1 /**************************************************************************/
3 /* IBM System i and System p Virtual NIC Device Driver */
4 /* Copyright (C) 2014 IBM Corp. */
5 /* Santiago Leon (santi_leon@yahoo.com) */
6 /* Thomas Falcon (tlfalcon@linux.vnet.ibm.com) */
7 /* John Allen (jallen@linux.vnet.ibm.com) */
9 /* This program is free software; you can redistribute it and/or modify */
10 /* it under the terms of the GNU General Public License as published by */
11 /* the Free Software Foundation; either version 2 of the License, or */
12 /* (at your option) any later version. */
14 /* This program is distributed in the hope that it will be useful, */
15 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */
16 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
17 /* GNU General Public License for more details. */
19 /* You should have received a copy of the GNU General Public License */
20 /* along with this program. */
22 /* This module contains the implementation of a virtual ethernet device */
23 /* for use with IBM i/p Series LPAR Linux. It utilizes the logical LAN */
24 /* option of the RS/6000 Platform Architecture to interface with virtual */
25 /* ethernet NICs that are presented to the partition by the hypervisor. */
27 /* Messages are passed between the VNIC driver and the VNIC server using */
28 /* Command/Response Queues (CRQs) and sub CRQs (sCRQs). CRQs are used to */
29 /* issue and receive commands that initiate communication with the server */
30 /* on driver initialization. Sub CRQs (sCRQs) are similar to CRQs, but */
31 /* are used by the driver to notify the server that a packet is */
32 /* ready for transmission or that a buffer has been added to receive a */
33 /* packet. Subsequently, sCRQs are used by the server to notify the */
34 /* driver that a packet transmission has been completed or that a packet */
35 /* has been received and placed in a waiting buffer. */
37 /* In lieu of a more conventional "on-the-fly" DMA mapping strategy in */
38 /* which skbs are DMA mapped and immediately unmapped when the transmit */
39 /* or receive has been completed, the VNIC driver is required to use */
40 /* "long term mapping". This entails that large, continuous DMA mapped */
41 /* buffers are allocated on driver initialization and these buffers are */
42 /* then continuously reused to pass skbs to and from the VNIC server. */
44 /**************************************************************************/
46 #include <linux/module.h>
47 #include <linux/moduleparam.h>
48 #include <linux/types.h>
49 #include <linux/errno.h>
50 #include <linux/completion.h>
51 #include <linux/ioport.h>
52 #include <linux/dma-mapping.h>
53 #include <linux/kernel.h>
54 #include <linux/netdevice.h>
55 #include <linux/etherdevice.h>
56 #include <linux/skbuff.h>
57 #include <linux/init.h>
58 #include <linux/delay.h>
60 #include <linux/ethtool.h>
61 #include <linux/proc_fs.h>
62 #include <linux/if_arp.h>
65 #include <linux/ipv6.h>
66 #include <linux/irq.h>
67 #include <linux/kthread.h>
68 #include <linux/seq_file.h>
69 #include <linux/interrupt.h>
70 #include <net/net_namespace.h>
71 #include <asm/hvcall.h>
72 #include <linux/atomic.h>
74 #include <asm/iommu.h>
75 #include <linux/uaccess.h>
76 #include <asm/firmware.h>
77 #include <linux/workqueue.h>
78 #include <linux/if_vlan.h>
79 #include <linux/utsname.h>
83 static const char ibmvnic_driver_name[] = "ibmvnic";
84 static const char ibmvnic_driver_string[] = "IBM System i/p Virtual NIC Driver";
86 MODULE_AUTHOR("Santiago Leon");
87 MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver");
88 MODULE_LICENSE("GPL");
89 MODULE_VERSION(IBMVNIC_DRIVER_VERSION);
91 static int ibmvnic_version = IBMVNIC_INITIAL_VERSION;
92 static int ibmvnic_remove(struct vio_dev *);
93 static void release_sub_crqs(struct ibmvnic_adapter *, bool);
94 static int ibmvnic_reset_crq(struct ibmvnic_adapter *);
95 static int ibmvnic_send_crq_init(struct ibmvnic_adapter *);
96 static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *);
97 static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *);
98 static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle,
99 union sub_crq *sub_crq);
100 static int send_subcrq_indirect(struct ibmvnic_adapter *, u64, u64, u64);
101 static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance);
102 static int enable_scrq_irq(struct ibmvnic_adapter *,
103 struct ibmvnic_sub_crq_queue *);
104 static int disable_scrq_irq(struct ibmvnic_adapter *,
105 struct ibmvnic_sub_crq_queue *);
106 static int pending_scrq(struct ibmvnic_adapter *,
107 struct ibmvnic_sub_crq_queue *);
108 static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *,
109 struct ibmvnic_sub_crq_queue *);
110 static int ibmvnic_poll(struct napi_struct *napi, int data);
111 static void send_map_query(struct ibmvnic_adapter *adapter);
112 static int send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8);
113 static int send_request_unmap(struct ibmvnic_adapter *, u8);
114 static int send_login(struct ibmvnic_adapter *adapter);
115 static void send_cap_queries(struct ibmvnic_adapter *adapter);
116 static int init_sub_crqs(struct ibmvnic_adapter *);
117 static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter);
118 static int ibmvnic_init(struct ibmvnic_adapter *);
119 static int ibmvnic_reset_init(struct ibmvnic_adapter *);
120 static void release_crq_queue(struct ibmvnic_adapter *);
121 static int __ibmvnic_set_mac(struct net_device *netdev, struct sockaddr *p);
122 static int init_crq_queue(struct ibmvnic_adapter *adapter);
123 static int send_query_phys_parms(struct ibmvnic_adapter *adapter);
125 struct ibmvnic_stat {
126 char name[ETH_GSTRING_LEN];
130 #define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \
131 offsetof(struct ibmvnic_statistics, stat))
132 #define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off)))
134 static const struct ibmvnic_stat ibmvnic_stats[] = {
135 {"rx_packets", IBMVNIC_STAT_OFF(rx_packets)},
136 {"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)},
137 {"tx_packets", IBMVNIC_STAT_OFF(tx_packets)},
138 {"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)},
139 {"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)},
140 {"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)},
141 {"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)},
142 {"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)},
143 {"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)},
144 {"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)},
145 {"align_errors", IBMVNIC_STAT_OFF(align_errors)},
146 {"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)},
147 {"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)},
148 {"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)},
149 {"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)},
150 {"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)},
151 {"late_collisions", IBMVNIC_STAT_OFF(late_collisions)},
152 {"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)},
153 {"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)},
154 {"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)},
155 {"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)},
156 {"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)},
159 static long h_reg_sub_crq(unsigned long unit_address, unsigned long token,
160 unsigned long length, unsigned long *number,
163 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
166 rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length);
173 static int alloc_long_term_buff(struct ibmvnic_adapter *adapter,
174 struct ibmvnic_long_term_buff *ltb, int size)
176 struct device *dev = &adapter->vdev->dev;
180 ltb->buff = dma_alloc_coherent(dev, ltb->size, <b->addr,
184 dev_err(dev, "Couldn't alloc long term buffer\n");
187 ltb->map_id = adapter->map_id;
190 init_completion(&adapter->fw_done);
191 rc = send_request_map(adapter, ltb->addr,
192 ltb->size, ltb->map_id);
194 dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
197 wait_for_completion(&adapter->fw_done);
199 if (adapter->fw_done_rc) {
200 dev_err(dev, "Couldn't map long term buffer,rc = %d\n",
201 adapter->fw_done_rc);
202 dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
208 static void free_long_term_buff(struct ibmvnic_adapter *adapter,
209 struct ibmvnic_long_term_buff *ltb)
211 struct device *dev = &adapter->vdev->dev;
216 if (adapter->reset_reason != VNIC_RESET_FAILOVER &&
217 adapter->reset_reason != VNIC_RESET_MOBILITY)
218 send_request_unmap(adapter, ltb->map_id);
219 dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
222 static int reset_long_term_buff(struct ibmvnic_adapter *adapter,
223 struct ibmvnic_long_term_buff *ltb)
227 memset(ltb->buff, 0, ltb->size);
229 init_completion(&adapter->fw_done);
230 rc = send_request_map(adapter, ltb->addr, ltb->size, ltb->map_id);
233 wait_for_completion(&adapter->fw_done);
235 if (adapter->fw_done_rc) {
236 dev_info(&adapter->vdev->dev,
237 "Reset failed, attempting to free and reallocate buffer\n");
238 free_long_term_buff(adapter, ltb);
239 return alloc_long_term_buff(adapter, ltb, ltb->size);
244 static void deactivate_rx_pools(struct ibmvnic_adapter *adapter)
248 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
250 adapter->rx_pool[i].active = 0;
253 static void replenish_rx_pool(struct ibmvnic_adapter *adapter,
254 struct ibmvnic_rx_pool *pool)
256 int count = pool->size - atomic_read(&pool->available);
257 struct device *dev = &adapter->vdev->dev;
258 int buffers_added = 0;
259 unsigned long lpar_rc;
260 union sub_crq sub_crq;
273 handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
274 be32_to_cpu(adapter->login_rsp_buf->
277 for (i = 0; i < count; ++i) {
278 skb = alloc_skb(pool->buff_size, GFP_ATOMIC);
280 dev_err(dev, "Couldn't replenish rx buff\n");
281 adapter->replenish_no_mem++;
285 index = pool->free_map[pool->next_free];
287 if (pool->rx_buff[index].skb)
288 dev_err(dev, "Inconsistent free_map!\n");
290 /* Copy the skb to the long term mapped DMA buffer */
291 offset = index * pool->buff_size;
292 dst = pool->long_term_buff.buff + offset;
293 memset(dst, 0, pool->buff_size);
294 dma_addr = pool->long_term_buff.addr + offset;
295 pool->rx_buff[index].data = dst;
297 pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP;
298 pool->rx_buff[index].dma = dma_addr;
299 pool->rx_buff[index].skb = skb;
300 pool->rx_buff[index].pool_index = pool->index;
301 pool->rx_buff[index].size = pool->buff_size;
303 memset(&sub_crq, 0, sizeof(sub_crq));
304 sub_crq.rx_add.first = IBMVNIC_CRQ_CMD;
305 sub_crq.rx_add.correlator =
306 cpu_to_be64((u64)&pool->rx_buff[index]);
307 sub_crq.rx_add.ioba = cpu_to_be32(dma_addr);
308 sub_crq.rx_add.map_id = pool->long_term_buff.map_id;
310 /* The length field of the sCRQ is defined to be 24 bits so the
311 * buffer size needs to be left shifted by a byte before it is
312 * converted to big endian to prevent the last byte from being
315 #ifdef __LITTLE_ENDIAN__
318 sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift);
320 lpar_rc = send_subcrq(adapter, handle_array[pool->index],
322 if (lpar_rc != H_SUCCESS)
326 adapter->replenish_add_buff_success++;
327 pool->next_free = (pool->next_free + 1) % pool->size;
329 atomic_add(buffers_added, &pool->available);
333 if (lpar_rc != H_PARAMETER && lpar_rc != H_CLOSED)
334 dev_err_ratelimited(dev, "rx: replenish packet buffer failed\n");
335 pool->free_map[pool->next_free] = index;
336 pool->rx_buff[index].skb = NULL;
338 dev_kfree_skb_any(skb);
339 adapter->replenish_add_buff_failure++;
340 atomic_add(buffers_added, &pool->available);
342 if (lpar_rc == H_CLOSED || adapter->failover_pending) {
343 /* Disable buffer pool replenishment and report carrier off if
344 * queue is closed or pending failover.
345 * Firmware guarantees that a signal will be sent to the
346 * driver, triggering a reset.
348 deactivate_rx_pools(adapter);
349 netif_carrier_off(adapter->netdev);
353 static void replenish_pools(struct ibmvnic_adapter *adapter)
357 adapter->replenish_task_cycles++;
358 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
360 if (adapter->rx_pool[i].active)
361 replenish_rx_pool(adapter, &adapter->rx_pool[i]);
365 static void release_stats_buffers(struct ibmvnic_adapter *adapter)
367 kfree(adapter->tx_stats_buffers);
368 kfree(adapter->rx_stats_buffers);
369 adapter->tx_stats_buffers = NULL;
370 adapter->rx_stats_buffers = NULL;
373 static int init_stats_buffers(struct ibmvnic_adapter *adapter)
375 adapter->tx_stats_buffers =
376 kcalloc(IBMVNIC_MAX_QUEUES,
377 sizeof(struct ibmvnic_tx_queue_stats),
379 if (!adapter->tx_stats_buffers)
382 adapter->rx_stats_buffers =
383 kcalloc(IBMVNIC_MAX_QUEUES,
384 sizeof(struct ibmvnic_rx_queue_stats),
386 if (!adapter->rx_stats_buffers)
392 static void release_stats_token(struct ibmvnic_adapter *adapter)
394 struct device *dev = &adapter->vdev->dev;
396 if (!adapter->stats_token)
399 dma_unmap_single(dev, adapter->stats_token,
400 sizeof(struct ibmvnic_statistics),
402 adapter->stats_token = 0;
405 static int init_stats_token(struct ibmvnic_adapter *adapter)
407 struct device *dev = &adapter->vdev->dev;
410 stok = dma_map_single(dev, &adapter->stats,
411 sizeof(struct ibmvnic_statistics),
413 if (dma_mapping_error(dev, stok)) {
414 dev_err(dev, "Couldn't map stats buffer\n");
418 adapter->stats_token = stok;
419 netdev_dbg(adapter->netdev, "Stats token initialized (%llx)\n", stok);
423 static int reset_rx_pools(struct ibmvnic_adapter *adapter)
425 struct ibmvnic_rx_pool *rx_pool;
430 size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
431 be32_to_cpu(adapter->login_rsp_buf->off_rxadd_buff_size));
433 rx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
434 for (i = 0; i < rx_scrqs; i++) {
435 rx_pool = &adapter->rx_pool[i];
437 netdev_dbg(adapter->netdev, "Re-setting rx_pool[%d]\n", i);
439 if (rx_pool->buff_size != be64_to_cpu(size_array[i])) {
440 free_long_term_buff(adapter, &rx_pool->long_term_buff);
441 rx_pool->buff_size = be64_to_cpu(size_array[i]);
442 alloc_long_term_buff(adapter, &rx_pool->long_term_buff,
446 rc = reset_long_term_buff(adapter,
447 &rx_pool->long_term_buff);
453 for (j = 0; j < rx_pool->size; j++)
454 rx_pool->free_map[j] = j;
456 memset(rx_pool->rx_buff, 0,
457 rx_pool->size * sizeof(struct ibmvnic_rx_buff));
459 atomic_set(&rx_pool->available, 0);
460 rx_pool->next_alloc = 0;
461 rx_pool->next_free = 0;
468 static void release_rx_pools(struct ibmvnic_adapter *adapter)
470 struct ibmvnic_rx_pool *rx_pool;
473 if (!adapter->rx_pool)
476 for (i = 0; i < adapter->num_active_rx_pools; i++) {
477 rx_pool = &adapter->rx_pool[i];
479 netdev_dbg(adapter->netdev, "Releasing rx_pool[%d]\n", i);
481 kfree(rx_pool->free_map);
482 free_long_term_buff(adapter, &rx_pool->long_term_buff);
484 if (!rx_pool->rx_buff)
487 for (j = 0; j < rx_pool->size; j++) {
488 if (rx_pool->rx_buff[j].skb) {
489 dev_kfree_skb_any(rx_pool->rx_buff[j].skb);
490 rx_pool->rx_buff[j].skb = NULL;
494 kfree(rx_pool->rx_buff);
497 kfree(adapter->rx_pool);
498 adapter->rx_pool = NULL;
499 adapter->num_active_rx_pools = 0;
502 static int init_rx_pools(struct net_device *netdev)
504 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
505 struct device *dev = &adapter->vdev->dev;
506 struct ibmvnic_rx_pool *rx_pool;
512 be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
513 size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
514 be32_to_cpu(adapter->login_rsp_buf->off_rxadd_buff_size));
516 adapter->rx_pool = kcalloc(rxadd_subcrqs,
517 sizeof(struct ibmvnic_rx_pool),
519 if (!adapter->rx_pool) {
520 dev_err(dev, "Failed to allocate rx pools\n");
524 adapter->num_active_rx_pools = rxadd_subcrqs;
526 for (i = 0; i < rxadd_subcrqs; i++) {
527 rx_pool = &adapter->rx_pool[i];
529 netdev_dbg(adapter->netdev,
530 "Initializing rx_pool[%d], %lld buffs, %lld bytes each\n",
531 i, adapter->req_rx_add_entries_per_subcrq,
532 be64_to_cpu(size_array[i]));
534 rx_pool->size = adapter->req_rx_add_entries_per_subcrq;
536 rx_pool->buff_size = be64_to_cpu(size_array[i]);
539 rx_pool->free_map = kcalloc(rx_pool->size, sizeof(int),
541 if (!rx_pool->free_map) {
542 release_rx_pools(adapter);
546 rx_pool->rx_buff = kcalloc(rx_pool->size,
547 sizeof(struct ibmvnic_rx_buff),
549 if (!rx_pool->rx_buff) {
550 dev_err(dev, "Couldn't alloc rx buffers\n");
551 release_rx_pools(adapter);
555 if (alloc_long_term_buff(adapter, &rx_pool->long_term_buff,
556 rx_pool->size * rx_pool->buff_size)) {
557 release_rx_pools(adapter);
561 for (j = 0; j < rx_pool->size; ++j)
562 rx_pool->free_map[j] = j;
564 atomic_set(&rx_pool->available, 0);
565 rx_pool->next_alloc = 0;
566 rx_pool->next_free = 0;
572 static int reset_one_tx_pool(struct ibmvnic_adapter *adapter,
573 struct ibmvnic_tx_pool *tx_pool)
577 rc = reset_long_term_buff(adapter, &tx_pool->long_term_buff);
581 memset(tx_pool->tx_buff, 0,
582 tx_pool->num_buffers *
583 sizeof(struct ibmvnic_tx_buff));
585 for (i = 0; i < tx_pool->num_buffers; i++)
586 tx_pool->free_map[i] = i;
588 tx_pool->consumer_index = 0;
589 tx_pool->producer_index = 0;
594 static int reset_tx_pools(struct ibmvnic_adapter *adapter)
599 tx_scrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
600 for (i = 0; i < tx_scrqs; i++) {
