drivers/net/ethernet/ibm/ibmvnic.c

   1 /**************************************************************************/
   2 /*                                                                        */
   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)                                */
   8 /*                                                                        */
   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.                                   */
  13 /*                                                                        */
  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.                          */
  18 /*                                                                        */
  19 /*  You should have received a copy of the GNU General Public License     */
  20 /*  along with this program.                                              */
  21 /*                                                                        */
  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.   */
  26 /*                                                                         */
  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.                      */
  36 /*                                                                        */
  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.     */
  43 /*                                                                        */
  44 /**************************************************************************/
  45
  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>
  59 #include <linux/mm.h>
  60 #include <linux/ethtool.h>
  61 #include <linux/proc_fs.h>
  62 #include <linux/in.h>
  63 #include <linux/ip.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>
  73 #include <asm/vio.h>
  74 #include <asm/iommu.h>
  75 #include <linux/uaccess.h>
  76 #include <asm/firmware.h>
  77 #include <linux/seq_file.h>
  78
  79 #include "ibmvnic.h"
  80
  81 static const char ibmvnic_driver_name[] = "ibmvnic";
  82 static const char ibmvnic_driver_string[] = "IBM System i/p Virtual NIC Driver";
  83
  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);
  88
  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);
 113
 114 struct ibmvnic_stat {
 115         char name[ETH_GSTRING_LEN];
 116         int offset;
 117 };
 118
 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)))
 122
 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)},
 146 };
 147
 148 static long h_reg_sub_crq(unsigned long unit_address, unsigned long token,
 149                           unsigned long length, unsigned long *number,
 150                           unsigned long *irq)
 151 {
 152         unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 153         long rc;
 154
 155         rc = plpar_hcall(H_REG_SUB_CRQ, retbuf, unit_address, token, length);
 156         *number = retbuf[0];
 157         *irq = retbuf[1];
 158
 159         return rc;
 160 }
 161
 162 /* net_device_ops functions */
 163
 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)
 167 {
 168         netdev_dbg(adapter->netdev,
 169                    "Initializing rx_pool %d, %d buffs, %d bytes each\n",
 170                    index, num, buff_size);
 171         rx_pool->size = num;
 172         rx_pool->index = index;
 173         rx_pool->buff_size = buff_size;
 174         rx_pool->active = active;
 175 }
 176
 177 static int alloc_long_term_buff(struct ibmvnic_adapter *adapter,
 178                                 struct ibmvnic_long_term_buff *ltb, int size)
 179 {
 180         struct device *dev = &adapter->vdev->dev;
 181
 182         ltb->size = size;
 183         ltb->buff = dma_alloc_coherent(dev, ltb->size, &ltb->addr,
 184                                        GFP_KERNEL);
 185
 186         if (!ltb->buff) {
 187                 dev_err(dev, "Couldn't alloc long term buffer\n");
 188                 return -ENOMEM;
 189         }
 190         ltb->map_id = adapter->map_id;
 191         adapter->map_id++;
 192         send_request_map(adapter, ltb->addr,
 193                          ltb->size, ltb->map_id);
 194         init_completion(&adapter->fw_done);
 195         wait_for_completion(&adapter->fw_done);
 196         return 0;
 197 }
 198
 199 static void free_long_term_buff(struct ibmvnic_adapter *adapter,
 200                                 struct ibmvnic_long_term_buff *ltb)
 201 {
 202         struct device *dev = &adapter->vdev->dev;
 203
 204         dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr);
 205         send_request_unmap(adapter, ltb->map_id);
 206 }
 207
 208 static int alloc_rx_pool(struct ibmvnic_adapter *adapter,
 209                          struct ibmvnic_rx_pool *pool)
 210 {
 211         struct device *dev = &adapter->vdev->dev;
 212         int i;
 213
 214         pool->free_map = kcalloc(pool->size, sizeof(int), GFP_KERNEL);
 215         if (!pool->free_map)
 216                 return -ENOMEM;
 217
 218         pool->rx_buff = kcalloc(pool->size, sizeof(struct ibmvnic_rx_buff),
 219                                 GFP_KERNEL);
 220
 221         if (!pool->rx_buff) {
 222                 dev_err(dev, "Couldn't alloc rx buffers\n");
 223                 kfree(pool->free_map);
 224                 return -ENOMEM;
 225         }
 226
 227         if (alloc_long_term_buff(adapter, &pool->long_term_buff,
 228                                  pool->size * pool->buff_size)) {
 229                 kfree(pool->free_map);
 230                 kfree(pool->rx_buff);
 231                 return -ENOMEM;
 232         }
 233
 234         for (i = 0; i < pool->size; ++i)
 235                 pool->free_map[i] = i;
 236
 237         atomic_set(&pool->available, 0);
 238         pool->next_alloc = 0;
 239         pool->next_free = 0;
 240
 241         return 0;
 242 }
 243
 244 static void replenish_rx_pool(struct ibmvnic_adapter *adapter,
 245                               struct ibmvnic_rx_pool *pool)
 246 {
 247         int count = pool->size - atomic_read(&pool->available);
 248         struct device *dev = &adapter->vdev->dev;
 249         int buffers_added = 0;
 250         unsigned long lpar_rc;
 251         union sub_crq sub_crq;
 252         struct sk_buff *skb;
 253         unsigned int offset;
 254         dma_addr_t dma_addr;
 255         unsigned char *dst;
 256         u64 *handle_array;
 257         int shift = 0;
 258         int index;
 259         int i;
 260
 261         handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
 262                                       be32_to_cpu(adapter->login_rsp_buf->
 263                                       off_rxadd_subcrqs));
 264
 265         for (i = 0; i < count; ++i) {
 266                 skb = alloc_skb(pool->buff_size, GFP_ATOMIC);
 267                 if (!skb) {
 268                         dev_err(dev, "Couldn't replenish rx buff\n");
 269                         adapter->replenish_no_mem++;
 270                         break;
 271                 }
 272
 273                 index = pool->free_map[pool->next_free];
 274
 275                 if (pool->rx_buff[index].skb)
 276                         dev_err(dev, "Inconsistent free_map!\n");
 277
 278                 /* Copy the skb to the long term mapped DMA buffer */
 279                 offset = index * pool->buff_size;
 280                 dst = pool->long_term_buff.buff + offset;
 281                 memset(dst, 0, pool->buff_size);
 282                 dma_addr = pool->long_term_buff.addr + offset;
 283                 pool->rx_buff[index].data = dst;
 284
 285                 pool->free_map[pool->next_free] = IBMVNIC_INVALID_MAP;
 286                 pool->rx_buff[index].dma = dma_addr;
 287                 pool->rx_buff[index].skb = skb;
 288                 pool->rx_buff[index].pool_index = pool->index;
 289                 pool->rx_buff[index].size = pool->buff_size;
 290
 291                 memset(&sub_crq, 0, sizeof(sub_crq));
 292                 sub_crq.rx_add.first = IBMVNIC_CRQ_CMD;
 293                 sub_crq.rx_add.correlator =
 294                     cpu_to_be64((u64)&pool->rx_buff[index]);
 295                 sub_crq.rx_add.ioba = cpu_to_be32(dma_addr);
 296                 sub_crq.rx_add.map_id = pool->long_term_buff.map_id;
 297
 298                 /* The length field of the sCRQ is defined to be 24 bits so the
 299                  * buffer size needs to be left shifted by a byte before it is
 300                  * converted to big endian to prevent the last byte from being
 301                  * truncated.
 302                  */
 303 #ifdef __LITTLE_ENDIAN__
 304                 shift = 8;
 305 #endif
 306                 sub_crq.rx_add.len = cpu_to_be32(pool->buff_size << shift);
 307
 308                 lpar_rc = send_subcrq(adapter, handle_array[pool->index],
 309                                       &sub_crq);
 310                 if (lpar_rc != H_SUCCESS)
 311                         goto failure;
 312
 313                 buffers_added++;
 314                 adapter->replenish_add_buff_success++;
 315                 pool->next_free = (pool->next_free + 1) % pool->size;
 316         }
 317         atomic_add(buffers_added, &pool->available);
 318         return;
 319
 320 failure:
 321         dev_info(dev, "replenish pools failure\n");
 322         pool->free_map[pool->next_free] = index;
 323         pool->rx_buff[index].skb = NULL;
 324         if (!dma_mapping_error(dev, dma_addr))
 325                 dma_unmap_single(dev, dma_addr, pool->buff_size,
 326                                  DMA_FROM_DEVICE);
 327
 328         dev_kfree_skb_any(skb);
 329         adapter->replenish_add_buff_failure++;
 330         atomic_add(buffers_added, &pool->available);
 331 }
 332
 333 static void replenish_pools(struct ibmvnic_adapter *adapter)
 334 {
 335         int i;
 336
 337         if (adapter->migrated)
 338                 return;
 339
 340         adapter->replenish_task_cycles++;
 341         for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
 342              i++) {
 343                 if (adapter->rx_pool[i].active)
 344                         replenish_rx_pool(adapter, &adapter->rx_pool[i]);
 345         }
 346 }
 347
 348 static void free_rx_pool(struct ibmvnic_adapter *adapter,
 349                          struct ibmvnic_rx_pool *pool)
 350 {
 351         int i;
 352
 353         kfree(pool->free_map);
 354         pool->free_map = NULL;
 355
 356         if (!pool->rx_buff)
 357                 return;
 358
 359         for (i = 0; i < pool->size; i++) {
 360                 if (pool->rx_buff[i].skb) {
 361                         dev_kfree_skb_any(pool->rx_buff[i].skb);
 362                         pool->rx_buff[i].skb = NULL;
 363                 }
 364         }
 365         kfree(pool->rx_buff);
 366         pool->rx_buff = NULL;
 367 }
 368
 369 static int ibmvnic_open(struct net_device *netdev)
 370 {
 371         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
 372         struct device *dev = &adapter->vdev->dev;
 373         struct ibmvnic_tx_pool *tx_pool;
 374         union ibmvnic_crq crq;
 375         int rxadd_subcrqs;
 376         u64 *size_array;
 377         int tx_subcrqs;
 378         int i, j;
 379
 380         rxadd_subcrqs =
 381             be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
 382         tx_subcrqs =
 383             be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
 384         size_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
 385                                   be32_to_cpu(adapter->login_rsp_buf->
 386                                               off_rxadd_buff_size));
 387         adapter->map_id = 1;
 388         adapter->napi = kcalloc(adapter->req_rx_queues,
 389                                 sizeof(struct napi_struct), GFP_KERNEL);
 390         if (!adapter->napi)
 391                 goto alloc_napi_failed;
 392         for (i = 0; i < adapter->req_rx_queues; i++) {
 393                 netif_napi_add(netdev, &adapter->napi[i], ibmvnic_poll,
 394                                NAPI_POLL_WEIGHT);
 395                 napi_enable(&adapter->napi[i]);
 396         }
 397         adapter->rx_pool =
 398             kcalloc(rxadd_subcrqs, sizeof(struct ibmvnic_rx_pool), GFP_KERNEL);
 399
 400         if (!adapter->rx_pool)
 401                 goto rx_pool_arr_alloc_failed;
 402         send_map_query(adapter);
 403         for (i = 0; i < rxadd_subcrqs; i++) {
 404                 init_rx_pool(adapter, &adapter->rx_pool[i],
 405                              IBMVNIC_BUFFS_PER_POOL, i,
 406                              be64_to_cpu(size_array[i]), 1);
 407                 if (alloc_rx_pool(adapter, &adapter->rx_pool[i])) {
 408                         dev_err(dev, "Couldn't alloc rx pool\n");
 409                         goto rx_pool_alloc_failed;
 410                 }
 411         }
 412         adapter->tx_pool =
 413             kcalloc(tx_subcrqs, sizeof(struct ibmvnic_tx_pool), GFP_KERNEL);
 414
 415         if (!adapter->tx_pool)
 416                 goto tx_pool_arr_alloc_failed;
 417         for (i = 0; i < tx_subcrqs; i++) {
 418                 tx_pool = &adapter->tx_pool[i];
 419                 tx_pool->tx_buff =
 420                     kcalloc(adapter->max_tx_entries_per_subcrq,
 421                             sizeof(struct ibmvnic_tx_buff), GFP_KERNEL);
 422                 if (!tx_pool->tx_buff)
 423                         goto tx_pool_alloc_failed;
 424
 425                 if (alloc_long_term_buff(adapter, &tx_pool->long_term_buff,
 426                                          adapter->max_tx_entries_per_subcrq *
 427                                          adapter->req_mtu))
 428                         goto tx_ltb_alloc_failed;
 429
 430                 tx_pool->free_map =
 431                     kcalloc(adapter->max_tx_entries_per_subcrq,
 432                             sizeof(int), GFP_KERNEL);
 433                 if (!tx_pool->free_map)
 434                         goto tx_fm_alloc_failed;
 435
 436                 for (j = 0; j < adapter->max_tx_entries_per_subcrq; j++)
 437                         tx_pool->free_map[j] = j;
 438
 439                 tx_pool->consumer_index = 0;
 440                 tx_pool->producer_index = 0;
 441         }
 442         adapter->bounce_buffer_size =
 443             (netdev->mtu + ETH_HLEN - 1) / PAGE_SIZE + 1;
 444         adapter->bounce_buffer = kmalloc(adapter->bounce_buffer_size,
 445                                          GFP_KERNEL);
 446         if (!adapter->bounce_buffer)
 447                 goto bounce_alloc_failed;
 448
 449         adapter->bounce_buffer_dma = dma_map_single(dev, adapter->bounce_buffer,
 450                                                     adapter->bounce_buffer_size,
 451                                                     DMA_TO_DEVICE);
 452         if (dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
 453                 dev_err(dev, "Couldn't map tx bounce buffer\n");
 454                 goto bounce_map_failed;
 455         }
 456         replenish_pools(adapter);
 457
 458         /* We're ready to receive frames, enable the sub-crq interrupts and
 459          * set the logical link state to up
 460          */
 461         for (i = 0; i < adapter->req_rx_queues; i++)
 462                 enable_scrq_irq(adapter, adapter->rx_scrq[i]);
 463
 464         for (i = 0; i < adapter->req_tx_queues; i++)
 465                 enable_scrq_irq(adapter, adapter->tx_scrq[i]);
 466
 467         memset(&crq, 0, sizeof(crq));
 468         crq.logical_link_state.first = IBMVNIC_CRQ_CMD;
 469         crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
 470         crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_UP;
 471         ibmvnic_send_crq(adapter, &crq);
 472
 473         netif_tx_start_all_queues(netdev);
 474
 475         return 0;
 476
 477 bounce_map_failed:
 478         kfree(adapter->bounce_buffer);
 479 bounce_alloc_failed:
 480         i = tx_subcrqs - 1;
 481         kfree(adapter->tx_pool[i].free_map);
 482 tx_fm_alloc_failed:
 483         free_long_term_buff(adapter, &adapter->tx_pool[i].long_term_buff);
 484 tx_ltb_alloc_failed:
 485         kfree(adapter->tx_pool[i].tx_buff);
 486 tx_pool_alloc_failed:
 487         for (j = 0; j < i; j++) {
 488                 kfree(adapter->tx_pool[j].tx_buff);
 489                 free_long_term_buff(adapter,
 490                                     &adapter->tx_pool[j].long_term_buff);
 491                 kfree(adapter->tx_pool[j].free_map);
 492         }
 493         kfree(adapter->tx_pool);
 494         adapter->tx_pool = NULL;
 495 tx_pool_arr_alloc_failed:
 496         i = rxadd_subcrqs;
 497 rx_pool_alloc_failed:
 498         for (j = 0; j < i; j++) {
 499                 free_rx_pool(adapter, &adapter->rx_pool[j]);
 500                 free_long_term_buff(adapter,
 501                                     &adapter->rx_pool[j].long_term_buff);
 502         }
 503         kfree(adapter->rx_pool);
 504         adapter->rx_pool = NULL;
 505 rx_pool_arr_alloc_failed:
 506         for (i = 0; i < adapter->req_rx_queues; i++)
 507                 napi_enable(&adapter->napi[i]);
 508 alloc_napi_failed:
 509         return -ENOMEM;
 510 }
 511
 512 static int ibmvnic_close(struct net_device *netdev)
 513 {
 514         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
 515         struct device *dev = &adapter->vdev->dev;
 516         union ibmvnic_crq crq;
 517         int i;
 518
 519         adapter->closing = true;
 520
 521         for (i = 0; i < adapter->req_rx_queues; i++)
 522                 napi_disable(&adapter->napi[i]);
 523
 524         netif_tx_stop_all_queues(netdev);
 525
 526         if (adapter->bounce_buffer) {
 527                 if (!dma_mapping_error(dev, adapter->bounce_buffer_dma)) {
 528                         dma_unmap_single(&adapter->vdev->dev,
 529                                          adapter->bounce_buffer_dma,
 530                                          adapter->bounce_buffer_size,
 531                                          DMA_BIDIRECTIONAL);
 532                         adapter->bounce_buffer_dma = DMA_ERROR_CODE;
 533                 }
 534                 kfree(adapter->bounce_buffer);
 535                 adapter->bounce_buffer = NULL;
 536         }
 537
 538         memset(&crq, 0, sizeof(crq));
 539         crq.logical_link_state.first = IBMVNIC_CRQ_CMD;
 540         crq.logical_link_state.cmd = LOGICAL_LINK_STATE;
 541         crq.logical_link_state.link_state = IBMVNIC_LOGICAL_LNK_DN;
 542         ibmvnic_send_crq(adapter, &crq);
 543
 544         for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
 545              i++) {
 546                 kfree(adapter->tx_pool[i].tx_buff);
 547                 free_long_term_buff(adapter,
 548                                     &adapter->tx_pool[i].long_term_buff);
 549                 kfree(adapter->tx_pool[i].free_map);
 550         }
 551         kfree(adapter->tx_pool);
 552         adapter->tx_pool = NULL;
 553
 554         for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
 555              i++) {
 556                 free_rx_pool(adapter, &adapter->rx_pool[i]);
 557                 free_long_term_buff(adapter,
 558                                     &adapter->rx_pool[i].long_term_buff);
 559         }
 560         kfree(adapter->rx_pool);
 561         adapter->rx_pool = NULL;
 562
 563         adapter->closing = false;
 564
 565         return 0;
 566 }
 567
 568 /**
 569  * build_hdr_data - creates L2/L3/L4 header data buffer
 570  * @hdr_field - bitfield determining needed headers
 571  * @skb - socket buffer
 572  * @hdr_len - array of header lengths
 573  * @tot_len - total length of data
 574  *
 575  * Reads hdr_field to determine which headers are needed by firmware.
 576  * Builds a buffer containing these headers.  Saves individual header
 577  * lengths and total buffer length to be used to build descriptors.
