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 *, u8 *);
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 __ibmvnic_set_mac(netdev, adapter->mac_addr);
857 static void release_login_buffer(struct ibmvnic_adapter *adapter)
859 kfree(adapter->login_buf);
860 adapter->login_buf = NULL;
863 static void release_login_rsp_buffer(struct ibmvnic_adapter *adapter)
865 kfree(adapter->login_rsp_buf);
866 adapter->login_rsp_buf = NULL;
869 static void release_resources(struct ibmvnic_adapter *adapter)
871 release_vpd_data(adapter);
873 release_tx_pools(adapter);
874 release_rx_pools(adapter);
876 release_napi(adapter);
877 release_login_rsp_buffer(adapter);
880 static int set_link_state(struct ibmvnic_adapter *adapter, u8 link_state)
882 struct net_device *netdev = adapter->netdev;
883 unsigned long timeout = msecs_to_jiffies(30000);
884 union ibmvnic_crq crq;
888 netdev_dbg(netdev, "setting link state %d\n", link_state);
890 memset(&crq, 0, sizeof(crq));
891 crq.logical_link_state.first = IBMVNIC_CRQ_CMD;
892 crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
893 crq.logical_link_state.link_state = link_state;
898 reinit_completion(&adapter->init_done);
899 rc = ibmvnic_send_crq(adapter, &crq);
901 netdev_err(netdev, "Failed to set link state\n");
905 if (!wait_for_completion_timeout(&adapter->init_done,
907 netdev_err(netdev, "timeout setting link state\n");
911 if (adapter->init_done_rc == 1) {
912 /* Partuial success, delay and re-send */
915 } else if (adapter->init_done_rc) {
916 netdev_warn(netdev, "Unable to set link state, rc=%d\n",
917 adapter->init_done_rc);
918 return adapter->init_done_rc;
925 static int set_real_num_queues(struct net_device *netdev)
927 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
930 netdev_dbg(netdev, "Setting real tx/rx queues (%llx/%llx)\n",
931 adapter->req_tx_queues, adapter->req_rx_queues);
933 rc = netif_set_real_num_tx_queues(netdev, adapter->req_tx_queues);
935 netdev_err(netdev, "failed to set the number of tx queues\n");
939 rc = netif_set_real_num_rx_queues(netdev, adapter->req_rx_queues);
941 netdev_err(netdev, "failed to set the number of rx queues\n");
946 static int ibmvnic_get_vpd(struct ibmvnic_adapter *adapter)
948 struct device *dev = &adapter->vdev->dev;
949 union ibmvnic_crq crq;
953 if (adapter->vpd->buff)
954 len = adapter->vpd->len;
956 init_completion(&adapter->fw_done);
957 crq.get_vpd_size.first = IBMVNIC_CRQ_CMD;
958 crq.get_vpd_size.cmd = GET_VPD_SIZE;
959 rc = ibmvnic_send_crq(adapter, &crq);
962 wait_for_completion(&adapter->fw_done);
964 if (!adapter->vpd->len)
967 if (!adapter->vpd->buff)
968 adapter->vpd->buff = kzalloc(adapter->vpd->len, GFP_KERNEL);
969 else if (adapter->vpd->len != len)
971 krealloc(adapter->vpd->buff,
972 adapter->vpd->len, GFP_KERNEL);
974 if (!adapter->vpd->buff) {
975 dev_err(dev, "Could allocate VPD buffer\n");
979 adapter->vpd->dma_addr =
980 dma_map_single(dev, adapter->vpd->buff, adapter->vpd->len,
982 if (dma_mapping_error(dev, adapter->vpd->dma_addr)) {
983 dev_err(dev, "Could not map VPD buffer\n");
984 kfree(adapter->vpd->buff);
985 adapter->vpd->buff = NULL;
989 reinit_completion(&adapter->fw_done);
990 crq.get_vpd.first = IBMVNIC_CRQ_CMD;
991 crq.get_vpd.cmd = GET_VPD;
992 crq.get_vpd.ioba = cpu_to_be32(adapter->vpd->dma_addr);
993 crq.get_vpd.len = cpu_to_be32((u32)adapter->vpd->len);
994 rc = ibmvnic_send_crq(adapter, &crq);
996 kfree(adapter->vpd->buff);
997 adapter->vpd->buff = NULL;
1000 wait_for_completion(&adapter->fw_done);
1005 static int init_resources(struct ibmvnic_adapter *adapter)
1007 struct net_device *netdev = adapter->netdev;
1010 rc = set_real_num_queues(netdev);
1014 adapter->vpd = kzalloc(sizeof(*adapter->vpd), GFP_KERNEL);
1018 /* Vital Product Data (VPD) */
1019 rc = ibmvnic_get_vpd(adapter);
1021 netdev_err(netdev, "failed to initialize Vital Product Data (VPD)\n");
1025 adapter->map_id = 1;
1027 rc = init_napi(adapter);
1031 send_map_query(adapter);
1033 rc = init_rx_pools(netdev);
1037 rc = init_tx_pools(netdev);
1041 static int __ibmvnic_open(struct net_device *netdev)
1043 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1044 enum vnic_state prev_state = adapter->state;
1047 adapter->state = VNIC_OPENING;
1048 replenish_pools(adapter);
1049 ibmvnic_napi_enable(adapter);
1051 /* We're ready to receive frames, enable the sub-crq interrupts and
1052 * set the logical link state to up
1054 for (i = 0; i < adapter->req_rx_queues; i++) {
1055 netdev_dbg(netdev, "Enabling rx_scrq[%d] irq\n", i);
1056 if (prev_state == VNIC_CLOSED)
1057 enable_irq(adapter->rx_scrq[i]->irq);
1058 enable_scrq_irq(adapter, adapter->rx_scrq[i]);
1061 for (i = 0; i < adapter->req_tx_queues; i++) {
1062 netdev_dbg(netdev, "Enabling tx_scrq[%d] irq\n", i);
1063 if (prev_state == VNIC_CLOSED)
1064 enable_irq(adapter->tx_scrq[i]->irq);
1065 enable_scrq_irq(adapter, adapter->tx_scrq[i]);
1068 rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_UP);
1070 for (i = 0; i < adapter->req_rx_queues; i++)
1071 napi_disable(&adapter->napi[i]);
1072 release_resources(adapter);
1076 netif_tx_start_all_queues(netdev);
1078 if (prev_state == VNIC_CLOSED) {
1079 for (i = 0; i < adapter->req_rx_queues; i++)
1080 napi_schedule(&adapter->napi[i]);
1083 adapter->state = VNIC_OPEN;
1087 static int ibmvnic_open(struct net_device *netdev)
1089 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1092 /* If device failover is pending, just set device state and return.
1093 * Device operation will be handled by reset routine.
1095 if (adapter->failover_pending) {
1096 adapter->state = VNIC_OPEN;
1100 if (adapter->state != VNIC_CLOSED) {
1101 rc = ibmvnic_login(netdev);
1105 rc = init_resources(adapter);
1107 netdev_err(netdev, "failed to initialize resources\n");
1108 release_resources(adapter);
1113 rc = __ibmvnic_open(netdev);
1118 static void clean_rx_pools(struct ibmvnic_adapter *adapter)
1120 struct ibmvnic_rx_pool *rx_pool;
1121 struct ibmvnic_rx_buff *rx_buff;
1126 if (!adapter->rx_pool)
1129 rx_scrqs = adapter->num_active_rx_pools;
1130 rx_entries = adapter->req_rx_add_entries_per_subcrq;
1132 /* Free any remaining skbs in the rx buffer pools */
1133 for (i = 0; i < rx_scrqs; i++) {
1134 rx_pool = &adapter->rx_pool[i];
1135 if (!rx_pool || !rx_pool->rx_buff)
1138 netdev_dbg(adapter->netdev, "Cleaning rx_pool[%d]\n", i);
1139 for (j = 0; j < rx_entries; j++) {
1140 rx_buff = &rx_pool->rx_buff[j];
1141 if (rx_buff && rx_buff->skb) {
1142 dev_kfree_skb_any(rx_buff->skb);
1143 rx_buff->skb = NULL;
1149 static void clean_one_tx_pool(struct ibmvnic_adapter *adapter,
1150 struct ibmvnic_tx_pool *tx_pool)
1152 struct ibmvnic_tx_buff *tx_buff;
1156 if (!tx_pool || !tx_pool->tx_buff)
1159 tx_entries = tx_pool->num_buffers;
1161 for (i = 0; i < tx_entries; i++) {
1162 tx_buff = &tx_pool->tx_buff[i];
1163 if (tx_buff && tx_buff->skb) {
1164 dev_kfree_skb_any(tx_buff->skb);
1165 tx_buff->skb = NULL;
1170 static void clean_tx_pools(struct ibmvnic_adapter *adapter)
1175 if (!adapter->tx_pool || !adapter->tso_pool)
1178 tx_scrqs = adapter->num_active_tx_pools;
1180 /* Free any remaining skbs in the tx buffer pools */
1181 for (i = 0; i < tx_scrqs; i++) {
1182 netdev_dbg(adapter->netdev, "Cleaning tx_pool[%d]\n", i);
1183 clean_one_tx_pool(adapter, &adapter->tx_pool[i]);
1184 clean_one_tx_pool(adapter, &adapter->tso_pool[i]);
1188 static void ibmvnic_disable_irqs(struct ibmvnic_adapter *adapter)
1190 struct net_device *netdev = adapter->netdev;
1193 if (adapter->tx_scrq) {
1194 for (i = 0; i < adapter->req_tx_queues; i++)
1195 if (adapter->tx_scrq[i]->irq) {
1197 "Disabling tx_scrq[%d] irq\n", i);
1198 disable_scrq_irq(adapter, adapter->tx_scrq[i]);
1199 disable_irq(adapter->tx_scrq[i]->irq);
1203 if (adapter->rx_scrq) {
1204 for (i = 0; i < adapter->req_rx_queues; i++) {
1205 if (adapter->rx_scrq[i]->irq) {
1207 "Disabling rx_scrq[%d] irq\n", i);
1208 disable_scrq_irq(adapter, adapter->rx_scrq[i]);
1209 disable_irq(adapter->rx_scrq[i]->irq);
1215 static void ibmvnic_cleanup(struct net_device *netdev)
1217 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1219 /* ensure that transmissions are stopped if called by do_reset */
1220 if (adapter->resetting)
1221 netif_tx_disable(netdev);
1223 netif_tx_stop_all_queues(netdev);
1225 ibmvnic_napi_disable(adapter);
1226 ibmvnic_disable_irqs(adapter);
1228 clean_rx_pools(adapter);
1229 clean_tx_pools(adapter);
1232 static int __ibmvnic_close(struct net_device *netdev)
1234 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1237 adapter->state = VNIC_CLOSING;
1238 rc = set_link_state(adapter, IBMVNIC_LOGICAL_LNK_DN);
1241 adapter->state = VNIC_CLOSED;
1245 static int ibmvnic_close(struct net_device *netdev)
1247 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1250 /* If device failover is pending, just set device state and return.
1251 * Device operation will be handled by reset routine.
1253 if (adapter->failover_pending) {
1254 adapter->state = VNIC_CLOSED;
1258 rc = __ibmvnic_close(netdev);
1259 ibmvnic_cleanup(netdev);
1265 * build_hdr_data - creates L2/L3/L4 header data buffer
1266 * @hdr_field - bitfield determining needed headers
1267 * @skb - socket buffer
1268 * @hdr_len - array of header lengths
1269 * @tot_len - total length of data
1271 * Reads hdr_field to determine which headers are needed by firmware.
1272 * Builds a buffer containing these headers. Saves individual header
1273 * lengths and total buffer length to be used to build descriptors.
