const char *ibmvnic_fw_err_cause(u16 cause
)
4112 case ADAPTER_PROBLEM
:
4113 return "adapter problem";
4115 return "bus problem";
4117 return "firmware problem";
4119 return "device driver problem";
4121 return "EEH recovery";
4123 return "firmware updated";
4125 return "low Memory";
4131 static void handle_error_indication(union ibmvnic_crq
*crq
,
4132 struct ibmvnic_adapter
*adapter
)
4134 struct device
*dev
= &adapter
->vdev
->dev
;
4137 cause
= be16_to_cpu(crq
->error_indication
.error_cause
);
4139 dev_warn_ratelimited(dev
,
4140 "Firmware reports %serror, cause: %s. Starting recovery...\n",
4141 crq
->error_indication
.flags
4142 & IBMVNIC_FATAL_ERROR
? "FATAL " : "",
4143 ibmvnic_fw_err_cause(cause
));
4145 if (crq
->error_indication
.flags
& IBMVNIC_FATAL_ERROR
)
4146 ibmvnic_reset(adapter
, VNIC_RESET_FATAL
);
4148 ibmvnic_reset(adapter
, VNIC_RESET_NON_FATAL
);
4151 static int handle_change_mac_rsp(union ibmvnic_crq
*crq
,
4152 struct ibmvnic_adapter
*adapter
)
4154 struct net_device
*netdev
= adapter
->netdev
;
4155 struct device
*dev
= &adapter
->vdev
->dev
;
4158 rc
= crq
->change_mac_addr_rsp
.rc
.code
;
4160 dev_err(dev
, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc
);
4163 ether_addr_copy(netdev
->dev_addr
,
4164 &crq
->change_mac_addr_rsp
.mac_addr
[0]);
4166 complete(&adapter
->fw_done
);
4170 static void handle_request_cap_rsp(union ibmvnic_crq
*crq
,
4171 struct ibmvnic_adapter
*adapter
)
4173 struct device
*dev
= &adapter
->vdev
->dev
;
4177 atomic_dec(&adapter
->running_cap_crqs
);
4178 switch (be16_to_cpu(crq
->request_capability_rsp
.capability
)) {
4180 req_value
= &adapter
->req_tx_queues
;
4184 req_value
= &adapter
->req_rx_queues
;
4187 case REQ_RX_ADD_QUEUES
:
4188 req_value
= &adapter
->req_rx_add_queues
;
4191 case REQ_TX_ENTRIES_PER_SUBCRQ
:
4192 req_value
= &adapter
->req_tx_entries_per_subcrq
;
4193 name
= "tx_entries_per_subcrq";
4195 case REQ_RX_ADD_ENTRIES_PER_SUBCRQ
:
4196 req_value
= &adapter
->req_rx_add_entries_per_subcrq
;
4197 name
= "rx_add_entries_per_subcrq";
4200 req_value
= &adapter
->req_mtu
;
4203 case PROMISC_REQUESTED
:
4204 req_value
= &adapter
->promisc
;
4208 dev_err(dev
, "Got invalid cap request rsp %d\n",
4209 crq
->request_capability
.capability
);
4213 switch (crq
->request_capability_rsp
.rc
.code
) {
4216 case PARTIALSUCCESS
:
4217 dev_info(dev
, "req=%lld, rsp=%ld in %s queue, retrying.\n",
4219 (long int)be64_to_cpu(crq
->request_capability_rsp
.
4222 if (be16_to_cpu(crq
->request_capability_rsp
.capability
) ==
4224 pr_err("mtu of %llu is not supported. Reverting.\n",
4226 *req_value
= adapter
->fallback
.mtu
;
4229 be64_to_cpu(crq
->request_capability_rsp
.number
);
4232 ibmvnic_send_req_caps(adapter
, 1);
4235 dev_err(dev
, "Error %d in request cap rsp\n",
4236 crq
->request_capability_rsp
.rc
.code
);
4240 /* Done receiving requested capabilities, query IP offload support */
4241 if (atomic_read(&adapter
->running_cap_crqs
) == 0) {
4242 union ibmvnic_crq newcrq
;
4243 int buf_sz
= sizeof(struct ibmvnic_query_ip_offload_buffer
);
4244 struct ibmvnic_query_ip_offload_buffer
*ip_offload_buf
=
4245 &adapter
->ip_offload_buf
;
4247 adapter
->wait_capability
= false;
4248 adapter
->ip_offload_tok
= dma_map_single(dev
, ip_offload_buf
,
4252 if (dma_mapping_error(dev
, adapter
->ip_offload_tok
)) {
4253 if (!firmware_has_feature(FW_FEATURE_CMO
))
4254 dev_err(dev
, "Couldn't map offload buffer\n");
4258 memset(&newcrq
, 0, sizeof(newcrq
));
4259 newcrq
.query_ip_offload
.first
= IBMVNIC_CRQ_CMD
;
4260 newcrq
.query_ip_offload
.cmd
= QUERY_IP_OFFLOAD
;
4261 newcrq
.query_ip_offload
.len
= cpu_to_be32(buf_sz
);
4262 newcrq
.query_ip_offload
.ioba
=
4263 cpu_to_be32(adapter
->ip_offload_tok
);
4265 ibmvnic_send_crq(adapter
, &newcrq
);
4269 static int handle_login_rsp(union ibmvnic_crq
*login_rsp_crq
,
4270 struct ibmvnic_adapter
*adapter
)
4272 struct device
*dev
= &adapter
->vdev
->dev
;
4273 struct net_device
*netdev
= adapter
->netdev
;
4274 struct ibmvnic_login_rsp_buffer
*login_rsp
= adapter
->login_rsp_buf
;
4275 struct ibmvnic_login_buffer
*login
= adapter
->login_buf
;
4278 dma_unmap_single(dev
, adapter
->login_buf_token
, adapter
->login_buf_sz
,
4280 dma_unmap_single(dev
, adapter
->login_rsp_buf_token
,
4281 adapter
->login_rsp_buf_sz
, DMA_FROM_DEVICE
);
4283 /* If the number of queues requested can't be allocated by the
4284 * server, the login response will return with code 1. We will need
4285 * to resend the login buffer with fewer queues requested.