 578  */
 579 static int build_hdr_data(u8 hdr_field, struct sk_buff *skb,
 580                           int *hdr_len, u8 *hdr_data)
 581 {
 582         int len = 0;
 583         u8 *hdr;
 584
 585         hdr_len[0] = sizeof(struct ethhdr);
 586
 587         if (skb->protocol == htons(ETH_P_IP)) {
 588                 hdr_len[1] = ip_hdr(skb)->ihl * 4;
 589                 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
 590                         hdr_len[2] = tcp_hdrlen(skb);
 591                 else if (ip_hdr(skb)->protocol == IPPROTO_UDP)
 592                         hdr_len[2] = sizeof(struct udphdr);
 593         } else if (skb->protocol == htons(ETH_P_IPV6)) {
 594                 hdr_len[1] = sizeof(struct ipv6hdr);
 595                 if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
 596                         hdr_len[2] = tcp_hdrlen(skb);
 597                 else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)
 598                         hdr_len[2] = sizeof(struct udphdr);
 599         }
 600
 601         memset(hdr_data, 0, 120);
 602         if ((hdr_field >> 6) & 1) {
 603                 hdr = skb_mac_header(skb);
 604                 memcpy(hdr_data, hdr, hdr_len[0]);
 605                 len += hdr_len[0];
 606         }
 607
 608         if ((hdr_field >> 5) & 1) {
 609                 hdr = skb_network_header(skb);
 610                 memcpy(hdr_data + len, hdr, hdr_len[1]);
 611                 len += hdr_len[1];
 612         }
 613
 614         if ((hdr_field >> 4) & 1) {
 615                 hdr = skb_transport_header(skb);
 616                 memcpy(hdr_data + len, hdr, hdr_len[2]);
 617                 len += hdr_len[2];
 618         }
 619         return len;
 620 }
 621
 622 /**
 623  * create_hdr_descs - create header and header extension descriptors
 624  * @hdr_field - bitfield determining needed headers
 625  * @data - buffer containing header data
 626  * @len - length of data buffer
 627  * @hdr_len - array of individual header lengths
 628  * @scrq_arr - descriptor array
 629  *
 630  * Creates header and, if needed, header extension descriptors and
 631  * places them in a descriptor array, scrq_arr
 632  */
 633
 634 static void create_hdr_descs(u8 hdr_field, u8 *hdr_data, int len, int *hdr_len,
 635                              union sub_crq *scrq_arr)
 636 {
 637         union sub_crq hdr_desc;
 638         int tmp_len = len;
 639         u8 *data, *cur;
 640         int tmp;
 641
 642         while (tmp_len > 0) {
 643                 cur = hdr_data + len - tmp_len;
 644
 645                 memset(&hdr_desc, 0, sizeof(hdr_desc));
 646                 if (cur != hdr_data) {
 647                         data = hdr_desc.hdr_ext.data;
 648                         tmp = tmp_len > 29 ? 29 : tmp_len;
 649                         hdr_desc.hdr_ext.first = IBMVNIC_CRQ_CMD;
 650                         hdr_desc.hdr_ext.type = IBMVNIC_HDR_EXT_DESC;
 651                         hdr_desc.hdr_ext.len = tmp;
 652                 } else {
 653                         data = hdr_desc.hdr.data;
 654                         tmp = tmp_len > 24 ? 24 : tmp_len;
 655                         hdr_desc.hdr.first = IBMVNIC_CRQ_CMD;
 656                         hdr_desc.hdr.type = IBMVNIC_HDR_DESC;
 657                         hdr_desc.hdr.len = tmp;
 658                         hdr_desc.hdr.l2_len = (u8)hdr_len[0];
 659                         hdr_desc.hdr.l3_len = cpu_to_be16((u16)hdr_len[1]);
 660                         hdr_desc.hdr.l4_len = (u8)hdr_len[2];
 661                         hdr_desc.hdr.flag = hdr_field << 1;
 662                 }
 663                 memcpy(data, cur, tmp);
 664                 tmp_len -= tmp;
 665                 *scrq_arr = hdr_desc;
 666                 scrq_arr++;
 667         }
 668 }
 669
 670 /**
 671  * build_hdr_descs_arr - build a header descriptor array
 672  * @skb - socket buffer
 673  * @num_entries - number of descriptors to be sent
 674  * @subcrq - first TX descriptor
 675  * @hdr_field - bit field determining which headers will be sent
 676  *
 677  * This function will build a TX descriptor array with applicable
 678  * L2/L3/L4 packet header descriptors to be sent by send_subcrq_indirect.
 679  */
 680
 681 static void build_hdr_descs_arr(struct ibmvnic_tx_buff *txbuff,
 682                                 int *num_entries, u8 hdr_field)
 683 {
 684         int hdr_len[3] = {0, 0, 0};
 685         int tot_len, len;
 686         u8 *hdr_data = txbuff->hdr_data;
 687
 688         tot_len = build_hdr_data(hdr_field, txbuff->skb, hdr_len,
 689                                  txbuff->hdr_data);
 690         len = tot_len;
 691         len -= 24;
 692         if (len > 0)
 693                 num_entries += len % 29 ? len / 29 + 1 : len / 29;
 694         create_hdr_descs(hdr_field, hdr_data, tot_len, hdr_len,
 695                          txbuff->indir_arr + 1);
 696 }
 697
 698 static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev)
 699 {
 700         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
 701         int queue_num = skb_get_queue_mapping(skb);
 702         u8 *hdrs = (u8 *)&adapter->tx_rx_desc_req;
 703         struct device *dev = &adapter->vdev->dev;
 704         struct ibmvnic_tx_buff *tx_buff = NULL;
 705         struct ibmvnic_tx_pool *tx_pool;
 706         unsigned int tx_send_failed = 0;
 707         unsigned int tx_map_failed = 0;
 708         unsigned int tx_dropped = 0;
 709         unsigned int tx_packets = 0;
 710         unsigned int tx_bytes = 0;
 711         dma_addr_t data_dma_addr;
 712         struct netdev_queue *txq;
 713         bool used_bounce = false;
 714         unsigned long lpar_rc;
 715         union sub_crq tx_crq;
 716         unsigned int offset;
 717         int num_entries = 1;
 718         unsigned char *dst;
 719         u64 *handle_array;
 720         int index = 0;
 721         int ret = 0;
 722
 723         tx_pool = &adapter->tx_pool[queue_num];
 724         txq = netdev_get_tx_queue(netdev, skb_get_queue_mapping(skb));
 725         handle_array = (u64 *)((u8 *)(adapter->login_rsp_buf) +
 726                                    be32_to_cpu(adapter->login_rsp_buf->
 727                                                off_txsubm_subcrqs));
 728         if (adapter->migrated) {
 729                 tx_send_failed++;
 730                 tx_dropped++;
 731                 ret = NETDEV_TX_BUSY;
 732                 goto out;
 733         }
 734
 735         index = tx_pool->free_map[tx_pool->consumer_index];
 736         offset = index * adapter->req_mtu;
 737         dst = tx_pool->long_term_buff.buff + offset;
 738         memset(dst, 0, adapter->req_mtu);
 739         skb_copy_from_linear_data(skb, dst, skb->len);
 740         data_dma_addr = tx_pool->long_term_buff.addr + offset;
 741
 742         tx_pool->consumer_index =
 743             (tx_pool->consumer_index + 1) %
 744                 adapter->max_tx_entries_per_subcrq;
 745
 746         tx_buff = &tx_pool->tx_buff[index];
 747         tx_buff->skb = skb;
 748         tx_buff->data_dma[0] = data_dma_addr;
 749         tx_buff->data_len[0] = skb->len;
 750         tx_buff->index = index;
 751         tx_buff->pool_index = queue_num;
 752         tx_buff->last_frag = true;
 753         tx_buff->used_bounce = used_bounce;
 754
 755         memset(&tx_crq, 0, sizeof(tx_crq));
 756         tx_crq.v1.first = IBMVNIC_CRQ_CMD;
 757         tx_crq.v1.type = IBMVNIC_TX_DESC;
 758         tx_crq.v1.n_crq_elem = 1;
 759         tx_crq.v1.n_sge = 1;
 760         tx_crq.v1.flags1 = IBMVNIC_TX_COMP_NEEDED;
 761         tx_crq.v1.correlator = cpu_to_be32(index);
 762         tx_crq.v1.dma_reg = cpu_to_be16(tx_pool->long_term_buff.map_id);
 763         tx_crq.v1.sge_len = cpu_to_be32(skb->len);
 764         tx_crq.v1.ioba = cpu_to_be64(data_dma_addr);
 765
 766         if (adapter->vlan_header_insertion) {
 767                 tx_crq.v1.flags2 |= IBMVNIC_TX_VLAN_INSERT;
 768                 tx_crq.v1.vlan_id = cpu_to_be16(skb->vlan_tci);
 769         }
 770
 771         if (skb->protocol == htons(ETH_P_IP)) {
 772                 if (ip_hdr(skb)->version == 4)
 773                         tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV4;
 774                 else if (ip_hdr(skb)->version == 6)
 775                         tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_IPV6;
 776
 777                 if (ip_hdr(skb)->protocol == IPPROTO_TCP)
 778                         tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_TCP;
 779                 else if (ip_hdr(skb)->protocol != IPPROTO_TCP)
 780                         tx_crq.v1.flags1 |= IBMVNIC_TX_PROT_UDP;
 781         }
 782
 783         if (skb->ip_summed == CHECKSUM_PARTIAL) {
 784                 tx_crq.v1.flags1 |= IBMVNIC_TX_CHKSUM_OFFLOAD;
 785                 hdrs += 2;
 786         }
 787         /* determine if l2/3/4 headers are sent to firmware */
 788         if ((*hdrs >> 7) & 1 &&
 789             (skb->protocol == htons(ETH_P_IP) ||
 790              skb->protocol == htons(ETH_P_IPV6))) {
 791                 build_hdr_descs_arr(tx_buff, &num_entries, *hdrs);
 792                 tx_crq.v1.n_crq_elem = num_entries;
 793                 tx_buff->indir_arr[0] = tx_crq;
 794                 tx_buff->indir_dma = dma_map_single(dev, tx_buff->indir_arr,
 795                                                     sizeof(tx_buff->indir_arr),
 796                                                     DMA_TO_DEVICE);
 797                 if (dma_mapping_error(dev, tx_buff->indir_dma)) {
 798                         if (!firmware_has_feature(FW_FEATURE_CMO))
 799                                 dev_err(dev, "tx: unable to map descriptor array\n");
 800                         tx_map_failed++;
 801                         tx_dropped++;
 802                         ret = NETDEV_TX_BUSY;
 803                         goto out;
 804                 }
 805                 lpar_rc = send_subcrq_indirect(adapter, handle_array[queue_num],
 806                                                (u64)tx_buff->indir_dma,
 807                                                (u64)num_entries);
 808         } else {
 809                 lpar_rc = send_subcrq(adapter, handle_array[queue_num],
 810                                       &tx_crq);
 811         }
 812         if (lpar_rc != H_SUCCESS) {
 813                 dev_err(dev, "tx failed with code %ld\n", lpar_rc);
 814
 815                 if (tx_pool->consumer_index == 0)
 816                         tx_pool->consumer_index =
 817                                 adapter->max_tx_entries_per_subcrq - 1;
 818                 else
 819                         tx_pool->consumer_index--;
 820
 821                 tx_send_failed++;
 822                 tx_dropped++;
 823                 ret = NETDEV_TX_BUSY;
 824                 goto out;
 825         }
 826         tx_packets++;
 827         tx_bytes += skb->len;
 828         txq->trans_start = jiffies;
 829         ret = NETDEV_TX_OK;
 830
 831 out:
 832         netdev->stats.tx_dropped += tx_dropped;
 833         netdev->stats.tx_bytes += tx_bytes;
 834         netdev->stats.tx_packets += tx_packets;
 835         adapter->tx_send_failed += tx_send_failed;
 836         adapter->tx_map_failed += tx_map_failed;
 837
 838         return ret;
 839 }
 840
 841 static void ibmvnic_set_multi(struct net_device *netdev)
 842 {
 843         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
 844         struct netdev_hw_addr *ha;
 845         union ibmvnic_crq crq;
 846
 847         memset(&crq, 0, sizeof(crq));
 848         crq.request_capability.first = IBMVNIC_CRQ_CMD;
 849         crq.request_capability.cmd = REQUEST_CAPABILITY;
 850
 851         if (netdev->flags & IFF_PROMISC) {
 852                 if (!adapter->promisc_supported)
 853                         return;
 854         } else {
 855                 if (netdev->flags & IFF_ALLMULTI) {
 856                         /* Accept all multicast */
 857                         memset(&crq, 0, sizeof(crq));
 858                         crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
 859                         crq.multicast_ctrl.cmd = MULTICAST_CTRL;
 860                         crq.multicast_ctrl.flags = IBMVNIC_ENABLE_ALL;
 861                         ibmvnic_send_crq(adapter, &crq);
 862                 } else if (netdev_mc_empty(netdev)) {
 863                         /* Reject all multicast */
 864                         memset(&crq, 0, sizeof(crq));
 865                         crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
 866                         crq.multicast_ctrl.cmd = MULTICAST_CTRL;
 867                         crq.multicast_ctrl.flags = IBMVNIC_DISABLE_ALL;
 868                         ibmvnic_send_crq(adapter, &crq);
 869                 } else {
 870                         /* Accept one or more multicast(s) */
 871                         netdev_for_each_mc_addr(ha, netdev) {
 872                                 memset(&crq, 0, sizeof(crq));
 873                                 crq.multicast_ctrl.first = IBMVNIC_CRQ_CMD;
 874                                 crq.multicast_ctrl.cmd = MULTICAST_CTRL;
 875                                 crq.multicast_ctrl.flags = IBMVNIC_ENABLE_MC;
 876                                 ether_addr_copy(&crq.multicast_ctrl.mac_addr[0],
 877                                                 ha->addr);
 878                                 ibmvnic_send_crq(adapter, &crq);
 879                         }
 880                 }
 881         }
 882 }
 883
 884 static int ibmvnic_set_mac(struct net_device *netdev, void *p)
 885 {
 886         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
 887         struct sockaddr *addr = p;
 888         union ibmvnic_crq crq;
 889
 890         if (!is_valid_ether_addr(addr->sa_data))
 891                 return -EADDRNOTAVAIL;
 892
 893         memset(&crq, 0, sizeof(crq));
 894         crq.change_mac_addr.first = IBMVNIC_CRQ_CMD;
 895         crq.change_mac_addr.cmd = CHANGE_MAC_ADDR;
 896         ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data);
 897         ibmvnic_send_crq(adapter, &crq);
 898         /* netdev->dev_addr is changed in handle_change_mac_rsp function */
 899         return 0;
 900 }
 901
 902 static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu)
 903 {
 904         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
 905
 906         if (new_mtu > adapter->req_mtu || new_mtu < adapter->min_mtu)
 907                 return -EINVAL;
 908
 909         netdev->mtu = new_mtu;
 910         return 0;
 911 }
 912
 913 static void ibmvnic_tx_timeout(struct net_device *dev)
 914 {
 915         struct ibmvnic_adapter *adapter = netdev_priv(dev);
 916         int rc;
 917
 918         /* Adapter timed out, resetting it */
 919         release_sub_crqs(adapter);
 920         rc = ibmvnic_reset_crq(adapter);
 921         if (rc)
 922                 dev_err(&adapter->vdev->dev, "Adapter timeout, reset failed\n");
 923         else
 924                 ibmvnic_send_crq_init(adapter);
 925 }
 926
 927 static void remove_buff_from_pool(struct ibmvnic_adapter *adapter,
 928                                   struct ibmvnic_rx_buff *rx_buff)
 929 {
 930         struct ibmvnic_rx_pool *pool = &adapter->rx_pool[rx_buff->pool_index];
 931
 932         rx_buff->skb = NULL;
 933
 934         pool->free_map[pool->next_alloc] = (int)(rx_buff - pool->rx_buff);
 935         pool->next_alloc = (pool->next_alloc + 1) % pool->size;
 936
 937         atomic_dec(&pool->available);
 938 }
 939
 940 static int ibmvnic_poll(struct napi_struct *napi, int budget)
 941 {
 942         struct net_device *netdev = napi->dev;
 943         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
 944         int scrq_num = (int)(napi - adapter->napi);
 945         int frames_processed = 0;
 946 restart_poll:
 947         while (frames_processed < budget) {
 948                 struct sk_buff *skb;
 949                 struct ibmvnic_rx_buff *rx_buff;
 950                 union sub_crq *next;
 951                 u32 length;
 952                 u16 offset;
 953                 u8 flags = 0;
 954
 955                 if (!pending_scrq(adapter, adapter->rx_scrq[scrq_num]))
 956                         break;
 957                 next = ibmvnic_next_scrq(adapter, adapter->rx_scrq[scrq_num]);
 958                 rx_buff =
 959                     (struct ibmvnic_rx_buff *)be64_to_cpu(next->
 960                                                           rx_comp.correlator);
 961                 /* do error checking */
 962                 if (next->rx_comp.rc) {
 963                         netdev_err(netdev, "rx error %x\n", next->rx_comp.rc);
 964                         /* free the entry */
 965                         next->rx_comp.first = 0;
 966                         remove_buff_from_pool(adapter, rx_buff);
 967                         break;
 968                 }
 969
 970                 length = be32_to_cpu(next->rx_comp.len);
 971                 offset = be16_to_cpu(next->rx_comp.off_frame_data);
 972                 flags = next->rx_comp.flags;
 973                 skb = rx_buff->skb;
 974                 skb_copy_to_linear_data(skb, rx_buff->data + offset,
 975                                         length);
 976                 skb->vlan_tci = be16_to_cpu(next->rx_comp.vlan_tci);
 977                 /* free the entry */
 978                 next->rx_comp.first = 0;
 979                 remove_buff_from_pool(adapter, rx_buff);
 980
 981                 skb_put(skb, length);
 982                 skb->protocol = eth_type_trans(skb, netdev);
 983
 984                 if (flags & IBMVNIC_IP_CHKSUM_GOOD &&
 985                     flags & IBMVNIC_TCP_UDP_CHKSUM_GOOD) {
 986                         skb->ip_summed = CHECKSUM_UNNECESSARY;
 987                 }
 988
 989                 length = skb->len;
 990                 napi_gro_receive(napi, skb); /* send it up */
 991                 netdev->stats.rx_packets++;
 992                 netdev->stats.rx_bytes += length;
 993                 frames_processed++;
 994         }
 995         replenish_rx_pool(adapter, &adapter->rx_pool[scrq_num]);
 996
 997         if (frames_processed < budget) {
 998                 enable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
 999                 napi_complete(napi);
1000                 if (pending_scrq(adapter, adapter->rx_scrq[scrq_num]) &&
1001                     napi_reschedule(napi)) {
1002                         disable_scrq_irq(adapter, adapter->rx_scrq[scrq_num]);
1003                         goto restart_poll;
1004                 }
1005         }
1006         return frames_processed;
1007 }
1008
1009 #ifdef CONFIG_NET_POLL_CONTROLLER
1010 static void ibmvnic_netpoll_controller(struct net_device *dev)
1011 {
1012         struct ibmvnic_adapter *adapter = netdev_priv(dev);
1013         int i;
1014
1015         replenish_pools(netdev_priv(dev));
1016         for (i = 0; i < adapter->req_rx_queues; i++)
1017                 ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq,
1018                                      adapter->rx_scrq[i]);
1019 }
1020 #endif
1021
1022 static const struct net_device_ops ibmvnic_netdev_ops = {
1023         .ndo_open               = ibmvnic_open,
1024         .ndo_stop               = ibmvnic_close,
