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>
64 #include <linux/ipv6.h>
65 #include <linux/irq.h>
66 #include <linux/kthread.h>
67 #include <linux/seq_file.h>
68 #include <linux/debugfs.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>
81 static const char ibmvnic_driver_name[] = "ibmvnic";
82 static const char ibmvnic_driver_string[] = "IBM System i/p Virtual NIC Driver";
84 MODULE_AUTHOR("Santiago Leon <santi_leon@yahoo.com>");
85 MODULE_DESCRIPTION("IBM System i/p Virtual NIC Driver");
86 MODULE_LICENSE("GPL");
87 MODULE_VERSION(IBMVNIC_DRIVER_VERSION);
89 static int ibmvnic_version = IBMVNIC_INITIAL_VERSION;
90 static int ibmvnic_remove(struct vio_dev *);
91 static void release_sub_crqs(struct ibmvnic_adapter *);
92 static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *);
93 static int ibmvnic_reset_crq(struct ibmvnic_adapter *);
94 static int ibmvnic_send_crq_init(struct ibmvnic_adapter *);
95 static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *);
96 static int ibmvnic_send_crq(struct ibmvnic_adapter *, union ibmvnic_crq *);
97 static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle,
98 union sub_crq *sub_crq);
99 static int send_subcrq_indirect(struct ibmvnic_adapter *, u64, u64, u64);
100 static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance);
101 static int enable_scrq_irq(struct ibmvnic_adapter *,
102 struct ibmvnic_sub_crq_queue *);
103 static int disable_scrq_irq(struct ibmvnic_adapter *,
104 struct ibmvnic_sub_crq_queue *);
105 static int pending_scrq(struct ibmvnic_adapter *,
106 struct ibmvnic_sub_crq_queue *);
107 static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *,
108 struct ibmvnic_sub_crq_queue *);
109 static int ibmvnic_poll(struct napi_struct *napi, int data);
110 static void send_map_query(struct ibmvnic_adapter *adapter);
111 static void send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8);
112 static void send_request_unmap(struct ibmvnic_adapter *, u8);
114 struct ibmvnic_stat {
115 char name[ETH_GSTRING_LEN];
119 #define IBMVNIC_STAT_OFF(stat) (offsetof(struct ibmvnic_adapter, stats) + \
120 offsetof(struct ibmvnic_statistics, stat))
121 #define IBMVNIC_GET_STAT(a, off) (*((u64 *)(((unsigned long)(a)) + off)))
123 static const struct ibmvnic_stat ibmvnic_stats[] = {
124 {"rx_packets", IBMVNIC_STAT_OFF(rx_packets)},
125 {"rx_bytes", IBMVNIC_STAT_OFF(rx_bytes)},
126 {"tx_packets", IBMVNIC_STAT_OFF(tx_packets)},
127 {"tx_bytes", IBMVNIC_STAT_OFF(tx_bytes)},
128 {"ucast_tx_packets", IBMVNIC_STAT_OFF(ucast_tx_packets)},
129 {"ucast_rx_packets", IBMVNIC_STAT_OFF(ucast_rx_packets)},
130 {"mcast_tx_packets", IBMVNIC_STAT_OFF(mcast_tx_packets)},
131 {"mcast_rx_packets", IBMVNIC_STAT_OFF(mcast_rx_packets)},
132 {"bcast_tx_packets", IBMVNIC_STAT_OFF(bcast_tx_packets)},
133 {"bcast_rx_packets", IBMVNIC_STAT_OFF(bcast_rx_packets)},
134 {"align_errors", IBMVNIC_STAT_OFF(align_errors)},
135 {"fcs_errors", IBMVNIC_STAT_OFF(fcs_errors)},
136 {"single_collision_frames", IBMVNIC_STAT_OFF(single_collision_frames)},
137 {"multi_collision_frames", IBMVNIC_STAT_OFF(multi_collision_frames)},
138 {"sqe_test_errors", IBMVNIC_STAT_OFF(sqe_test_errors)},
139 {"deferred_tx", IBMVNIC_STAT_OFF(deferred_tx)},
140 {"late_collisions", IBMVNIC_STAT_OFF(late_collisions)},
141 {"excess_collisions", IBMVNIC_STAT_OFF(excess_collisions)},
142 {"internal_mac_tx_errors", IBMVNIC_STAT_OFF(internal_mac_tx_errors)},
143 {"carrier_sense", IBMVNIC_STAT_OFF(carrier_sense)},
144 {"too_long_frames", IBMVNIC_STAT_OFF(too_long_frames)},
145 {"internal_mac_rx_errors", IBMVNIC_STAT_OFF(internal_mac_rx_errors)},
148 static long h_reg_sub_crq(unsigned long unit_address, unsigned long token,
149 unsigned long length, unsigned long *number,
152 unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
155 rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length);
162 /* net_device_ops functions */
164 static void init_rx_pool(struct ibmvnic_adapter *adapter,
165 struct ibmvnic_rx_pool *rx_pool, int num, int index,
166 int buff_size, int active)
168 netdev_dbg(adapter->netdev,
169 "Initializing rx_pool %d, %d buffs, %d bytes each\n",
170 index, num, buff_size);
172 rx_pool->index = index;
173 rx_pool->buff_size = buff_size;
174 rx_pool->active = active;
177 static int alloc_long_term_buff(struct ibmvnic_adapter *adapter,
178 struct ibmvnic_long_term_buff *ltb, int size)
180 struct device *dev = &adapter->vdev->dev;
183 ltb->buff = dma_alloc_coherent(dev, ltb->size, <b->addr,
187 dev_err(dev, "Couldn't alloc long term buffer\n");
190 ltb->map_id = adapter->map_id;
193 init_completion(&adapter->fw_done);
194 send_request_map(adapter, ltb->addr,
195 ltb->size, ltb->map_id);
196 wait_for_completion(&adapter->fw_done);
200 static void free_long_term_buff(struct ibmvnic_adapter *adapter,
201 struct ibmvnic_long_term_buff *ltb)
203 struct device *dev = &adapter->vdev->dev;
205 dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
206 if (!adapter->failover)
207 send_request_unmap(adapter, ltb->map_id);
210 static int alloc_rx_pool(struct ibmvnic_adapter *adapter,
211 struct ibmvnic_rx_pool *pool)
213 struct device *dev = &adapter->vdev->dev;
216 pool->free_map = kcalloc(pool->size, sizeof(int), GFP_KERNEL);
220 pool->rx_buff = kcalloc(pool->size, sizeof(struct ibmvnic_rx_buff),
223 if (!pool->rx_buff) {
224 dev_err(dev, "Couldn't alloc rx buffers\n");
225 kfree(pool->free_map);
229 if (alloc_long_term_buff(adapter, &pool->long_term_buff,
230 pool->size * pool->buff_size)) {
231 kfree(pool->free_map);
232 kfree(pool->rx_buff);
236 for (i = 0; i < pool->size; ++i)
237 pool->free_map[i] = i;
239 atomic_set(&pool->available, 0);
240 pool->next_alloc = 0;
246 static void replenish_rx_pool(struct ibmvnic_adapter *adapter,
247 struct ibmvnic_rx_pool *pool)
249 int count = pool->size - atomic_read(&pool->available);
250 struct device *dev = &adapter->vdev->dev;
251 int buffers_added = 0;
252 unsigned long lpar_rc;
253 union sub_crq sub_crq;
263 handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
264 be32_to_cpu(adapter->login_rsp_buf->
267 for (i = 0; i < count; ++i) {
268 skb = alloc_skb(pool->buff_size, GFP_ATOMIC);
270 dev_err(dev, "Couldn't replenish rx buff\n");
271 adapter->replenish_no_mem++;
275 index = pool->free_map[pool->next_free];
277 if (pool->rx_buff[index].skb)
278 dev_err(dev, "Inconsistent free_map!\n");
280 /* Copy the skb to the long term mapped DMA buffer */
281 offset = index * pool->buff_size;
282 dst = pool->long_term_buff.buff + offset;
283 memset(dst, 0, pool->buff_size);
284 dma_addr = pool->long_term_buff.addr + offset;
285 pool->rx_buff[index].data = dst;
287 pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP;
288 pool->rx_buff[index].dma = dma_addr;
289 pool->rx_buff[index].skb = skb;
290 pool->rx_buff[index].pool_index = pool->index;
291 pool->rx_buff[index].size = pool->buff_size;
293 memset(&sub_crq, 0, sizeof(sub_crq));
294 sub_crq.rx_add.first = IBMVNIC_CRQ_CMD;
295 sub_crq.rx_add.correlator =
296 cpu_to_be64((u64)&pool->rx_buff[index]);
297 sub_crq.rx_add.ioba = cpu_to_be32(dma_addr);
298 sub_crq.rx_add.map_id = pool->long_term_buff.map_id;
300 /* The length field of the sCRQ is defined to be 24 bits so the
301 * buffer size needs to be left shifted by a byte before it is
302 * converted to big endian to prevent the last byte from being
305 #ifdef __LITTLE_ENDIAN__
308 sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift);
310 lpar_rc = send_subcrq(adapter, handle_array[pool->index],
312 if (lpar_rc != H_SUCCESS)
316 adapter->replenish_add_buff_success++;
317 pool->next_free = (pool->next_free + 1) % pool->size;
319 atomic_add(buffers_added, &pool->available);
323 dev_info(dev, "replenish pools failure\n");
324 pool->free_map[pool->next_free] = index;
325 pool->rx_buff[index].skb = NULL;
326 if (!dma_mapping_error(dev, dma_addr))
327 dma_unmap_single(dev, dma_addr, pool->buff_size,
330 dev_kfree_skb_any(skb);
331 adapter->replenish_add_buff_failure++;
332 atomic_add(buffers_added, &pool->available);
335 static void replenish_pools(struct ibmvnic_adapter *adapter)
339 if (adapter->migrated)
342 adapter->replenish_task_cycles++;
343 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
345 if (adapter->rx_pool[i].active)
346 replenish_rx_pool(adapter, &adapter->rx_pool[i]);
350 static void free_rx_pool(struct ibmvnic_adapter *adapter,
351 struct ibmvnic_rx_pool *pool)
355 kfree(pool->free_map);
356 pool->free_map = NULL;
361 for (i = 0; i < pool->size; i++) {
362 if (pool->rx_buff[i].skb) {
363 dev_kfree_skb_any(pool->rx_buff[i].skb);
364 pool->rx_buff[i].skb = NULL;
367 kfree(pool->rx_buff);
368 pool->rx_buff = NULL;
371 static int ibmvnic_open(struct net_device *netdev)
373 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
374 struct device *dev = &adapter->vdev->dev;
375 struct ibmvnic_tx_pool *tx_pool;
376 union ibmvnic_crq crq;
383 be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
385 be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
386 size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
387 be32_to_cpu(adapter->login_rsp_buf->
388 off_rxadd_buff_size));
390 adapter->napi = kcalloc(adapter->req_rx_queues,
391 sizeof(struct napi_struct), GFP_KERNEL);
393 goto alloc_napi_failed;
394 for (i = 0; i < adapter->req_rx_queues; i++) {
395 netif_napi_add(netdev, &adapter->napi[i], ibmvnic_poll,
397 napi_enable(&adapter->napi[i]);
400 kcalloc(rxadd_subcrqs, sizeof(struct ibmvnic_rx_pool), GFP_KERNEL);
402 if (!adapter->rx_pool)
403 goto rx_pool_arr_alloc_failed;
404 send_map_query(adapter);
405 for (i = 0; i < rxadd_subcrqs; i++) {
406 init_rx_pool(adapter, &adapter->rx_pool[i],
407 IBMVNIC_BUFFS_PER_POOL, i,
408 be64_to_cpu(size_array[i]), 1);
409 if (alloc_rx_pool(adapter, &adapter->rx_pool[i])) {
410 dev_err(dev, "Couldn't alloc rx pool\n");
411 goto rx_pool_alloc_failed;
415 kcalloc(tx_subcrqs, sizeof(struct ibmvnic_tx_pool), GFP_KERNEL);
417 if (!adapter->tx_pool)
418 goto tx_pool_arr_alloc_failed;
419 for (i = 0; i < tx_subcrqs; i++) {
420 tx_pool = &adapter->tx_pool[i];
422 kcalloc(adapter->max_tx_entries_per_subcrq,
423 sizeof(struct ibmvnic_tx_buff), GFP_KERNEL);
424 if (!tx_pool->tx_buff)
425 goto tx_pool_alloc_failed;
427 if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff,
428 adapter->max_tx_entries_per_subcrq *
430 goto tx_ltb_alloc_failed;
433 kcalloc(adapter->max_tx_entries_per_subcrq,
434 sizeof(int), GFP_KERNEL);
435 if (!tx_pool->free_map)
436 goto tx_fm_alloc_failed;
438 for (j = 0; j < adapter->max_tx_entries_per_subcrq; j++)
439 tx_pool->free_map[j] = j;
441 tx_pool->consumer_index = 0;
442 tx_pool->producer_index = 0;
444 adapter->bounce_buffer_size =
445 (netdev->mtu + ETH_HLEN - 1) / PAGE_SIZE + 1;
446 adapter->bounce_buffer = kmalloc(adapter->bounce_buffer_size,
448 if (!adapter->bounce_buffer)
449 goto bounce_alloc_failed;
451 adapter->bounce_buffer_dma = dma_map_single(dev, adapter->bounce_buffer,
452 adapter->bounce_buffer_size,
454 if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
455 dev_err(dev, "Couldn't map tx bounce buffer\n");
456 goto bounce_map_failed;
458 replenish_pools(adapter);
460 /* We're ready to receive frames, enable the sub-crq interrupts and
461 * set the logical link state to up
463 for (i = 0; i < adapter->req_rx_queues; i++)
464 enable_scrq_irq(adapter, adapter->rx_scrq[i]);
466 for (i = 0; i < adapter->req_tx_queues; i++)
467 enable_scrq_irq(adapter, adapter->tx_scrq[i]);
469 memset(&crq, 0, sizeof(crq));
470 crq.logical_link_state.first = IBMVNIC_CRQ_CMD;
471 crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
472 crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_UP;
473 ibmvnic_send_crq(adapter, &crq);
475 netif_tx_start_all_queues(netdev);
480 kfree(adapter->bounce_buffer);
483 kfree(adapter->tx_pool[i].free_map);
485 free_long_term_buff(adapter, &adapter->tx_pool[i].long_term_buff);
487 kfree(adapter->tx_pool[i].tx_buff);
488 tx_pool_alloc_failed:
489 for (j = 0; j < i; j++) {
490 kfree(adapter->tx_pool[j].tx_buff);
491 free_long_term_buff(adapter,
492 &adapter->tx_pool[j].long_term_buff);
493 kfree(adapter->tx_pool[j].free_map);
495 kfree(adapter->tx_pool);
496 adapter->tx_pool = NULL;
497 tx_pool_arr_alloc_failed:
499 rx_pool_alloc_failed:
500 for (j = 0; j < i; j++) {
501 free_rx_pool(adapter, &adapter->rx_pool[j]);
502 free_long_term_buff(adapter,
503 &adapter->rx_pool[j].long_term_buff);
505 kfree(adapter->rx_pool);
506 adapter->rx_pool = NULL;
507 rx_pool_arr_alloc_failed:
508 for (i = 0; i < adapter->req_rx_queues; i++)
509 napi_disable(&adapter->napi[i]);
514 static int ibmvnic_close(struct net_device *netdev)
516 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
517 struct device *dev = &adapter->vdev->dev;
518 union ibmvnic_crq crq;
521 adapter->closing = true;
523 for (i = 0; i < adapter->req_rx_queues; i++)
524 napi_disable(&adapter->napi[i]);
526 if (!adapter->failover)
527 netif_tx_stop_all_queues(netdev);
529 if (adapter->bounce_buffer) {
530 if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
531 dma_unmap_single(&adapter->vdev->dev,
532 adapter->bounce_buffer_dma,
533 adapter->bounce_buffer_size,
535 adapter->bounce_buffer_dma = DMA_ERROR_CODE;
537 kfree(adapter->bounce_buffer);
538 adapter->bounce_buffer = NULL;
541 memset(&crq, 0, sizeof(crq));
542 crq.logical_link_state.first = IBMVNIC_CRQ_CMD;
543 crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
544 crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_DN;
545 ibmvnic_send_crq(adapter, &crq);
547 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
549 kfree(adapter->tx_pool[i].tx_buff);
550 free_long_term_buff(adapter,
551 &adapter->tx_pool[i].long_term_buff);
552 kfree(adapter->tx_pool[i].free_map);
554 kfree(adapter->tx_pool);
555 adapter->tx_pool = NULL;
557 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
559 free_rx_pool(adapter, &adapter->rx_pool[i]);
560 free_long_term_buff(adapter,
561 &adapter->rx_pool[i].long_term_buff);
563 kfree(adapter->rx_pool);
564 adapter->rx_pool = NULL;
566 adapter->closing = false;
572 * build_hdr_data - creates L2/L3/L4 header data buffer
573 * @hdr_field - bitfield determining needed headers
574 * @skb - socket buffer
575 * @hdr_len - array of header lengths
576 * @tot_len - total length of data
578 * Reads hdr_field to determine which headers are needed by firmware.