1275 static int build_hdr_data(u8 hdr_field, struct sk_buff *skb,
1276 int *hdr_len, u8 *hdr_data)
1281 if (skb_vlan_tagged(skb) && !skb_vlan_tag_present(skb))
1282 hdr_len[0] = sizeof(struct vlan_ethhdr);
1284 hdr_len[0] = sizeof(struct ethhdr);
1286 if (skb->protocol == htons(ETH_P_IP)) {
1287 hdr_len[1] = ip_hdr(skb)->ihl * 4;
1288 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
1289 hdr_len[2] = tcp_hdrlen(skb);
1290 else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
1291 hdr_len[2] = sizeof(struct udphdr);
1292 } else if (skb->protocol == htons(ETH_P_IPV6)) {
1293 hdr_len[1] = sizeof(struct ipv6hdr);
1294 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
1295 hdr_len[2] = tcp_hdrlen(skb);
1296 else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)
1297 hdr_len[2] = sizeof(struct udphdr);
1298 } else if (skb->protocol == htons(ETH_P_ARP)) {
1299 hdr_len[1] = arp_hdr_len(skb->dev);
1303 memset(hdr_data, 0, 120);
1304 if ((hdr_field >> 6) & 1) {
1305 hdr = skb_mac_header(skb);
1306 memcpy(hdr_data, hdr, hdr_len[0]);
1310 if ((hdr_field >> 5) & 1) {
1311 hdr = skb_network_header(skb);
1312 memcpy(hdr_data + len, hdr, hdr_len[1]);
1316 if ((hdr_field >> 4) & 1) {
1317 hdr = skb_transport_header(skb);
1318 memcpy(hdr_data + len, hdr, hdr_len[2]);
1325 * create_hdr_descs - create header and header extension descriptors
1326 * @hdr_field - bitfield determining needed headers
1327 * @data - buffer containing header data
1328 * @len - length of data buffer
1329 * @hdr_len - array of individual header lengths
1330 * @scrq_arr - descriptor array
1332 * Creates header and, if needed, header extension descriptors and
1333 * places them in a descriptor array, scrq_arr
1336 static int create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len,
1337 union sub_crq *scrq_arr)
1339 union sub_crq hdr_desc;
1345 while (tmp_len > 0) {
1346 cur = hdr_data + len - tmp_len;
1348 memset(&hdr_desc, 0, sizeof(hdr_desc));
1349 if (cur != hdr_data) {
1350 data = hdr_desc.hdr_ext.data;
1351 tmp = tmp_len > 29 ? 29 : tmp_len;
1352 hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD;
1353 hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC;
1354 hdr_desc.hdr_ext.len = tmp;
1356 data = hdr_desc.hdr.data;
1357 tmp = tmp_len > 24 ? 24 : tmp_len;
1358 hdr_desc.hdr.first = IBMVNIC_CRQ_CMD;
1359 hdr_desc.hdr.type = IBMVNIC_HDR_DESC;
1360 hdr_desc.hdr.len = tmp;
1361 hdr_desc.hdr.l2_len = (u8)hdr_len[0];
1362 hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]);
1363 hdr_desc.hdr.l4_len = (u8)hdr_len[2];
1364 hdr_desc.hdr.flag = hdr_field << 1;
1366 memcpy(data, cur, tmp);
1368 *scrq_arr = hdr_desc;
1377 * build_hdr_descs_arr - build a header descriptor array
1378 * @skb - socket buffer
1379 * @num_entries - number of descriptors to be sent
1380 * @subcrq - first TX descriptor
1381 * @hdr_field - bit field determining which headers will be sent
1383 * This function will build a TX descriptor array with applicable
1384 * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect.
1387 static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff,
1388 int *num_entries, u8 hdr_field)
1390 int hdr_len[3] = {0, 0, 0};
1392 u8 *hdr_data = txbuff->hdr_data;
1394 tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len,
1396 *num_entries += create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len,
1397 txbuff->indir_arr + 1);
1400 static int ibmvnic_xmit_workarounds(struct sk_buff *skb,
1401 struct net_device *netdev)
1403 /* For some backing devices, mishandling of small packets
1404 * can result in a loss of connection or TX stall. Device
1405 * architects recommend that no packet should be smaller
1406 * than the minimum MTU value provided to the driver, so
1407 * pad any packets to that length
1409 if (skb->len < netdev->min_mtu)
1410 return skb_put_padto(skb, netdev->min_mtu);
1415 static netdev_tx_t ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
1417 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1418 int queue_num = skb_get_queue_mapping(skb);
1419 u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req;
1420 struct device *dev = &adapter->vdev->dev;
1421 struct ibmvnic_tx_buff *tx_buff = NULL;
1422 struct ibmvnic_sub_crq_queue *tx_scrq;
1423 struct ibmvnic_tx_pool *tx_pool;
1424 unsigned int tx_send_failed = 0;
1425 unsigned int tx_map_failed = 0;
1426 unsigned int tx_dropped = 0;
1427 unsigned int tx_packets = 0;
1428 unsigned int tx_bytes = 0;
1429 dma_addr_t data_dma_addr;
1430 struct netdev_queue *txq;
1431 unsigned long lpar_rc;
1432 union sub_crq tx_crq;
1433 unsigned int offset;
1434 int num_entries = 1;
1439 netdev_tx_t ret = NETDEV_TX_OK;
1441 if (adapter->resetting) {
1442 if (!netif_subqueue_stopped(netdev, skb))
1443 netif_stop_subqueue(netdev, queue_num);
1444 dev_kfree_skb_any(skb);
1452 if (ibmvnic_xmit_workarounds(skb, netdev)) {
1458 if (skb_is_gso(skb))
1459 tx_pool = &adapter->tso_pool[queue_num];
1461 tx_pool = &adapter->tx_pool[queue_num];
1463 tx_scrq = adapter->tx_scrq[queue_num];
1464 txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb));
1465 handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
1466 be32_to_cpu(adapter->login_rsp_buf->off_txsubm_subcrqs));
1468 index = tx_pool->free_map[tx_pool->consumer_index];
1470 if (index == IBMVNIC_INVALID_MAP) {
1471 dev_kfree_skb_any(skb);
1478 tx_pool->free_map[tx_pool->consumer_index] = IBMVNIC_INVALID_MAP;
1480 offset = index * tx_pool->buf_size;
1481 dst = tx_pool->long_term_buff.buff + offset;
1482 memset(dst, 0, tx_pool->buf_size);
1483 data_dma_addr = tx_pool->long_term_buff.addr + offset;
1485 if (skb_shinfo(skb)->nr_frags) {
1489 skb_copy_from_linear_data(skb, dst, skb_headlen(skb));
1490 cur = skb_headlen(skb);
1492 /* Copy the frags */
1493 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1494 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
1497 page_address(skb_frag_page(frag)) +
1498 frag->page_offset, skb_frag_size(frag));
1499 cur += skb_frag_size(frag);
1502 skb_copy_from_linear_data(skb, dst, skb->len);
1505 tx_pool->consumer_index =
1506 (tx_pool->consumer_index + 1) % tx_pool->num_buffers;
1508 tx_buff = &tx_pool->tx_buff[index];
1510 tx_buff->data_dma[0] = data_dma_addr;
1511 tx_buff->data_len[0] = skb->len;
1512 tx_buff->index = index;
1513 tx_buff->pool_index = queue_num;
1514 tx_buff->last_frag = true;
1516 memset(&tx_crq, 0, sizeof(tx_crq));
1517 tx_crq.v1.first = IBMVNIC_CRQ_CMD;
1518 tx_crq.v1.type = IBMVNIC_TX_DESC;
1519 tx_crq.v1.n_crq_elem = 1;
1520 tx_crq.v1.n_sge = 1;
1521 tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED;
1523 if (skb_is_gso(skb))
1524 tx_crq.v1.correlator =
1525 cpu_to_be32(index | IBMVNIC_TSO_POOL_MASK);
1527 tx_crq.v1.correlator = cpu_to_be32(index);
1528 tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id);
1529 tx_crq.v1.sge_len = cpu_to_be32(skb->len);
1530 tx_crq.v1.ioba = cpu_to_be64(data_dma_addr);
1532 if (adapter->vlan_header_insertion && skb_vlan_tag_present(skb)) {
1533 tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT;
1534 tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci);
1537 if (skb->protocol == htons(ETH_P_IP)) {
1538 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4;
1539 proto = ip_hdr(skb)->protocol;
1540 } else if (skb->protocol == htons(ETH_P_IPV6)) {
1541 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6;
1542 proto = ipv6_hdr(skb)->nexthdr;
1545 if (proto == IPPROTO_TCP)
1546 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP;
1547 else if (proto == IPPROTO_UDP)
1548 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP;
1550 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1551 tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD;
1554 if (skb_is_gso(skb)) {
1555 tx_crq.v1.flags1 |= IBMVNIC_TX_LSO;
1556 tx_crq.v1.mss = cpu_to_be16(skb_shinfo(skb)->gso_size);
1559 /* determine if l2/3/4 headers are sent to firmware */
1560 if ((*hdrs >> 7) & 1) {
1561 build_hdr_descs_arr(tx_buff, &num_entries, *hdrs);
1562 tx_crq.v1.n_crq_elem = num_entries;
1563 tx_buff->num_entries = num_entries;
1564 tx_buff->indir_arr[0] = tx_crq;
1565 tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr,
1566 sizeof(tx_buff->indir_arr),
1568 if (dma_mapping_error(dev, tx_buff->indir_dma)) {
1569 dev_kfree_skb_any(skb);
1570 tx_buff->skb = NULL;
1571 if (!firmware_has_feature(FW_FEATURE_CMO))
1572 dev_err(dev, "tx: unable to map descriptor array\n");
1578 lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num],
1579 (u64)tx_buff->indir_dma,
1582 tx_buff->num_entries = num_entries;
1583 lpar_rc = send_subcrq(adapter, handle_array[queue_num],
1586 if (lpar_rc != H_SUCCESS) {
1587 if (lpar_rc != H_CLOSED && lpar_rc != H_PARAMETER)
1588 dev_err_ratelimited(dev, "tx: send failed\n");
1589 dev_kfree_skb_any(skb);
1590 tx_buff->skb = NULL;
1592 if (lpar_rc == H_CLOSED || adapter->failover_pending) {
1593 /* Disable TX and report carrier off if queue is closed
1594 * or pending failover.
1595 * Firmware guarantees that a signal will be sent to the
1596 * driver, triggering a reset or some other action.
1598 netif_tx_stop_all_queues(netdev);
1599 netif_carrier_off(netdev);
1608 if (atomic_add_return(num_entries, &tx_scrq->used)
1609 >= adapter->req_tx_entries_per_subcrq) {
1610 netdev_dbg(netdev, "Stopping queue %d\n", queue_num);
1611 netif_stop_subqueue(netdev, queue_num);
1615 tx_bytes += skb->len;
1616 txq->trans_start = jiffies;
1621 /* roll back consumer index and map array*/
1622 if (tx_pool->consumer_index == 0)
1623 tx_pool->consumer_index =
1624 tx_pool->num_buffers - 1;
1626 tx_pool->consumer_index--;
1627 tx_pool->free_map[tx_pool->consumer_index] = index;
1629 netdev->stats.tx_dropped += tx_dropped;
1630 netdev->stats.tx_bytes += tx_bytes;
1631 netdev->stats.tx_packets += tx_packets;
1632 adapter->tx_send_failed += tx_send_failed;
1633 adapter->tx_map_failed += tx_map_failed;
1634 adapter->tx_stats_buffers[queue_num].packets += tx_packets;
1635 adapter->tx_stats_buffers[queue_num].bytes += tx_bytes;
1636 adapter->tx_stats_buffers[queue_num].dropped_packets += tx_dropped;
1641 static void ibmvnic_set_multi(struct net_device *netdev)
1643 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1644 struct netdev_hw_addr *ha;
1645 union ibmvnic_crq crq;
1647 memset(&crq, 0, sizeof(crq));
1648 crq.request_capability.first = IBMVNIC_CRQ_CMD;
1649 crq.request_capability.cmd = REQUEST_CAPABILITY;
1651 if (netdev->flags & IFF_PROMISC) {
1652 if (!adapter->promisc_supported)
1655 if (netdev->flags & IFF_ALLMULTI) {
1656 /* Accept all multicast */
1657 memset(&crq, 0, sizeof(crq));
1658 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
1659 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
1660 crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL;
1661 ibmvnic_send_crq(adapter, &crq);
1662 } else if (netdev_mc_empty(netdev)) {
1663 /* Reject all multicast */
1664 memset(&crq, 0, sizeof(crq));
1665 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
1666 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
1667 crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL;
1668 ibmvnic_send_crq(adapter, &crq);
1670 /* Accept one or more multicast(s) */
1671 netdev_for_each_mc_addr(ha, netdev) {
1672 memset(&crq, 0, sizeof(crq));
1673 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
1674 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
1675 crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC;
1676 ether_addr_copy(&crq.multicast_ctrl.mac_addr[0],
1678 ibmvnic_send_crq(adapter, &crq);
1684 static int __ibmvnic_set_mac(struct net_device *netdev, u8 *dev_addr)
1686 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1687 union ibmvnic_crq crq;
1690 if (!is_valid_ether_addr(dev_addr)) {
1691 rc = -EADDRNOTAVAIL;
1695 memset(&crq, 0, sizeof(crq));
1696 crq.change_mac_addr.first = IBMVNIC_CRQ_CMD;
1697 crq.change_mac_addr.cmd = CHANGE_MAC_ADDR;
1698 ether_addr_copy(&crq.change_mac_addr.mac_addr[0], dev_addr);
1700 init_completion(&adapter->fw_done);
1701 rc = ibmvnic_send_crq(adapter, &crq);
1707 wait_for_completion(&adapter->fw_done);
1708 /* netdev->dev_addr is changed in handle_change_mac_rsp function */
1709 if (adapter->fw_done_rc) {
1716 ether_addr_copy(adapter->mac_addr, netdev->dev_addr);
1720 static int ibmvnic_set_mac(struct net_device *netdev, void *p)
1722 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1723 struct sockaddr *addr = p;
1727 ether_addr_copy(adapter->mac_addr, addr->sa_data);
1728 if (adapter->state != VNIC_PROBED)
1729 rc = __ibmvnic_set_mac(netdev, addr->sa_data);
1735 * do_reset returns zero if we are able to keep processing reset events, or
1736 * non-zero if we hit a fatal error and must halt.