1025         .ndo_start_xmit         = ibmvnic_xmit,
1026         .ndo_set_rx_mode        = ibmvnic_set_multi,
1027         .ndo_set_mac_address    = ibmvnic_set_mac,
1028         .ndo_validate_addr      = eth_validate_addr,
1029         .ndo_change_mtu         = ibmvnic_change_mtu,
1030         .ndo_tx_timeout         = ibmvnic_tx_timeout,
1031 #ifdef CONFIG_NET_POLL_CONTROLLER
1032         .ndo_poll_controller    = ibmvnic_netpoll_controller,
1033 #endif
1034 };
1035
1036 /* ethtool functions */
1037
1038 static int ibmvnic_get_settings(struct net_device *netdev,
1039                                 struct ethtool_cmd *cmd)
1040 {
1041         cmd->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg |
1042                           SUPPORTED_FIBRE);
1043         cmd->advertising = (ADVERTISED_1000baseT_Full | ADVERTISED_Autoneg |
1044                             ADVERTISED_FIBRE);
1045         ethtool_cmd_speed_set(cmd, SPEED_1000);
1046         cmd->duplex = DUPLEX_FULL;
1047         cmd->port = PORT_FIBRE;
1048         cmd->phy_address = 0;
1049         cmd->transceiver = XCVR_INTERNAL;
1050         cmd->autoneg = AUTONEG_ENABLE;
1051         cmd->maxtxpkt = 0;
1052         cmd->maxrxpkt = 1;
1053         return 0;
1054 }
1055
1056 static void ibmvnic_get_drvinfo(struct net_device *dev,
1057                                 struct ethtool_drvinfo *info)
1058 {
1059         strlcpy(info->driver, ibmvnic_driver_name, sizeof(info->driver));
1060         strlcpy(info->version, IBMVNIC_DRIVER_VERSION, sizeof(info->version));
1061 }
1062
1063 static u32 ibmvnic_get_msglevel(struct net_device *netdev)
1064 {
1065         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1066
1067         return adapter->msg_enable;
1068 }
1069
1070 static void ibmvnic_set_msglevel(struct net_device *netdev, u32 data)
1071 {
1072         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1073
1074         adapter->msg_enable = data;
1075 }
1076
1077 static u32 ibmvnic_get_link(struct net_device *netdev)
1078 {
1079         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
1080
1081         /* Don't need to send a query because we request a logical link up at
1082          * init and then we wait for link state indications
1083          */
1084         return adapter->logical_link_state;
1085 }
1086
1087 static void ibmvnic_get_ringparam(struct net_device *netdev,
1088                                   struct ethtool_ringparam *ring)
1089 {
1090         ring->rx_max_pending = 0;
1091         ring->tx_max_pending = 0;
1092         ring->rx_mini_max_pending = 0;
1093         ring->rx_jumbo_max_pending = 0;
1094         ring->rx_pending = 0;
1095         ring->tx_pending = 0;
1096         ring->rx_mini_pending = 0;
1097         ring->rx_jumbo_pending = 0;
1098 }
1099
1100 static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1101 {
1102         int i;
1103
1104         if (stringset != ETH_SS_STATS)
1105                 return;
1106
1107         for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++, data += ETH_GSTRING_LEN)
1108                 memcpy(data, ibmvnic_stats[i].name, ETH_GSTRING_LEN);
1109 }
1110
1111 static int ibmvnic_get_sset_count(struct net_device *dev, int sset)
1112 {
1113         switch (sset) {
1114         case ETH_SS_STATS:
1115                 return ARRAY_SIZE(ibmvnic_stats);
1116         default:
1117                 return -EOPNOTSUPP;
1118         }
1119 }
1120
1121 static void ibmvnic_get_ethtool_stats(struct net_device *dev,
1122                                       struct ethtool_stats *stats, u64 *data)
1123 {
1124         struct ibmvnic_adapter *adapter = netdev_priv(dev);
1125         union ibmvnic_crq crq;
1126         int i;
1127
1128         memset(&crq, 0, sizeof(crq));
1129         crq.request_statistics.first = IBMVNIC_CRQ_CMD;
1130         crq.request_statistics.cmd = REQUEST_STATISTICS;
1131         crq.request_statistics.ioba = cpu_to_be32(adapter->stats_token);
1132         crq.request_statistics.len =
1133             cpu_to_be32(sizeof(struct ibmvnic_statistics));
1134         ibmvnic_send_crq(adapter, &crq);
1135
1136         /* Wait for data to be written */
1137         init_completion(&adapter->stats_done);
1138         wait_for_completion(&adapter->stats_done);
1139
1140         for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++)
1141                 data[i] = IBMVNIC_GET_STAT(adapter, ibmvnic_stats[i].offset);
1142 }
1143
1144 static const struct ethtool_ops ibmvnic_ethtool_ops = {
1145         .get_settings           = ibmvnic_get_settings,
1146         .get_drvinfo            = ibmvnic_get_drvinfo,
1147         .get_msglevel           = ibmvnic_get_msglevel,
1148         .set_msglevel           = ibmvnic_set_msglevel,
1149         .get_link               = ibmvnic_get_link,
1150         .get_ringparam          = ibmvnic_get_ringparam,
1151         .get_strings            = ibmvnic_get_strings,
1152         .get_sset_count         = ibmvnic_get_sset_count,
1153         .get_ethtool_stats      = ibmvnic_get_ethtool_stats,
1154 };
1155
1156 /* Routines for managing CRQs/sCRQs  */
1157
1158 static void release_sub_crq_queue(struct ibmvnic_adapter *adapter,
1159                                   struct ibmvnic_sub_crq_queue *scrq)
1160 {
1161         struct device *dev = &adapter->vdev->dev;
1162         long rc;
1163
1164         netdev_dbg(adapter->netdev, "Releasing sub-CRQ\n");
1165
1166         /* Close the sub-crqs */
1167         do {
1168                 rc = plpar_hcall_norets(H_FREE_SUB_CRQ,
1169                                         adapter->vdev->unit_address,
1170                                         scrq->crq_num);
1171         } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
1172
1173         dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
1174                          DMA_BIDIRECTIONAL);
1175         free_pages((unsigned long)scrq->msgs, 2);
1176         kfree(scrq);
1177 }
1178
1179 static struct ibmvnic_sub_crq_queue *init_sub_crq_queue(struct ibmvnic_adapter
1180                                                         *adapter)
1181 {
1182         struct device *dev = &adapter->vdev->dev;
1183         struct ibmvnic_sub_crq_queue *scrq;
1184         int rc;
1185
1186         scrq = kmalloc(sizeof(*scrq), GFP_ATOMIC);
1187         if (!scrq)
1188                 return NULL;
1189
1190         scrq->msgs = (union sub_crq *)__get_free_pages(GFP_KERNEL, 2);
1191         memset(scrq->msgs, 0, 4 * PAGE_SIZE);
1192         if (!scrq->msgs) {
1193                 dev_warn(dev, "Couldn't allocate crq queue messages page\n");
1194                 goto zero_page_failed;
1195         }
1196
1197         scrq->msg_token = dma_map_single(dev, scrq->msgs, 4 * PAGE_SIZE,
1198                                          DMA_BIDIRECTIONAL);
1199         if (dma_mapping_error(dev, scrq->msg_token)) {
1200                 dev_warn(dev, "Couldn't map crq queue messages page\n");
1201                 goto map_failed;
1202         }
1203
1204         rc = h_reg_sub_crq(adapter->vdev->unit_address, scrq->msg_token,
1205                            4 * PAGE_SIZE, &scrq->crq_num, &scrq->hw_irq);
1206
1207         if (rc == H_RESOURCE)
1208                 rc = ibmvnic_reset_crq(adapter);
1209
1210         if (rc == H_CLOSED) {
1211                 dev_warn(dev, "Partner adapter not ready, waiting.\n");
1212         } else if (rc) {
1213                 dev_warn(dev, "Error %d registering sub-crq\n", rc);
1214                 goto reg_failed;
1215         }
1216
1217         scrq->adapter = adapter;
1218         scrq->size = 4 * PAGE_SIZE / sizeof(*scrq->msgs);
1219         scrq->cur = 0;
1220         scrq->rx_skb_top = NULL;
1221         spin_lock_init(&scrq->lock);
1222
1223         netdev_dbg(adapter->netdev,
1224                    "sub-crq initialized, num %lx, hw_irq=%lx, irq=%x\n",
1225                    scrq->crq_num, scrq->hw_irq, scrq->irq);
1226
1227         return scrq;
1228
1229 reg_failed:
1230         dma_unmap_single(dev, scrq->msg_token, 4 * PAGE_SIZE,
1231                          DMA_BIDIRECTIONAL);
1232 map_failed:
1233         free_pages((unsigned long)scrq->msgs, 2);
1234 zero_page_failed:
1235         kfree(scrq);
1236
1237         return NULL;
1238 }
1239
1240 static void release_sub_crqs(struct ibmvnic_adapter *adapter)
1241 {
1242         int i;
1243
1244         if (adapter->tx_scrq) {
1245                 for (i = 0; i < adapter->req_tx_queues; i++)
1246                         if (adapter->tx_scrq[i]) {
1247                                 free_irq(adapter->tx_scrq[i]->irq,
1248                                          adapter->tx_scrq[i]);
1249                                 irq_dispose_mapping(adapter->tx_scrq[i]->irq);
1250                                 release_sub_crq_queue(adapter,
1251                                                       adapter->tx_scrq[i]);
1252                         }
1253                 adapter->tx_scrq = NULL;
1254         }
1255
1256         if (adapter->rx_scrq) {
1257                 for (i = 0; i < adapter->req_rx_queues; i++)
1258                         if (adapter->rx_scrq[i]) {
1259                                 free_irq(adapter->rx_scrq[i]->irq,
1260                                          adapter->rx_scrq[i]);
1261                                 irq_dispose_mapping(adapter->rx_scrq[i]->irq);
1262                                 release_sub_crq_queue(adapter,
1263                                                       adapter->rx_scrq[i]);
1264                         }
1265                 adapter->rx_scrq = NULL;
1266         }
1267
1268         adapter->requested_caps = 0;
1269 }
1270
1271 static void release_sub_crqs_no_irqs(struct ibmvnic_adapter *adapter)
1272 {
1273         int i;
1274
1275         if (adapter->tx_scrq) {
1276                 for (i = 0; i < adapter->req_tx_queues; i++)
1277                         if (adapter->tx_scrq[i])
1278                                 release_sub_crq_queue(adapter,
1279                                                       adapter->tx_scrq[i]);
1280                 adapter->tx_scrq = NULL;
1281         }
1282
1283         if (adapter->rx_scrq) {
1284                 for (i = 0; i < adapter->req_rx_queues; i++)
1285                         if (adapter->rx_scrq[i])
1286                                 release_sub_crq_queue(adapter,
1287                                                       adapter->rx_scrq[i]);
1288                 adapter->rx_scrq = NULL;
1289         }
1290
1291         adapter->requested_caps = 0;
1292 }
1293
1294 static int disable_scrq_irq(struct ibmvnic_adapter *adapter,
1295                             struct ibmvnic_sub_crq_queue *scrq)
1296 {
1297         struct device *dev = &adapter->vdev->dev;
1298         unsigned long rc;
1299
1300         rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
1301                                 H_DISABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
1302         if (rc)
1303                 dev_err(dev, "Couldn't disable scrq irq 0x%lx. rc=%ld\n",
1304                         scrq->hw_irq, rc);
1305         return rc;
1306 }
1307
1308 static int enable_scrq_irq(struct ibmvnic_adapter *adapter,
1309                            struct ibmvnic_sub_crq_queue *scrq)
1310 {
1311         struct device *dev = &adapter->vdev->dev;
1312         unsigned long rc;
1313
1314         if (scrq->hw_irq > 0x100000000ULL) {
1315                 dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq);
1316                 return 1;
1317         }
1318
1319         rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address,
1320                                 H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0);
1321         if (rc)
1322                 dev_err(dev, "Couldn't enable scrq irq 0x%lx. rc=%ld\n",
1323                         scrq->hw_irq, rc);
1324         return rc;
1325 }
1326
1327 static int ibmvnic_complete_tx(struct ibmvnic_adapter *adapter,
1328                                struct ibmvnic_sub_crq_queue *scrq)
1329 {
1330         struct device *dev = &adapter->vdev->dev;
1331         struct ibmvnic_tx_buff *txbuff;
1332         union sub_crq *next;
1333         int index;
1334         int i, j;
1335         u8 first;
1336
1337 restart_loop:
1338         while (pending_scrq(adapter, scrq)) {
1339                 unsigned int pool = scrq->pool_index;
1340
1341                 next = ibmvnic_next_scrq(adapter, scrq);
1342                 for (i = 0; i < next->tx_comp.num_comps; i++) {
1343                         if (next->tx_comp.rcs[i]) {
1344                                 dev_err(dev, "tx error %x\n",
1345                                         next->tx_comp.rcs[i]);
1346                                 continue;
1347                         }
1348                         index = be32_to_cpu(next->tx_comp.correlators[i]);
1349                         txbuff = &adapter->tx_pool[pool].tx_buff[index];
1350
1351                         for (j = 0; j < IBMVNIC_MAX_FRAGS_PER_CRQ; j++) {
1352                                 if (!txbuff->data_dma[j])
1353                                         continue;
1354
1355                                 txbuff->data_dma[j] = 0;
1356                                 txbuff->used_bounce = false;
1357                         }
1358                         /* if sub_crq was sent indirectly */
1359                         first = txbuff->indir_arr[0].generic.first;
1360                         if (first == IBMVNIC_CRQ_CMD) {
1361                                 dma_unmap_single(dev, txbuff->indir_dma,
1362                                                  sizeof(txbuff->indir_arr),
1363                                                  DMA_TO_DEVICE);
1364                         }
1365
1366                         if (txbuff->last_frag)
1367                                 dev_kfree_skb_any(txbuff->skb);
1368
1369                         adapter->tx_pool[pool].free_map[adapter->tx_pool[pool].
1370                                                      producer_index] = index;
1371                         adapter->tx_pool[pool].producer_index =
1372                             (adapter->tx_pool[pool].producer_index + 1) %
1373                             adapter->max_tx_entries_per_subcrq;
1374                 }
1375                 /* remove tx_comp scrq*/
1376                 next->tx_comp.first = 0;
1377         }
1378
1379         enable_scrq_irq(adapter, scrq);
1380
1381         if (pending_scrq(adapter, scrq)) {
1382                 disable_scrq_irq(adapter, scrq);
1383                 goto restart_loop;
1384         }
1385
1386         return 0;
1387 }
1388
1389 static irqreturn_t ibmvnic_interrupt_tx(int irq, void *instance)
1390 {
1391         struct ibmvnic_sub_crq_queue *scrq = instance;
1392         struct ibmvnic_adapter *adapter = scrq->adapter;
1393
1394         disable_scrq_irq(adapter, scrq);
1395         ibmvnic_complete_tx(adapter, scrq);
1396
1397         return IRQ_HANDLED;
1398 }
1399
1400 static irqreturn_t ibmvnic_interrupt_rx(int irq, void *instance)
1401 {
1402         struct ibmvnic_sub_crq_queue *scrq = instance;
1403         struct ibmvnic_adapter *adapter = scrq->adapter;
1404
1405         if (napi_schedule_prep(&adapter->napi[scrq->scrq_num])) {
1406                 disable_scrq_irq(adapter, scrq);
1407                 __napi_schedule(&adapter->napi[scrq->scrq_num]);
1408         }
1409
1410         return IRQ_HANDLED;
1411 }
1412
1413 static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter)
1414 {
1415         struct device *dev = &adapter->vdev->dev;
1416         struct ibmvnic_sub_crq_queue *scrq;
1417         int i = 0, j = 0;
1418         int rc = 0;
1419
1420         for (i = 0; i < adapter->req_tx_queues; i++) {
1421                 scrq = adapter->tx_scrq[i];
1422                 scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
1423
1424                 if (scrq->irq == NO_IRQ) {
1425                         rc = -EINVAL;
1426                         dev_err(dev, "Error mapping irq\n");
1427                         goto req_tx_irq_failed;
1428                 }
1429
1430                 rc = request_irq(scrq->irq, ibmvnic_interrupt_tx,
1431                                  0, "ibmvnic_tx", scrq);
1432
1433                 if (rc) {
1434                         dev_err(dev, "Couldn't register tx irq 0x%x. rc=%d\n",
1435                                 scrq->irq, rc);
1436                         irq_dispose_mapping(scrq->irq);
1437                         goto req_rx_irq_failed;
1438                 }
1439         }
1440
1441         for (i = 0; i < adapter->req_rx_queues; i++) {
1442                 scrq = adapter->rx_scrq[i];
1443                 scrq->irq = irq_create_mapping(NULL, scrq->hw_irq);
1444                 if (scrq->irq == NO_IRQ) {
1445                         rc = -EINVAL;
1446                         dev_err(dev, "Error mapping irq\n");
1447                         goto req_rx_irq_failed;
1448                 }
1449                 rc = request_irq(scrq->irq, ibmvnic_interrupt_rx,
1450                                  0, "ibmvnic_rx", scrq);
1451                 if (rc) {
1452                         dev_err(dev, "Couldn't register rx irq 0x%x. rc=%d\n",
1453                                 scrq->irq, rc);
1454                         irq_dispose_mapping(scrq->irq);
1455                         goto req_rx_irq_failed;
1456                 }
1457         }
1458         return rc;
1459
1460 req_rx_irq_failed:
1461         for (j = 0; j < i; j++)
1462                 free_irq(adapter->rx_scrq[j]->irq, adapter->rx_scrq[j]);
1463                 irq_dispose_mapping(adapter->rx_scrq[j]->irq);
1464         i = adapter->req_tx_queues;
1465 req_tx_irq_failed:
1466         for (j = 0; j < i; j++)
1467                 free_irq(adapter->tx_scrq[j]->irq, adapter->tx_scrq[j]);
1468                 irq_dispose_mapping(adapter->rx_scrq[j]->irq);
1469         release_sub_crqs_no_irqs(adapter);
1470         return rc;
1471 }
1472
1473 static void init_sub_crqs(struct ibmvnic_adapter *adapter, int retry)
1474 {
1475         struct device *dev = &adapter->vdev->dev;
1476         struct ibmvnic_sub_crq_queue **allqueues;
1477         int registered_queues = 0;
1478         union ibmvnic_crq crq;
1479         int total_queues;
1480         int more = 0;
1481         int i;
1482
1483         if (!retry) {
1484                 /* Sub-CRQ entries are 32 byte long */
1485                 int entries_page = 4 * PAGE_SIZE / (sizeof(u64) * 4);
1486
1487                 if (adapter->min_tx_entries_per_subcrq > entries_page ||
1488                     adapter->min_rx_add_entries_per_subcrq > entries_page) {
1489                         dev_err(dev, "Fatal, invalid entries per sub-crq\n");
1490                         goto allqueues_failed;
1491                 }
1492
1493                 /* Get the minimum between the queried max and the entries
1494                  * that fit in our PAGE_SIZE
1495                  */
1496                 adapter->req_tx_entries_per_subcrq =
1497                     adapter->max_tx_entries_per_subcrq > entries_page ?
1498                     entries_page : adapter->max_tx_entries_per_subcrq;
1499                 adapter->req_rx_add_entries_per_subcrq =
1500                     adapter->max_rx_add_entries_per_subcrq > entries_page ?