601 rc = reset_one_tx_pool(adapter, &adapter->tso_pool[i]);
604 rc = reset_one_tx_pool(adapter, &adapter->tx_pool[i]);
612 static void release_vpd_data(struct ibmvnic_adapter *adapter)
617 kfree(adapter->vpd->buff);
623 static void release_one_tx_pool(struct ibmvnic_adapter *adapter,
624 struct ibmvnic_tx_pool *tx_pool)
626 kfree(tx_pool->tx_buff);
627 kfree(tx_pool->free_map);
628 free_long_term_buff(adapter, &tx_pool->long_term_buff);
631 static void release_tx_pools(struct ibmvnic_adapter *adapter)
635 if (!adapter->tx_pool)
638 for (i = 0; i < adapter->num_active_tx_pools; i++) {
639 release_one_tx_pool(adapter, &adapter->tx_pool[i]);
640 release_one_tx_pool(adapter, &adapter->tso_pool[i]);
643 kfree(adapter->tx_pool);
644 adapter->tx_pool = NULL;
645 kfree(adapter->tso_pool);
646 adapter->tso_pool = NULL;
647 adapter->num_active_tx_pools = 0;
650 static int init_one_tx_pool(struct net_device *netdev,
651 struct ibmvnic_tx_pool *tx_pool,
652 int num_entries, int buf_size)
654 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
657 tx_pool->tx_buff = kcalloc(num_entries,
658 sizeof(struct ibmvnic_tx_buff),
660 if (!tx_pool->tx_buff)
663 if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff,
664 num_entries * buf_size))
667 tx_pool->free_map = kcalloc(num_entries, sizeof(int), GFP_KERNEL);
668 if (!tx_pool->free_map)
671 for (i = 0; i < num_entries; i++)
672 tx_pool->free_map[i] = i;
674 tx_pool->consumer_index = 0;
675 tx_pool->producer_index = 0;
676 tx_pool->num_buffers = num_entries;
677 tx_pool->buf_size = buf_size;
682 static int init_tx_pools(struct net_device *netdev)
684 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
688 tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
689 adapter->tx_pool = kcalloc(tx_subcrqs,
690 sizeof(struct ibmvnic_tx_pool), GFP_KERNEL);
691 if (!adapter->tx_pool)
694 adapter->tso_pool = kcalloc(tx_subcrqs,
695 sizeof(struct ibmvnic_tx_pool), GFP_KERNEL);
696 if (!adapter->tso_pool)
699 adapter->num_active_tx_pools = tx_subcrqs;
701 for (i = 0; i < tx_subcrqs; i++) {
702 rc = init_one_tx_pool(netdev, &adapter->tx_pool[i],
703 adapter->req_tx_entries_per_subcrq,
704 adapter->req_mtu + VLAN_HLEN);
706 release_tx_pools(adapter);
710 init_one_tx_pool(netdev, &adapter->tso_pool[i],
714 release_tx_pools(adapter);
722 static void ibmvnic_napi_enable(struct ibmvnic_adapter *adapter)
726 if (adapter->napi_enabled)
729 for (i = 0; i < adapter->req_rx_queues; i++)
730 napi_enable(&adapter->napi[i]);
732 adapter->napi_enabled = true;
735 static void ibmvnic_napi_disable(struct ibmvnic_adapter *adapter)
739 if (!adapter->napi_enabled)
742 for (i = 0; i < adapter->req_rx_queues; i++) {
743 netdev_dbg(adapter->netdev, "Disabling napi[%d]\n", i);
744 napi_disable(&adapter->napi[i]);
747 adapter->napi_enabled = false;
750 static int init_napi(struct ibmvnic_adapter *adapter)
754 adapter->napi = kcalloc(adapter->req_rx_queues,
755 sizeof(struct napi_struct), GFP_KERNEL);
759 for (i = 0; i < adapter->req_rx_queues; i++) {
760 netdev_dbg(adapter->netdev, "Adding napi[%d]\n", i);
761 netif_napi_add(adapter->netdev, &adapter->napi[i],
762 ibmvnic_poll, NAPI_POLL_WEIGHT);
765 adapter->num_active_rx_napi = adapter->req_rx_queues;
769 static void release_napi(struct ibmvnic_adapter *adapter)
776 for (i = 0; i < adapter->num_active_rx_napi; i++) {
777 netdev_dbg(adapter->netdev, "Releasing napi[%d]\n", i);
778 netif_napi_del(&adapter->napi[i]);
781 kfree(adapter->napi);
782 adapter->napi = NULL;
783 adapter->num_active_rx_napi = 0;
784 adapter->napi_enabled = false;
787 static int ibmvnic_login(struct net_device *netdev)
789 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
790 unsigned long timeout = msecs_to_jiffies(30000);
797 if (retry_count > IBMVNIC_MAX_QUEUES) {
798 netdev_warn(netdev, "Login attempts exceeded\n");
802 adapter->init_done_rc = 0;
803 reinit_completion(&adapter->init_done);
804 rc = send_login(adapter);
806 netdev_warn(netdev, "Unable to login\n");
810 if (!wait_for_completion_timeout(&adapter->init_done,
812 netdev_warn(netdev, "Login timed out\n");
816 if (adapter->init_done_rc == PARTIALSUCCESS) {
818 release_sub_crqs(adapter, 1);
822 "Received partial success, retrying...\n");
823 adapter->init_done_rc = 0;
824 reinit_completion(&adapter->init_done);
825 send_cap_queries(adapter);
826 if (!wait_for_completion_timeout(&adapter->init_done,
829 "Capabilities query timed out\n");
833 rc = init_sub_crqs(adapter);
836 "SCRQ initialization failed\n");
840 rc = init_sub_crq_irqs(adapter);
843 "SCRQ irq initialization failed\n");
846 } else if (adapter->init_done_rc) {
847 netdev_warn(netdev, "Adapter login failed\n");
852 /* handle pending MAC address changes after successful login */
853 if (adapter->mac_change_pending) {
854 __ibmvnic_set_mac(netdev, &adapter->desired.mac);
855 adapter->mac_change_pending = false;
861 static void release_login_buffer(struct ibmvnic_adapter *adapter)
863 kfree(adapter->login_buf);
864 adapter->login_buf = NULL;
867 static void release_login_rsp_buffer(struct ibmvnic_adapter *adapter)
869 kfree(adapter->login_rsp_buf);
870 adapter->login_rsp_buf = NULL;
873 static void release_resources(struct ibmvnic_adapter *adapter)
875 release_vpd_data(adapter);
877 release_tx_pools(adapter);
878 release_rx_pools(adapter);
880 release_napi(adapter);
881 release_login_rsp_buffer(adapter);
884 static int set_link_state(struct ibmvnic_adapter *adapter, u8 link_state)
886 struct net_device *netdev = adapter->netdev;
887 unsigned long timeout = msecs_to_jiffies(30000);
888 union ibmvnic_crq crq;
892 netdev_dbg(netdev, "setting link state %d\n", link_state);
894 memset(&crq, 0, sizeof(crq));
895 crq.logical_link_state.first = IBMVNIC_CRQ_CMD;
896 crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
897 crq.logical_link_state.link_state = link_state;
902 reinit_completion(&adapter->init_done);
903 rc = ibmvnic_send_crq(adapter, &crq);
905 netdev_err(netdev, "Failed to set link state\n");
909 if (!wait_for_completion_timeout(&adapter->init_done,
911 netdev_err(netdev, "timeout setting link state\n");
915 if (adapter->init_done_rc == 1) {
916 /* Partuial success, delay and re-send */
919 } else if (adapter->init_done_rc) {
920 netdev_warn(netdev, "Unable to set link state, rc=%d\n",
921 adapter->init_done_rc);
922 return adapter->init_done_rc;
929 static int set_real_num_queues(struct net_device *netdev)
931 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
934 netdev_dbg(netdev, "Setting real tx/rx queues (%llx/%llx)\n",
935 adapter->req_tx_queues, adapter->req_rx_queues);
937 rc = netif_set_real_num_tx_queues(netdev, adapter->req_tx_queues);
939 netdev_err(netdev, "failed to set the number of tx queues\n");
943 rc = netif_set_real_num_rx_queues(netdev, adapter->req_rx_queues);
945 netdev_err(netdev, "failed to set the number of rx queues\n");
950 static int ibmvnic_get_vpd(struct ibmvnic_adapter *adapter)
952 struct device *dev = &adapter->vdev->dev;
953 union ibmvnic_crq crq;
957 if (adapter->vpd->buff)
958 len = adapter->vpd->len;
960 init_completion(&adapter->fw_done);
961 crq.get_vpd_size.first = IBMVNIC_CRQ_CMD;
962 crq.get_vpd_size.cmd = GET_VPD_SIZE;
963 rc = ibmvnic_send_crq(adapter, &crq);
966 wait_for_completion(&adapter->fw_done);
968 if (!adapter->vpd->len)
971 if (!adapter->vpd->buff)
972 adapter->vpd->buff = kzalloc(adapter->vpd->len, GFP_KERNEL);
973 else if (adapter->vpd->len != len)
975 krealloc(adapter->vpd->buff,
976 adapter->vpd->len, GFP_KERNEL);
978 if (!adapter->vpd->buff) {
979 dev_err(dev, "Could allocate VPD buffer\n");
983 adapter->vpd->dma_addr =
984 dma_map_single(dev, adapter->vpd->buff, adapter->vpd->len,
986 if (dma_mapping_error(dev, adapter->vpd->dma_addr)) {
987 dev_err(dev, "Could not map VPD buffer\n");
988 kfree(adapter->vpd->buff);
989 adapter->vpd->buff = NULL;
993 reinit_completion(&adapter->fw_done);
994 crq.get_vpd.first = IBMVNIC_CRQ_CMD;
995 crq.get_vpd.cmd = GET_VPD;
996 crq.get_vpd.ioba = cpu_to_be32(adapter->vpd->dma_addr);
997 crq.get_vpd.len = cpu_to_be32((u32)adapter->vpd->len);
998 rc = ibmvnic_send_crq(adapter, &crq);
1000 kfree(adapter->vpd->buff);
1001 adapter->vpd->buff = NULL;
1004 wait_for_completion(&adapter->fw_done);
1009 static int init_resources(struct ibmvnic_adapter *adapter)
1011 struct net_device *netdev = adapter->netdev;
1014 rc = set_real_num_queues(netdev);
1018 adapter->vpd = kzalloc(sizeof(*adapter->vpd), GFP_KERNEL);
1022 /* Vital Product Data (VPD) */
1023 rc = ibmvnic_get_vpd(adapter);
1025 netdev_err(netdev, "failed to initialize Vital Product Data (VPD)\n");
1029 adapter->map_id = 1;
1031 rc = init_napi(adapter);
1035 send_map_query(adapter);
1037 rc = init_rx_pools(netdev);
1041 rc = init_tx_pools(netdev);
1045 static int __ibmvnic_open(struct net_device *netdev)
1047 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1048 enum vnic_state prev_state = adapter->state;
1051 adapter->state = VNIC_OPENING;
1052 replenish_pools(adapter);
1053 ibmvnic_napi_enable(adapter);
1055 /* We're ready to receive frames, enable the sub-crq interrupts and
1056 * set the logical link state to up
1058 for (i = 0; i < adapter->req_rx_queues; i++) {
1059 netdev_dbg(netdev, "Enabling rx_scrq[%d] irq\n", i);
1060 if (prev_state == VNIC_CLOSED)
1061 enable_irq(adapter->rx_scrq[i]->irq);
1062 enable_scrq_irq(adapter, adapter->rx_scrq[i]);
1065 for (i = 0; i < adapter->req_tx_queues; i++) {
1066 netdev_dbg(netdev, "Enabling tx_scrq[%d] irq\n", i);
1067 if (prev_state == VNIC_CLOSED)
1068 enable_irq(adapter->tx_scrq[i]->irq);
1069 enable_scrq_irq(adapter, adapter->tx_scrq[i]);
1072 rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_UP);
1074 for (i = 0; i < adapter->req_rx_queues; i++)
1075 napi_disable(&adapter->napi[i]);
1076 release_resources(adapter);
1080 netif_tx_start_all_queues(netdev);
1082 if (prev_state == VNIC_CLOSED) {
1083 for (i = 0; i < adapter->req_rx_queues; i++)
1084 napi_schedule(&adapter->napi[i]);
1087 adapter->state = VNIC_OPEN;
1091 static int ibmvnic_open(struct net_device *netdev)
1093 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1096 /* If device failover is pending, just set device state and return.
1097 * Device operation will be handled by reset routine.
1099 if (adapter->failover_pending) {
1100 adapter->state = VNIC_OPEN;
1104 if (adapter->state != VNIC_CLOSED) {
1105 rc = ibmvnic_login(netdev);
1109 rc = init_resources(adapter);
1111 netdev_err(netdev, "failed to initialize resources\n");
1112 release_resources(adapter);
1117 rc = __ibmvnic_open(netdev);
1118 netif_carrier_on(netdev);
1123 static void clean_rx_pools(struct ibmvnic_adapter *adapter)
1125 struct ibmvnic_rx_pool *rx_pool;
1126 struct ibmvnic_rx_buff *rx_buff;
1131 if (!adapter->rx_pool)
1134 rx_scrqs = adapter->num_active_rx_pools;
1135 rx_entries = adapter->req_rx_add_entries_per_subcrq;
1137 /* Free any remaining skbs in the rx buffer pools */
1138 for (i = 0; i < rx_scrqs; i++) {
1139 rx_pool = &adapter->rx_pool[i];
1140 if (!rx_pool || !rx_pool->rx_buff)
1143 netdev_dbg(adapter->netdev, "Cleaning rx_pool[%d]\n", i);
1144 for (j = 0; j < rx_entries; j++) {
1145 rx_buff = &rx_pool->rx_buff[j];
1146 if (rx_buff && rx_buff->skb) {
1147 dev_kfree_skb_any(rx_buff->skb);
1148 rx_buff->skb = NULL;
1154 static void clean_one_tx_pool(struct ibmvnic_adapter *adapter,
1155 struct ibmvnic_tx_pool *tx_pool)
1157 struct ibmvnic_tx_buff *tx_buff;
1161 if (!tx_pool || !tx_pool->tx_buff)
1164 tx_entries = tx_pool->num_buffers;
1166 for (i = 0; i < tx_entries; i++) {
1167 tx_buff = &tx_pool->tx_buff[i];
1168 if (tx_buff && tx_buff->skb) {
1169 dev_kfree_skb_any(tx_buff->skb);
1170 tx_buff->skb = NULL;
1175 static void clean_tx_pools(struct ibmvnic_adapter *adapter)
1180 if (!adapter->tx_pool || !adapter->tso_pool)
1183 tx_scrqs = adapter->num_active_tx_pools;
1185 /* Free any remaining skbs in the tx buffer pools */
1186 for (i = 0; i < tx_scrqs; i++) {
1187 netdev_dbg(adapter->netdev, "Cleaning tx_pool[%d]\n", i);
1188 clean_one_tx_pool(adapter, &adapter->tx_pool[i]);
1189 clean_one_tx_pool(adapter, &adapter->tso_pool[i]);
1193 static void ibmvnic_disable_irqs(struct ibmvnic_adapter *adapter)
1195 struct net_device *netdev = adapter->netdev;
1198 if (adapter->tx_scrq) {
1199 for (i = 0; i < adapter->req_tx_queues; i++)
1200 if (adapter->tx_scrq[i]->irq) {
1202 "Disabling tx_scrq[%d] irq\n", i);
1203 disable_scrq_irq(adapter, adapter->tx_scrq[i]);
1204 disable_irq(adapter->tx_scrq[i]->irq);
1208 if (adapter->rx_scrq) {
1209 for (i = 0; i < adapter->req_rx_queues; i++) {
1210 if (adapter->rx_scrq[i]->irq) {
1212 "Disabling rx_scrq[%d] irq\n", i);
1213 disable_scrq_irq(adapter, adapter->rx_scrq[i]);
1214 disable_irq(adapter->rx_scrq[i]->irq);
1220 static void ibmvnic_cleanup(struct net_device *netdev)
1222 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1224 /* ensure that transmissions are stopped if called by do_reset */
1225 if (adapter->resetting)
1226 netif_tx_disable(netdev);
1228 netif_tx_stop_all_queues(netdev);
1230 ibmvnic_napi_disable(adapter);
1231 ibmvnic_disable_irqs(adapter);
1233 clean_rx_pools(adapter);
1234 clean_tx_pools(adapter);
1237 static int __ibmvnic_close(struct net_device *netdev)
1239 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1242 adapter->state = VNIC_CLOSING;
1243 rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_DN);
1246 adapter->state = VNIC_CLOSED;
1250 static int ibmvnic_close(struct net_device *netdev)
1252 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1255 /* If device failover is pending, just set device state and return.
1256 * Device operation will be handled by reset routine.
1258 if (adapter->failover_pending) {
1259 adapter->state = VNIC_CLOSED;
1263 rc = __ibmvnic_close(netdev);
1264 ibmvnic_cleanup(netdev);
1270 * build_hdr_data - creates L2/L3/L4 header data buffer
1271 * @hdr_field - bitfield determining needed headers
1272 * @skb - socket buffer
1273 * @hdr_len - array of header lengths
1274 * @tot_len - total length of data
1276 * Reads hdr_field to determine which headers are needed by firmware.
1277 * Builds a buffer containing these headers. Saves individual header
1278 * lengths and total buffer length to be used to build descriptors.
1280 static int build_hdr_data(u8 hdr_field, struct sk_buff *skb,
1281 int *hdr_len, u8 *hdr_data)
1286 if (skb_vlan_tagged(skb) && !skb_vlan_tag_present(skb))
1287 hdr_len[0] = sizeof(struct vlan_ethhdr);
1289 hdr_len[0] = sizeof(struct ethhdr);
1291 if (skb->protocol == htons(ETH_P_IP)) {
1292 hdr_len[1] = ip_hdr(skb)->ihl * 4;
1293 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
1294 hdr_len[2] = tcp_hdrlen(skb);
1295 else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1296 hdr_len[2] = sizeof(struct udphdr);
1297 } else if (skb->protocol == htons(ETH_P_IPV6)) {
1298 hdr_len[1] = sizeof(struct ipv6hdr);
1299 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
1300 hdr_len[2] = tcp_hdrlen(skb);
1301 else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)
1302 hdr_len[2] = sizeof(struct udphdr);
1303 } else if (skb->protocol == htons(ETH_P_ARP)) {
1304 hdr_len[1] = arp_hdr_len(skb->dev);
1308 memset(hdr_data, 0, 120);
1309 if ((hdr_field >> 6) & 1) {
1310 hdr = skb_mac_header(skb);
1311 memcpy(hdr_data, hdr, hdr_len[0]);
1315 if ((hdr_field >> 5) & 1) {
1316 hdr = skb_network_header(skb);
1317 memcpy(hdr_data + len, hdr, hdr_len[1]);
1321 if ((hdr_field >> 4) & 1) {
1322 hdr = skb_transport_header(skb);
1323 memcpy(hdr_data + len, hdr, hdr_len[2]);
1330 * create_hdr_descs - create header and header extension descriptors
1331 * @hdr_field - bitfield determining needed headers
1332 * @data - buffer containing header data
1333 * @len - length of data buffer
1334 * @hdr_len - array of individual header lengths
1335 * @scrq_arr - descriptor array
1337 * Creates header and, if needed, header extension descriptors and
1338 * places them in a descriptor array, scrq_arr
1341 static int create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len,
1342 union sub_crq *scrq_arr)
1344 union sub_crq hdr_desc;
1350 while (tmp_len > 0) {
1351 cur = hdr_data + len - tmp_len;
1353 memset(&hdr_desc, 0, sizeof(hdr_desc));
1354 if (cur != hdr_data) {
1355 data = hdr_desc.hdr_ext.data;
1356 tmp = tmp_len > 29 ? 29 : tmp_len;
1357 hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD;
1358 hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC;
1359 hdr_desc.hdr_ext.len = tmp;
1361 data = hdr_desc.hdr.data;
1362 tmp = tmp_len > 24 ? 24 : tmp_len;
1363 hdr_desc.hdr.first = IBMVNIC_CRQ_CMD;
1364 hdr_desc.hdr.type = IBMVNIC_HDR_DESC;
1365 hdr_desc.hdr.len = tmp;
1366 hdr_desc.hdr.l2_len = (u8)hdr_len[0];
1367 hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]);
1368 hdr_desc.hdr.l4_len = (u8)hdr_len[2];
1369 hdr_desc.hdr.flag = hdr_field << 1;
1371 memcpy(data, cur, tmp);
1373 *scrq_arr = hdr_desc;
1382 * build_hdr_descs_arr - build a header descriptor array
1383 * @skb - socket buffer
1384 * @num_entries - number of descriptors to be sent
1385 * @subcrq - first TX descriptor
1386 * @hdr_field - bit field determining which headers will be sent
1388 * This function will build a TX descriptor array with applicable
1389 * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect.