1738 static int do_reset(struct ibmvnic_adapter *adapter,
1739 struct ibmvnic_rwi *rwi, u32 reset_state)
1741 u64 old_num_rx_queues, old_num_tx_queues;
1742 u64 old_num_rx_slots, old_num_tx_slots;
1743 struct net_device *netdev = adapter->netdev;
1746 netdev_dbg(adapter->netdev, "Re-setting driver (%d)\n",
1749 netif_carrier_off(netdev);
1750 adapter->reset_reason = rwi->reset_reason;
1752 old_num_rx_queues = adapter->req_rx_queues;
1753 old_num_tx_queues = adapter->req_tx_queues;
1754 old_num_rx_slots = adapter->req_rx_add_entries_per_subcrq;
1755 old_num_tx_slots = adapter->req_tx_entries_per_subcrq;
1757 ibmvnic_cleanup(netdev);
1759 if (adapter->reset_reason != VNIC_RESET_MOBILITY &&
1760 adapter->reset_reason != VNIC_RESET_FAILOVER) {
1761 rc = __ibmvnic_close(netdev);
1766 if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM ||
1767 adapter->wait_for_reset) {
1768 release_resources(adapter);
1769 release_sub_crqs(adapter, 1);
1770 release_crq_queue(adapter);
1773 if (adapter->reset_reason != VNIC_RESET_NON_FATAL) {
1774 /* remove the closed state so when we call open it appears
1775 * we are coming from the probed state.
1777 adapter->state = VNIC_PROBED;
1779 if (adapter->wait_for_reset) {
1780 rc = init_crq_queue(adapter);
1781 } else if (adapter->reset_reason == VNIC_RESET_MOBILITY) {
1782 rc = ibmvnic_reenable_crq_queue(adapter);
1783 release_sub_crqs(adapter, 1);
1785 rc = ibmvnic_reset_crq(adapter);
1787 rc = vio_enable_interrupts(adapter->vdev);
1791 netdev_err(adapter->netdev,
1792 "Couldn't initialize crq. rc=%d\n", rc);
1796 rc = ibmvnic_reset_init(adapter);
1798 return IBMVNIC_INIT_FAILED;
1800 /* If the adapter was in PROBE state prior to the reset,
1803 if (reset_state == VNIC_PROBED)
1806 rc = ibmvnic_login(netdev);
1808 adapter->state = reset_state;
1812 if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM ||
1813 adapter->wait_for_reset) {
1814 rc = init_resources(adapter);
1817 } else if (adapter->req_rx_queues != old_num_rx_queues ||
1818 adapter->req_tx_queues != old_num_tx_queues ||
1819 adapter->req_rx_add_entries_per_subcrq !=
1821 adapter->req_tx_entries_per_subcrq !=
1823 release_rx_pools(adapter);
1824 release_tx_pools(adapter);
1825 release_napi(adapter);
1826 release_vpd_data(adapter);
1828 rc = init_resources(adapter);
1833 rc = reset_tx_pools(adapter);
1837 rc = reset_rx_pools(adapter);
1841 ibmvnic_disable_irqs(adapter);
1843 adapter->state = VNIC_CLOSED;
1845 if (reset_state == VNIC_CLOSED)
1848 rc = __ibmvnic_open(netdev);
1850 if (list_empty(&adapter->rwi_list))
1851 adapter->state = VNIC_CLOSED;
1853 adapter->state = reset_state;
1859 for (i = 0; i < adapter->req_rx_queues; i++)
1860 napi_schedule(&adapter->napi[i]);
1862 if (adapter->reset_reason != VNIC_RESET_FAILOVER &&
1863 adapter->reset_reason != VNIC_RESET_CHANGE_PARAM)
1864 call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, netdev);
1869 static int do_hard_reset(struct ibmvnic_adapter *adapter,
1870 struct ibmvnic_rwi *rwi, u32 reset_state)
1872 struct net_device *netdev = adapter->netdev;
1875 netdev_dbg(adapter->netdev, "Hard resetting driver (%d)\n",
1878 netif_carrier_off(netdev);
1879 adapter->reset_reason = rwi->reset_reason;
1881 ibmvnic_cleanup(netdev);
1882 release_resources(adapter);
1883 release_sub_crqs(adapter, 0);
1884 release_crq_queue(adapter);
1886 /* remove the closed state so when we call open it appears
1887 * we are coming from the probed state.
1889 adapter->state = VNIC_PROBED;
1891 reinit_completion(&adapter->init_done);
1892 rc = init_crq_queue(adapter);
1894 netdev_err(adapter->netdev,
1895 "Couldn't initialize crq. rc=%d\n", rc);
1899 rc = ibmvnic_init(adapter);
1903 /* If the adapter was in PROBE state prior to the reset,
1906 if (reset_state == VNIC_PROBED)
1909 rc = ibmvnic_login(netdev);
1911 adapter->state = VNIC_PROBED;
1915 rc = init_resources(adapter);
1919 ibmvnic_disable_irqs(adapter);
1920 adapter->state = VNIC_CLOSED;
1922 if (reset_state == VNIC_CLOSED)
1925 rc = __ibmvnic_open(netdev);
1927 if (list_empty(&adapter->rwi_list))
1928 adapter->state = VNIC_CLOSED;
1930 adapter->state = reset_state;
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 snprintf(scrq->name, sizeof(scrq->name), "ibmvnic-%x-tx%d",
2923 adapter->vdev->unit_address, i);
2924 rc = request_irq(scrq->irq, ibmvnic_interrupt_tx,
2925 0, scrq->name, scrq);
2928 dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n",
2930 irq_dispose_mapping(scrq->irq);
2931 goto req_tx_irq_failed;
2935 for (i = 0; i < adapter->req_rx_queues; i++) {
2936 netdev_dbg(adapter->netdev, "Initializing rx_scrq[%d] irq\n",
2938 scrq = adapter->rx_scrq[i];
2939 scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
2942 dev_err(dev, "Error mapping irq\n");
2943 goto req_rx_irq_failed;
2945 snprintf(scrq->name, sizeof(scrq->name), "ibmvnic-%x-rx%d",
2946 adapter->vdev->unit_address, i);
2947 rc = request_irq(scrq->irq, ibmvnic_interrupt_rx,
2948 0, scrq->name, scrq);
2950 dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n",
2952 irq_dispose_mapping(scrq->irq);
2953 goto req_rx_irq_failed;
2959 for (j = 0; j < i; j++) {
2960 free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]);
2961 irq_dispose_mapping(adapter->rx_scrq[j]->irq);
2963 i = adapter->req_tx_queues;
2965 for (j = 0; j < i; j++) {
2966 free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]);
2967 irq_dispose_mapping(adapter->rx_scrq[j]->irq);
2969 release_sub_crqs(adapter, 1);
2973 static int init_sub_crqs(struct ibmvnic_adapter *adapter)
2975 struct device *dev = &adapter->vdev->dev;
2976 struct ibmvnic_sub_crq_queue **allqueues;
2977 int registered_queues = 0;
2982 total_queues = adapter->req_tx_queues + adapter->req_rx_queues;
2984 allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_KERNEL);
2988 for (i = 0; i < total_queues; i++) {
2989 allqueues[i] = init_sub_crq_queue(adapter);
2990 if (!allqueues[i]) {
2991 dev_warn(dev, "Couldn't allocate all sub-crqs\n");
2994 registered_queues++;
2997 /* Make sure we were able to register the minimum number of queues */
2998 if (registered_queues <
2999 adapter->min_tx_queues + adapter->min_rx_queues) {
3000 dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n");
3004 /* Distribute the failed allocated queues*/
3005 for (i = 0; i < total_queues - registered_queues + more ; i++) {
3006 netdev_dbg(adapter->netdev, "Reducing number of queues\n");
3009 if (adapter->req_rx_queues > adapter->min_rx_queues)
3010 adapter->req_rx_queues--;
3015 if (adapter->req_tx_queues > adapter->min_tx_queues)
3016 adapter->req_tx_queues--;
3023 adapter->tx_scrq = kcalloc(adapter->req_tx_queues,
3024 sizeof(*adapter->tx_scrq), GFP_KERNEL);
3025 if (!adapter->tx_scrq)
3028 for (i = 0; i < adapter->req_tx_queues; i++) {
3029 adapter->tx_scrq[i] = allqueues[i];
3030 adapter->tx_scrq[i]->pool_index = i;
3031 adapter->num_active_tx_scrqs++;
3034 adapter->rx_scrq = kcalloc(adapter->req_rx_queues,
3035 sizeof(*adapter->rx_scrq), GFP_KERNEL);
3036 if (!adapter->rx_scrq)
3039 for (i = 0; i < adapter->req_rx_queues; i++) {
3040 adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues];
3041 adapter->rx_scrq[i]->scrq_num = i;
3042 adapter->num_active_rx_scrqs++;
3049 kfree(adapter->tx_scrq);
3050 adapter->tx_scrq = NULL;
3052 for (i = 0; i < registered_queues; i++)
3053 release_sub_crq_queue(adapter, allqueues[i], 1);
3058 static void ibmvnic_send_req_caps(struct ibmvnic_adapter *adapter, int retry)
3060 struct device *dev = &adapter->vdev->dev;
3061 union ibmvnic_crq crq;
3065 /* Sub-CRQ entries are 32 byte long */
3066 int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4);
3068 if (adapter->min_tx_entries_per_subcrq > entries_page ||
3069 adapter->min_rx_add_entries_per_subcrq > entries_page) {
3070 dev_err(dev, "Fatal, invalid entries per sub-crq\n");
3074 if (adapter->desired.mtu)
3075 adapter->req_mtu = adapter->desired.mtu;
3077 adapter->req_mtu = adapter->netdev->mtu + ETH_HLEN;
3079 if (!adapter->desired.tx_entries)
3080 adapter->desired.tx_entries =
3081 adapter->max_tx_entries_per_subcrq;
3082 if (!adapter->desired.rx_entries)
3083 adapter->desired.rx_entries =
3084 adapter->max_rx_add_entries_per_subcrq;
3086 max_entries = IBMVNIC_MAX_LTB_SIZE /
3087 (adapter->req_mtu + IBMVNIC_BUFFER_HLEN);
3089 if ((adapter->req_mtu + IBMVNIC_BUFFER_HLEN) *
3090 adapter->desired.tx_entries > IBMVNIC_MAX_LTB_SIZE) {
3091 adapter->desired.tx_entries = max_entries;
3094 if ((adapter->req_mtu + IBMVNIC_BUFFER_HLEN) *
3095 adapter->desired.rx_entries > IBMVNIC_MAX_LTB_SIZE) {
3096 adapter->desired.rx_entries = max_entries;
3099 if (adapter->desired.tx_entries)
3100 adapter->req_tx_entries_per_subcrq =
3101 adapter->desired.tx_entries;
3103 adapter->req_tx_entries_per_subcrq =
3104 adapter->max_tx_entries_per_subcrq;
3106 if (adapter->desired.rx_entries)
3107 adapter->req_rx_add_entries_per_subcrq =
3108 adapter->desired.rx_entries;
3110 adapter->req_rx_add_entries_per_subcrq =
3111 adapter->max_rx_add_entries_per_subcrq;
3113 if (adapter->desired.tx_queues)
3114 adapter->req_tx_queues =
3115 adapter->desired.tx_queues;
3117 adapter->req_tx_queues =
3118 adapter->opt_tx_comp_sub_queues;
3120 if (adapter->desired.rx_queues)
3121 adapter->req_rx_queues =
3122 adapter->desired.rx_queues;
3124 adapter->req_rx_queues =
3125 adapter->opt_rx_comp_queues;
3127 adapter->req_rx_add_queues = adapter->max_rx_add_queues;
3130 memset(&crq, 0, sizeof(crq));
3131 crq.request_capability.first = IBMVNIC_CRQ_CMD;
3132 crq.request_capability.cmd = REQUEST_CAPABILITY;
3134 crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES);
3135 crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues);
3136 atomic_inc(&adapter->running_cap_crqs);
3137 ibmvnic_send_crq(adapter, &crq);
3139 crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES);
3140 crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues);
3141 atomic_inc(&adapter->running_cap_crqs);
3142 ibmvnic_send_crq(adapter, &crq);
3144 crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES);
3145 crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues);
3146 atomic_inc(&adapter->running_cap_crqs);
3147 ibmvnic_send_crq(adapter, &crq);
3149 crq.request_capability.capability =
3150 cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ);
3151 crq.request_capability.number =
3152 cpu_to_be64(adapter->req_tx_entries_per_subcrq);
3153 atomic_inc(&adapter->running_cap_crqs);
3154 ibmvnic_send_crq(adapter, &crq);
3156 crq.request_capability.capability =
3157 cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ);
3158 crq.request_capability.number =
3159 cpu_to_be64(adapter->req_rx_add_entries_per_subcrq);