4287 if (login_rsp_crq
->generic
.rc
.code
) {
4288 adapter
->init_done_rc
= login_rsp_crq
->generic
.rc
.code
;
4289 complete(&adapter
->init_done
);
4293 netdev
->mtu
= adapter
->req_mtu
- ETH_HLEN
;
4295 netdev_dbg(adapter
->netdev
, "Login Response Buffer:\n");
4296 for (i
= 0; i
< (adapter
->login_rsp_buf_sz
- 1) / 8 + 1; i
++) {
4297 netdev_dbg(adapter
->netdev
, "%016lx\n",
4298 ((unsigned long int *)(adapter
->login_rsp_buf
))[i
]);
4302 if (login
->num_txcomp_subcrqs
!= login_rsp
->num_txsubm_subcrqs
||
4303 (be32_to_cpu(login
->num_rxcomp_subcrqs
) *
4304 adapter
->req_rx_add_queues
!=
4305 be32_to_cpu(login_rsp
->num_rxadd_subcrqs
))) {
4306 dev_err(dev
, "FATAL: Inconsistent login and login rsp\n");
4307 ibmvnic_remove(adapter
->vdev
);
4310 release_login_buffer(adapter
);
4311 complete(&adapter
->init_done
);
4316 static void handle_request_unmap_rsp(union ibmvnic_crq
*crq
,
4317 struct ibmvnic_adapter
*adapter
)
4319 struct device
*dev
= &adapter
->vdev
->dev
;
4322 rc
= crq
->request_unmap_rsp
.rc
.code
;
4324 dev_err(dev
, "Error %ld in REQUEST_UNMAP_RSP\n", rc
);
4327 static void handle_query_map_rsp(union ibmvnic_crq
*crq
,
4328 struct ibmvnic_adapter
*adapter
)
4330 struct net_device
*netdev
= adapter
->netdev
;
4331 struct device
*dev
= &adapter
->vdev
->dev
;
4334 rc
= crq
->query_map_rsp
.rc
.code
;
4336 dev_err(dev
, "Error %ld in QUERY_MAP_RSP\n", rc
);
4339 netdev_dbg(netdev
, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n",
4340 crq
->query_map_rsp
.page_size
, crq
->query_map_rsp
.tot_pages
,
4341 crq
->query_map_rsp
.free_pages
);
4344 static void handle_query_cap_rsp(union ibmvnic_crq
*crq
,
4345 struct ibmvnic_adapter
*adapter
)
4347 struct net_device
*netdev
= adapter
->netdev
;
4348 struct device
*dev
= &adapter
->vdev
->dev
;
4351 atomic_dec(&adapter
->running_cap_crqs
);
4352 netdev_dbg(netdev
, "Outstanding queries: %d\n",
4353 atomic_read(&adapter
->running_cap_crqs
));
4354 rc
= crq
->query_capability
.rc
.code
;
4356 dev_err(dev
, "Error %ld in QUERY_CAP_RSP\n", rc
);
4360 switch (be16_to_cpu(crq
->query_capability
.capability
)) {
4362 adapter
->min_tx_queues
=
4363 be64_to_cpu(crq
->query_capability
.number
);
4364 netdev_dbg(netdev
, "min_tx_queues = %lld\n",
4365 adapter
->min_tx_queues
);
4368 adapter
->min_rx_queues
=
4369 be64_to_cpu(crq
->query_capability
.number
);
4370 netdev_dbg(netdev
, "min_rx_queues = %lld\n",
4371 adapter
->min_rx_queues
);
4373 case MIN_RX_ADD_QUEUES
:
4374 adapter
->min_rx_add_queues
=
4375 be64_to_cpu(crq
->query_capability
.number
);
4376 netdev_dbg(netdev
, "min_rx_add_queues = %lld\n",
4377 adapter
->min_rx_add_queues
);
4380 adapter
->max_tx_queues
=
4381 be64_to_cpu(crq
->query_capability
.number
);
4382 netdev_dbg(netdev
, "max_tx_queues = %lld\n",
4383 adapter
->max_tx_queues
);
4386 adapter
->max_rx_queues
=
4387 be64_to_cpu(crq
->query_capability
.number
);
4388 netdev_dbg(netdev
, "max_rx_queues = %lld\n",
4389 adapter
->max_rx_queues
);
4391 case MAX_RX_ADD_QUEUES
:
4392 adapter
->max_rx_add_queues
=
4393 be64_to_cpu(crq
->query_capability
.number
);
4394 netdev_dbg(netdev
, "max_rx_add_queues = %lld\n",
4395 adapter
->max_rx_add_queues
);
4397 case MIN_TX_ENTRIES_PER_SUBCRQ
:
4398 adapter
->min_tx_entries_per_subcrq
=
4399 be64_to_cpu(crq
->query_capability
.number
);
4400 netdev_dbg(netdev
, "min_tx_entries_per_subcrq = %lld\n",
4401 adapter
->min_tx_entries_per_subcrq
);
4403 case MIN_RX_ADD_ENTRIES_PER_SUBCRQ
:
4404 adapter
->min_rx_add_entries_per_subcrq
=
4405 be64_to_cpu(crq
->query_capability
.number
);
4406 netdev_dbg(netdev
, "min_rx_add_entrs_per_subcrq = %lld\n",
4407 adapter
->min_rx_add_entries_per_subcrq
);
4409 case MAX_TX_ENTRIES_PER_SUBCRQ
:
4410 adapter
->max_tx_entries_per_subcrq
=
4411 be64_to_cpu(crq
->query_capability
.number
);
4412 netdev_dbg(netdev
, "max_tx_entries_per_subcrq = %lld\n",
4413 adapter
->max_tx_entries_per_subcrq
);
4415 case MAX_RX_ADD_ENTRIES_PER_SUBCRQ
:
4416 adapter
->max_rx_add_entries_per_subcrq
=
4417 be64_to_cpu(crq
->query_capability