579 * Builds a buffer containing these headers. Saves individual header
580 * lengths and total buffer length to be used to build descriptors.
582 static int build_hdr_data(u8 hdr_field, struct sk_buff *skb,
583 int *hdr_len, u8 *hdr_data)
588 hdr_len[0] = sizeof(struct ethhdr);
590 if (skb->protocol == htons(ETH_P_IP)) {
591 hdr_len[1] = ip_hdr(skb)->ihl * 4;
592 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
593 hdr_len[2] = tcp_hdrlen(skb);
594 else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
595 hdr_len[2] = sizeof(struct udphdr);
596 } else if (skb->protocol == htons(ETH_P_IPV6)) {
597 hdr_len[1] = sizeof(struct ipv6hdr);
598 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
599 hdr_len[2] = tcp_hdrlen(skb);
600 else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)
601 hdr_len[2] = sizeof(struct udphdr);
604 memset(hdr_data, 0, 120);
605 if ((hdr_field >> 6) & 1) {
606 hdr = skb_mac_header(skb);
607 memcpy(hdr_data, hdr, hdr_len[0]);
611 if ((hdr_field >> 5) & 1) {
612 hdr = skb_network_header(skb);
613 memcpy(hdr_data + len, hdr, hdr_len[1]);
617 if ((hdr_field >> 4) & 1) {
618 hdr = skb_transport_header(skb);
619 memcpy(hdr_data + len, hdr, hdr_len[2]);
626 * create_hdr_descs - create header and header extension descriptors
627 * @hdr_field - bitfield determining needed headers
628 * @data - buffer containing header data
629 * @len - length of data buffer
630 * @hdr_len - array of individual header lengths
631 * @scrq_arr - descriptor array
633 * Creates header and, if needed, header extension descriptors and
634 * places them in a descriptor array, scrq_arr
637 static void create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len,
638 union sub_crq *scrq_arr)
640 union sub_crq hdr_desc;
645 while (tmp_len > 0) {
646 cur = hdr_data + len - tmp_len;
648 memset(&hdr_desc, 0, sizeof(hdr_desc));
649 if (cur != hdr_data) {
650 data = hdr_desc.hdr_ext.data;
651 tmp = tmp_len > 29 ? 29 : tmp_len;
652 hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD;
653 hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC;
654 hdr_desc.hdr_ext.len = tmp;
656 data = hdr_desc.hdr.data;
657 tmp = tmp_len > 24 ? 24 : tmp_len;
658 hdr_desc.hdr.first = IBMVNIC_CRQ_CMD;
659 hdr_desc.hdr.type = IBMVNIC_HDR_DESC;
660 hdr_desc.hdr.len = tmp;
661 hdr_desc.hdr.l2_len = (u8)hdr_len[0];
662 hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]);
663 hdr_desc.hdr.l4_len = (u8)hdr_len[2];
664 hdr_desc.hdr.flag = hdr_field << 1;
666 memcpy(data, cur, tmp);
668 *scrq_arr = hdr_desc;
674 * build_hdr_descs_arr - build a header descriptor array
675 * @skb - socket buffer
676 * @num_entries - number of descriptors to be sent
677 * @subcrq - first TX descriptor
678 * @hdr_field - bit field determining which headers will be sent
680 * This function will build a TX descriptor array with applicable
681 * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect.
684 static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff,
685 int *num_entries, u8 hdr_field)
687 int hdr_len[3] = {0, 0, 0};
689 u8 *hdr_data = txbuff->hdr_data;
691 tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len,
696 num_entries += len % 29 ? len / 29 + 1 : len / 29;
697 create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len,
698 txbuff->indir_arr + 1);
701 static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
703 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
704 int queue_num = skb_get_queue_mapping(skb);
705 u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req;
706 struct device *dev = &adapter->vdev->dev;
707 struct ibmvnic_tx_buff *tx_buff = NULL;
708 struct ibmvnic_tx_pool *tx_pool;
709 unsigned int tx_send_failed = 0;
710 unsigned int tx_map_failed = 0;
711 unsigned int tx_dropped = 0;
712 unsigned int tx_packets = 0;
713 unsigned int tx_bytes = 0;
714 dma_addr_t data_dma_addr;
715 struct netdev_queue *txq;
716 bool used_bounce = false;
717 unsigned long lpar_rc;
718 union sub_crq tx_crq;
726 tx_pool = &adapter->tx_pool[queue_num];
727 txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb));
728 handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
729 be32_to_cpu(adapter->login_rsp_buf->
730 off_txsubm_subcrqs));
731 if (adapter->migrated) {
734 ret = NETDEV_TX_BUSY;
738 index = tx_pool->free_map[tx_pool->consumer_index];
739 offset = index * adapter->req_mtu;
740 dst = tx_pool->long_term_buff.buff + offset;
741 memset(dst, 0, adapter->req_mtu);
742 skb_copy_from_linear_data(skb, dst, skb->len);
743 data_dma_addr = tx_pool->long_term_buff.addr + offset;
745 tx_pool->consumer_index =
746 (tx_pool->consumer_index + 1) %
747 adapter->max_tx_entries_per_subcrq;
749 tx_buff = &tx_pool->tx_buff[index];
751 tx_buff->data_dma[0] = data_dma_addr;
752 tx_buff->data_len[0] = skb->len;
753 tx_buff->index = index;
754 tx_buff->pool_index = queue_num;
755 tx_buff->last_frag = true;
756 tx_buff->used_bounce = used_bounce;
758 memset(&tx_crq, 0, sizeof(tx_crq));
759 tx_crq.v1.first = IBMVNIC_CRQ_CMD;
760 tx_crq.v1.type = IBMVNIC_TX_DESC;
761 tx_crq.v1.n_crq_elem = 1;
763 tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED;
764 tx_crq.v1.correlator = cpu_to_be32(index);
765 tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id);
766 tx_crq.v1.sge_len = cpu_to_be32(skb->len);
767 tx_crq.v1.ioba = cpu_to_be64(data_dma_addr);
769 if (adapter->vlan_header_insertion) {
770 tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT;
771 tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci);
774 if (skb->protocol == htons(ETH_P_IP)) {
775 if (ip_hdr(skb)->version == 4)
776 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4;
777 else if (ip_hdr(skb)->version == 6)
778 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6;
780 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
781 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP;
782 else if (ip_hdr(skb)->protocol != IPPROTO_TCP)
783 tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP;
786 if (skb->ip_summed == CHECKSUM_PARTIAL) {
787 tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD;
790 /* determine if l2/3/4 headers are sent to firmware */
791 if ((*hdrs >> 7) & 1 &&
792 (skb->protocol == htons(ETH_P_IP) ||
793 skb->protocol == htons(ETH_P_IPV6))) {
794 build_hdr_descs_arr(tx_buff, &num_entries, *hdrs);
795 tx_crq.v1.n_crq_elem = num_entries;
796 tx_buff->indir_arr[0] = tx_crq;
797 tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr,
798 sizeof(tx_buff->indir_arr),
800 if (dma_mapping_error(dev, tx_buff->indir_dma)) {
801 if (!firmware_has_feature(FW_FEATURE_CMO))
802 dev_err(dev, "tx: unable to map descriptor array\n");
805 ret = NETDEV_TX_BUSY;
808 lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num],
809 (u64)tx_buff->indir_dma,
812 lpar_rc = send_subcrq(adapter, handle_array[queue_num],
815 if (lpar_rc != H_SUCCESS) {
816 dev_err(dev, "tx failed with code %ld\n", lpar_rc);
818 if (tx_pool->consumer_index == 0)
819 tx_pool->consumer_index =
820 adapter->max_tx_entries_per_subcrq - 1;
822 tx_pool->consumer_index--;
826 ret = NETDEV_TX_BUSY;
830 tx_bytes += skb->len;
831 txq->trans_start = jiffies;
835 netdev->stats.tx_dropped += tx_dropped;
836 netdev->stats.tx_bytes += tx_bytes;
837 netdev->stats.tx_packets += tx_packets;
838 adapter->tx_send_failed += tx_send_failed;
839 adapter->tx_map_failed += tx_map_failed;
844 static void ibmvnic_set_multi(struct net_device *netdev)
846 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
847 struct netdev_hw_addr *ha;
848 union ibmvnic_crq crq;
850 memset(&crq, 0, sizeof(crq));
851 crq.request_capability.first = IBMVNIC_CRQ_CMD;
852 crq.request_capability.cmd = REQUEST_CAPABILITY;
854 if (netdev->flags & IFF_PROMISC) {
855 if (!adapter->promisc_supported)
858 if (netdev->flags & IFF_ALLMULTI) {
859 /* Accept all multicast */
860 memset(&crq, 0, sizeof(crq));
861 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
862 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
863 crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL;
864 ibmvnic_send_crq(adapter, &crq);
865 } else if (netdev_mc_empty(netdev)) {
866 /* Reject all multicast */
867 memset(&crq, 0, sizeof(crq));
868 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
869 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
870 crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL;
871 ibmvnic_send_crq(adapter, &crq);
873 /* Accept one or more multicast(s) */
874 netdev_for_each_mc_addr(ha, netdev) {
875 memset(&crq, 0, sizeof(crq));
876 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
877 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
878 crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC;
879 ether_addr_copy(&crq.multicast_ctrl.mac_addr[0],
881 ibmvnic_send_crq(adapter, &crq);
887 static int ibmvnic_set_mac(struct net_device *netdev, void *p)
889 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
890 struct sockaddr *addr = p;
891 union ibmvnic_crq crq;
893 if (!is_valid_ether_addr(addr->sa_data))
894 return -EADDRNOTAVAIL;
896 memset(&crq, 0, sizeof(crq));
897 crq.change_mac_addr.first = IBMVNIC_CRQ_CMD;
898 crq.change_mac_addr.cmd = CHANGE_MAC_ADDR;
899 ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data);
900 ibmvnic_send_crq(adapter, &crq);
901 /* netdev->dev_addr is changed in handle_change_mac_rsp function */
905 static void ibmvnic_tx_timeout(struct net_device *dev)
907 struct ibmvnic_adapter *adapter = netdev_priv(dev);
910 /* Adapter timed out, resetting it */
911 release_sub_crqs(adapter);
912 rc = ibmvnic_reset_crq(adapter);
914 dev_err(&adapter->vdev->dev, "Adapter timeout, reset failed\n");
916 ibmvnic_send_crq_init(adapter);
919 static void remove_buff_from_pool(struct ibmvnic_adapter *adapter,
920 struct ibmvnic_rx_buff *rx_buff)
922 struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index];
926 pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff);
927 pool->next_alloc = (pool->next_alloc + 1) % pool->size;
929 atomic_dec(&pool->available);
932 static int ibmvnic_poll(struct napi_struct *napi, int budget)
934 struct net_device *netdev = napi->dev;
935 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
936 int scrq_num = (int)(napi - adapter->napi);
937 int frames_processed = 0;
939 while (frames_processed < budget) {
941 struct ibmvnic_rx_buff *rx_buff;
947 if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num]))
949 next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]);
951 (struct ibmvnic_rx_buff *)be64_to_cpu(next->
953 /* do error checking */
954 if (next->rx_comp.rc) {
955 netdev_err(netdev, "rx error %x\n", next->rx_comp.rc);
957 next->rx_comp.first = 0;
958 remove_buff_from_pool(adapter, rx_buff);
962 length = be32_to_cpu(next->rx_comp.len);
963 offset = be16_to_cpu(next->rx_comp.off_frame_data);
964 flags = next->rx_comp.flags;
966 skb_copy_to_linear_data(skb, rx_buff->data + offset,
968 skb->vlan_tci = be16_to_cpu(next->rx_comp.vlan_tci);
970 next->rx_comp.first = 0;
971 remove_buff_from_pool(adapter, rx_buff);
973 skb_put(skb, length);
974 skb->protocol = eth_type_trans(skb, netdev);
976 if (flags & IBMVNIC_IP_CHKSUM_GOOD &&
977 flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) {
978 skb->ip_summed = CHECKSUM_UNNECESSARY;
982 napi_gro_receive(napi, skb); /* send it up */
983 netdev->stats.rx_packets++;
984 netdev->stats.rx_bytes += length;
987 replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]);
989 if (frames_processed < budget) {
990 enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
992 if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) &&
993 napi_reschedule(napi)) {
994 disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
998 return frames_processed;
1001 #ifdef CONFIG_NET_POLL_CONTROLLER
1002 static void ibmvnic_netpoll_controller(struct net_device *dev)
1004 struct ibmvnic_adapter *adapter = netdev_priv(dev);
1007 replenish_pools(netdev_priv(dev));
1008 for (i = 0; i < adapter->req_rx_queues; i++)
1009 ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq,