3160 atomic_inc(&adapter->running_cap_crqs);
3161 ibmvnic_send_crq(adapter, &crq);
3163 crq.request_capability.capability = cpu_to_be16(REQ_MTU);
3164 crq.request_capability.number = cpu_to_be64(adapter->req_mtu);
3165 atomic_inc(&adapter->running_cap_crqs);
3166 ibmvnic_send_crq(adapter, &crq);
3168 if (adapter->netdev->flags & IFF_PROMISC) {
3169 if (adapter->promisc_supported) {
3170 crq.request_capability.capability =
3171 cpu_to_be16(PROMISC_REQUESTED);
3172 crq.request_capability.number = cpu_to_be64(1);
3173 atomic_inc(&adapter->running_cap_crqs);
3174 ibmvnic_send_crq(adapter, &crq);
3177 crq.request_capability.capability =
3178 cpu_to_be16(PROMISC_REQUESTED);
3179 crq.request_capability.number = cpu_to_be64(0);
3180 atomic_inc(&adapter->running_cap_crqs);
3181 ibmvnic_send_crq(adapter, &crq);
3185 static int pending_scrq(struct ibmvnic_adapter *adapter,
3186 struct ibmvnic_sub_crq_queue *scrq)
3188 union sub_crq *entry = &scrq->msgs[scrq->cur];
3190 if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP)
3196 static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter,
3197 struct ibmvnic_sub_crq_queue *scrq)
3199 union sub_crq *entry;
3200 unsigned long flags;
3202 spin_lock_irqsave(&scrq->lock, flags);
3203 entry = &scrq->msgs[scrq->cur];
3204 if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) {
3205 if (++scrq->cur == scrq->size)
3210 spin_unlock_irqrestore(&scrq->lock, flags);
3215 static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter)
3217 struct ibmvnic_crq_queue *queue = &adapter->crq;
3218 union ibmvnic_crq *crq;
3220 crq = &queue->msgs[queue->cur];
3221 if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) {
3222 if (++queue->cur == queue->size)
3231 static void print_subcrq_error(struct device *dev, int rc, const char *func)
3235 dev_warn_ratelimited(dev,
3236 "%s failed: Send request is malformed or adapter failover pending. (rc=%d)\n",
3240 dev_warn_ratelimited(dev,
3241 "%s failed: Backing queue closed. Adapter is down or failover pending. (rc=%d)\n",
3245 dev_err_ratelimited(dev, "%s failed: (rc=%d)\n", func, rc);
3250 static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle,
3251 union sub_crq *sub_crq)
3253 unsigned int ua = adapter->vdev->unit_address;
3254 struct device *dev = &adapter->vdev->dev;
3255 u64 *u64_crq = (u64 *)sub_crq;
3258 netdev_dbg(adapter->netdev,
3259 "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n",
3260 (unsigned long int)cpu_to_be64(remote_handle),
3261 (unsigned long int)cpu_to_be64(u64_crq[0]),
3262 (unsigned long int)cpu_to_be64(u64_crq[1]),
3263 (unsigned long int)cpu_to_be64(u64_crq[2]),
3264 (unsigned long int)cpu_to_be64(u64_crq[3]));
3266 /* Make sure the hypervisor sees the complete request */
3269 rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua,
3270 cpu_to_be64(remote_handle),
3271 cpu_to_be64(u64_crq[0]),
3272 cpu_to_be64(u64_crq[1]),
3273 cpu_to_be64(u64_crq[2]),
3274 cpu_to_be64(u64_crq[3]));
3277 print_subcrq_error(dev, rc, __func__);
3282 static int send_subcrq_indirect(struct ibmvnic_adapter *adapter,
3283 u64 remote_handle, u64 ioba, u64 num_entries)
3285 unsigned int ua = adapter->vdev->unit_address;
3286 struct device *dev = &adapter->vdev->dev;
3289 /* Make sure the hypervisor sees the complete request */
3291 rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua,
3292 cpu_to_be64(remote_handle),
3296 print_subcrq_error(dev, rc, __func__);
3301 static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter,
3302 union ibmvnic_crq *crq)
3304 unsigned int ua = adapter->vdev->unit_address;
3305 struct device *dev = &adapter->vdev->dev;
3306 u64 *u64_crq = (u64 *)crq;
3309 netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n",
3310 (unsigned long int)cpu_to_be64(u64_crq[0]),
3311 (unsigned long int)cpu_to_be64(u64_crq[1]));
3313 if (!adapter->crq.active &&
3314 crq->generic.first != IBMVNIC_CRQ_INIT_CMD) {
3315 dev_warn(dev, "Invalid request detected while CRQ is inactive, possible device state change during reset\n");
3319 /* Make sure the hypervisor sees the complete request */
3322 rc = plpar_hcall_norets(H_SEND_CRQ, ua,
3323 cpu_to_be64(u64_crq[0]),
3324 cpu_to_be64(u64_crq[1]));
3327 if (rc == H_CLOSED) {
3328 dev_warn(dev, "CRQ Queue closed\n");
3329 if (adapter->resetting)
3330 ibmvnic_reset(adapter, VNIC_RESET_FATAL);
3333 dev_warn(dev, "Send error (rc=%d)\n", rc);
3339 static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter)
3341 union ibmvnic_crq crq;
3343 memset(&crq, 0, sizeof(crq));
3344 crq.generic.first = IBMVNIC_CRQ_INIT_CMD;
3345 crq.generic.cmd = IBMVNIC_CRQ_INIT;
3346 netdev_dbg(adapter->netdev, "Sending CRQ init\n");
3348 return ibmvnic_send_crq(adapter, &crq);
3351 static int send_version_xchg(struct ibmvnic_adapter *adapter)
3353 union ibmvnic_crq crq;
3355 memset(&crq, 0, sizeof(crq));
3356 crq.version_exchange.first = IBMVNIC_CRQ_CMD;
3357 crq.version_exchange.cmd = VERSION_EXCHANGE;
3358 crq.version_exchange.version = cpu_to_be16(ibmvnic_version);
3360 return ibmvnic_send_crq(adapter, &crq);
3363 struct vnic_login_client_data {
3369 static int vnic_client_data_len(struct ibmvnic_adapter *adapter)
3373 /* Calculate the amount of buffer space needed for the
3374 * vnic client data in the login buffer. There are four entries,
3375 * OS name, LPAR name, device name, and a null last entry.
3377 len = 4 * sizeof(struct vnic_login_client_data);
3378 len += 6; /* "Linux" plus NULL */
3379 len += strlen(utsname()->nodename) + 1;
3380 len += strlen(adapter->netdev->name) + 1;
3385 static void vnic_add_client_data(struct ibmvnic_adapter *adapter,
3386 struct vnic_login_client_data *vlcd)
3388 const char *os_name = "Linux";
3391 /* Type 1 - LPAR OS */
3393 len = strlen(os_name) + 1;
3394 vlcd->len = cpu_to_be16(len);
3395 strncpy(vlcd->name, os_name, len);
3396 vlcd = (struct vnic_login_client_data *)(vlcd->name + len);
3398 /* Type 2 - LPAR name */
3400 len = strlen(utsname()->nodename) + 1;
3401 vlcd->len = cpu_to_be16(len);
3402 strncpy(vlcd->name, utsname()->nodename, len);
3403 vlcd = (struct vnic_login_client_data *)(vlcd->name + len);
3405 /* Type 3 - device name */
3407 len = strlen(adapter->netdev->name) + 1;
3408 vlcd->len = cpu_to_be16(len);
3409 strncpy(vlcd->name, adapter->netdev->name, len);
3412 static int send_login(struct ibmvnic_adapter *adapter)
3414 struct ibmvnic_login_rsp_buffer *login_rsp_buffer;
3415 struct ibmvnic_login_buffer *login_buffer;
3416 struct device *dev = &adapter->vdev->dev;
3417 dma_addr_t rsp_buffer_token;
3418 dma_addr_t buffer_token;
3419 size_t rsp_buffer_size;
3420 union ibmvnic_crq crq;
3424 int client_data_len;
3425 struct vnic_login_client_data *vlcd;
3428 if (!adapter->tx_scrq || !adapter->rx_scrq) {
3429 netdev_err(adapter->netdev,
3430 "RX or TX queues are not allocated, device login failed\n");
3434 release_login_rsp_buffer(adapter);
3435 client_data_len = vnic_client_data_len(adapter);
3438 sizeof(struct ibmvnic_login_buffer) +
3439 sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues) +
3442 login_buffer = kzalloc(buffer_size, GFP_ATOMIC);
3444 goto buf_alloc_failed;
3446 buffer_token = dma_map_single(dev, login_buffer, buffer_size,
3448 if (dma_mapping_error(dev, buffer_token)) {
3449 dev_err(dev, "Couldn't map login buffer\n");
3450 goto buf_map_failed;
3453 rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) +
3454 sizeof(u64) * adapter->req_tx_queues +
3455 sizeof(u64) * adapter->req_rx_queues +
3456 sizeof(u64) * adapter->req_rx_queues +
3457 sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS;
3459 login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC);
3460 if (!login_rsp_buffer)
3461 goto buf_rsp_alloc_failed;
3463 rsp_buffer_token = dma_map_single(dev, login_rsp_buffer,
3464 rsp_buffer_size, DMA_FROM_DEVICE);
3465 if (dma_mapping_error(dev, rsp_buffer_token)) {
3466 dev_err(dev, "Couldn't map login rsp buffer\n");
3467 goto buf_rsp_map_failed;
3470 adapter->login_buf = login_buffer;
3471 adapter->login_buf_token = buffer_token;
3472 adapter->login_buf_sz = buffer_size;
3473 adapter->login_rsp_buf = login_rsp_buffer;
3474 adapter->login_rsp_buf_token = rsp_buffer_token;
3475 adapter->login_rsp_buf_sz = rsp_buffer_size;
3477 login_buffer->len = cpu_to_be32(buffer_size);
3478 login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB);
3479 login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues);
3480 login_buffer->off_txcomp_subcrqs =
3481 cpu_to_be32(sizeof(struct ibmvnic_login_buffer));
3482 login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues);
3483 login_buffer->off_rxcomp_subcrqs =
3484 cpu_to_be32(sizeof(struct ibmvnic_login_buffer) +
3485 sizeof(u64) * adapter->req_tx_queues);
3486 login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token);
3487 login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size);
3489 tx_list_p = (__be64 *)((char *)login_buffer +
3490 sizeof(struct ibmvnic_login_buffer));
3491 rx_list_p = (__be64 *)((char *)login_buffer +
3492 sizeof(struct ibmvnic_login_buffer) +
3493 sizeof(u64) * adapter->req_tx_queues);
3495 for (i = 0; i < adapter->req_tx_queues; i++) {
3496 if (adapter->tx_scrq[i]) {
3497 tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]->
3502 for (i = 0; i < adapter->req_rx_queues; i++) {
3503 if (adapter->rx_scrq[i]) {
3504 rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]->
3509 /* Insert vNIC login client data */
3510 vlcd = (struct vnic_login_client_data *)
3511 ((char *)rx_list_p + (sizeof(u64) * adapter->req_rx_queues));
3512 login_buffer->client_data_offset =
3513 cpu_to_be32((char *)vlcd - (char *)login_buffer);
3514 login_buffer->client_data_len = cpu_to_be32(client_data_len);
3516 vnic_add_client_data(adapter, vlcd);
3518 netdev_dbg(adapter->netdev, "Login Buffer:\n");
3519 for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) {
3520 netdev_dbg(adapter->netdev, "%016lx\n",
3521 ((unsigned long int *)(adapter->login_buf))[i]);
3524 memset(&crq, 0, sizeof(crq));
3525 crq.login.first = IBMVNIC_CRQ_CMD;
3526 crq.login.cmd = LOGIN;
3527 crq.login.ioba = cpu_to_be32(buffer_token);
3528 crq.login.len = cpu_to_be32(buffer_size);
3529 ibmvnic_send_crq(adapter, &crq);
3534 kfree(login_rsp_buffer);
3535 buf_rsp_alloc_failed:
3536 dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE);
3538 kfree(login_buffer);
3543 static int send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr,
3546 union ibmvnic_crq crq;
3548 memset(&crq, 0, sizeof(crq));
3549 crq.request_map.first = IBMVNIC_CRQ_CMD;
3550 crq.request_map.cmd = REQUEST_MAP;
3551 crq.request_map.map_id = map_id;
3552 crq.request_map.ioba = cpu_to_be32(addr);