1392 static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff,
1393 int *num_entries, u8 hdr_field)
1395 int hdr_len[3] = {0, 0, 0};
1397 u8 *hdr_data = txbuff->hdr_data;
1399 tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len,
1401 *num_entries += create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len,
1402 txbuff->indir_arr + 1);
1405 static int ibmvnic_xmit_workarounds(struct sk_buff *skb,
1406 struct net_device *netdev)
1408 /* For some backing devices, mishandling of small packets
1409 * can result in a loss of connection or TX stall. Device
1410 * architects recommend that no packet should be smaller
1411 * than the minimum MTU value provided to the driver, so
1412 * pad any packets to that length
1414 if (skb->len < netdev->min_mtu)
1415 return skb_put_padto(skb, netdev->min_mtu);
1420 static netdev_tx_t ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
1422 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1423 int queue_num = skb_get_queue_mapping(skb);
1424 u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req;
1425 struct device *dev = &adapter->vdev->dev;
1426 struct ibmvnic_tx_buff *tx_buff = NULL;
1427 struct ibmvnic_sub_crq_queue *tx_scrq;
1428 struct ibmvnic_tx_pool *tx_pool;
1429 unsigned int tx_send_failed = 0;
1430 unsigned int tx_map_failed = 0;
1431 unsigned int tx_dropped = 0;
1432 unsigned int tx_packets = 0;
1433 unsigned int tx_bytes = 0;
1434 dma_addr_t data_dma_addr;
1435 struct netdev_queue *txq;
1436 unsigned long lpar_rc;
1437 union sub_crq tx_crq;
1438 unsigned int offset;
1439 int num_entries = 1;
1444 netdev_tx_t ret = NETDEV_TX_OK;
1446 if (adapter->resetting) {
1447 if (!netif_subqueue_stopped(netdev, skb))
1448 netif_stop_subqueue(netdev, queue_num);
1449 dev_kfree_skb_any(skb);
1457 if (ibmvnic_xmit_workarounds(skb, netdev)) {
1463 if (skb_is_gso(skb))
1464 tx_pool = &adapter->tso_pool[queue_num];
1466 tx_pool = &adapter->tx_pool[queue_num];
1468 tx_scrq = adapter->tx_scrq[queue_num];
1469 txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb));
1470 handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
1471 be32_to_cpu(adapter->login_rsp_buf->off_txsubm_subcrqs));
1473 index = tx_pool->free_map[tx_pool->consumer_index];
1475 if (index == IBMVNIC_INVALID_MAP) {
1476 dev_kfree_skb_any(skb);
1483 tx_pool->free_map[tx_pool->consumer_index] = IBMVNIC_INVALID_MAP;
1485 offset = index * tx_pool->buf_size;
1486 dst = tx_pool->long_term_buff.buff + offset;
1487 memset(dst, 0, tx_pool->buf_size);
1488 data_dma_addr = tx_pool->long_term_buff.addr + offset;
1490 if (skb_shinfo(skb)->nr_frags) {
1494 skb_copy_from_linear_data(skb, dst, skb_headlen(skb));
1495 cur = skb_headlen(skb);
1497 /* Copy the frags */
1498 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1499 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1502 page_address(skb_frag_page(frag)) +
1503 frag->page_offset, skb_frag_size(frag));
1504 cur += skb_frag_size(frag);
1507 skb_copy_from_linear_data(skb, dst, skb->len);
1510 tx_pool->consumer_index =
1511 (tx_pool->consumer_index + 1) % tx_pool->num_buffers;
1513 tx_buff = &tx_pool->tx_buff[index];
1515 tx_buff->data_dma[0] = data_dma_addr;
1516 tx_buff->data_len[0] = skb->len;
1517 tx_buff->index = index;
1518 tx_buff->pool_index = queue_num;
1519 tx_buff->last_frag = true;
1521 memset(&tx_crq, 0, sizeof(tx_crq));
1522 tx_crq.v1.first = IBMVNIC_CRQ_CMD;
1523 tx_crq.v1.type = IBMVNIC_TX_DESC;
1524 tx_crq.v1.n_crq_elem = 1;
1525 tx_crq.v1.n_sge = 1;
1526 tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED;
1528 if (skb_is_gso(skb))
1529 tx_crq.v1.correlator =
1530 cpu_to_be32(index | IBMVNIC_TSO_POOL_MASK);
1532 tx_crq.v1.correlator = cpu_to_be32(index);
1533 tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id);
1534 tx_crq.v1.sge_len = cpu_to_be32(skb->len);
1535 tx_crq.v1.ioba = cpu_to_be64(data_dma_addr);
1537 if (adapter->vlan_header_insertion && skb_vlan_tag_present(skb)) {
1538 tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT;
1539 tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci);
1542 if (skb->protocol == htons(ETH_P_IP)) {
1543 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4;
1544 proto = ip_hdr(skb)->protocol;
1545 } else if (skb->protocol == htons(ETH_P_IPV6)) {
1546 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6;
1547 proto = ipv6_hdr(skb)->nexthdr;
1550 if (proto == IPPROTO_TCP)
1551 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP;
1552 else if (proto == IPPROTO_UDP)
1553 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP;
1555 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1556 tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD;
1559 if (skb_is_gso(skb)) {
1560 tx_crq.v1.flags1 |= IBMVNIC_TX_LSO;
1561 tx_crq.v1.mss = cpu_to_be16(skb_shinfo(skb)->gso_size);
1564 /* determine if l2/3/4 headers are sent to firmware */
1565 if ((*hdrs >> 7) & 1) {
1566 build_hdr_descs_arr(tx_buff, &num_entries, *hdrs);
1567 tx_crq.v1.n_crq_elem = num_entries;
1568 tx_buff->num_entries = num_entries;
1569 tx_buff->indir_arr[0] = tx_crq;
1570 tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr,
1571 sizeof(tx_buff->indir_arr),
1573 if (dma_mapping_error(dev, tx_buff->indir_dma)) {
1574 dev_kfree_skb_any(skb);
1575 tx_buff->skb = NULL;
1576 if (!firmware_has_feature(FW_FEATURE_CMO))
1577 dev_err(dev, "tx: unable to map descriptor array\n");
1583 lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num],
1584 (u64)tx_buff->indir_dma,
1587 tx_buff->num_entries = num_entries;
1588 lpar_rc = send_subcrq(adapter, handle_array[queue_num],
1591 if (lpar_rc != H_SUCCESS) {
1592 if (lpar_rc != H_CLOSED && lpar_rc != H_PARAMETER)
1593 dev_err_ratelimited(dev, "tx: send failed\n");
1594 dev_kfree_skb_any(skb);
1595 tx_buff->skb = NULL;
1597 if (lpar_rc == H_CLOSED || adapter->failover_pending) {
1598 /* Disable TX and report carrier off if queue is closed
1599 * or pending failover.
1600 * Firmware guarantees that a signal will be sent to the
1601 * driver, triggering a reset or some other action.
1603 netif_tx_stop_all_queues(netdev);
1604 netif_carrier_off(netdev);
1613 if (atomic_add_return(num_entries, &tx_scrq->used)
1614 >= adapter->req_tx_entries_per_subcrq) {
1615 netdev_dbg(netdev, "Stopping queue %d\n", queue_num);
1616 netif_stop_subqueue(netdev, queue_num);
1620 tx_bytes += skb->len;
1621 txq->trans_start = jiffies;
1626 /* roll back consumer index and map array*/
1627 if (tx_pool->consumer_index == 0)
1628 tx_pool->consumer_index =
1629 tx_pool->num_buffers - 1;
1631 tx_pool->consumer_index--;
1632 tx_pool->free_map[tx_pool->consumer_index] = index;
1634 netdev->stats.tx_dropped += tx_dropped;
1635 netdev->stats.tx_bytes += tx_bytes;
1636 netdev->stats.tx_packets += tx_packets;
1637 adapter->tx_send_failed += tx_send_failed;
1638 adapter->tx_map_failed += tx_map_failed;
1639 adapter->tx_stats_buffers[queue_num].packets += tx_packets;
1640 adapter->tx_stats_buffers[queue_num].bytes += tx_bytes;
1641 adapter->tx_stats_buffers[queue_num].dropped_packets += tx_dropped;
1646 static void ibmvnic_set_multi(struct net_device *netdev)
1648 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1649 struct netdev_hw_addr *ha;
1650 union ibmvnic_crq crq;
1652 memset(&crq, 0, sizeof(crq));
1653 crq.request_capability.first = IBMVNIC_CRQ_CMD;
1654 crq.request_capability.cmd = REQUEST_CAPABILITY;
1656 if (netdev->flags & IFF_PROMISC) {
1657 if (!adapter->promisc_supported)
1660 if (netdev->flags & IFF_ALLMULTI) {
1661 /* Accept all multicast */
1662 memset(&crq, 0, sizeof(crq));
1663 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
1664 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
1665 crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL;
1666 ibmvnic_send_crq(adapter, &crq);
1667 } else if (netdev_mc_empty(netdev)) {
1668 /* Reject all multicast */
1669 memset(&crq, 0, sizeof(crq));
1670 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
1671 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
1672 crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL;
1673 ibmvnic_send_crq(adapter, &crq);
1675 /* Accept one or more multicast(s) */
1676 netdev_for_each_mc_addr(ha, netdev) {
1677 memset(&crq, 0, sizeof(crq));
1678 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
1679 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
1680 crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC;
1681 ether_addr_copy(&crq.multicast_ctrl.mac_addr[0],
1683 ibmvnic_send_crq(adapter, &crq);
1689 static int __ibmvnic_set_mac(struct net_device *netdev, struct sockaddr *p)
1691 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1692 struct sockaddr *addr = p;
1693 union ibmvnic_crq crq;
1696 if (!is_valid_ether_addr(addr->sa_data))
1697 return -EADDRNOTAVAIL;
1699 memset(&crq, 0, sizeof(crq));
1700 crq.change_mac_addr.first = IBMVNIC_CRQ_CMD;
1701 crq.change_mac_addr.cmd = CHANGE_MAC_ADDR;
1702 ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data);
1704 init_completion(&adapter->fw_done);
1705 rc = ibmvnic_send_crq(adapter, &crq);
1708 wait_for_completion(&adapter->fw_done);
1709 /* netdev->dev_addr is changed in handle_change_mac_rsp function */
1710 return adapter->fw_done_rc ? -EIO : 0;
1713 static int ibmvnic_set_mac(struct net_device *netdev, void *p)
1715 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1716 struct sockaddr *addr = p;
1719 if (adapter->state == VNIC_PROBED) {
1720 memcpy(&adapter->desired.mac, addr, sizeof(struct sockaddr));
1721 adapter->mac_change_pending = true;
1725 rc = __ibmvnic_set_mac(netdev, addr);
1731 * do_reset returns zero if we are able to keep processing reset events, or
1732 * non-zero if we hit a fatal error and must halt.
1734 static int do_reset(struct ibmvnic_adapter *adapter,
1735 struct ibmvnic_rwi *rwi, u32 reset_state)
1737 u64 old_num_rx_queues, old_num_tx_queues;
1738 u64 old_num_rx_slots, old_num_tx_slots;
1739 struct net_device *netdev = adapter->netdev;
1742 netdev_dbg(adapter->netdev, "Re-setting driver (%d)\n",
1745 netif_carrier_off(netdev);
1746 adapter->reset_reason = rwi->reset_reason;
1748 old_num_rx_queues = adapter->req_rx_queues;
1749 old_num_tx_queues = adapter->req_tx_queues;
1750 old_num_rx_slots = adapter->req_rx_add_entries_per_subcrq;
1751 old_num_tx_slots = adapter->req_tx_entries_per_subcrq;
1753 ibmvnic_cleanup(netdev);
1755 if (adapter->reset_reason != VNIC_RESET_MOBILITY &&
1756 adapter->reset_reason != VNIC_RESET_FAILOVER) {
1757 rc = __ibmvnic_close(netdev);
1762 if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM ||
1763 adapter->wait_for_reset) {
1764 release_resources(adapter);
1765 release_sub_crqs(adapter, 1);
1766 release_crq_queue(adapter);
1769 if (adapter->reset_reason != VNIC_RESET_NON_FATAL) {
1770 /* remove the closed state so when we call open it appears
1771 * we are coming from the probed state.
1773 adapter->state = VNIC_PROBED;
1775 if (adapter->wait_for_reset) {
1776 rc = init_crq_queue(adapter);
1777 } else if (adapter->reset_reason == VNIC_RESET_MOBILITY) {
1778 rc = ibmvnic_reenable_crq_queue(adapter);
1779 release_sub_crqs(adapter, 1);
1781 rc = ibmvnic_reset_crq(adapter);
1783 rc = vio_enable_interrupts(adapter->vdev);
1787 netdev_err(adapter->netdev,
1788 "Couldn't initialize crq. rc=%d\n", rc);
1792 rc = ibmvnic_reset_init(adapter);
1794 return IBMVNIC_INIT_FAILED;
1796 /* If the adapter was in PROBE state prior to the reset,
1799 if (reset_state == VNIC_PROBED)
1802 rc = ibmvnic_login(netdev);
1804 adapter->state = reset_state;
1808 if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM ||
1809 adapter->wait_for_reset) {
1810 rc = init_resources(adapter);
1813 } else if (adapter->req_rx_queues != old_num_rx_queues ||
1814 adapter->req_tx_queues != old_num_tx_queues ||
1815 adapter->req_rx_add_entries_per_subcrq !=
1817 adapter->req_tx_entries_per_subcrq !=
1819 release_rx_pools(adapter);
1820 release_tx_pools(adapter);
1821 release_napi(adapter);
1822 release_vpd_data(adapter);
1824 rc = init_resources(adapter);
1829 rc = reset_tx_pools(adapter);
1833 rc = reset_rx_pools(adapter);
1837 ibmvnic_disable_irqs(adapter);
1839 adapter->state = VNIC_CLOSED;
1841 if (reset_state == VNIC_CLOSED)
1844 rc = __ibmvnic_open(netdev);
1846 if (list_empty(&adapter->rwi_list))
1847 adapter->state = VNIC_CLOSED;
1849 adapter->state = reset_state;
1855 for (i = 0; i < adapter->req_rx_queues; i++)
1856 napi_schedule(&adapter->napi[i]);
1858 if (adapter->reset_reason != VNIC_RESET_FAILOVER &&
1859 adapter->reset_reason != VNIC_RESET_CHANGE_PARAM)
1860 call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, netdev);
1862 netif_carrier_on(netdev);
1867 static int do_hard_reset(struct ibmvnic_adapter *adapter,
1868 struct ibmvnic_rwi *rwi, u32 reset_state)
1870 struct net_device *netdev = adapter->netdev;
1873 netdev_dbg(adapter->netdev, "Hard resetting driver (%d)\n",
1876 netif_carrier_off(netdev);
1877 adapter->reset_reason = rwi->reset_reason;
1879 ibmvnic_cleanup(netdev);
1880 release_resources(adapter);
1881 release_sub_crqs(adapter, 0);
1882 release_crq_queue(adapter);
1884 /* remove the closed state so when we call open it appears
1885 * we are coming from the probed state.