1501                     entries_page : adapter->max_rx_add_entries_per_subcrq;
1502
1503                 /* Choosing the maximum number of queues supported by firmware*/
1504                 adapter->req_tx_queues = adapter->max_tx_queues;
1505                 adapter->req_rx_queues = adapter->max_rx_queues;
1506                 adapter->req_rx_add_queues = adapter->max_rx_add_queues;
1507
1508                 adapter->req_mtu = adapter->max_mtu;
1509         }
1510
1511         total_queues = adapter->req_tx_queues + adapter->req_rx_queues;
1512
1513         allqueues = kcalloc(total_queues, sizeof(*allqueues), GFP_ATOMIC);
1514         if (!allqueues)
1515                 goto allqueues_failed;
1516
1517         for (i = 0; i < total_queues; i++) {
1518                 allqueues[i] = init_sub_crq_queue(adapter);
1519                 if (!allqueues[i]) {
1520                         dev_warn(dev, "Couldn't allocate all sub-crqs\n");
1521                         break;
1522                 }
1523                 registered_queues++;
1524         }
1525
1526         /* Make sure we were able to register the minimum number of queues */
1527         if (registered_queues <
1528             adapter->min_tx_queues + adapter->min_rx_queues) {
1529                 dev_err(dev, "Fatal: Couldn't init  min number of sub-crqs\n");
1530                 goto tx_failed;
1531         }
1532
1533         /* Distribute the failed allocated queues*/
1534         for (i = 0; i < total_queues - registered_queues + more ; i++) {
1535                 netdev_dbg(adapter->netdev, "Reducing number of queues\n");
1536                 switch (i % 3) {
1537                 case 0:
1538                         if (adapter->req_rx_queues > adapter->min_rx_queues)
1539                                 adapter->req_rx_queues--;
1540                         else
1541                                 more++;
1542                         break;
1543                 case 1:
1544                         if (adapter->req_tx_queues > adapter->min_tx_queues)
1545                                 adapter->req_tx_queues--;
1546                         else
1547                                 more++;
1548                         break;
1549                 }
1550         }
1551
1552         adapter->tx_scrq = kcalloc(adapter->req_tx_queues,
1553                                    sizeof(*adapter->tx_scrq), GFP_ATOMIC);
1554         if (!adapter->tx_scrq)
1555                 goto tx_failed;
1556
1557         for (i = 0; i < adapter->req_tx_queues; i++) {
1558                 adapter->tx_scrq[i] = allqueues[i];
1559                 adapter->tx_scrq[i]->pool_index = i;
1560         }
1561
1562         adapter->rx_scrq = kcalloc(adapter->req_rx_queues,
1563                                    sizeof(*adapter->rx_scrq), GFP_ATOMIC);
1564         if (!adapter->rx_scrq)
1565                 goto rx_failed;
1566
1567         for (i = 0; i < adapter->req_rx_queues; i++) {
1568                 adapter->rx_scrq[i] = allqueues[i + adapter->req_tx_queues];
1569                 adapter->rx_scrq[i]->scrq_num = i;
1570         }
1571
1572         memset(&crq, 0, sizeof(crq));
1573         crq.request_capability.first = IBMVNIC_CRQ_CMD;
1574         crq.request_capability.cmd = REQUEST_CAPABILITY;
1575
1576         crq.request_capability.capability = cpu_to_be16(REQ_TX_QUEUES);
1577         crq.request_capability.number = cpu_to_be64(adapter->req_tx_queues);
1578         ibmvnic_send_crq(adapter, &crq);
1579
1580         crq.request_capability.capability = cpu_to_be16(REQ_RX_QUEUES);
1581         crq.request_capability.number = cpu_to_be64(adapter->req_rx_queues);
1582         ibmvnic_send_crq(adapter, &crq);
1583
1584         crq.request_capability.capability = cpu_to_be16(REQ_RX_ADD_QUEUES);
1585         crq.request_capability.number = cpu_to_be64(adapter->req_rx_add_queues);
1586         ibmvnic_send_crq(adapter, &crq);
1587
1588         crq.request_capability.capability =
1589             cpu_to_be16(REQ_TX_ENTRIES_PER_SUBCRQ);
1590         crq.request_capability.number =
1591             cpu_to_be64(adapter->req_tx_entries_per_subcrq);
1592         ibmvnic_send_crq(adapter, &crq);
1593
1594         crq.request_capability.capability =
1595             cpu_to_be16(REQ_RX_ADD_ENTRIES_PER_SUBCRQ);
1596         crq.request_capability.number =
1597             cpu_to_be64(adapter->req_rx_add_entries_per_subcrq);
1598         ibmvnic_send_crq(adapter, &crq);
1599
1600         crq.request_capability.capability = cpu_to_be16(REQ_MTU);
1601         crq.request_capability.number = cpu_to_be64(adapter->req_mtu);
1602         ibmvnic_send_crq(adapter, &crq);
1603
1604         if (adapter->netdev->flags & IFF_PROMISC) {
1605                 if (adapter->promisc_supported) {
1606                         crq.request_capability.capability =
1607                             cpu_to_be16(PROMISC_REQUESTED);
1608                         crq.request_capability.number = cpu_to_be64(1);
1609                         ibmvnic_send_crq(adapter, &crq);
1610                 }
1611         } else {
1612                 crq.request_capability.capability =
1613                     cpu_to_be16(PROMISC_REQUESTED);
1614                 crq.request_capability.number = cpu_to_be64(0);
1615                 ibmvnic_send_crq(adapter, &crq);
1616         }
1617
1618         kfree(allqueues);
1619
1620         return;
1621
1622 rx_failed:
1623         kfree(adapter->tx_scrq);
1624         adapter->tx_scrq = NULL;
1625 tx_failed:
1626         for (i = 0; i < registered_queues; i++)
1627                 release_sub_crq_queue(adapter, allqueues[i]);
1628         kfree(allqueues);
1629 allqueues_failed:
1630         ibmvnic_remove(adapter->vdev);
1631 }
1632
1633 static int pending_scrq(struct ibmvnic_adapter *adapter,
1634                         struct ibmvnic_sub_crq_queue *scrq)
1635 {
1636         union sub_crq *entry = &scrq->msgs[scrq->cur];
1637
1638         if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP || adapter->closing)
1639                 return 1;
1640         else
1641                 return 0;
1642 }
1643
1644 static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *adapter,
1645                                         struct ibmvnic_sub_crq_queue *scrq)
1646 {
1647         union sub_crq *entry;
1648         unsigned long flags;
1649
1650         spin_lock_irqsave(&scrq->lock, flags);
1651         entry = &scrq->msgs[scrq->cur];
1652         if (entry->generic.first & IBMVNIC_CRQ_CMD_RSP) {
1653                 if (++scrq->cur == scrq->size)
1654                         scrq->cur = 0;
1655         } else {
1656                 entry = NULL;
1657         }
1658         spin_unlock_irqrestore(&scrq->lock, flags);
1659
1660         return entry;
1661 }
1662
1663 static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter)
1664 {
1665         struct ibmvnic_crq_queue *queue = &adapter->crq;
1666         union ibmvnic_crq *crq;
1667
1668         crq = &queue->msgs[queue->cur];
1669         if (crq->generic.first & IBMVNIC_CRQ_CMD_RSP) {
1670                 if (++queue->cur == queue->size)
1671                         queue->cur = 0;
1672         } else {
1673                 crq = NULL;
1674         }
1675
1676         return crq;
1677 }
1678
1679 static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle,
1680                        union sub_crq *sub_crq)
1681 {
1682         unsigned int ua = adapter->vdev->unit_address;
1683         struct device *dev = &adapter->vdev->dev;
1684         u64 *u64_crq = (u64 *)sub_crq;
1685         int rc;
1686
1687         netdev_dbg(adapter->netdev,
1688                    "Sending sCRQ %016lx: %016lx %016lx %016lx %016lx\n",
1689                    (unsigned long int)cpu_to_be64(remote_handle),
1690                    (unsigned long int)cpu_to_be64(u64_crq[0]),
1691                    (unsigned long int)cpu_to_be64(u64_crq[1]),
1692                    (unsigned long int)cpu_to_be64(u64_crq[2]),
1693                    (unsigned long int)cpu_to_be64(u64_crq[3]));
1694
1695         /* Make sure the hypervisor sees the complete request */
1696         mb();
1697
1698         rc = plpar_hcall_norets(H_SEND_SUB_CRQ, ua,
1699                                 cpu_to_be64(remote_handle),
1700                                 cpu_to_be64(u64_crq[0]),
1701                                 cpu_to_be64(u64_crq[1]),
1702                                 cpu_to_be64(u64_crq[2]),
1703                                 cpu_to_be64(u64_crq[3]));
1704
1705         if (rc) {
1706                 if (rc == H_CLOSED)
1707                         dev_warn(dev, "CRQ Queue closed\n");
1708                 dev_err(dev, "Send error (rc=%d)\n", rc);
1709         }
1710
1711         return rc;
1712 }
1713
1714 static int send_subcrq_indirect(struct ibmvnic_adapter *adapter,
1715                                 u64 remote_handle, u64 ioba, u64 num_entries)
1716 {
1717         unsigned int ua = adapter->vdev->unit_address;
1718         struct device *dev = &adapter->vdev->dev;
1719         int rc;
1720
1721         /* Make sure the hypervisor sees the complete request */
1722         mb();
1723         rc = plpar_hcall_norets(H_SEND_SUB_CRQ_INDIRECT, ua,
1724                                 cpu_to_be64(remote_handle),
1725                                 ioba, num_entries);
1726
1727         if (rc) {
1728                 if (rc == H_CLOSED)
1729                         dev_warn(dev, "CRQ Queue closed\n");
1730                 dev_err(dev, "Send (indirect) error (rc=%d)\n", rc);
1731         }
1732
1733         return rc;
1734 }
1735
1736 static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter,
1737                             union ibmvnic_crq *crq)
1738 {
1739         unsigned int ua = adapter->vdev->unit_address;
1740         struct device *dev = &adapter->vdev->dev;
1741         u64 *u64_crq = (u64 *)crq;
1742         int rc;
1743
1744         netdev_dbg(adapter->netdev, "Sending CRQ: %016lx %016lx\n",
1745                    (unsigned long int)cpu_to_be64(u64_crq[0]),
1746                    (unsigned long int)cpu_to_be64(u64_crq[1]));
1747
1748         /* Make sure the hypervisor sees the complete request */
1749         mb();
1750
1751         rc = plpar_hcall_norets(H_SEND_CRQ, ua,
1752                                 cpu_to_be64(u64_crq[0]),
1753                                 cpu_to_be64(u64_crq[1]));
1754
1755         if (rc) {
1756                 if (rc == H_CLOSED)
1757                         dev_warn(dev, "CRQ Queue closed\n");
1758                 dev_warn(dev, "Send error (rc=%d)\n", rc);
1759         }
1760
1761         return rc;
1762 }
1763
1764 static int ibmvnic_send_crq_init(struct ibmvnic_adapter *adapter)
1765 {
1766         union ibmvnic_crq crq;
1767
1768         memset(&crq, 0, sizeof(crq));
1769         crq.generic.first = IBMVNIC_CRQ_INIT_CMD;
1770         crq.generic.cmd = IBMVNIC_CRQ_INIT;
1771         netdev_dbg(adapter->netdev, "Sending CRQ init\n");
1772
1773         return ibmvnic_send_crq(adapter, &crq);
1774 }
1775
1776 static int ibmvnic_send_crq_init_complete(struct ibmvnic_adapter *adapter)
1777 {
1778         union ibmvnic_crq crq;
1779
1780         memset(&crq, 0, sizeof(crq));
1781         crq.generic.first = IBMVNIC_CRQ_INIT_CMD;
1782         crq.generic.cmd = IBMVNIC_CRQ_INIT_COMPLETE;
1783         netdev_dbg(adapter->netdev, "Sending CRQ init complete\n");
1784
1785         return ibmvnic_send_crq(adapter, &crq);
1786 }
1787
1788 static int send_version_xchg(struct ibmvnic_adapter *adapter)
1789 {
1790         union ibmvnic_crq crq;
1791
1792         memset(&crq, 0, sizeof(crq));
1793         crq.version_exchange.first = IBMVNIC_CRQ_CMD;
1794         crq.version_exchange.cmd = VERSION_EXCHANGE;
1795         crq.version_exchange.version = cpu_to_be16(ibmvnic_version);
1796
1797         return ibmvnic_send_crq(adapter, &crq);
1798 }
1799
1800 static void send_login(struct ibmvnic_adapter *adapter)
1801 {
1802         struct ibmvnic_login_rsp_buffer *login_rsp_buffer;
1803         struct ibmvnic_login_buffer *login_buffer;
1804         struct ibmvnic_inflight_cmd *inflight_cmd;
1805         struct device *dev = &adapter->vdev->dev;
1806         dma_addr_t rsp_buffer_token;
1807         dma_addr_t buffer_token;
1808         size_t rsp_buffer_size;
1809         union ibmvnic_crq crq;
1810         unsigned long flags;
1811         size_t buffer_size;
1812         __be64 *tx_list_p;
1813         __be64 *rx_list_p;
1814         int i;
1815
1816         buffer_size =
1817             sizeof(struct ibmvnic_login_buffer) +
1818             sizeof(u64) * (adapter->req_tx_queues + adapter->req_rx_queues);
1819
1820         login_buffer = kmalloc(buffer_size, GFP_ATOMIC);
1821         if (!login_buffer)
1822                 goto buf_alloc_failed;
1823
1824         buffer_token = dma_map_single(dev, login_buffer, buffer_size,
1825                                       DMA_TO_DEVICE);
1826         if (dma_mapping_error(dev, buffer_token)) {
1827                 dev_err(dev, "Couldn't map login buffer\n");
1828                 goto buf_map_failed;
1829         }
1830
1831         rsp_buffer_size = sizeof(struct ibmvnic_login_rsp_buffer) +
1832                           sizeof(u64) * adapter->req_tx_queues +
1833                           sizeof(u64) * adapter->req_rx_queues +
1834                           sizeof(u64) * adapter->req_rx_queues +
1835                           sizeof(u8) * IBMVNIC_TX_DESC_VERSIONS;
1836
1837         login_rsp_buffer = kmalloc(rsp_buffer_size, GFP_ATOMIC);
1838         if (!login_rsp_buffer)
1839                 goto buf_rsp_alloc_failed;
1840
1841         rsp_buffer_token = dma_map_single(dev, login_rsp_buffer,
1842                                           rsp_buffer_size, DMA_FROM_DEVICE);
1843         if (dma_mapping_error(dev, rsp_buffer_token)) {
1844                 dev_err(dev, "Couldn't map login rsp buffer\n");
1845                 goto buf_rsp_map_failed;
1846         }
1847         inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC);
1848         if (!inflight_cmd) {
1849                 dev_err(dev, "Couldn't allocate inflight_cmd\n");
1850                 goto inflight_alloc_failed;
1851         }
1852         adapter->login_buf = login_buffer;
1853         adapter->login_buf_token = buffer_token;
1854         adapter->login_buf_sz = buffer_size;
1855         adapter->login_rsp_buf = login_rsp_buffer;
1856         adapter->login_rsp_buf_token = rsp_buffer_token;
1857         adapter->login_rsp_buf_sz = rsp_buffer_size;
1858
1859         login_buffer->len = cpu_to_be32(buffer_size);
1860         login_buffer->version = cpu_to_be32(INITIAL_VERSION_LB);
1861         login_buffer->num_txcomp_subcrqs = cpu_to_be32(adapter->req_tx_queues);
1862         login_buffer->off_txcomp_subcrqs =
1863             cpu_to_be32(sizeof(struct ibmvnic_login_buffer));
1864         login_buffer->num_rxcomp_subcrqs = cpu_to_be32(adapter->req_rx_queues);
1865         login_buffer->off_rxcomp_subcrqs =
1866             cpu_to_be32(sizeof(struct ibmvnic_login_buffer) +
1867                         sizeof(u64) * adapter->req_tx_queues);
1868         login_buffer->login_rsp_ioba = cpu_to_be32(rsp_buffer_token);
1869         login_buffer->login_rsp_len = cpu_to_be32(rsp_buffer_size);
1870
1871         tx_list_p = (__be64 *)((char *)login_buffer +
1872                                       sizeof(struct ibmvnic_login_buffer));
1873         rx_list_p = (__be64 *)((char *)login_buffer +
1874                                       sizeof(struct ibmvnic_login_buffer) +
1875                                       sizeof(u64) * adapter->req_tx_queues);
1876
1877         for (i = 0; i < adapter->req_tx_queues; i++) {
1878                 if (adapter->tx_scrq[i]) {
1879                         tx_list_p[i] = cpu_to_be64(adapter->tx_scrq[i]->
1880                                                    crq_num);
1881                 }
1882         }
1883
1884         for (i = 0; i < adapter->req_rx_queues; i++) {
1885                 if (adapter->rx_scrq[i]) {
1886                         rx_list_p[i] = cpu_to_be64(adapter->rx_scrq[i]->
1887                                                    crq_num);
1888                 }
1889         }
1890
1891         netdev_dbg(adapter->netdev, "Login Buffer:\n");
1892         for (i = 0; i < (adapter->login_buf_sz - 1) / 8 + 1; i++) {
1893                 netdev_dbg(adapter->netdev, "%016lx\n",
1894                            ((unsigned long int *)(adapter->login_buf))[i]);
1895         }
1896
1897         memset(&crq, 0, sizeof(crq));
1898         crq.login.first = IBMVNIC_CRQ_CMD;
1899         crq.login.cmd = LOGIN;
1900         crq.login.ioba = cpu_to_be32(buffer_token);
1901         crq.login.len = cpu_to_be32(buffer_size);
1902
1903         memcpy(&inflight_cmd->crq, &crq, sizeof(crq));
1904
1905         spin_lock_irqsave(&adapter->inflight_lock, flags);
1906         list_add_tail(&inflight_cmd->list, &adapter->inflight);
1907         spin_unlock_irqrestore(&adapter->inflight_lock, flags);
1908
1909         ibmvnic_send_crq(adapter, &crq);
1910
1911         return;
1912
1913 inflight_alloc_failed:
1914         dma_unmap_single(dev, rsp_buffer_token, rsp_buffer_size,
1915                          DMA_FROM_DEVICE);
1916 buf_rsp_map_failed:
1917         kfree(login_rsp_buffer);
1918 buf_rsp_alloc_failed:
1919         dma_unmap_single(dev, buffer_token, buffer_size, DMA_TO_DEVICE);
1920 buf_map_failed:
1921         kfree(login_buffer);
1922 buf_alloc_failed:
1923         return;
1924 }
1925
1926 static void send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr,
1927                              u32 len, u8 map_id)
1928 {
1929         union ibmvnic_crq crq;
1930
1931         memset(&crq, 0, sizeof(crq));
1932         crq.request_map.first = IBMVNIC_CRQ_CMD;
1933         crq.request_map.cmd = REQUEST_MAP;
1934         crq.request_map.map_id = map_id;
1935         crq.request_map.ioba = cpu_to_be32(addr);
1936         crq.request_map.len = cpu_to_be32(len);
1937         ibmvnic_send_crq(adapter, &crq);
1938 }
1939
1940 static void send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id)
1941 {
1942         union ibmvnic_crq crq;
1943
1944         memset(&crq, 0, sizeof(crq));
1945         crq.request_unmap.first = IBMVNIC_CRQ_CMD;
1946         crq.request_unmap.cmd = REQUEST_UNMAP;
1947         crq.request_unmap.map_id = map_id;
1948         ibmvnic_send_crq(adapter, &crq);
1949 }
1950
1951 static void send_map_query(struct ibmvnic_adapter *adapter)
1952 {
1953         union ibmvnic_crq crq;
1954
1955         memset(&crq, 0, sizeof(crq));
1956         crq.query_map.first = IBMVNIC_CRQ_CMD;
1957         crq.query_map.cmd = QUERY_MAP;
1958         ibmvnic_send_crq(adapter, &crq);
1959 }
1960
1961 /* Send a series of CRQs requesting various capabilities of the VNIC server */
1962 static void send_cap_queries(struct ibmvnic_adapter *adapter)
1963 {
1964         union ibmvnic_crq crq;
1965
1966         atomic_set(&adapter->running_cap_queries, 0);
1967         memset(&crq, 0, sizeof(crq));
1968         crq.query_capability.first = IBMVNIC_CRQ_CMD;
1969         crq.query_capability.cmd = QUERY_CAPABILITY;
1970