.number
);
4418 netdev_dbg(netdev
, "max_rx_add_entrs_per_subcrq = %lld\n",
4419 adapter
->max_rx_add_entries_per_subcrq
);
4421 case TCP_IP_OFFLOAD
:
4422 adapter
->tcp_ip_offload
=
4423 be64_to_cpu(crq
->query_capability
.number
);
4424 netdev_dbg(netdev
, "tcp_ip_offload = %lld\n",
4425 adapter
->tcp_ip_offload
);
4427 case PROMISC_SUPPORTED
:
4428 adapter
->promisc_supported
=
4429 be64_to_cpu(crq
->query_capability
.number
);
4430 netdev_dbg(netdev
, "promisc_supported = %lld\n",
4431 adapter
->promisc_supported
);
4434 adapter
->min_mtu
= be64_to_cpu(crq
->query_capability
.number
);
4435 netdev
->min_mtu
= adapter
->min_mtu
- ETH_HLEN
;
4436 netdev_dbg(netdev
, "min_mtu = %lld\n", adapter
->min_mtu
);
4439 adapter
->max_mtu
= be64_to_cpu(crq
->query_capability
.number
);
4440 netdev
->max_mtu
= adapter
->max_mtu
- ETH_HLEN
;
4441 netdev_dbg(netdev
, "max_mtu = %lld\n", adapter
->max_mtu
);
4443 case MAX_MULTICAST_FILTERS
:
4444 adapter
->max_multicast_filters
=
4445 be64_to_cpu(crq
->query_capability
.number
);
4446 netdev_dbg(netdev
, "max_multicast_filters = %lld\n",
4447 adapter
->max_multicast_filters
);
4449 case VLAN_HEADER_INSERTION
:
4450 adapter
->vlan_header_insertion
=
4451 be64_to_cpu(crq
->query_capability
.number
);
4452 if (adapter
->vlan_header_insertion
)
4453 netdev
->features
|= NETIF_F_HW_VLAN_STAG_TX
;
4454 netdev_dbg(netdev
, "vlan_header_insertion = %lld\n",
4455 adapter
->vlan_header_insertion
);
4457 case RX_VLAN_HEADER_INSERTION
:
4458 adapter
->rx_vlan_header_insertion
=
4459 be64_to_cpu(crq
->query_capability
.number
);
4460 netdev_dbg(netdev
, "rx_vlan_header_insertion = %lld\n",
4461 adapter
->rx_vlan_header_insertion
);
4463 case MAX_TX_SG_ENTRIES
:
4464 adapter
->max_tx_sg_entries
=
4465 be64_to_cpu(crq
->query_capability
.number
);
4466 netdev_dbg(netdev
, "max_tx_sg_entries = %lld\n",
4467 adapter
->max_tx_sg_entries
);
4469 case RX_SG_SUPPORTED
:
4470 adapter
->rx_sg_supported
=
4471 be64_to_cpu(crq
->query_capability
.number
);
4472 netdev_dbg(netdev
, "rx_sg_supported = %lld\n",
4473 adapter
->rx_sg_supported
);
4475 case OPT_TX_COMP_SUB_QUEUES
:
4476 adapter
->opt_tx_comp_sub_queues
=
4477 be64_to_cpu(crq
->query_capability
.number
);
4478 netdev_dbg(netdev
, "opt_tx_comp_sub_queues = %lld\n",
4479 adapter
->opt_tx_comp_sub_queues
);
4481 case OPT_RX_COMP_QUEUES
:
4482 adapter
->opt_rx_comp_queues
=
4483 be64_to_cpu(crq
->query_capability
.number
);
4484 netdev_dbg(netdev
, "opt_rx_comp_queues = %lld\n",
4485 adapter
->opt_rx_comp_queues
);
4487 case OPT_RX_BUFADD_Q_PER_RX_COMP_Q
:
4488 adapter
->opt_rx_bufadd_q_per_rx_comp_q
=
4489 be64_to_cpu(crq
->query_capability
.number
);
4490 netdev_dbg(netdev
, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n",
4491 adapter
->opt_rx_bufadd_q_per_rx_comp_q
);
4493 case OPT_TX_ENTRIES_PER_SUBCRQ
:
4494 adapter
->opt_tx_entries_per_subcrq
=
4495 be64_to_cpu(crq
->query_capability
.number
);
4496 netdev_dbg(netdev
, "opt_tx_entries_per_subcrq = %lld\n",
4497 adapter
->opt_tx_entries_per_subcrq
);
4499 case OPT_RXBA_ENTRIES_PER_SUBCRQ
:
4500 adapter
->opt_rxba_entries_per_subcrq
=
4501 be64_to_cpu(crq
->query_capability
.number
);
4502 netdev_dbg(netdev
, "opt_rxba_entries_per_subcrq = %lld\n",
4503 adapter
->opt_rxba_entries_per_subcrq
);
4505 case TX_RX_DESC_REQ
:
4506 adapter
->tx_rx_desc_req
= crq
->query_capability
.number
;
4507 netdev_dbg(netdev
, "tx_rx_desc_req = %llx\n",
4508 adapter
->tx_rx_desc_req
);
4512 netdev_err(netdev
, "Got invalid cap rsp %d\n",
4513 crq
->query_capability
.capability
);
4517 if (atomic_read(&adapter
->running_cap_crqs
) == 0) {
4518 adapter
->wait_capability
= false;
4519 ibmvnic_send_req_caps(adapter
, 0);
4523 static int send_query_phys_parms(struct ibmvnic_adapter
*adapter
)
4525 union ibmvnic_crq crq
;
4528 memset(&crq
, 0, sizeof(crq
));
4529 crq
.query_phys_parms
.first
= IBMVNIC_CRQ_CMD
;
4530 crq
.query_phys_parms
.cmd
= QUERY_PHYS_PARMS
;
4532 mutex_lock(&adapter
->fw_lock
);
4533 adapter
->fw_done_rc
= 0;
4534 reinit_completion(&adapter
->fw_done