1887 adapter->state = VNIC_PROBED;
1889 reinit_completion(&adapter->init_done);
1890 rc = init_crq_queue(adapter);
1892 netdev_err(adapter->netdev,
1893 "Couldn't initialize crq. rc=%d\n", rc);
1897 rc = ibmvnic_init(adapter);
1901 /* If the adapter was in PROBE state prior to the reset,
1904 if (reset_state == VNIC_PROBED)
1907 rc = ibmvnic_login(netdev);
1909 adapter->state = VNIC_PROBED;
1913 rc = init_resources(adapter);
1917 ibmvnic_disable_irqs(adapter);
1918 adapter->state = VNIC_CLOSED;
1920 if (reset_state == VNIC_CLOSED)
1923 rc = __ibmvnic_open(netdev);
1925 if (list_empty(&adapter->rwi_list))
1926 adapter->state = VNIC_CLOSED;
1928 adapter->state = reset_state;
1933 netif_carrier_on(netdev);
1938 static struct ibmvnic_rwi *get_next_rwi(struct ibmvnic_adapter *adapter)
1940 struct ibmvnic_rwi *rwi;
1941 unsigned long flags;
1943 spin_lock_irqsave(&adapter->rwi_lock, flags);
1945 if (!list_empty(&adapter->rwi_list)) {
1946 rwi = list_first_entry(&adapter->rwi_list, struct ibmvnic_rwi,
1948 list_del(&rwi->list);
1953 spin_unlock_irqrestore(&adapter->rwi_lock, flags);
1957 static void free_all_rwi(struct ibmvnic_adapter *adapter)
1959 struct ibmvnic_rwi *rwi;
1961 rwi = get_next_rwi(adapter);
1964 rwi = get_next_rwi(adapter);
1968 static void __ibmvnic_reset(struct work_struct *work)
1970 struct ibmvnic_rwi *rwi;
1971 struct ibmvnic_adapter *adapter;
1972 bool we_lock_rtnl = false;
1976 adapter = container_of(work, struct ibmvnic_adapter, ibmvnic_reset);
1978 /* netif_set_real_num_xx_queues needs to take rtnl lock here
1979 * unless wait_for_reset is set, in which case the rtnl lock
1980 * has already been taken before initializing the reset
1982 if (!adapter->wait_for_reset) {
1984 we_lock_rtnl = true;
1986 reset_state = adapter->state;
1988 rwi = get_next_rwi(adapter);
1990 if (adapter->force_reset_recovery) {
1991 adapter->force_reset_recovery = false;
1992 rc = do_hard_reset(adapter, rwi, reset_state);
1994 rc = do_reset(adapter, rwi, reset_state);
1997 if (rc && rc != IBMVNIC_INIT_FAILED &&
1998 !adapter->force_reset_recovery)
2001 rwi = get_next_rwi(adapter);
2004 if (adapter->wait_for_reset) {
2005 adapter->wait_for_reset = false;
2006 adapter->reset_done_rc = rc;
2007 complete(&adapter->reset_done);
2011 netdev_dbg(adapter->netdev, "Reset failed\n");
2012 free_all_rwi(adapter);
2015 adapter->resetting = false;
2020 static int ibmvnic_reset(struct ibmvnic_adapter *adapter,
2021 enum ibmvnic_reset_reason reason)
2023 struct list_head *entry, *tmp_entry;
2024 struct ibmvnic_rwi *rwi, *tmp;
2025 struct net_device *netdev = adapter->netdev;
2026 unsigned long flags;
2029 if (adapter->state == VNIC_REMOVING ||
2030 adapter->state == VNIC_REMOVED ||
2031 adapter->failover_pending) {
2033 netdev_dbg(netdev, "Adapter removing or pending failover, skipping reset\n");
2037 if (adapter->state == VNIC_PROBING) {
2038 netdev_warn(netdev, "Adapter reset during probe\n");
2039 ret = adapter->init_done_rc = EAGAIN;
2043 spin_lock_irqsave(&adapter->rwi_lock, flags);
2045 list_for_each(entry, &adapter->rwi_list) {
2046 tmp = list_entry(entry, struct ibmvnic_rwi, list);
2047 if (tmp->reset_reason == reason) {
2048 netdev_dbg(netdev, "Skipping matching reset\n");
2049 spin_unlock_irqrestore(&adapter->rwi_lock, flags);
2055 rwi = kzalloc(sizeof(*rwi), GFP_ATOMIC);
2057 spin_unlock_irqrestore(&adapter->rwi_lock, flags);
2058 ibmvnic_close(netdev);
2062 /* if we just received a transport event,
2063 * flush reset queue and process this reset
2065 if (adapter->force_reset_recovery && !list_empty(&adapter->rwi_list)) {
2066 list_for_each_safe(entry, tmp_entry, &adapter->rwi_list)
2069 rwi->reset_reason = reason;
2070 list_add_tail(&rwi->list, &adapter->rwi_list);
2071 spin_unlock_irqrestore(&adapter->rwi_lock, flags);
2072 adapter->resetting = true;
2073 netdev_dbg(adapter->netdev, "Scheduling reset (reason %d)\n", reason);
2074 schedule_work(&adapter->ibmvnic_reset);
2078 if (adapter->wait_for_reset)
2079 adapter->wait_for_reset = false;
2083 static void ibmvnic_tx_timeout(struct net_device *dev)
2085 struct ibmvnic_adapter *adapter = netdev_priv(dev);
2087 ibmvnic_reset(adapter, VNIC_RESET_TIMEOUT);
2090 static void remove_buff_from_pool(struct ibmvnic_adapter *adapter,
2091 struct ibmvnic_rx_buff *rx_buff)
2093 struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index];
2095 rx_buff->skb = NULL;
2097 pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff);
2098 pool->next_alloc = (pool->next_alloc + 1) % pool->size;
2100 atomic_dec(&pool->available);
2103 static int ibmvnic_poll(struct napi_struct *napi, int budget)
2105 struct net_device *netdev = napi->dev;
2106 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2107 int scrq_num = (int)(napi - adapter->napi);
2108 int frames_processed = 0;
2111 while (frames_processed < budget) {
2112 struct sk_buff *skb;
2113 struct ibmvnic_rx_buff *rx_buff;
2114 union sub_crq *next;
2119 if (unlikely(adapter->resetting &&
2120 adapter->reset_reason != VNIC_RESET_NON_FATAL)) {
2121 enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
2122 napi_complete_done(napi, frames_processed);
2123 return frames_processed;
2126 if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num]))
2128 next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]);
2130 (struct ibmvnic_rx_buff *)be64_to_cpu(next->
2131 rx_comp.correlator);
2132 /* do error checking */
2133 if (next->rx_comp.rc) {
2134 netdev_dbg(netdev, "rx buffer returned with rc %x\n",
2135 be16_to_cpu(next->rx_comp.rc));
2136 /* free the entry */
2137 next->rx_comp.first = 0;
2138 dev_kfree_skb_any(rx_buff->skb);
2139 remove_buff_from_pool(adapter, rx_buff);
2141 } else if (!rx_buff->skb) {
2142 /* free the entry */
2143 next->rx_comp.first = 0;
2144 remove_buff_from_pool(adapter, rx_buff);
2148 length = be32_to_cpu(next->rx_comp.len);
2149 offset = be16_to_cpu(next->rx_comp.off_frame_data);
2150 flags = next->rx_comp.flags;
2152 skb_copy_to_linear_data(skb, rx_buff->data + offset,
2155 /* VLAN Header has been stripped by the system firmware and
2156 * needs to be inserted by the driver
2158 if (adapter->rx_vlan_header_insertion &&
2159 (flags & IBMVNIC_VLAN_STRIPPED))
2160 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
2161 ntohs(next->rx_comp.vlan_tci));
2163 /* free the entry */
2164 next->rx_comp.first = 0;
2165 remove_buff_from_pool(adapter, rx_buff);
2167 skb_put(skb, length);
2168 skb->protocol = eth_type_trans(skb, netdev);
2169 skb_record_rx_queue(skb, scrq_num);
2171 if (flags & IBMVNIC_IP_CHKSUM_GOOD &&
2172 flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) {
2173 skb->ip_summed = CHECKSUM_UNNECESSARY;
2177 napi_gro_receive(napi, skb); /* send it up */
2178 netdev->stats.rx_packets++;
2179 netdev->stats.rx_bytes += length;
2180 adapter->rx_stats_buffers[scrq_num].packets++;
2181 adapter->rx_stats_buffers[scrq_num].bytes += length;
2185 if (adapter->state != VNIC_CLOSING)
2186 replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]);
2188 if (frames_processed < budget) {
2189 enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
2190 napi_complete_done(napi, frames_processed);
2191 if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) &&
2192 napi_reschedule(napi)) {
2193 disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
2197 return frames_processed;
2200 static int wait_for_reset(struct ibmvnic_adapter *adapter)
2204 adapter->fallback.mtu = adapter->req_mtu;
2205 adapter->fallback.rx_queues = adapter->req_rx_queues;
2206 adapter->fallback.tx_queues = adapter->req_tx_queues;
2207 adapter->fallback.rx_entries = adapter->req_rx_add_entries_per_subcrq;
2208 adapter->fallback.tx_entries = adapter->req_tx_entries_per_subcrq;
2210 init_completion(&adapter->reset_done);
2211 adapter->wait_for_reset = true;
2212 rc = ibmvnic_reset(adapter, VNIC_RESET_CHANGE_PARAM);
2215 wait_for_completion(&adapter->reset_done);
2218 if (adapter->reset_done_rc) {
2220 adapter->desired.mtu = adapter->fallback.mtu;
2221 adapter->desired.rx_queues = adapter->fallback.rx_queues;
2222 adapter->desired.tx_queues = adapter->fallback.tx_queues;
2223 adapter->desired.rx_entries = adapter->fallback.rx_entries;
2224 adapter->desired.tx_entries = adapter->fallback.tx_entries;
2226 init_completion(&adapter->reset_done);
2227 adapter->wait_for_reset = true;
2228 rc = ibmvnic_reset(adapter, VNIC_RESET_CHANGE_PARAM);
2231 wait_for_completion(&adapter->reset_done);
2233 adapter->wait_for_reset = false;
2238 static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu)
2240 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2242 adapter->desired.mtu = new_mtu + ETH_HLEN;
2244 return wait_for_reset(adapter);
2247 static netdev_features_t ibmvnic_features_check(struct sk_buff *skb,
2248 struct net_device *dev,
2249 netdev_features_t features)
2251 /* Some backing hardware adapters can not
2252 * handle packets with a MSS less than 224
2253 * or with only one segment.
2255 if (skb_is_gso(skb)) {
2256 if (skb_shinfo(skb)->gso_size < 224 ||
2257 skb_shinfo(skb)->gso_segs == 1)
2258 features &= ~NETIF_F_GSO_MASK;
2264 static const struct net_device_ops ibmvnic_netdev_ops = {
2265 .ndo_open = ibmvnic_open,
2266 .ndo_stop = ibmvnic_close,
2267 .ndo_start_xmit = ibmvnic_xmit,
2268 .ndo_set_rx_mode = ibmvnic_set_multi,
2269 .ndo_set_mac_address = ibmvnic_set_mac,
2270 .ndo_validate_addr = eth_validate_addr,
2271 .ndo_tx_timeout = ibmvnic_tx_timeout,
2272 .ndo_change_mtu = ibmvnic_change_mtu,
2273 .ndo_features_check = ibmvnic_features_check,
2276 /* ethtool functions */
2278 static int ibmvnic_get_link_ksettings(struct net_device *netdev,
2279 struct ethtool_link_ksettings *cmd)
2281 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2284 rc = send_query_phys_parms(adapter);
2286 adapter->speed = SPEED_UNKNOWN;
2287 adapter->duplex = DUPLEX_UNKNOWN;
2289 cmd->base.speed = adapter->speed;
2290 cmd->base.duplex = adapter->duplex;
2291 cmd->base.port = PORT_FIBRE;
2292 cmd->base.phy_address = 0;
2293 cmd->base.autoneg = AUTONEG_ENABLE;
2298 static void ibmvnic_get_drvinfo(struct net_device *netdev,
2299 struct ethtool_drvinfo *info)
2301 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2303 strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver));
2304 strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version));
2305 strlcpy(info->fw_version, adapter->fw_version,
2306 sizeof(info->fw_version));
2309 static u32 ibmvnic_get_msglevel(struct net_device *netdev)
2311 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2313 return adapter->msg_enable;
2316 static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data)
2318 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2320 adapter->msg_enable = data;
2323 static u32 ibmvnic_get_link(struct net_device *netdev)
2325 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2327 /* Don't need to send a query because we request a logical link up at
2328 * init and then we wait for link state indications
2330 return adapter->logical_link_state;
2333 static void ibmvnic_get_ringparam(struct net_device *netdev,
2334 struct ethtool_ringparam *ring)
2336 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2338 if (adapter->priv_flags & IBMVNIC_USE_SERVER_MAXES) {
2339 ring->rx_max_pending = adapter->max_rx_add_entries_per_subcrq;
2340 ring->tx_max_pending = adapter->max_tx_entries_per_subcrq;
2342 ring->rx_max_pending = IBMVNIC_MAX_QUEUE_SZ;
2343 ring->tx_max_pending = IBMVNIC_MAX_QUEUE_SZ;
2345 ring->rx_mini_max_pending = 0;
2346 ring->rx_jumbo_max_pending = 0;
2347 ring->rx_pending = adapter->req_rx_add_entries_per_subcrq;
2348 ring->tx_pending = adapter->req_tx_entries_per_subcrq;
2349 ring->rx_mini_pending = 0;
2350 ring->rx_jumbo_pending = 0;
2353 static int ibmvnic_set_ringparam(struct net_device *netdev,
2354 struct ethtool_ringparam *ring)
2356 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2360 adapter->desired.rx_entries = ring->rx_pending;
2361 adapter->desired.tx_entries = ring->tx_pending;
2363 ret = wait_for_reset(adapter);
2366 (adapter->req_rx_add_entries_per_subcrq != ring->rx_pending ||
2367 adapter->req_tx_entries_per_subcrq != ring->tx_pending))
2369 "Could not match full ringsize request. Requested: RX %d, TX %d; Allowed: RX %llu, TX %llu\n",
2370 ring->rx_pending, ring->tx_pending,
2371 adapter->req_rx_add_entries_per_subcrq,
2372 adapter->req_tx_entries_per_subcrq);
2376 static void ibmvnic_get_channels(struct net_device *netdev,
2377 struct ethtool_channels *channels)
2379 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2381 if (adapter->priv_flags & IBMVNIC_USE_SERVER_MAXES) {
2382 channels->max_rx = adapter->max_rx_queues;
2383 channels->max_tx = adapter->max_tx_queues;
2385 channels->max_rx = IBMVNIC_MAX_QUEUES;
2386 channels->max_tx = IBMVNIC_MAX_QUEUES;
2389 channels->max_other = 0;
2390 channels->max_combined = 0;
2391 channels->rx_count = adapter->req_rx_queues;
2392 channels->tx_count = adapter->req_tx_queues;
2393 channels->other_count = 0;
2394 channels->combined_count = 0;
2397 static int ibmvnic_set_channels(struct net_device *netdev,
2398 struct ethtool_channels *channels)
2400 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2404 adapter->desired.rx_queues = channels->rx_count;
2405 adapter->desired.tx_queues = channels->tx_count;
2407 ret = wait_for_reset(adapter);
2410 (adapter->req_rx_queues != channels->rx_count ||
2411 adapter->req_tx_queues != channels->tx_count))
2413 "Could not match full channels request. Requested: RX %d, TX %d; Allowed: RX %llu, TX %llu\n",
2414 channels->rx_count, channels->tx_count,
2415 adapter->req_rx_queues, adapter->req_tx_queues);
2420 static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data)
2422 struct ibmvnic_adapter *adapter = netdev_priv(dev);
2425 switch (stringset) {
2427 for (i = 0; i < ARRAY_SIZE(ibmvnic_stats);
2428 i++, data += ETH_GSTRING_LEN)
2429 memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN);
2431 for (i = 0; i < adapter->req_tx_queues; i++) {
2432 snprintf(data, ETH_GSTRING_LEN, "tx%d_packets", i);
2433 data += ETH_GSTRING_LEN;
2435 snprintf(data, ETH_GSTRING_LEN, "tx%d_bytes", i);
2436 data += ETH_GSTRING_LEN;
2438 snprintf(data, ETH_GSTRING_LEN,
2439 "tx%d_dropped_packets", i);
2440 data += ETH_GSTRING_LEN;
2443 for (i = 0; i < adapter->req_rx_queues; i++) {
2444 snprintf(data, ETH_GSTRING_LEN, "rx%d_packets", i);
2445 data += ETH_GSTRING_LEN;
2447 snprintf(data, ETH_GSTRING_LEN, "rx%d_bytes", i);
2448 data += ETH_GSTRING_LEN;
2450 snprintf(data, ETH_GSTRING_LEN, "rx%d_interrupts", i);
2451 data += ETH_GSTRING_LEN;
2455 case ETH_SS_PRIV_FLAGS:
2456 for (i = 0; i < ARRAY_SIZE(ibmvnic_priv_flags); i++)
2457 strcpy(data + i * ETH_GSTRING_LEN,
2458 ibmvnic_priv_flags[i]);
2465 static int ibmvnic_get_sset_count(struct net_device *dev, int sset)
2467 struct ibmvnic_adapter *adapter = netdev_priv(dev);
2471 return ARRAY_SIZE(ibmvnic_stats) +
2472 adapter->req_tx_queues * NUM_TX_STATS +
2473 adapter->req_rx_queues * NUM_RX_STATS;
2474 case ETH_SS_PRIV_FLAGS:
2475 return ARRAY_SIZE(ibmvnic_priv_flags);
2481 static void ibmvnic_get_ethtool_stats(struct net_device *dev,
2482 struct ethtool_stats *stats, u64 *data)
2484 struct ibmvnic_adapter *adapter = netdev_priv(dev);
2485 union ibmvnic_crq crq;
2489 memset(&crq, 0, sizeof(crq));
2490 crq.request_statistics.first = IBMVNIC_CRQ_CMD;
2491 crq.request_statistics.cmd = REQUEST_STATISTICS;
2492 crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token);
2493 crq.request_statistics.len =
2494 cpu_to_be32(sizeof(struct ibmvnic_statistics));
2496 /* Wait for data to be written */
2497 init_completion(&adapter->stats_done);
2498 rc = ibmvnic_send_crq(adapter, &crq);
2501 wait_for_completion(&adapter->stats_done);
2503 for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++)
2504 data[i] = be64_to_cpu(IBMVNIC_GET_STAT(adapter,
2505 ibmvnic_stats[i].offset));
2507 for (j = 0; j < adapter->req_tx_queues; j++) {
2508 data[i] = adapter->tx_stats_buffers[j].packets;
2510 data[i] = adapter->tx_stats_buffers[j].bytes;
2512 data[i] = adapter->tx_stats_buffers[j].dropped_packets;
2516 for (j = 0; j < adapter->req_rx_queues; j++) {
2517 data[i] = adapter->rx_stats_buffers[j].packets;
2519 data[i] = adapter->rx_stats_buffers[j].bytes;
2521 data[i] = adapter->rx_stats_buffers[j].interrupts;
2526 static u32 ibmvnic_get_priv_flags(struct net_device *netdev)
2528 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2530 return adapter->priv_flags;
2533 static int ibmvnic_set_priv_flags(struct net_device *netdev, u32 flags)
2535 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
2536 bool which_maxes = !!(flags & IBMVNIC_USE_SERVER_MAXES);
2539 adapter->priv_flags |= IBMVNIC_USE_SERVER_MAXES;
2541 adapter->priv_flags &= ~IBMVNIC_USE_SERVER_MAXES;
2545 static const struct ethtool_ops ibmvnic_ethtool_ops = {
2546 .get_drvinfo = ibmvnic_get_drvinfo,
2547 .get_msglevel = ibmvnic_get_msglevel,
2548 .set_msglevel = ibmvnic_set_msglevel,
2549 .get_link = ibmvnic_get_link,
2550 .get_ringparam = ibmvnic_get_ringparam,
2551 .set_ringparam = ibmvnic_set_ringparam,
2552 .get_channels = ibmvnic_get_channels,
2553 .set_channels = ibmvnic_set_channels,
2554 .get_strings = ibmvnic_get_strings,
2555 .get_sset_count = ibmvnic_get_sset_count,
2556 .get_ethtool_stats = ibmvnic_get_ethtool_stats,
2557 .get_link_ksettings = ibmvnic_get_link_ksettings,
2558 .get_priv_flags = ibmvnic_get_priv_flags,
2559 .set_priv_flags = ibmvnic_set_priv_flags,
2562 /* Routines for managing CRQs/sCRQs */
2564 static int reset_one_sub_crq_queue(struct ibmvnic_adapter *adapter,
2565 struct ibmvnic_sub_crq_queue *scrq)
2570 free_irq(scrq->irq, scrq);
2571 irq_dispose_mapping(scrq->irq);
2575 memset(scrq->msgs, 0, 4 * PAGE_SIZE);
2576 atomic_set(&scrq->used, 0);
2579 rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token,
2580 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq);
2584 static int reset_sub_crq_queues(struct ibmvnic_adapter *adapter)
2588 for (i = 0; i < adapter->req_tx_queues; i++) {
2589 netdev_dbg(adapter->netdev, "Re-setting tx_scrq[%d]\n", i);
2590 rc = reset_one_sub_crq_queue(adapter, adapter->tx_scrq[i]);
2595 for (i = 0; i < adapter->req_rx_queues; i++) {
2596 netdev_dbg(adapter->netdev, "Re-setting rx_scrq[%d]\n", i);
2597 rc = reset_one_sub_crq_queue(adapter, adapter->rx_scrq[i]);
2605 static void release_sub_crq_queue(struct ibmvnic_adapter *adapter,
2606 struct ibmvnic_sub_crq_queue *scrq,
2609 struct device *dev = &adapter->vdev->dev;
2612 netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n");