1971         crq.query_capability.capability = cpu_to_be16(MIN_TX_QUEUES);
1972         atomic_inc(&adapter->running_cap_queries);
1973         ibmvnic_send_crq(adapter, &crq);
1974
1975         crq.query_capability.capability = cpu_to_be16(MIN_RX_QUEUES);
1976         atomic_inc(&adapter->running_cap_queries);
1977         ibmvnic_send_crq(adapter, &crq);
1978
1979         crq.query_capability.capability = cpu_to_be16(MIN_RX_ADD_QUEUES);
1980         atomic_inc(&adapter->running_cap_queries);
1981         ibmvnic_send_crq(adapter, &crq);
1982
1983         crq.query_capability.capability = cpu_to_be16(MAX_TX_QUEUES);
1984         atomic_inc(&adapter->running_cap_queries);
1985         ibmvnic_send_crq(adapter, &crq);
1986
1987         crq.query_capability.capability = cpu_to_be16(MAX_RX_QUEUES);
1988         atomic_inc(&adapter->running_cap_queries);
1989         ibmvnic_send_crq(adapter, &crq);
1990
1991         crq.query_capability.capability = cpu_to_be16(MAX_RX_ADD_QUEUES);
1992         atomic_inc(&adapter->running_cap_queries);
1993         ibmvnic_send_crq(adapter, &crq);
1994
1995         crq.query_capability.capability =
1996             cpu_to_be16(MIN_TX_ENTRIES_PER_SUBCRQ);
1997         atomic_inc(&adapter->running_cap_queries);
1998         ibmvnic_send_crq(adapter, &crq);
1999
2000         crq.query_capability.capability =
2001             cpu_to_be16(MIN_RX_ADD_ENTRIES_PER_SUBCRQ);
2002         atomic_inc(&adapter->running_cap_queries);
2003         ibmvnic_send_crq(adapter, &crq);
2004
2005         crq.query_capability.capability =
2006             cpu_to_be16(MAX_TX_ENTRIES_PER_SUBCRQ);
2007         atomic_inc(&adapter->running_cap_queries);
2008         ibmvnic_send_crq(adapter, &crq);
2009
2010         crq.query_capability.capability =
2011             cpu_to_be16(MAX_RX_ADD_ENTRIES_PER_SUBCRQ);
2012         atomic_inc(&adapter->running_cap_queries);
2013         ibmvnic_send_crq(adapter, &crq);
2014
2015         crq.query_capability.capability = cpu_to_be16(TCP_IP_OFFLOAD);
2016         atomic_inc(&adapter->running_cap_queries);
2017         ibmvnic_send_crq(adapter, &crq);
2018
2019         crq.query_capability.capability = cpu_to_be16(PROMISC_SUPPORTED);
2020         atomic_inc(&adapter->running_cap_queries);
2021         ibmvnic_send_crq(adapter, &crq);
2022
2023         crq.query_capability.capability = cpu_to_be16(MIN_MTU);
2024         atomic_inc(&adapter->running_cap_queries);
2025         ibmvnic_send_crq(adapter, &crq);
2026
2027         crq.query_capability.capability = cpu_to_be16(MAX_MTU);
2028         atomic_inc(&adapter->running_cap_queries);
2029         ibmvnic_send_crq(adapter, &crq);
2030
2031         crq.query_capability.capability = cpu_to_be16(MAX_MULTICAST_FILTERS);
2032         atomic_inc(&adapter->running_cap_queries);
2033         ibmvnic_send_crq(adapter, &crq);
2034
2035         crq.query_capability.capability = cpu_to_be16(VLAN_HEADER_INSERTION);
2036         atomic_inc(&adapter->running_cap_queries);
2037         ibmvnic_send_crq(adapter, &crq);
2038
2039         crq.query_capability.capability = cpu_to_be16(MAX_TX_SG_ENTRIES);
2040         atomic_inc(&adapter->running_cap_queries);
2041         ibmvnic_send_crq(adapter, &crq);
2042
2043         crq.query_capability.capability = cpu_to_be16(RX_SG_SUPPORTED);
2044         atomic_inc(&adapter->running_cap_queries);
2045         ibmvnic_send_crq(adapter, &crq);
2046
2047         crq.query_capability.capability = cpu_to_be16(OPT_TX_COMP_SUB_QUEUES);
2048         atomic_inc(&adapter->running_cap_queries);
2049         ibmvnic_send_crq(adapter, &crq);
2050
2051         crq.query_capability.capability = cpu_to_be16(OPT_RX_COMP_QUEUES);
2052         atomic_inc(&adapter->running_cap_queries);
2053         ibmvnic_send_crq(adapter, &crq);
2054
2055         crq.query_capability.capability =
2056                         cpu_to_be16(OPT_RX_BUFADD_Q_PER_RX_COMP_Q);
2057         atomic_inc(&adapter->running_cap_queries);
2058         ibmvnic_send_crq(adapter, &crq);
2059
2060         crq.query_capability.capability =
2061                         cpu_to_be16(OPT_TX_ENTRIES_PER_SUBCRQ);
2062         atomic_inc(&adapter->running_cap_queries);
2063         ibmvnic_send_crq(adapter, &crq);
2064
2065         crq.query_capability.capability =
2066                         cpu_to_be16(OPT_RXBA_ENTRIES_PER_SUBCRQ);
2067         atomic_inc(&adapter->running_cap_queries);
2068         ibmvnic_send_crq(adapter, &crq);
2069
2070         crq.query_capability.capability = cpu_to_be16(TX_RX_DESC_REQ);
2071         atomic_inc(&adapter->running_cap_queries);
2072         ibmvnic_send_crq(adapter, &crq);
2073 }
2074
2075 static void handle_query_ip_offload_rsp(struct ibmvnic_adapter *adapter)
2076 {
2077         struct device *dev = &adapter->vdev->dev;
2078         struct ibmvnic_query_ip_offload_buffer *buf = &adapter->ip_offload_buf;
2079         union ibmvnic_crq crq;
2080         int i;
2081
2082         dma_unmap_single(dev, adapter->ip_offload_tok,
2083                          sizeof(adapter->ip_offload_buf), DMA_FROM_DEVICE);
2084
2085         netdev_dbg(adapter->netdev, "Query IP Offload Buffer:\n");
2086         for (i = 0; i < (sizeof(adapter->ip_offload_buf) - 1) / 8 + 1; i++)
2087                 netdev_dbg(adapter->netdev, "%016lx\n",
2088                            ((unsigned long int *)(buf))[i]);
2089
2090         netdev_dbg(adapter->netdev, "ipv4_chksum = %d\n", buf->ipv4_chksum);
2091         netdev_dbg(adapter->netdev, "ipv6_chksum = %d\n", buf->ipv6_chksum);
2092         netdev_dbg(adapter->netdev, "tcp_ipv4_chksum = %d\n",
2093                    buf->tcp_ipv4_chksum);
2094         netdev_dbg(adapter->netdev, "tcp_ipv6_chksum = %d\n",
2095                    buf->tcp_ipv6_chksum);
2096         netdev_dbg(adapter->netdev, "udp_ipv4_chksum = %d\n",
2097                    buf->udp_ipv4_chksum);
2098         netdev_dbg(adapter->netdev, "udp_ipv6_chksum = %d\n",
2099                    buf->udp_ipv6_chksum);
2100         netdev_dbg(adapter->netdev, "large_tx_ipv4 = %d\n",
2101                    buf->large_tx_ipv4);
2102         netdev_dbg(adapter->netdev, "large_tx_ipv6 = %d\n",
2103                    buf->large_tx_ipv6);
2104         netdev_dbg(adapter->netdev, "large_rx_ipv4 = %d\n",
2105                    buf->large_rx_ipv4);
2106         netdev_dbg(adapter->netdev, "large_rx_ipv6 = %d\n",
2107                    buf->large_rx_ipv6);
2108         netdev_dbg(adapter->netdev, "max_ipv4_hdr_sz = %d\n",
2109                    buf->max_ipv4_header_size);
2110         netdev_dbg(adapter->netdev, "max_ipv6_hdr_sz = %d\n",
2111                    buf->max_ipv6_header_size);
2112         netdev_dbg(adapter->netdev, "max_tcp_hdr_size = %d\n",
2113                    buf->max_tcp_header_size);
2114         netdev_dbg(adapter->netdev, "max_udp_hdr_size = %d\n",
2115                    buf->max_udp_header_size);
2116         netdev_dbg(adapter->netdev, "max_large_tx_size = %d\n",
2117                    buf->max_large_tx_size);
2118         netdev_dbg(adapter->netdev, "max_large_rx_size = %d\n",
2119                    buf->max_large_rx_size);
2120         netdev_dbg(adapter->netdev, "ipv6_ext_hdr = %d\n",
2121                    buf->ipv6_extension_header);
2122         netdev_dbg(adapter->netdev, "tcp_pseudosum_req = %d\n",
2123                    buf->tcp_pseudosum_req);
2124         netdev_dbg(adapter->netdev, "num_ipv6_ext_hd = %d\n",
2125                    buf->num_ipv6_ext_headers);
2126         netdev_dbg(adapter->netdev, "off_ipv6_ext_hd = %d\n",
2127                    buf->off_ipv6_ext_headers);
2128
2129         adapter->ip_offload_ctrl_tok =
2130             dma_map_single(dev, &adapter->ip_offload_ctrl,
2131                            sizeof(adapter->ip_offload_ctrl), DMA_TO_DEVICE);
2132
2133         if (dma_mapping_error(dev, adapter->ip_offload_ctrl_tok)) {
2134                 dev_err(dev, "Couldn't map ip offload control buffer\n");
2135                 return;
2136         }
2137
2138         adapter->ip_offload_ctrl.version = cpu_to_be32(INITIAL_VERSION_IOB);
2139         adapter->ip_offload_ctrl.tcp_ipv4_chksum = buf->tcp_ipv4_chksum;
2140         adapter->ip_offload_ctrl.udp_ipv4_chksum = buf->udp_ipv4_chksum;
2141         adapter->ip_offload_ctrl.tcp_ipv6_chksum = buf->tcp_ipv6_chksum;
2142         adapter->ip_offload_ctrl.udp_ipv6_chksum = buf->udp_ipv6_chksum;
2143
2144         /* large_tx/rx disabled for now, additional features needed */
2145         adapter->ip_offload_ctrl.large_tx_ipv4 = 0;
2146         adapter->ip_offload_ctrl.large_tx_ipv6 = 0;
2147         adapter->ip_offload_ctrl.large_rx_ipv4 = 0;
2148         adapter->ip_offload_ctrl.large_rx_ipv6 = 0;
2149
2150         adapter->netdev->features = NETIF_F_GSO;
2151
2152         if (buf->tcp_ipv4_chksum || buf->udp_ipv4_chksum)
2153                 adapter->netdev->features |= NETIF_F_IP_CSUM;
2154
2155         if (buf->tcp_ipv6_chksum || buf->udp_ipv6_chksum)
2156                 adapter->netdev->features |= NETIF_F_IPV6_CSUM;
2157
2158         if ((adapter->netdev->features &
2159             (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)))
2160                 adapter->netdev->features |= NETIF_F_RXCSUM;
2161
2162         memset(&crq, 0, sizeof(crq));
2163         crq.control_ip_offload.first = IBMVNIC_CRQ_CMD;
2164         crq.control_ip_offload.cmd = CONTROL_IP_OFFLOAD;
2165         crq.control_ip_offload.len =
2166             cpu_to_be32(sizeof(adapter->ip_offload_ctrl));
2167         crq.control_ip_offload.ioba = cpu_to_be32(adapter->ip_offload_ctrl_tok);
2168         ibmvnic_send_crq(adapter, &crq);
2169 }
2170
2171 static void handle_error_info_rsp(union ibmvnic_crq *crq,
2172                                   struct ibmvnic_adapter *adapter)
2173 {
2174         struct device *dev = &adapter->vdev->dev;
2175         struct ibmvnic_error_buff *error_buff, *tmp;
2176         unsigned long flags;
2177         bool found = false;
2178         int i;
2179
2180         if (!crq->request_error_rsp.rc.code) {
2181                 dev_info(dev, "Request Error Rsp returned with rc=%x\n",
2182                          crq->request_error_rsp.rc.code);
2183                 return;
2184         }
2185
2186         spin_lock_irqsave(&adapter->error_list_lock, flags);
2187         list_for_each_entry_safe(error_buff, tmp, &adapter->errors, list)
2188                 if (error_buff->error_id == crq->request_error_rsp.error_id) {
2189                         found = true;
2190                         list_del(&error_buff->list);
2191                         break;
2192                 }
2193         spin_unlock_irqrestore(&adapter->error_list_lock, flags);
2194
2195         if (!found) {
2196                 dev_err(dev, "Couldn't find error id %x\n",
2197                         crq->request_error_rsp.error_id);
2198                 return;
2199         }
2200
2201         dev_err(dev, "Detailed info for error id %x:",
2202                 crq->request_error_rsp.error_id);
2203
2204         for (i = 0; i < error_buff->len; i++) {
2205                 pr_cont("%02x", (int)error_buff->buff[i]);
2206                 if (i % 8 == 7)
2207                         pr_cont(" ");
2208         }
2209         pr_cont("\n");
2210
2211         dma_unmap_single(dev, error_buff->dma, error_buff->len,
2212                          DMA_FROM_DEVICE);
2213         kfree(error_buff->buff);
2214         kfree(error_buff);
2215 }
2216
2217 static void handle_dump_size_rsp(union ibmvnic_crq *crq,
2218                                  struct ibmvnic_adapter *adapter)
2219 {
2220         int len = be32_to_cpu(crq->request_dump_size_rsp.len);
2221         struct ibmvnic_inflight_cmd *inflight_cmd;
2222         struct device *dev = &adapter->vdev->dev;
2223         union ibmvnic_crq newcrq;
2224         unsigned long flags;
2225
2226         /* allocate and map buffer */
2227         adapter->dump_data = kmalloc(len, GFP_KERNEL);
2228         if (!adapter->dump_data) {
2229                 complete(&adapter->fw_done);
2230                 return;
2231         }
2232
2233         adapter->dump_data_token = dma_map_single(dev, adapter->dump_data, len,
2234                                                   DMA_FROM_DEVICE);
2235
2236         if (dma_mapping_error(dev, adapter->dump_data_token)) {
2237                 if (!firmware_has_feature(FW_FEATURE_CMO))
2238                         dev_err(dev, "Couldn't map dump data\n");
2239                 kfree(adapter->dump_data);
2240                 complete(&adapter->fw_done);
2241                 return;
2242         }
2243
2244         inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC);
2245         if (!inflight_cmd) {
2246                 dma_unmap_single(dev, adapter->dump_data_token, len,
2247                                  DMA_FROM_DEVICE);
2248                 kfree(adapter->dump_data);
2249                 complete(&adapter->fw_done);
2250                 return;
2251         }
2252
2253         memset(&newcrq, 0, sizeof(newcrq));
2254         newcrq.request_dump.first = IBMVNIC_CRQ_CMD;
2255         newcrq.request_dump.cmd = REQUEST_DUMP;
2256         newcrq.request_dump.ioba = cpu_to_be32(adapter->dump_data_token);
2257         newcrq.request_dump.len = cpu_to_be32(adapter->dump_data_size);
2258
2259         memcpy(&inflight_cmd->crq, &newcrq, sizeof(newcrq));
2260
2261         spin_lock_irqsave(&adapter->inflight_lock, flags);
2262         list_add_tail(&inflight_cmd->list, &adapter->inflight);
2263         spin_unlock_irqrestore(&adapter->inflight_lock, flags);
2264
2265         ibmvnic_send_crq(adapter, &newcrq);
2266 }
2267
2268 static void handle_error_indication(union ibmvnic_crq *crq,
2269                                     struct ibmvnic_adapter *adapter)
2270 {
2271         int detail_len = be32_to_cpu(crq->error_indication.detail_error_sz);
2272         struct ibmvnic_inflight_cmd *inflight_cmd;
2273         struct device *dev = &adapter->vdev->dev;
2274         struct ibmvnic_error_buff *error_buff;
2275         union ibmvnic_crq new_crq;
2276         unsigned long flags;
2277
2278         dev_err(dev, "Firmware reports %serror id %x, cause %d\n",
2279                 crq->error_indication.
2280                     flags & IBMVNIC_FATAL_ERROR ? "FATAL " : "",
2281                 crq->error_indication.error_id,
2282                 crq->error_indication.error_cause);
2283
2284         error_buff = kmalloc(sizeof(*error_buff), GFP_ATOMIC);
2285         if (!error_buff)
2286                 return;
2287
2288         error_buff->buff = kmalloc(detail_len, GFP_ATOMIC);
2289         if (!error_buff->buff) {
2290                 kfree(error_buff);
2291                 return;
2292         }
2293
2294         error_buff->dma = dma_map_single(dev, error_buff->buff, detail_len,
2295                                          DMA_FROM_DEVICE);
2296         if (dma_mapping_error(dev, error_buff->dma)) {
2297                 if (!firmware_has_feature(FW_FEATURE_CMO))
2298                         dev_err(dev, "Couldn't map error buffer\n");
2299                 kfree(error_buff->buff);
2300                 kfree(error_buff);
2301                 return;
2302         }
2303
2304         inflight_cmd = kmalloc(sizeof(*inflight_cmd), GFP_ATOMIC);
2305         if (!inflight_cmd) {
2306                 dma_unmap_single(dev, error_buff->dma, detail_len,
2307                                  DMA_FROM_DEVICE);
2308                 kfree(error_buff->buff);
2309                 kfree(error_buff);
2310                 return;
2311         }
2312
2313         error_buff->len = detail_len;
2314         error_buff->error_id = crq->error_indication.error_id;
2315
2316         spin_lock_irqsave(&adapter->error_list_lock, flags);
2317         list_add_tail(&error_buff->list, &adapter->errors);
2318         spin_unlock_irqrestore(&adapter->error_list_lock, flags);
2319
2320         memset(&new_crq, 0, sizeof(new_crq));
2321         new_crq.request_error_info.first = IBMVNIC_CRQ_CMD;
2322         new_crq.request_error_info.cmd = REQUEST_ERROR_INFO;
2323         new_crq.request_error_info.ioba = cpu_to_be32(error_buff->dma);
2324         new_crq.request_error_info.len = cpu_to_be32(detail_len);
2325         new_crq.request_error_info.error_id = crq->error_indication.error_id;
2326
2327         memcpy(&inflight_cmd->crq, &crq, sizeof(crq));
2328
2329         spin_lock_irqsave(&adapter->inflight_lock, flags);
2330         list_add_tail(&inflight_cmd->list, &adapter->inflight);
2331         spin_unlock_irqrestore(&adapter->inflight_lock, flags);
2332
2333         ibmvnic_send_crq(adapter, &new_crq);
2334 }
2335
2336 static void handle_change_mac_rsp(union ibmvnic_crq *crq,
2337                                   struct ibmvnic_adapter *adapter)
2338 {
2339         struct net_device *netdev = adapter->netdev;
2340         struct device *dev = &adapter->vdev->dev;
2341         long rc;
2342
2343         rc = crq->change_mac_addr_rsp.rc.code;
2344         if (rc) {
2345                 dev_err(dev, "Error %ld in CHANGE_MAC_ADDR_RSP\n", rc);
2346                 return;
2347         }
2348         memcpy(netdev->dev_addr, &crq->change_mac_addr_rsp.mac_addr[0],
2349                ETH_ALEN);
2350 }
2351
2352 static void handle_request_cap_rsp(union ibmvnic_crq *crq,
2353                                    struct ibmvnic_adapter *adapter)
2354 {
2355         struct device *dev = &adapter->vdev->dev;
2356         u64 *req_value;
2357         char *name;
2358
2359         switch (be16_to_cpu(crq->request_capability_rsp.capability)) {
2360         case REQ_TX_QUEUES:
2361                 req_value = &adapter->req_tx_queues;
2362                 name = "tx";
2363                 break;
2364         case REQ_RX_QUEUES:
2365                 req_value = &adapter->req_rx_queues;
2366                 name = "rx";
2367                 break;
2368         case REQ_RX_ADD_QUEUES:
2369                 req_value = &adapter->req_rx_add_queues;
2370                 name = "rx_add";
2371                 break;
2372         case REQ_TX_ENTRIES_PER_SUBCRQ:
2373                 req_value = &adapter->req_tx_entries_per_subcrq;
2374                 name = "tx_entries_per_subcrq";
2375                 break;
2376         case REQ_RX_ADD_ENTRIES_PER_SUBCRQ:
2377                 req_value = &adapter->req_rx_add_entries_per_subcrq;
2378                 name = "rx_add_entries_per_subcrq";
2379                 break;
2380         case REQ_MTU:
2381                 req_value = &adapter->req_mtu;
2382                 name = "mtu";
2383                 break;
2384         case PROMISC_REQUESTED:
2385                 req_value = &adapter->promisc;
2386                 name = "promisc";
2387                 break;
2388         default:
2389                 dev_err(dev, "Got invalid cap request rsp %d\n",
2390                         crq->request_capability.capability);
2391                 return;
2392         }
2393
2394         switch (crq->request_capability_rsp.rc.code) {
2395         case SUCCESS:
2396                 break;
2397         case PARTIALSUCCESS:
2398                 dev_info(dev, "req=%lld, rsp=%ld in %s queue, retrying.\n",
2399                          *req_value,
2400                          (long int)be32_to_cpu(crq->request_capability_rsp.