1010 adapter->rx_scrq[i]);
1014 static const struct net_device_ops ibmvnic_netdev_ops = {
1015 .ndo_open = ibmvnic_open,
1016 .ndo_stop = ibmvnic_close,
1017 .ndo_start_xmit = ibmvnic_xmit,
1018 .ndo_set_rx_mode = ibmvnic_set_multi,
1019 .ndo_set_mac_address = ibmvnic_set_mac,
1020 .ndo_validate_addr = eth_validate_addr,
1021 .ndo_tx_timeout = ibmvnic_tx_timeout,
1022 #ifdef CONFIG_NET_POLL_CONTROLLER
1023 .ndo_poll_controller = ibmvnic_netpoll_controller,
1027 /* ethtool functions */
1029 static int ibmvnic_get_settings(struct net_device *netdev,
1030 struct ethtool_cmd *cmd)
1032 cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
1034 cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg |
1036 ethtool_cmd_speed_set(cmd, SPEED_1000);
1037 cmd->duplex = DUPLEX_FULL;
1038 cmd->port = PORT_FIBRE;
1039 cmd->phy_address = 0;
1040 cmd->transceiver = XCVR_INTERNAL;
1041 cmd->autoneg = AUTONEG_ENABLE;
1047 static void ibmvnic_get_drvinfo(struct net_device *dev,
1048 struct ethtool_drvinfo *info)
1050 strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver));
1051 strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version));
1054 static u32 ibmvnic_get_msglevel(struct net_device *netdev)
1056 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1058 return adapter->msg_enable;
1061 static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data)
1063 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1065 adapter->msg_enable = data;
1068 static u32 ibmvnic_get_link(struct net_device *netdev)
1070 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1072 /* Don't need to send a query because we request a logical link up at
1073 * init and then we wait for link state indications
1075 return adapter->logical_link_state;
1078 static void ibmvnic_get_ringparam(struct net_device *netdev,
1079 struct ethtool_ringparam *ring)
1081 ring->rx_max_pending = 0;
1082 ring->tx_max_pending = 0;
1083 ring->rx_mini_max_pending = 0;
1084 ring->rx_jumbo_max_pending = 0;
1085 ring->rx_pending = 0;
1086 ring->tx_pending = 0;
1087 ring->rx_mini_pending = 0;
1088 ring->rx_jumbo_pending = 0;
1091 static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1095 if (stringset != ETH_SS_STATS)
1098 for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++, data += ETH_GSTRING_LEN)
1099 memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN);
1102 static int ibmvnic_get_sset_count(struct net_device *dev, int sset)
1106 return ARRAY_SIZE(ibmvnic_stats);
1112 static void ibmvnic_get_ethtool_stats(struct net_device *dev,
1113 struct ethtool_stats *stats, u64 *data)
1115 struct ibmvnic_adapter *adapter = netdev_priv(dev);
1116 union ibmvnic_crq crq;
1119 memset(&crq, 0, sizeof(crq));
1120 crq.request_statistics.first = IBMVNIC_CRQ_CMD;
1121 crq.request_statistics.cmd = REQUEST_STATISTICS;
1122 crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token);
1123 crq.request_statistics.len =
1124 cpu_to_be32(sizeof(struct ibmvnic_statistics));
1126 /* Wait for data to be written */
1127 init_completion(&adapter->stats_done);
1128 ibmvnic_send_crq(adapter, &crq);
1129 wait_for_completion(&adapter->stats_done);
1131 for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++)
1132 data[i] = IBMVNIC_GET_STAT(adapter, ibmvnic_stats[i].offset);
1135 static const struct ethtool_ops ibmvnic_ethtool_ops = {
1136 .get_settings = ibmvnic_get_settings,
1137 .get_drvinfo = ibmvnic_get_drvinfo,
1138 .get_msglevel = ibmvnic_get_msglevel,
1139 .set_msglevel = ibmvnic_set_msglevel,
1140 .get_link = ibmvnic_get_link,
1141 .get_ringparam = ibmvnic_get_ringparam,
1142 .get_strings = ibmvnic_get_strings,
1143 .get_sset_count = ibmvnic_get_sset_count,
1144 .get_ethtool_stats = ibmvnic_get_ethtool_stats,
1147 /* Routines for managing CRQs/sCRQs */
1149 static void release_sub_crq_queue(struct ibmvnic_adapter *adapter,
1150 struct ibmvnic_sub_crq_queue *scrq)
1152 struct device *dev = &adapter->vdev->dev;
1155 netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n");
1157 /* Close the sub-crqs */
1159 rc = plpar_hcall_norets(H_FREE_SUB_CRQ,
1160 adapter->vdev->unit_address,
1162 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
1164 dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
1166 free_pages((unsigned long)scrq->msgs, 2);
1170 static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter
1173 struct device *dev = &adapter->vdev->dev;
1174 struct ibmvnic_sub_crq_queue *scrq;
1177 scrq = kmalloc(sizeof(*scrq), GFP_ATOMIC);
1181 scrq->msgs = (union sub_crq *)__get_free_pages(GFP_ATOMIC, 2);
1182 memset(scrq->msgs, 0, 4 * PAGE_SIZE);
1184 dev_warn(dev, "Couldn't allocate crq queue messages page\n");
1185 goto zero_page_failed;
1188 scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE,
1190 if (dma_mapping_error(dev, scrq->msg_token)) {
1191 dev_warn(dev, "Couldn't map crq queue messages page\n");
1195 rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token,
1196 4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq);
1198 if (rc == H_RESOURCE)
1199 rc = ibmvnic_reset_crq(adapter);
1201 if (rc == H_CLOSED) {
1202 dev_warn(dev, "Partner adapter not ready, waiting.\n");
1204 dev_warn(dev, "Error %d registering sub-crq\n", rc);
1208 scrq->adapter = adapter;
1209 scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs);
1211 scrq->rx_skb_top = NULL;
1212 spin_lock_init(&scrq->lock);
1214 netdev_dbg(adapter->netdev,
1215 "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n",
1216 scrq->crq_num, scrq->hw_irq, scrq->irq);
1221 dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
1224 free_pages((unsigned long)scrq->msgs, 2);
1231 static void release_sub_crqs(struct ibmvnic_adapter *adapter)
1235 if (adapter->tx_scrq) {
1236 for (i = 0; i < adapter->req_tx_queues; i++)
1237 if (adapter->tx_scrq[i]) {
1238 free_irq(adapter->tx_scrq[i]->irq,
1239 adapter->tx_scrq[i]);
1240 irq_dispose_mapping(adapter->tx_scrq[i]->irq);
1241 release_sub_crq_queue(adapter,
1242 adapter->tx_scrq[i]);
1244 adapter->tx_scrq = NULL;
1247 if (adapter->rx_scrq) {
1248 for (i = 0; i < adapter->req_rx_queues; i++)
1249 if (adapter->rx_scrq[i]) {
1250 free_irq(adapter->rx_scrq[i]->irq,
1251 adapter->rx_scrq[i]);
1252 irq_dispose_mapping(adapter->rx_scrq[i]->irq);
1253 release_sub_crq_queue(adapter,
1254 adapter->rx_scrq[i]);
1256 adapter->rx_scrq = NULL;
1259 adapter->requested_caps = 0;
1262 static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *adapter)
1266 if (adapter->tx_scrq) {
1267 for (i = 0; i < adapter->req_tx_queues; i++)
1268 if (adapter->tx_scrq[i])
1269 release_sub_crq_queue(adapter,
1270 adapter->tx_scrq[i]);
1271 adapter->tx_scrq = NULL;
1274 if (adapter->rx_scrq) {
1275 for (i = 0; i < adapter->req_rx_queues; i++)
1276 if (adapter->rx_scrq[i])
1277 release_sub_crq_queue(adapter,
1278 adapter->rx_scrq[i]);
1279 adapter->rx_scrq = NULL;
1282 adapter->requested_caps = 0;
1285 static int disable_scrq_irq(struct ibmvnic_adapter *adapter,
1286 struct ibmvnic_sub_crq_queue *scrq)
1288 struct device *dev = &adapter->vdev->dev;
1291 rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
1292 H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
1294 dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n",
1299 static int enable_scrq_irq(struct ibmvnic_adapter *adapter,
1300 struct ibmvnic_sub_crq_queue *scrq)
1302 struct device *dev = &adapter->vdev->dev;
1305 if (scrq->hw_irq > 0x100000000ULL) {
1306 dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq);
1310 rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
1311 H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
1313 dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n",
1318 static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter,
1319 struct ibmvnic_sub_crq_queue *scrq)
1321 struct device *dev = &adapter->vdev->dev;
1322 struct ibmvnic_tx_buff *txbuff;
1323 union sub_crq *next;
1329 while (pending_scrq(adapter, scrq)) {
1330 unsigned int pool = scrq->pool_index;
1332 next = ibmvnic_next_scrq(adapter, scrq);
1333 for (i = 0; i < next->tx_comp.num_comps; i++) {
1334 if (next->tx_comp.rcs[i]) {
1335 dev_err(dev, "tx error %x\n",
1336 next->tx_comp.rcs[i]);
1339 index = be32_to_cpu(next->tx_comp.correlators[i]);
1340 txbuff = &adapter->tx_pool[pool].tx_buff[index];
1342 for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) {
1343 if (!txbuff->data_dma[j])
1346 txbuff->data_dma[j] = 0;
1347 txbuff->used_bounce = false;
1349 /* if sub_crq was sent indirectly */
1350 first = txbuff->indir_arr[0].generic.first;
1351 if (first == IBMVNIC_CRQ_CMD) {
1352 dma_unmap_single(dev, txbuff->indir_dma,
1353 sizeof(txbuff->indir_arr),
1357 if (txbuff->last_frag)
1358 dev_kfree_skb_any(txbuff->skb);
1360 adapter->tx_pool[pool].free_map[adapter->tx_pool[pool].
1361 producer_index] = index;
1362 adapter->tx_pool[pool].producer_index =
1363 (adapter->tx_pool[pool].producer_index + 1) %
1364 adapter->max_tx_entries_per_subcrq;
1366 /* remove tx_comp scrq*/
1367 next->tx_comp.first = 0;
1370 enable_scrq_irq(adapter, scrq);
1372 if (pending_scrq(adapter, scrq)) {
1373 disable_scrq_irq(adapter, scrq);
1380 static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance)
1382 struct ibmvnic_sub_crq_queue *scrq = instance;
1383 struct ibmvnic_adapter *adapter = scrq->adapter;
1385 disable_scrq_irq(adapter, scrq);
1386 ibmvnic_complete_tx(adapter, scrq);
1391 static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance)
1393 struct ibmvnic_sub_crq_queue *scrq = instance;
1394 struct ibmvnic_adapter *adapter = scrq->adapter;
1396 if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) {
1397 disable_scrq_irq(adapter, scrq);
1398 __napi_schedule(&adapter->napi[scrq->scrq_num]);
1404 static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter)
1406 struct device *dev = &adapter->vdev->dev;
1407 struct ibmvnic_sub_crq_queue *scrq;
1411 for (i = 0; i < adapter->req_tx_queues; i++) {
1412 scrq = adapter->tx_scrq[i];
1413 scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
1417 dev_err(dev, "Error mapping irq\n");
1418 goto req_tx_irq_failed;
1421 rc = request_irq(scrq->irq, ibmvnic_interrupt_tx,
1422 0, "ibmvnic_tx", scrq);
1425 dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n",
1427 irq_dispose_mapping(scrq->irq);
1428 goto req_rx_irq_failed;
1432 for (i = 0; i < adapter->req_rx_queues; i++) {
1433 scrq = adapter->rx_scrq[i];
1434 scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
1437 dev_err(dev, "Error mapping irq\n");
1438 goto req_rx_irq_failed;
1440 rc = request_irq(scrq->irq, ibmvnic_interrupt_rx,
1441 0, "ibmvnic_rx", scrq);
1443 dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n",
1445 irq_dispose_mapping(scrq->irq);
1446 goto req_rx_irq_failed;
1452 for (j = 0; j < i; j++) {
1453 free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]);
1454 irq_dispose_mapping(adapter->rx_scrq[j]->irq);
1456 i = adapter->req_tx_queues;
1458 for (j = 0; j < i; j++) {
1459 free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]);
1460 irq_dispose_mapping(adapter->rx_scrq[j]->irq);
1462 release_sub_crqs_no_irqs(adapter);
1466 static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry)
1468 struct device *dev = &adapter->vdev->dev;
1469 struct ibmvnic_sub_crq_queue **allqueues;
1470 int registered_queues = 0;
1471 union ibmvnic_crq crq;
1477 /* Sub-CRQ entries are 32 byte long */
1478 int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4);
1480 if (adapter->min_tx_entries_per_subcrq > entries_page ||
1481 adapter->min_rx_add_entries_per_subcrq > entries_page) {
1482 dev_err(dev, "Fatal, invalid entries per sub-crq\n");
1483 goto allqueues_failed;
1486 /* Get the minimum between the queried max and the entries
1487 * that fit in our PAGE_SIZE
1489 adapter->req_tx_entries_per_subcrq =
1490 adapter->max_tx_entries_per_subcrq > entries_page ?
1491 entries_page : adapter->max_tx_entries_per_subcrq;
1492 adapter->req_rx_add_entries_per_subcrq =
1493 adapter->max_rx_add_entries_per_subcrq > entries_page ?