2615 /* Close the sub-crqs */
2617 rc = plpar_hcall_norets(H_FREE_SUB_CRQ,
2618 adapter->vdev->unit_address,
2620 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
2623 netdev_err(adapter->netdev,
2624 "Failed to release sub-CRQ %16lx, rc = %ld\n",
2629 dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
2631 free_pages((unsigned long)scrq->msgs, 2);
2635 static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter
2638 struct device *dev = &adapter->vdev->dev;
2639 struct ibmvnic_sub_crq_queue *scrq;
2642 scrq = kzalloc(sizeof(*scrq), GFP_KERNEL);
2647 (union sub_crq *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 2);
2649 dev_warn(dev, "Couldn't allocate crq queue messages page\n");
2650 goto zero_page_failed;
2653 scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE,
2655 if (dma_mapping_error(dev, scrq->msg_token)) {
2656 dev_warn(dev, "Couldn't map crq queue messages page\n");
2660 rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token,
2661 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq);
2663 if (rc == H_RESOURCE)
2664 rc = ibmvnic_reset_crq(adapter);
2666 if (rc == H_CLOSED) {
2667 dev_warn(dev, "Partner adapter not ready, waiting.\n");
2669 dev_warn(dev, "Error %d registering sub-crq\n", rc);
2673 scrq->adapter = adapter;
2674 scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs);
2675 spin_lock_init(&scrq->lock);
2677 netdev_dbg(adapter->netdev,
2678 "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n",
2679 scrq->crq_num, scrq->hw_irq, scrq->irq);
2684 dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
2687 free_pages((unsigned long)scrq->msgs, 2);
2694 static void release_sub_crqs(struct ibmvnic_adapter *adapter, bool do_h_free)
2698 if (adapter->tx_scrq) {
2699 for (i = 0; i < adapter->num_active_tx_scrqs; i++) {
2700 if (!adapter->tx_scrq[i])
2703 netdev_dbg(adapter->netdev, "Releasing tx_scrq[%d]\n",
2705 if (adapter->tx_scrq[i]->irq) {
2706 free_irq(adapter->tx_scrq[i]->irq,
2707 adapter->tx_scrq[i]);
2708 irq_dispose_mapping(adapter->tx_scrq[i]->irq);
2709 adapter->tx_scrq[i]->irq = 0;
2712 release_sub_crq_queue(adapter, adapter->tx_scrq[i],
2716 kfree(adapter->tx_scrq);
2717 adapter->tx_scrq = NULL;
2718 adapter->num_active_tx_scrqs = 0;
2721 if (adapter->rx_scrq) {
2722 for (i = 0; i < adapter->num_active_rx_scrqs; i++) {
2723 if (!adapter->rx_scrq[i])
2726 netdev_dbg(adapter->netdev, "Releasing rx_scrq[%d]\n",
2728 if (adapter->rx_scrq[i]->irq) {
2729 free_irq(adapter->rx_scrq[i]->irq,
2730 adapter->rx_scrq[i]);
2731 irq_dispose_mapping(adapter->rx_scrq[i]->irq);
2732 adapter->rx_scrq[i]->irq = 0;
2735 release_sub_crq_queue(adapter, adapter->rx_scrq[i],
2739 kfree(adapter->rx_scrq);
2740 adapter->rx_scrq = NULL;
2741 adapter->num_active_rx_scrqs = 0;
2745 static int disable_scrq_irq(struct ibmvnic_adapter *adapter,
2746 struct ibmvnic_sub_crq_queue *scrq)
2748 struct device *dev = &adapter->vdev->dev;
2751 rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
2752 H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
2754 dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n",
2759 static int enable_scrq_irq(struct ibmvnic_adapter *adapter,
2760 struct ibmvnic_sub_crq_queue *scrq)
2762 struct device *dev = &adapter->vdev->dev;
2765 if (scrq->hw_irq > 0x100000000ULL) {
2766 dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq);
2770 if (adapter->resetting &&
2771 adapter->reset_reason == VNIC_RESET_MOBILITY) {
2772 u64 val = (0xff000000) | scrq->hw_irq;
2774 rc = plpar_hcall_norets(H_EOI, val);
2776 dev_err(dev, "H_EOI FAILED irq 0x%llx. rc=%ld\n",
2780 rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
2781 H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
2783 dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n",
2788 static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter,
2789 struct ibmvnic_sub_crq_queue *scrq)
2791 struct device *dev = &adapter->vdev->dev;
2792 struct ibmvnic_tx_pool *tx_pool;
2793 struct ibmvnic_tx_buff *txbuff;
2794 union sub_crq *next;
2800 while (pending_scrq(adapter, scrq)) {
2801 unsigned int pool = scrq->pool_index;
2802 int num_entries = 0;
2804 next = ibmvnic_next_scrq(adapter, scrq);
2805 for (i = 0; i < next->tx_comp.num_comps; i++) {
2806 if (next->tx_comp.rcs[i]) {
2807 dev_err(dev, "tx error %x\n",
2808 next->tx_comp.rcs[i]);
2811 index = be32_to_cpu(next->tx_comp.correlators[i]);
2812 if (index & IBMVNIC_TSO_POOL_MASK) {
2813 tx_pool = &adapter->tso_pool[pool];
2814 index &= ~IBMVNIC_TSO_POOL_MASK;
2816 tx_pool = &adapter->tx_pool[pool];
2819 txbuff = &tx_pool->tx_buff[index];
2821 for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) {
2822 if (!txbuff->data_dma[j])
2825 txbuff->data_dma[j] = 0;
2827 /* if sub_crq was sent indirectly */
2828 first = &txbuff->indir_arr[0].generic.first;
2829 if (*first == IBMVNIC_CRQ_CMD) {
2830 dma_unmap_single(dev, txbuff->indir_dma,
2831 sizeof(txbuff->indir_arr),
2836 if (txbuff->last_frag) {
2837 dev_kfree_skb_any(txbuff->skb);
2841 num_entries += txbuff->num_entries;
2843 tx_pool->free_map[tx_pool->producer_index] = index;
2844 tx_pool->producer_index =
2845 (tx_pool->producer_index + 1) %
2846 tx_pool->num_buffers;
2848 /* remove tx_comp scrq*/
2849 next->tx_comp.first = 0;
2851 if (atomic_sub_return(num_entries, &scrq->used) <=
2852 (adapter->req_tx_entries_per_subcrq / 2) &&
2853 __netif_subqueue_stopped(adapter->netdev,
2854 scrq->pool_index)) {
2855 netif_wake_subqueue(adapter->netdev, scrq->pool_index);
2856 netdev_dbg(adapter->netdev, "Started queue %d\n",
2861 enable_scrq_irq(adapter, scrq);
2863 if (pending_scrq(adapter, scrq)) {
2864 disable_scrq_irq(adapter, scrq);
2871 static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance)
2873 struct ibmvnic_sub_crq_queue *scrq = instance;
2874 struct ibmvnic_adapter *adapter = scrq->adapter;
2876 disable_scrq_irq(adapter, scrq);
2877 ibmvnic_complete_tx(adapter, scrq);
2882 static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance)
2884 struct ibmvnic_sub_crq_queue *scrq = instance;
2885 struct ibmvnic_adapter *adapter = scrq->adapter;
2887 /* When booting a kdump kernel we can hit pending interrupts
2888 * prior to completing driver initialization.
2890 if (unlikely(adapter->state != VNIC_OPEN))
2893 adapter->rx_stats_buffers[scrq->scrq_num].interrupts++;
2895 if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) {
2896 disable_scrq_irq(adapter, scrq);
2897 __napi_schedule(&adapter->napi[scrq->scrq_num]);
2903 static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter)
2905 struct device *dev = &adapter->vdev->dev;
2906 struct ibmvnic_sub_crq_queue *scrq;
2910 for (i = 0; i < adapter->req_tx_queues; i++) {
2911 netdev_dbg(adapter->netdev, "Initializing tx_scrq[%d] irq\n",
2913 scrq = adapter->tx_scrq[i];
2914 scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
2918 dev_err(dev, "Error mapping irq\n");
2919 goto req_tx_irq_failed;
2922 rc = request_irq(scrq->irq, ibmvnic_interrupt_tx,
2923 0, "ibmvnic_tx", scrq);
2926 dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n",
2928 irq_dispose_mapping(scrq->irq);
2929 goto req_tx_irq_failed;
2933 for (i = 0; i < adapter->req_rx_queues; i++) {
2934 netdev_dbg(adapter->netdev, "Initializing rx_scrq[%d] irq\n",
2936 scrq = adapter->rx_scrq[i];
2937 scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
2940 dev_err(dev, "Error mapping irq\n");
2941 goto req_rx_irq_failed;
2943 rc = request_irq(scrq->irq, ibmvnic_interrupt_rx,
2944 0, "ibmvnic_rx", scrq);
2946 dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n",
2948 irq_dispose_mapping(scrq->irq);
2949 goto req_rx_irq_failed;
2955 for (j = 0; j < i; j++) {
2956 free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]);
2957 irq_dispose_mapping(adapter->rx_scrq[j]->irq);
2959 i = adapter->req_tx_queues;
2961 for (j = 0; j < i; j++) {
2962 free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]);
2963 irq_dispose_mapping(adapter->rx_scrq[j]->irq);
2965 release_sub_crqs(adapter, 1);
2969 static int init_sub_crqs(struct ibmvnic_adapter *adapter)
2971 struct device *dev = &adapter->vdev->dev;
2972 struct ibmvnic_sub_crq_queue **allqueues;
2973 int registered_queues = 0;
2978 total_queues = adapter->req_tx_queues + adapter->req_rx_queues;
2980 allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_KERNEL);
2984 for (i = 0; i < total_queues; i++) {
2985 allqueues[i] = init_sub_crq_queue(adapter);
2986 if (!allqueues[i]) {
2987 dev_warn(dev, "Couldn't allocate all sub-crqs\n");
2990 registered_queues++;
2993 /* Make sure we were able to register the minimum number of queues */
2994 if (registered_queues <
2995 adapter->min_tx_queues + adapter->min_rx_queues) {
2996 dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n");
3000 /* Distribute the failed allocated queues*/
3001 for (i = 0; i < total_queues - registered_queues + more ; i++) {
3002 netdev_dbg(adapter->netdev, "Reducing number of queues\n");
3005 if (adapter->req_rx_queues > adapter->min_rx_queues)
3006 adapter->req_rx_queues--;
3011 if (adapter->req_tx_queues > adapter->min_tx_queues)
3012 adapter->req_tx_queues--;
3019 adapter->tx_scrq = kcalloc(adapter->req_tx_queues,
3020 sizeof(*adapter->tx_scrq), GFP_KERNEL);
3021 if (!adapter->tx_scrq)
3024 for (i = 0; i < adapter->req_tx_queues; i++) {
3025 adapter->tx_scrq[i] = allqueues[i];
3026 adapter->tx_scrq[i]->pool_index = i;
3027 adapter->num_active_tx_scrqs++;
3030 adapter->rx_scrq = kcalloc(adapter->req_rx_queues,
3031 sizeof(*adapter->rx_scrq), GFP_KERNEL);
3032 if (!adapter->rx_scrq)
3035 for (i = 0; i < adapter->req_rx_queues; i++) {
3036 adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues];
3037 adapter->rx_scrq[i]->scrq_num = i;
3038 adapter->num_active_rx_scrqs++;
3045 kfree(adapter->tx_scrq);
3046 adapter->tx_scrq = NULL;
3048 for (i = 0; i < registered_queues; i++)
3049 release_sub_crq_queue(adapter, allqueues[i], 1);
3054 static void ibmvnic_send_req_caps(struct ibmvnic_adapter *adapter, int retry)
3056 struct device *dev = &adapter->vdev->dev;
3057 union ibmvnic_crq crq;
3061 /* Sub-CRQ entries are 32 byte long */
3062 int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4);
3064 if (adapter->min_tx_entries_per_subcrq > entries_page ||
3065 adapter->min_rx_add_entries_per_subcrq > entries_page) {
3066 dev_err(dev, "Fatal, invalid entries per sub-crq\n");
3070 if (adapter->desired.mtu)
3071 adapter->req_mtu = adapter->desired.mtu;
3073 adapter->req_mtu = adapter->netdev->mtu + ETH_HLEN;
3075 if (!adapter->desired.tx_entries)
3076 adapter->desired.tx_entries =
3077 adapter->max_tx_entries_per_subcrq;
3078 if (!adapter->desired.rx_entries)
3079 adapter->desired.rx_entries =
3080 adapter->max_rx_add_entries_per_subcrq;
3082 max_entries = IBMVNIC_MAX_LTB_SIZE /
3083 (adapter->req_mtu + IBMVNIC_BUFFER_HLEN);
3085 if ((adapter->req_mtu + IBMVNIC_BUFFER_HLEN) *
3086 adapter->desired.tx_entries > IBMVNIC_MAX_LTB_SIZE) {
3087 adapter->desired.tx_entries = max_entries;
3090 if ((adapter->req_mtu + IBMVNIC_BUFFER_HLEN) *
3091 adapter->desired.rx_entries > IBMVNIC_MAX_LTB_SIZE) {
3092 adapter->desired.rx_entries = max_entries;
3095 if (adapter->desired.tx_entries)
3096 adapter->req_tx_entries_per_subcrq =
3097 adapter->desired.tx_entries;
3099 adapter->req_tx_entries_per_subcrq =
3100 adapter->max_tx_entries_per_subcrq;
3102 if (adapter->desired.rx_entries)
3103 adapter->req_rx_add_entries_per_subcrq =
3104 adapter->desired.rx_entries;
3106 adapter->req_rx_add_entries_per_subcrq =
3107 adapter->max_rx_add_entries_per_subcrq;
3109 if (adapter->desired.tx_queues)
3110 adapter->req_tx_queues =
3111 adapter->desired.tx_queues;
3113 adapter->req_tx_queues =
3114 adapter->opt_tx_comp_sub_queues;
3116 if (adapter->desired.rx_queues)
3117 adapter->req_rx_queues =
3118 adapter->desired.rx_queues;
3120 adapter->req_rx_queues =
3121 adapter->opt_rx_comp_queues;
3123 adapter->req_rx_add_queues = adapter->max_rx_add_queues;
3126 memset(&crq, 0, sizeof(crq));
3127 crq.request_capability.first = IBMVNIC_CRQ_CMD;
3128 crq.request_capability.cmd = REQUEST_CAPABILITY;
3130 crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES);
3131 crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues);
3132 atomic_inc(&adapter->running_cap_crqs);
3133 ibmvnic_send_crq(adapter, &crq);
3135 crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES);
3136 crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues);
3137 atomic_inc(&adapter->running_cap_crqs);
3138 ibmvnic_send_crq(adapter, &crq);
3140 crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES);
3141 crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues);
3142 atomic_inc(&adapter->running_cap_crqs);
3143 ibmvnic_send_crq(adapter, &crq);
3145 crq.request_capability.capability =
3146 cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ);
3147 crq.request_capability.number =
3148 cpu_to_be64(adapter->req_tx_entries_per_subcrq);
3149 atomic_inc(&adapter->running_cap_crqs);
3150 ibmvnic_send_crq(adapter, &crq);
3152 crq.request_capability.capability =
3153 cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ);
3154 crq.request_capability.number =
3155 cpu_to_be64(adapter->req_rx_add_entries_per_subcrq);
3156 atomic_inc(&adapter->running_cap_crqs);
3157 ibmvnic_send_crq(adapter, &crq);
3159 crq.request_capability.capability = cpu_to_be16(REQ_MTU);
3160 crq.request_capability.number = cpu_to_be64(adapter->req_mtu);
3161 atomic_inc(&adapter->running_cap_crqs);
3162 ibmvnic_send_crq(adapter, &crq);
3164 if (adapter->netdev->flags & IFF_PROMISC) {
3165 if (adapter->promisc_supported) {
3166 crq.request_capability.capability =
3167 cpu_to_be16(PROMISC_REQUESTED);
3168 crq.request_capability.number = cpu_to_be64(1);
3169 atomic_inc(&adapter->running_cap_crqs);
3170 ibmvnic_send_crq(adapter, &crq);
3173 crq.request_capability.capability =
3174 cpu_to_be16(PROMISC_REQUESTED);
3175 crq.request_capability.number = cpu_to_be64(0);
3176 atomic_inc(&adapter->running_cap_crqs);
3177 ibmvnic_send_crq(adapter, &crq);
3181 static int pending_scrq(struct ibmvnic_adapter *adapter,
3182 struct ibmvnic_sub_crq_queue *scrq)
3184 union sub_crq *entry = &scrq->msgs[scrq->cur];
3186 if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP)
3192 static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter,
3193 struct ibmvnic_sub_crq_queue *scrq)
3195 union sub_crq *entry;
3196 unsigned long flags;
3198 spin_lock_irqsave(&scrq->lock, flags);
3199 entry = &scrq->msgs[scrq->cur];
3200 if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) {
3201 if (++scrq->cur == scrq->size)
3206 spin_unlock_irqrestore(&scrq->lock, flags);
3211 static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter)
3213 struct ibmvnic_crq_queue *queue = &adapter->crq;
3214 union ibmvnic_crq *crq;
3216 crq = &queue->msgs[queue->cur];
3217 if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) {
3218 if (++queue->cur == queue->size)
3227 static void print_subcrq_error(struct device *dev, int rc, const char *func)
3231 dev_warn_ratelimited(dev,
3232 "%s failed: Send request is malformed or adapter failover pending. (rc=%d)\n",
3236 dev_warn_ratelimited(dev,
3237 "%s failed: Backing queue closed. Adapter is down or failover pending. (rc=%d)\n",
3241 dev_err_ratelimited(dev, "%s failed: (rc=%d)\n", func, rc);
3246 static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle,
3247 union sub_crq *sub_crq)
3249 unsigned int ua = adapter->vdev->unit_address;
3250 struct device *dev = &adapter->vdev->dev;
3251 u64 *u64_crq = (u64 *)sub_crq;
3254 netdev_dbg(adapter->netdev,
3255 "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n",
3256 (unsigned long int)cpu_to_be64(remote_handle),
3257 (unsigned long int)cpu_to_be64(u64_crq[0]),
3258 (unsigned long int)cpu_to_be64(u64_crq[1]),
3259 (unsigned long int)cpu_to_be64(u64_crq[2]),
3260 (unsigned long int)cpu_to_be64(u64_crq[3]));
3262 /* Make sure the hypervisor sees the complete request */
3265 rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua,
3266 cpu_to_be64(remote_handle),
3267 cpu_to_be64(u64_crq[0]),
3268 cpu_to_be64(u64_crq[1]),
3269 cpu_to_be64(u64_crq[2]),
3270 cpu_to_be64(u64_crq[3]));
3273 print_subcrq_error(dev, rc, __func__);
3278 static int send_subcrq_indirect(struct ibmvnic_adapter *adapter,
3279 u64 remote_handle, u64 ioba, u64 num_entries)
3281 unsigned int ua = adapter->vdev->unit_address;
3282 struct device *dev = &adapter->vdev->dev;
3285 /* Make sure the hypervisor sees the complete request */
3287 rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua,
3288 cpu_to_be64(remote_handle),
3292 print_subcrq_error(dev, rc, __func__);
3297 static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter,
3298 union ibmvnic_crq *crq)
3300 unsigned int ua = adapter->vdev->unit_address;
3301 struct device *dev = &adapter->vdev->dev;
3302 u64 *u64_crq = (u64 *)crq;
3305 netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n",
3306 (unsigned long int)cpu_to_be64(u64_crq[0]),
3307 (unsigned long int)cpu_to_be64(u64_crq[1]));
3309 if (!adapter->crq.active &&
3310 crq->generic.first != IBMVNIC_CRQ_INIT_CMD) {
3311 dev_warn(dev, "Invalid request detected while CRQ is inactive, possible device state change during reset\n");
3315 /* Make sure the hypervisor sees the complete request */
3318 rc = plpar_hcall_norets(H_SEND_CRQ, ua,
3319 cpu_to_be64(u64_crq[0]),
3320 cpu_to_be64(u64_crq[1]));
3323 if (rc == H_CLOSED) {
3324 dev_warn(dev, "CRQ Queue closed\n");
3325 if (adapter->resetting)
3326 ibmvnic_reset(adapter, VNIC_RESET_FATAL);
3329 dev_warn(dev, "Send error (rc=%d)\n", rc);
3335 static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter)
3337 union ibmvnic_crq crq;
3339 memset(&crq, 0, sizeof(crq));
3340 crq.generic.first = IBMVNIC_CRQ_INIT_CMD;
3341 crq.generic.cmd = IBMVNIC_CRQ_INIT;
3342 netdev_dbg(adapter->netdev, "Sending CRQ init\n");
3344 return ibmvnic_send_crq(adapter, &crq);
3347 static int send_version_xchg(struct ibmvnic_adapter *adapter)
3349 union ibmvnic_crq crq;
3351 memset(&crq, 0, sizeof(crq));
3352 crq.version_exchange.first = IBMVNIC_CRQ_CMD;
3353 crq.version_exchange.cmd = VERSION_EXCHANGE;
3354 crq.version_exchange.version = cpu_to_be16(ibmvnic_version);
3356 return ibmvnic_send_crq(adapter, &crq);
3359 struct vnic_login_client_data {
3365 static int vnic_client_data_len(struct ibmvnic_adapter *adapter)
3369 /* Calculate the amount of buffer space needed for the
3370 * vnic client data in the login buffer. There are four entries,
3371 * OS name, LPAR name, device name, and a null last entry.