);
4536 rc
= ibmvnic_send_crq(adapter
, &crq
);
4538 mutex_unlock(&adapter
->fw_lock
);
4542 rc
= ibmvnic_wait_for_completion(adapter
, &adapter
->fw_done
, 10000);
4544 mutex_unlock(&adapter
->fw_lock
);
4548 mutex_unlock(&adapter
->fw_lock
);
4549 return adapter
->fw_done_rc
? -EIO
: 0;
4552 static int handle_query_phys_parms_rsp(union ibmvnic_crq
*crq
,
4553 struct ibmvnic_adapter
*adapter
)
4555 struct net_device
*netdev
= adapter
->netdev
;
4557 __be32 rspeed
= cpu_to_be32(crq
->query_phys_parms_rsp
.speed
);
4559 rc
= crq
->query_phys_parms_rsp
.rc
.code
;
4561 netdev_err(netdev
, "Error %d in QUERY_PHYS_PARMS\n", rc
);
4565 case IBMVNIC_10MBPS
:
4566 adapter
->speed
= SPEED_10
;
4568 case IBMVNIC_100MBPS
:
4569 adapter
->speed
= SPEED_100
;
4572 adapter
->speed
= SPEED_1000
;
4575 adapter
->speed
= SPEED_10000
;
4577 case IBMVNIC_25GBPS
:
4578 adapter
->speed
= SPEED_25000
;
4580 case IBMVNIC_40GBPS
:
4581 adapter
->speed
= SPEED_40000
;
4583 case IBMVNIC_50GBPS
:
4584 adapter
->speed
= SPEED_50000
;
4586 case IBMVNIC_100GBPS
:
4587 adapter
->speed
= SPEED_100000
;
4590 if (netif_carrier_ok(netdev
))
4591 netdev_warn(netdev
, "Unknown speed 0x%08x\n", rspeed
);
4592 adapter
->speed
= SPEED_UNKNOWN
;
4594 if (crq
->query_phys_parms_rsp
.flags1
& IBMVNIC_FULL_DUPLEX
)
4595 adapter
->duplex
= DUPLEX_FULL
;
4596 else if (crq
->query_phys_parms_rsp
.flags1
& IBMVNIC_HALF_DUPLEX
)
4597 adapter
->duplex
= DUPLEX_HALF
;
4599 adapter
->duplex
= DUPLEX_UNKNOWN
;
4604 static void ibmvnic_handle_crq(union ibmvnic_crq
*crq
,
4605 struct ibmvnic_adapter
*adapter
)
4607 struct ibmvnic_generic_crq
*gen_crq
= &crq
->generic
;
4608 struct net_device
*netdev
= adapter
->netdev
;
4609 struct device
*dev
= &adapter
->vdev
->dev
;
4610 u64
*u64_crq
= (u64
*)crq
;
4613 netdev_dbg(netdev
, "Handling CRQ: %016lx %016lx\n",
4614 (unsigned long int)cpu_to_be64(u64_crq
[0]),
4615 (unsigned long int)cpu_to_be64(u64_crq
[1]));
4616 switch (gen_crq
->first
) {
4617 case IBMVNIC_CRQ_INIT_RSP
:
4618 switch (gen_crq
->cmd
) {
4619 case IBMVNIC_CRQ_INIT
:
4620 dev_info(dev
, "Partner initialized\n");
4621 adapter
->from_passive_init
= true;
4622 adapter
->failover_pending
= false;
4623 if (!completion_done(&adapter
->init_done
)) {
4624 complete(&adapter
->init_done
);
4625 adapter
->init_done_rc
= -EIO
;
4627 ibmvnic_reset(adapter
, VNIC_RESET_FAILOVER
);
4629 case IBMVNIC_CRQ_INIT_COMPLETE
:
4630 dev_info(dev
, "Partner initialization complete\n");
4631 adapter
->crq
.active
= true;
4632 send_version_xchg(adapter
);
4635 dev_err(dev
, "Unknown crq cmd: %d\n", gen_crq
->cmd
);
4638 case IBMVNIC_CRQ_XPORT_EVENT
:
4639 netif_carrier_off(netdev
);
4640 adapter
->crq
.active
= false;
4641 /* terminate any thread waiting for a response
4644 if (!completion_done(&adapter
->fw_done
)) {
4645 adapter
->fw_done_rc
= -EIO
;
4646 complete(&adapter
->fw_done
);
4648 if (!completion_done(&adapter
->stats_done
))
4649 complete(&adapter
->stats_done
);
4650 if (test_bit(0, &adapter
->resetting
))
4651 adapter
->force_reset_recovery
= true;
4652 if (gen_crq
->cmd
== IBMVNIC_PARTITION_MIGRATED
) {
4653 dev_info(dev
, "Migrated, re-enabling adapter\n");
4654 ibmvnic_reset(adapter
, VNIC_RESET_MOBILITY
);
4655 } else if (gen_crq
->cmd
== IBMVNIC_DEVICE_FAILOVER
) {
4656 dev_info(dev
, "Backing device failover detected\n");
4657 adapter
->failover_pending
= true;
4659 /* The adapter lost the connection */
4660 dev_err(dev
, "Virtual Adapter failed (rc=%d)\n",
4662 ibmvnic_reset(adapter
, VNIC_RESET_FATAL
);
4665 case IBMVNIC_CRQ_CMD_RSP
:
4668 dev_err(dev
, "Got an invalid msg type 0x%02x\n",
4673 switch (gen_crq
->cmd
) {
4674 case VERSION_EXCHANGE_RSP
:
4675 rc
= crq
->version_exchange_rsp
.rc
.code
;
4677 dev_err(dev
, "Error %ld in VERSION_EXCHG_RSP\n", rc
);
4680 dev_info(dev
, "Partner protocol version is %d\n",
4681 crq
->version_exchange_rsp
.version
);
4682 if (be16_to_cpu(crq
->version_exchange_rsp
.version
) <
4685 be16_to_cpu(crq
->version_exchange_rsp
.version
);
4686 send_cap_queries(adapter
);