3553 crq.request_map.len = cpu_to_be32(len);
3554 return ibmvnic_send_crq(adapter, &crq);
3557 static int send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id)
3559 union ibmvnic_crq crq;
3561 memset(&crq, 0, sizeof(crq));
3562 crq.request_unmap.first = IBMVNIC_CRQ_CMD;
3563 crq.request_unmap.cmd = REQUEST_UNMAP;
3564 crq.request_unmap.map_id = map_id;
3565 return ibmvnic_send_crq(adapter, &crq);
3568 static void send_map_query(struct ibmvnic_adapter *adapter)
3570 union ibmvnic_crq crq;
3572 memset(&crq, 0, sizeof(crq));
3573 crq.query_map.first = IBMVNIC_CRQ_CMD;
3574 crq.query_map.cmd = QUERY_MAP;
3575 ibmvnic_send_crq(adapter, &crq);
3578 /* Send a series of CRQs requesting various capabilities of the VNIC server */
3579 static void send_cap_queries(struct ibmvnic_adapter *adapter)
3581 union ibmvnic_crq crq;
3583 atomic_set(&adapter->running_cap_crqs, 0);
3584 memset(&crq, 0, sizeof(crq));
3585 crq.query_capability.first = IBMVNIC_CRQ_CMD;
3586 crq.query_capability.cmd = QUERY_CAPABILITY;
3588 crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES);
3589 atomic_inc(&adapter->running_cap_crqs);
3590 ibmvnic_send_crq(adapter, &crq);
3592 crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES);
3593 atomic_inc(&adapter->running_cap_crqs);
3594 ibmvnic_send_crq(adapter, &crq);
3596 crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES);
3597 atomic_inc(&adapter->running_cap_crqs);
3598 ibmvnic_send_crq(adapter, &crq);
3600 crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES);
3601 atomic_inc(&adapter->running_cap_crqs);
3602 ibmvnic_send_crq(adapter, &crq);
3604 crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES);
3605 atomic_inc(&adapter->running_cap_crqs);
3606 ibmvnic_send_crq(adapter, &crq);
3608 crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES);
3609 atomic_inc(&adapter->running_cap_crqs);
3610 ibmvnic_send_crq(adapter, &crq);
3612 crq.query_capability.capability =
3613 cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ);
3614 atomic_inc(&adapter->running_cap_crqs);
3615 ibmvnic_send_crq(adapter, &crq);
3617 crq.query_capability.capability =
3618 cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ);
3619 atomic_inc(&adapter->running_cap_crqs);
3620 ibmvnic_send_crq(adapter, &crq);
3622 crq.query_capability.capability =
3623 cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ);
3624 atomic_inc(&adapter->running_cap_crqs);
3625 ibmvnic_send_crq(adapter, &crq);
3627 crq.query_capability.capability =
3628 cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ);
3629 atomic_inc(&adapter->running_cap_crqs);
3630 ibmvnic_send_crq(adapter, &crq);
3632 crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD);
3633 atomic_inc(&adapter->running_cap_crqs);
3634 ibmvnic_send_crq(adapter, &crq);
3636 crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED);
3637 atomic_inc(&adapter->running_cap_crqs);
3638 ibmvnic_send_crq(adapter, &crq);
3640 crq.query_capability.capability = cpu_to_be16(MIN_MTU);
3641 atomic_inc(&adapter->running_cap_crqs);
3642 ibmvnic_send_crq(adapter, &crq);
3644 crq.query_capability.capability = cpu_to_be16(MAX_MTU);
3645 atomic_inc(&adapter->running_cap_crqs);
3646 ibmvnic_send_crq(adapter, &crq);
3648 crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS);
3649 atomic_inc(&adapter->running_cap_crqs);
3650 ibmvnic_send_crq(adapter, &crq);
3652 crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION);
3653 atomic_inc(&adapter->running_cap_crqs);
3654 ibmvnic_send_crq(adapter, &crq);
3656 crq.query_capability.capability = cpu_to_be16(RX_VLAN_HEADER_INSERTION);
3657 atomic_inc(&adapter->running_cap_crqs);
3658 ibmvnic_send_crq(adapter, &crq);
3660 crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES);
3661 atomic_inc(&adapter->running_cap_crqs);
3662 ibmvnic_send_crq(adapter, &crq);
3664 crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED);
3665 atomic_inc(&adapter->running_cap_crqs);
3666 ibmvnic_send_crq(adapter, &crq);
3668 crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES);
3669 atomic_inc(&adapter->running_cap_crqs);
3670 ibmvnic_send_crq(adapter, &crq);
3672 crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES);
3673 atomic_inc(&adapter->running_cap_crqs);
3674 ibmvnic_send_crq(adapter, &crq);
3676 crq.query_capability.capability =
3677 cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q);
3678 atomic_inc(&adapter->running_cap_crqs);
3679 ibmvnic_send_crq(adapter, &crq);
3681 crq.query_capability.capability =
3682 cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ);
3683 atomic_inc(&adapter->running_cap_crqs);
3684 ibmvnic_send_crq(adapter, &crq);
3686 crq.query_capability.capability =
3687 cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ);
3688 atomic_inc(&adapter->running_cap_crqs);
3689 ibmvnic_send_crq(adapter, &crq);
3691 crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ);
3692 atomic_inc(&adapter->running_cap_crqs);
3693 ibmvnic_send_crq(adapter, &crq);
3696 static void handle_vpd_size_rsp(union ibmvnic_crq *crq,
3697 struct ibmvnic_adapter *adapter)
3699 struct device *dev = &adapter->vdev->dev;
3701 if (crq->get_vpd_size_rsp.rc.code) {
3702 dev_err(dev, "Error retrieving VPD size, rc=%x\n",
3703 crq->get_vpd_size_rsp.rc.code);
3704 complete(&adapter->fw_done);
3708 adapter->vpd->len = be64_to_cpu(crq->get_vpd_size_rsp.len);
3709 complete(&adapter->fw_done);
3712 static void handle_vpd_rsp(union ibmvnic_crq *crq,
3713 struct ibmvnic_adapter *adapter)
3715 struct device *dev = &adapter->vdev->dev;
3716 unsigned char *substr = NULL;
3717 u8 fw_level_len = 0;
3719 memset(adapter->fw_version, 0, 32);
3721 dma_unmap_single(dev, adapter->vpd->dma_addr, adapter->vpd->len,
3724 if (crq->get_vpd_rsp.rc.code) {
3725 dev_err(dev, "Error retrieving VPD from device, rc=%x\n",
3726 crq->get_vpd_rsp.rc.code);
3730 /* get the position of the firmware version info
3731 * located after the ASCII 'RM' substring in the buffer
3733 substr = strnstr(adapter->vpd->buff, "RM", adapter->vpd->len);
3735 dev_info(dev, "Warning - No FW level has been provided in the VPD buffer by the VIOS Server\n");
3739 /* get length of firmware level ASCII substring */
3740 if ((substr + 2) < (adapter->vpd->buff + adapter->vpd->len)) {
3741 fw_level_len = *(substr + 2);
3743 dev_info(dev, "Length of FW substr extrapolated VDP buff\n");
3747 /* copy firmware version string from vpd into adapter */
3748 if ((substr + 3 + fw_level_len) <
3749 (adapter->vpd->buff + adapter->vpd->len)) {
3750 strncpy((char *)adapter->fw_version, substr + 3, fw_level_len);
3752 dev_info(dev, "FW substr extrapolated VPD buff\n");
3756 if (adapter->fw_version[0] == '\0')
3757 strncpy((char *)adapter->fw_version, "N/A", 3 * sizeof(char));
3758 complete(&adapter->fw_done);
3761 static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter)
3763 struct device *dev = &adapter->vdev->dev;
3764 struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf;
3765 netdev_features_t old_hw_features = 0;
3766 union ibmvnic_crq crq;
3769 dma_unmap_single(dev, adapter->ip_offload_tok,
3770 sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE);
3772 netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n");
3773 for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++)
3774 netdev_dbg(adapter->netdev, "%016lx\n",
3775 ((unsigned long int *)(buf))[i]);
3777 netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum);
3778 netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum);
3779 netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n",
3780 buf->tcp_ipv4_chksum);
3781 netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n",
3782 buf->tcp_ipv6_chksum);
3783 netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n",
3784 buf->udp_ipv4_chksum);
3785 netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n",
3786 buf->udp_ipv6_chksum);
3787 netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n",
3788 buf->large_tx_ipv4);
3789 netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n",
3790 buf->large_tx_ipv6);
3791 netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n",
3792 buf->large_rx_ipv4);
3793 netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n",
3794 buf->large_rx_ipv6);
3795 netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n",
3796 buf->max_ipv4_header_size);
3797 netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n",
3798 buf->max_ipv6_header_size);
3799 netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n",
3800 buf->max_tcp_header_size);
3801 netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n",
3802 buf->max_udp_header_size);
3803 netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n",
3804 buf->max_large_tx_size);
3805 netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n",
3806 buf->max_large_rx_size);
3807 netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n",
3808 buf->ipv6_extension_header);
3809 netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n",
3810 buf->tcp_pseudosum_req);
3811 netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n",
3812 buf->num_ipv6_ext_headers);
3813 netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n",
3814 buf->off_ipv6_ext_headers);
3816 adapter->ip_offload_ctrl_tok =
3817 dma_map_single(dev, &adapter->ip_offload_ctrl,
3818 sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE);
3820 if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) {
3821 dev_err(dev, "Couldn't map ip offload control buffer\n");
3825 adapter->ip_offload_ctrl.len =
3826 cpu_to_be32(sizeof(adapter->ip_offload_ctrl));
3827 adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB);
3828 adapter->ip_offload_ctrl.ipv4_chksum = buf->ipv4_chksum;
3829 adapter->ip_offload_ctrl.ipv6_chksum = buf->ipv6_chksum;
3830 adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum;
3831 adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum;
3832 adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum;
3833 adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum;
3834 adapter->ip_offload_ctrl.large_tx_ipv4 = buf->large_tx_ipv4;
3835 adapter->ip_offload_ctrl.large_tx_ipv6 = buf->large_tx_ipv6;
3837 /* large_rx disabled for now, additional features needed */
3838 adapter->ip_offload_ctrl.large_rx_ipv4 = 0;
3839 adapter->ip_offload_ctrl.large_rx_ipv6 = 0;
3841 if (adapter->state != VNIC_PROBING) {
3842 old_hw_features = adapter->netdev->hw_features;
3843 adapter->netdev->hw_features = 0;
3846 adapter->netdev->hw_features = NETIF_F_SG | NETIF_F_GSO | NETIF_F_GRO;
3848 if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum)
3849 adapter->netdev->hw_features |= NETIF_F_IP_CSUM;