3373 len = 4 * sizeof(struct vnic_login_client_data);
3374 len += 6; /* "Linux" plus NULL */
3375 len += strlen(utsname()->nodename) + 1;
3376 len += strlen(adapter->netdev->name) + 1;
3381 static void vnic_add_client_data(struct ibmvnic_adapter *adapter,
3382 struct vnic_login_client_data *vlcd)
3384 const char *os_name = "Linux";
3387 /* Type 1 - LPAR OS */
3389 len = strlen(os_name) + 1;
3390 vlcd->len = cpu_to_be16(len);
3391 strncpy(vlcd->name, os_name, len);
3392 vlcd = (struct vnic_login_client_data *)(vlcd->name + len);
3394 /* Type 2 - LPAR name */
3396 len = strlen(utsname()->nodename) + 1;
3397 vlcd->len = cpu_to_be16(len);
3398 strncpy(vlcd->name, utsname()->nodename, len);
3399 vlcd = (struct vnic_login_client_data *)(vlcd->name + len);
3401 /* Type 3 - device name */
3403 len = strlen(adapter->netdev->name) + 1;
3404 vlcd->len = cpu_to_be16(len);
3405 strncpy(vlcd->name, adapter->netdev->name, len);
3408 static int send_login(struct ibmvnic_adapter *adapter)
3410 struct ibmvnic_login_rsp_buffer *login_rsp_buffer;
3411 struct ibmvnic_login_buffer *login_buffer;
3412 struct device *dev = &adapter->vdev->dev;
3413 dma_addr_t rsp_buffer_token;
3414 dma_addr_t buffer_token;
3415 size_t rsp_buffer_size;
3416 union ibmvnic_crq crq;
3420 int client_data_len;
3421 struct vnic_login_client_data *vlcd;
3424 if (!adapter->tx_scrq || !adapter->rx_scrq) {
3425 netdev_err(adapter->netdev,
3426 "RX or TX queues are not allocated, device login failed\n");
3430 release_login_rsp_buffer(adapter);
3431 client_data_len = vnic_client_data_len(adapter);
3434 sizeof(struct ibmvnic_login_buffer) +
3435 sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues) +
3438 login_buffer = kzalloc(buffer_size, GFP_ATOMIC);
3440 goto buf_alloc_failed;
3442 buffer_token = dma_map_single(dev, login_buffer, buffer_size,
3444 if (dma_mapping_error(dev, buffer_token)) {
3445 dev_err(dev, "Couldn't map login buffer\n");
3446 goto buf_map_failed;
3449 rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) +
3450 sizeof(u64) * adapter->req_tx_queues +
3451 sizeof(u64) * adapter->req_rx_queues +
3452 sizeof(u64) * adapter->req_rx_queues +
3453 sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS;
3455 login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC);
3456 if (!login_rsp_buffer)
3457 goto buf_rsp_alloc_failed;
3459 rsp_buffer_token = dma_map_single(dev, login_rsp_buffer,
3460 rsp_buffer_size, DMA_FROM_DEVICE);
3461 if (dma_mapping_error(dev, rsp_buffer_token)) {
3462 dev_err(dev, "Couldn't map login rsp buffer\n");
3463 goto buf_rsp_map_failed;
3466 adapter->login_buf = login_buffer;
3467 adapter->login_buf_token = buffer_token;
3468 adapter->login_buf_sz = buffer_size;
3469 adapter->login_rsp_buf = login_rsp_buffer;
3470 adapter->login_rsp_buf_token = rsp_buffer_token;
3471 adapter->login_rsp_buf_sz = rsp_buffer_size;
3473 login_buffer->len = cpu_to_be32(buffer_size);
3474 login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB);
3475 login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues);
3476 login_buffer->off_txcomp_subcrqs =
3477 cpu_to_be32(sizeof(struct ibmvnic_login_buffer));
3478 login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues);
3479 login_buffer->off_rxcomp_subcrqs =
3480 cpu_to_be32(sizeof(struct ibmvnic_login_buffer) +
3481 sizeof(u64) * adapter->req_tx_queues);
3482 login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token);
3483 login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size);
3485 tx_list_p = (__be64 *)((char *)login_buffer +
3486 sizeof(struct ibmvnic_login_buffer));
3487 rx_list_p = (__be64 *)((char *)login_buffer +
3488 sizeof(struct ibmvnic_login_buffer) +
3489 sizeof(u64) * adapter->req_tx_queues);
3491 for (i = 0; i < adapter->req_tx_queues; i++) {
3492 if (adapter->tx_scrq[i]) {
3493 tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]->
3498 for (i = 0; i < adapter->req_rx_queues; i++) {
3499 if (adapter->rx_scrq[i]) {
3500 rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]->
3505 /* Insert vNIC login client data */
3506 vlcd = (struct vnic_login_client_data *)
3507 ((char *)rx_list_p + (sizeof(u64) * adapter->req_rx_queues));
3508 login_buffer->client_data_offset =
3509 cpu_to_be32((char *)vlcd - (char *)login_buffer);
3510 login_buffer->client_data_len = cpu_to_be32(client_data_len);
3512 vnic_add_client_data(adapter, vlcd);
3514 netdev_dbg(adapter->netdev, "Login Buffer:\n");
3515 for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) {
3516 netdev_dbg(adapter->netdev, "%016lx\n",
3517 ((unsigned long int *)(adapter->login_buf))[i]);
3520 memset(&crq, 0, sizeof(crq));
3521 crq.login.first = IBMVNIC_CRQ_CMD;
3522 crq.login.cmd = LOGIN;
3523 crq.login.ioba = cpu_to_be32(buffer_token);
3524 crq.login.len = cpu_to_be32(buffer_size);
3525 ibmvnic_send_crq(adapter, &crq);
3530 kfree(login_rsp_buffer);
3531 buf_rsp_alloc_failed:
3532 dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE);
3534 kfree(login_buffer);
3539 static int send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr,
3542 union ibmvnic_crq crq;
3544 memset(&crq, 0, sizeof(crq));
3545 crq.request_map.first = IBMVNIC_CRQ_CMD;
3546 crq.request_map.cmd = REQUEST_MAP;
3547 crq.request_map.map_id = map_id;
3548 crq.request_map.ioba = cpu_to_be32(addr);
3549 crq.request_map.len = cpu_to_be32(len);
3550 return ibmvnic_send_crq(adapter, &crq);
3553 static int send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id)
3555 union ibmvnic_crq crq;
3557 memset(&crq, 0, sizeof(crq));
3558 crq.request_unmap.first = IBMVNIC_CRQ_CMD;
3559 crq.request_unmap.cmd = REQUEST_UNMAP;
3560 crq.request_unmap.map_id = map_id;
3561 return ibmvnic_send_crq(adapter, &crq);
3564 static void send_map_query(struct ibmvnic_adapter *adapter)
3566 union ibmvnic_crq crq;
3568 memset(&crq, 0, sizeof(crq));
3569 crq.query_map.first = IBMVNIC_CRQ_CMD;
3570 crq.query_map.cmd = QUERY_MAP;
3571 ibmvnic_send_crq(adapter, &crq);
3574 /* Send a series of CRQs requesting various capabilities of the VNIC server */
3575 static void send_cap_queries(struct ibmvnic_adapter *adapter)
3577 union ibmvnic_crq crq;
3579 atomic_set(&adapter->running_cap_crqs, 0);
3580 memset(&crq, 0, sizeof(crq));
3581 crq.query_capability.first = IBMVNIC_CRQ_CMD;
3582 crq.query_capability.cmd = QUERY_CAPABILITY;
3584 crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES);
3585 atomic_inc(&adapter->running_cap_crqs);
3586 ibmvnic_send_crq(adapter, &crq);
3588 crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES);
3589 atomic_inc(&adapter->running_cap_crqs);
3590 ibmvnic_send_crq(adapter, &crq);
3592 crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES);
3593 atomic_inc(&adapter->running_cap_crqs);
3594 ibmvnic_send_crq(adapter, &crq);
3596 crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES);
3597 atomic_inc(&adapter->running_cap_crqs);
3598 ibmvnic_send_crq(adapter, &crq);
3600 crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES);
3601 atomic_inc(&adapter->running_cap_crqs);
3602 ibmvnic_send_crq(adapter, &crq);
3604 crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES);
3605 atomic_inc(&adapter->running_cap_crqs);
3606 ibmvnic_send_crq(adapter, &crq);
3608 crq.query_capability.capability =
3609 cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ);
3610 atomic_inc(&adapter->running_cap_crqs);
3611 ibmvnic_send_crq(adapter, &crq);
3613 crq.query_capability.capability =
3614 cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ);
3615 atomic_inc(&adapter->running_cap_crqs);
3616 ibmvnic_send_crq(adapter, &crq);
3618 crq.query_capability.capability =
3619 cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ);
3620 atomic_inc(&adapter->running_cap_crqs);
3621 ibmvnic_send_crq(adapter, &crq);
3623 crq.query_capability.capability =
3624 cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ);
3625 atomic_inc(&adapter->running_cap_crqs);
3626 ibmvnic_send_crq(adapter, &crq);
3628 crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD);
3629 atomic_inc(&adapter->running_cap_crqs);
3630 ibmvnic_send_crq(adapter, &crq);
3632 crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED);
3633 atomic_inc(&adapter->running_cap_crqs);
3634 ibmvnic_send_crq(adapter, &crq);
3636 crq.query_capability.capability = cpu_to_be16(MIN_MTU);
3637 atomic_inc(&adapter->running_cap_crqs);
3638 ibmvnic_send_crq(adapter, &crq);
3640 crq.query_capability.capability = cpu_to_be16(MAX_MTU);
3641 atomic_inc(&adapter->running_cap_crqs);
3642 ibmvnic_send_crq(adapter, &crq);
3644 crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS);
3645 atomic_inc(&adapter->running_cap_crqs);
3646 ibmvnic_send_crq(adapter, &crq);
3648 crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION);
3649 atomic_inc(&adapter->running_cap_crqs);
3650 ibmvnic_send_crq(adapter, &crq);
3652 crq.query_capability.capability = cpu_to_be16(RX_VLAN_HEADER_INSERTION);
3653 atomic_inc(&adapter->running_cap_crqs);
3654 ibmvnic_send_crq(adapter, &crq);
3656 crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES);
3657 atomic_inc(&adapter->running_cap_crqs);
3658 ibmvnic_send_crq(adapter, &crq);
3660 crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED);
3661 atomic_inc(&adapter->running_cap_crqs);
3662 ibmvnic_send_crq(adapter, &crq);
3664 crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES);
3665 atomic_inc(&adapter->running_cap_crqs);
3666 ibmvnic_send_crq(adapter, &crq);
3668 crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES);
3669 atomic_inc(&adapter->running_cap_crqs);
3670 ibmvnic_send_crq(adapter, &crq);
3672 crq.query_capability.capability =
3673 cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q);
3674 atomic_inc(&adapter->running_cap_crqs);
3675 ibmvnic_send_crq(adapter, &crq);
3677 crq.query_capability.capability =
3678 cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ);
3679 atomic_inc(&adapter->running_cap_crqs);
3680 ibmvnic_send_crq(adapter, &crq);
3682 crq.query_capability.capability =
3683 cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ);
3684 atomic_inc(&adapter->running_cap_crqs);
3685 ibmvnic_send_crq(adapter, &crq);
3687 crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ);
3688 atomic_inc(&adapter->running_cap_crqs);
3689 ibmvnic_send_crq(adapter, &crq);
3692 static void handle_vpd_size_rsp(union ibmvnic_crq *crq,
3693 struct ibmvnic_adapter *adapter)
3695 struct device *dev = &adapter->vdev->dev;
3697 if (crq->get_vpd_size_rsp.rc.code) {
3698 dev_err(dev, "Error retrieving VPD size, rc=%x\n",
3699 crq->get_vpd_size_rsp.rc.code);
3700 complete(&adapter->fw_done);
3704 adapter->vpd->len = be64_to_cpu(crq->get_vpd_size_rsp.len);
3705 complete(&adapter->fw_done);
3708 static void handle_vpd_rsp(union ibmvnic_crq *crq,
3709 struct ibmvnic_adapter *adapter)
3711 struct device *dev = &adapter->vdev->dev;
3712 unsigned char *substr = NULL;
3713 u8 fw_level_len = 0;
3715 memset(adapter->fw_version, 0, 32);
3717 dma_unmap_single(dev, adapter->vpd->dma_addr, adapter->vpd->len,
3720 if (crq->get_vpd_rsp.rc.code) {
3721 dev_err(dev, "Error retrieving VPD from device, rc=%x\n",
3722 crq->get_vpd_rsp.rc.code);
3726 /* get the position of the firmware version info
3727 * located after the ASCII 'RM' substring in the buffer
3729 substr = strnstr(adapter->vpd->buff, "RM", adapter->vpd->len);
3731 dev_info(dev, "Warning - No FW level has been provided in the VPD buffer by the VIOS Server\n");
3735 /* get length of firmware level ASCII substring */
3736 if ((substr + 2) < (adapter->vpd->buff + adapter->vpd->len)) {
3737 fw_level_len = *(substr + 2);
3739 dev_info(dev, "Length of FW substr extrapolated VDP buff\n");
3743 /* copy firmware version string from vpd into adapter */
3744 if ((substr + 3 + fw_level_len) <
3745 (adapter->vpd->buff + adapter->vpd->len)) {
3746 strncpy((char *)adapter->fw_version, substr + 3, fw_level_len);
3748 dev_info(dev, "FW substr extrapolated VPD buff\n");
3752 if (adapter->fw_version[0] == '\0')
3753 strncpy((char *)adapter->fw_version, "N/A", 3 * sizeof(char));
3754 complete(&adapter->fw_done);
3757 static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter)
3759 struct device *dev = &adapter->vdev->dev;
3760 struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf;
3761 netdev_features_t old_hw_features = 0;
3762 union ibmvnic_crq crq;
3765 dma_unmap_single(dev, adapter->ip_offload_tok,
3766 sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE);
3768 netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n");
3769 for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++)
3770 netdev_dbg(adapter->netdev, "%016lx\n",
3771 ((unsigned long int *)(buf))[i]);
3773 netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum);
3774 netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum);
3775 netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n",
3776 buf->tcp_ipv4_chksum);
3777 netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n",
3778 buf->tcp_ipv6_chksum);
3779 netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n",
3780 buf->udp_ipv4_chksum);
3781 netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n",
3782 buf->udp_ipv6_chksum);
3783 netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n",
3784 buf->large_tx_ipv4);
3785 netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n",
3786 buf->large_tx_ipv6);
3787 netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n",
3788 buf->large_rx_ipv4);
3789 netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n",
3790 buf->large_rx_ipv6);
3791 netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n",
3792 buf->max_ipv4_header_size);
3793 netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n",
3794 buf->max_ipv6_header_size);
3795 netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n",
3796 buf->max_tcp_header_size);
3797 netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n",
3798 buf->max_udp_header_size);
3799 netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n",
3800 buf->max_large_tx_size);
3801 netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n",
3802 buf->max_large_rx_size);
3803 netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n",
3804 buf->ipv6_extension_header);
3805 netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n",
3806 buf->tcp_pseudosum_req);
3807 netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n",
3808 buf->num_ipv6_ext_headers);
3809 netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n",
3810 buf->off_ipv6_ext_headers);
3812 adapter->ip_offload_ctrl_tok =
3813 dma_map_single(dev, &adapter->ip_offload_ctrl,
3814 sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE);
3816 if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) {
3817 dev_err(dev, "Couldn't map ip offload control buffer\n");
3821 adapter->ip_offload_ctrl.len =
3822 cpu_to_be32(sizeof(adapter->ip_offload_ctrl));
3823 adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB);
3824 adapter->ip_offload_ctrl.ipv4_chksum = buf->ipv4_chksum;
3825 adapter->ip_offload_ctrl.ipv6_chksum = buf->ipv6_chksum;
3826 adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum;
3827 adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum;
3828 adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum;
3829 adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum;
3830 adapter->ip_offload_ctrl.large_tx_ipv4 = buf->large_tx_ipv4;
3831 adapter->ip_offload_ctrl.large_tx_ipv6 = buf->large_tx_ipv6;
3833 /* large_rx disabled for now, additional features needed */
3834 adapter->ip_offload_ctrl.large_rx_ipv4 = 0;
3835 adapter->ip_offload_ctrl.large_rx_ipv6 = 0;
3837 if (adapter->state != VNIC_PROBING) {
3838 old_hw_features = adapter->netdev->hw_features;
3839 adapter->netdev->hw_features = 0;
3842 adapter->netdev->hw_features = NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;
3844 if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum)
3845 adapter->netdev->hw_features |= NETIF_F_IP_CSUM;
3847 if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum)
3848 adapter->netdev->hw_features |= NETIF_F_IPV6_CSUM;
3850 if ((adapter->netdev->features &
3851 (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)))
3852 adapter->netdev->hw_features |= NETIF_F_RXCSUM;
3854 if (buf->large_tx_ipv4)
3855 adapter->netdev->hw_features |= NETIF_F_TSO;
3856 if (buf->large_tx_ipv6)
3857 adapter->netdev->hw_features |= NETIF_F_TSO6;
3859 if (adapter->state == VNIC_PROBING) {
3860 adapter->netdev->features |= adapter->netdev->hw_features;
3861 } else if (old_hw_features != adapter->netdev->hw_features) {
3862 netdev_features_t tmp = 0;
3864 /* disable features no longer supported */
3865 adapter->netdev->features &= adapter->netdev->hw_features;
3866 /* turn on features now supported if previously enabled */
3867 tmp = (old_hw_features ^ adapter->netdev->hw_features) &
3868 adapter->netdev->hw_features;
3869 adapter->netdev->features |=
3870 tmp & adapter->netdev->wanted_features;
3873 memset(&crq, 0, sizeof(crq));
3874 crq.control_ip_offload.first = IBMVNIC_CRQ_CMD;
3875 crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD;
3876 crq.control_ip_offload.len =
3877 cpu_to_be32(sizeof(adapter->ip_offload_ctrl));
3878 crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok);
3879 ibmvnic_send_crq(adapter, &crq);
3882 static const char *ibmvnic_fw_err_cause(u16 cause)
3885 case ADAPTER_PROBLEM:
3886 return "adapter problem";
3888 return "bus problem";
3890 return "firmware problem";
3892 return "device driver problem";
3894 return "EEH recovery";
3896 return "firmware updated";
3898 return "low Memory";
3904 static void handle_error_indication(union ibmvnic_crq *crq,
3905 struct ibmvnic_adapter *adapter)
3907 struct device *dev = &adapter->vdev->dev;
3910 cause = be16_to_cpu(crq->error_indication.error_cause);
3912 dev_warn_ratelimited(dev,
3913 "Firmware reports %serror, cause: %s. Starting recovery...\n",
3914 crq->error_indication.flags
3915 & IBMVNIC_FATAL_ERROR ? "FATAL " : "",
3916 ibmvnic_fw_err_cause(cause));
3918 if (crq->error_indication.flags & IBMVNIC_FATAL_ERROR)
3919 ibmvnic_reset(adapter, VNIC_RESET_FATAL);
3921 ibmvnic_reset(adapter, VNIC_RESET_NON_FATAL);
3924 static int handle_change_mac_rsp(union ibmvnic_crq *crq,
3925 struct ibmvnic_adapter *adapter)
3927 struct net_device *netdev = adapter->netdev;
3928 struct device *dev = &adapter->vdev->dev;
3931 rc = crq->change_mac_addr_rsp.rc.code;
3933 dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc);
3936 memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0],
3939 complete(&adapter->fw_done);
3943 static void handle_request_cap_rsp(union ibmvnic_crq *crq,
3944 struct ibmvnic_adapter *adapter)
3946 struct device *dev = &adapter->vdev->dev;
3950 atomic_dec(&adapter->running_cap_crqs);
3951 switch (be16_to_cpu(crq->request_capability_rsp.capability)) {
3953 req_value = &adapter->req_tx_queues;
3957 req_value = &adapter->req_rx_queues;
3960 case REQ_RX_ADD_QUEUES:
3961 req_value = &adapter->req_rx_add_queues;
3964 case REQ_TX_ENTRIES_PER_SUBCRQ:
3965 req_value = &adapter->req_tx_entries_per_subcrq;
3966 name = "tx_entries_per_subcrq";
3968 case REQ_RX_ADD_ENTRIES_PER_SUBCRQ:
3969 req_value = &adapter->req_rx_add_entries_per_subcrq;
3970 name = "rx_add_entries_per_subcrq";
3973 req_value = &adapter->req_mtu;
3976 case PROMISC_REQUESTED:
3977 req_value = &adapter->promisc;
3981 dev_err(dev, "Got invalid cap request rsp %d\n",
3982 crq->request_capability.capability);
3986 switch (crq->request_capability_rsp.rc.code) {
3989 case PARTIALSUCCESS:
3990 dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n",
3992 (long int)be64_to_cpu(crq->request_capability_rsp.