4688 case QUERY_CAPABILITY_RSP
:
4689 handle_query_cap_rsp(crq
, adapter
);
4692 handle_query_map_rsp(crq
, adapter
);
4694 case REQUEST_MAP_RSP
:
4695 adapter
->fw_done_rc
= crq
->request_map_rsp
.rc
.code
;
4696 complete(&adapter
->fw_done
);
4698 case REQUEST_UNMAP_RSP
:
4699 handle_request_unmap_rsp(crq
, adapter
);
4701 case REQUEST_CAPABILITY_RSP
:
4702 handle_request_cap_rsp(crq
, adapter
);
4705 netdev_dbg(netdev
, "Got Login Response\n");
4706 handle_login_rsp(crq
, adapter
);
4708 case LOGICAL_LINK_STATE_RSP
:
4710 "Got Logical Link State Response, state: %d rc: %d\n",
4711 crq
->logical_link_state_rsp
.link_state
,
4712 crq
->logical_link_state_rsp
.rc
.code
);
4713 adapter
->logical_link_state
=
4714 crq
->logical_link_state_rsp
.link_state
;
4715 adapter
->init_done_rc
= crq
->logical_link_state_rsp
.rc
.code
;
4716 complete(&adapter
->init_done
);
4718 case LINK_STATE_INDICATION
:
4719 netdev_dbg(netdev
, "Got Logical Link State Indication\n");
4720 adapter
->phys_link_state
=
4721 crq
->link_state_indication
.phys_link_state
;
4722 adapter
->logical_link_state
=
4723 crq
->link_state_indication
.logical_link_state
;
4724 if (adapter
->phys_link_state
&& adapter
->logical_link_state
)
4725 netif_carrier_on(netdev
);
4727 netif_carrier_off(netdev
);
4729 case CHANGE_MAC_ADDR_RSP
:
4730 netdev_dbg(netdev
, "Got MAC address change Response\n");
4731 adapter
->fw_done_rc
= handle_change_mac_rsp(crq
, adapter
);
4733 case ERROR_INDICATION
:
4734 netdev_dbg(netdev
, "Got Error Indication\n");
4735 handle_error_indication(crq
, adapter
);
4737 case REQUEST_STATISTICS_RSP
:
4738 netdev_dbg(netdev
, "Got Statistics Response\n");
4739 complete(&adapter
->stats_done
);
4741 case QUERY_IP_OFFLOAD_RSP
:
4742 netdev_dbg(netdev
, "Got Query IP offload Response\n");
4743 handle_query_ip_offload_rsp(adapter
);
4745 case MULTICAST_CTRL_RSP
:
4746 netdev_dbg(netdev
, "Got multicast control Response\n");
4748 case CONTROL_IP_OFFLOAD_RSP
:
4749 netdev_dbg(netdev
, "Got Control IP offload Response\n");
4750 dma_unmap_single(dev
, adapter
->ip_offload_ctrl_tok
,
4751 sizeof(adapter
->ip_offload_ctrl
),
4753 complete(&adapter
->init_done
);
4755 case COLLECT_FW_TRACE_RSP
:
4756 netdev_dbg(netdev
, "Got Collect firmware trace Response\n");
4757 complete(&adapter
->fw_done
);
4759 case GET_VPD_SIZE_RSP
:
4760 handle_vpd_size_rsp(crq
, adapter
);
4763 handle_vpd_rsp(crq
, adapter
);
4765 case QUERY_PHYS_PARMS_RSP
:
4766 adapter
->fw_done_rc
= handle_query_phys_parms_rsp(crq
, adapter
);
4767 complete(&adapter
->fw_done
);
4770 netdev_err(netdev
, "Got an invalid cmd type 0x%02x\n",
4775 static irqreturn_t
ibmvnic_interrupt(int irq
, void *instance
)
4777 struct ibmvnic_adapter
*adapter
= instance
;
4779 tasklet_schedule(&adapter
->tasklet
);
4783 static void ibmvnic_tasklet(void *data
)
4785 struct ibmvnic_adapter
*adapter
= data
;
4786 struct ibmvnic_crq_queue
*queue
= &adapter
->crq
;
4787 union ibmvnic_crq
*crq
;
4788 unsigned long flags
;
4791 spin_lock_irqsave(&queue
->lock
, flags
);
4793 /* Pull all the valid messages off the CRQ */
4794 while ((crq
= ibmvnic_next_crq(adapter
)) != NULL
) {
4795 ibmvnic_handle_crq(crq
, adapter
);
4796 crq
->generic
.first
= 0;
4799 /* remain in tasklet until all
4800 * capabilities responses are received
4802 if (!adapter
->wait_capability
)
4805 /* if capabilities CRQ's were sent in this tasklet, the following
4806 * tasklet must wait until all responses are received
4808 if (atomic_read(&adapter
->running_cap_crqs
) != 0)
4809 adapter
->wait_capability
= true;
4810 spin_unlock_irqrestore(&queue
->lock
, flags
);
4813 static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter
*adapter
)
4815 struct vio_dev
*vdev
= adapter
->vdev
;
4819 rc
= plpar_hcall_norets(H_ENABLE_CRQ
, vdev
->unit_address
);
4820 } while (rc
== H_IN_PROGRESS
|| rc
== H_BUSY
|| H_IS_LONG_BUSY(rc
));
4823 dev_err(&vdev
->dev
, "Error enabling adapter (rc=%d)\n", rc
);
4828 static int ibmvnic_reset_crq(struct ibmvnic_adapter
*adapter
)
4830 struct ibmvnic_crq_queue
*crq
= &adapter