3851 if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum)
3852 adapter->netdev->hw_features |= NETIF_F_IPV6_CSUM;
3854 if ((adapter->netdev->features &
3855 (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)))
3856 adapter->netdev->hw_features |= NETIF_F_RXCSUM;
3858 if (buf->large_tx_ipv4)
3859 adapter->netdev->hw_features |= NETIF_F_TSO;
3860 if (buf->large_tx_ipv6)
3861 adapter->netdev->hw_features |= NETIF_F_TSO6;
3863 if (adapter->state == VNIC_PROBING) {
3864 adapter->netdev->features |= adapter->netdev->hw_features;
3865 } else if (old_hw_features != adapter->netdev->hw_features) {
3866 netdev_features_t tmp = 0;
3868 /* disable features no longer supported */
3869 adapter->netdev->features &= adapter->netdev->hw_features;
3870 /* turn on features now supported if previously enabled */
3871 tmp = (old_hw_features ^ adapter->netdev->hw_features) &
3872 adapter->netdev->hw_features;
3873 adapter->netdev->features |=
3874 tmp & adapter->netdev->wanted_features;
3877 memset(&crq, 0, sizeof(crq));
3878 crq.control_ip_offload.first = IBMVNIC_CRQ_CMD;
3879 crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD;
3880 crq.control_ip_offload.len =
3881 cpu_to_be32(sizeof(adapter->ip_offload_ctrl));
3882 crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok);
3883 ibmvnic_send_crq(adapter, &crq);
3886 static const char *ibmvnic_fw_err_cause(u16 cause)
3889 case ADAPTER_PROBLEM:
3890 return "adapter problem";
3892 return "bus problem";
3894 return "firmware problem";
3896 return "device driver problem";
3898 return "EEH recovery";
3900 return "firmware updated";
3902 return "low Memory";
3908 static void handle_error_indication(union ibmvnic_crq *crq,
3909 struct ibmvnic_adapter *adapter)
3911 struct device *dev = &adapter->vdev->dev;
3914 cause = be16_to_cpu(crq->error_indication.error_cause);
3916 dev_warn_ratelimited(dev,
3917 "Firmware reports %serror, cause: %s. Starting recovery...\n",
3918 crq->error_indication.flags
3919 & IBMVNIC_FATAL_ERROR ? "FATAL " : "",
3920 ibmvnic_fw_err_cause(cause));
3922 if (crq->error_indication.flags & IBMVNIC_FATAL_ERROR)
3923 ibmvnic_reset(adapter, VNIC_RESET_FATAL);
3925 ibmvnic_reset(adapter, VNIC_RESET_NON_FATAL);
3928 static int handle_change_mac_rsp(union ibmvnic_crq *crq,
3929 struct ibmvnic_adapter *adapter)
3931 struct net_device *netdev = adapter->netdev;
3932 struct device *dev = &adapter->vdev->dev;
3935 rc = crq->change_mac_addr_rsp.rc.code;
3937 dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc);
3940 ether_addr_copy(netdev->dev_addr,
3941 &crq->change_mac_addr_rsp.mac_addr[0]);
3943 complete(&adapter->fw_done);
3947 static void handle_request_cap_rsp(union ibmvnic_crq *crq,
3948 struct ibmvnic_adapter *adapter)
3950 struct device *dev = &adapter->vdev->dev;
3954 atomic_dec(&adapter->running_cap_crqs);
3955 switch (be16_to_cpu(crq->request_capability_rsp.capability)) {
3957 req_value = &adapter->req_tx_queues;
3961 req_value = &adapter->req_rx_queues;
3964 case REQ_RX_ADD_QUEUES:
3965 req_value = &adapter->req_rx_add_queues;
3968 case REQ_TX_ENTRIES_PER_SUBCRQ:
3969 req_value = &adapter->req_tx_entries_per_subcrq;
3970 name = "tx_entries_per_subcrq";
3972 case REQ_RX_ADD_ENTRIES_PER_SUBCRQ:
3973 req_value = &adapter->req_rx_add_entries_per_subcrq;
3974 name = "rx_add_entries_per_subcrq";
3977 req_value = &adapter->req_mtu;
3980 case PROMISC_REQUESTED:
3981 req_value = &adapter->promisc;
3985 dev_err(dev, "Got invalid cap request rsp %d\n",
3986 crq->request_capability.capability);
3990 switch (crq->request_capability_rsp.rc.code) {
3993 case PARTIALSUCCESS:
3994 dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n",
3996 (long int)be64_to_cpu(crq->request_capability_rsp.
3999 if (be16_to_cpu(crq->request_capability_rsp.capability) ==
4001 pr_err("mtu of %llu is not supported. Reverting.\n",
4003 *req_value = adapter->fallback.mtu;
4006 be64_to_cpu(crq->request_capability_rsp.number);
4009 ibmvnic_send_req_caps(adapter, 1);
4012 dev_err(dev, "Error %d in request cap rsp\n",
4013 crq->request_capability_rsp.rc.code);
4017 /* Done receiving requested capabilities, query IP offload support */
4018 if (atomic_read(&adapter->running_cap_crqs) == 0) {
4019 union ibmvnic_crq newcrq;
4020 int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer);
4021 struct ibmvnic_query_ip_offload_buffer *ip_offload_buf =
4022 &adapter->ip_offload_buf;
4024 adapter->wait_capability = false;
4025 adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf,
4029 if (dma_mapping_error(dev, adapter->ip_offload_tok)) {
4030 if (!firmware_has_feature(FW_FEATURE_CMO))
4031 dev_err(dev, "Couldn't map offload buffer\n");
4035 memset(&newcrq, 0, sizeof(newcrq));
4036 newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD;
4037 newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD;
4038 newcrq.query_ip_offload.len = cpu_to_be32(buf_sz);
4039 newcrq.query_ip_offload.ioba =
4040 cpu_to_be32(adapter->ip_offload_tok);
4042 ibmvnic_send_crq(adapter, &newcrq);
4046 static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq,
4047 struct ibmvnic_adapter *adapter)
4049 struct device *dev = &adapter->vdev->dev;
4050 struct net_device *netdev = adapter->netdev;
4051 struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf;
4052 struct ibmvnic_login_buffer *login = adapter->login_buf;
4055 dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz,
4057 dma_unmap_single(dev, adapter->login_rsp_buf_token,
4058 adapter->login_rsp_buf_sz, DMA_FROM_DEVICE);
4060 /* If the number of queues requested can't be allocated by the
4061 * server, the login response will return with code 1. We will need
4062 * to resend the login buffer with fewer queues requested.
4064 if (login_rsp_crq->generic.rc.code) {
4065 adapter->init_done_rc = login_rsp_crq->generic.rc.code;
4066 complete(&adapter->init_done);
4070 netdev->mtu = adapter->req_mtu - ETH_HLEN;
4072 netdev_dbg(adapter->netdev, "Login Response Buffer:\n");
4073 for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) {
4074 netdev_dbg(adapter->netdev, "%016lx\n",
4075 ((unsigned long int *)(adapter->login_rsp_buf))[i]);
4079 if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs ||
4080 (be32_to_cpu(login->num_rxcomp_subcrqs) *
4081 adapter->req_rx_add_queues !=
4082 be32_to_cpu(login_rsp->num_rxadd_subcrqs))) {
4083 dev_err(dev, "FATAL: Inconsistent login and login rsp\n");
4084 ibmvnic_remove(adapter->vdev);
4087 release_login_buffer(adapter);
4088 complete(&adapter->init_done);
4093 static void handle_request_unmap_rsp(union ibmvnic_crq *crq,
4094 struct ibmvnic_adapter *adapter)
4096 struct device *dev = &adapter->vdev->dev;
4099 rc = crq->request_unmap_rsp.rc.code;
4101 dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc);
4104 static void handle_query_map_rsp(union ibmvnic_crq *crq,
4105 struct ibmvnic_adapter *adapter)
4107 struct net_device *netdev = adapter->netdev;
4108 struct device *dev = &adapter->vdev->dev;
4111 rc = crq->query_map_rsp.rc.code;
4113 dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc);
4116 netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n",
4117 crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages,
4118 crq->query_map_rsp.free_pages);
4121 static void handle_query_cap_rsp(union ibmvnic_crq *crq,
4122 struct ibmvnic_adapter *adapter)
4124 struct net_device *netdev = adapter->netdev;
4125 struct device *dev = &adapter->vdev->dev;
4128 atomic_dec(&adapter->running_cap_crqs);
4129 netdev_dbg(netdev, "Outstanding queries: %d\n",
4130 atomic_read(&adapter->running_cap_crqs));
4131 rc = crq->query_capability.rc.code;
4133 dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc);
4137 switch (be16_to_cpu(crq->query_capability.capability)) {
4139 adapter->min_tx_queues =
4140 be64_to_cpu(crq->query_capability.number);
4141 netdev_dbg(netdev, "min_tx_queues = %lld\n",
4142 adapter->min_tx_queues);
4145 adapter->min_rx_queues =
4146 be64_to_cpu(crq->query_capability.number);
4147 netdev_dbg(netdev, "min_rx_queues = %lld\n",
4148 adapter->min_rx_queues);
4150 case MIN_RX_ADD_QUEUES:
4151 adapter->min_rx_add_queues =
4152 be64_to_cpu(crq->query_capability.number);
4153 netdev_dbg(netdev, "min_rx_add_queues = %lld\n",
4154 adapter->min_rx_add_queues);
4157 adapter->max_tx_queues =
4158 be64_to_cpu(crq->query_capability.number);
4159 netdev_dbg(netdev, "max_tx_queues = %lld\n",
4160 adapter->max_tx_queues);
4163 adapter->max_rx_queues =
4164 be64_to_cpu(crq->query_capability.number);
4165 netdev_dbg(netdev, "max_rx_queues = %lld\n",
4166 adapter->max_rx_queues);
4168 case MAX_RX_ADD_QUEUES:
4169 adapter->max_rx_add_queues =
4170 be64_to_cpu(crq->query_capability.number);
4171 netdev_dbg(netdev, "max_rx_add_queues = %lld\n",
4172 adapter->max_rx_add_queues);
4174 case MIN_TX_ENTRIES_PER_SUBCRQ:
4175 adapter->min_tx_entries_per_subcrq =
4176 be64_to_cpu(crq->query_capability.number);
4177 netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n",
4178 adapter->min_tx_entries_per_subcrq);
4180 case MIN_RX_ADD_ENTRIES_PER_SUBCRQ:
4181 adapter->min_rx_add_entries_per_subcrq =
4182 be64_to_cpu(crq->query_capability.number);
4183 netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n",
4184 adapter->min_rx_add_entries_per_subcrq);
4186 case MAX_TX_ENTRIES_PER_SUBCRQ:
4187 adapter->max_tx_entries_per_subcrq =
4188 be64_to_cpu(crq->query_capability.number);
4189 netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n",
4190 adapter->max_tx_entries_per_subcrq);
4192 case MAX_RX_ADD_ENTRIES_PER_SUBCRQ:
4193 adapter->max_rx_add_entries_per_subcrq =
4194 be64_to_cpu(crq->query_capability.number);
4195 netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n",
4196 adapter->max_rx_add_entries_per_subcrq);
4198 case TCP_IP_OFFLOAD:
4199 adapter->tcp_ip_offload =
4200 be64_to_cpu(crq->query_capability.number);
4201 netdev_dbg(netdev, "tcp_ip_offload = %lld\n",
4202 adapter->tcp_ip_offload);
4204 case PROMISC_SUPPORTED:
4205 adapter->promisc_supported =
4206 be64_to_cpu(crq->query_capability.number);
4207 netdev_dbg(netdev, "promisc_supported = %lld\n",
4208 adapter->promisc_supported);
4211 adapter->min_mtu = be64_to_cpu(crq->query_capability.number);
4212 netdev->min_mtu = adapter->min_mtu - ETH_HLEN;
4213 netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu);
4216 adapter->max_mtu = be64_to_cpu(crq->query_capability.number);
4217 netdev->max_mtu = adapter->max_mtu - ETH_HLEN;
4218 netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu);
4220 case MAX_MULTICAST_FILTERS:
4221 adapter->max_multicast_filters =
4222 be64_to_cpu(crq->query_capability.number);
4223 netdev_dbg(netdev, "max_multicast_filters = %lld\n",