3995 if (be16_to_cpu(crq->request_capability_rsp.capability) ==
3997 pr_err("mtu of %llu is not supported. Reverting.\n",
3999 *req_value = adapter->fallback.mtu;
4002 be64_to_cpu(crq->request_capability_rsp.number);
4005 ibmvnic_send_req_caps(adapter, 1);
4008 dev_err(dev, "Error %d in request cap rsp\n",
4009 crq->request_capability_rsp.rc.code);
4013 /* Done receiving requested capabilities, query IP offload support */
4014 if (atomic_read(&adapter->running_cap_crqs) == 0) {
4015 union ibmvnic_crq newcrq;
4016 int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer);
4017 struct ibmvnic_query_ip_offload_buffer *ip_offload_buf =
4018 &adapter->ip_offload_buf;
4020 adapter->wait_capability = false;
4021 adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf,
4025 if (dma_mapping_error(dev, adapter->ip_offload_tok)) {
4026 if (!firmware_has_feature(FW_FEATURE_CMO))
4027 dev_err(dev, "Couldn't map offload buffer\n");
4031 memset(&newcrq, 0, sizeof(newcrq));
4032 newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD;
4033 newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD;
4034 newcrq.query_ip_offload.len = cpu_to_be32(buf_sz);
4035 newcrq.query_ip_offload.ioba =
4036 cpu_to_be32(adapter->ip_offload_tok);
4038 ibmvnic_send_crq(adapter, &newcrq);
4042 static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq,
4043 struct ibmvnic_adapter *adapter)
4045 struct device *dev = &adapter->vdev->dev;
4046 struct net_device *netdev = adapter->netdev;
4047 struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf;
4048 struct ibmvnic_login_buffer *login = adapter->login_buf;
4051 dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz,
4053 dma_unmap_single(dev, adapter->login_rsp_buf_token,
4054 adapter->login_rsp_buf_sz, DMA_FROM_DEVICE);
4056 /* If the number of queues requested can't be allocated by the
4057 * server, the login response will return with code 1. We will need
4058 * to resend the login buffer with fewer queues requested.
4060 if (login_rsp_crq->generic.rc.code) {
4061 adapter->init_done_rc = login_rsp_crq->generic.rc.code;
4062 complete(&adapter->init_done);
4066 netdev->mtu = adapter->req_mtu - ETH_HLEN;
4068 netdev_dbg(adapter->netdev, "Login Response Buffer:\n");
4069 for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) {
4070 netdev_dbg(adapter->netdev, "%016lx\n",
4071 ((unsigned long int *)(adapter->login_rsp_buf))[i]);
4075 if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs ||
4076 (be32_to_cpu(login->num_rxcomp_subcrqs) *
4077 adapter->req_rx_add_queues !=
4078 be32_to_cpu(login_rsp->num_rxadd_subcrqs))) {
4079 dev_err(dev, "FATAL: Inconsistent login and login rsp\n");
4080 ibmvnic_remove(adapter->vdev);
4083 release_login_buffer(adapter);
4084 complete(&adapter->init_done);
4089 static void handle_request_unmap_rsp(union ibmvnic_crq *crq,
4090 struct ibmvnic_adapter *adapter)
4092 struct device *dev = &adapter->vdev->dev;
4095 rc = crq->request_unmap_rsp.rc.code;
4097 dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc);
4100 static void handle_query_map_rsp(union ibmvnic_crq *crq,
4101 struct ibmvnic_adapter *adapter)
4103 struct net_device *netdev = adapter->netdev;
4104 struct device *dev = &adapter->vdev->dev;
4107 rc = crq->query_map_rsp.rc.code;
4109 dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc);
4112 netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n",
4113 crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages,
4114 crq->query_map_rsp.free_pages);
4117 static void handle_query_cap_rsp(union ibmvnic_crq *crq,
4118 struct ibmvnic_adapter *adapter)
4120 struct net_device *netdev = adapter->netdev;
4121 struct device *dev = &adapter->vdev->dev;
4124 atomic_dec(&adapter->running_cap_crqs);
4125 netdev_dbg(netdev, "Outstanding queries: %d\n",
4126 atomic_read(&adapter->running_cap_crqs));
4127 rc = crq->query_capability.rc.code;
4129 dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc);
4133 switch (be16_to_cpu(crq->query_capability.capability)) {
4135 adapter->min_tx_queues =
4136 be64_to_cpu(crq->query_capability.number);
4137 netdev_dbg(netdev, "min_tx_queues = %lld\n",
4138 adapter->min_tx_queues);
4141 adapter->min_rx_queues =
4142 be64_to_cpu(crq->query_capability.number);
4143 netdev_dbg(netdev, "min_rx_queues = %lld\n",
4144 adapter->min_rx_queues);
4146 case MIN_RX_ADD_QUEUES:
4147 adapter->min_rx_add_queues =
4148 be64_to_cpu(crq->query_capability.number);
4149 netdev_dbg(netdev, "min_rx_add_queues = %lld\n",
4150 adapter->min_rx_add_queues);
4153 adapter->max_tx_queues =
4154 be64_to_cpu(crq->query_capability.number);
4155 netdev_dbg(netdev, "max_tx_queues = %lld\n",
4156 adapter->max_tx_queues);
4159 adapter->max_rx_queues =
4160 be64_to_cpu(crq->query_capability.number);
4161 netdev_dbg(netdev, "max_rx_queues = %lld\n",
4162 adapter->max_rx_queues);
4164 case MAX_RX_ADD_QUEUES:
4165 adapter->max_rx_add_queues =
4166 be64_to_cpu(crq->query_capability.number);
4167 netdev_dbg(netdev, "max_rx_add_queues = %lld\n",
4168 adapter->max_rx_add_queues);
4170 case MIN_TX_ENTRIES_PER_SUBCRQ:
4171 adapter->min_tx_entries_per_subcrq =
4172 be64_to_cpu(crq->query_capability.number);
4173 netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n",
4174 adapter->min_tx_entries_per_subcrq);
4176 case MIN_RX_ADD_ENTRIES_PER_SUBCRQ:
4177 adapter->min_rx_add_entries_per_subcrq =
4178 be64_to_cpu(crq->query_capability.number);
4179 netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n",
4180 adapter->min_rx_add_entries_per_subcrq);
4182 case MAX_TX_ENTRIES_PER_SUBCRQ:
4183 adapter->max_tx_entries_per_subcrq =
4184 be64_to_cpu(crq->query_capability.number);
4185 netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n",
4186 adapter->max_tx_entries_per_subcrq);
4188 case MAX_RX_ADD_ENTRIES_PER_SUBCRQ:
4189 adapter->max_rx_add_entries_per_subcrq =
4190 be64_to_cpu(crq->query_capability.number);
4191 netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n",
4192 adapter->max_rx_add_entries_per_subcrq);
4194 case TCP_IP_OFFLOAD:
4195 adapter->tcp_ip_offload =
4196 be64_to_cpu(crq->query_capability.number);
4197 netdev_dbg(netdev, "tcp_ip_offload = %lld\n",
4198 adapter->tcp_ip_offload);
4200 case PROMISC_SUPPORTED:
4201 adapter->promisc_supported =
4202 be64_to_cpu(crq->query_capability.number);
4203 netdev_dbg(netdev, "promisc_supported = %lld\n",
4204 adapter->promisc_supported);
4207 adapter->min_mtu = be64_to_cpu(crq->query_capability.number);
4208 netdev->min_mtu = adapter->min_mtu - ETH_HLEN;
4209 netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu);
4212 adapter->max_mtu = be64_to_cpu(crq->query_capability.number);
4213 netdev->max_mtu = adapter->max_mtu - ETH_HLEN;
4214 netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu);
4216 case MAX_MULTICAST_FILTERS:
4217 adapter->max_multicast_filters =
4218 be64_to_cpu(crq->query_capability.number);
4219 netdev_dbg(netdev, "max_multicast_filters = %lld\n",
4220 adapter->max_multicast_filters);
4222 case VLAN_HEADER_INSERTION:
4223 adapter->vlan_header_insertion =
4224 be64_to_cpu(crq->query_capability.number);
4225 if (adapter->vlan_header_insertion)
4226 netdev->features |= NETIF_F_HW_VLAN_STAG_TX;
4227 netdev_dbg(netdev, "vlan_header_insertion = %lld\n",
4228 adapter->vlan_header_insertion);
4230 case RX_VLAN_HEADER_INSERTION:
4231 adapter->rx_vlan_header_insertion =
4232 be64_to_cpu(crq->query_capability.number);
4233 netdev_dbg(netdev, "rx_vlan_header_insertion = %lld\n",
4234 adapter->rx_vlan_header_insertion);
4236 case MAX_TX_SG_ENTRIES:
4237 adapter->max_tx_sg_entries =
4238 be64_to_cpu(crq->query_capability.number);
4239 netdev_dbg(netdev, "max_tx_sg_entries = %lld\n",
4240 adapter->max_tx_sg_entries);
4242 case RX_SG_SUPPORTED:
4243 adapter->rx_sg_supported =
4244 be64_to_cpu(crq->query_capability.number);
4245 netdev_dbg(netdev, "rx_sg_supported = %lld\n",
4246 adapter->rx_sg_supported);
4248 case OPT_TX_COMP_SUB_QUEUES:
4249 adapter->opt_tx_comp_sub_queues =
4250 be64_to_cpu(crq->query_capability.number);
4251 netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n",
4252 adapter->opt_tx_comp_sub_queues);
4254 case OPT_RX_COMP_QUEUES:
4255 adapter->opt_rx_comp_queues =
4256 be64_to_cpu(crq->query_capability.number);
4257 netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n",
4258 adapter->opt_rx_comp_queues);
4260 case OPT_RX_BUFADD_Q_PER_RX_COMP_Q:
4261 adapter->opt_rx_bufadd_q_per_rx_comp_q =
4262 be64_to_cpu(crq->query_capability.number);
4263 netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n",
4264 adapter->opt_rx_bufadd_q_per_rx_comp_q);
4266 case OPT_TX_ENTRIES_PER_SUBCRQ:
4267 adapter->opt_tx_entries_per_subcrq =
4268 be64_to_cpu(crq->query_capability.number);
4269 netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n",
4270 adapter->opt_tx_entries_per_subcrq);
4272 case OPT_RXBA_ENTRIES_PER_SUBCRQ:
4273 adapter->opt_rxba_entries_per_subcrq =
4274 be64_to_cpu(crq->query_capability.number);
4275 netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n",
4276 adapter->opt_rxba_entries_per_subcrq);
4278 case TX_RX_DESC_REQ:
4279 adapter->tx_rx_desc_req = crq->query_capability.number;
4280 netdev_dbg(netdev, "tx_rx_desc_req = %llx\n",
4281 adapter->tx_rx_desc_req);
4285 netdev_err(netdev, "Got invalid cap rsp %d\n",
4286 crq->query_capability.capability);
4290 if (atomic_read(&adapter->running_cap_crqs) == 0) {
4291 adapter->wait_capability = false;
4292 ibmvnic_send_req_caps(adapter, 0);
4296 static int send_query_phys_parms(struct ibmvnic_adapter *adapter)
4298 union ibmvnic_crq crq;
4301 memset(&crq, 0, sizeof(crq));
4302 crq.query_phys_parms.first = IBMVNIC_CRQ_CMD;
4303 crq.query_phys_parms.cmd = QUERY_PHYS_PARMS;
4304 init_completion(&adapter->fw_done);
4305 rc = ibmvnic_send_crq(adapter, &crq);
4308 wait_for_completion(&adapter->fw_done);
4309 return adapter->fw_done_rc ? -EIO : 0;
4312 static int handle_query_phys_parms_rsp(union ibmvnic_crq *crq,
4313 struct ibmvnic_adapter *adapter)
4315 struct net_device *netdev = adapter->netdev;
4318 rc = crq->query_phys_parms_rsp.rc.code;
4320 netdev_err(netdev, "Error %d in QUERY_PHYS_PARMS\n", rc);
4323 switch (cpu_to_be32(crq->query_phys_parms_rsp.speed)) {
4324 case IBMVNIC_10MBPS:
4325 adapter->speed = SPEED_10;
4327 case IBMVNIC_100MBPS:
4328 adapter->speed = SPEED_100;
4331 adapter->speed = SPEED_1000;
4334 adapter->speed = SPEED_10000;
4336 case IBMVNIC_25GBPS:
4337 adapter->speed = SPEED_25000;
4339 case IBMVNIC_40GBPS:
4340 adapter->speed = SPEED_40000;
4342 case IBMVNIC_50GBPS:
4343 adapter->speed = SPEED_50000;
4345 case IBMVNIC_100GBPS:
4346 adapter->speed = SPEED_100000;
4349 netdev_warn(netdev, "Unknown speed 0x%08x\n",
4350 cpu_to_be32(crq->query_phys_parms_rsp.speed));
4351 adapter->speed = SPEED_UNKNOWN;
4353 if (crq->query_phys_parms_rsp.flags1 & IBMVNIC_FULL_DUPLEX)
4354 adapter->duplex = DUPLEX_FULL;
4355 else if (crq->query_phys_parms_rsp.flags1 & IBMVNIC_HALF_DUPLEX)
4356 adapter->duplex = DUPLEX_HALF;
4358 adapter->duplex = DUPLEX_UNKNOWN;
4363 static void ibmvnic_handle_crq(union ibmvnic_crq *crq,
4364 struct ibmvnic_adapter *adapter)
4366 struct ibmvnic_generic_crq *gen_crq = &crq->generic;
4367 struct net_device *netdev = adapter->netdev;
4368 struct device *dev = &adapter->vdev->dev;
4369 u64 *u64_crq = (u64 *)crq;
4372 netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n",
4373 (unsigned long int)cpu_to_be64(u64_crq[0]),
4374 (unsigned long int)cpu_to_be64(u64_crq[1]));
4375 switch (gen_crq->first) {
4376 case IBMVNIC_CRQ_INIT_RSP:
4377 switch (gen_crq->cmd) {
4378 case IBMVNIC_CRQ_INIT:
4379 dev_info(dev, "Partner initialized\n");
4380 adapter->from_passive_init = true;
4381 adapter->failover_pending = false;
4382 if (!completion_done(&adapter->init_done)) {
4383 complete(&adapter->init_done);
4384 adapter->init_done_rc = -EIO;
4386 ibmvnic_reset(adapter, VNIC_RESET_FAILOVER);
4388 case IBMVNIC_CRQ_INIT_COMPLETE:
4389 dev_info(dev, "Partner initialization complete\n");
4390 adapter->crq.active = true;
4391 send_version_xchg(adapter);
4394 dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd);
4397 case IBMVNIC_CRQ_XPORT_EVENT:
4398 netif_carrier_off(netdev);
4399 adapter->crq.active = false;
4400 if (adapter->resetting)
4401 adapter->force_reset_recovery = true;
4402 if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) {
4403 dev_info(dev, "Migrated, re-enabling adapter\n");
4404 ibmvnic_reset(adapter, VNIC_RESET_MOBILITY);
4405 } else if (gen_crq->cmd == IBMVNIC_DEVICE_FAILOVER) {
4406 dev_info(dev, "Backing device failover detected\n");
4407 adapter->failover_pending = true;
4409 /* The adapter lost the connection */
4410 dev_err(dev, "Virtual Adapter failed (rc=%d)\n",
4412 ibmvnic_reset(adapter, VNIC_RESET_FATAL);
4415 case IBMVNIC_CRQ_CMD_RSP:
4418 dev_err(dev, "Got an invalid msg type 0x%02x\n",
4423 switch (gen_crq->cmd) {
4424 case VERSION_EXCHANGE_RSP:
4425 rc = crq->version_exchange_rsp.rc.code;
4427 dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc);
4430 dev_info(dev, "Partner protocol version is %d\n",
4431 crq->version_exchange_rsp.version);
4432 if (be16_to_cpu(crq->version_exchange_rsp.version) <
4435 be16_to_cpu(crq->version_exchange_rsp.version);
4436 send_cap_queries(adapter);
4438 case QUERY_CAPABILITY_RSP:
4439 handle_query_cap_rsp(crq, adapter);
4442 handle_query_map_rsp(crq, adapter);
4444 case REQUEST_MAP_RSP:
4445 adapter->fw_done_rc = crq->request_map_rsp.rc.code;
4446 complete(&adapter->fw_done);
4448 case REQUEST_UNMAP_RSP:
4449 handle_request_unmap_rsp(crq, adapter);
4451 case REQUEST_CAPABILITY_RSP:
4452 handle_request_cap_rsp(crq, adapter);
4455 netdev_dbg(netdev, "Got Login Response\n");
4456 handle_login_rsp(crq, adapter);
4458 case LOGICAL_LINK_STATE_RSP:
4460 "Got Logical Link State Response, state: %d rc: %d\n",
4461 crq->logical_link_state_rsp.link_state,
4462 crq->logical_link_state_rsp.rc.code);
4463 adapter->logical_link_state =
4464 crq->logical_link_state_rsp.link_state;