->crq
;
4831 struct device
*dev
= &adapter
->vdev
->dev
;
4832 struct vio_dev
*vdev
= adapter
->vdev
;
4837 rc
= plpar_hcall_norets(H_FREE_CRQ
, vdev
->unit_address
);
4838 } while (rc
== H_BUSY
|| H_IS_LONG_BUSY(rc
));
4840 /* Clean out the queue */
4841 memset(crq
->msgs
, 0, PAGE_SIZE
);
4843 crq
->active
= false;
4845 /* And re-open it again */
4846 rc
= plpar_hcall_norets(H_REG_CRQ
, vdev
->unit_address
,
4847 crq
->msg_token
, PAGE_SIZE
);
4850 /* Adapter is good, but other end is not ready */
4851 dev_warn(dev
, "Partner adapter not ready\n");
4853 dev_warn(dev
, "Couldn't register crq (rc=%d)\n", rc
);
4858 static void release_crq_queue(struct ibmvnic_adapter
*adapter
)
4860 struct ibmvnic_crq_queue
*crq
= &adapter
->crq
;
4861 struct vio_dev
*vdev
= adapter
->vdev
;
4867 netdev_dbg(adapter
->netdev
, "Releasing CRQ\n");
4868 free_irq(vdev
->irq
, adapter
);
4869 tasklet_kill(&adapter
->tasklet
);
4871 rc
= plpar_hcall_norets(H_FREE_CRQ
, vdev
->unit_address
);
4872 } while (rc
== H_BUSY
|| H_IS_LONG_BUSY(rc
));
4874 dma_unmap_single(&vdev
->dev
, crq
->msg_token
, PAGE_SIZE
,
4876 free_page((unsigned long)crq
->msgs
);
4878 crq
->active
= false;
4881 static int init_crq_queue(struct ibmvnic_adapter
*adapter
)
4883 struct ibmvnic_crq_queue
*crq
= &adapter
->crq
;
4884 struct device
*dev
= &adapter
->vdev
->dev
;
4885 struct vio_dev
*vdev
= adapter
->vdev
;
4886 int rc
, retrc
= -ENOMEM
;
4891 crq
->msgs
= (union ibmvnic_crq
*)get_zeroed_page(GFP_KERNEL
);
4892 /* Should we allocate more than one page? */
4897 crq
->size
= PAGE_SIZE
/ sizeof(*crq
->msgs
);
4898 crq
->msg_token
= dma_map_single(dev
, crq
->msgs
, PAGE_SIZE
,
4900 if (dma_mapping_error(dev
, crq
->msg_token
))
4903 rc
= plpar_hcall_norets(H_REG_CRQ
, vdev
->unit_address
,
4904 crq
->msg_token
, PAGE_SIZE
);
4906 if (rc
== H_RESOURCE
)
4907 /* maybe kexecing and resource is busy. try a reset */
4908 rc
= ibmvnic_reset_crq(adapter
);
4911 if (rc
== H_CLOSED
) {
4912 dev_warn(dev
, "Partner adapter not ready\n");
4914 dev_warn(dev
, "Error %d opening adapter\n", rc
);
4915 goto reg_crq_failed
;
4920 tasklet_init(&adapter
->tasklet
, (void *)ibmvnic_tasklet
,
4921 (unsigned long)adapter
);
4923 netdev_dbg(adapter
->netdev
, "registering irq 0x%x\n", vdev
->irq
);
4924 snprintf(crq
->name
, sizeof(crq
->name
), "ibmvnic-%x",
4925 adapter
->vdev
->unit_address
);
4926 rc
= request_irq(vdev
->irq
, ibmvnic_interrupt
, 0, crq
->name
, adapter
);
4928 dev_err(dev
, "Couldn't register irq 0x%x. rc=%d\n",
4930 goto req_irq_failed
;
4933 rc
= vio_enable_interrupts(vdev
);
4935 dev_err(dev
, "Error %d enabling interrupts\n", rc
);
4936 goto req_irq_failed
;
4940 spin_lock_init(&crq
->lock
);
4945 tasklet_kill(&adapter
->tasklet
);
4947 rc
= plpar_hcall_norets(H_FREE_CRQ
, vdev
->unit_address
);
4948 } while (rc
== H_BUSY
|| H_IS_LONG_BUSY(rc
));
4950 dma_unmap_single(dev
, crq
->msg_token
, PAGE_SIZE
, DMA_BIDIRECTIONAL
);
4952 free_page((unsigned long)crq
->msgs
);
4957 static int ibmvnic_reset_init(struct ibmvnic_adapter
*adapter
)
4959 struct device
*dev
= &adapter
->vdev
->dev
;
4960 unsigned long timeout
= msecs_to_jiffies(30000);
4961 u64 old_num_rx_queues
, old_num_tx_queues
;
4964 adapter
->from_passive_init
= false;
4966 old_num_rx_queues
= adapter
->req_rx_queues
;
4967 old_num_tx_queues
= adapter
->req_tx_queues
;
4969 reinit_completion(&adapter
->init_done
);
4970 adapter
->init_done_rc
= 0;
4971 ibmvnic_send_crq_init(adapter
);
4972 if (!wait_for_completion_timeout(&adapter
->init_done
, timeout
)) {
4973 dev_err(dev
, "Initialization sequence timed out\n");
4977 if (adapter
->init_done_rc
) {
4978 release_crq_queue(adapter
);
4979 return adapter
->init_done_rc
;
4982 if (adapter
->from_passive_init
) {
4983 adapter
->state
= VNIC_OPEN
;
4984 adapter
->from_passive_init
= false;
4988 if (test_bit(0, &adapter
->resetting
) && !adapter
->wait_for_reset
&&
4989 adapter
->reset_reason
!= VNIC_RESET_MOBILITY
) {
4990 if (adapter
->req_rx_queues
!= old_num_rx_queues
||
4991 adapter
->req_tx_queues
!= old_num_tx_queues