2401                                                number), name);
2402                 release_sub_crqs_no_irqs(adapter);
2403                 *req_value = be32_to_cpu(crq->request_capability_rsp.number);
2404                 init_sub_crqs(adapter, 1);
2405                 return;
2406         default:
2407                 dev_err(dev, "Error %d in request cap rsp\n",
2408                         crq->request_capability_rsp.rc.code);
2409                 return;
2410         }
2411
2412         /* Done receiving requested capabilities, query IP offload support */
2413         if (++adapter->requested_caps == 7) {
2414                 union ibmvnic_crq newcrq;
2415                 int buf_sz = sizeof(struct ibmvnic_query_ip_offload_buffer);
2416                 struct ibmvnic_query_ip_offload_buffer *ip_offload_buf =
2417                     &adapter->ip_offload_buf;
2418
2419                 adapter->ip_offload_tok = dma_map_single(dev, ip_offload_buf,
2420                                                          buf_sz,
2421                                                          DMA_FROM_DEVICE);
2422
2423                 if (dma_mapping_error(dev, adapter->ip_offload_tok)) {
2424                         if (!firmware_has_feature(FW_FEATURE_CMO))
2425                                 dev_err(dev, "Couldn't map offload buffer\n");
2426                         return;
2427                 }
2428
2429                 memset(&newcrq, 0, sizeof(newcrq));
2430                 newcrq.query_ip_offload.first = IBMVNIC_CRQ_CMD;
2431                 newcrq.query_ip_offload.cmd = QUERY_IP_OFFLOAD;
2432                 newcrq.query_ip_offload.len = cpu_to_be32(buf_sz);
2433                 newcrq.query_ip_offload.ioba =
2434                     cpu_to_be32(adapter->ip_offload_tok);
2435
2436                 ibmvnic_send_crq(adapter, &newcrq);
2437         }
2438 }
2439
2440 static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq,
2441                             struct ibmvnic_adapter *adapter)
2442 {
2443         struct device *dev = &adapter->vdev->dev;
2444         struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf;
2445         struct ibmvnic_login_buffer *login = adapter->login_buf;
2446         union ibmvnic_crq crq;
2447         int i;
2448
2449         dma_unmap_single(dev, adapter->login_buf_token, adapter->login_buf_sz,
2450                          DMA_BIDIRECTIONAL);
2451         dma_unmap_single(dev, adapter->login_rsp_buf_token,
2452                          adapter->login_rsp_buf_sz, DMA_BIDIRECTIONAL);
2453
2454         /* If the number of queues requested can't be allocated by the
2455          * server, the login response will return with code 1. We will need
2456          * to resend the login buffer with fewer queues requested.
2457          */
2458         if (login_rsp_crq->generic.rc.code) {
2459                 adapter->renegotiate = true;
2460                 complete(&adapter->init_done);
2461                 return 0;
2462         }
2463
2464         netdev_dbg(adapter->netdev, "Login Response Buffer:\n");
2465         for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) {
2466                 netdev_dbg(adapter->netdev, "%016lx\n",
2467                            ((unsigned long int *)(adapter->login_rsp_buf))[i]);
2468         }
2469
2470         /* Sanity checks */
2471         if (login->num_txcomp_subcrqs != login_rsp->num_txsubm_subcrqs ||
2472             (be32_to_cpu(login->num_rxcomp_subcrqs) *
2473              adapter->req_rx_add_queues !=
2474              be32_to_cpu(login_rsp->num_rxadd_subcrqs))) {
2475                 dev_err(dev, "FATAL: Inconsistent login and login rsp\n");
2476                 ibmvnic_remove(adapter->vdev);
2477                 return -EIO;
2478         }
2479         complete(&adapter->init_done);
2480
2481         memset(&crq, 0, sizeof(crq));
2482         crq.request_ras_comp_num.first = IBMVNIC_CRQ_CMD;
2483         crq.request_ras_comp_num.cmd = REQUEST_RAS_COMP_NUM;
2484         ibmvnic_send_crq(adapter, &crq);
2485
2486         return 0;
2487 }
2488
2489 static void handle_request_map_rsp(union ibmvnic_crq *crq,
2490                                    struct ibmvnic_adapter *adapter)
2491 {
2492         struct device *dev = &adapter->vdev->dev;
2493         u8 map_id = crq->request_map_rsp.map_id;
2494         int tx_subcrqs;
2495         int rx_subcrqs;
2496         long rc;
2497         int i;
2498
2499         tx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_txsubm_subcrqs);
2500         rx_subcrqs = be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
2501
2502         rc = crq->request_map_rsp.rc.code;
2503         if (rc) {
2504                 dev_err(dev, "Error %ld in REQUEST_MAP_RSP\n", rc);
2505                 adapter->map_id--;
2506                 /* need to find and zero tx/rx_pool map_id */
2507                 for (i = 0; i < tx_subcrqs; i++) {
2508                         if (adapter->tx_pool[i].long_term_buff.map_id == map_id)
2509                                 adapter->tx_pool[i].long_term_buff.map_id = 0;
2510                 }
2511                 for (i = 0; i < rx_subcrqs; i++) {
2512                         if (adapter->rx_pool[i].long_term_buff.map_id == map_id)
2513                                 adapter->rx_pool[i].long_term_buff.map_id = 0;
2514                 }
2515         }
2516         complete(&adapter->fw_done);
2517 }
2518
2519 static void handle_request_unmap_rsp(union ibmvnic_crq *crq,
2520                                      struct ibmvnic_adapter *adapter)
2521 {
2522         struct device *dev = &adapter->vdev->dev;
2523         long rc;
2524
2525         rc = crq->request_unmap_rsp.rc.code;
2526         if (rc)
2527                 dev_err(dev, "Error %ld in REQUEST_UNMAP_RSP\n", rc);
2528 }
2529
2530 static void handle_query_map_rsp(union ibmvnic_crq *crq,
2531                                  struct ibmvnic_adapter *adapter)
2532 {
2533         struct net_device *netdev = adapter->netdev;
2534         struct device *dev = &adapter->vdev->dev;
2535         long rc;
2536
2537         rc = crq->query_map_rsp.rc.code;
2538         if (rc) {
2539                 dev_err(dev, "Error %ld in QUERY_MAP_RSP\n", rc);
2540                 return;
2541         }
2542         netdev_dbg(netdev, "page_size = %d\ntot_pages = %d\nfree_pages = %d\n",
2543                    crq->query_map_rsp.page_size, crq->query_map_rsp.tot_pages,
2544                    crq->query_map_rsp.free_pages);
2545 }
2546
2547 static void handle_query_cap_rsp(union ibmvnic_crq *crq,
2548                                  struct ibmvnic_adapter *adapter)
2549 {
2550         struct net_device *netdev = adapter->netdev;
2551         struct device *dev = &adapter->vdev->dev;
2552         long rc;
2553
2554         atomic_dec(&adapter->running_cap_queries);
2555         netdev_dbg(netdev, "Outstanding queries: %d\n",
2556                    atomic_read(&adapter->running_cap_queries));
2557         rc = crq->query_capability.rc.code;
2558         if (rc) {
2559                 dev_err(dev, "Error %ld in QUERY_CAP_RSP\n", rc);
2560                 goto out;
2561         }
2562
2563         switch (be16_to_cpu(crq->query_capability.capability)) {
2564         case MIN_TX_QUEUES:
2565                 adapter->min_tx_queues =
2566                     be64_to_cpu(crq->query_capability.number);
2567                 netdev_dbg(netdev, "min_tx_queues = %lld\n",
2568                            adapter->min_tx_queues);
2569                 break;
2570         case MIN_RX_QUEUES:
2571                 adapter->min_rx_queues =
2572                     be64_to_cpu(crq->query_capability.number);
2573                 netdev_dbg(netdev, "min_rx_queues = %lld\n",
2574                            adapter->min_rx_queues);
2575                 break;
2576         case MIN_RX_ADD_QUEUES:
2577                 adapter->min_rx_add_queues =
2578                     be64_to_cpu(crq->query_capability.number);
2579                 netdev_dbg(netdev, "min_rx_add_queues = %lld\n",
2580                            adapter->min_rx_add_queues);
2581                 break;
2582         case MAX_TX_QUEUES:
2583                 adapter->max_tx_queues =
2584                     be64_to_cpu(crq->query_capability.number);
2585                 netdev_dbg(netdev, "max_tx_queues = %lld\n",
2586                            adapter->max_tx_queues);
2587                 break;
2588         case MAX_RX_QUEUES:
2589                 adapter->max_rx_queues =
2590                     be64_to_cpu(crq->query_capability.number);
2591                 netdev_dbg(netdev, "max_rx_queues = %lld\n",
2592                            adapter->max_rx_queues);
2593                 break;
2594         case MAX_RX_ADD_QUEUES:
2595                 adapter->max_rx_add_queues =
2596                     be64_to_cpu(crq->query_capability.number);
2597                 netdev_dbg(netdev, "max_rx_add_queues = %lld\n",
2598                            adapter->max_rx_add_queues);
2599                 break;
2600         case MIN_TX_ENTRIES_PER_SUBCRQ:
2601                 adapter->min_tx_entries_per_subcrq =
2602                     be64_to_cpu(crq->query_capability.number);
2603                 netdev_dbg(netdev, "min_tx_entries_per_subcrq = %lld\n",
2604                            adapter->min_tx_entries_per_subcrq);
2605                 break;
2606         case MIN_RX_ADD_ENTRIES_PER_SUBCRQ:
2607                 adapter->min_rx_add_entries_per_subcrq =
2608                     be64_to_cpu(crq->query_capability.number);
2609                 netdev_dbg(netdev, "min_rx_add_entrs_per_subcrq = %lld\n",
2610                            adapter->min_rx_add_entries_per_subcrq);
2611                 break;
2612         case MAX_TX_ENTRIES_PER_SUBCRQ:
2613                 adapter->max_tx_entries_per_subcrq =
2614                     be64_to_cpu(crq->query_capability.number);
2615                 netdev_dbg(netdev, "max_tx_entries_per_subcrq = %lld\n",
2616                            adapter->max_tx_entries_per_subcrq);
2617                 break;
2618         case MAX_RX_ADD_ENTRIES_PER_SUBCRQ:
2619                 adapter->max_rx_add_entries_per_subcrq =
2620                     be64_to_cpu(crq->query_capability.number);
2621                 netdev_dbg(netdev, "max_rx_add_entrs_per_subcrq = %lld\n",
2622                            adapter->max_rx_add_entries_per_subcrq);
2623                 break;
2624         case TCP_IP_OFFLOAD:
2625                 adapter->tcp_ip_offload =
2626                     be64_to_cpu(crq->query_capability.number);
2627                 netdev_dbg(netdev, "tcp_ip_offload = %lld\n",
2628                            adapter->tcp_ip_offload);
2629                 break;
2630         case PROMISC_SUPPORTED:
2631                 adapter->promisc_supported =
2632                     be64_to_cpu(crq->query_capability.number);
2633                 netdev_dbg(netdev, "promisc_supported = %lld\n",
2634                            adapter->promisc_supported);
2635                 break;
2636         case MIN_MTU:
2637                 adapter->min_mtu = be64_to_cpu(crq->query_capability.number);
2638                 netdev_dbg(netdev, "min_mtu = %lld\n", adapter->min_mtu);
2639                 break;
2640         case MAX_MTU:
2641                 adapter->max_mtu = be64_to_cpu(crq->query_capability.number);
2642                 netdev_dbg(netdev, "max_mtu = %lld\n", adapter->max_mtu);
2643                 break;
2644         case MAX_MULTICAST_FILTERS:
2645                 adapter->max_multicast_filters =
2646                     be64_to_cpu(crq->query_capability.number);
2647                 netdev_dbg(netdev, "max_multicast_filters = %lld\n",
2648                            adapter->max_multicast_filters);
2649                 break;
2650         case VLAN_HEADER_INSERTION:
2651                 adapter->vlan_header_insertion =
2652                     be64_to_cpu(crq->query_capability.number);
2653                 if (adapter->vlan_header_insertion)
2654                         netdev->features |= NETIF_F_HW_VLAN_STAG_TX;
2655                 netdev_dbg(netdev, "vlan_header_insertion = %lld\n",
2656                            adapter->vlan_header_insertion);
2657                 break;
2658         case MAX_TX_SG_ENTRIES:
2659                 adapter->max_tx_sg_entries =
2660                     be64_to_cpu(crq->query_capability.number);
2661                 netdev_dbg(netdev, "max_tx_sg_entries = %lld\n",
2662                            adapter->max_tx_sg_entries);
2663                 break;
2664         case RX_SG_SUPPORTED:
2665                 adapter->rx_sg_supported =
2666                     be64_to_cpu(crq->query_capability.number);
2667                 netdev_dbg(netdev, "rx_sg_supported = %lld\n",
2668                            adapter->rx_sg_supported);
2669                 break;
2670         case OPT_TX_COMP_SUB_QUEUES:
2671                 adapter->opt_tx_comp_sub_queues =
2672                     be64_to_cpu(crq->query_capability.number);
2673                 netdev_dbg(netdev, "opt_tx_comp_sub_queues = %lld\n",
2674                            adapter->opt_tx_comp_sub_queues);
2675                 break;
2676         case OPT_RX_COMP_QUEUES:
2677                 adapter->opt_rx_comp_queues =
2678                     be64_to_cpu(crq->query_capability.number);
2679                 netdev_dbg(netdev, "opt_rx_comp_queues = %lld\n",
2680                            adapter->opt_rx_comp_queues);
2681                 break;
2682         case OPT_RX_BUFADD_Q_PER_RX_COMP_Q:
2683                 adapter->opt_rx_bufadd_q_per_rx_comp_q =
2684                     be64_to_cpu(crq->query_capability.number);
2685                 netdev_dbg(netdev, "opt_rx_bufadd_q_per_rx_comp_q = %lld\n",
2686                            adapter->opt_rx_bufadd_q_per_rx_comp_q);
2687                 break;
2688         case OPT_TX_ENTRIES_PER_SUBCRQ:
2689                 adapter->opt_tx_entries_per_subcrq =
2690                     be64_to_cpu(crq->query_capability.number);
2691                 netdev_dbg(netdev, "opt_tx_entries_per_subcrq = %lld\n",
2692                            adapter->opt_tx_entries_per_subcrq);
2693                 break;
2694         case OPT_RXBA_ENTRIES_PER_SUBCRQ:
2695                 adapter->opt_rxba_entries_per_subcrq =
2696                     be64_to_cpu(crq->query_capability.number);
2697                 netdev_dbg(netdev, "opt_rxba_entries_per_subcrq = %lld\n",
2698                            adapter->opt_rxba_entries_per_subcrq);
2699                 break;
2700         case TX_RX_DESC_REQ:
2701                 adapter->tx_rx_desc_req = crq->query_capability.number;
2702                 netdev_dbg(netdev, "tx_rx_desc_req = %llx\n",
2703                            adapter->tx_rx_desc_req);
2704                 break;
2705
2706         default:
2707                 netdev_err(netdev, "Got invalid cap rsp %d\n",
2708                            crq->query_capability.capability);
2709         }
2710
2711 out:
2712         if (atomic_read(&adapter->running_cap_queries) == 0)
2713                 init_sub_crqs(adapter, 0);
2714                 /* We're done querying the capabilities, initialize sub-crqs */
2715 }
2716
2717 static void handle_control_ras_rsp(union ibmvnic_crq *crq,
2718                                    struct ibmvnic_adapter *adapter)
2719 {
2720         u8 correlator = crq->control_ras_rsp.correlator;
2721         struct device *dev = &adapter->vdev->dev;
2722         bool found = false;
2723         int i;
2724
2725         if (crq->control_ras_rsp.rc.code) {
2726                 dev_warn(dev, "Control ras failed rc=%d\n",
2727                          crq->control_ras_rsp.rc.code);
2728                 return;
2729         }
2730
2731         for (i = 0; i < adapter->ras_comp_num; i++) {
2732                 if (adapter->ras_comps[i].correlator == correlator) {
2733                         found = true;
2734                         break;
2735                 }
2736         }
2737
2738         if (!found) {
2739                 dev_warn(dev, "Correlator not found on control_ras_rsp\n");
2740                 return;
2741         }
2742
2743         switch (crq->control_ras_rsp.op) {
2744         case IBMVNIC_TRACE_LEVEL:
2745                 adapter->ras_comps[i].trace_level = crq->control_ras.level;
2746                 break;
2747         case IBMVNIC_ERROR_LEVEL:
2748                 adapter->ras_comps[i].error_check_level =
2749                     crq->control_ras.level;
2750                 break;
2751         case IBMVNIC_TRACE_PAUSE:
2752                 adapter->ras_comp_int[i].paused = 1;
2753                 break;
2754         case IBMVNIC_TRACE_RESUME:
2755                 adapter->ras_comp_int[i].paused = 0;
2756                 break;
2757         case IBMVNIC_TRACE_ON:
2758                 adapter->ras_comps[i].trace_on = 1;
2759                 break;
2760         case IBMVNIC_TRACE_OFF:
2761                 adapter->ras_comps[i].trace_on = 0;
2762                 break;
2763         case IBMVNIC_CHG_TRACE_BUFF_SZ:
2764                 /* trace_buff_sz is 3 bytes, stuff it into an int */
2765                 ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[0] = 0;
2766                 ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[1] =
2767                     crq->control_ras_rsp.trace_buff_sz[0];
2768                 ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[2] =
2769                     crq->control_ras_rsp.trace_buff_sz[1];
2770                 ((u8 *)(&adapter->ras_comps[i].trace_buff_size))[3] =
2771                     crq->control_ras_rsp.trace_buff_sz[2];
2772                 break;
2773         default:
2774                 dev_err(dev, "invalid op %d on control_ras_rsp",
2775                         crq->control_ras_rsp.op);
2776         }
2777 }
2778
2779 static int ibmvnic_fw_comp_open(struct inode *inode, struct file *file)
2780 {
2781         file->private_data = inode->i_private;
2782         return 0;
2783 }
2784
2785 static ssize_t trace_read(struct file *file, char __user *user_buf, size_t len,
2786                           loff_t *ppos)
2787 {
2788         struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2789         struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2790         struct device *dev = &adapter->vdev->dev;
2791         struct ibmvnic_fw_trace_entry *trace;
2792         int num = ras_comp_int->num;
2793         union ibmvnic_crq crq;
2794         dma_addr_t trace_tok;
2795
2796         if (*ppos >= be32_to_cpu(adapter->ras_comps[num].trace_buff_size))
2797                 return 0;
2798
2799         trace =
2800             dma_alloc_coherent(dev,
2801                                be32_to_cpu(adapter->ras_comps[num].