1494 entries_page : adapter->max_rx_add_entries_per_subcrq;
1496 adapter->req_tx_queues = adapter->opt_tx_comp_sub_queues;
1497 adapter->req_rx_queues = adapter->opt_rx_comp_queues;
1498 adapter->req_rx_add_queues = adapter->max_rx_add_queues;
1500 adapter->req_mtu = adapter->netdev->mtu + ETH_HLEN;
1503 total_queues = adapter->req_tx_queues + adapter->req_rx_queues;
1505 allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_ATOMIC);
1507 goto allqueues_failed;
1509 for (i = 0; i < total_queues; i++) {
1510 allqueues[i] = init_sub_crq_queue(adapter);
1511 if (!allqueues[i]) {
1512 dev_warn(dev, "Couldn't allocate all sub-crqs\n");
1515 registered_queues++;
1518 /* Make sure we were able to register the minimum number of queues */
1519 if (registered_queues <
1520 adapter->min_tx_queues + adapter->min_rx_queues) {
1521 dev_err(dev, "Fatal: Couldn't init min number of sub-crqs\n");
1525 /* Distribute the failed allocated queues*/
1526 for (i = 0; i < total_queues - registered_queues + more ; i++) {
1527 netdev_dbg(adapter->netdev, "Reducing number of queues\n");
1530 if (adapter->req_rx_queues > adapter->min_rx_queues)
1531 adapter->req_rx_queues--;
1536 if (adapter->req_tx_queues > adapter->min_tx_queues)
1537 adapter->req_tx_queues--;
1544 adapter->tx_scrq = kcalloc(adapter->req_tx_queues,
1545 sizeof(*adapter->tx_scrq), GFP_ATOMIC);
1546 if (!adapter->tx_scrq)
1549 for (i = 0; i < adapter->req_tx_queues; i++) {
1550 adapter->tx_scrq[i] = allqueues[i];
1551 adapter->tx_scrq[i]->pool_index = i;
1554 adapter->rx_scrq = kcalloc(adapter->req_rx_queues,
1555 sizeof(*adapter->rx_scrq), GFP_ATOMIC);
1556 if (!adapter->rx_scrq)
1559 for (i = 0; i < adapter->req_rx_queues; i++) {
1560 adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues];
1561 adapter->rx_scrq[i]->scrq_num = i;
1564 memset(&crq, 0, sizeof(crq));
1565 crq.request_capability.first = IBMVNIC_CRQ_CMD;
1566 crq.request_capability.cmd = REQUEST_CAPABILITY;
1568 crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES);
1569 crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues);
1570 ibmvnic_send_crq(adapter, &crq);
1572 crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES);
1573 crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues);
1574 ibmvnic_send_crq(adapter, &crq);
1576 crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES);
1577 crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues);
1578 ibmvnic_send_crq(adapter, &crq);
1580 crq.request_capability.capability =
1581 cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ);
1582 crq.request_capability.number =
1583 cpu_to_be64(adapter->req_tx_entries_per_subcrq);
1584 ibmvnic_send_crq(adapter, &crq);
1586 crq.request_capability.capability =
1587 cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ);
1588 crq.request_capability.number =
1589 cpu_to_be64(adapter->req_rx_add_entries_per_subcrq);
1590 ibmvnic_send_crq(adapter, &crq);
1592 crq.request_capability.capability = cpu_to_be16(REQ_MTU);
1593 crq.request_capability.number = cpu_to_be64(adapter->req_mtu);
1594 ibmvnic_send_crq(adapter, &crq);
1596 if (adapter->netdev->flags & IFF_PROMISC) {
1597 if (adapter->promisc_supported) {
1598 crq.request_capability.capability =
1599 cpu_to_be16(PROMISC_REQUESTED);
1600 crq.request_capability.number = cpu_to_be64(1);
1601 ibmvnic_send_crq(adapter, &crq);
1604 crq.request_capability.capability =
1605 cpu_to_be16(PROMISC_REQUESTED);
1606 crq.request_capability.number = cpu_to_be64(0);
1607 ibmvnic_send_crq(adapter, &crq);
1615 kfree(adapter->tx_scrq);
1616 adapter->tx_scrq = NULL;
1618 for (i = 0; i < registered_queues; i++)
1619 release_sub_crq_queue(adapter, allqueues[i]);
1622 ibmvnic_remove(adapter->vdev);
1625 static int pending_scrq(struct ibmvnic_adapter *adapter,
1626 struct ibmvnic_sub_crq_queue *scrq)
1628 union sub_crq *entry = &scrq->msgs[scrq->cur];
1630 if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP || adapter->closing)
1636 static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter,
1637 struct ibmvnic_sub_crq_queue *scrq)
1639 union sub_crq *entry;
1640 unsigned long flags;
1642 spin_lock_irqsave(&scrq->lock, flags);
1643 entry = &scrq->msgs[scrq->cur];
1644 if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) {
1645 if (++scrq->cur == scrq->size)
1650 spin_unlock_irqrestore(&scrq->lock, flags);
1655 static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter)
1657 struct ibmvnic_crq_queue *queue = &adapter->crq;
1658 union ibmvnic_crq *crq;
1660 crq = &queue->msgs[queue->cur];
1661 if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) {
1662 if (++queue->cur == queue->size)
1671 static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle,
1672 union sub_crq *sub_crq)
1674 unsigned int ua = adapter->vdev->unit_address;
1675 struct device *dev = &adapter->vdev->dev;
1676 u64 *u64_crq = (u64 *)sub_crq;
1679 netdev_dbg(adapter->netdev,
1680 "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n",
1681 (unsigned long int)cpu_to_be64(remote_handle),
1682 (unsigned long int)cpu_to_be64(u64_crq[0]),
1683 (unsigned long int)cpu_to_be64(u64_crq[1]),
1684 (unsigned long int)cpu_to_be64(u64_crq[2]),
1685 (unsigned long int)cpu_to_be64(u64_crq[3]));
1687 /* Make sure the hypervisor sees the complete request */
1690 rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua,
1691 cpu_to_be64(remote_handle),
1692 cpu_to_be64(u64_crq[0]),
1693 cpu_to_be64(u64_crq[1]),
1694 cpu_to_be64(u64_crq[2]),
1695 cpu_to_be64(u64_crq[3]));
1699 dev_warn(dev, "CRQ Queue closed\n");
1700 dev_err(dev, "Send error (rc=%d)\n", rc);
1706 static int send_subcrq_indirect(struct ibmvnic_adapter *adapter,
1707 u64 remote_handle, u64 ioba, u64 num_entries)
1709 unsigned int ua = adapter->vdev->unit_address;
1710 struct device *dev = &adapter->vdev->dev;
1713 /* Make sure the hypervisor sees the complete request */
1715 rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua,
1716 cpu_to_be64(remote_handle),
1721 dev_warn(dev, "CRQ Queue closed\n");
1722 dev_err(dev, "Send (indirect) error (rc=%d)\n", rc);
1728 static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter,
1729 union ibmvnic_crq *crq)
1731 unsigned int ua = adapter->vdev->unit_address;
1732 struct device *dev = &adapter->vdev->dev;
1733 u64 *u64_crq = (u64 *)crq;
1736 netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n",
1737 (unsigned long int)cpu_to_be64(u64_crq[0]),
1738 (unsigned long int)cpu_to_be64(u64_crq[1]));
1740 /* Make sure the hypervisor sees the complete request */
1743 rc = plpar_hcall_norets(H_SEND_CRQ, ua,
1744 cpu_to_be64(u64_crq[0]),
1745 cpu_to_be64(u64_crq[1]));
1749 dev_warn(dev, "CRQ Queue closed\n");
1750 dev_warn(dev, "Send error (rc=%d)\n", rc);
1756 static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter)
1758 union ibmvnic_crq crq;
1760 memset(&crq, 0, sizeof(crq));
1761 crq.generic.first = IBMVNIC_CRQ_INIT_CMD;
1762 crq.generic.cmd = IBMVNIC_CRQ_INIT;
1763 netdev_dbg(adapter->netdev, "Sending CRQ init\n");
1765 return ibmvnic_send_crq(adapter, &crq);
1768 static int ibmvnic_send_crq_init_complete(struct ibmvnic_adapter *adapter)
1770 union ibmvnic_crq crq;
1772 memset(&crq, 0, sizeof(crq));
1773 crq.generic.first = IBMVNIC_CRQ_INIT_CMD;
1774 crq.generic.cmd = IBMVNIC_CRQ_INIT_COMPLETE;
1775 netdev_dbg(adapter->netdev, "Sending CRQ init complete\n");
1777 return ibmvnic_send_crq(adapter, &crq);
1780 static int send_version_xchg(struct ibmvnic_adapter *adapter)
1782 union ibmvnic_crq crq;
1784 memset(&crq, 0, sizeof(crq));
1785 crq.version_exchange.first = IBMVNIC_CRQ_CMD;
1786 crq.version_exchange.cmd = VERSION_EXCHANGE;
1787 crq.version_exchange.version = cpu_to_be16(ibmvnic_version);
1789 return ibmvnic_send_crq(adapter, &crq);
1792 static void send_login(struct ibmvnic_adapter *adapter)
1794 struct ibmvnic_login_rsp_buffer *login_rsp_buffer;
1795 struct ibmvnic_login_buffer *login_buffer;
1796 struct ibmvnic_inflight_cmd *inflight_cmd;
1797 struct device *dev = &adapter->vdev->dev;
1798 dma_addr_t rsp_buffer_token;
1799 dma_addr_t buffer_token;
1800 size_t rsp_buffer_size;
1801 union ibmvnic_crq crq;
1802 unsigned long flags;
1809 sizeof(struct ibmvnic_login_buffer) +
1810 sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues);
1812 login_buffer = kmalloc(buffer_size, GFP_ATOMIC);
1814 goto buf_alloc_failed;
1816 buffer_token = dma_map_single(dev, login_buffer, buffer_size,
1818 if (dma_mapping_error(dev, buffer_token)) {
1819 dev_err(dev, "Couldn't map login buffer\n");
1820 goto buf_map_failed;
1823 rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) +
1824 sizeof(u64) * adapter->req_tx_queues +
1825 sizeof(u64) * adapter->req_rx_queues +
1826 sizeof(u64) * adapter->req_rx_queues +
1827 sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS;
1829 login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC);
1830 if (!login_rsp_buffer)
1831 goto buf_rsp_alloc_failed;
1833 rsp_buffer_token = dma_map_single(dev, login_rsp_buffer,
1834 rsp_buffer_size, DMA_FROM_DEVICE);
1835 if (dma_mapping_error(dev, rsp_buffer_token)) {
1836 dev_err(dev, "Couldn't map login rsp buffer\n");
1837 goto buf_rsp_map_failed;
1839 inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC);
1840 if (!inflight_cmd) {
1841 dev_err(dev, "Couldn't allocate inflight_cmd\n");
1842 goto inflight_alloc_failed;
1844 adapter->login_buf = login_buffer;
1845 adapter->login_buf_token = buffer_token;
1846 adapter->login_buf_sz = buffer_size;
1847 adapter->login_rsp_buf = login_rsp_buffer;
1848 adapter->login_rsp_buf_token = rsp_buffer_token;
1849 adapter->login_rsp_buf_sz = rsp_buffer_size;
1851 login_buffer->len = cpu_to_be32(buffer_size);
1852 login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB);
1853 login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues);
1854 login_buffer->off_txcomp_subcrqs =
1855 cpu_to_be32(sizeof(struct ibmvnic_login_buffer));
1856 login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues);
1857 login_buffer->off_rxcomp_subcrqs =
1858 cpu_to_be32(sizeof(struct ibmvnic_login_buffer) +
1859 sizeof(u64) * adapter->req_tx_queues);
1860 login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token);
1861 login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size);
1863 tx_list_p = (__be64 *)((char *)login_buffer +
1864 sizeof(struct ibmvnic_login_buffer));
1865 rx_list_p = (__be64 *)((char *)login_buffer +
1866 sizeof(struct ibmvnic_login_buffer) +
1867 sizeof(u64) * adapter->req_tx_queues);
1869 for (i = 0; i < adapter->req_tx_queues; i++) {
1870 if (adapter->tx_scrq[i]) {
1871 tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]->
1876 for (i = 0; i < adapter->req_rx_queues; i++) {
1877 if (adapter->rx_scrq[i]) {
1878 rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]->
1883 netdev_dbg(adapter->netdev, "Login Buffer:\n");
1884 for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) {
1885 netdev_dbg(adapter->netdev, "%016lx\n",
1886 ((unsigned long int *)(adapter->login_buf))[i]);
1889 memset(&crq, 0, sizeof(crq));
1890 crq.login.first = IBMVNIC_CRQ_CMD;
1891 crq.login.cmd = LOGIN;
1892 crq.login.ioba = cpu_to_be32(buffer_token);
1893 crq.login.len = cpu_to_be32(buffer_size);
1895 memcpy(&inflight_cmd->crq, &crq, sizeof(crq));
1897 spin_lock_irqsave(&adapter->inflight_lock, flags);
1898 list_add_tail(&inflight_cmd->list, &adapter->inflight);
1899 spin_unlock_irqrestore(&adapter->inflight_lock, flags);
1901 ibmvnic_send_crq(adapter, &crq);
1905 inflight_alloc_failed:
1906 dma_unmap_single(dev, rsp_buffer_token, rsp_buffer_size,
1909 kfree(login_rsp_buffer);
1910 buf_rsp_alloc_failed:
1911 dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE);
1913 kfree(login_buffer);
1918 static void send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr,
1921 union ibmvnic_crq crq;
1923 memset(&crq, 0, sizeof(crq));
1924 crq.request_map.first = IBMVNIC_CRQ_CMD;
1925 crq.request_map.cmd = REQUEST_MAP;
1926 crq.request_map.map_id = map_id;
1927 crq.request_map.ioba = cpu_to_be32(addr);
1928 crq.request_map.len = cpu_to_be32(len);
1929 ibmvnic_send_crq(adapter, &crq);
1932 static void send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id)
1934 union ibmvnic_crq crq;
1936 memset(&crq, 0, sizeof(crq));
1937 crq.request_unmap.first = IBMVNIC_CRQ_CMD;
1938 crq.request_unmap.cmd = REQUEST_UNMAP;
1939 crq.request_unmap.map_id = map_id;
1940 ibmvnic_send_crq(adapter, &crq);
1943 static void send_map_query(struct ibmvnic_adapter *adapter)
1945 union ibmvnic_crq crq;
1947 memset(&crq, 0, sizeof(crq));
1948 crq.query_map.first = IBMVNIC_CRQ_CMD;
1949 crq.query_map.cmd = QUERY_MAP;
1950 ibmvnic_send_crq(adapter, &crq);
1953 /* Send a series of CRQs requesting various capabilities of the VNIC server */
1954 static void send_cap_queries(struct ibmvnic_adapter *adapter)
1956 union ibmvnic_crq crq;
1958 atomic_set(&adapter->running_cap_queries, 0);
1959 memset(&crq, 0, sizeof(crq));
1960 crq.query_capability.first = IBMVNIC_CRQ_CMD;
1961 crq.query_capability.cmd = QUERY_CAPABILITY;
1963 crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES);
1964 atomic_inc(&adapter->running_cap_queries);
1965 ibmvnic_send_crq(adapter, &crq);
1967 crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES);
1968 atomic_inc(&adapter->running_cap_queries);
1969 ibmvnic_send_crq(adapter, &crq);
1971 crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES);
1972 atomic_inc(&adapter->running_cap_queries);
1973 ibmvnic_send_crq(adapter, &crq);
1975 crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES);
1976 atomic_inc(&adapter->running_cap_queries);
1977 ibmvnic_send_crq(adapter, &crq);
1979 crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES);
1980 atomic_inc(&adapter->running_cap_queries);
1981 ibmvnic_send_crq(adapter, &crq);
1983 crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES);
1984 atomic_inc(&adapter->running_cap_queries);
1985 ibmvnic_send_crq(adapter, &crq);
1987 crq.query_capability.capability =
1988 cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ);
1989 atomic_inc(&adapter->running_cap_queries);
1990 ibmvnic_send_crq(adapter, &crq);
1992 crq.query_capability.capability =
1993 cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ);
1994 atomic_inc(&adapter->running_cap_queries);
1995 ibmvnic_send_crq(adapter, &crq);
1997 crq.query_capability.capability =
1998 cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ);