) {
4992 release_sub_crqs(adapter
, 0);
4993 rc
= init_sub_crqs(adapter
);
4995 rc
= reset_sub_crq_queues(adapter
);
4998 rc
= init_sub_crqs(adapter
);
5002 dev_err(dev
, "Initialization of sub crqs failed\n");
5003 release_crq_queue(adapter
);
5007 rc
= init_sub_crq_irqs(adapter
);
5009 dev_err(dev
, "Failed to initialize sub crq irqs\n");
5010 release_crq_queue(adapter
);
5016 static int ibmvnic_init(struct ibmvnic_adapter
*adapter
)
5018 struct device
*dev
= &adapter
->vdev
->dev
;
5019 unsigned long timeout
= msecs_to_jiffies(30000);
5022 adapter
->from_passive_init
= false;
5024 adapter
->init_done_rc
= 0;
5025 ibmvnic_send_crq_init(adapter
);
5026 if (!wait_for_completion_timeout(&adapter
->init_done
, timeout
)) {
5027 dev_err(dev
, "Initialization sequence timed out\n");
5031 if (adapter
->init_done_rc
) {
5032 release_crq_queue(adapter
);
5033 return adapter
->init_done_rc
;
5036 if (adapter
->from_passive_init
) {
5037 adapter
->state
= VNIC_OPEN
;
5038 adapter
->from_passive_init
= false;
5042 rc
= init_sub_crqs(adapter
);
5044 dev_err(dev
, "Initialization of sub crqs failed\n");
5045 release_crq_queue(adapter
);
5049 rc
= init_sub_crq_irqs(adapter
);
5051 dev_err(dev
, "Failed to initialize sub crq irqs\n");
5052 release_crq_queue(adapter
);
5058 static struct device_attribute dev_attr_failover
;
5060 static int ibmvnic_probe(struct vio_dev
*dev
, const struct vio_device_id
*id
)
5062 struct ibmvnic_adapter
*adapter
;
5063 struct net_device
*netdev
;
5064 unsigned char *mac_addr_p
;
5067 dev_dbg(&dev
->dev
, "entering ibmvnic_probe for UA 0x%x\n",
5070 mac_addr_p
= (unsigned char *)vio_get_attribute(dev
,
5071 VETH_MAC_ADDR
, NULL
);
5074 "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n",
5075 __FILE__
, __LINE__
);
5079 netdev
= alloc_etherdev_mq(sizeof(struct ibmvnic_adapter
),
5080 IBMVNIC_MAX_QUEUES
);
5084 adapter
= netdev_priv(netdev
);
5085 adapter
->state
= VNIC_PROBING
;
5086 dev_set_drvdata(&dev
->dev
, netdev
);
5087 adapter
->vdev
= dev
;
5088 adapter
->netdev
= netdev
;
5090 ether_addr_copy(adapter
->mac_addr
, mac_addr_p
);
5091 ether_addr_copy(netdev
->dev_addr
, adapter
->mac_addr
);
5092 netdev
->irq
= dev
->irq
;
5093 netdev
->netdev_ops
= &ibmvnic_netdev_ops
;
5094 netdev
->ethtool_ops
= &ibmvnic_ethtool_ops
;
5095 SET_NETDEV_DEV(netdev
, &dev
->dev
);
5097 spin_lock_init(&adapter
->stats_lock
);
5099 INIT_WORK(&adapter
->ibmvnic_reset
, __ibmvnic_reset
);
5100 INIT_DELAYED_WORK(&adapter
->ibmvnic_delayed_reset
,
5101 __ibmvnic_delayed_reset
);
5102 INIT_LIST_HEAD(&adapter
->rwi_list
);
5103 spin_lock_init(&adapter
->rwi_lock
);
5104 spin_lock_init(&adapter
->state_lock
);
5105 mutex_init(&adapter
->fw_lock
);
5106 init_completion(&adapter
->init_done
);
5107 init_completion(&adapter
->fw_done
);
5108 init_completion(&adapter
->reset_done
);
5109 init_completion(&adapter
->stats_done
);
5110 clear_bit(0, &adapter
->resetting
);
5113 rc
= init_crq_queue(adapter
);
5115 dev_err(&dev
->dev
, "Couldn't initialize crq. rc=%d\n",
5117 goto ibmvnic_init_fail
;
5120 rc
= ibmvnic_init(adapter
);
5121 if (rc
&& rc
!= EAGAIN
)
5122 goto ibmvnic_init_fail
;
5123 } while (rc
== EAGAIN
);
5125 rc
= init_stats_buffers(adapter
);
5127 goto ibmvnic_init_fail
;
5129 rc
= init_stats_token(adapter
);
5131 goto ibmvnic_stats_fail
;
5133 netdev
->mtu
= adapter
->req_mtu
- ETH_HLEN
;
5134 netdev
->min_mtu
= adapter
->min_mtu
- ETH_HLEN
;
5135 netdev
->max_mtu
= adapter
->max_mtu
- ETH_HLEN
;
5137 rc
= device_create_file(&dev
->dev
, &dev_attr_failover
);
5139 goto ibmvnic_dev_file_err
;
5141 netif_carrier_off(netdev
);
5142 rc
= register_netdev(netdev
);
5144 dev_err(&dev
->dev
, "failed to register netdev rc=%d\n", rc
);
5145 goto ibmvnic_register_fail
;
5147 dev_info(&dev
->dev
, "ibmvnic registered\n");
5149 adapter
->state
= VNIC_PROBED
;
5151 adapter
->wait_for_reset
= false;
5155 ibmvnic_register_fail
:
5156 device_remove_file(&dev
->dev
, &dev_attr_failover
);
5158 ibmvnic_dev_file_err
:
5159 release_stats_token(adapter
);
5162 release_stats_buffers(adapter