2802                                            trace_buff_size), &trace_tok,
2803                                GFP_KERNEL);
2804         if (!trace) {
2805                 dev_err(dev, "Couldn't alloc trace buffer\n");
2806                 return 0;
2807         }
2808
2809         memset(&crq, 0, sizeof(crq));
2810         crq.collect_fw_trace.first = IBMVNIC_CRQ_CMD;
2811         crq.collect_fw_trace.cmd = COLLECT_FW_TRACE;
2812         crq.collect_fw_trace.correlator = adapter->ras_comps[num].correlator;
2813         crq.collect_fw_trace.ioba = cpu_to_be32(trace_tok);
2814         crq.collect_fw_trace.len = adapter->ras_comps[num].trace_buff_size;
2815         ibmvnic_send_crq(adapter, &crq);
2816
2817         init_completion(&adapter->fw_done);
2818         wait_for_completion(&adapter->fw_done);
2819
2820         if (*ppos + len > be32_to_cpu(adapter->ras_comps[num].trace_buff_size))
2821                 len =
2822                     be32_to_cpu(adapter->ras_comps[num].trace_buff_size) -
2823                     *ppos;
2824
2825         copy_to_user(user_buf, &((u8 *)trace)[*ppos], len);
2826
2827         dma_free_coherent(dev,
2828                           be32_to_cpu(adapter->ras_comps[num].trace_buff_size),
2829                           trace, trace_tok);
2830         *ppos += len;
2831         return len;
2832 }
2833
2834 static const struct file_operations trace_ops = {
2835         .owner          = THIS_MODULE,
2836         .open           = ibmvnic_fw_comp_open,
2837         .read           = trace_read,
2838 };
2839
2840 static ssize_t paused_read(struct file *file, char __user *user_buf, size_t len,
2841                            loff_t *ppos)
2842 {
2843         struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2844         struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2845         int num = ras_comp_int->num;
2846         char buff[5]; /*  1 or 0 plus \n and \0 */
2847         int size;
2848
2849         size = sprintf(buff, "%d\n", adapter->ras_comp_int[num].paused);
2850
2851         if (*ppos >= size)
2852                 return 0;
2853
2854         copy_to_user(user_buf, buff, size);
2855         *ppos += size;
2856         return size;
2857 }
2858
2859 static ssize_t paused_write(struct file *file, const char __user *user_buf,
2860                             size_t len, loff_t *ppos)
2861 {
2862         struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2863         struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2864         int num = ras_comp_int->num;
2865         union ibmvnic_crq crq;
2866         unsigned long val;
2867         char buff[9]; /* decimal max int plus \n and \0 */
2868
2869         copy_from_user(buff, user_buf, sizeof(buff));
2870         val = kstrtoul(buff, 10, NULL);
2871
2872         adapter->ras_comp_int[num].paused = val ? 1 : 0;
2873
2874         memset(&crq, 0, sizeof(crq));
2875         crq.control_ras.first = IBMVNIC_CRQ_CMD;
2876         crq.control_ras.cmd = CONTROL_RAS;
2877         crq.control_ras.correlator = adapter->ras_comps[num].correlator;
2878         crq.control_ras.op = val ? IBMVNIC_TRACE_PAUSE : IBMVNIC_TRACE_RESUME;
2879         ibmvnic_send_crq(adapter, &crq);
2880
2881         return len;
2882 }
2883
2884 static const struct file_operations paused_ops = {
2885         .owner          = THIS_MODULE,
2886         .open           = ibmvnic_fw_comp_open,
2887         .read           = paused_read,
2888         .write          = paused_write,
2889 };
2890
2891 static ssize_t tracing_read(struct file *file, char __user *user_buf,
2892                             size_t len, loff_t *ppos)
2893 {
2894         struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2895         struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2896         int num = ras_comp_int->num;
2897         char buff[5]; /*  1 or 0 plus \n and \0 */
2898         int size;
2899
2900         size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_on);
2901
2902         if (*ppos >= size)
2903                 return 0;
2904
2905         copy_to_user(user_buf, buff, size);
2906         *ppos += size;
2907         return size;
2908 }
2909
2910 static ssize_t tracing_write(struct file *file, const char __user *user_buf,
2911                              size_t len, loff_t *ppos)
2912 {
2913         struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2914         struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2915         int num = ras_comp_int->num;
2916         union ibmvnic_crq crq;
2917         unsigned long val;
2918         char buff[9]; /* decimal max int plus \n and \0 */
2919
2920         copy_from_user(buff, user_buf, sizeof(buff));
2921         val = kstrtoul(buff, 10, NULL);
2922
2923         memset(&crq, 0, sizeof(crq));
2924         crq.control_ras.first = IBMVNIC_CRQ_CMD;
2925         crq.control_ras.cmd = CONTROL_RAS;
2926         crq.control_ras.correlator = adapter->ras_comps[num].correlator;
2927         crq.control_ras.op = val ? IBMVNIC_TRACE_ON : IBMVNIC_TRACE_OFF;
2928
2929         return len;
2930 }
2931
2932 static const struct file_operations tracing_ops = {
2933         .owner          = THIS_MODULE,
2934         .open           = ibmvnic_fw_comp_open,
2935         .read           = tracing_read,
2936         .write          = tracing_write,
2937 };
2938
2939 static ssize_t error_level_read(struct file *file, char __user *user_buf,
2940                                 size_t len, loff_t *ppos)
2941 {
2942         struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2943         struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2944         int num = ras_comp_int->num;
2945         char buff[5]; /* decimal max char plus \n and \0 */
2946         int size;
2947
2948         size = sprintf(buff, "%d\n", adapter->ras_comps[num].error_check_level);
2949
2950         if (*ppos >= size)
2951                 return 0;
2952
2953         copy_to_user(user_buf, buff, size);
2954         *ppos += size;
2955         return size;
2956 }
2957
2958 static ssize_t error_level_write(struct file *file, const char __user *user_buf,
2959                                  size_t len, loff_t *ppos)
2960 {
2961         struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2962         struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2963         int num = ras_comp_int->num;
2964         union ibmvnic_crq crq;
2965         unsigned long val;
2966         char buff[9]; /* decimal max int plus \n and \0 */
2967
2968         copy_from_user(buff, user_buf, sizeof(buff));
2969         val = kstrtoul(buff, 10, NULL);
2970
2971         if (val > 9)
2972                 val = 9;
2973
2974         memset(&crq, 0, sizeof(crq));
2975         crq.control_ras.first = IBMVNIC_CRQ_CMD;
2976         crq.control_ras.cmd = CONTROL_RAS;
2977         crq.control_ras.correlator = adapter->ras_comps[num].correlator;
2978         crq.control_ras.op = IBMVNIC_ERROR_LEVEL;
2979         crq.control_ras.level = val;
2980         ibmvnic_send_crq(adapter, &crq);
2981
2982         return len;
2983 }
2984
2985 static const struct file_operations error_level_ops = {
2986         .owner          = THIS_MODULE,
2987         .open           = ibmvnic_fw_comp_open,
2988         .read           = error_level_read,
2989         .write          = error_level_write,
2990 };
2991
2992 static ssize_t trace_level_read(struct file *file, char __user *user_buf,
2993                                 size_t len, loff_t *ppos)
2994 {
2995         struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
2996         struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
2997         int num = ras_comp_int->num;
2998         char buff[5]; /* decimal max char plus \n and \0 */
2999         int size;
3000
3001         size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_level);
3002         if (*ppos >= size)
3003                 return 0;
3004
3005         copy_to_user(user_buf, buff, size);
3006         *ppos += size;
3007         return size;
3008 }
3009
3010 static ssize_t trace_level_write(struct file *file, const char __user *user_buf,
3011                                  size_t len, loff_t *ppos)
3012 {
3013         struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
3014         struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
3015         union ibmvnic_crq crq;
3016         unsigned long val;
3017         char buff[9]; /* decimal max int plus \n and \0 */
3018
3019         copy_from_user(buff, user_buf, sizeof(buff));
3020         val = kstrtoul(buff, 10, NULL);
3021         if (val > 9)
3022                 val = 9;
3023
3024         memset(&crq, 0, sizeof(crq));
3025         crq.control_ras.first = IBMVNIC_CRQ_CMD;
3026         crq.control_ras.cmd = CONTROL_RAS;
3027         crq.control_ras.correlator =
3028             adapter->ras_comps[ras_comp_int->num].correlator;
3029         crq.control_ras.op = IBMVNIC_TRACE_LEVEL;
3030         crq.control_ras.level = val;
3031         ibmvnic_send_crq(adapter, &crq);
3032
3033         return len;
3034 }
3035
3036 static const struct file_operations trace_level_ops = {
3037         .owner          = THIS_MODULE,
3038         .open           = ibmvnic_fw_comp_open,
3039         .read           = trace_level_read,
3040         .write          = trace_level_write,
3041 };
3042
3043 static ssize_t trace_buff_size_read(struct file *file, char __user *user_buf,
3044                                     size_t len, loff_t *ppos)
3045 {
3046         struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
3047         struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
3048         int num = ras_comp_int->num;
3049         char buff[9]; /* decimal max int plus \n and \0 */
3050         int size;
3051
3052         size = sprintf(buff, "%d\n", adapter->ras_comps[num].trace_buff_size);
3053         if (*ppos >= size)
3054                 return 0;
3055
3056         copy_to_user(user_buf, buff, size);
3057         *ppos += size;
3058         return size;
3059 }
3060
3061 static ssize_t trace_buff_size_write(struct file *file,
3062                                      const char __user *user_buf, size_t len,
3063                                      loff_t *ppos)
3064 {
3065         struct ibmvnic_fw_comp_internal *ras_comp_int = file->private_data;
3066         struct ibmvnic_adapter *adapter = ras_comp_int->adapter;
3067         union ibmvnic_crq crq;
3068         unsigned long val;
3069         char buff[9]; /* decimal max int plus \n and \0 */
3070
3071         copy_from_user(buff, user_buf, sizeof(buff));
3072         val = kstrtoul(buff, 10, NULL);
3073
3074         memset(&crq, 0, sizeof(crq));
3075         crq.control_ras.first = IBMVNIC_CRQ_CMD;
3076         crq.control_ras.cmd = CONTROL_RAS;
3077         crq.control_ras.correlator =
3078             adapter->ras_comps[ras_comp_int->num].correlator;
3079         crq.control_ras.op = IBMVNIC_CHG_TRACE_BUFF_SZ;
3080         /* trace_buff_sz is 3 bytes, stuff an int into it */
3081         crq.control_ras.trace_buff_sz[0] = ((u8 *)(&val))[5];
3082         crq.control_ras.trace_buff_sz[1] = ((u8 *)(&val))[6];
3083         crq.control_ras.trace_buff_sz[2] = ((u8 *)(&val))[7];
3084         ibmvnic_send_crq(adapter, &crq);
3085
3086         return len;
3087 }
3088
3089 static const struct file_operations trace_size_ops = {
3090         .owner          = THIS_MODULE,
3091         .open           = ibmvnic_fw_comp_open,
3092         .read           = trace_buff_size_read,
3093         .write          = trace_buff_size_write,
3094 };
3095
3096 static void handle_request_ras_comps_rsp(union ibmvnic_crq *crq,
3097                                          struct ibmvnic_adapter *adapter)
3098 {
3099         struct device *dev = &adapter->vdev->dev;
3100         struct dentry *dir_ent;
3101         struct dentry *ent;
3102         int i;
3103
3104         debugfs_remove_recursive(adapter->ras_comps_ent);
3105
3106         adapter->ras_comps_ent = debugfs_create_dir("ras_comps",
3107                                                     adapter->debugfs_dir);
3108         if (!adapter->ras_comps_ent || IS_ERR(adapter->ras_comps_ent)) {
3109                 dev_info(dev, "debugfs create ras_comps dir failed\n");
3110                 return;
3111         }
3112
3113         for (i = 0; i < adapter->ras_comp_num; i++) {
3114                 dir_ent = debugfs_create_dir(adapter->ras_comps[i].name,
3115                                              adapter->ras_comps_ent);
3116                 if (!dir_ent || IS_ERR(dir_ent)) {
3117                         dev_info(dev, "debugfs create %s dir failed\n",
3118                                  adapter->ras_comps[i].name);
3119                         continue;
3120                 }
3121
3122                 adapter->ras_comp_int[i].adapter = adapter;
3123                 adapter->ras_comp_int[i].num = i;
3124                 adapter->ras_comp_int[i].desc_blob.data =
3125                     &adapter->ras_comps[i].description;
3126                 adapter->ras_comp_int[i].desc_blob.size =
3127                     sizeof(adapter->ras_comps[i].description);
3128
3129                 /* Don't need to remember the dentry's because the debugfs dir
3130                  * gets removed recursively
3131                  */
3132                 ent = debugfs_create_blob("description", S_IRUGO, dir_ent,
3133                                           &adapter->ras_comp_int[i].desc_blob);
3134                 ent = debugfs_create_file("trace_buf_size", S_IRUGO | S_IWUSR,
3135                                           dir_ent, &adapter->ras_comp_int[i],
3136                                           &trace_size_ops);
3137                 ent = debugfs_create_file("trace_level",
3138                                           S_IRUGO |
3139                                           (adapter->ras_comps[i].trace_level !=
3140                                            0xFF  ? S_IWUSR : 0),
3141                                            dir_ent, &adapter->ras_comp_int[i],
3142                                            &trace_level_ops);
3143                 ent = debugfs_create_file("error_level",
3144                                           S_IRUGO |
3145                                           (adapter->
3146                                            ras_comps[i].error_check_level !=
3147                                            0xFF ? S_IWUSR : 0),
3148                                           dir_ent, &adapter->ras_comp_int[i],
3149                                           &trace_level_ops);
3150                 ent = debugfs_create_file("tracing", S_IRUGO | S_IWUSR,
3151                                           dir_ent, &adapter->ras_comp_int[i],
3152                                           &tracing_ops);
3153                 ent = debugfs_create_file("paused", S_IRUGO | S_IWUSR,
3154                                           dir_ent, &adapter->ras_comp_int[i],
3155                                           &paused_ops);
3156                 ent = debugfs_create_file("trace", S_IRUGO, dir_ent,
3157                                           &adapter->ras_comp_int[i],
3158                                           &trace_ops);
3159         }
3160 }
3161
3162 static void handle_request_ras_comp_num_rsp(union ibmvnic_crq *crq,
3163                                             struct ibmvnic_adapter *adapter)
3164 {
3165         int len = adapter->ras_comp_num * sizeof(struct ibmvnic_fw_component);
3166         struct device *dev = &adapter->vdev->dev;
3167         union ibmvnic_crq newcrq;
3168
3169         adapter->ras_comps = dma_alloc_coherent(dev, len,
3170                                                 &adapter->ras_comps_tok,
3171                                                 GFP_KERNEL);
3172         if (!adapter->ras_comps) {
3173                 if (!firmware_has_feature(FW_FEATURE_CMO))
3174                         dev_err(dev, "Couldn't alloc fw comps buffer\n");
3175                 return;
3176         }
3177
3178         adapter->ras_comp_int = kmalloc(adapter->ras_comp_num *
3179                                         sizeof(struct ibmvnic_fw_comp_internal),
3180                                         GFP_KERNEL);
3181         if (!adapter->ras_comp_int)
3182                 dma_free_coherent(dev, len, adapter->ras_comps,
3183                                   adapter->ras_comps_tok);
3184
3185         memset(&newcrq, 0, sizeof(newcrq));
3186         newcrq.request_ras_comps.first = IBMVNIC_CRQ_CMD;
3187         newcrq.request_ras_comps.cmd = REQUEST_RAS_COMPS;
3188         newcrq.request_ras_comps.ioba = cpu_to_be32(adapter->ras_comps_tok);
3189         newcrq.request_ras_comps.len = cpu_to_be32(len);
3190         ibmvnic_send_crq(adapter, &newcrq);
3191 }
3192
3193 static void ibmvnic_free_inflight(struct ibmvnic_adapter *adapter)
3194 {
3195         struct ibmvnic_inflight_cmd *inflight_cmd, *tmp1;
3196         struct device *dev = &adapter->vdev->dev;
3197         struct ibmvnic_error_buff *error_buff, *tmp2;
3198         unsigned long flags;
3199         unsigned long flags2;
3200
3201         spin_lock_irqsave(&adapter->inflight_lock, flags);
3202         list_for_each_entry_safe(inflight_cmd, tmp1, &adapter->inflight, list) {
3203                 switch (inflight_cmd->crq.generic.cmd) {
3204                 case LOGIN:
3205                         dma_unmap_single(dev, adapter->login_buf_token,
3206                                          adapter->login_buf_sz,
3207                                          DMA_BIDIRECTIONAL);
3208                         dma_unmap_single(dev, adapter->login_rsp_buf_token,
3209                                          adapter->login_rsp_buf_sz,
3210                                          DMA_BIDIRECTIONAL);
3211                         kfree(adapter->login_rsp_buf);
3212                         kfree(adapter->login_buf);
3213                         break;
3214                 case REQUEST_DUMP:
3215                         complete(&adapter->fw_done);
3216                         break;
3217                 case REQUEST_ERROR_INFO:
3218                         spin_lock_irqsave(&adapter->error_list_lock, flags2);
3219                         list_for_each_entry_safe(error_buff, tmp2,
3220                                                  &adapter->errors, list) {
3221                                 dma_unmap_single(dev, error_buff->dma,
3222                                                  error_buff->len,
3223                                                  DMA_FROM_DEVICE);
3224                                 kfree(error_buff->buff);
3225                                 list_del(&error_buff->list);
3226                                 kfree(error_buff);
3227                         }
3228                         spin_unlock_irqrestore(&adapter->error_list_lock,
3229                                                flags2);
3230                         break;
3231                 }
3232                 list_del(&inflight_cmd->list);
3233                 kfree(inflight_cmd);
3234         }
3235         spin_unlock_irqrestore(&adapter->inflight_lock, flags);
3236 }
3237
3238 static void ibmvnic_handle_crq(union ibmvnic_crq *crq,
3239                                struct ibmvnic_adapter *adapter)
3240 {
3241         struct ibmvnic_generic_crq *gen_crq = &crq->generic;
3242         struct net_device *netdev = adapter->netdev;
3243         struct device *dev = &adapter->vdev->dev;
3244         long rc;
3245
3246         netdev_dbg(netdev, "Handling CRQ: %016lx %016lx\n",
3247                    ((unsigned long int *)crq)[0],
3248                    ((unsigned long int *)crq)[1]);
3249         switch (gen_crq->first) {
3250         case IBMVNIC_CRQ_INIT_RSP:
3251                 switch (gen_crq->cmd) {
3252                 case IBMVNIC_CRQ_INIT:
3253                         dev_info(dev, "Partner initialized\n");
3254                         /* Send back a response */
3255                         rc = ibmvnic_send_crq_init_complete(adapter);
3256                         if (rc == 0)
3257                                 send_version_xchg(adapter);
3258                         else
3259                                 dev_err(dev, "Can't send initrsp rc=%ld\n", rc);
3260                         break;
3261                 case IBMVNIC_CRQ_INIT_COMPLETE:
3262                         dev_info(dev, "Partner initialization complete\n");
3263                         send_version_xchg(adapter);
3264                         break;
3265                 default:
3266                         dev_err(dev, "Unknown crq cmd: %d\n", gen_crq->cmd);
3267                 }
3268                 return;
3269         case IBMVNIC_CRQ_XPORT_EVENT:
3270                 if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) {
3271                         dev_info(dev, "Re-enabling adapter\n");
3272                         adapter->migrated = true;
3273                         ibmvnic_free_inflight(adapter);
3274                         release_sub_crqs(adapter);
3275                         rc = ibmvnic_reenable_crq_queue(adapter);
3276                         if (rc)
3277                                 dev_err(dev, "Error after enable rc=%ld\n", rc);
3278                         adapter->migrated = false;
3279                         rc = ibmvnic_send_crq_init(adapter);
3280                         if (rc)
3281                                 dev_err(dev, "Error sending init rc=%ld\n", rc);
3282                 } else {
3283                         /* The adapter lost the connection */
3284                         dev_err(dev, "Virtual Adapter failed (rc=%d)\n",
3285                                 gen_crq->cmd);
3286                         ibmvnic_free_inflight(adapter);
3287                         release_sub_crqs(adapter);
3288                 }
3289                 return;
3290         case IBMVNIC_CRQ_CMD_RSP:
3291                 break;
3292         default:
3293                 dev_err(dev, "Got an invalid msg type 0x%02x\n",