1999 atomic_inc(&adapter->running_cap_queries);
2000 ibmvnic_send_crq(adapter, &crq);
2002 crq.query_capability.capability =
2003 cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ);
2004 atomic_inc(&adapter->running_cap_queries);
2005 ibmvnic_send_crq(adapter, &crq);
2007 crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD);
2008 atomic_inc(&adapter->running_cap_queries);
2009 ibmvnic_send_crq(adapter, &crq);
2011 crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED);
2012 atomic_inc(&adapter->running_cap_queries);
2013 ibmvnic_send_crq(adapter, &crq);
2015 crq.query_capability.capability = cpu_to_be16(MIN_MTU);
2016 atomic_inc(&adapter->running_cap_queries);
2017 ibmvnic_send_crq(adapter, &crq);
2019 crq.query_capability.capability = cpu_to_be16(MAX_MTU);
2020 atomic_inc(&adapter->running_cap_queries);
2021 ibmvnic_send_crq(adapter, &crq);
2023 crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS);
2024 atomic_inc(&adapter->running_cap_queries);
2025 ibmvnic_send_crq(adapter, &crq);
2027 crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION);
2028 atomic_inc(&adapter->running_cap_queries);
2029 ibmvnic_send_crq(adapter, &crq);
2031 crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES);
2032 atomic_inc(&adapter->running_cap_queries);
2033 ibmvnic_send_crq(adapter, &crq);
2035 crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED);
2036 atomic_inc(&adapter->running_cap_queries);
2037 ibmvnic_send_crq(adapter, &crq);
2039 crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES);
2040 atomic_inc(&adapter->running_cap_queries);
2041 ibmvnic_send_crq(adapter, &crq);
2043 crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES);
2044 atomic_inc(&adapter->running_cap_queries);
2045 ibmvnic_send_crq(adapter, &crq);
2047 crq.query_capability.capability =
2048 cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q);
2049 atomic_inc(&adapter->running_cap_queries);
2050 ibmvnic_send_crq(adapter, &crq);
2052 crq.query_capability.capability =
2053 cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ);
2054 atomic_inc(&adapter->running_cap_queries);
2055 ibmvnic_send_crq(adapter, &crq);
2057 crq.query_capability.capability =
2058 cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ);
2059 atomic_inc(&adapter->running_cap_queries);
2060 ibmvnic_send_crq(adapter, &crq);
2062 crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ);
2063 atomic_inc(&adapter->running_cap_queries);
2064 ibmvnic_send_crq(adapter, &crq);
2067 static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter)
2069 struct device *dev = &adapter->vdev->dev;
2070 struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf;
2071 union ibmvnic_crq crq;
2074 dma_unmap_single(dev, adapter->ip_offload_tok,
2075 sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE);
2077 netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n");
2078 for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++)
2079 netdev_dbg(adapter->netdev, "%016lx\n",
2080 ((unsigned long int *)(buf))[i]);
2082 netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum);
2083 netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum);
2084 netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n",
2085 buf->tcp_ipv4_chksum);
2086 netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n",
2087 buf->tcp_ipv6_chksum);
2088 netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n",
2089 buf->udp_ipv4_chksum);
2090 netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n",
2091 buf->udp_ipv6_chksum);
2092 netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n",
2093 buf->large_tx_ipv4);
2094 netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n",
2095 buf->large_tx_ipv6);
2096 netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n",
2097 buf->large_rx_ipv4);
2098 netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n",
2099 buf->large_rx_ipv6);
2100 netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n",
2101 buf->max_ipv4_header_size);
2102 netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n",
2103 buf->max_ipv6_header_size);
2104 netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n",
2105 buf->max_tcp_header_size);
2106 netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n",
2107 buf->max_udp_header_size);
2108 netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n",
2109 buf->max_large_tx_size);
2110 netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n",
2111 buf->max_large_rx_size);
2112 netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n",
2113 buf->ipv6_extension_header);
2114 netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n",
2115 buf->tcp_pseudosum_req);
2116 netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n",
2117 buf->num_ipv6_ext_headers);
2118 netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n",
2119 buf->off_ipv6_ext_headers);
2121 adapter->ip_offload_ctrl_tok =
2122 dma_map_single(dev, &adapter->ip_offload_ctrl,
2123 sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE);
2125 if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) {
2126 dev_err(dev, "Couldn't map ip offload control buffer\n");
2130 adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB);
2131 adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum;
2132 adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum;
2133 adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum;
2134 adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum;
2136 /* large_tx/rx disabled for now, additional features needed */
2137 adapter->ip_offload_ctrl.large_tx_ipv4 = 0;
2138 adapter->ip_offload_ctrl.large_tx_ipv6 = 0;
2139 adapter->ip_offload_ctrl.large_rx_ipv4 = 0;
2140 adapter->ip_offload_ctrl.large_rx_ipv6 = 0;
2142 adapter->netdev->features = NETIF_F_GSO;
2144 if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum)
2145 adapter->netdev->features |= NETIF_F_IP_CSUM;
2147 if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum)
2148 adapter->netdev->features |= NETIF_F_IPV6_CSUM;
2150 if ((adapter->netdev->features &
2151 (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)))
2152 adapter->netdev->features |= NETIF_F_RXCSUM;
2154 memset(&crq, 0, sizeof(crq));
2155 crq.control_ip_offload.first = IBMVNIC_CRQ_CMD;
2156 crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD;
2157 crq.control_ip_offload.len =
2158 cpu_to_be32(sizeof(adapter->ip_offload_ctrl));
2159 crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok);
2160 ibmvnic_send_crq(adapter, &crq);
2163 static void handle_error_info_rsp(union ibmvnic_crq *crq,
2164 struct ibmvnic_adapter *adapter)
2166 struct device *dev = &adapter->vdev->dev;
2167 struct ibmvnic_error_buff *error_buff, *tmp;
2168 unsigned long flags;
2172 if (!crq->request_error_rsp.rc.code) {
2173 dev_info(dev, "Request Error Rsp returned with rc=%x\n",
2174 crq->request_error_rsp.rc.code);
2178 spin_lock_irqsave(&adapter->error_list_lock, flags);
2179 list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list)
2180 if (error_buff->error_id == crq->request_error_rsp.error_id) {
2182 list_del(&error_buff->list);
2185 spin_unlock_irqrestore(&adapter->error_list_lock, flags);
2188 dev_err(dev, "Couldn't find error id %x\n",
2189 be32_to_cpu(crq->request_error_rsp.error_id));
2193 dev_err(dev, "Detailed info for error id %x:",
2194 be32_to_cpu(crq->request_error_rsp.error_id));
2196 for (i = 0; i < error_buff->len; i++) {
2197 pr_cont("%02x", (int)error_buff->buff[i]);
2203 dma_unmap_single(dev, error_buff->dma, error_buff->len,
2205 kfree(error_buff->buff);
2209 static void handle_dump_size_rsp(union ibmvnic_crq *crq,
2210 struct ibmvnic_adapter *adapter)
2212 int len = be32_to_cpu(crq->request_dump_size_rsp.len);
2213 struct ibmvnic_inflight_cmd *inflight_cmd;
2214 struct device *dev = &adapter->vdev->dev;
2215 union ibmvnic_crq newcrq;
2216 unsigned long flags;
2218 /* allocate and map buffer */
2219 adapter->dump_data = kmalloc(len, GFP_KERNEL);
2220 if (!adapter->dump_data) {
2221 complete(&adapter->fw_done);
2225 adapter->dump_data_token = dma_map_single(dev, adapter->dump_data, len,
2228 if (dma_mapping_error(dev, adapter->dump_data_token)) {
2229 if (!firmware_has_feature(FW_FEATURE_CMO))
2230 dev_err(dev, "Couldn't map dump data\n");
2231 kfree(adapter->dump_data);
2232 complete(&adapter->fw_done);
2236 inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC);
2237 if (!inflight_cmd) {
2238 dma_unmap_single(dev, adapter->dump_data_token, len,
2240 kfree(adapter->dump_data);
2241 complete(&adapter->fw_done);
2245 memset(&newcrq, 0, sizeof(newcrq));
2246 newcrq.request_dump.first = IBMVNIC_CRQ_CMD;
2247 newcrq.request_dump.cmd = REQUEST_DUMP;
2248 newcrq.request_dump.ioba = cpu_to_be32(adapter->dump_data_token);
2249 newcrq.request_dump.len = cpu_to_be32(adapter->dump_data_size);
2251 memcpy(&inflight_cmd->crq, &newcrq, sizeof(newcrq));
2253 spin_lock_irqsave(&adapter->inflight_lock, flags);
2254 list_add_tail(&inflight_cmd->list, &adapter->inflight);
2255 spin_unlock_irqrestore(&adapter->inflight_lock, flags);
2257 ibmvnic_send_crq(adapter, &newcrq);
2260 static void handle_error_indication(union ibmvnic_crq *crq,
2261 struct ibmvnic_adapter *adapter)
2263 int detail_len = be32_to_cpu(crq->error_indication.detail_error_sz);
2264 struct ibmvnic_inflight_cmd *inflight_cmd;
2265 struct device *dev = &adapter->vdev->dev;
2266 struct ibmvnic_error_buff *error_buff;
2267 union ibmvnic_crq new_crq;
2268 unsigned long flags;
2270 dev_err(dev, "Firmware reports %serror id %x, cause %d\n",
2271 crq->error_indication.
2272 flags & IBMVNIC_FATAL_ERROR ? "FATAL " : "",
2273 be32_to_cpu(crq->error_indication.error_id),
2274 be16_to_cpu(crq->error_indication.error_cause));
2276 error_buff = kmalloc(sizeof(*error_buff), GFP_ATOMIC);
2280 error_buff->buff = kmalloc(detail_len, GFP_ATOMIC);
2281 if (!error_buff->buff) {
2286 error_buff->dma = dma_map_single(dev, error_buff->buff, detail_len,
2288 if (dma_mapping_error(dev, error_buff->dma)) {
2289 if (!firmware_has_feature(FW_FEATURE_CMO))
2290 dev_err(dev, "Couldn't map error buffer\n");
2291 kfree(error_buff->buff);
2296 inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC);
2297 if (!inflight_cmd) {
2298 dma_unmap_single(dev, error_buff->dma, detail_len,
2300 kfree(error_buff->buff);
2305 error_buff->len = detail_len;
2306 error_buff->error_id = crq->error_indication.error_id;
2308 spin_lock_irqsave(&adapter->error_list_lock, flags);
2309 list_add_tail(&error_buff->list, &adapter->errors);
2310 spin_unlock_irqrestore(&adapter->error_list_lock, flags);
2312 memset(&new_crq, 0, sizeof(new_crq));
2313 new_crq.request_error_info.first = IBMVNIC_CRQ_CMD;
2314 new_crq.request_error_info.cmd = REQUEST_ERROR_INFO;
2315 new_crq.request_error_info.ioba = cpu_to_be32(error_buff->dma);
2316 new_crq.request_error_info.len = cpu_to_be32(detail_len);
2317 new_crq.request_error_info.error_id = crq->error_indication.error_id;
2319 memcpy(&inflight_cmd->crq, &crq, sizeof(crq));
2321 spin_lock_irqsave(&adapter->inflight_lock, flags);
2322 list_add_tail(&inflight_cmd->list, &adapter->inflight);
2323 spin_unlock_irqrestore(&adapter->inflight_lock, flags);
2325 ibmvnic_send_crq(adapter, &new_crq);
2328 static void handle_change_mac_rsp(union ibmvnic_crq *crq,
2329 struct ibmvnic_adapter *adapter)
2331 struct net_device *netdev = adapter->netdev;
2332 struct device *dev = &adapter->vdev->dev;
2335 rc = crq->change_mac_addr_rsp.rc.code;
2337 dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc);
2340 memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0],
2344 static void handle_request_cap_rsp(union ibmvnic_crq *crq,
2345 struct ibmvnic_adapter *adapter)
2347 struct device *dev = &adapter->vdev->dev;
2351 switch (be16_to_cpu(crq->request_capability_rsp.capability)) {
2353 req_value = &adapter->req_tx_queues;
2357 req_value = &adapter->req_rx_queues;
2360 case REQ_RX_ADD_QUEUES:
2361 req_value = &adapter->req_rx_add_queues;
2364 case REQ_TX_ENTRIES_PER_SUBCRQ:
2365 req_value = &adapter->req_tx_entries_per_subcrq;
2366 name = "tx_entries_per_subcrq";
2368 case REQ_RX_ADD_ENTRIES_PER_SUBCRQ:
2369 req_value = &adapter->req_rx_add_entries_per_subcrq;
2370 name = "rx_add_entries_per_subcrq";
2373 req_value = &adapter->req_mtu;
2376 case PROMISC_REQUESTED:
2377 req_value = &adapter->promisc;
2381 dev_err(dev, "Got invalid cap request rsp %d\n",
2382 crq->request_capability.capability);
2386 switch (crq->request_capability_rsp.rc.code) {
2389 case PARTIALSUCCESS:
2390 dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n",
2392 (long int)be64_to_cpu(crq->request_capability_rsp.
2394 release_sub_crqs_no_irqs(adapter);
2395 *req_value = be64_to_cpu(crq->request_capability_rsp.number);
2396 init_sub_crqs(adapter, 1);
2399 dev_err(dev, "Error %d in request cap rsp\n",
2400 crq->request_capability_rsp.rc.code);
2404 /* Done receiving requested capabilities, query IP offload support */
2405 if (++adapter->requested_caps == 7) {
2406 union ibmvnic_crq newcrq;
2407 int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer);
2408 struct ibmvnic_query_ip_offload_buffer *ip_offload_buf =
2409 &adapter->ip_offload_buf;
2411 adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf,
2415 if (dma_mapping_error(dev, adapter->ip_offload_tok)) {
2416 if (!firmware_has_feature(FW_FEATURE_CMO))
2417 dev_err(dev, "Couldn't map offload buffer\n");
2421 memset(&newcrq, 0, sizeof(newcrq));
2422 newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD;
2423 newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD;
2424 newcrq.query_ip_offload.len = cpu_to_be32(buf_sz);
2425 newcrq.query_ip_offload.ioba =
2426 cpu_to_be32(adapter->ip_offload_tok);
2428 ibmvnic_send_crq(adapter, &newcrq);
2432 static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq,
2433 struct ibmvnic_adapter *adapter)
2435 struct device *dev = &adapter->vdev->dev;
2436 struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf;
2437 struct ibmvnic_login_buffer *login = adapter->login_buf;
2438 union ibmvnic_crq crq;
2441 dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz,
2443 dma_unmap_single(dev, adapter->login_rsp_buf_token,
2444 adapter->login_rsp_buf_sz, DMA_BIDIRECTIONAL);
2446 /* If the number of queues requested can't be allocated by the
2447 * server, the login response will return with code 1. We will need
2448 * to resend the login buffer with fewer queues requested.