);
5165 release_sub_crqs(adapter
, 1);
5166 release_crq_queue(adapter
);
5167 mutex_destroy(&adapter
->fw_lock
);
5168 free_netdev(netdev
);
5173 static int ibmvnic_remove(struct vio_dev
*dev
)
5175 struct net_device
*netdev
= dev_get_drvdata(&dev
->dev
);
5176 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
5177 unsigned long flags
;
5179 spin_lock_irqsave(&adapter
->state_lock
, flags
);
5180 if (adapter
->state
== VNIC_RESETTING
) {
5181 spin_unlock_irqrestore(&adapter
->state_lock
, flags
);
5185 adapter
->state
= VNIC_REMOVING
;
5186 spin_unlock_irqrestore(&adapter
->state_lock
, flags
);
5189 unregister_netdevice(netdev
);
5191 release_resources(adapter
);
5192 release_sub_crqs(adapter
, 1);
5193 release_crq_queue(adapter
);
5195 release_stats_token(adapter
);
5196 release_stats_buffers(adapter
);
5198 adapter
->state
= VNIC_REMOVED
;
5201 mutex_destroy(&adapter
->fw_lock
);
5202 device_remove_file(&dev
->dev
, &dev_attr_failover
);
5203 free_netdev(netdev
);
5204 dev_set_drvdata(&dev
->dev
, NULL
);
5209 static ssize_t
failover_store(struct device
*dev
, struct device_attribute
*attr
,
5210 const char *buf
, size_t count
)
5212 struct net_device
*netdev
= dev_get_drvdata(dev
);
5213 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
5214 unsigned long retbuf
[PLPAR_HCALL_BUFSIZE
];
5215 __be64 session_token
;
5218 if (!sysfs_streq(buf
, "1"))
5221 rc
= plpar_hcall(H_VIOCTL
, retbuf
, adapter
->vdev
->unit_address
,
5222 H_GET_SESSION_TOKEN
, 0, 0, 0);
5224 netdev_err(netdev
, "Couldn't retrieve session token, rc %ld\n",
5229 session_token
= (__be64
)retbuf
[0];
5230 netdev_dbg(netdev
, "Initiating client failover, session id %llx\n",
5231 be64_to_cpu(session_token
));
5232 rc
= plpar_hcall_norets(H_VIOCTL
, adapter
->vdev
->unit_address
,
5233 H_SESSION_ERR_DETECTED
, session_token
, 0, 0);
5235 netdev_err(netdev
, "Client initiated failover failed, rc %ld\n",
5243 static DEVICE_ATTR_WO(failover
);
5245 static unsigned long ibmvnic_get_desired_dma(struct vio_dev
*vdev
)
5247 struct net_device
*netdev
= dev_get_drvdata(&vdev
->dev
);
5248 struct ibmvnic_adapter
*adapter
;
5249 struct iommu_table
*tbl
;
5250 unsigned long ret
= 0;
5253 tbl
= get_iommu_table_base(&vdev
->dev
);
5255 /* netdev inits at probe time along with the structures we need below*/
5257 return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT
, tbl
);
5259 adapter
= netdev_priv(netdev
);
5261 ret
+= PAGE_SIZE
; /* the crq message queue */
5262 ret
+= IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics
), tbl
);
5264 for (i
= 0; i
< adapter
->req_tx_queues
+ adapter
->req_rx_queues
; i
++)
5265 ret
+= 4 * PAGE_SIZE
; /* the scrq message queue */
5267 for (i
= 0; i
< be32_to_cpu(adapter
->login_rsp_buf
->num_rxadd_subcrqs
);
5269 ret
+= adapter
->rx_pool
[i
].size
*
5270 IOMMU_PAGE_ALIGN(adapter
->rx_pool
[i
].buff_size
, tbl
);
5275 static int ibmvnic_resume(struct device
*dev
)
5277 struct net_device
*netdev
= dev_get_drvdata(dev
);
5278 struct ibmvnic_adapter
*adapter
= netdev_priv(netdev
);
5280 if (adapter
->state
!= VNIC_OPEN
)
5283 tasklet_schedule(&adapter
->tasklet
);
5288 static const struct vio_device_id ibmvnic_device_table
[] = {
5289 {"network", "IBM,vnic"},
5292 MODULE_DEVICE_TABLE(vio
, ibmvnic_device_table
);
5294 static const struct dev_pm_ops ibmvnic_pm_ops
= {
5295 .resume
= ibmvnic_resume
5298 static struct vio_driver ibmvnic_driver
= {
5299 .id_table
= ibmvnic_device_table
,
5300 .probe
= ibmvnic_probe
,
5301 .remove
= ibmvnic_remove
,
5302 .get_desired_dma
= ibmvnic_get_desired_dma
,
5303 .name
= ibmvnic_driver_name
,
5304 .pm
= &ibmvnic_pm_ops
,
5307 /* module functions */
5308 static int __init
ibmvnic_module_init(void)
5310 pr_info("%s: %s %s\n", ibmvnic_driver_name
, ibmvnic_driver_string
,
5311 IBMVNIC_DRIVER_VERSION
);
5313 return vio_register_driver(&ibmvnic_driver
);
5316 static void __exit
ibmvnic_module_exit(void)
5318 vio_unregister_driver(&ibmvnic_driver
);
5321 module_init(ibmvnic_module_init
);
5322 module_exit(ibmvnic_module_exit
);