4465 adapter->init_done_rc = crq->logical_link_state_rsp.rc.code;
4466 complete(&adapter->init_done);
4468 case LINK_STATE_INDICATION:
4469 netdev_dbg(netdev, "Got Logical Link State Indication\n");
4470 adapter->phys_link_state =
4471 crq->link_state_indication.phys_link_state;
4472 adapter->logical_link_state =
4473 crq->link_state_indication.logical_link_state;
4475 case CHANGE_MAC_ADDR_RSP:
4476 netdev_dbg(netdev, "Got MAC address change Response\n");
4477 adapter->fw_done_rc = handle_change_mac_rsp(crq, adapter);
4479 case ERROR_INDICATION:
4480 netdev_dbg(netdev, "Got Error Indication\n");
4481 handle_error_indication(crq, adapter);
4483 case REQUEST_STATISTICS_RSP:
4484 netdev_dbg(netdev, "Got Statistics Response\n");
4485 complete(&adapter->stats_done);
4487 case QUERY_IP_OFFLOAD_RSP:
4488 netdev_dbg(netdev, "Got Query IP offload Response\n");
4489 handle_query_ip_offload_rsp(adapter);
4491 case MULTICAST_CTRL_RSP:
4492 netdev_dbg(netdev, "Got multicast control Response\n");
4494 case CONTROL_IP_OFFLOAD_RSP:
4495 netdev_dbg(netdev, "Got Control IP offload Response\n");
4496 dma_unmap_single(dev, adapter->ip_offload_ctrl_tok,
4497 sizeof(adapter->ip_offload_ctrl),
4499 complete(&adapter->init_done);
4501 case COLLECT_FW_TRACE_RSP:
4502 netdev_dbg(netdev, "Got Collect firmware trace Response\n");
4503 complete(&adapter->fw_done);
4505 case GET_VPD_SIZE_RSP:
4506 handle_vpd_size_rsp(crq, adapter);
4509 handle_vpd_rsp(crq, adapter);
4511 case QUERY_PHYS_PARMS_RSP:
4512 adapter->fw_done_rc = handle_query_phys_parms_rsp(crq, adapter);
4513 complete(&adapter->fw_done);
4516 netdev_err(netdev, "Got an invalid cmd type 0x%02x\n",
4521 static irqreturn_t ibmvnic_interrupt(int irq, void *instance)
4523 struct ibmvnic_adapter *adapter = instance;
4525 tasklet_schedule(&adapter->tasklet);
4529 static void ibmvnic_tasklet(void *data)
4531 struct ibmvnic_adapter *adapter = data;
4532 struct ibmvnic_crq_queue *queue = &adapter->crq;
4533 union ibmvnic_crq *crq;
4534 unsigned long flags;
4537 spin_lock_irqsave(&queue->lock, flags);
4539 /* Pull all the valid messages off the CRQ */
4540 while ((crq = ibmvnic_next_crq(adapter)) != NULL) {
4541 ibmvnic_handle_crq(crq, adapter);
4542 crq->generic.first = 0;
4545 /* remain in tasklet until all
4546 * capabilities responses are received
4548 if (!adapter->wait_capability)
4551 /* if capabilities CRQ's were sent in this tasklet, the following
4552 * tasklet must wait until all responses are received
4554 if (atomic_read(&adapter->running_cap_crqs) != 0)
4555 adapter->wait_capability = true;
4556 spin_unlock_irqrestore(&queue->lock, flags);
4559 static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter)
4561 struct vio_dev *vdev = adapter->vdev;
4565 rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
4566 } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc));
4569 dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc);
4574 static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter)
4576 struct ibmvnic_crq_queue *crq = &adapter->crq;
4577 struct device *dev = &adapter->vdev->dev;
4578 struct vio_dev *vdev = adapter->vdev;
4583 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
4584 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
4586 /* Clean out the queue */
4587 memset(crq->msgs, 0, PAGE_SIZE);
4589 crq->active = false;
4591 /* And re-open it again */
4592 rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
4593 crq->msg_token, PAGE_SIZE);
4596 /* Adapter is good, but other end is not ready */
4597 dev_warn(dev, "Partner adapter not ready\n");
4599 dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc);
4604 static void release_crq_queue(struct ibmvnic_adapter *adapter)
4606 struct ibmvnic_crq_queue *crq = &adapter->crq;
4607 struct vio_dev *vdev = adapter->vdev;
4613 netdev_dbg(adapter->netdev, "Releasing CRQ\n");
4614 free_irq(vdev->irq, adapter);
4615 tasklet_kill(&adapter->tasklet);
4617 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
4618 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
4620 dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE,
4622 free_page((unsigned long)crq->msgs);
4624 crq->active = false;
4627 static int init_crq_queue(struct ibmvnic_adapter *adapter)
4629 struct ibmvnic_crq_queue *crq = &adapter->crq;
4630 struct device *dev = &adapter->vdev->dev;
4631 struct vio_dev *vdev = adapter->vdev;
4632 int rc, retrc = -ENOMEM;
4637 crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL);
4638 /* Should we allocate more than one page? */
4643 crq->size = PAGE_SIZE / sizeof(*crq->msgs);
4644 crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE,
4646 if (dma_mapping_error(dev, crq->msg_token))
4649 rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
4650 crq->msg_token, PAGE_SIZE);
4652 if (rc == H_RESOURCE)
4653 /* maybe kexecing and resource is busy. try a reset */
4654 rc = ibmvnic_reset_crq(adapter);
4657 if (rc == H_CLOSED) {
4658 dev_warn(dev, "Partner adapter not ready\n");
4660 dev_warn(dev, "Error %d opening adapter\n", rc);
4661 goto reg_crq_failed;
4666 tasklet_init(&adapter->tasklet, (void *)ibmvnic_tasklet,
4667 (unsigned long)adapter);
4669 netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq);
4670 rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME,
4673 dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n",
4675 goto req_irq_failed;
4678 rc = vio_enable_interrupts(vdev);
4680 dev_err(dev, "Error %d enabling interrupts\n", rc);
4681 goto req_irq_failed;
4685 spin_lock_init(&crq->lock);
4690 tasklet_kill(&adapter->tasklet);
4692 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
4693 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
4695 dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
4697 free_page((unsigned long)crq->msgs);
4702 static int ibmvnic_reset_init(struct ibmvnic_adapter *adapter)
4704 struct device *dev = &adapter->vdev->dev;
4705 unsigned long timeout = msecs_to_jiffies(30000);
4706 u64 old_num_rx_queues, old_num_tx_queues;
4709 adapter->from_passive_init = false;
4711 old_num_rx_queues = adapter->req_rx_queues;
4712 old_num_tx_queues = adapter->req_tx_queues;
4714 reinit_completion(&adapter->init_done);
4715 adapter->init_done_rc = 0;
4716 ibmvnic_send_crq_init(adapter);
4717 if (!wait_for_completion_timeout(&adapter->init_done, timeout)) {
4718 dev_err(dev, "Initialization sequence timed out\n");
4722 if (adapter->init_done_rc) {
4723 release_crq_queue(adapter);
4724 return adapter->init_done_rc;
4727 if (adapter->from_passive_init) {
4728 adapter->state = VNIC_OPEN;
4729 adapter->from_passive_init = false;
4733 if (adapter->resetting && !adapter->wait_for_reset &&
4734 adapter->reset_reason != VNIC_RESET_MOBILITY) {
4735 if (adapter->req_rx_queues != old_num_rx_queues ||
4736 adapter->req_tx_queues != old_num_tx_queues) {
4737 release_sub_crqs(adapter, 0);
4738 rc = init_sub_crqs(adapter);
4740 rc = reset_sub_crq_queues(adapter);
4743 rc = init_sub_crqs(adapter);
4747 dev_err(dev, "Initialization of sub crqs failed\n");
4748 release_crq_queue(adapter);
4752 rc = init_sub_crq_irqs(adapter);
4754 dev_err(dev, "Failed to initialize sub crq irqs\n");
4755 release_crq_queue(adapter);
4761 static int ibmvnic_init(struct ibmvnic_adapter *adapter)
4763 struct device *dev = &adapter->vdev->dev;
4764 unsigned long timeout = msecs_to_jiffies(30000);
4767 adapter->from_passive_init = false;
4769 adapter->init_done_rc = 0;
4770 ibmvnic_send_crq_init(adapter);
4771 if (!wait_for_completion_timeout(&adapter->init_done, timeout)) {
4772 dev_err(dev, "Initialization sequence timed out\n");
4776 if (adapter->init_done_rc) {
4777 release_crq_queue(adapter);
4778 return adapter->init_done_rc;
4781 if (adapter->from_passive_init) {
4782 adapter->state = VNIC_OPEN;
4783 adapter->from_passive_init = false;
4787 rc = init_sub_crqs(adapter);
4789 dev_err(dev, "Initialization of sub crqs failed\n");
4790 release_crq_queue(adapter);
4794 rc = init_sub_crq_irqs(adapter);
4796 dev_err(dev, "Failed to initialize sub crq irqs\n");
4797 release_crq_queue(adapter);
4803 static struct device_attribute dev_attr_failover;
4805 static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
4807 struct ibmvnic_adapter *adapter;
4808 struct net_device *netdev;
4809 unsigned char *mac_addr_p;
4812 dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n",
4815 mac_addr_p = (unsigned char *)vio_get_attribute(dev,
4816 VETH_MAC_ADDR, NULL);
4819 "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n",
4820 __FILE__, __LINE__);
4824 netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter),
4825 IBMVNIC_MAX_QUEUES);
4829 adapter = netdev_priv(netdev);
4830 adapter->state = VNIC_PROBING;
4831 dev_set_drvdata(&dev->dev, netdev);
4832 adapter->vdev = dev;
4833 adapter->netdev = netdev;
4835 ether_addr_copy(adapter->mac_addr, mac_addr_p);
4836 ether_addr_copy(netdev->dev_addr, adapter->mac_addr);
4837 netdev->irq = dev->irq;
4838 netdev->netdev_ops = &ibmvnic_netdev_ops;
4839 netdev->ethtool_ops = &ibmvnic_ethtool_ops;
4840 SET_NETDEV_DEV(netdev, &dev->dev);
4842 spin_lock_init(&adapter->stats_lock);
4844 INIT_WORK(&adapter->ibmvnic_reset, __ibmvnic_reset);
4845 INIT_LIST_HEAD(&adapter->rwi_list);
4846 spin_lock_init(&adapter->rwi_lock);
4847 init_completion(&adapter->init_done);
4848 adapter->resetting = false;
4850 adapter->mac_change_pending = false;
4853 rc = init_crq_queue(adapter);
4855 dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n",
4857 goto ibmvnic_init_fail;
4860 rc = ibmvnic_init(adapter);
4861 if (rc && rc != EAGAIN)
4862 goto ibmvnic_init_fail;
4863 } while (rc == EAGAIN);
4865 rc = init_stats_buffers(adapter);
4867 goto ibmvnic_init_fail;
4869 rc = init_stats_token(adapter);
4871 goto ibmvnic_stats_fail;
4873 netdev->mtu = adapter->req_mtu - ETH_HLEN;
4874 netdev->min_mtu = adapter->min_mtu - ETH_HLEN;
4875 netdev->max_mtu = adapter->max_mtu - ETH_HLEN;
4877 rc = device_create_file(&dev->dev, &dev_attr_failover);
4879 goto ibmvnic_dev_file_err;
4881 netif_carrier_off(netdev);
4882 rc = register_netdev(netdev);
4884 dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc);
4885 goto ibmvnic_register_fail;
4887 dev_info(&dev->dev, "ibmvnic registered\n");
4889 adapter->state = VNIC_PROBED;
4891 adapter->wait_for_reset = false;
4895 ibmvnic_register_fail:
4896 device_remove_file(&dev->dev, &dev_attr_failover);
4898 ibmvnic_dev_file_err:
4899 release_stats_token(adapter);
4902 release_stats_buffers(adapter);
4905 release_sub_crqs(adapter, 1);
4906 release_crq_queue(adapter);
4907 free_netdev(netdev);
4912 static int ibmvnic_remove(struct vio_dev *dev)
4914 struct net_device *netdev = dev_get_drvdata(&dev->dev);
4915 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
4917 adapter->state = VNIC_REMOVING;
4919 unregister_netdevice(netdev);
4921 release_resources(adapter);
4922 release_sub_crqs(adapter, 1);
4923 release_crq_queue(adapter);
4925 release_stats_token(adapter);
4926 release_stats_buffers(adapter);
4928 adapter->state = VNIC_REMOVED;
4931 device_remove_file(&dev->dev, &dev_attr_failover);
4932 free_netdev(netdev);
4933 dev_set_drvdata(&dev->dev, NULL);
4938 static ssize_t failover_store(struct device *dev, struct device_attribute *attr,
4939 const char *buf, size_t count)
4941 struct net_device *netdev = dev_get_drvdata(dev);
4942 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
4943 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
4944 __be64 session_token;
4947 if (!sysfs_streq(buf, "1"))
4950 rc = plpar_hcall(H_VIOCTL, retbuf, adapter->vdev->unit_address,
4951 H_GET_SESSION_TOKEN, 0, 0, 0);
4953 netdev_err(netdev, "Couldn't retrieve session token, rc %ld\n",
4958 session_token = (__be64)retbuf[0];
4959 netdev_dbg(netdev, "Initiating client failover, session id %llx\n",
4960 be64_to_cpu(session_token));
4961 rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
4962 H_SESSION_ERR_DETECTED, session_token, 0, 0);
4964 netdev_err(netdev, "Client initiated failover failed, rc %ld\n",
4972 static DEVICE_ATTR_WO(failover);
4974 static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev)
4976 struct net_device *netdev = dev_get_drvdata(&vdev->dev);
4977 struct ibmvnic_adapter *adapter;
4978 struct iommu_table *tbl;
4979 unsigned long ret = 0;
4982 tbl = get_iommu_table_base(&vdev->dev);
4984 /* netdev inits at probe time along with the structures we need below*/
4986 return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl);
4988 adapter = netdev_priv(netdev);
4990 ret += PAGE_SIZE; /* the crq message queue */
4991 ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl);
4993 for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++)
4994 ret += 4 * PAGE_SIZE; /* the scrq message queue */
4996 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
4998 ret += adapter->rx_pool[i].size *
4999 IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl);
5004 static int ibmvnic_resume(struct device *dev)
5006 struct net_device *netdev = dev_get_drvdata(dev);
5007 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
5009 if (adapter->state != VNIC_OPEN)
5012 tasklet_schedule(&adapter->tasklet);
5017 static const struct vio_device_id ibmvnic_device_table[] = {
5018 {"network", "IBM,vnic"},
5021 MODULE_DEVICE_TABLE(vio, ibmvnic_device_table);
5023 static const struct dev_pm_ops ibmvnic_pm_ops = {
5024 .resume = ibmvnic_resume
5027 static struct vio_driver ibmvnic_driver = {
5028 .id_table = ibmvnic_device_table,
5029 .probe = ibmvnic_probe,
5030 .remove = ibmvnic_remove,
5031 .get_desired_dma = ibmvnic_get_desired_dma,
5032 .name = ibmvnic_driver_name,
5033 .pm = &ibmvnic_pm_ops,
5036 /* module functions */
5037 static int __init ibmvnic_module_init(void)
5039 pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string,
5040 IBMVNIC_DRIVER_VERSION);
5042 return vio_register_driver(&ibmvnic_driver);
5045 static void __exit ibmvnic_module_exit(void)
5047 vio_unregister_driver(&ibmvnic_driver);
5050 module_init(ibmvnic_module_init);
5051 module_exit(ibmvnic_module_exit);