2450 if (login_rsp_crq->generic.rc.code) {
2451 adapter->renegotiate = true;
2452 complete(&adapter->init_done);
2456 netdev_dbg(adapter->netdev, "Login Response Buffer:\n");
2457 for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) {
2458 netdev_dbg(adapter->netdev, "%016lx\n",
2459 ((unsigned long int *)(adapter->login_rsp_buf))[i]);
2463 if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs ||
2464 (be32_to_cpu(login->num_rxcomp_subcrqs) *
2465 adapter->req_rx_add_queues !=
2466 be32_to_cpu(login_rsp->num_rxadd_subcrqs))) {
2467 dev_err(dev, "FATAL: Inconsistent login and login rsp\n");
2468 ibmvnic_remove(adapter->vdev);
2471 complete(&adapter->init_done);
2473 memset(&crq, 0, sizeof(crq));
2474 crq.request_ras_comp_num.first = IBMVNIC_CRQ_CMD;
2475 crq.request_ras_comp_num.cmd = REQUEST_RAS_COMP_NUM;
2476 ibmvnic_send_crq(adapter, &crq);
2481 static void handle_request_map_rsp(union ibmvnic_crq *crq,
2482 struct ibmvnic_adapter *adapter)
2484 struct device *dev = &adapter->vdev->dev;
2485 u8 map_id = crq->request_map_rsp.map_id;
2491 tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
2492 rx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
2494 rc = crq->request_map_rsp.rc.code;
2496 dev_err(dev, "Error %ld in REQUEST_MAP_RSP\n", rc);
2498 /* need to find and zero tx/rx_pool map_id */
2499 for (i = 0; i < tx_subcrqs; i++) {
2500 if (adapter->tx_pool[i].long_term_buff.map_id == map_id)
2501 adapter->tx_pool[i].long_term_buff.map_id = 0;
2503 for (i = 0; i < rx_subcrqs; i++) {
2504 if (adapter->rx_pool[i].long_term_buff.map_id == map_id)
2505 adapter->rx_pool[i].long_term_buff.map_id = 0;
2508 complete(&adapter->fw_done);
2511 static void handle_request_unmap_rsp(union ibmvnic_crq *crq,
2512 struct ibmvnic_adapter *adapter)
2514 struct device *dev = &adapter->vdev->dev;
2517 rc = crq->request_unmap_rsp.rc.code;
2519 dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc);
2522 static void handle_query_map_rsp(union ibmvnic_crq *crq,
2523 struct ibmvnic_adapter *adapter)
2525 struct net_device *netdev = adapter->netdev;
2526 struct device *dev = &adapter->vdev->dev;
2529 rc = crq->query_map_rsp.rc.code;
2531 dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc);
2534 netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n",
2535 crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages,
2536 crq->query_map_rsp.free_pages);
2539 static void handle_query_cap_rsp(union ibmvnic_crq *crq,
2540 struct ibmvnic_adapter *adapter)
2542 struct net_device *netdev = adapter->netdev;
2543 struct device *dev = &adapter->vdev->dev;
2546 atomic_dec(&adapter->running_cap_queries);
2547 netdev_dbg(netdev, "Outstanding queries: %d\n",
2548 atomic_read(&adapter->running_cap_queries));
2549 rc = crq->query_capability.rc.code;
2551 dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc);
2555 switch (be16_to_cpu(crq->query_capability.capability)) {
2557 adapter->min_tx_queues =
2558 be64_to_cpu(crq->query_capability.number);
2559 netdev_dbg(netdev, "min_tx_queues = %lld\n",
2560 adapter->min_tx_queues);
2563 adapter->min_rx_queues =
2564 be64_to_cpu(crq->query_capability.number);
2565 netdev_dbg(netdev, "min_rx_queues = %lld\n",
2566 adapter->min_rx_queues);
2568 case MIN_RX_ADD_QUEUES:
2569 adapter->min_rx_add_queues =
2570 be64_to_cpu(crq->query_capability.number);
2571 netdev_dbg(netdev, "min_rx_add_queues = %lld\n",
2572 adapter->min_rx_add_queues);
2575 adapter->max_tx_queues =
2576 be64_to_cpu(crq->query_capability.number);
2577 netdev_dbg(netdev, "max_tx_queues = %lld\n",
2578 adapter->max_tx_queues);
2581 adapter->max_rx_queues =
2582 be64_to_cpu(crq->query_capability.number);
2583 netdev_dbg(netdev, "max_rx_queues = %lld\n",
2584 adapter->max_rx_queues);
2586 case MAX_RX_ADD_QUEUES:
2587 adapter->max_rx_add_queues =
2588 be64_to_cpu(crq->query_capability.number);
2589 netdev_dbg(netdev, "max_rx_add_queues = %lld\n",
2590 adapter->max_rx_add_queues);
2592 case MIN_TX_ENTRIES_PER_SUBCRQ:
2593 adapter->min_tx_entries_per_subcrq =
2594 be64_to_cpu(crq->query_capability.number);
2595 netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n",
2596 adapter->min_tx_entries_per_subcrq);
2598 case MIN_RX_ADD_ENTRIES_PER_SUBCRQ:
2599 adapter->min_rx_add_entries_per_subcrq =
2600 be64_to_cpu(crq->query_capability.number);
2601 netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n",
2602 adapter->min_rx_add_entries_per_subcrq);
2604 case MAX_TX_ENTRIES_PER_SUBCRQ:
2605 adapter->max_tx_entries_per_subcrq =
2606 be64_to_cpu(crq->query_capability.number);
2607 netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n",
2608 adapter->max_tx_entries_per_subcrq);
2610 case MAX_RX_ADD_ENTRIES_PER_SUBCRQ:
2611 adapter->max_rx_add_entries_per_subcrq =
2612 be64_to_cpu(crq->query_capability.number);
2613 netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n",
2614 adapter->max_rx_add_entries_per_subcrq);
2616 case TCP_IP_OFFLOAD:
2617 adapter->tcp_ip_offload =
2618 be64_to_cpu(crq->query_capability.number);
2619 netdev_dbg(netdev, "tcp_ip_offload = %lld\n",
2620 adapter->tcp_ip_offload);
2622 case PROMISC_SUPPORTED:
2623 adapter->promisc_supported =
2624 be64_to_cpu(crq->query_capability.number);
2625 netdev_dbg(netdev, "promisc_supported = %lld\n",
2626 adapter->promisc_supported);
2629 adapter->min_mtu = be64_to_cpu(crq->query_capability.number);
2630 netdev->min_mtu = adapter->min_mtu - ETH_HLEN;
2631 netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu);
2634 adapter->max_mtu = be64_to_cpu(crq->query_capability.number);
2635 netdev->max_mtu = adapter->max_mtu - ETH_HLEN;
2636 netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu);
2638 case MAX_MULTICAST_FILTERS:
2639 adapter->max_multicast_filters =
2640 be64_to_cpu(crq->query_capability.number);
2641 netdev_dbg(netdev, "max_multicast_filters = %lld\n",
2642 adapter->max_multicast_filters);
2644 case VLAN_HEADER_INSERTION:
2645 adapter->vlan_header_insertion =
2646 be64_to_cpu(crq->query_capability.number);
2647 if (adapter->vlan_header_insertion)
2648 netdev->features |= NETIF_F_HW_VLAN_STAG_TX;
2649 netdev_dbg(netdev, "vlan_header_insertion = %lld\n",
2650 adapter->vlan_header_insertion);
2652 case MAX_TX_SG_ENTRIES:
2653 adapter->max_tx_sg_entries =
2654 be64_to_cpu(crq->query_capability.number);
2655 netdev_dbg(netdev, "max_tx_sg_entries = %lld\n",
2656 adapter->max_tx_sg_entries);
2658 case RX_SG_SUPPORTED:
2659 adapter->rx_sg_supported =
2660 be64_to_cpu(crq->query_capability.number);
2661 netdev_dbg(netdev, "rx_sg_supported = %lld\n",
2662 adapter->rx_sg_supported);
2664 case OPT_TX_COMP_SUB_QUEUES:
2665 adapter->opt_tx_comp_sub_queues =
2666 be64_to_cpu(crq->query_capability.number);
2667 netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n",
2668 adapter->opt_tx_comp_sub_queues);
2670 case OPT_RX_COMP_QUEUES:
2671 adapter->opt_rx_comp_queues =
2672 be64_to_cpu(crq->query_capability.number);
2673 netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n",
2674 adapter->opt_rx_comp_queues);
2676 case OPT_RX_BUFADD_Q_PER_RX_COMP_Q:
2677 adapter->opt_rx_bufadd_q_per_rx_comp_q =
2678 be64_to_cpu(crq->query_capability.number);
2679 netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n",
2680 adapter->opt_rx_bufadd_q_per_rx_comp_q);
2682 case OPT_TX_ENTRIES_PER_SUBCRQ:
2683 adapter->opt_tx_entries_per_subcrq =
2684 be64_to_cpu(crq->query_capability.number);
2685 netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n",
2686 adapter->opt_tx_entries_per_subcrq);
2688 case OPT_RXBA_ENTRIES_PER_SUBCRQ:
2689 adapter->opt_rxba_entries_per_subcrq =
2690 be64_to_cpu(crq->query_capability.number);
2691 netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n",
2692 adapter->opt_rxba_entries_per_subcrq);
2694 case TX_RX_DESC_REQ:
2695 adapter->tx_rx_desc_req = crq->query_capability.number;
2696 netdev_dbg(netdev, "tx_rx_desc_req = %llx\n",
2697 adapter->tx_rx_desc_req);
2701 netdev_err(netdev, "Got invalid cap rsp %d\n",
2702 crq->query_capability.capability);
2706 if (atomic_read(&adapter->running_cap_queries) == 0)
2707 init_sub_crqs(adapter, 0);
2708 /* We're done querying the capabilities, initialize sub-crqs */
2711 static void handle_control_ras_rsp(union ibmvnic_crq *crq,
2712 struct ibmvnic_adapter *adapter)
2714 u8 correlator = crq->control_ras_rsp.correlator;
2715 struct device *dev = &adapter->vdev->dev;
2719 if (crq->control_ras_rsp.rc.code) {
2720 dev_warn(dev, "Control ras failed rc=%d\n",
2721 crq->control_ras_rsp.rc.code);
2725 for (i = 0; i < adapter->ras_comp_num; i++) {
2726 if (adapter->ras_comps[i].correlator == correlator) {
2733 dev_warn(dev, "Correlator not found on control_ras_rsp\n");
2737 switch (crq->control_ras_rsp.op) {
2738 case IBMVNIC_TRACE_LEVEL:
2739 adapter->ras_comps[i].trace_level = crq->control_ras.level;
2741 case IBMVNIC_ERROR_LEVEL:
2742 adapter->ras_comps[i].error_check_level =
2743 crq->control_ras.level;
2745 case IBMVNIC_TRACE_PAUSE:
2746 adapter->ras_comp_int[i].paused = 1;
2748 case IBMVNIC_TRACE_RESUME:
2749 adapter->ras_comp_int[i].paused = 0;
2751 case IBMVNIC_TRACE_ON:
2752 adapter->ras_comps[i].trace_on = 1;
2754 case IBMVNIC_TRACE_OFF:
2755 adapter->ras_comps[i].trace_on = 0;
2757 case IBMVNIC_CHG_TRACE_BUFF_SZ:
2758 /* trace_buff_sz is 3 bytes, stuff it into an int */
2759 ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[0] = 0;
2760 ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[1] =
2761 crq->control_ras_rsp.trace_buff_sz[0];
2762 ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[2] =
2763 crq->control_ras_rsp.trace_buff_sz[1];
2764 ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[3] =
2765 crq->control_ras_rsp.trace_buff_sz[2];
2768 dev_err(dev, "invalid op %d on control_ras_rsp",
2769 crq->control_ras_rsp.op);
2773 static ssize_t trace_read(struct file *file, char __user *user_buf, size_t len,
2776 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2777 struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2778 struct device *dev = &adapter->vdev->dev;
2779 struct ibmvnic_fw_trace_entry *trace;
2780 int num = ras_comp_int->num;
2781 union ibmvnic_crq crq;
2782 dma_addr_t trace_tok;
2784 if (*ppos >= be32_to_cpu(adapter->ras_comps[num].trace_buff_size))
2788 dma_alloc_coherent(dev,
2789 be32_to_cpu(adapter->ras_comps[num].
2790 trace_buff_size), &trace_tok,
2793 dev_err(dev, "Couldn't alloc trace buffer\n");
2797 memset(&crq, 0, sizeof(crq));
2798 crq.collect_fw_trace.first = IBMVNIC_CRQ_CMD;
2799 crq.collect_fw_trace.cmd = COLLECT_FW_TRACE;
2800 crq.collect_fw_trace.correlator = adapter->ras_comps[num].correlator;
2801 crq.collect_fw_trace.ioba = cpu_to_be32(trace_tok);
2802 crq.collect_fw_trace.len = adapter->ras_comps[num].trace_buff_size;
2804 init_completion(&adapter->fw_done);
2805 ibmvnic_send_crq(adapter, &crq);
2806 wait_for_completion(&adapter->fw_done);
2808 if (*ppos + len > be32_to_cpu(adapter->ras_comps[num].trace_buff_size))
2810 be32_to_cpu(adapter->ras_comps[num].trace_buff_size) -
2813 copy_to_user(user_buf, &((u8 *)trace)[*ppos], len);
2815 dma_free_coherent(dev,
2816 be32_to_cpu(adapter->ras_comps[num].trace_buff_size),
2822 static const struct file_operations trace_ops = {
2823 .owner = THIS_MODULE,
2824 .open = simple_open,
2828 static ssize_t paused_read(struct file *file, char __user *user_buf, size_t len,
2831 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2832 struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2833 int num = ras_comp_int->num;
2834 char buff[5]; /* 1 or 0 plus \n and \0 */
2837 size = sprintf(buff, "%d\n", adapter->ras_comp_int[num].paused);
2842 copy_to_user(user_buf, buff, size);
2847 static ssize_t paused_write(struct file *file, const char __user *user_buf,
2848 size_t len, loff_t *ppos)
2850 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2851 struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2852 int num = ras_comp_int->num;
2853 union ibmvnic_crq crq;
2855 char buff[9]; /* decimal max int plus \n and \0 */
2857 copy_from_user(buff, user_buf, sizeof(buff));
2858 val = kstrtoul(buff, 10, NULL);
2860 adapter->ras_comp_int[num].paused = val ? 1 : 0;
2862 memset(&crq, 0, sizeof(crq));
2863 crq.control_ras.first = IBMVNIC_CRQ_CMD;
2864 crq.control_ras.cmd = CONTROL_RAS;
2865 crq.control_ras.correlator = adapter->ras_comps[num].correlator;
2866 crq.control_ras.op = val ? IBMVNIC_TRACE_PAUSE : IBMVNIC_TRACE_RESUME;
2867 ibmvnic_send_crq(adapter, &crq);
2872 static const struct file_operations paused_ops = {
2873 .owner = THIS_MODULE,
2874 .open = simple_open,
2875 .read = paused_read,
2876 .write = paused_write,
2879 static ssize_t tracing_read(struct file *file, char __user *user_buf,
2880 size_t len, loff_t *ppos)
2882 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2883 struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2884 int num = ras_comp_int->num;
2885 char buff[5]; /* 1 or 0 plus \n and \0 */
2888 size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_on);
2893 copy_to_user(user_buf, buff, size);
2898 static ssize_t tracing_write(struct file *file, const char __user *user_buf,
2899 size_t len, loff_t *ppos)
2901 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2902 struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2903 int num = ras_comp_int->num;
2904 union ibmvnic_crq crq;
2906 char buff[9]; /* decimal max int plus \n and \0 */
2908 copy_from_user(buff, user_buf, sizeof(buff));
2909 val = kstrtoul(buff, 10, NULL);