3294                         gen_crq->first);
3295                 return;
3296         }
3297
3298         switch (gen_crq->cmd) {
3299         case VERSION_EXCHANGE_RSP:
3300                 rc = crq->version_exchange_rsp.rc.code;
3301                 if (rc) {
3302                         dev_err(dev, "Error %ld in VERSION_EXCHG_RSP\n", rc);
3303                         break;
3304                 }
3305                 dev_info(dev, "Partner protocol version is %d\n",
3306                          crq->version_exchange_rsp.version);
3307                 if (be16_to_cpu(crq->version_exchange_rsp.version) <
3308                     ibmvnic_version)
3309                         ibmvnic_version =
3310                             be16_to_cpu(crq->version_exchange_rsp.version);
3311                 send_cap_queries(adapter);
3312                 break;
3313         case QUERY_CAPABILITY_RSP:
3314                 handle_query_cap_rsp(crq, adapter);
3315                 break;
3316         case QUERY_MAP_RSP:
3317                 handle_query_map_rsp(crq, adapter);
3318                 break;
3319         case REQUEST_MAP_RSP:
3320                 handle_request_map_rsp(crq, adapter);
3321                 break;
3322         case REQUEST_UNMAP_RSP:
3323                 handle_request_unmap_rsp(crq, adapter);
3324                 break;
3325         case REQUEST_CAPABILITY_RSP:
3326                 handle_request_cap_rsp(crq, adapter);
3327                 break;
3328         case LOGIN_RSP:
3329                 netdev_dbg(netdev, "Got Login Response\n");
3330                 handle_login_rsp(crq, adapter);
3331                 break;
3332         case LOGICAL_LINK_STATE_RSP:
3333                 netdev_dbg(netdev, "Got Logical Link State Response\n");
3334                 adapter->logical_link_state =
3335                     crq->logical_link_state_rsp.link_state;
3336                 break;
3337         case LINK_STATE_INDICATION:
3338                 netdev_dbg(netdev, "Got Logical Link State Indication\n");
3339                 adapter->phys_link_state =
3340                     crq->link_state_indication.phys_link_state;
3341                 adapter->logical_link_state =
3342                     crq->link_state_indication.logical_link_state;
3343                 break;
3344         case CHANGE_MAC_ADDR_RSP:
3345                 netdev_dbg(netdev, "Got MAC address change Response\n");
3346                 handle_change_mac_rsp(crq, adapter);
3347                 break;
3348         case ERROR_INDICATION:
3349                 netdev_dbg(netdev, "Got Error Indication\n");
3350                 handle_error_indication(crq, adapter);
3351                 break;
3352         case REQUEST_ERROR_RSP:
3353                 netdev_dbg(netdev, "Got Error Detail Response\n");
3354                 handle_error_info_rsp(crq, adapter);
3355                 break;
3356         case REQUEST_STATISTICS_RSP:
3357                 netdev_dbg(netdev, "Got Statistics Response\n");
3358                 complete(&adapter->stats_done);
3359                 break;
3360         case REQUEST_DUMP_SIZE_RSP:
3361                 netdev_dbg(netdev, "Got Request Dump Size Response\n");
3362                 handle_dump_size_rsp(crq, adapter);
3363                 break;
3364         case REQUEST_DUMP_RSP:
3365                 netdev_dbg(netdev, "Got Request Dump Response\n");
3366                 complete(&adapter->fw_done);
3367                 break;
3368         case QUERY_IP_OFFLOAD_RSP:
3369                 netdev_dbg(netdev, "Got Query IP offload Response\n");
3370                 handle_query_ip_offload_rsp(adapter);
3371                 break;
3372         case MULTICAST_CTRL_RSP:
3373                 netdev_dbg(netdev, "Got multicast control Response\n");
3374                 break;
3375         case CONTROL_IP_OFFLOAD_RSP:
3376                 netdev_dbg(netdev, "Got Control IP offload Response\n");
3377                 dma_unmap_single(dev, adapter->ip_offload_ctrl_tok,
3378                                  sizeof(adapter->ip_offload_ctrl),
3379                                  DMA_TO_DEVICE);
3380                 /* We're done with the queries, perform the login */
3381                 send_login(adapter);
3382                 break;
3383         case REQUEST_RAS_COMP_NUM_RSP:
3384                 netdev_dbg(netdev, "Got Request RAS Comp Num Response\n");
3385                 if (crq->request_ras_comp_num_rsp.rc.code == 10) {
3386                         netdev_dbg(netdev, "Request RAS Comp Num not supported\n");
3387                         break;
3388                 }
3389                 adapter->ras_comp_num =
3390                     be32_to_cpu(crq->request_ras_comp_num_rsp.num_components);
3391                 handle_request_ras_comp_num_rsp(crq, adapter);
3392                 break;
3393         case REQUEST_RAS_COMPS_RSP:
3394                 netdev_dbg(netdev, "Got Request RAS Comps Response\n");
3395                 handle_request_ras_comps_rsp(crq, adapter);
3396                 break;
3397         case CONTROL_RAS_RSP:
3398                 netdev_dbg(netdev, "Got Control RAS Response\n");
3399                 handle_control_ras_rsp(crq, adapter);
3400                 break;
3401         case COLLECT_FW_TRACE_RSP:
3402                 netdev_dbg(netdev, "Got Collect firmware trace Response\n");
3403                 complete(&adapter->fw_done);
3404                 break;
3405         default:
3406                 netdev_err(netdev, "Got an invalid cmd type 0x%02x\n",
3407                            gen_crq->cmd);
3408         }
3409 }
3410
3411 static irqreturn_t ibmvnic_interrupt(int irq, void *instance)
3412 {
3413         struct ibmvnic_adapter *adapter = instance;
3414         struct ibmvnic_crq_queue *queue = &adapter->crq;
3415         struct vio_dev *vdev = adapter->vdev;
3416         union ibmvnic_crq *crq;
3417         unsigned long flags;
3418         bool done = false;
3419
3420         spin_lock_irqsave(&queue->lock, flags);
3421         vio_disable_interrupts(vdev);
3422         while (!done) {
3423                 /* Pull all the valid messages off the CRQ */
3424                 while ((crq = ibmvnic_next_crq(adapter)) != NULL) {
3425                         ibmvnic_handle_crq(crq, adapter);
3426                         crq->generic.first = 0;
3427                 }
3428                 vio_enable_interrupts(vdev);
3429                 crq = ibmvnic_next_crq(adapter);
3430                 if (crq) {
3431                         vio_disable_interrupts(vdev);
3432                         ibmvnic_handle_crq(crq, adapter);
3433                         crq->generic.first = 0;
3434                 } else {
3435                         done = true;
3436                 }
3437         }
3438         spin_unlock_irqrestore(&queue->lock, flags);
3439         return IRQ_HANDLED;
3440 }
3441
3442 static int ibmvnic_reenable_crq_queue(struct ibmvnic_adapter *adapter)
3443 {
3444         struct vio_dev *vdev = adapter->vdev;
3445         int rc;
3446
3447         do {
3448                 rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
3449         } while (rc == H_IN_PROGRESS || rc == H_BUSY || H_IS_LONG_BUSY(rc));
3450
3451         if (rc)
3452                 dev_err(&vdev->dev, "Error enabling adapter (rc=%d)\n", rc);
3453
3454         return rc;
3455 }
3456
3457 static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter)
3458 {
3459         struct ibmvnic_crq_queue *crq = &adapter->crq;
3460         struct device *dev = &adapter->vdev->dev;
3461         struct vio_dev *vdev = adapter->vdev;
3462         int rc;
3463
3464         /* Close the CRQ */
3465         do {
3466                 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
3467         } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
3468
3469         /* Clean out the queue */
3470         memset(crq->msgs, 0, PAGE_SIZE);
3471         crq->cur = 0;
3472
3473         /* And re-open it again */
3474         rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
3475                                 crq->msg_token, PAGE_SIZE);
3476
3477         if (rc == H_CLOSED)
3478                 /* Adapter is good, but other end is not ready */
3479                 dev_warn(dev, "Partner adapter not ready\n");
3480         else if (rc != 0)
3481                 dev_warn(dev, "Couldn't register crq (rc=%d)\n", rc);
3482
3483         return rc;
3484 }
3485
3486 static void ibmvnic_release_crq_queue(struct ibmvnic_adapter *adapter)
3487 {
3488         struct ibmvnic_crq_queue *crq = &adapter->crq;
3489         struct vio_dev *vdev = adapter->vdev;
3490         long rc;
3491
3492         netdev_dbg(adapter->netdev, "Releasing CRQ\n");
3493         free_irq(vdev->irq, adapter);
3494         do {
3495                 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
3496         } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
3497
3498         dma_unmap_single(&vdev->dev, crq->msg_token, PAGE_SIZE,
3499                          DMA_BIDIRECTIONAL);
3500         free_page((unsigned long)crq->msgs);
3501 }
3502
3503 static int ibmvnic_init_crq_queue(struct ibmvnic_adapter *adapter)
3504 {
3505         struct ibmvnic_crq_queue *crq = &adapter->crq;
3506         struct device *dev = &adapter->vdev->dev;
3507         struct vio_dev *vdev = adapter->vdev;
3508         int rc, retrc = -ENOMEM;
3509
3510         crq->msgs = (union ibmvnic_crq *)get_zeroed_page(GFP_KERNEL);
3511         /* Should we allocate more than one page? */
3512
3513         if (!crq->msgs)
3514                 return -ENOMEM;
3515
3516         crq->size = PAGE_SIZE / sizeof(*crq->msgs);
3517         crq->msg_token = dma_map_single(dev, crq->msgs, PAGE_SIZE,
3518                                         DMA_BIDIRECTIONAL);
3519         if (dma_mapping_error(dev, crq->msg_token))
3520                 goto map_failed;
3521
3522         rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address,
3523                                 crq->msg_token, PAGE_SIZE);
3524
3525         if (rc == H_RESOURCE)
3526                 /* maybe kexecing and resource is busy. try a reset */
3527                 rc = ibmvnic_reset_crq(adapter);
3528         retrc = rc;
3529
3530         if (rc == H_CLOSED) {
3531                 dev_warn(dev, "Partner adapter not ready\n");
3532         } else if (rc) {
3533                 dev_warn(dev, "Error %d opening adapter\n", rc);
3534                 goto reg_crq_failed;
3535         }
3536
3537         retrc = 0;
3538
3539         netdev_dbg(adapter->netdev, "registering irq 0x%x\n", vdev->irq);
3540         rc = request_irq(vdev->irq, ibmvnic_interrupt, 0, IBMVNIC_NAME,
3541                          adapter);
3542         if (rc) {
3543                 dev_err(dev, "Couldn't register irq 0x%x. rc=%d\n",
3544                         vdev->irq, rc);
3545                 goto req_irq_failed;
3546         }
3547
3548         rc = vio_enable_interrupts(vdev);
3549         if (rc) {
3550                 dev_err(dev, "Error %d enabling interrupts\n", rc);
3551                 goto req_irq_failed;
3552         }
3553
3554         crq->cur = 0;
3555         spin_lock_init(&crq->lock);
3556
3557         return retrc;
3558
3559 req_irq_failed:
3560         do {
3561                 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
3562         } while (rc == H_BUSY || H_IS_LONG_BUSY(rc));
3563 reg_crq_failed:
3564         dma_unmap_single(dev, crq->msg_token, PAGE_SIZE, DMA_BIDIRECTIONAL);
3565 map_failed:
3566         free_page((unsigned long)crq->msgs);
3567         return retrc;
3568 }
3569
3570 /* debugfs for dump */
3571 static int ibmvnic_dump_show(struct seq_file *seq, void *v)
3572 {
3573         struct net_device *netdev = seq->private;
3574         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
3575         struct device *dev = &adapter->vdev->dev;
3576         union ibmvnic_crq crq;
3577
3578         memset(&crq, 0, sizeof(crq));
3579         crq.request_dump_size.first = IBMVNIC_CRQ_CMD;
3580         crq.request_dump_size.cmd = REQUEST_DUMP_SIZE;
3581         ibmvnic_send_crq(adapter, &crq);
3582
3583         init_completion(&adapter->fw_done);
3584         wait_for_completion(&adapter->fw_done);
3585
3586         seq_write(seq, adapter->dump_data, adapter->dump_data_size);
3587
3588         dma_unmap_single(dev, adapter->dump_data_token, adapter->dump_data_size,
3589                          DMA_BIDIRECTIONAL);
3590
3591         kfree(adapter->dump_data);
3592
3593         return 0;
3594 }
3595
3596 static int ibmvnic_dump_open(struct inode *inode, struct file *file)
3597 {
3598         return single_open(file, ibmvnic_dump_show, inode->i_private);
3599 }
3600
3601 static const struct file_operations ibmvnic_dump_ops = {
3602         .owner          = THIS_MODULE,
3603         .open           = ibmvnic_dump_open,
3604         .read           = seq_read,
3605         .llseek         = seq_lseek,
3606         .release        = single_release,
3607 };
3608
3609 static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id)
3610 {
3611         unsigned long timeout = msecs_to_jiffies(30000);
3612         struct ibmvnic_adapter *adapter;
3613         struct net_device *netdev;
3614         unsigned char *mac_addr_p;
3615         struct dentry *ent;
3616         char buf[16]; /* debugfs name buf */
3617         int rc;
3618
3619         dev_dbg(&dev->dev, "entering ibmvnic_probe for UA 0x%x\n",
3620                 dev->unit_address);
3621
3622         mac_addr_p = (unsigned char *)vio_get_attribute(dev,
3623                                                         VETH_MAC_ADDR, NULL);
3624         if (!mac_addr_p) {
3625                 dev_err(&dev->dev,
3626                         "(%s:%3.3d) ERROR: Can't find MAC_ADDR attribute\n",
3627                         __FILE__, __LINE__);
3628                 return 0;
3629         }
3630
3631         netdev = alloc_etherdev_mq(sizeof(struct ibmvnic_adapter),
3632                                    IBMVNIC_MAX_TX_QUEUES);
3633         if (!netdev)
3634                 return -ENOMEM;
3635
3636         adapter = netdev_priv(netdev);
3637         dev_set_drvdata(&dev->dev, netdev);
3638         adapter->vdev = dev;
3639         adapter->netdev = netdev;
3640
3641         ether_addr_copy(adapter->mac_addr, mac_addr_p);
3642         ether_addr_copy(netdev->dev_addr, adapter->mac_addr);
3643         netdev->irq = dev->irq;
3644         netdev->netdev_ops = &ibmvnic_netdev_ops;
3645         netdev->ethtool_ops = &ibmvnic_ethtool_ops;
3646         SET_NETDEV_DEV(netdev, &dev->dev);
3647
3648         spin_lock_init(&adapter->stats_lock);
3649
3650         rc = ibmvnic_init_crq_queue(adapter);
3651         if (rc) {
3652                 dev_err(&dev->dev, "Couldn't initialize crq. rc=%d\n", rc);
3653                 goto free_netdev;
3654         }
3655
3656         INIT_LIST_HEAD(&adapter->errors);
3657         INIT_LIST_HEAD(&adapter->inflight);
3658         spin_lock_init(&adapter->error_list_lock);
3659         spin_lock_init(&adapter->inflight_lock);
3660
3661         adapter->stats_token = dma_map_single(&dev->dev, &adapter->stats,
3662                                               sizeof(struct ibmvnic_statistics),
3663                                               DMA_FROM_DEVICE);
3664         if (dma_mapping_error(&dev->dev, adapter->stats_token)) {
3665                 if (!firmware_has_feature(FW_FEATURE_CMO))
3666                         dev_err(&dev->dev, "Couldn't map stats buffer\n");
3667                 goto free_crq;
3668         }
3669
3670         snprintf(buf, sizeof(buf), "ibmvnic_%x", dev->unit_address);
3671         ent = debugfs_create_dir(buf, NULL);
3672         if (!ent || IS_ERR(ent)) {
3673                 dev_info(&dev->dev, "debugfs create directory failed\n");
3674                 adapter->debugfs_dir = NULL;
3675         } else {
3676                 adapter->debugfs_dir = ent;
3677                 ent = debugfs_create_file("dump", S_IRUGO, adapter->debugfs_dir,
3678                                           netdev, &ibmvnic_dump_ops);
3679                 if (!ent || IS_ERR(ent)) {
3680                         dev_info(&dev->dev,
3681                                  "debugfs create dump file failed\n");
3682                         adapter->debugfs_dump = NULL;
3683                 } else {
3684                         adapter->debugfs_dump = ent;
3685                 }
3686         }
3687         ibmvnic_send_crq_init(adapter);
3688
3689         init_completion(&adapter->init_done);
3690         if (!wait_for_completion_timeout(&adapter->init_done, timeout))
3691                 return 0;
3692
3693         do {
3694                 if (adapter->renegotiate) {
3695                         adapter->renegotiate = false;
3696                         release_sub_crqs_no_irqs(adapter);
3697                         send_cap_queries(adapter);
3698
3699                         reinit_completion(&adapter->init_done);
3700                         if (!wait_for_completion_timeout(&adapter->init_done,
3701                                                          timeout))
3702                                 return 0;
3703                 }
3704         } while (adapter->renegotiate);
3705
3706         rc = init_sub_crq_irqs(adapter);
3707         if (rc) {
3708                 dev_err(&dev->dev, "failed to initialize sub crq irqs\n");
3709                 goto free_debugfs;
3710         }
3711
3712         netdev->real_num_tx_queues = adapter->req_tx_queues;
3713
3714         rc = register_netdev(netdev);
3715         if (rc) {
3716                 dev_err(&dev->dev, "failed to register netdev rc=%d\n", rc);
3717                 goto free_sub_crqs;
3718         }
3719         dev_info(&dev->dev, "ibmvnic registered\n");
3720
3721         return 0;
3722
3723 free_sub_crqs:
3724         release_sub_crqs(adapter);
3725 free_debugfs:
3726         if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir))
3727                 debugfs_remove_recursive(adapter->debugfs_dir);
3728 free_crq:
3729         ibmvnic_release_crq_queue(adapter);
3730 free_netdev:
3731         free_netdev(netdev);
3732         return rc;
3733 }
3734
3735 static int ibmvnic_remove(struct vio_dev *dev)
3736 {
3737         struct net_device *netdev = dev_get_drvdata(&dev->dev);
3738         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
3739
3740         unregister_netdev(netdev);
3741
3742         release_sub_crqs(adapter);
3743
3744         ibmvnic_release_crq_queue(adapter);
3745
3746         if (adapter->debugfs_dir && !IS_ERR(adapter->debugfs_dir))
3747                 debugfs_remove_recursive(adapter->debugfs_dir);
3748
3749         if (adapter->ras_comps)
3750                 dma_free_coherent(&dev->dev,
3751                                   adapter->ras_comp_num *
3752                                   sizeof(struct ibmvnic_fw_component),
3753                                   adapter->ras_comps, adapter->ras_comps_tok);
3754
3755         kfree(adapter->ras_comp_int);
3756
3757         free_netdev(netdev);
3758         dev_set_drvdata(&dev->dev, NULL);
3759
3760         return 0;
3761 }
3762
3763 static unsigned long ibmvnic_get_desired_dma(struct vio_dev *vdev)
3764 {
3765         struct net_device *netdev = dev_get_drvdata(&vdev->dev);
3766         struct ibmvnic_adapter *adapter;
3767         struct iommu_table *tbl;
3768         unsigned long ret = 0;
3769         int i;
3770
3771         tbl = get_iommu_table_base(&vdev->dev);
3772
3773         /* netdev inits at probe time along with the structures we need below*/
3774         if (!netdev)
3775                 return IOMMU_PAGE_ALIGN(IBMVNIC_IO_ENTITLEMENT_DEFAULT, tbl);
3776
3777         adapter = netdev_priv(netdev);
3778
3779         ret += PAGE_SIZE; /* the crq message queue */
3780         ret += adapter->bounce_buffer_size;
3781         ret += IOMMU_PAGE_ALIGN(sizeof(struct ibmvnic_statistics), tbl);
3782
3783         for (i = 0; i < adapter->req_tx_queues + adapter->req_rx_queues; i++)
3784                 ret += 4 * PAGE_SIZE; /* the scrq message queue */
3785
3786         for (i = 0; i < be32_to_cpu(adapter->login_rsp_buf->num_rxadd_subcrqs);
3787              i++)
3788                 ret += adapter->rx_pool[i].size *
3789                     IOMMU_PAGE_ALIGN(adapter->rx_pool[i].buff_size, tbl);
3790
3791         return ret;
3792 }
3793
3794 static int ibmvnic_resume(struct device *dev)
3795 {
3796         struct net_device *netdev = dev_get_drvdata(dev);
3797         struct ibmvnic_adapter *adapter = netdev_priv(netdev);
3798         int i;
3799
3800         /* kick the interrupt handlers just in case we lost an interrupt */
3801         for (i = 0; i < adapter->req_rx_queues; i++)
3802                 ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq,
3803                                      adapter->rx_scrq[i]);
3804
3805         return 0;
3806 }
3807
3808 static struct vio_device_id ibmvnic_device_table[] = {
3809         {"network", "IBM,vnic"},
3810         {"", "" }
3811 };
3812 MODULE_DEVICE_TABLE(vio, ibmvnic_device_table);
3813
3814 static const struct dev_pm_ops ibmvnic_pm_ops = {
3815         .resume = ibmvnic_resume
3816 };
3817
3818 static struct vio_driver ibmvnic_driver = {
3819         .id_table       = ibmvnic_device_table,
3820         .probe          = ibmvnic_probe,
3821         .remove         = ibmvnic_remove,
3822         .get_desired_dma = ibmvnic_get_desired_dma,
3823         .name           = ibmvnic_driver_name,
3824         .pm             = &ibmvnic_pm_ops,
3825 };
3826
3827 /* module functions */
3828 static int __init ibmvnic_module_init(void)
3829 {
3830         pr_info("%s: %s %s\n", ibmvnic_driver_name, ibmvnic_driver_string,
3831                 IBMVNIC_DRIVER_VERSION);
3832
3833         return vio_register_driver(&ibmvnic_driver);
3834 }
3835
3836 static void __exit ibmvnic_module_exit(void)
3837 {
3838         vio_unregister_driver(&ibmvnic_driver);
3839 }
3840
3841 module_init(ibmvnic_module_init);
3842 module_exit(ibmvnic_module_exit);