4224 adapter->max_multicast_filters);
4226 case VLAN_HEADER_INSERTION:
4227 adapter->vlan_header_insertion =
4228 be64_to_cpu(crq->query_capability.number);
4229 if (adapter->vlan_header_insertion)
4230 netdev->features |= NETIF_F_HW_VLAN_STAG_TX;
4231 netdev_dbg(netdev, "vlan_header_insertion = %lld\n",
4232 adapter->vlan_header_insertion);
4234 case RX_VLAN_HEADER_INSERTION:
4235 adapter->rx_vlan_header_insertion =
4236 be64_to_cpu(crq->query_capability.number);
4237 netdev_dbg(netdev, "rx_vlan_header_insertion = %lld\n",
4238 adapter->rx_vlan_header_insertion);
4240 case MAX_TX_SG_ENTRIES:
4241 adapter->max_tx_sg_entries =
4242 be64_to_cpu(crq->query_capability.number);
4243 netdev_dbg(netdev, "max_tx_sg_entries = %lld\n",
4244 adapter->max_tx_sg_entries);
4246 case RX_SG_SUPPORTED:
4247 adapter->rx_sg_supported =
4248 be64_to_cpu(crq->query_capability.number);
4249 netdev_dbg(netdev, "rx_sg_supported = %lld\n",
4250 adapter->rx_sg_supported);
4252 case OPT_TX_COMP_SUB_QUEUES:
4253 adapter->opt_tx_comp_sub_queues =
4254 be64_to_cpu(crq->query_capability.number);
4255 netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n",
4256 adapter->opt_tx_comp_sub_queues);
4258 case OPT_RX_COMP_QUEUES:
4259 adapter->opt_rx_comp_queues =
4260 be64_to_cpu(crq->query_capability.number);
4261 netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n",
4262 adapter->opt_rx_comp_queues);
4264 case OPT_RX_BUFADD_Q_PER_RX_COMP_Q:
4265 adapter->opt_rx_bufadd_q_per_rx_comp_q =
4266 be64_to_cpu(crq->query_capability.number);
4267 netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n",
4268 adapter->opt_rx_bufadd_q_per_rx_comp_q);
4270 case OPT_TX_ENTRIES_PER_SUBCRQ:
4271 adapter->opt_tx_entries_per_subcrq =
4272 be64_to_cpu(crq->query_capability.number);
4273 netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n",
4274 adapter->opt_tx_entries_per_subcrq);
4276 case OPT_RXBA_ENTRIES_PER_SUBCRQ:
4277 adapter->opt_rxba_entries_per_subcrq =
4278 be64_to_cpu(crq->query_capability.number);
4279 netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n",
4280 adapter->opt_rxba_entries_per_subcrq);
4282 case TX_RX_DESC_REQ:
4283 adapter->tx_rx_desc_req = crq->query_capability.number;
4284 netdev_dbg(netdev, "tx_rx_desc_req = %llx\n",
4285 adapter->tx_rx_desc_req);
4289 netdev_err(netdev, "Got invalid cap rsp %d\n",
4290 crq->query_capability.capability);
4294 if (atomic_read(&adapter->running_cap_crqs) == 0) {
4295 adapter->wait_capability = false;
4296 ibmvnic_send_req_caps(adapter, 0);
4300 static int send_query_phys_parms(struct ibmvnic_adapter *adapter)
4302 union ibmvnic_crq crq;
4305 memset(&crq, 0, sizeof(crq));
4306 crq.query_phys_parms.first = IBMVNIC_CRQ_CMD;
4307 crq.query_phys_parms.cmd = QUERY_PHYS_PARMS;
4308 init_completion(&adapter->fw_done);
4309 rc = ibmvnic_send_crq(adapter, &crq);
4312 wait_for_completion(&adapter->fw_done);
4313 return adapter->fw_done_rc ? -EIO : 0;
4316 static int handle_query_phys_parms_rsp(union ibmvnic_crq *crq,
4317 struct ibmvnic_adapter *adapter)
4319 struct net_device *netdev = adapter->netdev;
4322 rc = crq->query_phys_parms_rsp.rc.code;
4324 netdev_err(netdev, "Error %d in QUERY_PHYS_PARMS\n", rc);
4327 switch (cpu_to_be32(crq->query_phys_parms_rsp.speed)) {
4328 case IBMVNIC_10MBPS:
4329 adapter->speed = SPEED_10;
4331 case IBMVNIC_100MBPS:
4332 adapter->speed = SPEED_100;
4335 adapter->speed = SPEED_1000;
4338 adapter->speed = SPEED_10000;
4340 case IBMVNIC_25GBPS:
4341 adapter->speed = SPEED_25000;
4343 case IBMVNIC_40GBPS:
4344 adapter->speed = SPEED_40000;
4346 case IBMVNIC_50GBPS:
4347 adapter->speed = SPEED_50000;
4349 case IBMVNIC_100GBPS:
4350 adapter->speed = SPEED_100000;
4353 netdev_warn(netdev, "Unknown speed 0x%08x\n",
4354 cpu_to_be32(crq->query_phys_parms_rsp.speed));
4355 adapter->speed = SPEED_UNKNOWN;
4357 if (crq->query_phys_parms_rsp.flags1 & IBMVNIC_FULL_DUPLEX)
4358 adapter->duplex = DUPLEX_FULL;
4359 else if (crq->query_phys_parms_rsp.flags1 & IBMVNIC_HALF_DUPLEX)
4360 adapter->duplex = DUPLEX_HALF;
4362 adapter->duplex = DUPLEX_UNKNOWN;
4367 static void ibmvnic_handle_crq(union ibmvnic_crq *crq,
4368 struct ibmvnic_adapter *adapter)
4370 struct ibmvnic_generic_crq *gen_crq = &crq->generic;
4371 struct net_device *netdev = adapter->netdev;
4372 struct device *dev = &adapter->vdev->dev;
4373 u64 *u64_crq = (u64 *)crq;
4376 netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n",
4377 (unsigned long int)cpu_to_be64(u64_crq[0]),
4378 (unsigned long int)cpu_to_be64(u64_crq[1]));
4379 switch (gen_crq->first) {
4380 case IBMVNIC_CRQ_INIT_RSP:
4381 switch (gen_crq->cmd) {
4382 case IBMVNIC_CRQ_INIT:
4383 dev_info(dev, "Partner initialized\n");
4384 adapter->from_passive_init = true;
4385 adapter->failover_pending = false;
4386 if (!completion_done(&adapter->init_done)) {
4387 complete(&adapter->init_done);
4388 adapter->init_done_rc = -EIO;
4390 ibmvnic_reset(adapter, VNIC_RESET_FAILOVER);
4392 case IBMVNIC_CRQ_INIT_COMPLETE:
4393 dev_info(dev, "Partner initialization complete\n");
4394 adapter->crq.active = true;
4395 send_version_xchg(adapter);
4398 dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd);
4401 case IBMVNIC_CRQ_XPORT_EVENT:
4402 netif_carrier_off(netdev);
4403 adapter->crq.active = false;
4404 if (adapter->resetting)
4405 adapter->force_reset_recovery = true;
4406 if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) {
4407 dev_info(dev, "Migrated, re-enabling adapter\n");
4408 ibmvnic_reset(adapter, VNIC_RESET_MOBILITY);
4409 } else if (gen_crq->cmd == IBMVNIC_DEVICE_FAILOVER) {
4410 dev_info(dev, "Backing device failover detected\n");
4411 adapter->failover_pending = true;
4413 /* The adapter lost the connection */
4414 dev_err(dev, "Virtual Adapter failed (rc=%d)\n",
4416 ibmvnic_reset(adapter, VNIC_RESET_FATAL);
4419 case IBMVNIC_CRQ_CMD_RSP:
4422 dev_err(dev, "Got an invalid msg type 0x%02x\n",
4427 switch (gen_crq->cmd) {
4428 case VERSION_EXCHANGE_RSP:
4429 rc = crq->version_exchange_rsp.rc.code;
4431 dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc);
4434 dev_info(dev, "Partner protocol version is %d\n",
4435 crq->version_exchange_rsp.version);
4436 if (be16_to_cpu(crq->version_exchange_rsp.version) <
4439 be16_to_cpu(crq->version_exchange_rsp.version);
4440 send_cap_queries(adapter);
4442 case QUERY_CAPABILITY_RSP:
4443 handle_query_cap_rsp(crq, adapter);
4446 handle_query_map_rsp(crq, adapter);
4448 case REQUEST_MAP_RSP:
4449 adapter->fw_done_rc = crq->request_map_rsp.rc.code;
4450 complete(&adapter->fw_done);
4452 case REQUEST_UNMAP_RSP:
4453 handle_request_unmap_rsp(crq, adapter);
4455 case REQUEST_CAPABILITY_RSP:
4456 handle_request_cap_rsp(crq, adapter);
4459 netdev_dbg(netdev, "Got Login Response\n");
4460 handle_login_rsp(crq, adapter);
4462 case LOGICAL_LINK_STATE_RSP:
4464 "Got Logical Link State Response, state: %d rc: %d\n",
4465 crq->logical_link_state_rsp.link_state,
4466 crq->logical_link_state_rsp.rc.code);
4467 adapter->logical_link_state =
4468 crq->logical_link_state_rsp.link_state;
4469 adapter->init_done_rc = crq->logical_link_state_rsp.rc.code;
4470 complete(&adapter->init_done);
4472 case LINK_STATE_INDICATION:
4473 netdev_dbg(netdev, "Got Logical Link State Indication\n");
4474 adapter->phys_link_state =
4475 crq->link_state_indication.phys_link_state;
4476 adapter->logical_link_state =
4477 crq->link_state_indication.logical_link_state;
4478 if (adapter->phys_link_state && adapter->logical_link_state)
4479 netif_carrier_on(netdev);
4481 netif_carrier_off(netdev);
4483 case CHANGE_MAC_ADDR_RSP:
4484 netdev_dbg(netdev, "Got MAC address change Response\n");
4485 adapter->fw_done_rc = handle_change_mac_rsp(crq, adapter);
4487 case ERROR_INDICATION:
4488 netdev_dbg(netdev, "Got Error Indication\n");
4489 handle_error_indication(crq, adapter);
4491 case REQUEST_STATISTICS_RSP:
4492 netdev_dbg(netdev, "Got Statistics Response\n");
4493 complete(&adapter->stats_done);
4495 case QUERY_IP_OFFLOAD_RSP:
4496 netdev_dbg(netdev, "Got Query IP offload Response\n");
4497 handle_query_ip_offload_rsp(adapter);
4499 case MULTICAST_CTRL_RSP:
4500 netdev_dbg(netdev, "Got multicast control Response\n");
4502 case CONTROL_IP_OFFLOAD_RSP:
4503 netdev_dbg(netdev, "Got Control IP offload Response\n");
4504 dma_unmap_single(dev, adapter->ip_offload_ctrl_tok,
4505 sizeof(adapter->ip_offload_ctrl),
4507 complete(&adapter->init_done);
4509 case COLLECT_FW_TRACE_RSP:
4510 netdev_dbg(netdev, "Got Collect firmware trace Response\n");
4511 complete(&adapter->fw_done);
4513 case GET_VPD_SIZE_RSP:
4514 handle_vpd_size_rsp(crq, adapter);
4517 handle_vpd_rsp(crq, adapter);
4519 case QUERY_PHYS_PARMS_RSP:
4520 adapter->fw_done_rc = handle_query_phys_parms_rsp(crq, adapter);
4521 complete(&adapter->fw_done);
4524 netdev_err(netdev, "Got an invalid cmd type 0x%02x\n",
4529 static irqreturn_t ibmvnic_interrupt(int irq, void *instance)
4531 struct ibmvnic_adapter *adapter = instance;
4533 tasklet_schedule(&adapter->tasklet);
4537 static void ibmvnic_tasklet(void *data)
4539 struct ibmvnic_adapter *adapter = data;
4540 struct ibmvnic_crq_queue *queue = &adapter->crq;
4541 union ibmvnic_crq *crq;
4542 unsigned long flags;
4545 spin_lock_irqsave(&queue->lock, flags);
4547 /* Pull all the valid messages off the CRQ */
4548 while ((crq = ibmvnic_next_crq(adapter)) != NULL) {
4549 ibmvnic_handle_crq(crq, adapter);
4550 crq->generic.first = 0;
4553 /* remain in tasklet until all
4554 * capabilities responses are received
4556 if (!adapter->wait_capability)
4559 /* if capabilities CRQ's were sent in this tasklet, the following
4560 * tasklet must wait until all responses are received
4562 if (atomic_read(&adapter->running_cap_crqs) != 0)
4563 adapter->wait_capability = true;
4564 spin_unlock_irqrestore(&queue->lock, flags);
4567 static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter)
4569 struct vio_dev *vdev = adapter->vdev;
4573 rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
4574 } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc));
4577 dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc);
4582 static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter)
4584 struct ibmvnic_crq_queue *crq = &adapter->crq;
4585 struct device *dev = &adapter->vdev->dev;
4586 struct vio_dev *vdev = adapter->vdev;
4591 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
4592 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
4594 /* Clean out the queue */
4595 memset(crq->msgs, 0, PAGE_SIZE);
4597 crq->active = false;
4599 /* And re-open it again */
4600 rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