2911 memset(&crq, 0, sizeof(crq));
2912 crq.control_ras.first = IBMVNIC_CRQ_CMD;
2913 crq.control_ras.cmd = CONTROL_RAS;
2914 crq.control_ras.correlator = adapter->ras_comps[num].correlator;
2915 crq.control_ras.op = val ? IBMVNIC_TRACE_ON : IBMVNIC_TRACE_OFF;
2920 static const struct file_operations tracing_ops = {
2921 .owner = THIS_MODULE,
2922 .open = simple_open,
2923 .read = tracing_read,
2924 .write = tracing_write,
2927 static ssize_t error_level_read(struct file *file, char __user *user_buf,
2928 size_t len, loff_t *ppos)
2930 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2931 struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2932 int num = ras_comp_int->num;
2933 char buff[5]; /* decimal max char plus \n and \0 */
2936 size = sprintf(buff, "%d\n", adapter->ras_comps[num].error_check_level);
2941 copy_to_user(user_buf, buff, size);
2946 static ssize_t error_level_write(struct file *file, const char __user *user_buf,
2947 size_t len, loff_t *ppos)
2949 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2950 struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2951 int num = ras_comp_int->num;
2952 union ibmvnic_crq crq;
2954 char buff[9]; /* decimal max int plus \n and \0 */
2956 copy_from_user(buff, user_buf, sizeof(buff));
2957 val = kstrtoul(buff, 10, NULL);
2962 memset(&crq, 0, sizeof(crq));
2963 crq.control_ras.first = IBMVNIC_CRQ_CMD;
2964 crq.control_ras.cmd = CONTROL_RAS;
2965 crq.control_ras.correlator = adapter->ras_comps[num].correlator;
2966 crq.control_ras.op = IBMVNIC_ERROR_LEVEL;
2967 crq.control_ras.level = val;
2968 ibmvnic_send_crq(adapter, &crq);
2973 static const struct file_operations error_level_ops = {
2974 .owner = THIS_MODULE,
2975 .open = simple_open,
2976 .read = error_level_read,
2977 .write = error_level_write,
2980 static ssize_t trace_level_read(struct file *file, char __user *user_buf,
2981 size_t len, loff_t *ppos)
2983 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2984 struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2985 int num = ras_comp_int->num;
2986 char buff[5]; /* decimal max char plus \n and \0 */
2989 size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_level);
2993 copy_to_user(user_buf, buff, size);
2998 static ssize_t trace_level_write(struct file *file, const char __user *user_buf,
2999 size_t len, loff_t *ppos)
3001 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
3002 struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
3003 union ibmvnic_crq crq;
3005 char buff[9]; /* decimal max int plus \n and \0 */
3007 copy_from_user(buff, user_buf, sizeof(buff));
3008 val = kstrtoul(buff, 10, NULL);
3012 memset(&crq, 0, sizeof(crq));
3013 crq.control_ras.first = IBMVNIC_CRQ_CMD;
3014 crq.control_ras.cmd = CONTROL_RAS;
3015 crq.control_ras.correlator =
3016 adapter->ras_comps[ras_comp_int->num].correlator;
3017 crq.control_ras.op = IBMVNIC_TRACE_LEVEL;
3018 crq.control_ras.level = val;
3019 ibmvnic_send_crq(adapter, &crq);
3024 static const struct file_operations trace_level_ops = {
3025 .owner = THIS_MODULE,
3026 .open = simple_open,
3027 .read = trace_level_read,
3028 .write = trace_level_write,
3031 static ssize_t trace_buff_size_read(struct file *file, char __user *user_buf,
3032 size_t len, loff_t *ppos)
3034 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
3035 struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
3036 int num = ras_comp_int->num;
3037 char buff[9]; /* decimal max int plus \n and \0 */
3040 size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_buff_size);
3044 copy_to_user(user_buf, buff, size);
3049 static ssize_t trace_buff_size_write(struct file *file,
3050 const char __user *user_buf, size_t len,
3053 struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
3054 struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
3055 union ibmvnic_crq crq;
3057 char buff[9]; /* decimal max int plus \n and \0 */
3059 copy_from_user(buff, user_buf, sizeof(buff));
3060 val = kstrtoul(buff, 10, NULL);
3062 memset(&crq, 0, sizeof(crq));
3063 crq.control_ras.first = IBMVNIC_CRQ_CMD;
3064 crq.control_ras.cmd = CONTROL_RAS;
3065 crq.control_ras.correlator =
3066 adapter->ras_comps[ras_comp_int->num].correlator;
3067 crq.control_ras.op = IBMVNIC_CHG_TRACE_BUFF_SZ;
3068 /* trace_buff_sz is 3 bytes, stuff an int into it */
3069 crq.control_ras.trace_buff_sz[0] = ((u8 *)(&val))[5];
3070 crq.control_ras.trace_buff_sz[1] = ((u8 *)(&val))[6];
3071 crq.control_ras.trace_buff_sz[2] = ((u8 *)(&val))[7];
3072 ibmvnic_send_crq(adapter, &crq);
3077 static const struct file_operations trace_size_ops = {
3078 .owner = THIS_MODULE,
3079 .open = simple_open,
3080 .read = trace_buff_size_read,
3081 .write = trace_buff_size_write,
3084 static void handle_request_ras_comps_rsp(union ibmvnic_crq *crq,
3085 struct ibmvnic_adapter *adapter)
3087 struct device *dev = &adapter->vdev->dev;
3088 struct dentry *dir_ent;
3092 debugfs_remove_recursive(adapter->ras_comps_ent);
3094 adapter->ras_comps_ent = debugfs_create_dir("ras_comps",
3095 adapter->debugfs_dir);
3096 if (!adapter->ras_comps_ent || IS_ERR(adapter->ras_comps_ent)) {
3097 dev_info(dev, "debugfs create ras_comps dir failed\n");
3101 for (i = 0; i < adapter->ras_comp_num; i++) {
3102 dir_ent = debugfs_create_dir(adapter->ras_comps[i].name,
3103 adapter->ras_comps_ent);
3104 if (!dir_ent || IS_ERR(dir_ent)) {
3105 dev_info(dev, "debugfs create %s dir failed\n",
3106 adapter->ras_comps[i].name);
3110 adapter->ras_comp_int[i].adapter = adapter;
3111 adapter->ras_comp_int[i].num = i;
3112 adapter->ras_comp_int[i].desc_blob.data =
3113 &adapter->ras_comps[i].description;
3114 adapter->ras_comp_int[i].desc_blob.size =
3115 sizeof(adapter->ras_comps[i].description);
3117 /* Don't need to remember the dentry's because the debugfs dir
3118 * gets removed recursively
3120 ent = debugfs_create_blob("description", S_IRUGO, dir_ent,
3121 &adapter->ras_comp_int[i].desc_blob);
3122 ent = debugfs_create_file("trace_buf_size", S_IRUGO | S_IWUSR,
3123 dir_ent, &adapter->ras_comp_int[i],
3125 ent = debugfs_create_file("trace_level",
3127 (adapter->ras_comps[i].trace_level !=
3128 0xFF ? S_IWUSR : 0),
3129 dir_ent, &adapter->ras_comp_int[i],
3131 ent = debugfs_create_file("error_level",
3134 ras_comps[i].error_check_level !=
3135 0xFF ? S_IWUSR : 0),
3136 dir_ent, &adapter->ras_comp_int[i],
3138 ent = debugfs_create_file("tracing", S_IRUGO | S_IWUSR,
3139 dir_ent, &adapter->ras_comp_int[i],
3141 ent = debugfs_create_file("paused", S_IRUGO | S_IWUSR,
3142 dir_ent, &adapter->ras_comp_int[i],
3144 ent = debugfs_create_file("trace", S_IRUGO, dir_ent,
3145 &adapter->ras_comp_int[i],
3150 static void handle_request_ras_comp_num_rsp(union ibmvnic_crq *crq,
3151 struct ibmvnic_adapter *adapter)
3153 int len = adapter->ras_comp_num * sizeof(struct ibmvnic_fw_component);
3154 struct device *dev = &adapter->vdev->dev;
3155 union ibmvnic_crq newcrq;
3157 adapter->ras_comps = dma_alloc_coherent(dev, len,
3158 &adapter->ras_comps_tok,
3160 if (!adapter->ras_comps) {
3161 if (!firmware_has_feature(FW_FEATURE_CMO))
3162 dev_err(dev, "Couldn't alloc fw comps buffer\n");
3166 adapter->ras_comp_int = kmalloc(adapter->ras_comp_num *
3167 sizeof(struct ibmvnic_fw_comp_internal),
3169 if (!adapter->ras_comp_int)
3170 dma_free_coherent(dev, len, adapter->ras_comps,
3171 adapter->ras_comps_tok);
3173 memset(&newcrq, 0, sizeof(newcrq));
3174 newcrq.request_ras_comps.first = IBMVNIC_CRQ_CMD;
3175 newcrq.request_ras_comps.cmd = REQUEST_RAS_COMPS;
3176 newcrq.request_ras_comps.ioba = cpu_to_be32(adapter->ras_comps_tok);
3177 newcrq.request_ras_comps.len = cpu_to_be32(len);
3178 ibmvnic_send_crq(adapter, &newcrq);
3181 static void ibmvnic_free_inflight(struct ibmvnic_adapter *adapter)
3183 struct ibmvnic_inflight_cmd *inflight_cmd, *tmp1;
3184 struct device *dev = &adapter->vdev->dev;
3185 struct ibmvnic_error_buff *error_buff, *tmp2;
3186 unsigned long flags;
3187 unsigned long flags2;
3189 spin_lock_irqsave(&adapter->inflight_lock, flags);
3190 list_for_each_entry_safe(inflight_cmd, tmp1, &adapter->inflight, list) {
3191 switch (inflight_cmd->crq.generic.cmd) {
3193 dma_unmap_single(dev, adapter->login_buf_token,
3194 adapter->login_buf_sz,
3196 dma_unmap_single(dev, adapter->login_rsp_buf_token,
3197 adapter->login_rsp_buf_sz,
3199 kfree(adapter->login_rsp_buf);
3200 kfree(adapter->login_buf);
3203 complete(&adapter->fw_done);
3205 case REQUEST_ERROR_INFO:
3206 spin_lock_irqsave(&adapter->error_list_lock, flags2);
3207 list_for_each_entry_safe(error_buff, tmp2,
3208 &adapter->errors, list) {
3209 dma_unmap_single(dev, error_buff->dma,
3212 kfree(error_buff->buff);
3213 list_del(&error_buff->list);
3216 spin_unlock_irqrestore(&adapter->error_list_lock,
3220 list_del(&inflight_cmd->list);
3221 kfree(inflight_cmd);
3223 spin_unlock_irqrestore(&adapter->inflight_lock, flags);
3226 static void ibmvnic_xport_event(struct work_struct *work)
3228 struct ibmvnic_adapter *adapter = container_of(work,
3229 struct ibmvnic_adapter,
3231 struct device *dev = &adapter->vdev->dev;
3234 ibmvnic_free_inflight(adapter);
3235 release_sub_crqs(adapter);
3236 if (adapter->migrated) {
3237 rc = ibmvnic_reenable_crq_queue(adapter);
3239 dev_err(dev, "Error after enable rc=%ld\n", rc);
3240 adapter->migrated = false;
3241 rc = ibmvnic_send_crq_init(adapter);
3243 dev_err(dev, "Error sending init rc=%ld\n", rc);
3247 static void ibmvnic_handle_crq(union ibmvnic_crq *crq,
3248 struct ibmvnic_adapter *adapter)
3250 struct ibmvnic_generic_crq *gen_crq = &crq->generic;
3251 struct net_device *netdev = adapter->netdev;
3252 struct device *dev = &adapter->vdev->dev;
3255 netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n",
3256 ((unsigned long int *)crq)[0],
3257 ((unsigned long int *)crq)[1]);
3258 switch (gen_crq->first) {
3259 case IBMVNIC_CRQ_INIT_RSP:
3260 switch (gen_crq->cmd) {
3261 case IBMVNIC_CRQ_INIT:
3262 dev_info(dev, "Partner initialized\n");
3263 /* Send back a response */
3264 rc = ibmvnic_send_crq_init_complete(adapter);
3266 schedule_work(&adapter->vnic_crq_init);
3268 dev_err(dev, "Can't send initrsp rc=%ld\n", rc);
3270 case IBMVNIC_CRQ_INIT_COMPLETE:
3271 dev_info(dev, "Partner initialization complete\n");
3272 send_version_xchg(adapter);
3275 dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd);
3278 case IBMVNIC_CRQ_XPORT_EVENT:
3279 if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) {
3280 dev_info(dev, "Re-enabling adapter\n");
3281 adapter->migrated = true;
3282 schedule_work(&adapter->ibmvnic_xport);
3283 } else if (gen_crq->cmd == IBMVNIC_DEVICE_FAILOVER) {
3284 dev_info(dev, "Backing device failover detected\n");
3285 netif_carrier_off(netdev);
3286 adapter->failover = true;
3288 /* The adapter lost the connection */
3289 dev_err(dev, "Virtual Adapter failed (rc=%d)\n",
3291 schedule_work(&adapter->ibmvnic_xport);
3294 case IBMVNIC_CRQ_CMD_RSP:
3297 dev_err(dev, "Got an invalid msg type 0x%02x\n",
3302 switch (gen_crq->cmd) {
3303 case VERSION_EXCHANGE_RSP:
3304 rc = crq->version_exchange_rsp.rc.code;
3306 dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc);
3309 dev_info(dev, "Partner protocol version is %d\n",
3310 crq->version_exchange_rsp.version);
3311 if (be16_to_cpu(crq->version_exchange_rsp.version) <
3314 be16_to_cpu(crq->version_exchange_rsp.version);
3315 send_cap_queries(adapter);
3317 case QUERY_CAPABILITY_RSP:
3318 handle_query_cap_rsp(crq, adapter);
3321 handle_query_map_rsp(crq, adapter);
3323 case REQUEST_MAP_RSP:
3324 handle_request_map_rsp(crq, adapter);
3326 case REQUEST_UNMAP_RSP:
3327 handle_request_unmap_rsp(crq, adapter);
3329 case REQUEST_CAPABILITY_RSP:
3330 handle_request_cap_rsp(crq, adapter);
3333 netdev_dbg(netdev, "Got Login Response\n");
3334 handle_login_rsp(crq, adapter);
3336 case LOGICAL_LINK_STATE_RSP:
3337 netdev_dbg(netdev, "Got Logical Link State Response\n");
3338 adapter->logical_link_state =
3339 crq->logical_link_state_rsp.link_state;
3341 case LINK_STATE_INDICATION:
3342 netdev_dbg(netdev, "Got Logical Link State Indication\n");
3343 adapter->phys_link_state =
3344 crq->link_state_indication.phys_link_state;
3345 adapter->logical_link_state =
3346 crq->link_state_indication.logical_link_state;
3348 case CHANGE_MAC_ADDR_RSP:
3349 netdev_dbg(netdev, "Got MAC address change Response\n");
3350 handle_change_mac_rsp(crq, adapter);
3352 case ERROR_INDICATION:
3353 netdev_dbg(netdev, "Got Error Indication\n");
3354 handle_error_indication(crq, adapter);
3356 case REQUEST_ERROR_RSP:
3357 netdev_dbg(netdev, "Got Error Detail Response\n");
3358 handle_error_info_rsp(crq, adapter);
3360 case REQUEST_STATISTICS_RSP:
3361 netdev_dbg(netdev, "Got Statistics Response\n");
3362 complete(&adapter->stats_done);
3364 case REQUEST_DUMP_SIZE_RSP:
3365 netdev_dbg(netdev, "Got Request Dump Size Response\n");
3366 handle_dump_size_rsp(crq, adapter);
3368 case REQUEST_DUMP_RSP:
3369 netdev_dbg(netdev, "Got Request Dump Response\n");
3370 complete(&adapter->fw_done);
3372 case QUERY_IP_OFFLOAD_RSP:
3373 netdev_dbg(netdev, "Got Query IP offload Response\n");
3374 handle_query_ip_offload_rsp(adapter);
3376 case MULTICAST_CTRL_RSP:
3377 netdev_dbg(netdev, "Got multicast control Response\n");
3379 case CONTROL_IP_OFFLOAD_RSP:
3380 netdev_dbg(netdev, "Got Control IP offload Response\n");
3381 dma_unmap_single(dev, adapter->ip_offload_ctrl_tok,
3382 sizeof(adapter->ip_offload_ctrl),
3384 /* We're done with the queries, perform the login */