4601 crq->msg_token, PAGE_SIZE);
4604 /* Adapter is good, but other end is not ready */
4605 dev_warn(dev, "Partner adapter not ready\n");
4607 dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc);
4612 static void release_crq_queue(struct ibmvnic_adapter *adapter)
4614 struct ibmvnic_crq_queue *crq = &adapter->crq;
4615 struct vio_dev *vdev = adapter->vdev;
4621 netdev_dbg(adapter->netdev, "Releasing CRQ\n");
4622 free_irq(vdev->irq, adapter);
4623 tasklet_kill(&adapter->tasklet);
4625 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
4626 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
4628 dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE,
4630 free_page((unsigned long)crq->msgs);
4632 crq->active = false;
4635 static int init_crq_queue(struct ibmvnic_adapter *adapter)
4637 struct ibmvnic_crq_queue *crq = &adapter->crq;
4638 struct device *dev = &adapter->vdev->dev;
4639 struct vio_dev *vdev = adapter->vdev;
4640 int rc, retrc = -ENOMEM;
4645 crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL);
4646 /* Should we allocate more than one page? */
4651 crq->size = PAGE_SIZE / sizeof(*crq->msgs);
4652 crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE,
4654 if (dma_mapping_error(dev, crq->msg_token))
4657 rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
4658 crq->msg_token, PAGE_SIZE);
4660 if (rc == H_RESOURCE)
4661 /* maybe kexecing and resource is busy. try a reset */
4662 rc = ibmvnic_reset_crq(adapter);
4665 if (rc == H_CLOSED) {
4666 dev_warn(dev, "Partner adapter not ready\n");
4668 dev_warn(dev, "Error %d opening adapter\n", rc);
4669 goto reg_crq_failed;
4674 tasklet_init(&adapter->tasklet, (void *)ibmvnic_tasklet,
4675 (unsigned long)adapter);
4677 netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq);
4678 snprintf(crq->name, sizeof(crq->name), "ibmvnic-%x",
4679 adapter->vdev->unit_address);
4680 rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, crq->name, adapter);
4682 dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n",
4684 goto req_irq_failed;
4687 rc = vio_enable_interrupts(vdev);
4689 dev_err(dev, "Error %d enabling interrupts\n", rc);
4690 goto req_irq_failed;
4694 spin_lock_init(&crq->lock);
4699 tasklet_kill(&adapter->tasklet);
4701 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
4702 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
4704 dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
4706 free_page((unsigned long)crq->msgs);
4711 static int ibmvnic_reset_init(struct ibmvnic_adapter *adapter)
4713 struct device *dev = &adapter->vdev->dev;
4714 unsigned long timeout = msecs_to_jiffies(30000);
4715 u64 old_num_rx_queues, old_num_tx_queues;
4718 adapter->from_passive_init = false;
4720 old_num_rx_queues = adapter->req_rx_queues;
4721 old_num_tx_queues = adapter->req_tx_queues;
4723 reinit_completion(&adapter->init_done);
4724 adapter->init_done_rc = 0;
4725 ibmvnic_send_crq_init(adapter);
4726 if (!wait_for_completion_timeout(&adapter->init_done, timeout)) {
4727 dev_err(dev, "Initialization sequence timed out\n");
4731 if (adapter->init_done_rc) {
4732 release_crq_queue(adapter);
4733 return adapter->init_done_rc;
4736 if (adapter->from_passive_init) {
4737 adapter->state = VNIC_OPEN;
4738 adapter->from_passive_init = false;
4742 if (adapter->resetting && !adapter->wait_for_reset &&
4743 adapter->reset_reason != VNIC_RESET_MOBILITY) {
4744 if (adapter->req_rx_queues != old_num_rx_queues ||
4745 adapter->req_tx_queues != old_num_tx_queues) {
4746 release_sub_crqs(adapter, 0);
4747 rc = init_sub_crqs(adapter);
4749 rc = reset_sub_crq_queues(adapter);
4752 rc = init_sub_crqs(adapter);
4756 dev_err(dev, "Initialization of sub crqs failed\n");
4757 release_crq_queue(adapter);
4761 rc = init_sub_crq_irqs(adapter);
4763 dev_err(dev, "Failed to initialize sub crq irqs\n");
4764 release_crq_queue(adapter);
4770 static int ibmvnic_init(struct ibmvnic_adapter *adapter)
4772 struct device *dev = &adapter->vdev->dev;
4773 unsigned long timeout = msecs_to_jiffies(30000);
4776 adapter->from_passive_init = false;
4778 adapter->init_done_rc = 0;
4779 ibmvnic_send_crq_init(adapter);
4780 if (!wait_for_completion_timeout(&adapter->init_done, timeout)) {
4781 dev_err(dev, "Initialization sequence timed out\n");
4785 if (adapter->init_done_rc) {
4786 release_crq_queue(adapter);
4787 return adapter->init_done_rc;
4790 if (adapter->from_passive_init) {
4791 adapter->state = VNIC_OPEN;
4792 adapter->from_passive_init = false;
4796 rc = init_sub_crqs(adapter);
4798 dev_err(dev, "Initialization of sub crqs failed\n");
4799 release_crq_queue(adapter);
4803 rc = init_sub_crq_irqs(adapter);
4805 dev_err(dev, "Failed to initialize sub crq irqs\n");
4806 release_crq_queue(adapter);
4812 static struct device_attribute dev_attr_failover;
4814 static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
4816 struct ibmvnic_adapter *adapter;
4817 struct net_device *netdev;
4818 unsigned char *mac_addr_p;
4821 dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n",
4824 mac_addr_p = (unsigned char *)vio_get_attribute(dev,
4825 VETH_MAC_ADDR, NULL);
4828 "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n",
4829 __FILE__, __LINE__);
4833 netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter),
4834 IBMVNIC_MAX_QUEUES);
4838 adapter = netdev_priv(netdev);
4839 adapter->state = VNIC_PROBING;
4840 dev_set_drvdata(&dev->dev, netdev);
4841 adapter->vdev = dev;
4842 adapter->netdev = netdev;
4844 ether_addr_copy(adapter->mac_addr, mac_addr_p);
4845 ether_addr_copy(netdev->dev_addr, adapter->mac_addr);
4846 netdev->irq = dev->irq;
4847 netdev->netdev_ops = &ibmvnic_netdev_ops;
4848 netdev->ethtool_ops = &ibmvnic_ethtool_ops;
4849 SET_NETDEV_DEV(netdev, &dev->dev);
4851 spin_lock_init(&adapter->stats_lock);
4853 INIT_WORK(&adapter->ibmvnic_reset, __ibmvnic_reset);
4854 INIT_LIST_HEAD(&adapter->rwi_list);
4855 spin_lock_init(&adapter->rwi_lock);
4856 init_completion(&adapter->init_done);
4857 adapter->resetting = false;
4860 rc = init_crq_queue(adapter);
4862 dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n",
4864 goto ibmvnic_init_fail;
4867 rc = ibmvnic_init(adapter);
4868 if (rc && rc != EAGAIN)
4869 goto ibmvnic_init_fail;
4870 } while (rc == EAGAIN);
4872 rc = init_stats_buffers(adapter);
4874 goto ibmvnic_init_fail;
4876 rc = init_stats_token(adapter);
4878 goto ibmvnic_stats_fail;
4880 netdev->mtu = adapter->req_mtu - ETH_HLEN;
4881 netdev->min_mtu = adapter->min_mtu - ETH_HLEN;
4882 netdev->max_mtu = adapter->max_mtu - ETH_HLEN;
4884 rc = device_create_file(&dev->dev, &dev_attr_failover);
4886 goto ibmvnic_dev_file_err;
4888 netif_carrier_off(netdev);
4889 rc = register_netdev(netdev);
4891 dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc);
4892 goto ibmvnic_register_fail;
4894 dev_info(&dev->dev, "ibmvnic registered\n");
4896 adapter->state = VNIC_PROBED;
4898 adapter->wait_for_reset = false;
4902 ibmvnic_register_fail:
4903 device_remove_file(&dev->dev, &dev_attr_failover);
4905 ibmvnic_dev_file_err:
4906 release_stats_token(adapter);
4909 release_stats_buffers(adapter);
4912 release_sub_crqs(adapter, 1);
4913 release_crq_queue(adapter);
4914 free_netdev(netdev);
4919 static int ibmvnic_remove(struct vio_dev *dev)
4921 struct net_device *netdev = dev_get_drvdata(&dev->dev);
4922 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
4924 adapter->state = VNIC_REMOVING;
4926 unregister_netdevice(netdev);
4928 release_resources(adapter);
4929 release_sub_crqs(adapter, 1);
4930 release_crq_queue(adapter);
4932 release_stats_token(adapter);
4933 release_stats_buffers(adapter);
4935 adapter->state = VNIC_REMOVED;
4938 device_remove_file(&dev->dev, &dev_attr_failover);
4939 free_netdev(netdev);
4940 dev_set_drvdata(&dev->dev, NULL);
4945 static ssize_t failover_store(struct device *dev, struct device_attribute *attr,
4946 const char *buf, size_t count)
4948 struct net_device *netdev = dev_get_drvdata(dev);
4949 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
4950 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
4951 __be64 session_token;
4954 if (!sysfs_streq(buf, "1"))
4957 rc = plpar_hcall(H_VIOCTL, retbuf, adapter->vdev->unit_address,
4958 H_GET_SESSION_TOKEN, 0, 0, 0);
4960 netdev_err(netdev, "Couldn't retrieve session token, rc %ld\n",
4965 session_token = (__be64)retbuf[0];
4966 netdev_dbg(netdev, "Initiating client failover, session id %llx\n",
4967 be64_to_cpu(session_token));
4968 rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
4969 H_SESSION_ERR_DETECTED, session_token, 0, 0);
4971 netdev_err(netdev, "Client initiated failover failed, rc %ld\n",
4979 static DEVICE_ATTR_WO(failover);
4981 static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev)
4983 struct net_device *netdev = dev_get_drvdata(&vdev->dev);
4984 struct ibmvnic_adapter *adapter;
4985 struct iommu_table *tbl;
4986 unsigned long ret = 0;
4989 tbl = get_iommu_table_base(&vdev->dev);
4991 /* netdev inits at probe time along with the structures we need below*/
4993 return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl);
4995 adapter = netdev_priv(netdev);
4997 ret += PAGE_SIZE; /* the crq message queue */
4998 ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl);
5000 for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++)
5001 ret += 4 * PAGE_SIZE; /* the scrq message queue */
5003 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
5005 ret += adapter->rx_pool[i].size *
5006 IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl);
5011 static int ibmvnic_resume(struct device *dev)
5013 struct net_device *netdev = dev_get_drvdata(dev);
5014 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
5016 if (adapter->state != VNIC_OPEN)
5019 tasklet_schedule(&adapter->tasklet);
5024 static const struct vio_device_id ibmvnic_device_table[] = {
5025 {"network", "IBM,vnic"},
5028 MODULE_DEVICE_TABLE(vio, ibmvnic_device_table);
5030 static const struct dev_pm_ops ibmvnic_pm_ops = {
5031 .resume = ibmvnic_resume
5034 static struct vio_driver ibmvnic_driver = {
5035 .id_table = ibmvnic_device_table,
5036 .probe = ibmvnic_probe,
5037 .remove = ibmvnic_remove,
5038 .get_desired_dma = ibmvnic_get_desired_dma,
5039 .name = ibmvnic_driver_name,
5040 .pm = &ibmvnic_pm_ops,
5043 /* module functions */
5044 static int __init ibmvnic_module_init(void)
5046 pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string,
5047 IBMVNIC_DRIVER_VERSION);
5049 return vio_register_driver(&ibmvnic_driver);
5052 static void __exit ibmvnic_module_exit(void)
5054 vio_unregister_driver(&ibmvnic_driver);
5057 module_init(ibmvnic_module_init);
5058 module_exit(ibmvnic_module_exit);