3385 send_login(adapter);
3387 case REQUEST_RAS_COMP_NUM_RSP:
3388 netdev_dbg(netdev, "Got Request RAS Comp Num Response\n");
3389 if (crq->request_ras_comp_num_rsp.rc.code == 10) {
3390 netdev_dbg(netdev, "Request RAS Comp Num not supported\n");
3393 adapter->ras_comp_num =
3394 be32_to_cpu(crq->request_ras_comp_num_rsp.num_components);
3395 handle_request_ras_comp_num_rsp(crq, adapter);
3397 case REQUEST_RAS_COMPS_RSP:
3398 netdev_dbg(netdev, "Got Request RAS Comps Response\n");
3399 handle_request_ras_comps_rsp(crq, adapter);
3401 case CONTROL_RAS_RSP:
3402 netdev_dbg(netdev, "Got Control RAS Response\n");
3403 handle_control_ras_rsp(crq, adapter);
3405 case COLLECT_FW_TRACE_RSP:
3406 netdev_dbg(netdev, "Got Collect firmware trace Response\n");
3407 complete(&adapter->fw_done);
3410 netdev_err(netdev, "Got an invalid cmd type 0x%02x\n",
3415 static irqreturn_t ibmvnic_interrupt(int irq, void *instance)
3417 struct ibmvnic_adapter *adapter = instance;
3418 struct ibmvnic_crq_queue *queue = &adapter->crq;
3419 struct vio_dev *vdev = adapter->vdev;
3420 union ibmvnic_crq *crq;
3421 unsigned long flags;
3424 spin_lock_irqsave(&queue->lock, flags);
3425 vio_disable_interrupts(vdev);
3427 /* Pull all the valid messages off the CRQ */
3428 while ((crq = ibmvnic_next_crq(adapter)) != NULL) {
3429 ibmvnic_handle_crq(crq, adapter);
3430 crq->generic.first = 0;
3432 vio_enable_interrupts(vdev);
3433 crq = ibmvnic_next_crq(adapter);
3435 vio_disable_interrupts(vdev);
3436 ibmvnic_handle_crq(crq, adapter);
3437 crq->generic.first = 0;
3442 spin_unlock_irqrestore(&queue->lock, flags);
3446 static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter)
3448 struct vio_dev *vdev = adapter->vdev;
3452 rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
3453 } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc));
3456 dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc);
3461 static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter)
3463 struct ibmvnic_crq_queue *crq = &adapter->crq;
3464 struct device *dev = &adapter->vdev->dev;
3465 struct vio_dev *vdev = adapter->vdev;
3470 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
3471 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
3473 /* Clean out the queue */
3474 memset(crq->msgs, 0, PAGE_SIZE);
3477 /* And re-open it again */
3478 rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
3479 crq->msg_token, PAGE_SIZE);
3482 /* Adapter is good, but other end is not ready */
3483 dev_warn(dev, "Partner adapter not ready\n");
3485 dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc);
3490 static void ibmvnic_release_crq_queue(struct ibmvnic_adapter *adapter)
3492 struct ibmvnic_crq_queue *crq = &adapter->crq;
3493 struct vio_dev *vdev = adapter->vdev;
3496 netdev_dbg(adapter->netdev, "Releasing CRQ\n");
3497 free_irq(vdev->irq, adapter);
3499 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
3500 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
3502 dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE,
3504 free_page((unsigned long)crq->msgs);
3507 static int ibmvnic_init_crq_queue(struct ibmvnic_adapter *adapter)
3509 struct ibmvnic_crq_queue *crq = &adapter->crq;
3510 struct device *dev = &adapter->vdev->dev;
3511 struct vio_dev *vdev = adapter->vdev;
3512 int rc, retrc = -ENOMEM;
3514 crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL);
3515 /* Should we allocate more than one page? */
3520 crq->size = PAGE_SIZE / sizeof(*crq->msgs);
3521 crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE,
3523 if (dma_mapping_error(dev, crq->msg_token))
3526 rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
3527 crq->msg_token, PAGE_SIZE);
3529 if (rc == H_RESOURCE)
3530 /* maybe kexecing and resource is busy. try a reset */
3531 rc = ibmvnic_reset_crq(adapter);
3534 if (rc == H_CLOSED) {
3535 dev_warn(dev, "Partner adapter not ready\n");
3537 dev_warn(dev, "Error %d opening adapter\n", rc);
3538 goto reg_crq_failed;
3543 netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq);
3544 rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME,
3547 dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n",
3549 goto req_irq_failed;
3552 rc = vio_enable_interrupts(vdev);
3554 dev_err(dev, "Error %d enabling interrupts\n", rc);
3555 goto req_irq_failed;
3559 spin_lock_init(&crq->lock);
3565 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
3566 } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
3568 dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
3570 free_page((unsigned long)crq->msgs);
3574 /* debugfs for dump */
3575 static int ibmvnic_dump_show(struct seq_file *seq, void *v)
3577 struct net_device *netdev = seq->private;
3578 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
3579 struct device *dev = &adapter->vdev->dev;
3580 union ibmvnic_crq crq;
3582 memset(&crq, 0, sizeof(crq));
3583 crq.request_dump_size.first = IBMVNIC_CRQ_CMD;
3584 crq.request_dump_size.cmd = REQUEST_DUMP_SIZE;
3586 init_completion(&adapter->fw_done);
3587 ibmvnic_send_crq(adapter, &crq);
3588 wait_for_completion(&adapter->fw_done);
3590 seq_write(seq, adapter->dump_data, adapter->dump_data_size);
3592 dma_unmap_single(dev, adapter->dump_data_token, adapter->dump_data_size,
3595 kfree(adapter->dump_data);
3600 static int ibmvnic_dump_open(struct inode *inode, struct file *file)
3602 return single_open(file, ibmvnic_dump_show, inode->i_private);
3605 static const struct file_operations ibmvnic_dump_ops = {
3606 .owner = THIS_MODULE,
3607 .open = ibmvnic_dump_open,
3609 .llseek = seq_lseek,
3610 .release = single_release,
3613 static void handle_crq_init_rsp(struct work_struct *work)
3615 struct ibmvnic_adapter *adapter = container_of(work,
3616 struct ibmvnic_adapter,
3618 struct device *dev = &adapter->vdev->dev;
3619 struct net_device *netdev = adapter->netdev;
3620 unsigned long timeout = msecs_to_jiffies(30000);
3621 bool restart = false;
3624 if (adapter->failover) {
3625 release_sub_crqs(adapter);
3626 if (netif_running(netdev)) {
3627 netif_tx_disable(netdev);
3628 ibmvnic_close(netdev);
3633 reinit_completion(&adapter->init_done);
3634 send_version_xchg(adapter);
3635 if (!wait_for_completion_timeout(&adapter->init_done, timeout)) {
3636 dev_err(dev, "Passive init timeout\n");
3641 if (adapter->renegotiate) {
3642 adapter->renegotiate = false;
3643 release_sub_crqs_no_irqs(adapter);
3645 reinit_completion(&adapter->init_done);
3646 send_cap_queries(adapter);
3647 if (!wait_for_completion_timeout(&adapter->init_done,
3649 dev_err(dev, "Passive init timeout\n");
3653 } while (adapter->renegotiate);
3654 rc = init_sub_crq_irqs(adapter);
3659 netdev->real_num_tx_queues = adapter->req_tx_queues;
3660 netdev->mtu = adapter->req_mtu - ETH_HLEN;
3662 if (adapter->failover) {
3663 adapter->failover = false;
3665 rc = ibmvnic_open(netdev);
3667 goto restart_failed;
3669 netif_carrier_on(netdev);
3673 rc = register_netdev(netdev);
3676 "failed to register netdev rc=%d\n", rc);
3677 goto register_failed;
3679 dev_info(dev, "ibmvnic registered\n");
3684 dev_err(dev, "Failed to restart ibmvnic, rc=%d\n", rc);
3686 release_sub_crqs(adapter);
3688 dev_err(dev, "Passive initialization was not successful\n");
3691 static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
3693 unsigned long timeout = msecs_to_jiffies(30000);
3694 struct ibmvnic_adapter *adapter;
3695 struct net_device *netdev;
3696 unsigned char *mac_addr_p;
3698 char buf[17]; /* debugfs name buf */
3701 dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n",
3704 mac_addr_p = (unsigned char *)vio_get_attribute(dev,
3705 VETH_MAC_ADDR, NULL);
3708 "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n",
3709 __FILE__, __LINE__);
3713 netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter),
3714 IBMVNIC_MAX_TX_QUEUES);
3718 adapter = netdev_priv(netdev);
3719 dev_set_drvdata(&dev->dev, netdev);
3720 adapter->vdev = dev;
3721 adapter->netdev = netdev;
3722 adapter->failover = false;
3724 ether_addr_copy(adapter->mac_addr, mac_addr_p);
3725 ether_addr_copy(netdev->dev_addr, adapter->mac_addr);
3726 netdev->irq = dev->irq;
3727 netdev->netdev_ops = &ibmvnic_netdev_ops;
3728 netdev->ethtool_ops = &ibmvnic_ethtool_ops;
3729 SET_NETDEV_DEV(netdev, &dev->dev);
3731 INIT_WORK(&adapter->vnic_crq_init, handle_crq_init_rsp);
3732 INIT_WORK(&adapter->ibmvnic_xport, ibmvnic_xport_event);
3734 spin_lock_init(&adapter->stats_lock);
3736 rc = ibmvnic_init_crq_queue(adapter);
3738 dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n", rc);
3742 INIT_LIST_HEAD(&adapter->errors);
3743 INIT_LIST_HEAD(&adapter->inflight);
3744 spin_lock_init(&adapter->error_list_lock);
3745 spin_lock_init(&adapter->inflight_lock);
3747 adapter->stats_token = dma_map_single(&dev->dev, &adapter->stats,
3748 sizeof(struct ibmvnic_statistics),
3750 if (dma_mapping_error(&dev->dev, adapter->stats_token)) {
3751 if (!firmware_has_feature(FW_FEATURE_CMO))
3752 dev_err(&dev->dev, "Couldn't map stats buffer\n");
3757 snprintf(buf, sizeof(buf), "ibmvnic_%x", dev->unit_address);
3758 ent = debugfs_create_dir(buf, NULL);
3759 if (!ent || IS_ERR(ent)) {
3760 dev_info(&dev->dev, "debugfs create directory failed\n");
3761 adapter->debugfs_dir = NULL;
3763 adapter->debugfs_dir = ent;
3764 ent = debugfs_create_file("dump", S_IRUGO, adapter->debugfs_dir,
3765 netdev, &ibmvnic_dump_ops);
3766 if (!ent || IS_ERR(ent)) {
3768 "debugfs create dump file failed\n");
3769 adapter->debugfs_dump = NULL;
3771 adapter->debugfs_dump = ent;
3775 init_completion(&adapter->init_done);
3776 ibmvnic_send_crq_init(adapter);
3777 if (!wait_for_completion_timeout(&adapter->init_done, timeout))
3781 if (adapter->renegotiate) {
3782 adapter->renegotiate = false;
3783 release_sub_crqs_no_irqs(adapter);
3785 reinit_completion(&adapter->init_done);
3786 send_cap_queries(adapter);
3787 if (!wait_for_completion_timeout(&adapter->init_done,
3791 } while (adapter->renegotiate);
3793 rc = init_sub_crq_irqs(adapter);
3795 dev_err(&dev->dev, "failed to initialize sub crq irqs\n");
3799 netdev->real_num_tx_queues = adapter->req_tx_queues;
3800 netdev->mtu = adapter->req_mtu - ETH_HLEN;
3802 rc = register_netdev(netdev);
3804 dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc);
3807 dev_info(&dev->dev, "ibmvnic registered\n");
3812 release_sub_crqs(adapter);
3814 if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir))
3815 debugfs_remove_recursive(adapter->debugfs_dir);
3817 ibmvnic_release_crq_queue(adapter);
3819 free_netdev(netdev);
3823 static int ibmvnic_remove(struct vio_dev *dev)
3825 struct net_device *netdev = dev_get_drvdata(&dev->dev);
3826 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
3828 unregister_netdev(netdev);
3830 release_sub_crqs(adapter);
3832 ibmvnic_release_crq_queue(adapter);
3834 if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir))
3835 debugfs_remove_recursive(adapter->debugfs_dir);
3837 dma_unmap_single(&dev->dev, adapter->stats_token,
3838 sizeof(struct ibmvnic_statistics), DMA_FROM_DEVICE);
3840 if (adapter->ras_comps)
3841 dma_free_coherent(&dev->dev,
3842 adapter->ras_comp_num *
3843 sizeof(struct ibmvnic_fw_component),
3844 adapter->ras_comps, adapter->ras_comps_tok);
3846 kfree(adapter->ras_comp_int);
3848 free_netdev(netdev);
3849 dev_set_drvdata(&dev->dev, NULL);
3854 static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev)
3856 struct net_device *netdev = dev_get_drvdata(&vdev->dev);
3857 struct ibmvnic_adapter *adapter;
3858 struct iommu_table *tbl;
3859 unsigned long ret = 0;
3862 tbl = get_iommu_table_base(&vdev->dev);
3864 /* netdev inits at probe time along with the structures we need below*/
3866 return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl);
3868 adapter = netdev_priv(netdev);
3870 ret += PAGE_SIZE; /* the crq message queue */
3871 ret += adapter->bounce_buffer_size;
3872 ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl);
3874 for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++)
3875 ret += 4 * PAGE_SIZE; /* the scrq message queue */
3877 for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
3879 ret += adapter->rx_pool[i].size *
3880 IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl);
3885 static int ibmvnic_resume(struct device *dev)
3887 struct net_device *netdev = dev_get_drvdata(dev);
3888 struct ibmvnic_adapter *adapter = netdev_priv(netdev);
3891 /* kick the interrupt handlers just in case we lost an interrupt */
3892 for (i = 0; i < adapter->req_rx_queues; i++)
3893 ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq,
3894 adapter->rx_scrq[i]);
3899 static struct vio_device_id ibmvnic_device_table[] = {
3900 {"network", "IBM,vnic"},
3903 MODULE_DEVICE_TABLE(vio, ibmvnic_device_table);
3905 static const struct dev_pm_ops ibmvnic_pm_ops = {
3906 .resume = ibmvnic_resume
3909 static struct vio_driver ibmvnic_driver = {
3910 .id_table = ibmvnic_device_table,
3911 .probe = ibmvnic_probe,
3912 .remove = ibmvnic_remove,
3913 .get_desired_dma = ibmvnic_get_desired_dma,
3914 .name = ibmvnic_driver_name,
3915 .pm = &ibmvnic_pm_ops,
3918 /* module functions */
3919 static int __init ibmvnic_module_init(void)
3921 pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string,
3922 IBMVNIC_DRIVER_VERSION);
3924 return vio_register_driver(&ibmvnic_driver);
3927 static void __exit ibmvnic_module_exit(void)
3929 vio_unregister_driver(&ibmvnic_driver);
3932 module_init(ibmvnic_module_init);
3933 module_exit(ibmvnic_module_exit);